CN100427829C - Method for controlling heat-supply boiler using flow sensor - Google Patents
Method for controlling heat-supply boiler using flow sensor Download PDFInfo
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- CN100427829C CN100427829C CNB031101283A CN03110128A CN100427829C CN 100427829 C CN100427829 C CN 100427829C CN B031101283 A CNB031101283 A CN B031101283A CN 03110128 A CN03110128 A CN 03110128A CN 100427829 C CN100427829 C CN 100427829C
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Abstract
The present invention provides a method for controlling a heating boiler by a flow sensor. The method for controlling a heating boiler comprises that before a circulating water pump is operated, a flow sensor installed in an outlet of an internal circulating water supply pipe of the boiler is used for detecting the circulating water flow in a heat supply pipe and controlling a heat supply area in advance, the heat supply area is regulated to the maximal heating capacity of the boiler by a controller, and thus, the proportional operation is carried out according to the maximal heating capacity after the regulation. Therefore, the method for controlling a heating boiler can stably and exactly control the heat supply temperature and can save the cost of fuels.
Description
Technical field
The present invention relates to a kind of method of utilizing flow sensor control heating boiler, more particularly, relate to a kind of method of controlling heating boiler as follows: before the water circulating pump operation, utilize to utilize the flow sensor in the exit that is installed in the interior periodical feeding pipe in the boiler to detect the flow of the recirculated water that in heating tube, circulates, and control the heat supply district in advance, controller is adjusted to maximum with boiler to the heat capacity in heat supply district then, thereby carries out the ratio operation according to the maximum heat capacity after regulating.
Background technology
Conventional condensation gas boiler will be described down.In the condensation gas boiler of routine, burner is installed in the top of boiler, so just can light the combustion gas that mixes with air, and burning downwards.Be installed in the heat exchanger that is used for heating of boiler bottom, utilizing high-temperature fuel gas to add hot fluid or recirculated water.Fluid after the heating or water circulation flow in bedroom, parlor or the bathroom, to carry out heat supply running.
In addition, when hot water moved, the operation triple valve interrupting providing hot water to bedroom, parlor or bathroom, and was transformed into the hot water heat exchanger of installation parallel with one another with valve, with used as thermal source.When recirculated water is admitted to heat exchanger and reassemble in heat exchanger, the recirculated water that is used for bathing is heated.
According to control method or sealing state, the gas fired-boiler that constitutes in a manner described can be divided into different types.Particularly, AIR Proportional formula boiler is measured the pressure from outside inhaled air, will offer burner with the proportional fuel of the air pressure of measuring then.Therefore, provide accurate fuel quantity, so just improved efficiency of combustion, and reduced pernicious gas to greatest extent, thereby prevent from air is polluted in ratio with air pressure.
That is to say, because the gas supply amount of regulating only changes with air pressure, therefore under the situation of the proportion control part of not controlling gas trap individually, certain relatively air pressure provides a certain amount of combustion gas, thereby can keep constant air-fuel ratio all the time.Therefore, accurate proportion control operation is different from ON/OFF control type or the operation of flow proportional formula.
Exercise question was the Korean Patent Publication No. 10-2000-26741 of " AIR Proportional formula condensing boiler ", and the applying date is the korean patent application on May 15th, 2000, licensed to the application's applicant on August 8th, 2000.
Fig. 1 is the structural representation of the conventional AIR Proportional formula condensing boiler of expression; Fig. 2 is the block diagram of the conventional AIR Proportional formula condensing boiler of expression.
At first, condensation gas boiler as shown in Figure 1 utilizes the AIR Proportional formula method operation according to atmosphere outside temperature conditioned air pressure, thereby constant air capacity can be provided all the time.Condensation gas boiler comprises: a seal 2, and it has the air intake pipe 3 and the exhaust emission tube 20 that is used for to the outside drain burnt gas that are used for sucking according to the operation of direct current (DC) air blast 10 extraneous air; A combustion chamber 4, it has a burner 12, and this burner is used to burn through first and second motor-driven valves 46 and 46 ' and combustion gas of providing of AIR Proportional valve 47 and mixture by DC blower 10 inhaled airs; Sensible heat exchanger 14 that is used for heat cycles water and one is all-in-one-piece latent heat exchanger 16 with it; A hot water heat exchanger 34, it is used to utilize the heat recirculated water heating by sensible heat exchanger 14 to supply water; A water circulating pump 22, the recirculated water that it is used for flowing through circulating water strainer 24 and air/water separator 26 offers latent heat exchanger 16; And an expansion tank 48, it is used to store the part recirculated water of importing according to the operation of triple valve 28 and anti-excess pressure valve 32.
In addition, air pressure sensor 53 is installed for air-ratio, and it is installed in the suction muffler 6, is used to detect the air pressure by DC blower 10 inhaled airs.If the pressure identifier 51 in air-proportioning valve 47 identifies air pressure, then controller 40 bases are by the combustion chamber 4 in the pneumatics identifier 51 detected air-pressure controlling boilers, to spray the combustion mode of combustion gas.In addition, controller 40 receives the signal of temperature sensors, and according to the signal of temperature sensor, the data of utilizing the current temperature of expression whether to reach design temperature are calculated thermal capacity.Controller 40 also carries out power-control to the revolution of DC blower 10, and changes air pressure according to its required revolution, regulating the combustion gas discharge rate of air-proportioning valve 47, thereby and regulates the gas supply amount that offers burner 12.
In more detail, burner 12 is installed in the top of combustion chamber 4, and it is according to the operation combustion gas of DC blower 10 and mixture through suction muffler 6 inhaled airs.Sensible heat exchanger 14 and latent heat exchanger 16 are successively set on the below of burner 12.In running, sensible heat exchanger 14 heat cycles water, wherein the sensible heat of burner generation directly contacts with recirculated water.Latent heat exchanger 16 is utilized the latent heat heat cycles water that produces when contacting with waste gas heat.
Waste gas by latent heat exchanger 16 is discharged into the outside by flue gas leading 20, and the condensed water that produces when heat exchange is collected in the exhaust hood 18, and then is discharged into the outside.According to the operation of water circulating pump 22, recirculated water is heated successively by latent heat exchanger 16 and sensible heat exchanger 14 time.The temperature of utilizing thermistor 52 to detect the recirculated water after heating sends detected temperature to controller 40 then.
Be used to make the water circulating pump 22 of recirculated water circular flow to be arranged on the lower left quarter of boiler.When water circulating pump 22 operation, finished to the recirculated water of indoor heating by the road L1 be sent to circulating water strainer 24.Circulating water strainer 24 is removed contained impurity in the recirculated water.Recirculated water is transported to the air/water separator 26 that is positioned at the circulating water strainer top.Air/water separator 26 emits the air in the recirculated water through last air scoop.
Be used to prevent that the anti-excess pressure valve 32 that circulating water pressure rises so high is installed between circulating water strainer 24 and the air/water separator 26, this valve is transported to expansion tank 48 with part recirculated water, thereby has regulated pressure.By the operation of water circulating pump 22, recirculated water that will be by air/water separator 24 L2 by the road is transported to latent heat exchanger 16, by sensible heat exchanger 14 time it is heated then, and L3 discharges it by the road again.According to the operation of triple valve 28, the recirculated water by pipeline L3 is transported to indoor.
The heat exchanger that utilizes the heat of recirculated water to produce hot water is arranged on the middle and lower part of boiler.According to the operation of hot water flow switch 36, the cold water of importing by pipeline L6 is heated in the process by hot water heat exchanger 34, then by pipeline L7 discharging.Hot water heat exchanger 34 of the present invention has parallel type structure, and sets less deviation range, therefore compared with prior art can control to very little zone.So just enlarge the workspace of boiler, thereby reduced harmful exhaust to greatest extent.
The burning feedway is installed in the right lower quadrant of boiler.According to first and second motor-driven valves 46 and 46 ' and the output signal of the DC blower 10 that transmits of slave controller 40 revolution of DC blower 10 is carried out power control.Simultaneously, according to the operation of the air-proportioning valve 47 that can change the gas emission amount, combustion gas that will be by pipeline L8 input L9 by the road offers the nozzle 8 that is positioned at 4 tops, combustion chamber.Here, the gas supply amount changes according to the operation of air-proportioning valve 47.Therefore, the additional variation that will depend on extraneous air of gas supply amount.Utilization is lighted the combustion gas that provides by this method by the spark of ignition transformer 42 and spark lever transmission and is burnt.Above-mentioned combustion process is by controller 40 controls, and this controller 40 is controlled by the input signal that receives the indoor temperature adjuster of being handled by the user 38.
The running of air-proportion expression condensing boiler is described with reference to Fig. 2 below.
As mentioned above, utilize the air-proportion expression boiler of air pressure to calculate heat, the revolution to air blast 10 carries out power control then, thereby changes air pressure according to required revolution.Therefore, regulate the gas emission amount of air-proportioning valve 47 according to the change of air pressure, thereby can regulate the gas supply amount that will offer burner 12.
In other words, in the prior art, the boiler of big thermal capacity has been installed extensively in the heat supply district, so that the control heat supply running adapts this operation and this heat supply district.Because user's hobby and current season, they can not open all boiler heat supplying pipeline valves, so the heat capacity of the boiler heat capacity more required than actual heat supply district is big.Therefore, because excessive heat capacity, boiler is not a proportion control, so just causes the waste of fuel.
In addition, under the situation that boiler does not move, when because the water circulating pump job failure, recirculated water is in not recurrent state, and at this moment boiler easily is in superheat state.In addition, because recirculated water does not circulate and the continuous opening and closing of boiler, so cause the waste of fuel.
Summary of the invention
In order to address the above problem, the purpose of this invention is to provide a kind of method of utilizing flow sensor control heating boiler, this method is before the water circulating pump operation, the flow sensor that utilization is installed in the exit of the interior periodical feeding pipe in the boiler detects the flow of the recirculated water that circulates in heating tube, and control the heat supply district in advance, controller is adjusted to maximum with boiler to the heat capacity in heat supply district then, thereby carries out the ratio operation according to the maximum heat capacity after regulating.
In order to realize above-mentioned purpose of the present invention, a kind of method of utilizing flow sensor control heating boiler is provided, with heat with respect to each room of Flow-rate adjustment of recirculated water, the control method of this heating boiler comprises the steps: to utilize the flow sensor that is installed in the interior periodical feeding pipe outlet in the boiler to detect the circulating water flow that circulates in heating tube, thus control heat supply district; To compare by the boiler heat supplying ability of setting in the heat supply district of circulating water flow control and the controller, and judge whether the former equals the latter; According to the heat capacity of boiler, convert circulating water flow to maximum/minimum thermal capability value; Utilize the maximum/minimum thermal capability value after changing that boiler is carried out proportion control.
Various details is utilized the effect of the heating boiler control method of flow sensor.
Make the water circulating pump operation in the boiler.Then, flow sensor detects the flow of recirculated water, thereby detects the heat supply district in advance.Controller converts detected circulating water flow to needed thermal capacity within it, and according to the proportion control temperature of ratio formula computation cycles water based on the thermal capacity value after the conversion, to reach the boiler that control is used for the heat supply purpose.
Description of drawings
After the reference accompanying drawing has described the preferred embodiments of the present invention in detail, above-mentioned purpose of the present invention and other advantage will become more obvious.Wherein:
Fig. 1 is the structural representation of the AIR Proportional formula condensing boiler of routine;
Fig. 2 is the block diagram of the AIR Proportional formula condensing boiler of routine;
Fig. 3 is used to explain the block diagram that utilizes the heating boiler control method of flow sensor of the present invention;
Fig. 4 and Fig. 5 are used to explain the flow chart that utilizes the heating boiler control method of flow sensor of the present invention.
The specific embodiment
A preferred embodiment of the present invention is described below with reference to accompanying drawings.In addition, this embodiment is not the restriction to technical scope of the present invention, and just illustrates.Adopt identical Reference numeral with parts identical in the prior art.
Fig. 3 is used to explain the block diagram that utilizes the heating boiler control method of flow sensor of the present invention.
As shown in Figure 3, heating boiler of the present invention comprises: an air blast 1 that is used for sucking by aspirating air pipe 3 air; An indoor temperature adjuster 38, it handles a series of combustion processes by the user; An ignition transformer 42, the spark that it is used to produce. supplied fuel to light; A water circulating pump 22, it is used to make the recirculated water circular flow; Flow sensor 50, it is installed in the recirculated water supply pipe, is used to measure the flow of recirculated water; And controller 40, the circulating water flow that it will be detected by flow sensor 50 and the heat capacity of boiler relatively and judge whether the former equals the latter, thus to boiler carry out with the heat capacity of boiler mutually proper proportion control.
Therefore, work as boiler startup, controller 40 utilizes the flow sensor 50 that is installed in the recirculated water supply pipe to detect the circulating water flow that circulates in boiler, then the flow of recirculated water is compared with the heat capacity of boiler, whether equals the latter to judge the former.
The flow of the recirculated water that circulates in boiler here, is detected by flow sensor 50.So just can control the zone that the user need carry out heat supply.Therefore, during boiler operatiopn, adapt to the in fact heat supply zone of user's heating in order to make boiler, controller is automatically controlled the heat capacity of boiler.
In addition, controller 40 converts the circulating water flow that flow sensor 50 detects to adapt to the boiler heat supplying ability maximum/minimum thermal capacity, then in order to make boiler adapt to the heat supply zone, the heat capacity of boiler is adjusted to the maximum heat capacity, under proportion control, moves the boiler that is used for the heat supply purpose then.Then, controller 40 start cycles water pumps 22 and air blast 1 are so that provide igniting necessary air quantity.Connect ignition transformer 42 then, and keep the necessary air quantity of igniting within a certain period of time.Like this, first and second motor-driven valves 46 and 46 ' unlatching are to provide the fuel that adapts with current wind supply quantity.If fuel is lighted, then under the state that ignition transformer 42 disconnects, move the boiler that is used for the heat supply purpose.Therefore, because the operation of boiler only provides the thermal capacity that is complementary with actual heat supply zone, so can prevent to waste fuel owing to thermal capacity is excessive.In addition, can prevent boiler than necessary more frequent starting and shutdown and overheated, thereby can stably move.
Fig. 4 is used to explain the flow chart that utilizes the heating boiler control method of flow sensor of the present invention.
As shown in Figure 4, after the boiler starting, utilize flow sensor in the outlet of the interior periodical feeding pipe that is installed in boiler to detect the flow (S10) of the recirculated water that in the recirculated water supply pipe, circulates.Therefore, the flow that utilizes flow sensor to detect recirculated water can be controlled in advance and be heated the zone.
Then, controller is compared detected circulating water flow with the boiler heat supplying ability of setting in controller, and judges whether the former equals the latter.Controller converts circulating water flow to maximum/minimum thermal capability value (S30) according to the thermal capacity of boiler again.Then, controller holds ability with the maximum heat supply that the heat supply zone is adjusted to boiler, thereby carries out heat supply running (S40) according to the ratio formula by the maximum after regulating/minimum thermal capacity decision.
As shown in Figure 5, during heat supply running operation cycle water pump in utilizing controller, break down, then utilize flow sensor to detect the flow (S50) of recirculated water as the water circulating pump in the boiler.Therefore, controller can identify the fault (S60) of water circulating pump very soon, and therefore interrupts fuel to the supply of boiler, thereby make heat supply running stable, and on the indoor temperature adjuster, indicate the malfunction (S70) that sends.
If adopt the aforesaid heating boiler control method of utilizing flow sensor, then when breaking down, water circulating pump do not utilize flow sensor to detect the flow of recirculated water.Therefore, the fault that controller can very fast identification water circulating pump, and interrupt providing fuel to boiler, thereby make heat supply running stable. at once
As mentioned above, heating boiler control method of the present invention is before the water circulating pump operation, utilization is installed in the flow that flow sensor in the outlet of interior circulation-supplied pipe of boiler detects recirculated water, and control in advance is for holding the zone, controller is adjusted to maximum heat capacity with the heat supply zone then, thereby carries out the ratio operation according to the maximum heat capacity after regulating.Therefore, the control method of this heating boiler can prevent because cause overheated of superheated and the waste of fuel that causes owing to excessive thermal capacity.
In addition, when the water circulating pump in boiler broke down, flow sensor can not detect flow.Therefore, thus controller can judge the fault of water circulating pump and can interrupt boiler operatiopn safely, to prevent boiler overheating.
The invention is not restricted to the foregoing description, obviously, those skilled in the art can carry out many improvement and conversion under the situation that does not break away from spirit of the present invention and claim restricted portion.
Claims (2)
1. a method of utilizing flow sensor control heating boiler is used for the heat with respect to each room of Flow-rate adjustment of recirculated water, and this heating boiler control method comprises the steps:
The flow sensor that utilization is installed in the interior periodical feeding pipe outlet in the boiler detects the circulating water flow that circulates in heating tube, thus control heat supply district;
Compare by the boiler heat supplying ability of setting in the heat supply district of circulating water flow control and the controller, and judge whether the former equals the latter;
Heat capacity according to the flow judgement boiler that utilizes recirculated water in controller converts circulating water flow to maximum/minimum thermal capability value;
In controller, regulate the maximum/minimum thermal capability value that is used for the boiler hot capacity adaptably, and utilize by the ratio formula that maximum/the minimum thermal capability value is determined after regulating boiler is carried out proportion control with the heat supply district.
2. the method for control heating boiler as claimed in claim 1 also comprises the steps:
The flow sensor that is installed in the interior periodical feeding pipe outlet in the boiler in utilization detects in the step of circulating water flow that circulates in heating tube and the heat supply district that controls the actual heating of user, when flow sensor can not detect flow, judge in controller whether water circulating pump breaks down; And
When water circulating pump breaks down, in controller, indicate this water circulating pump to break down and the signal of operation irregularity is sent to the indoor temperature adjuster by interrupting boiler operatiopn safely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031101283A CN100427829C (en) | 2003-04-11 | 2003-04-11 | Method for controlling heat-supply boiler using flow sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031101283A CN100427829C (en) | 2003-04-11 | 2003-04-11 | Method for controlling heat-supply boiler using flow sensor |
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| Publication Number | Publication Date |
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| CN1536273A CN1536273A (en) | 2004-10-13 |
| CN100427829C true CN100427829C (en) | 2008-10-22 |
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| CNB031101283A Expired - Fee Related CN100427829C (en) | 2003-04-11 | 2003-04-11 | Method for controlling heat-supply boiler using flow sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954461A (en) * | 2012-11-15 | 2013-03-06 | 中国船舶重工集团公司第七一九研究所 | Self-adaptive marine direct current boiler pressure control system and realization method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219870B (en) * | 2018-11-23 | 2023-07-25 | 宁波方太厨具有限公司 | Gas water heater and combustion control method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2043305A (en) * | 1979-02-07 | 1980-10-01 | Salamander Electronics Ltd | Control arrangement in a circulating fluid heating system |
| DE4429224A1 (en) * | 1994-08-18 | 1996-02-22 | Stiebel Eltron Gmbh & Co Kg | Gas-fired heating appliance |
-
2003
- 2003-04-11 CN CNB031101283A patent/CN100427829C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2043305A (en) * | 1979-02-07 | 1980-10-01 | Salamander Electronics Ltd | Control arrangement in a circulating fluid heating system |
| DE4429224A1 (en) * | 1994-08-18 | 1996-02-22 | Stiebel Eltron Gmbh & Co Kg | Gas-fired heating appliance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954461A (en) * | 2012-11-15 | 2013-03-06 | 中国船舶重工集团公司第七一九研究所 | Self-adaptive marine direct current boiler pressure control system and realization method thereof |
| CN102954461B (en) * | 2012-11-15 | 2014-07-16 | 中国船舶重工集团公司第七一九研究所 | Self-adaptive marine direct current boiler pressure control system and realization method thereof |
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| CN1536273A (en) | 2004-10-13 |
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Granted publication date: 20081022 Termination date: 20120411 |