CN104566380A - Gas mixing block - Google Patents

Gas mixing block Download PDF

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Publication number
CN104566380A
CN104566380A CN201410569495.XA CN201410569495A CN104566380A CN 104566380 A CN104566380 A CN 104566380A CN 201410569495 A CN201410569495 A CN 201410569495A CN 104566380 A CN104566380 A CN 104566380A
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CN
China
Prior art keywords
mixed block
mixed
fuel gas
gas
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410569495.XA
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Chinese (zh)
Inventor
E·韦里埃德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solaronics SA
Solaronics Inc
Original Assignee
Solaronics Inc
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Filing date
Publication date
Application filed by Solaronics Inc filed Critical Solaronics Inc
Publication of CN104566380A publication Critical patent/CN104566380A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/12—Radiant burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/725—Protection against flame failure by using flame detection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M11/00—Safety arrangements
    • F23M11/04—Means for supervising combustion, e.g. windows
    • F23M11/045—Means for supervising combustion, e.g. windows by observing the flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
    • F23N5/126—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q3/00—Igniters using electrically-produced sparks
    • F23Q3/006—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/002—Radiant burner mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2204/00—Burners adapted for simultaneous or alternative combustion having more than one fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2208/00—Control devices associated with burners
    • F23D2208/10—Sensing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2900/00—Special features of, or arrangements for fuel supplies
    • F23K2900/05002—Valves for gaseous fuel supply lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/16—Flame sensors using two or more of the same types of flame sensor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/06—Fail safe for flame failures
    • F23N2231/08—Fail safe for flame failures for pilot flame failures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2237/00—Controlling
    • F23N2237/08—Controlling two or more different types of fuel simultaneously

Abstract

A mixing block (380) is disclosed for preparing a premix of combustible gas and air to be supplied to a flame detection electrode (382) or to an ignition electrode. The mixing block comprises: - an outlet channel (384) for guiding a premix of combustible gas and air out of the mixing block, - at least one inlet (384) for supplying air into the mixing block, - at least two connections (388, 389) to connect different supplies of combustible gas to the mixing block, - channels (392, 393) inside the mixing block to guide combustible gas from each of the at least two connections (388, 389). The at least two connections (388, 389) are connectable via these channels (392, 393) towards the outlet channel (384) in the mixing block, - a switch (396) for selecting from which of the at least two connections (388, 389) a flow connection is realized to the outlet channel (384). The gas / air mixture supplying tubes of the detection electrodes (382), downstream the outlet channel (384), are to be placed proximate an infrared radiation burner, from which the flame can propagate to the tube exits, thereby igniting the fuel/air mixture leaving them. These flames are to be recognised then for the ionisation current through the flame detection electrodes (382).

Description

Gas and vapor permeation block
Technical field
The present invention relates to for ignitor and the gas and vapor permeation block (gas mixing block) for flame detection electrode, these ignitors and flame detection electrode are used for gas burner system.The present invention more clearly relates to the field of infra-red radiation gas burner system, and described infra-red radiation gas burner system such as uses in the infra-red drying of lamellar material (coating as on paper, plate or sheet metal).In such radiation gas burner system, use ignitor and flame detection electrode.The present invention relates to such electrode, these electrodes carry out work by the supply of premixed gas, and this premixed gas uses gas and vapor permeation block and is pre-mixed.
The invention still further relates to ignitor, relate to flame detection electrode, and relate to the method using electrode in gas combustion infra-red drying or aging system (curing system), such as, in these continuous systems.
Background technology
In infra-red radiation gas burner system, electrode is used for detecting the existence of gas by gas burner burns.The electrode of common type comprises supplies for gas (it be fuel gas and air be pre-mixed thing) and two electric conductors of supply source form in a tubular form in the electrodes.The thing that is pre-mixed of fuel gas and air is prepared in mixed block.Flame detection electrode is positioned adjacent to infrared-gas burner.If burning of gas occurs in infra-red radiation gas burner place, then flame exists at infra-red radiation gas burner place.Via contact transmission, flame will be produced in the gas being supplied to flame detection electrode.Flame by close at electrode two electric conductors between circuit.Generation current-ionization current.The existence of ionization current represents the existence in the burning of gas burner place, and not existing of electric current represents to there is not burning at gas burner place.Electrode be used as safety device: if flame does not exist at gas burner place, then electrode detection its, and be cut to gas burner gas supply.Flame detection electrode supplies continuously during the operation of radiation gas burner premixed gas, has the continuous monitoring of the existence of the burning on radiation gas burner when being supplied to radiation gas burner with convenient fuel gas.
Ignitor-for being pre-mixed the electrode of object point fire-can be similar to flame detection electrode to the gas being supplied to infra-red radiation gas burner.Gas mixes with air in mixed block, and will be pre-mixed thing and sent by pipe.Voltage is applied between two electric conductors, thus produces spark, the gas between this spark ignition two electric conductors.The flame of ignitor lights the infra-red radiation gas burner be arranged near it via contact transmission.Detection infra-red radiation gas burner is lighted by flame detection electrode, and will cut off to the premixed gas supply of ignitor.
Due to obviously, common way is, by be supplied to light a fire with or the identical fuel gas of flame detection electrode be supplied to infra-red radiation gas burner.Due to security reason, the thing that is pre-mixed of fuel gas and air is made near being pre-mixed the place that thing will burn.This means, flame detection electrode and/or ignitor are pre-mixed unit by another different from infra-red radiation gas burner (and separation) or mixed block supplies.Be pre-mixed in unit, fuel gas is entered and air supply by injector under a certain pressure, and by fuel gas and air mixing.In order to the persistence of operating efficiency and electrode, being pre-mixed parameter must correctly and arrange closely to control.
Exist for dissimilar fuel gas (such as natural gas, for propane, for butane ...) exercisable infra-red radiation gas burner system.So a kind of mode accommodation is pressed to the gas supply system of such infra-red radiation gas burner system supply, thus the setting of the only change (other gas is fed into supply pipeline) of gas supply and suitable gas pressure and air supply pressure is enough to obtain correct being pre-mixed.But this means can not suitably work for the gas supply to flame detection electrode and ignitor.The unit that is pre-mixed of each of the flame detection electrode of infra-red radiation gas burner system or ignitor must phase coadaptation and adjustment, the setting of the replacing of the replacing of such as injector and adjustment, barrier film and adjustment, gas and/air pressure.Can disperse over their surface due to infra-red radiation gas burner system and comprise a large amount of igniting and flame detection electrode (the separative mixed block of each tool), so such accommodation is consuming time and high cost.Adjustment must be undertaken by exact way.Due to vulnerability (the particularly vulnerability of flame detection electrode of electrode, because these electrodes during the operation of infra-red radiation gas burner in continued operation), when changing gas supply, the incorrect adaptation of flame detection electrode causes the service life reduction of flame detection electrode.
Summary of the invention
The object of this invention is to provide a kind of mixed block reliably, this reliable mixed block is used for using in the ignitor in infra-red radiation gas burner and in flame detection electrode, and different types of fuel gas can be utilized to operate.
Other object is to provide that a kind of this mixed block can easily be changed for ignitor and the mixed block for flame detection electrode, to utilize dissimilar fuel gas operation.
A first aspect of the present invention is a kind of mixed block being pre-mixed thing being used for preparing fuel gas and air, and this is pre-mixed thing and will be supplied to flame detection electrode or be supplied to ignitor.Mixed block comprises:
-exit passageway, is used for the thing that is pre-mixed of fuel gas and air to be directed to outside mixed block,
-at least one import, is used for supplying air in mixed block,
-at least two connectors, are used for different fuel gas supply sources to be connected to mixed block,
-passage, inner in mixed block, be used for guiding the fuel gas of each from described at least two connectors, wherein, described at least two connectors are attachable via described passage towards the exit passageway in mixed block.
In mixed block, provide switch, this switch is used for selecting realizing being communicated with for the flowing of the exit passageway mixed block from which of described at least two connectors.
The benefit of mixed block of the present invention is, can carry out from by with the fuel gas of a type in the electrodes fuel gas easy, fast and change reliably to another kind of type.By activating switch, carry out the conversion of fuel gas connection.The present invention is allowed for whole correlated parts of each of at least two kinds of fuel gas or equipment (such as, for installation and the setting of the suitable injector of often kind of gas type) can be made, such as, in advance when installation system.Because conversion can be undertaken by reliable fashion, so it is unsuitable for avoiding setting, setting is the unsuitable comparatively short life causing electrode.
In a preferred embodiment, switch is included in the flow channel of switch inside.By being actuated at the switch in mixed block, the flow channel in switch is positioned between one of at least two connectors and exit passageway and forms air flow communication.Switch is such as installed in rotation in mixed block, thus by the rotation of switch, the flow channel in switch is positioned between one of at least two connectors and exit passageway and forms air flow communication.
In a preferred embodiment, when mixed block in use time, at combustible gas stream by after switch, what in mixed block, form fuel gas and air is pre-mixed thing.In this embodiment, it is possible that mixed block to be only equipped with an air intlet, thus obtain the more simple structure of mixed block.
In a further advantageous embodiment, when mixed block in use time, at combustible gas stream by before switch, what in mixed block, form fuel gas and air is pre-mixed thing.In this embodiment, it is recommended that mixed block to be equipped with the independent air intlet of each for fuel gas supply company fitting.This allows by air intlet (such as, the suitable barrier film of air intlet) be limited to fuel gas supply company fitting best, so that the best that air intlet parameter (pressure, flow) and the fuel gas of fuel gas supply source supply parameter (pressure, flow) is corresponding, described air intlet coordinates with this fuel gas supply source.
In a preferred embodiment, switch can manually operate.
In a preferred embodiment, switch can operate via control system.
In a preferred embodiment, the device of the pressure at least one (preferably for fuel gas supply source each) and/or air supply source arranging fuel gas supply source is provided with.
In a preferred embodiment, be provided with for air supply source is set and/or the device of flow of at least one (preferably for fuel gas supply source each) of fuel gas supply source, what described air supply source was used for being formed fuel gas and air is pre-mixed thing.
In a preferred embodiment, at each injector be provided with for different fuel gas type of at least two connectors at mixed block place, such as one for natural gas, one for propane.
Preferably, mixed block comprises the air intlet with the number of combustible gas inlet connector.Each of air intlet can be provided with suitable part for fuel gas type and/or suitable equipment, they can to this fuel gas type air supply, such as, air intlet can be provided with suitable barrier film, thus correct air stream will be supplied for the gas flow of fuel gas type, air intlet coordinates with this fuel gas type.Can select in embodiment, mixed block comprises an air intlet, preferably an only air intlet.
A second aspect of the present invention is a kind of flame detection electrode be used in infra-red radiation gas burner system, and this flame detection electrode comprises:
-mixed block as in a first aspect of the present invention;
-pipe, what supply for fuel gas and air is pre-mixed thing, is in being communicated with the flowing of the exit passageway of mixed block; Wherein, when flame detection electrode in use time, by the exit operating in pipe of infra-red radiation gas burner can ignited flammable gas and air be pre-mixed thing;
-two electric conductors, they can be electrically connected by means of the ionization current of flame, when light by pipe be pre-mixed logistics time this flame produce, the electric current that this two electric conductors produce by means of electric conductor, for detecting the proper operation of infra-red radiation gas burner.
In preferred flame detection electrode, one of two electric conductors are positioned at the inside of pipe, and the second electric conductor is a part for pipe or pipe, or are connected to pipe.
Preferably two flame detection electrodes supply in parallel and are pre-mixed thing from exit passageway, thus cause more reliable flame detector system.
A third aspect of the present invention is a kind of ignitor be used in infra-red radiation gas burner system, and this ignitor comprises:
-mixed block as in a first aspect of the present invention;
-pipe, is pre-mixed thing for fuel gas and air supply, in the exit passageway of mixed block is in and flows and be communicated with;
-two electric conductors, voltage can be applied on two electric conductors, is used for producing spark through voltage, and that lights the fuel gas that flows through pipe and air thus is pre-mixed thing.
A fourth aspect of the present invention is gas combustion infrared transmitter system, these gas combustion infrared transmitter systems comprise one or more flame detection electrodes of the mixed block with a first aspect of the present invention, and/or comprise one or more ignitors of the mixed block with a first aspect of the present invention.
In example system, system is equipped with fan and air duct, and for proceeding to the air supply of mixed block via at least one import, this at least one import is used for supplying air in described mixed block.
In example system, the first connector of mixed block is connected to the supply source of the fuel gas of the first kind; And the second connector of mixed block is connected to the supply source of the fuel gas of Second Type.
A fifth aspect of the present invention is a kind of method being used for changing fuel gas supply in mixed block, wherein, use the mixed block as in a first aspect of the present invention, and wherein, activate switch, to select fuel gas to supply between at least two connectors at mixed block place.Preferably carry out the conversion of fuel gas, and the setting do not revised except the actuating of switch in mixed block and do not change the part in mixed block.
A sixth aspect of the present invention is the method for the gas combustion infrared transmitter system of a kind of operation as in a fourth aspect of the present invention, wherein, the gas combustion infrared transmitter of gas combustion infrared transmitter system can operate the fuel gas of two kinds or more type.When by the operation of gas combustion infrared transmitter from a kind of type conversion to the fuel gas of another kind of type time, activate the switch of mixed block, the fuel gas supply of the mixed block of electrode is led to conversion, so that the operation of gas combustion infrared transmitter and electrode, the fuel gas of described electrode pair type identical with gas combustion infrared transmitter operates.Preferably carry out the conversion of fuel gas, and except the actuating of switch, do not need the setting that is modified in mixed block, and do not need to change the part in mixed block.In the exemplary embodiment, gas combustion infrared transmitter system is provided in continuous drying or curing equipment, such as, for the continuous process of web-like materials (as paper, plate or metal strap).
Accompanying drawing explanation
Fig. 1 and 2 shows electrode, and this electrode can be used as detecting electrode in the present invention, or is used as ignitor.
Fig. 3 and 4 shows the schematic diagram of the embodiment of electrode system, and these electrode systems comprise the mixed block as in a first aspect of the present invention.
Detailed description of the invention
Fig. 1 shows available flame detection electrode in the present invention.Housing 110 comprises electrode 120.Electrode 120 comprises pipe 130, and what supply fuel gas (such as, natural gas, such as propane gas) and air by this pipe 130 is pre-mixed thing.Pipe 130 can be made up of conductive material, such as, be made up of inconel, or pipe 130 can have banded section in the inside of pipe 130, and this banded section is made up of conductive material.(such as, inconel) electric conductor 140 is placed on the inside of pipe 130, by distance piece 150 and pipe electric insulation.Fig. 2 shows the electrode 120 when pipe is taken away, to illustrate electric conductor 140 and distance piece 150.Electric conductor 140 and pipe 130-the latter not shown on Fig. 2-be arranged on holder 160.Premixed gas will be supplied to into and flow through pipe (it is not shown in fig. 2).Distance piece 150 has opening, and these openings allow premixed gas to flow through pipe.When flowing through the premixed gas of pipe 130 by (using flame detection electrode at this gas combustion infrared transmitter) during the flame ignition transmitted from gas combustion infrared transmitter, the existence of the flame in the end of pipe 130 forms electrical contact between pipe 130 and electric conductor 140.The existence of the electric current (ionization current) flowed by this electrical contact is detected as the evidence of burning existence.
In a similar manner, the electrode of Fig. 1 and 2 can be used as ignitor.When fuel gas be pre-mixed thing supplied by pipe 130 time, the voltage applied between two electric conductors can produce spark, and this spark ignition is by the premixed gas stream of pipe.
Fig. 3 shows electrode system 300, and this electrode system 300 is included in mixed block 380 such in a first aspect of the present invention.What mixed block 380 was used for preparing the fuel gas waiting to be fed into one or more electrode 382 and air is pre-mixed thing.Electrode can be flame detection electrode or ignitor, such as, have the type described in fig 1 and 2.Fig. 3 shows two electrodes in parallel, and these two electrodes are supplied by same mixed block 380.Such one structure is useful especially for flame control electrode, because it allows to detect under one of two flame detection electrodes are defective situation to remain possibility.
Mixed block 380 comprises:
-exit passageway 384, is used for the thing that is pre-mixed of fuel gas and air to be directed to outside mixed block,
-two imports 386, are used for supplying air in mixed block,
-two connectors 388,389, are used for different fuel gas supply sources to be connected to mixed block.A connector can such as be connected to natural gas supply source, and the second connector such as can be connected to propane supply source or butane supply source.
-passage 392,393, inner in mixed block, be used for guiding the fuel gas from two connectors 388,389.
Two connectors 388,389 are attachable via the passage 392,393 for two connectors towards the exit passageway 384 in mixed block 380.
Mixed block 380 also comprises switch 396.Switch 396 allows to select to realize being communicated with for the flowing of the exit passageway 384 of mixed block 380 from which of at least two connectors 388,389.
Switch 396 shown in Figure 3 is included in the flow channel 397 of switch 396 inside.Switch 396 activated by rotating it, and by this switch 396, the flow channel 397 in switch 380 can be positioned between one of at least two connectors 388,389 and exit passageway 384 and form air flow communication.In figure 3, switch 396 is in such as upper/lower positions: be communicated with being formed between the flow channel 397 leading to exit passageway 394 to flow at the fuel gas supply company fitting 389 via passage 393.
In the mixed block 380 of Fig. 3, at combustible gas stream by before switch 396, what in mixed block 380, form fuel gas and air is pre-mixed thing.
The mixed block that wherein manually can operate switch can be provided.Also possible that, the mixed block that wherein switch can operate via control system is provided.
The device 387 of pressure for arranging air supply source and/or flow can be provided with.Such device can be such as barrier film; Or by means of needle-like piece (see 387 in figure 3).
The device 390 of pressure for arranging fuel gas supply source and/or flow can be provided with.Such device can be such as injector 390.The injector of each for the connector 388,389 of fuel gas supply source can be advantageously selected to and be suitable for specific gas supply source.
Fig. 4 shows electrode system 400, and this electrode system 400 is included in mixed block 480 such in a first aspect of the present invention.Reference numeral identical with Reference numeral in figure 3 in the diagram has and equivalent in figure 3.Contrary with the electrode system of Fig. 3, the mixed block 480 in electrode system 400 in the diagram only has an import 486, to supply air in mixed block.At combustible gas stream by after switch 396, what in mixed block 480, form fuel gas and air is pre-mixed thing.In the diagram, switch 396 is in such as upper/lower positions: be communicated with being formed to flow between the flow channel 397 leading to exit passageway 394 in switch 396 inside at the fuel gas supply company fitting 388 via passage 392.
The electrode system 300,400 illustrated in figures 3 and 4 can such as be used in gas combustion infrared transmitter system.

Claims (15)

1. mixed block (380,480), what described mixed block was used for preparing flame detection electrode to be fed into or was supplied to the fuel gas of ignitor and air is pre-mixed thing, and this mixed block comprises:
-exit passageway (384), this exit passageway is used for being directed to outside described mixed block by being pre-mixed thing described in fuel gas and air,
-at least one import (386,486), this at least one import is used for supplying air in described mixed block,
Wherein, described mixed block comprises:
-at least two connectors (388,389), described at least two connectors are used for different fuel gas supply sources to be connected to described mixed block, and
-passage (392,393), described passage is inner in mixed block, to guide the fuel gas of each from described at least two connectors (388,389),
Wherein, described at least two connectors (388,389) are attachable via described passage (392,393) towards the exit passageway (384) in mixed block; And
Wherein, in described mixed block, be provided with switch (396), this switch is used for from described at least two connectors (388,389), select connector to realize being communicated with for the flowing of the described exit passageway (384) in described mixed block.
2. mixed block according to claim 1, wherein, described switch (396) is included in the inner flow channel (397) of described switch (396), and whereby by activating described switch (396), described in described flow channel (397) can be positioned in, between one of at least two connectors (388,389) and described exit passageway (384), form air flow communication.
3. mixed block according to claim 1, wherein, in use, at the stream of fuel gas by before or after switch, what in described mixed block, form fuel gas and air is pre-mixed thing.
4. mixed block according to claim 1, wherein, described switch can manually operate.
5. mixed block according to claim 1, wherein, described switch can operate via control system.
6. mixed block according to claim 1, wherein, is provided with the device for arranging the pressure of at least one in described fuel gas supply source.
7. mixed block according to claim 1, wherein, be provided with the device of the supply flow rate of at least one in supply flow rate for arranging air supply source and/or described fuel gas supply source, this air supply source is used for being formed described in fuel gas and air and is pre-mixed thing.
8. mixed block according to claim 1, wherein, at each injector be provided with for dissimilar fuel gas of at least two connectors at mixed block place.
9. mixed block according to claim 1, wherein, mixed block comprises the air intlet with the number of combustible gas inlet connector.
10. be used in the flame detection electrode in infra-red radiation gas burner system, comprise:
-mixed block according to claim 1;
-pipe, described pipe is used for the supply being pre-mixed thing described in fuel gas and air, during described pipe and the described exit passageway of described mixed block are in and flow and be communicated with; Wherein, when flame detection electrode in use time, by the exit operating in described pipe of infra-red radiation gas burner can ignited flammable gas and air be pre-mixed thing;
-two electric conductors, described two conduction physical efficiencys are electrically connected by means of the ionization current of flame, this flame is produced when lighting by being pre-mixed the stream of thing described in described pipe, described electric conductor, by means of the electric current produced of described electric conductor, is used for detecting the proper operation of described infra-red radiation gas burner.
11. flame detection electrodes according to claim 10, wherein, one of described two electric conductors are positioned at the inside of described pipe, and second electric conductor is a part for described pipe or described pipe, or are connected to described pipe.
12. are used in the ignitor in infra-red radiation gas burner system, comprising:
-mixed block according to claim 1;
-pipe, described pipe is used for the supply being pre-mixed thing described in fuel gas and air, during described pipe and the described exit passageway of described mixed block are in and flow and be communicated with;
-two electric conductors, voltage can be applied on described two electric conductors, and described two electric conductors are used for producing spark via described voltage, and that lights the fuel gas that flows through described pipe and air thus is pre-mixed thing.
13. gas combustion infrared transmitter systems, comprising: one or more flame detection electrodes with mixed block according to claim 1; And/or there are one or more ignitors of mixed block according to claim 1.
14. methods being used for changing fuel gas supply in mixed block, wherein, use mixed block as described in claim 1, and wherein activate described switch, to select fuel gas to supply between at least two connectors described in mixed block place.
The method of 15. operation gas combustion infrared transmitter system according to claim 13, wherein, the gas combustion infrared transmitter of gas combustion infrared transmitter system can operate the fuel gas of two kinds or more type, and wherein, when the operation of gas combustion infrared transmitter is transformed into the fuel gas of another kind of type from the fuel gas of a type, activate the switch of described mixed block, the fuel gas supply of the mixed block of electrode is led to conversion, so that the operation of gas combustion infrared transmitter and electrode, described electrode operates with the fuel gas of gas combustion infrared transmitter for identical type.
CN201410569495.XA 2013-10-23 2014-10-23 Gas mixing block Pending CN104566380A (en)

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EP20130290253 EP2865942A1 (en) 2013-10-23 2013-10-23 Gas mixing block for supplying a flame ionisation detector with different fuels
EP13290253.7 2013-10-23

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