EP0044657A2 - Injecteurs de fluide - Google Patents

Injecteurs de fluide Download PDF

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Publication number
EP0044657A2
EP0044657A2 EP81303090A EP81303090A EP0044657A2 EP 0044657 A2 EP0044657 A2 EP 0044657A2 EP 81303090 A EP81303090 A EP 81303090A EP 81303090 A EP81303090 A EP 81303090A EP 0044657 A2 EP0044657 A2 EP 0044657A2
Authority
EP
European Patent Office
Prior art keywords
fluid
terminal
injection device
valve
injector
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.)
Withdrawn
Application number
EP81303090A
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German (de)
English (en)
Other versions
EP0044657A3 (fr
Inventor
David Tindall
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.)
Individual
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Individual
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Filing date
Publication date
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Publication of EP0044657A2 publication Critical patent/EP0044657A2/fr
Publication of EP0044657A3 publication Critical patent/EP0044657A3/fr
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/24—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space
    • F23D11/26—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space with provision for varying the rate at which the fuel is sprayed
    • F23D11/28—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space with provision for varying the rate at which the fuel is sprayed with flow-back of fuel at the burner, e.g. using by-pass

Definitions

  • This invention concerns improvements in or relating to fluid injectors.
  • a fluid injector comprising an injection device, and means for connecting said fluid injector to fluid delivery and return lines, said injection device being capable of being removed from an operating position and relative to said connecting means whilst said connecting means is connected to the fluid delivery and return lines, said fluid injector being such as to provide for flow between the fluid delivery and return lines through said connecting means when said injection device is removed whilst isolating the fluid delivery and return lines from said injection device upon such removal.
  • the invention may be applied to various fluid injectors.
  • One such injector has a tip shut off facility and is mechanically atomised and has a change-over valve which connects to a fluid delivery and return circuit as featured in our United Kingdom patents Nos. 1,233,317 and 1,231,631.
  • Another fluid injector to which the invention may be applied is one of the pressure jet type which is mechanically atomised and incorporates a fluid atomiser at the discharge end and an operating valve which connects to a fluid delivery and return circuit.
  • a third fluid injector is a multi-fluid injector with a tip shut off facility which is atomised by a second fluid and includes a means to select discharge of either fluid or a mixture of the fluids and includes a change-over valve which connects to a fluid delivery and return circuit.
  • a tip shut off facility which is atomised by a second fluid and includes a means to select discharge of either fluid or a mixture of the fluids and includes a change-over valve which connects to a fluid delivery and return circuit.
  • interlocking male and female terminals are arranged so that it is not possible to condition the injector for discharge until the tip valve or the fluid atomiser whichever the case may be has been inset to the position at which discharge can be safely permitted.
  • the interlocking device is arranged so that the tip valve or fluid atomiser may not be retracted from the position of proper discharge without first isolating the fluid supply.
  • the second fluid is also ported through the interlocking device so that upon retraction of the tip valve or fluid atomiser the supply of second fluid is also isolated.
  • the interlocking device will operate to isolate the fluid delivery and return circuit as well as the second fluid circuit before the tip valve or fluid atomiser is retracted from the range of positions at which discharge can be permitted.
  • External means may be provided so that in the event the tip valve or fluid atomiser is accidentally retracted when conditioned to discharge, then the change-over valve or operating valve may be automatically positioned as if to condition the injector for non-discharge.
  • Each of the fluid injectors to be described is primarily intended for incorporation in an oil fuel burner suitable for use in a fossil fired burner. Such burners are arranged in the furnace walls of the boiler for firing the boiler's fuel. Oil fuel is used as the prime fuel for firing burners, or as a secondary fuel for igniting coal when that is the primary fuel, or in combination with gas as an alternative primary fuel.
  • the boiler would generate steam, and have land, marine or other industrial applications.
  • the fluid injector 1 shown in Figures 1 to 7 has a considerable degree of similarity to that disclosed in our United Kingdom patents Nos. 1,231,631 and 1,233,317 in that it includes an injection device 2 at its forward end and a change-over valve 3 at its rearward end, both of which are essentially constructed and operate in a like manner to their counterparts in those patents.
  • the injection device and change-over valve will only be described herein so far as it may be necessary for the present injector to be understood, and attention is directed to our aforementioned patents for a full and complete disclosure which is herein incorporated by reference.
  • the injection device 2 includes an atomiser assembly 4 in which the fluid is mechanically atomised during discharge supported in the forward end of the injector barrel 5 which would normally be suitably mounted in the wall of the boiler with its forward end in an operating position inset from the boiler interior.
  • a tip valve 6 of the injection device is mounted for axial sliding movement and is acted upon by a spring 7 the bias of which is sufficient to urge the tip valve forwardly to close a discharge passage 8 in the atomiser assembly when there is no fluid supply to the injection device.
  • fluid is continuously supplied to the injection device 2 whenever the fluid injector is conditioned to discharge the fluid or is shut-down. It is a particular feature of the injector that when conditioned for non-discharge, fluid is continuously circulated through it to cool the forward region thereof and obviate the need for the injector to be retracted away from the boiler interior. Again, because of the continuous circulation, fuel cracking and blockage in the injector is obviated, and there is no necessity for cleaning between discharge operations.
  • a central tube 9 is mounted within the barrel 5 to define an annular duct 10 between itself and the barrel.
  • hot fluid under pressure from an external oil fuel delivery line of an oil fuel delivery and return circuit is caused to flow through a central duct within the central tube 9 to and through the tip valve 6 and into a chamber 4a in the atomiser assembly 4 from which the fluid will pass generally radially outwardly to return through the annular duct 10 eventually to return to an external oil fuel return line of the same circuit.
  • Such a flow has the result that the tip valve is urged forwardly to close off the discharge passage 8 in the atomiser assembly.
  • the chamber 4a is behind the discharge passage and its communication with the central tube and the annular duct is not affected by the closure of the discharge passage so that even though the injection device is conditioned for non-discharge, fluid can continuously circulate within the central tube and barrel 5 past the tip valve, as shown in Figure 2 in which the blocked arrows denote the supply flow and the open arrows the return flow.
  • the change-over valve might more aptly be termed a flow reversing or flow diverting valve since its valve spool 47 is, as will be later described, linearJy movable between positions in one of which to divert fluid supplied from the oil supply line along one flow path into the central tube and to provide a return path from the annular duct back to the oil return line, and in the other one of which to divert fluid supplied from the oil supply line along what was the return path into the annular duct and to provide a return path from the central tube (which previously served as said one flow path) back to the oil return line.
  • the change-over valve 3 is, like the corresponding component in the fluid injector of our aforementioned patents, operable (in dependence on the position of its valve spool 47) to condition the injector for fluid discharge or non-discharge, that conditioning being directly brought about by a reversible fluid pressure differential the mode of which is determined by the direction of the fluid flow within the injector as controlled by the change-over valve.
  • the change-over valve permits a continuous circulation of fluid within the injector from the oil supply back to the oil return line when the injector is coupled into a mains supply of fuel oil.
  • the present injector of Figures 1 to 7 differs from that of our aforementioned patents in that its change-over valve 3 is not located axially in line with the injector barrel 5. Rather, the change-over valve is displaced downwardly of the barrel, although with its longitudinal axis still parallel with that of the barrel, and there is provided a fluid coupling device 11 between the change-over valve and the rearward end of the barrel.
  • the function of the fluid coupling'device 11 is to enable the barrel 5 with the central tube 9 therein to be retracted from the boiler wall to permit inspection, servicing or replacing of the components of the injection device 2 without disturbing the mounting of the change-over valve 3 and the oil supply and return line coupled thereto.
  • the fluid coupling device 11 is such that the oil supply and return line are automatically isolated from the unit comprising the injector barrel 5 and the central tube 9 unless the barrel is fully inset to the correct operating position in the boiler wall 15 at which fluid discharge is safely permissible. Retraction of the barrel from the fully inset position automatically causes the fluid coupling device to disconnect the oil supply and return lines from the barrel and central tube unit. Accordingly, even though the change-over valve 3 may be positioned to condition the fluid injector for discharge, until the barrel has been fully inset to the correct operating position discharge will not take place. Indeed, should at that time the change-over valve be positioned to condition the injector for non-discharge but to accept a continuous circulation of fluid through itself, i.e.
  • the fluid coupling device will override the change-over valve with respect to permitting flow to the barrel and central tube unit in all positions of the barrel except the fully inset operating one.
  • the change-over valve function to cause either discharge from the injector or the injector to have a non-discharge condition with continuous circulation. It follows that if the barrel was accidentally or unintentionally withdrawn with the change-over valve positioned to condition the injector for discharge, the fluid coupling device would function to fail safe the injector. Normally, of course, the change-over valve would be positioned to condition the injector for non-discharge before the barrel was withdrawn.
  • a carrier tube 12 which carries at its forward end a flame stabiliser 13.
  • the carrier tube is slidably supported in a centre carriage 14 which may form part of a burner plate which, in turn, forms part of the boiler wall 15, or which, as shown, may be a separate component bolted at 16 to the boiler wall.
  • the centre carriage is made fast with the boiler wall, and the carrier tube is fixed in any desired position with respect to the boiler wall by means of locating bolts carried by the centre carriage, one such bolt being referenced 17.
  • the fully inset position of the barrel at which discharge can be safely permitted is shown in Figures 2 and 4.
  • the fluid coupling device 11 comprises a pair of female and male terminals 19 and 20, respectively.
  • the female terminal is made fast with the carrier tube 12 and hence is prevented from movement since the carrier tube is fixed to the boiler wall 15.
  • the change-over valve 3 is built on to the fixed female terminal.
  • the male terminal is made fast with the barrel 5 and hence is movable with it and with respect to the female terminal.
  • Carried by each terminal are two valves which are self-actuated to a closure position and which are paired with the corresponding valves of the other terminal such that when the terminals are separated upon the barrel being withdrawn, the valves will automatically move to a closed position with respect to their own terminal.
  • the paired valves will automatically urge one another to an open position with respect to their own terminal. It is that closing and opening of the poired valves which isolates and communicates, respectively, the fluid supply and return lines through the change-over valve with respect to the barrel and central tube unit.
  • the self-closure valves are denoted by references 21 to 24.
  • the male terminal 20 comprises a terminal block 25 which is affixed to the barrel 5 by means of a collar 26a welded thereto and screwed into the block.
  • the valves 21, 22 are biased by springs 26 towards their seats 21a, 22a in male collars 27 which are affixed to and project from the terminal block.
  • a duct 28 in the terminal block communicates the valve 22 with the barrel annular duct 10, and a second duct 29 in the terminal block connects the other valve 21 with the interior of the central tube 9.
  • the female terminal 19 includes a terminal plate 30 to which the housing 31 of the change-over valve 3 is made integral as by bolting at 32.
  • a connecting block 33 having fast with its uppeer surface a pair of terminal blocks 34, 34a which have female collars 35 a press fit in the terminal plate.
  • the terminal blocks 34, 34a are mounted on opposite sides of the carrier tube 12 and are welded to it by which they together with the terminal plate and the connecting block are made fast with the carrier tube. It is envisaged that the pair of terminal blocks, terminal plate and connecting block could be a one-piece casting.
  • the female collars 35 are sized and arranged to receive the respective male collars 27 and make a seal therewith as by scaling rings 36.
  • the valves 23, 24 are mounted one in each of the terminal blocks 34, 34a in chambers 37, 37a therein, each of which communicates with the interior of the respective female collar. Springs 38 bias these self-closure valves toward their rrespective seats 23a, 24a in the chambers 37, 37a, the opposite ends of which arc closed by plugs 39.
  • a duct 40 extends through the terminal block 3 , the connecting block 35 and the terminal plate 30 to interconnect the chamber 37 with a central chamber 41 in the change-over valve 3.
  • a duct 41a extends through the other terminal block 34a, the connecting block and the terminal plate to interconnect the chamber 37a with a radially outer chamber 42 in the change-over valve.
  • the male terminal 20 is movable with respect to the fixed female terminal 19 to withdraw and inset the barrel 5 by means of a handwheel 43 which is pinned at 44 to a spindle 45 in turn journalled for rotation in the terminal block 25 but made axially fast therein.
  • the forward end 46 of the spindle 45 projects from the terminal block 25 and is screwthreaded to engage in a threaded bore 46a in the terminal plate 30 of the female terminal 19.
  • rotation of the handwheel will screw the spindle into or out of the terminal plate and cause the terminal block 25 (together with the barrel and central tube unit) to move towards or away from the terminal plate.
  • the terminal block 25 is axially guided during such movement by the sliding engagement of its male collars 27 with the female collars 35 of the terminal blocks 34, 34a.
  • an inlet port 48 of the change-over valve which is permanently connected to the oil supply line communicates with the central chamber 41, and an outlet port 49 of the change-over valve which is permanently connected to the oil return line communicates with the radially outer chamber.
  • the spool 47 has lands 50, 51 slidable within bushings 52, 53 mounted in the housing 31.
  • the central chamber 41 is defined within the bushing 52, and the radially outer chamber 42 between that bushing and the terminal plate 30.
  • the spool is selectively linearly movable into fluid discharge and non-discharge positions by any suitable means, that illustrated being a double acting pneumatic piston/cylinder unit 54 whose cylinder is bolted at 55 to the rear end of the bushing 53.
  • the flow direction within the fluid injector is such that the injection device will be conditioned for non-discharge whilst at the same time fluid will circulate continuously from the oil supply line through the change-over valve 3 and the interconnected female and male terminals 19, 20 to the central tube 9 and return from the annular duct 20 via those terminals to the change-over valve and thence to the oil return line.
  • That direct flow path through the change-over valve enables an additional circulation of fluid to be introduced into the injector in its non-discharge condition, as in the injector of our aforementioned patents.
  • An adjustment mechanism is provided whereby dependent on the adjusted position of a back stop cover 64 screwed on to a sleeve 65 projecting rearwardly from an end plate 66 of the air cylinder and within which the valve spool 47 is slidably supported, a back stop 67 attached to the end of the valve spool may be located so that a land 68 on the bushing 53 interferes with fluid flowing from the radial holes 62 in the spool to provide a selective range of fluid flows circulating within the spool which may be preset at any desired fluid flow within the constraints of the geometry of the change-over valve and the energy available for pumping fluid.
  • the adjustment mechanism may be omitted so that fluid circulating through the valve spool is fixed for given external pressures operating in the oil supply and return lines.
  • the described direct fluid flow path through the change-over valve spool 47 has another purpose, and a particularly important one, in the present injector, as will appear.
  • the paired valves 21, 23 and 22, 24 are free to close against their respective seats under the bias of their springs 26 and 38, and so seal off the flow lines in the mule terminal and the female terminal 19.
  • fluid is sealed within the barrel and central tube unit.
  • the valves in the female terminal seal off the described first and second flow paths therein at the terminal blocks 34, 34a, so that fluid cannot discharge from the female terminal even though the change-over valve 3 continues to communicate the oil supply line therewith.
  • the external conduit flow lines coupling the change-over valve 3 with the oil mains line and constituting the oil supply and return lines can be of considerable length.
  • fluid can continue to circulate from the oil supply back to the return line directly through the described alternative flow path through the valve spool 47 of the change-over valve, as indicated by the arrows in Figure 5.
  • Thu b the oil is kept in a liquid state, and when the barrel 5 is replaced in the carrier tube 12 and inset again to the correct operating position to open again the valve pairs 21, 23 and 22, 24, fluid is able to flow without any appreciable delay from the oil supply line to circulate within the central tube 9 and barrel annular duct 10 back to the return line to cool the injection device 2.
  • Fluid can return from the central tube 9 through the duct 29 in the male terminal 20 and via the opened valve pair 21, 23 into the duct 40 in the female terminal 19 to pass downwardly into the central chamber 40 of the change-over valve 3 and through the passage 61 in the spool 47 to flow via the radial holes 62 through the hole 60 in the bushing 53 back into the outlet port 49 to be returned into the oil return line.
  • the return flow is denoted by the open arrows in Figures 3 and 4.
  • the described flow direction is such as to condition the tip valve 6 to open so that fluid will discharge through the discharge passage 8 as shown in Figure 4.
  • the length of the aperture formed between each such valve and its seat must be suitably sized.
  • the male terminal 20 is withdrawn together with the barrel and central tube unit by operation of the handwheel 43, fluid flow continues past the valve pairs for part of the travel of the male terminal.
  • some tolerance must be provided to accommodate discharge through the injection device 2 in the course of retraction of the barrel, and this tolerance must be provided in defining the allowable position of the injector device in relation to the carrier tube 12 for discharge purposes.
  • the fluid injector lA shown therein is generally similar to the injector 1 of Figures 1 to 8 as modified to incorporate the vented male valves 71 and functions in the same way.
  • the present injector is modified, to enable the use of a second fluid to regulate discharge.
  • attention is drawn to our United Kingdom paten No. 1,497,271 the subject matter of which is incorporated herein by reference.
  • the injector lA will only be described herein insofar as the principal differences between it and the injector 1 are concerned.
  • the second fluid which could be steam
  • a steam supply circuit is connected via an inlet port 75 with the female terminal 19 so that when the two terminals are separated upon withdrawal of the injector device, means must be provided to isolate that steam supply from the broken fluid coupling device 11 so that it cannot escape from the female terminal.
  • the steam inlet port 75 is provided in the connecting block 33 and communicates via a duct 76 therein with a chamber 37b in a third terminal block 34b forming a part of the integral block and plate structure of the female terminal 20.
  • a third spring biased self closure valve (not shown) is arranged in the chamber 37b to seal against its seat in a female collar when the male terminal 20 is separated from the female terminal.
  • a third self venting and fixed male valve 71a is arranged so that its male collar 27 will enter that female collar (in the same manner as the other two male valves in their respective female collars) when the male terminal is connected with the female terminal to open the third spring biased valve to permit steam to escape through that male valve via a duct 77 in a sleeve 78 fast with the terminal block 25 and into the second annular duct 73.
  • the fluid injector 18 shown in Figures 12 and 13 is of the pressure jet type which is mechanically atomised and incorporates a fluid atomiser assembly 4A and an operating valve 3A.
  • a fluid atomiser assembly 4A and an operating valve 3A.
  • either oil fuel is passed down the central tube 9 or the tube and the atomiser assembly is purged with a cooling fluid.
  • Cooling fluid is supplied to the operating valve 3A through a port 79 and oil from an oil supply line through a port 80.
  • cooling fluid can flow into a chamber 82 in which the spool is reciprocated as by a double acting pneumatic piston/cylinder unit 54 and via a passageway 83 in the spool into a duct 84 in the female terminal and thence into a chamber 37 housing a spring biased closure valve 23. Since the'male terminal is shown withdrawn, the valve 23 is closed to seal off escape of the cooling fluid from that chamber 37.
  • the male collar 27 will enter the female collar 35 and cause its self vented and fixed male valve 71 to urge the valve 23 open so that fluid, whether it be oil or purging cooling fluid as the case may be depending on the position of the valve spool 81, is caused to flow from the chamber 37 past the opened valve 23 into the male collar 27 and thence via the duct 29 into the central tube 9 down towards the atomiser assembly 4A.
  • Means may be provided for intercommunicating those first and second flow paths to obviate those dead legs upon retraction of the male terminal 20 so that fluid delivered from the oil supply line is able to circulate continuously through them back into the oil return line as well as circulating directly through the valve spool 47 of the change-over valve 3.
  • the first and second flow paths are intercommunicated in the female terminal 19 itself when the male terminal 20 is retracted.
  • the ducts 40, 41a are interconnected in the female terminal 19 by passages 88, 89 issuing at one end respectively from each and at the opposite end into a valve chamber 90.
  • a valve member 91 is biased by a spring 92 off its seat 93 in the valve chamber 90 when the male terminal 20 is retracted so that the passages 88, 89 intercommunicate through the valve chamber.
  • valve member 91 extends into a recess 94 in the female terminal 19 with the spring 92 located between the base of the recess and the valve head 95. Sealing means 96 are provided around the stem of the valve member 91 to prevent escape of fluid from the female terminal 19 when the ducts 40, 41a are interconnected.
  • the male terminal 20 carries a plug 97 sized to enter the recess 94, when the male terminal 20 is interconnected with the female terminal 19 to inset the barrel 5 at which time it will engage the valve head 95 to urge the valve member 91 against the bias of the spring 92 and into sealing engagement with its valve seat 93 (as shown in Figure 15).
  • the passages 88 and 89 are isolated from each other, and the resulting flow paths in the female terminal are as in the first and .second fluid injectors 1 and 1A.
  • the bridge 20A is generally similar to the male terminal 20 but lacks the ducts 28 and 29. Instead, a duct 98 in the terminal block 25 direct intercommunicates the valves 21,22. Moreover, the barrel 5 is replaced by a pilot tube 99 closed at its forward end. Whilst the valves 21, 22 are shown as self-actuating to closure they could alternatively be self venting male valves as in Figure 8.
  • the male terminal 20 When the male terminal 20 has been retracted to withdraw the barrel to enable inspection or servicing of the injection device 2, it is replaced by the male bridge 20A which couples with the female terminal 19 in the same manner as the male terminal 20.
  • the valves 21, 22 engage the valves 23, 24 respectively so that the paired valves open.
  • the ducts 40, 41a in the female terminal 19 are connected with each other through the paired opened valves 23, 21,the duct 98 in the male bridge 20A and the paired opened valves 24,22. Accordingly, fluid delivered from the oil supply line to the change-over valve 3 can circulate through the female terminal 19 via the male bridge 20A back into the female terminal to return via the change-over valve into the oil return line.
  • the injection device together with the fluid coupling device and flow control valve comprise a composite structure having flow paths internal to that structure (thereby obviating the need for external connecting tubes or pipes between the various components of that structure which could be prone to leakage where connected to the individual components) along which oil can be routed by the flow control valve from the fluid delivery line to the injection device.
  • the tip valve embodiments providing for a return flow of oil, such flow will also be routed by the flow control valve back to the fluid return line from the injection device via the fluid coupling device along such internal flow paths.
  • An oil burner incorporating any of the fluid injectors as described would also have an air register to provide the combustion air, valves to regulate and shut off the air and fuel supplies and an igniter to initiate combustion.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Fuel-Injection Apparatus (AREA)
EP81303090A 1980-07-17 1981-07-07 Injecteurs de fluide Withdrawn EP0044657A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8023409 1980-07-17
GB8023409 1980-07-17

Publications (2)

Publication Number Publication Date
EP0044657A2 true EP0044657A2 (fr) 1982-01-27
EP0044657A3 EP0044657A3 (fr) 1982-09-29

Family

ID=10514842

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81303090A Withdrawn EP0044657A3 (fr) 1980-07-17 1981-07-07 Injecteurs de fluide

Country Status (7)

Country Link
EP (1) EP0044657A3 (fr)
AR (1) AR227679A1 (fr)
AU (1) AU7272481A (fr)
BR (1) BR8104573A (fr)
CA (1) CA1155386A (fr)
ES (1) ES8205304A1 (fr)
ZA (1) ZA814571B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125798A2 (fr) * 1983-05-06 1984-11-21 Spectus Limited Injecteurs de fluide

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL52800C (fr) *
GB940747A (en) * 1961-02-20 1963-10-30 Swinney Brothers Ltd Safety shut-off device and sprayer holder for atomised oil sprayers
GB997864A (en) * 1962-09-05 1965-07-07 Peabody Ltd Improvements in or relating to oil burners
US3844479A (en) * 1972-11-30 1974-10-29 Tectron Eng Ltd Fluid injector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL52800C (fr) *
GB940747A (en) * 1961-02-20 1963-10-30 Swinney Brothers Ltd Safety shut-off device and sprayer holder for atomised oil sprayers
GB997864A (en) * 1962-09-05 1965-07-07 Peabody Ltd Improvements in or relating to oil burners
US3844479A (en) * 1972-11-30 1974-10-29 Tectron Eng Ltd Fluid injector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0125798A2 (fr) * 1983-05-06 1984-11-21 Spectus Limited Injecteurs de fluide
EP0125798A3 (fr) * 1983-05-06 1986-04-16 Spectus Limited Injecteurs de fluide

Also Published As

Publication number Publication date
AR227679A1 (es) 1982-11-30
ES504001A0 (es) 1982-06-01
AU7272481A (en) 1982-01-21
ES8205304A1 (es) 1982-06-01
CA1155386A (fr) 1983-10-18
ZA814571B (en) 1982-07-28
EP0044657A3 (fr) 1982-09-29
BR8104573A (pt) 1982-04-06

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