CN204923478U - Two sensing combustion system - Google Patents
Two sensing combustion system Download PDFInfo
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- CN204923478U CN204923478U CN201520739589.7U CN201520739589U CN204923478U CN 204923478 U CN204923478 U CN 204923478U CN 201520739589 U CN201520739589 U CN 201520739589U CN 204923478 U CN204923478 U CN 204923478U
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Abstract
This application embodiment discloses a two sensing combustion system. It includes: a combustor. For the combustor provides the poleless speed adjusting fan of air, with the gas pipeline of combustor intercommunication, the setting is in the last proportional valve of gas pipeline, with the poleless speed adjusting fan with proportional valve electric connection's the control unit, detect gas channel's a pressure signal's a pressure sensor subassembly, detect gas pipeline's the 2nd pressure signal's the 2nd pressure sensor subassembly, a memory. With the memory the signal output part of a pressure sensor subassembly the signal output part of the 2nd pressure sensor subassembly the poleless speed adjusting fan with proportional valve electric connection's the control unit. The atmospheric pressure of this application through to gas channel and gas pipeline detects, the work occasion of the adaptation difference that the realization can the preferred.
Description
Technical field
The application relates to field of water heaters, particularly a kind of double-sensing combustion system.
Background technology
In prior art, different with the demand of temperature according to hot water amount, different requirements is also had to the thermic load of the burner of gas heater or wall-hung boiler.Such as when a large amount of hot water of needs, need burner to have larger thermic load, and when needing a small amount of hot water, need burner to have less thermic load.
At present, mainly the electric current of comparative example valve and blower fan controls, and then realizes the thermic load of control combustion device.Concrete, when needing larger thermic load, larger electric current can be provided by comparative example valve, to make proportioning valve can have larger aperture, thus more combustion gas passing ratio valve arrival burner being burnt; Also can provide larger electric current to blower fan, make blower fan have larger rotating speed to promote combustion air flow, thus combustion gas can be burnt on the burner preferably, thus make burner have larger thermic load.
Under ideal conditions, there is corresponding relation in the electric current of proportioning valve and the electric current of blower fan.Namely determine that electric current makes proportioning valve have an aperture determined for one, there is corresponding relation in the gas flow of passing ratio valve and the aperture of proportioning valve under normal circumstances, because required combustion air flow when gas flow and burning exists corresponding relation, make to there is corresponding relation between the electric current of proportioning valve and combustion air flow.Further, form described combustion air flow and required rotation speed of fan and electric current and all there is corresponding relation, thus make to there is corresponding relation between the electric current of proportioning valve and the electric current of blower fan.Based on above-mentioned corresponding relation, make gas heater of the prior art or wall-hung boiler product, the mode adopting the electric current of corresponding control ratio valve and motor, the thermic load of control combustion device more.
But, in actual life, the working environment of the gas-fired water heater of different geographical may be different, existing gas-fired water heater well can use in some regions, but may occur that the thermic load of burner is lower in some other region, or the phenomenon such as burner combustion is insufficient.Be exemplified as, the gaseous-pressure of different geographical may not be identical, so sets according to general standard at the electric current of proportioning valve, is difficult to adapt to the on the low side or higher region of gaseous-pressure., the phenomenon that burning load is on the low side may be there is in the region that such as gaseous-pressure is on the low side; And the region that gaseous-pressure is higher, the phenomenon that fuel gas buring is insufficient may be there is.Moreover for same workplace, gas pipe pressure also can change, and can affect the gas flow through proportioning valve, also may occur the problems referred to above.
Utility model content
The object of the application's embodiment be to provide a kind of can the double-sensing combustion system of the different combustion gas situation of better adaptation.
For solving the problems of the technologies described above, the application provides a kind of double-sensing combustion system, has the gas flow from air inlet to exhaust opening in described double-sensing combustion system, and described double-sensing combustion system comprises: burner; For described burner provides the stepless time adjustment blower fan of air; The fuel gas pipeline be communicated with described burner; Be arranged on the proportioning valve on described fuel gas pipeline; The control unit be electrically connected with described stepless time adjustment blower fan and described proportioning valve; Detect the first pressure sensor assembly of the first pressure signal of described gas flow; Detect the second pressure sensor assembly of the second pressure signal of described fuel gas pipeline; Memory; The control unit be electrically connected with the signal output part of the signal output part of described memory, described first pressure sensor assembly, described second pressure sensor assembly, described stepless time adjustment blower fan and described proportioning valve.
Further, described fuel gas pipeline and gas pipeline have connecting portion, and described gas pipeline is described fuel gas pipeline supply combustion gas; Described second pressure signal is the pressure signal between the port of export of described fuel gas pipeline and described connecting portion.
Further, described proportioning valve is between described connecting portion and the described port of export, and described second pressure signal is the pressure signal between described proportioning valve and the described port of export.
Further, along the direction of the air current flow of described gas flow, described stepless time adjustment blower fan is in the upstream of described burner.
Further, along the direction of the air current flow of described gas flow, described stepless time adjustment blower fan is in the downstream of described burner.
Further, the first pressure signal that described first pressure sensor assembly detects is the pressure signal of the impeller upstream of described stepless time adjustment blower fan.
Further, described first pressure sensor assembly has the first pipeline be communicated with the predetermined pressure measurement position, impeller downstream first of described stepless time adjustment blower fan and the second pipeline be communicated with predetermined pressure measurement position, the impeller downstream second of described stepless time adjustment blower fan, and described first predetermined pressure measurement position is positioned at the upstream of described second predetermined pressure measurement position.
Further, described first pressure sensor assembly detects described first pipeline and obtains the 3rd pressure signal, detects described second pipeline and obtains the 4th pressure signal; Described first pressure sensor assembly is the difference of described 3rd pressure signal and described 4th pressure signal to the first pressure signal that described control unit exports.
Further, described double-sensing combustion system also comprises the premix chamber be communicated with described stepless time adjustment blower fan with the port of export of described burner, described fuel gas pipeline; The combustion gas of flowing out from described fuel gas pipeline can arrive described burner with the air that described gas flow provides after described premix chamber mixes.
Further, described proportioning valve has the first housing and the second housing; Described first housing is formed with fuel gas inlet and gas outlet, and the spool of described proportioning valve is arranged on described gas outlet; The epithelium of described proportioning valve is arranged between described first housing and the second housing, and described epithelium is connected with the spool driving mechanism of described proportioning valve; Described second housing and described epithelium form confined space; Described double-sensing combustion system also comprises the 3rd pipeline be communicated with described premix chamber by described confined space.
Further, described second pressure sensor assembly has the 4th pipeline be communicated with the port of export upstream of described fuel gas pipeline, and the 5th pipeline of port of export communicating downstream with described fuel gas pipeline.
Further, described 4th pipeline is connected between the described port of export and described proportioning valve, and described 5th pipeline is communicated with described premix chamber.
Further, described second pressure sensor assembly detects described 4th pipeline and obtains the 5th pressure signal, detects described 5th pipeline and obtains the 6th pressure signal; Described second pressure sensor assembly is the difference of described 5th pressure signal and described 6th pressure signal to the second pressure signal that described control unit exports.
Further, described 3rd pipeline adopts a pipeline to be connected with described premix chamber after being connected with described 5th pipeline.
Further, described burner is provided with the inductive needle of the ion current signal value in flame detection combustion process; The output of described inductive needle is connected with described control unit.
Further, described burner comprises combustion zone and detection zone, and the flame of described combustion zone is more stable than the flame of described detection zone, and described inductive needle is arranged at the top of described burner detection zone.
The technical scheme provided from above the application's embodiment, by the second pressure sensor assembly of the first pressure sensor assembly and fuel gas pipeline that arrange gas flow, the gaseous-pressure state of double-sensing combustion system for workplace can be realized, comparative example valve and stepless speed regulating blower fan control, to adapt to the gaseous-pressure of workplace.When controlling, selectively control at least one in stepless time adjustment blower fan or proportioning valve, to meet double-sensing combustion system in the course of the work to the demand of heat energy.And then, make this double-sensing combustion system for different working environments, the pressure of gas pipeline can be comprised, and the blast etc. in the external world, preferably can control to coordinate proportioning valve and stepless time adjustment blower fan, realize the work that combustion gas thermal can be stable.
Accompanying drawing explanation
In order to be illustrated more clearly in the application's embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the gas heater that Fig. 1 provides for the application's embodiment;
The module diagram relating to automatically controlled part that Fig. 2 provides for the application's embodiment;
The corresponding relation figure of the first object pressure signal that Fig. 3 provides for the application's embodiment and the second goal pressure signal;
The structural representation of the proportioning valve that Fig. 4 provides for the application's embodiment.
Detailed description of the invention
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the application's embodiment, technical scheme in the application's embodiment is clearly and completely described, obviously, described embodiment is only the application's part embodiment, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.
See also Fig. 1 and Fig. 2.The double-sensing combustion system 10 that the embodiment of the application provides, its inside has the gas flow from air inlet (not shown) to exhaust opening 13.Double-sensing combustion system 10 comprises: burner 12; For described burner 12 provides the stepless time adjustment blower fan 14 of air; The fuel gas pipeline 16 be communicated with described burner 12; Be arranged on the proportioning valve 18 on described fuel gas pipeline 16; The control unit 20 be electrically connected with described stepless time adjustment blower fan 14 and described proportioning valve 18; Detect the first pressure sensor assembly 22 of the first pressure signal of described gas flow; Detect the second pressure sensor assembly 26 of the second pressure signal of described fuel gas pipeline 16; Memory 28; Described in the control unit be electrically connected with the signal output part of described memory 28, described first pressure sensor assembly 22, the signal output part of described second pressure sensor assembly 26, described stepless time adjustment blower fan 14 and described proportioning valve 18, control unit 20 controls described stepless time adjustment blower fan 14 and/or described proportioning valve 18 according to described first pressure signal, described second pressure signal and described corresponding relation.
In the application's embodiment, by the second pressure sensor assembly of the first pressure sensor assembly and fuel gas pipeline that arrange stepless time adjustment blower fan, the gaseous-pressure state of double-sensing combustion system for workplace can be realized, comparative example valve and stepless speed regulating blower fan control, to adapt to the gaseous-pressure of workplace.When controlling, selectively control at least one in stepless time adjustment blower fan or proportioning valve, to meet double-sensing combustion system in the course of the work to the demand of heat energy.And then, make this double-sensing combustion system for different working environments, the pressure of gas pipeline can be comprised, and the blast etc. in the external world, preferably can control to coordinate proportioning valve and stepless time adjustment blower fan, realize the work that combustion gas thermal can be stable.Moreover by mating first object pressure signal and the second pressure signal, realize comparatively accurately ensureing actual air mass flow and gas flow ratio optimization, thus make fuel gas buring comparatively abundant, the pollutant of discharge can be very low.
The gas flow of double-sensing combustion system 10 can be from the air inlet of its housing to burner 12, the gas passage that formed of the heat exchanger 30 of double-sensing combustion system 10, stepless time adjustment blower fan 14 and smoke exhaust pipe 32.Exhaust opening 13 can be the outlet of smoke exhaust pipe 32.Certainly, form the order of gas flow and be not limited to foregoing description, gas flow can also be from air inlet to stepless speed regulating blower fan 14, the heat exchanger 30 of burner 12, double-sensing combustion system 10 and the gas passage of smoke exhaust pipe 32 formation.Certainly, one of ordinary skill in the art, under the enlightenment of present techniques marrow, can also make other change, as long as but its function realized and the effect that reaches and the application same or similar, all should be covered by the application's protection domain.
Combustion gas in fuel gas pipeline 16 can be carried out burning to release heat energy at burner 12 place, and then the heat exchanger of double-sensing combustion system 10 can absorb heat energy and heats the water flowed through.Proportioning valve 18 is arranged on fuel gas pipeline 16, can pass through the electric current of control ratio valve 18 and then the aperture of control ratio valve 18, and then realizes the gas quantity controlling passing ratio valve 18.Thus, the gas quantity controlling to arrive burner 12 can be realized.Gas quantity difference due to burner 12 can affect the thermic load that burner 12 burns, and realizes reaching the function controlling hot water amount and temperature.
Stepless time adjustment blower fan 14 can be a DC fan, by controlling the electric current of stepless time adjustment blower fan 14, and then can control the rotating speed of stepless time adjustment blower fan 14.The rotating speed of stepless time adjustment blower fan 14 can affect the flowing velocity of gas in described gas flow.Under usual state, the rotating speed of stepless time adjustment blower fan 14 is faster, and the gas flow rates in described gas flow is faster; The rotating speed of stepless speed regulating blower fan 14 is slower, and the gas flow rates in described gas flow is slower.Stepless time adjustment blower fan 14 can flow from air inlet to the direction of exhaust opening 13 by the gas in driving gas runner.In this process, enter the air in gas flow from air inlet, burning can be carried out by combustion gas at burner 12 and be utilized.Namely stepless time adjustment blower fan 14 drives gas to flow, and thinks that the fuel gas buring of burner 12 provides air.Stepless time adjustment blower fan 14 specifically can comprise: Blower Housing, is arranged on the impeller in described Blower Housing, and drives the motor of described wheel rotation.Wherein said motor can be arranged in described Blower Housing, also can be arranged on outside described Blower Housing.
Control unit 20 is electrically connected with stepless time adjustment blower fan 14 and proportioning valve 18.Control unit 20 can pass through the electric current controlling stepless speed regulating blower fan 14, to control the rotating speed of stepless speed regulating blower fan 14.Control unit 20 can pass through the electric current of control ratio valve 18, with the aperture of control ratio valve 18.Control unit 20 can include microprocessor, and the fan drive circuit be connected with microprocessor and stepless speed regulating blower fan 14, and the proportioning valve drive circuit be connected with microprocessor and proportioning valve 18.
First pressure sensor assembly 22 can gather the first pressure signal in gas flow.First pressure signal can represent the gas pressure state in gas flow.First pressure sensor assembly 22 is connected with control unit 20, makes it possible to the first pressure signal gathered to be supplied to control unit 20.Second pressure sensor assembly 26 can gather second pressure signal in precalculated position in gas pipeline 16.In like manner the second pressure signal is for representing the gas pressure state in gas pipeline 16.Second pressure sensor 26 is connected with control unit 20, makes it possible to the second pressure signal gathered to be supplied to control unit 20.Concrete, such as the first pressure signal and the second pressure signal are supplied to microprocessor.
Memory 28 may be used for storing data.Memory 28 can be magnetic storage, also can be digital storage.Preferably, it is digital storage.Usually when double-sensing combustion system works, user instruction can be accepted, the temperature of setting hot water.So according to the flow of this hot water temperature and water supply, required gas flow and the air mass flow needed for those fuel gas burings just can be determined.So, between air mass flow and gas flow, just there is a corresponding relation.Further, certain air mass flow and certain gas flow can distinguish a corresponding gas pressure state, using the two gas pressure corresponding respectively as first object pressure signal and the second goal pressure signal.Control unit 20 like this is just provided with the benchmark controlling stepless time adjustment blower fan 14 and proportioning valve 18.Control unit 20 can control the electric current of stepless time adjustment blower fan 14 and proportioning valve 18 according to above-mentioned corresponding relation.Concrete, gas pressure state can be characterized by pressure differential.
In a concrete embodiment, current setting leaving water temperature is 40 degree, and control unit 20 can control stepless time adjustment blower fan 14 at a desired speed, and control ratio valve 18 is a predetermined aperture.Now suppose that the leaving water temperature of double-sensing combustion system 10 may be 35 degree, needs to promote water temperature further.Control unit 20 can control stepless time adjustment blower fan 14 and increase speed, and control ratio valve 18 increases aperture, in this process, control unit 20 can according to the corresponding relation between first object pressure signal and the second goal pressure signal, and adjustment stepless time adjustment blower fan 14 and proportioning valve 18 make the increase corresponding to the second pressure signal of the first pressure signal.When leaving water temperature arrives setting leaving water temperature, control unit 20 can control stepless time adjustment blower fan 14 and maintain current rotating speed, and control ratio valve 18 maintains current aperture, and then realizes maintaining the first pressure signal and the second pressure signal according to corresponding relation.
Be appreciated that in the concrete process regulated, the aperture that proportioning valve 18 may occur to maintain is constant, controls stepless time adjustment blower fan 14 and adjusts rotating speed; Or the rotating speed maintaining stepless time adjustment blower fan 14 is constant, and control ratio valve 18 adjusts aperture; Or control stepless time adjustment blower fan 14 simultaneously and adjust rotating speed, and control ratio valve 18 adjusts aperture.
In the present embodiment, corresponding relation can comprise the function that is expressed relation between first object pressure signal and the second goal pressure signal.And then obtain corresponding first object pressure signal or the second goal pressure signal by the computing of function.Corresponding relation can also comprise a tables of data, and in this tables of data, corresponding record has the first object pressure signal and the second goal pressure signal that record by experiment.Concrete, can consult Fig. 3, the corresponding relation between first object pressure signal and the second goal pressure signal can be characterized by function Y=KX+B.Wherein Y can represent the first pressure signal, and X can represent the second pressure signal, the proportionality coefficient therebetween that K can draw for experimentally statistical law, and B can be a constant.
In one embodiment, described fuel gas pipeline 16 has connecting portion with gas pipeline, and described gas pipeline is that described fuel gas pipeline 16 supplies combustion gas; Described second pressure signal is the pressure signal between the port of export 34 of described fuel gas pipeline 16 and described connecting portion.Gas pipeline can be communal facility, is the pipeline of each building delivery of fuel gas.Fuel gas pipeline 16 is the pipeline be directly connected with double-sensing combustion system 10.Usually, the internal diameter of fuel gas pipeline 16 is less than the internal diameter of gas pipeline.Make gas pipeline can provide combustion gas for multiple user.Second pressure signal is the pressure signal between the port of export 34 and connecting portion, makes the second pressure signal may be used for characterizing the pressure state of the combustion gas entering double-sensing combustion system 10, is conducive to the aperture of the accurate control ratio valve 18 of control unit.
In one embodiment, described proportioning valve 18 is between described connecting portion and the described port of export 34, and described second pressure signal is the pressure signal between described proportioning valve 18 and the described port of export 34.So be arranged so that the second pressure signal that the second pressure sensor assembly 26 records can represent the pressure state of the combustion gas after flowing through proportioning valve 18, so can represent the gas quantity of follow-up arrival burner 12 more accurately.Moreover whether control unit 20 can reach the second goal pressure signal according to this second pressure signal, the aperture of control ratio valve 18, realizing can the fired state of control combustion device 12 more accurately.
Be appreciated that the value of the second goal pressure signal can be arranged accordingly according to the position of measurement second pressure signal.
In one embodiment, described memory 28 stores the corresponding relation of the parameter preset of the first object pressure signal of described gas flow, the second goal pressure signal of described fuel gas pipeline 16 and described double-sensing combustion system 10, and described control unit 20 controls described stepless time adjustment blower fan 14 and/or described proportioning valve 18 according to described first pressure signal, described second pressure signal and described corresponding relation.
In the present embodiment, parameter preset can comprise the parameter relevant to the leaving water temperature of double-sensing combustion system 10.Concrete, be exemplified as thermic load, ion current signal value, set water temperature etc. that parameter preset can comprise double-sensing combustion system 10.
In the present embodiment, by storing the corresponding relation by the parameter preset of double-sensing combustion system 10 and first object pressure signal and the second goal pressure signal, make after double-sensing combustion system 10 starts to start work, just according to the parameter preset of current setting and described corresponding relation, first object pressure signal and the second goal pressure signal can be determined.Control unit 20 like this just can control the rotating speed of stepless time adjustment blower fan 14, is tending towards first object pressure signal to make the first pressure signal; Control unit can the aperture of control ratio valve 18, is tending towards the second goal pressure signal to make the second pressure signal.Certainly, control unit 20 can control stepless time adjustment blower fan 14 and proportioning valve 18 simultaneously, to make the first pressure signal be tending towards described first object pressure signal, is tending towards described second goal pressure signal to make described second pressure signal.
In one embodiment, double-sensing combustion system 10 can be blowing-type structure.Along the direction of the air current flow of described gas flow, described stepless time adjustment blower fan 14 is in the upstream of described burner 12.The air so entered from the air inlet of double-sensing combustion system 10, can first arrive stepless time adjustment blower fan 14, and the air-flow that then stepless time adjustment blower fan 14 blows out can enter provide air for burner 12 place fuel gas buring.Stepless time adjustment blower fan 14 can be arranged on the bottom in whole double-sensing combustion system 10, the air-flow that stepless time adjustment blower fan 14 like this blows out can towards the ionized motion of double-sensing combustion system 10.Certainly, double-sensing combustion system 10 also can be air-draft-type structure.Along the direction of the air current flow of described gas flow, described stepless time adjustment blower fan 14 is in the downstream of described burner 12.So, first the air entered from the air inlet of double-sensing combustion system 10 can arrive burner 12, and after flowing through heat exchanger 30, arrives stepless time adjustment blower fan 14.The wheel rotation of stepless time adjustment blower fan 14, can drive gas to flow, and to drive air to enter double-sensing combustion system 10 from air inlet, and flows out from exhaust opening.
In one embodiment, the first pressure signal that described first pressure sensor assembly detects is the pressure signal of the impeller upstream of described stepless time adjustment blower fan.
In the present embodiment, in stepless time adjustment blower fan 14 course of work, along the direction of air current flow, impeller upstream can form certain negative pressuren zone.The rotating speed of impeller is faster, and the air pressure of the negative pressuren zone of formation is relatively lower, and the pressure of this negative pressuren zone can, lower than the ambient pressure of double-sensing combustion system 10 place environment, make air enter in double-sensing combustion system 10 from air inlet.In some cases, when reverse blast occurs the working environment of double-sensing combustion system 10, can affect the rotating speed of impeller, the rotating speed of impeller may be made to decline, now the pressure of this negative pressuren zone can rise relatively.So visible, by detecting the pressure change of negative pressuren zone, the duty of stepless time adjustment blower fan 14 can be known.Moreover the pressure change of negative pressuren zone can affect the flow velocity of gas in gas flow, when there is the pressure increase of negative pressuren zone, gas flow rate can be caused to decline, make the fuel gas buring required air deficiency provided to burner.So, by detecting the first pressure signal of impeller upstream, when lower than first object pressure signal, control unit 20 can control stepless time adjustment blower fan 14 and improve rotating speed, and then make the first pressure signal be tending towards first object pressure signal, and then realization maintenance burner 12 works normally.
In one embodiment, described first pressure sensor assembly 22 has the first pipeline be communicated with the predetermined pressure measurement position, impeller downstream first of described stepless time adjustment blower fan 14 and the second pipeline be communicated with predetermined pressure measurement position, the impeller downstream second of described stepless time adjustment blower fan, and described first predetermined pressure measurement position is positioned at the upstream of described second predetermined pressure measurement position.
In the present embodiment, the impeller downstream of stepless time adjustment blower fan 14, along with the distance with stepless time adjustment blower fan 14 changes, the air pressure of gas also can change.The first predetermined pressure measurement position and the second predetermined pressure measurement position is preset with, with the current gas pressure making the first pressure sensor assembly 22 can gather multiple position in impeller downstream.In stepless time adjustment blower fan 14 course of work, the downstream of impeller can produce higher-pressure region, this higher-pressure region can higher than the ambient pressure of double-sensing combustion system 10 place environment, and the gas in the double-sensing combustion system 10 being can be discharged from exhaust opening from double-sensing combustion system 10 inside towards outside.Concrete, the first predetermined pressure measurement position and the second predetermined pressure measurement position can be positioned at the air outlet of stepless time adjustment blower fan 14, also can be positioned at smoke exhaust pipe 32, and can also be positioned at described air outlet in the first predetermined pressure measurement position, the second predetermined pressure measurement position is positioned at smoke exhaust pipe 32.Certainly, one of ordinary skill in the art present techniques marrow enlightenment under, can also according to actual design make other change, as long as but its realize function and effect and the application same or similar, all should be covered by the application's protection domain.
In the present embodiment, the first pressure sensor assembly 22 can have two pressure tap, and a pressure tap is communicated with the first predetermined pressure measurement position by the first pipeline, and another pressure tap is communicated with the second predetermined pressure measurement position by the second pipeline.
In the present embodiment, described first pressure sensor assembly 22 detects described first pipeline and obtains the 3rd pressure signal, detects described second pipeline and obtains the 4th pressure signal; Described first pressure sensor assembly 22 is the difference of described 3rd pressure signal and described 4th pressure signal to the first pressure signal that described control unit 20 exports.
In the present embodiment, changing along with the distance with stepless time adjustment blower fan 14 in gas flow, gas pressure also can corresponding existence change.According to Bernoulli equation in hydrodynamics, according to the pressure differential of 2 in gas flow, the flow determining air just can be calculated.This difference is fed back to control unit 20 as the first pressure signal, control unit 20 can be made according to the relation between the first pressure signal and first object pressure signal, the rotating speed of stepless time adjustment blower fan 14 can be controlled more accurately.To make the first pressure signal be tending towards first object pressure signal, so realize combustion gas can in the comparatively stable burning of burner 12, and double-sensing combustion system 10 can have comparatively stable leaving water temperature.
In one embodiment, described double-sensing combustion system 10 can also comprise the premix chamber 36 be communicated with described stepless time adjustment blower fan 14 with the port of export 34 of described burner 12, described fuel gas pipeline 16; The combustion gas of flowing out from described fuel gas pipeline 16 can arrive described burner 12 with the air that described gas flow provides after described premix chamber 36 mixes.
In the present embodiment, double-sensing combustion system 10 has premix chamber 36, makes after combustion gas and air can mix in premix chamber 36, to arrive burner 12 and burn.So, can make the flame of burner 12 can be relatively more stable.Moreover, by controlling the amount of combustion gas and air, the supply of the two can be made more reasonable.
Refer to Fig. 4.In one embodiment, described proportioning valve 18 has the first housing 38 and the second housing 40; Described first housing 38 is formed with fuel gas inlet 42 and gas outlet 44, and the spool 46 of described proportioning valve 18 is arranged on described gas outlet 44 place; The epithelium 48 of described proportioning valve 18 is arranged between described first housing 38 and the second housing 40, and described epithelium 48 is connected with the spool driving mechanism 50 of described proportioning valve 18; At least form confined space 52 by described second housing 40 and described epithelium 48.Described double-sensing combustion system 10 also comprises the 3rd pipeline 54 be communicated with described premix chamber 36 by described confined space 52.
In the present embodiment, confined space 52 can at least be formed by the second housing 40 and epithelium 48.Can there is joint portion between first housing 38 and the second housing 40, the marginal portion of epithelium 48 is positioned at described joint portion.Confined space 52 can be surrounded by the second housing 40 and epithelium 48.Certainly, confined space 52 also can be surrounded by the first housing 28, second housing 40 and epithelium 48 jointly.
In the present embodiment, the fuel gas inlet 42 of the first housing 38 all can be connected with fuel gas pipeline 16 with gas outlet 44, makes the inner flow passage of proportioning valve 18 become a part for fuel gas pipeline 16 runner.Moreover, by controlling the aperture between spool 46 and gas outlet 44, the gas flow of the port of export 34 of fuel gas pipeline 16 can be controlled, and then realize the gas flow controlling arrival burner.
In the present embodiment, spool driving mechanism 50 can drive spool 46 to move, to adjust aperture.Spool driving mechanism 50 is connected with epithelium 48.Because epithelium 48 has certain deformation space, make as spool driving mechanism 50 drives the movement of spool 46 to provide movable space.In spool driving mechanism 50 motion process, epithelium 48 can avoid combustion gas to arrive in confined space 52, to prevent gas leakage.Concrete, spool drives structure 50 can comprise power section and drive rod, and this drive rod is connected with spool 46 through after epithelium 48, and power section drives drive rod and then drives spool 46 to adjust aperture.Can also be, spool driving mechanism 50 comprises drive part and electromagnet, electromagnet is fixedly connected on epithelium 48, drive part upon power-up can and electromagnet between produce magnetic force, and then electromagnet can by magnetically-actuated have magnetic force spool 46 move adjustment aperture.
In the present embodiment, in double-sensing combustion system 10 course of work, may there is air current flow in the environment at its place.Such as, can there is wind in nature.Air current flow due to environment is unmanageable, makes double-sensing combustion system 10 may occur reverse blast.Namely in the air flow direction of environment and the gas flow of double-sensing combustion system 10, gas flow is contrary.Now, can the air pressure in double-sensing combustion system 10 be had an impact, moreover the air pressure change in gas flow, the aperture of meeting comparative example valve 18 forms impact.Proportioning valve 18 is by driving spool 46 to realize adjustment aperture, in some cases, when occurring that reverse pressure appears in gas flow, the power that proportioning valve 18 drives spool to open, reverse power can be subject to, the aperture of proportioning valve 18 may be diminished, so can have influence on the flow of combustion gas.In present embodiment, be communicated with by confined space 52 by the 3rd pipeline with premix chamber 36, make, when the pressure change of gas flow, such as to increase, the change of the pressure in premix chamber 36 can change with the pressure of confined space 52 and form certain interlock by the 3rd pipeline.Meeting comparative example valve 18 like this drive the power of spool 46 to form certain compensation, can arrive normal aperture to make spool 46.Concrete, be exemplified as when being subject to reverse blast, air pressure in gas flow increases, now the air pressure in premix chamber 36 increases, the air pressure of confined space 52 like this also increases thereupon, proportioning valve 18 like this be subject to drive spool 46 to open the pressure that reverse power can be subject to epithelium in confined space 48 to cancel out each other or partial offset, as the impact having this reduced reverse pressure comparison example valve 18 aperture.
In one embodiment, described second pressure sensor assembly 26 has the 4th pipeline 56 be communicated with the described port of export 34 upstream, and with the 5th pipeline 58 of the described port of export 34 communicating downstream.
In the present embodiment, the second pressure sensor assembly 26 can have two pressure tap, and a pressure tap is communicated with the port of export 34 upstream by the 4th pipeline 56, and another pressure tap is by the 5th pipeline 58 and the port of export 34 communicating downstream.
In the present embodiment, usually can there is pressure change in combustion gas after the port of export 34 flows out fuel gas pipeline 16.The gas pressure in the usual port of export 34 downstream is less than the gas pressure of the port of export 34 upstream.The gas flow of the port of export 34 downstream and double-sensing combustion system 10 converges, and combustion gas is flowed out from the port of export 34 and mixed with the air gas flow.So between the upstream and downstream of the port of export 34, a pressure differential can be there is.
In a concrete embodiment, described 4th pipeline 56 is connected between the described port of export 34 and described proportioning valve 18, and described 5th pipeline 58 is communicated with described premix chamber 36.Setting like this, can make the second pressure sensor assembly 26 can measure gaseous-pressure in fuel gas pipeline 16 comparatively accurately.Moreover the gas pressure in premix chamber 36 is stablized compared to the location comparison near the port of export 34, makes the gas pressure in premix chamber 36 can characterize the gas pressure in the port of export 34 downstream preferably.
In a concrete embodiment, described second pressure sensor assembly 26 detects described 4th pipeline 56 and obtains the 5th pressure signal, detects described 5th pipeline 58 and obtains the 6th pressure signal; Described second pressure sensor assembly 26 is the difference of described 5th pressure signal and described 6th pressure signal to the second pressure signal that described control unit exports.According to Bernoulli equation in hydrodynamics, the flow of combustion gas can be determined according to described difference.Make this difference can characterize pressure apparatus in fuel gas pipeline 16 comparatively accurately, with corresponding gas flow comparatively accurately.
In a concrete embodiment, described 3rd pipeline 54 is connected rear employing pipeline with described 5th pipeline 58 and is connected with described premix chamber 36.Setting like this, can make overall structure arrange simpler.Can be communicated with by a three-port structure between 3rd pipeline 54 and the 5th pipeline 58.
In one embodiment, described parameter preset comprises fired heat duty.In the present embodiment, fired heat duty can and the set water temperature of double-sensing combustion system 10 between there is certain corresponding relation, comprise fired heat duty by predefined parameter, make fired heat duty and establish corresponding relation between first object pressure signal and the second goal pressure signal.And then realize at the set water temperature of double-sensing combustion system 10 and establish corresponding relation between first object pressure signal and the second goal pressure signal.Corresponding relation can be linear function, quadratic function or more higher order functionality.
In a concrete embodiment, fired heat duty can be drawn by following formulae discovery.
Q
heat=(T
if-T
enter) * Q
stream
Wherein, Q
heatrepresent fired heat duty, T
ifrepresent set water temperature, T
enterrepresent the inflow temperature of double-sensing combustion system 10, Q
streamrepresent actual discharge.
From above-mentioned formula, between fired heat duty and set water temperature, there is certain corresponding relation.Moreover double-sensing combustion system 10 obtains heat by the burning of combustion gas, makes to there is certain corresponding relation between fired heat duty and gas quantity.
In a concrete embodiment, corresponding relation can comprise F=mP
n+ c, wherein F is fired heat duty, and P is the second goal pressure signal, and m tests the proportionality coefficient recorded, and c tests the constant recorded, and the value of n can carry out relative set according to actual product demand.
Present embodiment, fired heat duty is comprised by parameter preset, make in double-sensing combustion system 10, when starting working, just can according to set water temperature determination fired heat duty, and then according to fired heat duty determination first object pressure signal and the second goal pressure signal, control unit 20 can according to the first pressure signal and the second pressure signal respectively at the relation between first object pressure signal and the second goal pressure signal, control stepless time adjustment blower fan 14 and proportioning valve 18 works.So, double-sensing combustion system 10 can be supplied to the hot water reaching set water temperature fast, brings facility to user.
In a concrete embodiment, described corresponding relation comprises target combustion thermic load and the set water temperature corresponding with it.When the target heat load value corresponding with current set water temperature in the fired heat duty that described burner 12 produces does not conform to, described control unit 20 controls described proportioning valve 18 aperture, arrives described target heat load value to described thermic load value.
In the present embodiment, the functional relation between the fired heat duty of above-mentioned formula sign and set water temperature can be included in corresponding relation.Or also data can draw the tables of data of the relation between target combustion thermic load and set water temperature by experiment, this tables of data is stored in described memory 28 as corresponding relation.
In the present embodiment, when the fired heat duty that burner 12 produces is lower than target combustion thermic load, by the aperture of scaling up valve 18, fuel gas supply can be increased and then promotes fired heat duty to target combustion thermic load.When the fired heat duty that burner 12 produces is higher than target combustion thermic load, by reducing the aperture of proportioning valve 18, fuel gas supply can be reduced and then reduces fired heat duty to target combustion thermic load.So, can realize according to the relation between the fired heat duty of burner 12 and target combustion thermic load, the aperture of control ratio valve 18, and then control in the course of work of whole double-sensing combustion system 10.Be appreciated that in the aperture process of control unit 20 control ratio valve 18, also can in conjunction with the rotating speed controlling stepless time adjustment blower fan 14.
In a concrete embodiment, when the second pressure signal that described second pressure sensor assembly 26 detects is lower than the second goal pressure signal that described target heat load value is corresponding, described control unit 20 controls described proportioning valve 18 and increases aperture, and the fired heat duty value sensed extremely arrives described target heat load value.
In the present embodiment, when the second pressure signal is lower than the second goal pressure signal value that target combustion thermic load is corresponding, can represent that current fired heat duty is lower than target combustion thermic load, now need to increase current fired heat duty.Control unit 20 can increase aperture by control ratio valve 18, increases the supply of combustion gas, to increase the fired heat duty of burner 12.When fired heat duty arrives target combustion thermic load, current proportioning valve 18 aperture can be maintained.So can realize double-sensing combustion system 10 and can be provided to the hot water reaching set water temperature.
See also Fig. 1 and Fig. 2.In one embodiment, described burner 12 is provided with the inductive needle 15 of the ion current signal value in flame detection combustion process; The output of described inductive needle 15 is connected with described control unit 20; Described parameter preset comprises object ion current signal value.
In the present embodiment, burner 12 can be provided with inductive needle 15, to respond to the ion current signal in flame combustion process.And then the power of ion current signal that can will sense, as a part for the control foundation of control unit 20 pairs of stepless time adjustment blower fans 14 and proportioning valve 18.
In the present embodiment, the output of inductive needle 15 is connected with control unit 20, makes control unit 20 can accept the ion current signal of inductive needle 15 generation, and then can draw ion current signal value according to certain algorithm.Compared by the ion current signal value of Offered target ion current signal value and current reception in parameter preset, control unit 20 just can control stepless time adjustment blower fan 14 and/or proportioning valve 18 according to corresponding relation further.Corresponding relation is there is between object ion current signal value and the second goal pressure.Namely the size of gas current that inductive needle 15 senses is subject to the impact of gas quantity, and the combustion gas of namely burning is more, and the gas current of generation is stronger, and corresponding ionic current values is larger.The combustion gas of burning is fewer, and the gas current of generation is more weak, and corresponding ionic current values is less.And between gas quantity and the second goal pressure signal, there is corresponding relation, make to there is corresponding relation between ionic current values and the second goal pressure signal value.This corresponding relation can be functional relation, also can be the data value of the correspondence obtained by experiment, and carry out record by tables of data.
In one embodiment, described burner 12 comprises combustion zone and detection zone, and the flame of described combustion zone is more stable than the flame of described detection zone, and described inductive needle 15 is arranged at the top of described burner 12 detection zone.
In the present embodiment, respond to gas current for the ease of inductive needle 15, detection zone can be set on burner 12.Detection zone can by fire hole design etc., and make the flame of detection zone compared to the flame of burner 12 other parts, stability is poorer, easier from flame, faster more obvious to the proportioning response fluctuation of combustion gas and air.So make the ion current signal value detected comparatively fast, and the supply status of combustion gas and air can be reacted accurately.
In one embodiment, described corresponding relation can comprise the object ion current signal value corresponding to described second goal pressure signal; Described first object pressure signal is arrived at described first pressure signal, described second pressure signal arrives described second goal pressure signal, when the described ion current signal value detected still is less than described object ion current signal value, described control unit 20 controls described stepless time adjustment blower fan 14 and reduces rotating speed, when reaching described object ion electric current to described gas current, described control unit 20 upgrades the corresponding relation in described memory 28 according to current described first pressure signal and described second pressure signal.
In the present embodiment, first object pressure signal and the second goal pressure signal can according under normal circumstances, in combustion gas, effective content is determined, the benchmark that such as first object pressure signal and the second goal pressure signal are determined is that in combustion gas, effective content is 100%.In some cases, the real work occasion of double-sensing combustion system 10, the effective content in its combustion gas may a little less than first object pressure signal and combustion gas effective content benchmark corresponding to the second pressure signal.The combustion gas effective content of such as real work occasion is 95%.Now the first pressure signal reaches first object pressure signal, and when the second pressure signal reaches the second goal pressure signal, there will be the gas current detected and be still less than object ion electric current.Now can by reducing the mode of stepless time adjustment blower fan 14 rotating speed, the air capacity be mixed into when reducing fuel gas buring, finds so to make ionic current values have certain rising through experiment.If now ionic current values rises to object ion current signal value, show that the gas condition of the first current pressure signal and the second pressure signal and double-sensing combustion system 10 workplace adapts.Now can according to the corresponding relation stored in the corresponding relation between the first pressure signal and the second pressure signal more new memory 28.
See also Fig. 1, Fig. 2 and Fig. 3.In a concrete embodiment, the corresponding relation between first object pressure signal and the second goal pressure signal can be Y=KX+B.First object pressure signal is arrived at the first pressure signal, when second pressure signal arrives the second goal pressure signal, ionic current values is less than object ion current signal value, now control unit 20 controls stepless time adjustment blower fan 14 and reduces rotating speed, first pressure signal like this can reduce, and the first pressure signal is constant.In this process when the first pressure signal is in a certain value, ionic current values rises to object ion current signal value, now according to the corresponding relation of the corresponding relation Y=KX+B ' of the first current pressure signal and the second pressure signal more the first object pressure signal that stores of new memory 28 and the second goal pressure signal.Wherein, K value can be maintained and do not change, and the value changing constant B is B '.So achieve, double-sensing combustion system 10 can have certain function automatically adapting to the combustion gas quality of workplace, for user provides convenience.
In one embodiment, described corresponding relation comprises object ion current signal value and the set water temperature corresponding with it; When the ion current signal value that described inductive needle 15 detects is less than object ion current signal value corresponding to current set water temperature, described control unit 20 controls the rotating speed of described stepless time adjustment blower fan 14, makes the first object pressure signal that described first pressure signal is tending towards corresponding with described object ion current signal value; And/or described control unit 20 controls the aperture of described proportioning valve 18, make the second goal pressure signal that described second pressure signal is tending towards corresponding with described object ion electric current.
In the present embodiment, by by corresponding with set water temperature for object ion current signal value, make control unit 20 can according to current set water temperature determination object ion current signal value, using the foundation of the corresponding relation of first object pressure signal and the second goal pressure signal as adjustment stepless time adjustment blower fan 14 and proportioning valve 18.
In a concrete embodiment, after double-sensing combustion system 10 startup work, determine the object ion current value that set water temperature is corresponding, control unit 20 increases speed according to the corresponding relation control stepless time adjustment blower fan 14 of first object pressure signal and the second goal pressure signal, and/or the aperture of control ratio valve 18.When ion current signal value reaches described target example current signal value, control unit 20 can control stepless time adjustment blower fan 14 rotating speed and maintain the first pressure signal, and the aperture of control ratio valve 18 maintains the second pressure signal.
In one embodiment, described first object pressure signal is arrived at described first pressure signal, described second pressure signal arrives described second goal pressure signal, when the described ion current signal value detected still is less than described object ion current signal value, described control unit 20 controls described stepless time adjustment blower fan 14 and increases speed, the described proportioning valve 18 of corresponding control increases aperture, the ion current signal value detected extremely arrives described object ion current signal value, described control unit 20 upgrades the corresponding relation in described memory 28 according to current described first pressure signal and described second pressure signal.
In the present embodiment, arrive described first object pressure signal at described first pressure signal, described second pressure signal arrives described second goal pressure signal, but described in the ion current signal value that detects when being still less than described object ion current signal value.Can represent that the combustion gas effective content of the workplace of double-sensing combustion system 10 is lower than the benchmark arranging first object pressure signal and the second goal pressure signal.Control unit 20 is according to the corresponding relation of first object pressure signal and the second goal pressure signal, and control stepless time adjustment blower fan 14 and increase speed, control ratio valve 18 increases aperture.The combustion gas of burner 12 of increase like this and the supply of control, to improve the ion current signal value of burner 12.When the ion current signal value detected arrives object ion current value, represent the first current pressure signal and there is corresponding relation between the second pressure signal and object ion current value, so the corresponding relation more stored in new memory 28, so realizes the gas condition that double-sensing combustion system 10 can adapt to workplace automatically.
The technical scheme provided from above the application's embodiment, by the second pressure sensor assembly of the first pressure sensor assembly and fuel gas pipeline that arrange stepless time adjustment blower fan, the gaseous-pressure state of double-sensing combustion system for workplace can be realized, comparative example valve and stepless speed regulating blower fan control, to adapt to the gaseous-pressure of workplace.When controlling, selectively control at least one in stepless time adjustment blower fan or proportioning valve, to meet double-sensing combustion system in the course of the work to the demand of heat energy.And then, make this double-sensing combustion system for different working environments, the pressure of gas pipeline can be comprised, and the blast etc. in the external world, preferably can control to coordinate proportioning valve and stepless time adjustment blower fan, realize the work that combustion gas thermal can be stable.Moreover by mating first object pressure signal and the second pressure signal, realize comparatively accurately ensureing actual air mass flow and gas flow ratio optimization, thus make fuel gas buring comparatively abundant, the pollutant of discharge can be very low.
Be appreciated that the multiple embodiments in present specification can describe for progressive relationship, each embodiment is focused on describing the content different from other embodiment.Same term between different embodiment can cross-referencedly be explained.Moreover one of ordinary skill in the art, without the need to creative work, just know and can combine mutually between the embodiment in present specification.
Although depict the application by embodiment; under the enlightenment of present techniques marrow; those skilled in the art may combine between above-mentioned multiple embodiment; also can change the embodiment of the application; as long as but its realize function and effect and the application same or similar, all should be covered by the protection domain of the application.
Claims (16)
1. a double-sensing combustion system, is characterized in that, has the gas flow from air inlet to exhaust opening in described double-sensing combustion system, and described double-sensing combustion system comprises:
Burner;
For described burner provides the stepless time adjustment blower fan of air;
The fuel gas pipeline be communicated with described burner;
Be arranged on the proportioning valve on described fuel gas pipeline;
The control unit be electrically connected with described stepless time adjustment blower fan and described proportioning valve;
Detect the first pressure sensor assembly of the first pressure signal of described gas flow;
Detect the second pressure sensor assembly of the second pressure signal of described fuel gas pipeline;
Memory;
The control unit be electrically connected with the signal output part of the signal output part of described memory, described first pressure sensor assembly, described second pressure sensor assembly, described stepless time adjustment blower fan and described proportioning valve.
2. double-sensing combustion system according to claim 1, is characterized in that: described fuel gas pipeline and gas pipeline have connecting portion, and described gas pipeline is described fuel gas pipeline supply combustion gas; Described second pressure signal is the pressure signal between the port of export of described fuel gas pipeline and described connecting portion.
3. double-sensing combustion system according to claim 2, is characterized in that: described proportioning valve is between described connecting portion and the described port of export, and described second pressure signal is the pressure signal between described proportioning valve and the described port of export.
4. double-sensing combustion system according to claim 1, it is characterized in that: along the direction of the air current flow of described gas flow, described stepless time adjustment blower fan is in the upstream of described burner.
5. double-sensing combustion system according to claim 1, it is characterized in that: along the direction of the air current flow of described gas flow, described stepless time adjustment blower fan is in the downstream of described burner.
6. the double-sensing combustion system according to claim 4 or 5, is characterized in that: the first pressure signal that described first pressure sensor assembly detects is the pressure signal of the impeller upstream of described stepless time adjustment blower fan.
7. the double-sensing combustion system according to claim 4 or 5, it is characterized in that: described first pressure sensor assembly has the first pipeline be communicated with the predetermined pressure measurement position, impeller downstream first of described stepless time adjustment blower fan and the second pipeline be communicated with predetermined pressure measurement position, the impeller downstream second of described stepless time adjustment blower fan, and described first predetermined pressure measurement position is positioned at the upstream of described second predetermined pressure measurement position.
8. double-sensing combustion system according to claim 7, is characterized in that, described first pressure sensor assembly detects described first pipeline and obtains the 3rd pressure signal, detects described second pipeline and obtains the 4th pressure signal; Described first pressure sensor assembly is the difference of described 3rd pressure signal and described 4th pressure signal to the first pressure signal that described control unit exports.
9. double-sensing combustion system according to claim 1, is characterized in that: described double-sensing combustion system also comprises the premix chamber be communicated with described stepless time adjustment blower fan with the port of export of described burner, described fuel gas pipeline; The combustion gas of flowing out from described fuel gas pipeline can arrive described burner with the air that described gas flow provides after described premix chamber mixes.
10. double-sensing combustion system according to claim 9, is characterized in that: described proportioning valve has the first housing and the second housing; Described first housing is formed with fuel gas inlet and gas outlet, and the spool of described proportioning valve is arranged on described gas outlet; The epithelium of described proportioning valve is arranged between described first housing and the second housing, and described epithelium is connected with the spool driving mechanism of described proportioning valve; At least form confined space by described second housing and described epithelium;
Described double-sensing combustion system also comprises the 3rd pipeline be communicated with described premix chamber by described confined space.
11. double-sensing combustion systems according to claim 10, it is characterized in that, described second pressure sensor assembly has the 4th pipeline be communicated with the port of export upstream of described fuel gas pipeline, and the 5th pipeline of port of export communicating downstream with described fuel gas pipeline.
12. double-sensing combustion systems according to claim 11, is characterized in that, described 4th pipeline is connected between the described port of export and described proportioning valve, and described 5th pipeline is communicated with described premix chamber.
13. double-sensing combustion systems according to claim 12, is characterized in that, described second pressure sensor assembly detects described 4th pipeline and obtains the 5th pressure signal, detects described 5th pipeline and obtains the 6th pressure signal; Described second pressure sensor assembly is the difference of described 5th pressure signal and described 6th pressure signal to the second pressure signal that described control unit exports.
14. double-sensing combustion systems according to claim 13, is characterized in that, adopt a pipeline to be connected with described premix chamber after described 3rd pipeline is connected with described 5th pipeline.
15. double-sensing combustion systems according to claim 1, is characterized in that, described burner are provided with the inductive needle of the ion current signal value in flame detection combustion process; The output of described inductive needle is connected with described control unit.
16. double-sensing combustion systems according to claim 15, it is characterized in that, described burner comprises combustion zone and detection zone, and the flame of described combustion zone is more stable than the flame of described detection zone, and described inductive needle is arranged at the top of described burner detection zone.
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| CN201520739589.7U CN204923478U (en) | 2015-09-22 | 2015-09-22 | Two sensing combustion system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642711A (en) * | 2015-09-22 | 2017-05-10 | 艾欧史密斯(中国)热水器有限公司 | Dual-sensing combustion system |
| WO2018040166A1 (en) * | 2016-08-31 | 2018-03-08 | 中山市卡洛力热能科技有限公司 | Self-adjustable premixed gas heating system and control method therefor |
| CN112128988A (en) * | 2020-08-31 | 2020-12-25 | 华帝股份有限公司 | High-air-pressure identification control method for water heater and water heater |
-
2015
- 2015-09-22 CN CN201520739589.7U patent/CN204923478U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642711A (en) * | 2015-09-22 | 2017-05-10 | 艾欧史密斯(中国)热水器有限公司 | Dual-sensing combustion system |
| WO2018040166A1 (en) * | 2016-08-31 | 2018-03-08 | 中山市卡洛力热能科技有限公司 | Self-adjustable premixed gas heating system and control method therefor |
| CN112128988A (en) * | 2020-08-31 | 2020-12-25 | 华帝股份有限公司 | High-air-pressure identification control method for water heater and water heater |
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