CN1296157A - Combustion device - Google Patents

Combustion device Download PDF

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Publication number
CN1296157A
CN1296157A CN00128305A CN00128305A CN1296157A CN 1296157 A CN1296157 A CN 1296157A CN 00128305 A CN00128305 A CN 00128305A CN 00128305 A CN00128305 A CN 00128305A CN 1296157 A CN1296157 A CN 1296157A
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China
Prior art keywords
open
burner
draining
generating capacity
water
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Granted
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CN00128305A
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Chinese (zh)
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CN1159554C (en
Inventor
竹内誉树
森锦司
安藤正和
高木秀彦
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Rinnai Corp
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Rinnai Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • F24H8/003—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation having means for moistening the combustion air with condensate from the combustion gases
    • 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
    • F24H9/0005—Details for water heaters
    • F24H9/0036—Dispositions against condensation of combustion products
    • 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
    • F24H9/16—Arrangements for water drainage 

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Details Of Fluid Heaters (AREA)

Abstract

The present invention provided a combustion device. The combustion device may switch a on-off valve in a appropriate period based on the view point of controlling the switching frequency of the on-off valve and saving the neutralizing water for draining. The combustion device comprises a branch passage 8 branching from the water passage 1 and interflowing in the drain passage 5, an on-off valve 8a for selectively opening and closing a branch passage 8, and an on-off valve control device 13 for controlling the on-off valve 8a, controller of the opening valve time 16 for confirming the on-off valve 8a is at the opening valve time alpha T (0<alpha<1) during the on-off period T. An on-off valve control device 13 switches the on-off valve 8a during the first period which is before the burner 2 burning until the determined time according to the opening valve time determined by the controller of the opening valve time 16. After the determined time, switching the on-off valve during the second period longer than the first period.

Description

Burner
The present invention relates to a kind of burner as water heater etc., particularly, the present invention relates to a kind of burner, described burner comprises: pulverizing jet, water pipe, nationality by and the burning and gas-exhausting of described pulverizing jet between the heat exchange carried out and heat exchanger that the water in the described water pipe is heated up, the water of dewfall on this heat exchanger is collected the drainpipe of discharging as draining, be positioned at this heat exchanger upstream end, from described water pipe branch and collaborate shunt pipe in described drainpipe, open and close the open and close valve of described shunt pipe and make described open and close valve make the open and close valve control device that periodically opens and closes, measure the draining generating capacity determinator of draining generating capacity, generating capacity according to described draining, determine that the water consumption of the described draining of neutralization institute palpus water consumption determines device, and, determine that the duration of valve opening that the open and close valve time of opening accounts for the whole switching cycle ratio of described open and close valve determines device according to described water consumption.
In the past, as described burner, the application's applicant was willing to disclose a kind of water heater on the flat 11-175223 communique the spy of Japanese Patent Application.In this water heater, the steam that is contained in the burning and gas-exhausting of pulverizing jet is captured latent heat by heat exchanger, generates draining after the dewfall.Described draining has been because of having absorbed nitrogen oxide in the burning and gas-exhausting (NOx) and oxysulfide (SOx), and contains nitric acid (HNO 3) and sulfuric acid (H 2SO 4), so, have pH and be about 4 acidity.Therefore,,, water in the water pipe can be sneaked in the draining, make the pH of described draining be neutralized to the scope of the 5-9 that can reach standard of drainage via shunt pipe by opening and closing open and close valve.Thus, can prevent the corrosion of the metallic article that uses in the following aquaporin that draining flows through and the damage of concrete structure, also can suppress because of the caused environmental disruption of water pollution.Again, herein, " neutralization " speech not only refers to by alkaline solution is mixed, and makes the pH of draining arrive the pH scope of standard of drainage, and also means by the water mixed diluting, makes the pH scope of the pH arrival standard of drainage of draining.
Yet said method is to open and close open and close valve with certain cycle, makes current through shunt pipe, perhaps, the current in the shunt pipe is interrupted, and regulates the water yield that is used for draining by this, therefore, problem as described below can take place:
That is, when the service time of water heater was long than the switching cycle of open and close valve, the on-off action increased frequency of open and close valve caused shorten the service life of open and close valve; Again, the switching sound of open and close valve frequently takes place, and brings bad odour to the user.
On the other hand, when service time of water heater than switching cycle of open and close valve in short-term, then be in all the time once can not closing state for the open and close valve that promptly has been in open mode in taking fire at pulverizing jet, until the pulverizing jet all burnt.At this moment, between the operating period of water heater, the water in the shunt pipe runs off arbitrarily, thereby, cause the water consumption that makes exceed in and draining institute must cause waste more than the water consumption.
In view of above-mentioned background, solution problem of the present invention is: a kind of burner is provided, and described burner is from suppressing the switching number of times of open and close valve, and in saving and the viewpoint of draining institute palpus water consumption, can the suitable cycle open and close valve be opened and closed.
For solving above-mentioned problem, burner of the present invention is characterised in that:
Described open and close valve control device is according to determining the determined duration of valve opening of device by described duration of valve opening, and taking fire from pulverizing jet reaches institute and be its 1st cycle before fixing time, and opens and closes described open and close valve in the 1st cycle; Be 2nd cycle long in cycle after process is fixed time, in the 2nd cycle, open and close described open and close valve than the 1st cycle.
According to said structure, to reach institute be the 1st cycle before fixing time taking fire from pulverizing jet, and open and close described open and close valve in this cycle.Thereby when burner continued use in whole institute fixes time, open and close valve had at least and once is in closed condition, did not have water in the shunt pipe to let drift, but can carry out to using water wisely the neutralization of draining.
Again, be 2nd cycle long in cycle after process is fixed time,, carry out the control of open and close valve in this cycle than the 1st cycle.Thereby, fix time when continuing to use when burner surpasses institute, with the above-mentioned occasion that opens and closes open and close valve in the 1st cycle all the time by comparison, can suppress the switching number of times of open and close valve.Thus, can prolong the service life of open and close valve, and, can suppress to take place the number of times of the switching sound of open and close valve.
The present inventor learns from experience: the frequency that burner was used in the short time about 1 minute is higher.Therefore, above-mentioned fix time is advisable to be set in 1 minute.According to the invention described above, when the use of burner surpasses 1 minute, after taking fire through 1 minute, described pulverizing jet, carries out the switching of open and close valve for the 2nd cycle long in cycle than the 1st cycle.Thereby, fix time when continuing to use when burner surpasses institute, with the occasion that in above-mentioned the 1st cycle, opens and closes open and close valve all the time by comparison, can suppress the switching number of times of open and close valve.
Be preferably, above-mentioned institute fix time be set at described the 1st cycle roughly the same.According to the invention described above, when burner only used institute to fix time burning, the switching number of times of its open and close valve can be suppressed at 1 time.
Be preferably, above-mentioned duration of valve opening determines that device determines that the duration of valve opening of described open and close valve accounts for the early stage in described the 1st cycle.Again, be more preferably, above-mentioned duration of valve opening determines that device determines that the duration of valve opening of described open and close valve accounts for the early stage in described the 2nd cycle.
According to the invention described above, when reaching in earlier stage when the early stage in the 2nd cycle, burner quit work, can avoid owing to open and close valve is closed the streamflow deficiency that makes in the shunt pipe in the 1st cycle, cause can't be fully in and the state of affairs of draining take place.
The application's inventor finds: when described water pipe water consumption with respect to the mixed proportion of described draining generating capacity less than 2.0 the time, then pH can't be about the pH5 in (pH5-9) scope that 4 acid effluent is neutralized to standard of drainage.Conversely speaking, when described water pipe water consumption with respect to the mixed proportion of described draining generating capacity greater than 2.0 the time, then pH can be about the pH5 in (pH5-9) scope that 4 acid effluent is neutralized to standard of drainage.Have, as increase above-mentioned mixing ratio to 6.0, then pH reaches about 6, can neutralize fully to draining.On the other hand, increase above-mentioned mixing ratio again, then the use amount of water also increases simultaneously in the water pipe, increases above-mentioned mixing ratio once again like unnecessary.
Therefore, be preferably, determine that by described water consumption determined, described water consumption of device and ratio by the measured draining generating capacity of described draining generating capacity determinator are 2.0-6.0.
Suitably be controlled at the amount that is used for draining and institute's palpus for need being mixed in the water yield in the draining, be necessary correctly to measure the draining generating capacity.Generate, be contained in the burning of following pulverizing jet in the steam in the exhaust (with the heat exchange burning and gas-exhausting before of heat exchanger), its a part of dewfall becomes draining on heat exchanger.Remainingly then discharge from burner with the form that is contained in the secondary exhaust (with the burning and gas-exhausting after the heat exchange of heat exchanger) again.Therefore,, can correctly record the dewfall water yield on the heat exchanger by the described steam discharge rate of deduction from described steam generating capacity, that is, and the draining generating capacity.Again, because how much the steam generating capacity is to decide according to the size of pulverizing jet quantity combusted, so, can record the generating capacity of steam according to quantity combusted.Have again, because how much the steam discharge rate is to decide according to the height of secondary delivery temperature, so, can record the steam generating capacity according to the secondary delivery temperature.In addition, because the height of secondary delivery temperature is decided by the size of the rate of heat exchange of the height of a delivery temperature and heat exchanger, therefore, can record delivery temperature according to the size of the rate of heat exchange of the height of a delivery temperature and heat exchanger.Have, the height of a delivery temperature depends on the size of the quantity combusted of pulverizing jet again, therefore, can determine delivery temperature one time according to described quantity combusted.Have again, consistent for making the hot-water supply temperature when the calory burning of pulverizing jet is controlled by reaction type with the target hot water temperature, can record the draining generating capacity according to quantity combusted.
So, be preferably, described draining generating capacity determinator comprises the steam generating capacity determinator of the steam generating capacity that is used for recording an exhaust that is contained in above-mentioned pulverizing jet, and be used for recording the steam discharge rate determinator of the steam discharge rate that is contained in the exhaust of above-mentioned pulverizing jet secondary, by the described steam discharge rate of deduction from described steam generating capacity, can measure the generating capacity of draining.
Again, be preferably, described device has the combustion control device that can be used for controlling above-mentioned pulverizing jet quantity combusted, and described steam generating capacity determinator is measured the steam generating capacity according to the quantity combusted of being controlled by combustion control device.
Have, be preferably, described steam generating capacity determinator comprises the secondary delivery temperature determinator of the secondary delivery temperature that is used to measure described pulverizing jet, measures the discharge rate of steam according to this secondary delivery temperature.
Again, be preferably, described steam generating capacity determinator comprises a delivery temperature determinator of a delivery temperature that is used to measure described pulverizing jet, described secondary delivery temperature determinator is measured the secondary delivery temperature according to the rate of heat exchange of an above-mentioned delivery temperature and above-mentioned heat exchanger.
Again, be preferably, a described delivery temperature determinator is measured one time delivery temperature according to the quantity combusted of the above-mentioned pulverizing jet of being controlled by above-mentioned combustion control device.
Again, be preferably, described burner comprises: the streamflow determinator of measuring the streamflow in the above-mentioned water pipe, be located in the described water pipe, be positioned at described heat exchanger the upstream, be used to measure the inflow temperature determinator of inflow temperature, be positioned at described heat exchanger the downstream, be used to measure the hot-water supply temperature measuring apparatus of hot-water supply temperature, and the target hot water supply temperature determinator of target setting hot-water supply temperature;
Above-mentioned combustion control device is when controlling according to above-mentioned streamflow, inflow temperature and target offerings hot water temperature and to the quantity combusted of described pulverizing jet, also regulate the quantity combusted of this pulverizing jet, to reduce the poor of described hot-water supply temperature and described target offerings hot water temperature.
The working of an invention form
Below, with reference to accompanying drawing, just the example of burner of the present invention is done an explanation.
Figure 1 shows that the structure key diagram of the water heater (burner) of example of the present invention, Fig. 2 and Figure 3 shows that the job description figure of the water heater (burner) of example of the present invention, Figure 4 shows that the graph of a relation of the duration of valve opening α T of quantity combusted Q and draining generating capacity v and open and close valve, Figure 5 shows that draining in and the test key diagram of efficient, Fig. 6 is the key diagram of the assay method of the draining generating capacity in other examples.
Water heater shown in Figure 1 comprises water pipe 1.Be equipped with pulverizing jet 2 in the x of combustion chamber, be arranged on the sensible heat exchanger 3 of pulverizing jet 2 belows and be arranged at the latent heat exchanger 4 of sensible heat exchanger 3 belows.In addition, described water heater also comprises dewfall on latent heat exchanger 4 and drip in the water of combustion chamber x diapire and collect, discharge in outer drainpipe 5 and controller 6 that the operation of water heater is controlled.In the way of drainpipe 5, be provided with the secondary tank 5b that is used to store a tank 5a of draining and can bears the draining of overflowing from tank 5a.
The structure of water pipe 1 is arranged to process latent heat exchanger 4 earlier, passes through sensible heat exchanger 3 again.Water pipe 1 is provided with from the upstream branch of latent heat exchanger 4, collaborates in the Bypass hose 7 in sensible heat exchanger 3 downstreams.Bypass hose 7 is provided with the bypass flow regulator 7a that regulates its streamflow.Again, water pipe 1 is provided with from Bypass hose 7 upstream branch, leads to the shunt pipe 8 of the secondary tank 5b drainpipe 5 way.Shunt pipe 8 is provided with open and close valve 8a and can be subjected to the influence of variation in water pressure and streamflow is kept certain steady flow metered valve 8b.Be positioned at the shunt position upstream end of shunt pipe 8 on the water pipe 1, be provided with inflow temperature meter 1a.In the downstream, shunt position of shunt pipe 8 and the shunt position upstream end that is positioned at Bypass hose 7 be provided with flowmeter 1b.Be provided with main flow control valve 1c near the shunt position of Bypass hose 7, be provided with the hot water temperature in the downstream of sensible heat exchanger 3 and count 1d, annex is provided with leading 1e in downstream.
Be connected with gas supply pipe 9 on the pulverizing jet 2, gas supply pipe 9 is provided with combustion gas main solenoid valve 9a and is used to regulate the gas control valve 9b that supplies with gas quantity to pulverizing jet 2.Be provided with combustion fans 10 from combustion air to pulverizing jet 2 that supply with in the x of combustion chamber.In the x of combustion chamber, be formed with the exhaust outlet 11 of the burning and gas-exhausting that is used to discharge pulverizing jet 2.
Controller 6 is provided with the burning control part 12 of the quantity combusted that is used to control pulverizing jet 2 and is used to control the open and close valve control part 13 of the periodic open and close valve events of open and close valve 8a.Open and close valve control part 13 comprises that draining generating capacity determination part 14, water consumption determination portion 15, duration of valve opening determine device 16 and timer 17.
Draining generating capacity determination part 14 is measured the draining generating capacity.Water consumption determination portion 15 determines must be used for described draining is neutralized to the water yield of pH5-9 according to measured draining generating capacity.Duration of valve opening determination portion 16 is determined interior shared the opening the time of switching cycle of open and close valve 8a according to the determined water yield.Timer 17 is according to the above-mentioned instrumentation time, is used to control the timing of the open and close of open and close valve 8a.
Below, with reference to the flow chart of Fig. 2, do an explanation with regard to the control method of the water heater of said structure.
At first, judge whether leading 1e opens, particularly, judge work as in the quantitative water pipe current when water pipe 1, from the flowmeter 1b flow signal output (step 1) of definite value whether to some extent? export described flow signal as confirming from flowmeter 1b, in tap 1e is opened (YES in the step 1), combustion fans 10 starts, and combustion gas main solenoid valve 9a opens.Follow the startup of igniter (not shown), pulverizing jet 2 take fire (step 2).Again, show whether to be in the following draining to be set in " 0 " that demonstration should carry out the 1st control and the later arbitrary inferior parameter n that controls of the 2nd control is set in " 1 " (step 3) with the neutralization action display F that moves.
Then, control (step 4) by the burning of 12 pairs of pulverizing jets 2 of burning control part.Particularly, at first.The represented intensification amount of difference of the inflow temperature of measuring according to the hot water temperature who sets by the remote controller (not shown) with by inflow temperature meter 1a, reach the flow of being measured by flowmeter 1b, aperture by gas control valve 9b is regulated, the initiation combustion amount P of control pulverizing jet 2.Then, to count the leaving water temperature that 1d measures by the hot water temperature consistent with the leaving water temperature that had before set in order to make, and the quantity combusted P of pulverizing jet 2 is carried out reaction type control.
Follow the intensification of the water of the water pipe 1 of flowing through, the burning and gas-exhausting of pulverizing jet 2 is by making with the heat exchange of sensible heat exchanger 3 after temperature descends, again by with the heat exchange of latent heat exchanger 4, temperature is descended.Be contained in steam in the burning and gas-exhausting along with temperature descends, dewfall is dripped after latent heat exchanger 4, becomes draining and discharges via drainpipe 5.Draining as previously mentioned, because of the influence that is subjected to being contained in nitrogen oxide (NOx) in the burning and gas-exhausting etc. becomes acidity.
Secondly, record the quantity combusted Q of pulverizing jet 2 by draining generating capacity determination part 14, and, according to relation shown in Figure 4, record draining generating capacity v (step 5).Again, determine water consumptions, so that water consumption is a 2.0-6.0 (step 6) with respect to the ratio of draining generating capacity v by water yield determination portion 15.Determine the quantity combusted Q of pulverizing jet 2 again by duration of valve opening determination portion 16, and, according to relation shown in Figure 4, determine to be arranged in shared duration of valve opening α T (0＜α＜the 1) (step 7) of switching period T of open and close valve 8a.
Secondly, according to neutralization action display F, judge whether to be in the draining and action in, promptly, do you judge that open and close valve 8a is in open mode or is in closed condition (step 8)? as be not in the draining and action in, when i.e. neutralization action display F shows " 0 " (YES in the step 8), the instrumentation time t of timer 17 is set in " 0 ", and neutralization action display F shows " 1 " (step 9).Thereafter, judge parameter n (step 10), as parameter n is " 1 ", promptly, judge that pulverizing jet 2 is after taking fire, but also do not open (YES in the step 10) in the open and close valve 8a, parameter n changes to " 2 ", (be equivalent to " the 1st cycle " of the present invention reach " institute fixes time ") (step 11) that period T is set at 1 minute.On the other hand, if judge that parameter n is " 2 ", promptly, judge that pulverizing jet 2 is after taking fire, open and close valve 8a opens (NO in the step 10) in 1 time at least, then the length of duration of valve opening α T is extended for 5 times, and period T is set in 5 minute (be equivalent to of the present invention " 2nd cycle ") (step 12) longer than the 1st cycle.
At this moment, open and close valve 8a opens (step 13), neutralization action beginning.The instrumentation time t of timer 17 arrives and opens time α T (YES in the step 14), closes to open and close valve 8a (during step 15), to neutralize to move and still proceed.In neutralization action,, can prevent to flow to the output of supplying with water in the water pipe of secondary tank 5b corresponding to the hydraulic pressure change of water pipe 1 and change by shunt pipe 8 by steady flow metered valve 8b again.Then, when the instrumentation time of timer 17 t when arrive opening and closing period T (YES in the step 16), neutralization action display F shows " 0 " (step 17).
According to above-mentioned water heater, after pulverizing jet 2 took fire, (step 3), in case open and close open and close valve 8a (step 13,15) then, parameter n changed to " 2 " (step 11) immediately to be set at " 1 " as parameter n.After this, because in step 10, become NO, so the switching period T of open and close valve 8a is extended for 5 times original length (step 12).Thus, as shown in Figure 3, open and close valve 8a begins from the burning of pulverizing jet 2, to institute fix time (1 minute) end, open and close with the 1st cycle (1 minute), thereafter, whenever open and close once through the 2nd cycle (5 minutes).
Therefore, use water heater in the time about 1 minute, when as shown in Figure 3A local out of service, open and close valve 8a at least once is in closed condition, and water is neutralized in shunt pipe 8 with letting drift, thereby, saved water.Again,, therefore, only using water heater to be about 1 minute occasion, the switching number of times of open and close valve 8a can restrained at 1 time because fix time is set at 1 minute that equates simultaneously with the 1st cycle.Have again because based on higher this experiential fact of the frequency of utilization of service time about 1 minute of common cooking operation etc., with fix time and be set at 1 minute.Therefore, can in the switching number of times of restraining open and close valve 8a, carry out the neutralization of draining reliably.
Again, when taking a shower or using hot water heating etc., water heater uses with the long-time continuous that surpasses 1 minute usually, at this moment, can consider in the moment shown in Fig. 3 B out of service.At this moment, compare, can restrain the switching number of times of open and close valve 8a with the occasion that opens and closes with the 1st cycle (1 minute) open and close valve 8a usually.Thus, prolong the service life of open and close valve 8a, can restrain open and close valve 8a and produce the number of times that opens and closes noise.
Determine that the time of opening of open and close valve 8a is positioned at the early stage in the 1st cycle and the 2nd cycle.For this reason, in Fig. 3, be respectively when stop the operation of water heater the early stage of putting the 1st represented cycle of C, D and the 2nd cycle separately, can avoid causing discharge deficiency in the shunt pipe 8, the state of affairs that draining is fully neutralized because of closing of open and close valve 8a.
Have again, the water yield in the water pipe is controlled at 2.0-6.0 with respect to the mixing ratio of draining generating capacity v, by this, acid effluent fully can be neutralized to the degree that satisfies standard of drainage.For showing this point, the present application person tests, and it the results are shown in Fig. 5.This measuring to pH be about 4, with the draining that the water yield ratio of 20 (ml/ branches) generates, respectively water in the water pipe (square), buck (prismatic), pure water (triangle) are slowly added, the variation of the pH when mixing.
As shown in Figure 5, in the occasion of using buck, such situation might take place: pH is meta-alkalescence too, and might surpass the pH5-9 as environmental criteria, causes being used for the draining neutralization.Again, when using pure water, even increase the pure water combined amount, the pH of draining and does not change still about 5, in it and efficient poor.This can think that pure water is in time through having adsorbed carbon dioxide in air, so near acid reason.
On the other hand, in making water pipe during water, can be when not using buck, its pH is alkalescence relatively, its with pure water relatively, in efficient also than its height.So, water has shown neutralising capacity in the water pipe, and this can think, based on the hydroxyl ion (OH that is contained in calcium carbonate in the former water etc. -) reason that exists.By the mixing ratio of water in the water pipe for the draining generating capacity is set at more than 2.0, draining pH can be neutralized to scope as the pH5-9 of environmental criteria.Again, by the mixing ratio of water in the water pipe for the draining generating capacity increased to about pH6, then draining becomes the state of abundant neutralization, and increase mixing ratio again, the use amount of water in the water pipe is increased,, above-mentioned mixing ratio can be set in below 6.0 so there is not this necessity.
In this example, burner is a water heater, but as other examples of above-mentioned burner, can be heating boiler etc. also, follows the burning of pulverizing jet can generate all burners of acid effluent in heat exchanger.
Again, in this example, draining generating capacity determination part 14 is according to relation shown in Figure 3, records draining generating capacity v's by the quantity combusted Q of pulverizing jet 2, but, also can record draining generating capacity v according to following structures and method by draining generating capacity determination part 20 as other example.
That is, can replace the step 5 of Fig. 2, record the draining generating capacity according to flow chart shown in Figure 6.Again, though do not show among the figure, draining generating capacity determination part 14 comprises steam generating capacity determination part, and steam discharge rate determination part.Steam generating capacity determination part records the steam generating capacity v in the exhaust that is contained in pulverizing jet 2 according to the quantity combusted Q that is controlled by burning control part 12 1Steam discharge rate determination part records the steam discharge rate v in the secondary exhaust that is contained in pulverizing jet 2 2, and have delivery temperature determination part and secondary delivery temperature determination part.Delivery temperature determination part records delivery temperature Θ one time according to the quantity combusted Q of the pulverizing jet of being controlled by burning control part 13 2 1Secondary delivery temperature determination part keeps the data of the rate of heat exchange η of sensible heat exchanger 3 and latent heat exchanger 4, according to these data and a measured delivery temperature Θ 1, measure secondary delivery temperature Θ 2
According to the water heater of said structure, at first, steam generating capacity determinator uses following formula (1) according to quantity combusted Q, records generating capacity v 1(step 5-1).Again, the k value is according to the kind difference of the fuel of pulverizing jet 2, and different.
v 1=k·Q ……(1)
Secondly, room temperature is made as Θ, the specific heat of burning and gas-exhausting is made as C, and the quality of fuel flow is made as W f, the mass flow of air is made as W a, can record delivery temperature Θ one time from following formula (2) 1(step 5-2).Here, delivery temperature Θ 1The temperature that refers to the heat exchange burning and gas-exhausting before of sensible heat exchanger 3 and latent heat exchanger 4.
Θ 1=Θ+Q/{C(W f+W a)} ……(2)
Then, utilize formula (3), can be from a delivery temperature Θ 1, sensible heat exchanger 3 and latent heat exchanger 4 rate of heat exchange η, try to achieve secondary delivery temperature Θ 2(step 5-3).Here, secondary delivery temperature Θ 2Finger sensible heat exchanger 3 and latent heat exchanger 4 are carried out the temperature of the burning and gas-exhausting after the heat exchange.Again, rate of heat exchange η is one to show that sensible heat exchanger 3 and latent heat exchanger 4 capture the parameter of heat from burning and gas-exhausting, and can be according to height changes institute's 1 definite relation and revises with the height of inflow temperature.
Θ 2=Θ 1-η(Θ 1-Θ) ……(3)
Be contained in the steam discharge rate v in the second-time burning exhaust 2Available secondary delivery temperature Θ 2And temperature-steam conversion table is measured (step 5-4).At last, from steam generating capacity v 1And steam discharge rate v 2Record draining generating capacity v (step 5-5) with following formula (4).
v=v 1-v 2 ……(4)
Via said sequence, can record the draining generating capacity v that the change corresponding to various physical quantitys changes according to quantity combusted Q.
The simple declaration of accompanying drawing
Fig. 1 is the structure key diagram of the water heater (burner) in this example.
Fig. 2 is the job description figure of the water heater of this example.
Fig. 3 is the job description figure of the water heater of this example.
Fig. 4 is the graph of a relation of the duration of valve opening α T of quantity combusted Q and draining generating capacity v and open and close valve.
Fig. 5 is in the draining and the description of test figure of efficient.
Fig. 6 is the key diagram of the assay method of the draining generating capacity in other examples.
Among the figure, 1 is water pipe, and 2 is pulverizing jet, 3 is sensible heat exchanger, and 4 is latent heat exchanger, and 5 is drainpipe, 8 is shunt pipe, 8a is an open and close valve, and 8b is the steady flow metered valve, and 12 are the burning control part, 13 is the open and close valve control part, 14 are draining generating capacity determination part, and 15 is water yield determination portion, and 16 is the duration of valve opening determination portion.

Claims (12)

1. burner, described burner comprises: pulverizing jet, water pipe, nationality by and the burning and gas-exhausting of described pulverizing jet between the heat exchange carried out and heat exchanger that the water in the described water pipe is heated up, the drainpipe that the draining that the water vapour that is contained in the described burning and gas-exhausting is taken place on this heat exchanger because of dewfall is discharged, from this heat exchanger upstream end, from described water pipe branch and collaborate shunt pipe in described drainpipe, open and close the open and close valve of described shunt pipe, the open and close valve control device that described open and close valve is is periodically opened and closed, measure the draining generating capacity determinator of draining generating capacity, according to described draining generating capacity, determine that the water consumption of this draining of neutralization institute palpus water consumption determines device, and, determine that the duration of valve opening that the open and close valve time of opening accounts for ratio of whole switching cycle of described open and close valve determines device according to described water consumption; It is characterized in that:
Described open and close valve control device is according to determining the determined duration of valve opening of device by described duration of valve opening, takes fire from pulverizing jet that to reach institute be the 1st cycle before fixing time, and opens and closes described open and close valve when above-mentioned in the cycle; Be 2nd cycle long in cycle through fix time back, in the 2nd cycle, open and close described open and close valve than the 1st cycle.
2. burner as claimed in claim 1 is characterized in that, it is 1 minute that above-mentioned institute fixes time.
3. burner as claimed in claim 1 or 2 is characterized in that, above-mentioned institute fix time be set at described the 1st cycle roughly the same.
4. burner as claimed in claim 1 is characterized in that, described duration of valve opening determines that device determines the duration of valve opening of described open and close valve, makes it account for the early stage in described the 1st cycle.
5. burner as claimed in claim 4 is characterized in that, described duration of valve opening determines that device determines the duration of valve opening of described open and close valve, makes it account for the early stage in described the 2nd cycle.
6. burner as claimed in claim 1 is characterized in that, described water consumption determines that device determines described water consumption, and making itself and ratio by the measured draining generating capacity of described draining generating capacity determinator is 2.0-6.0.
7. burner as claimed in claim 1, it is characterized in that, described draining generating capacity determinator comprises: be used for measuring the steam generating capacity determinator of the contained steam generating capacity of an exhaust of described pulverizing jet, and be used for measuring the steam discharge rate determinator of the contained steam discharge rate of the secondary exhaust of described pulverizing jet; Described draining generating capacity determinator is measured the generating capacity of draining by the described steam discharge rate of deduction from described steam generating capacity.
8. burner as claimed in claim 7, it is characterized in that, described burner has the combustion control device that is used to control described pulverizing jet quantity combusted, and described steam generating capacity determinator is measured the generating capacity of steam according to the quantity combusted of being controlled by this combustion control device.
9. burner as claimed in claim 8, it is characterized in that, described steam discharge rate determinator comprises the secondary delivery temperature determinator of the secondary delivery temperature that is used to measure described pulverizing jet, and described steam discharge rate determinator is measured the steam discharge rate according to this secondary delivery temperature.
10. burner as claimed in claim 9, it is characterized in that, described device comprises a delivery temperature determinator of a delivery temperature that is used to measure described pulverizing jet, described secondary delivery temperature determinator is measured the secondary delivery temperature according to the rate of heat exchange of an above-mentioned delivery temperature and above-mentioned heat exchanger.
11. burner as claimed in claim 10 is characterized in that, a described delivery temperature determinator is measured one time delivery temperature according to the quantity combusted of the above-mentioned pulverizing jet of being controlled by above-mentioned combustion control device.
12. each described burner as claim 8-11, it is characterized in that, described burner comprises: the streamflow determinator of measuring the streamflow in the above-mentioned water pipe, be located in the described water pipe, be positioned at described heat exchanger the upstream, be used to measure the inflow temperature determinator of inflow temperature, be positioned at described heat exchanger the downstream, be used to measure the hot-water supply temperature measuring apparatus of hot-water supply temperature, and the target hot water supply temperature setting device of target setting hot-water supply temperature;
Above-mentioned combustion control device is when controlling according to above-mentioned streamflow, inflow temperature and target offerings hot water temperature and to the quantity combusted of described pulverizing jet, regulate the quantity combusted of this pulverizing jet, so that described hot-water supply temperature and described target offerings hot water temperature's difference reduces.
CNB001283057A 1999-11-12 2000-11-10 Combustion device Expired - Fee Related CN1159554C (en)

Applications Claiming Priority (2)

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JP32286999A JP3646031B2 (en) 1999-11-12 1999-11-12 Control method of latent heat recovery type water heater
JP322869/1999 1999-11-12

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CN1296157A true CN1296157A (en) 2001-05-23
CN1159554C CN1159554C (en) 2004-07-28

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CN109579274A (en) * 2018-09-26 2019-04-05 中山市恒乐电器有限公司 A kind of water heater and its temprature control method with temperature control equipment

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KR20010050134A (en) 2001-06-15
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CN1159554C (en) 2004-07-28
JP2001141308A (en) 2001-05-25

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