AU2018256499B2

AU2018256499B2 - Heating device

Info

Publication number: AU2018256499B2
Application number: AU2018256499A
Authority: AU
Inventors: Michel De Fierlant; Philippe De Marchant Et D'ansembourg
Original assignee: Haemers Tech Sa
Current assignee: Haemers Technologies Sa
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2025-07-10
Anticipated expiration: 2038-10-30
Also published as: AU2018256499A1

Abstract

#$%^&*AU2018256499B220250710.pdf##### Abstract The present invention concerns a heating device (1), or heating tube, wherein a combustive fluid inlet (11), respectively a combustible fluid inlet (21) inlet, is 5 connected to a combustion head (30) via a first pipe (13), respectively a second pipe (23), the second pipe (23) being housed at least partially in the first pipe (13). In this heating device (1), the combustion head (30) is distant of at least 50cm from the combustible fluid inlet (21), which enables to create a "cold zone" between the two. The first (13) and the second (23) pipes enable to bring the combustible fluid 10 and the combustive fluid separately to the combustion head (30), even if the latter is remote by at least 50cm from the combustible fluid (21) and combustive fluid (11) inlets. 10791237_1 (GHMattes) P109996.AU Abstract 2018256499 30 Oct 2018 The present invention concerns a heating device (1), or heating tube, wherein a combustive fluid inlet (11), respectively a combustible fluid inlet (21) inlet, is 5 connected to a combustion head (30) via a first pipe (13), respectively a second pipe (23), the second pipe (23) being housed at least partially in the first pipe (13). In this heating device (1), the combustion head (30) is distant of at least 50cm from the combustible fluid inlet (21), which enables to create a "cold zone" between the two. The first (13) and the second (23) pipes enable to bring the combustible fluid 10 and the combustive fluid separately to the combustion head (30), even if the latter is remote by at least 50cm from the combustible fluid (21) and combustive fluid (11) inlets. 10791237_1 (GHMatters) P109996.AU 20 18 25 64 99 3 0 O ct 2 01 8 Fig. 1 27 02 33 91 23 35 34 40 26 1/2 50 oo 31 13 30 32 35 41 42 21 11 17 09 2018256499 30 Oct 2018

Description

1/2 30 Oct 2018 2018256499 30 Oct 2018

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2018256499 11 Jun 2025

HEATING HEATING DEVICE DEVICE

TECHNICAL FIELD TECHNICAL FIELD The present The present invention invention relates relates to to a heating a heating device device and aand a heating heating method.method.

5 2018256499

PRIOR PRIOR ART ART A heating A heatingtube, tube,ororradiant radianttube, tube, isis aa heating heating device. device. It comprises, It comprises, in particular, in particular,

a combustivefluid a combustive fluid inlet, inlet, aa combustible fluid inlet, combustible fluid inlet,a acombustion combustion head connected head connected to to the the

combustive fluidinlet combustive fluid inletandand thethe combustible combustible fluid fluid inlet.inlet. It further It further comprises comprises a heat-emitting a heat-emitting

10 tube of tube of which which aa first first part partisis provided providedtoto receive a aflame receive flameemitted emittedbybythe thecombustion combustion head. head.

The combustive The combustivefluid fluidand andthe thecombustible combustible fluidare fluid aremixed mixed in in thethe combustion combustion head. head. The The resulting mixtureisis ignited resulting mixture ignitedatat the thestart start of of the the combustion combustion head head to generate to generate the in the flame flame the in the

first part first partofofthe theheat-emitting heat-emittingtube. tube.This Thisflame flamecreates creates heat heat which is diffused which is diffused along the along the

heat-emitting tube,ininorder heat-emitting tube, ordertotoheat heata azone. zone. 15 There aresituations There are situationswherein wherein the the fluid fluid inlets inlets cannot cannot be close be close to zone to the the zone to be to be

heated, asthe heated, as thefluid fluidinlets inlets must mustbebeable able to to bebe easily easily accessible accessible for for an operator. an operator.

A first A first example example ofofsuch such a situation a situation is is a heating a heating tubetube for for a sauna. a sauna. It isItnot is not veryvery

practical practical to to have toprovide have to provideanan accessible accessible space space adjoining adjoining the sauna the sauna to be to be able to able have to thehave the

combustive fluid and combustive fluid andcombustible combustible fluid fluid inlets inlets andand potentially potentially the the casing casing there.there. The The

20 assembly comprisingthethefluid assembly comprising fluidinlets, inlets, the the combustion headand combustion head and thethe first part first part of of the the heat- heat- emitting tubeisistherefore emitting tube thereforeoften often installed installed with with a certain a certain distance distance with with respect respect to thetosauna. the sauna. Consequently, thespace Consequently, the spacebetween between thisthis assembly assembly and and the sauna the sauna is heated, is heated, whereas whereas it is it is

situated situated outside of the outside of the zone zonetotobebeheated. heated. This This creates creates a risk a risk of fire of fire andand creates creates an an

unnecessary energyexpense. unnecessary energy expense. 25 25 A second A secondexample example of such of such a situation a situation is a heating is a heating tube fortube for industrial industrial

equipment such equipment such as aas a tunnel tunnel furnace furnace or a chemical or a chemical bath. Itbath. is notIt ideal is notthat ideal thethat theinlets fluids fluids inlets are installed in are installed in a a tunnel furnaceororininthe tunnel furnace theproximity proximityof of itsinlet its inlet /its /its outlet outlet because because ofofthe theheat heat that emerges that emerges from from it. It it. It is is notnot ideal ideal either either thatthat theythey are installed are installed too close too close to dangerous to dangerous

chemical baths. The chemical baths. Theassembly assembly comprising comprising fluid fluid inlets,the inlets, thecombustion combustion head head andand the the first first

30 part 30 part of the of the heat-emitting heat-emitting tube tube is is therefore therefore generally generally installed installed with a distance with a certain certain with distance with respect respect to to the the tunnel tunnel furnace furnace and and to to the the chemical chemical bath. bath. Consequently, the space Consequently, the spacebetween between 11

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this assembly this and assembly and thethe tunnel tunnel furnace furnace orchemical or the the chemical bath isbath is heated, heated, whereas whereas it is it is situated situated outside of the outside of the zone to be zone to heated. This be heated. This creates creates aa risk risk of of fire fireand and creates creates an an unnecessary unnecessary

energy expense. energy expense.

A third A third example of such example of sucha asituation situation is is aa heating heating tube tube to to decontaminate decontaminatethethe 5 ground through ground throughevaporation evaporationofofpollution. pollution. Toxic Toxic earth earth piled piled on on aa heap of several heap of several metres in metres in 2018256499

height height must be able must be able to to be be heated. An operator heated. An operator cannot cannotclimb climbup upsuch sucha aheap heaptotoaccess access the the

combustive fluid and combustive fluid and combustible combustiblefluid fluid inlets. inlets. The The combustive fluid and combustive fluid combustiblefluid and combustible fluid inlets inlets must thereforebebe must therefore installed installed with with a certain a certain distance distance with with respect respect to thetoheap the of heap of earth. earth.

The assembly The assembly comprising comprising thethe fluidinlets, fluid inlets, the the combustion combustion head head and and the the first first part part of of the the

10 heat-emitting tubeisistherefore heat-emitting tube therefore generally generally installed installed remote remote from from the place the place where where the the heating heating

tube enters tube entersinto intothe theheap heap of earth, of earth, whereas whereas it is it is place the the place where where it wouldit be would idealbe to ideal start to start heating. heating. Consequently, the space Consequently, the spacebetween between thisassembly this assemblyandand thethe heap heap of earth of earth is is heated, heated,

whereasitit is whereas is situated situated outside of the outside of the zone to be zone to beheated. heated.This Thiscreates createsa a riskofoffire risk fire and and creates creates an an unnecessary energyexpense. unnecessary energy expense. 15 Document Document JPJP3 3722410 722410B2B2describes describesa heating a heating tube tube wherein wherein the the fluid fluid connection between connection between thethe combustible combustible fluidfluid inlet inlet and and the combustion the combustion head ishead is partially partially

housed housed ininthe thefluid fluid connection connectionbetween betweenthethe combustive combustive fluidfluid inlet inlet andand the the combustion combustion

head. Thefluid head. The fluid inlets inlets are by aa casing are by casingwhich whichisisfixed fixedtotothe thewall wallofofaafurnace, furnace,and andthethe combustion head combustion head is situated is situated in a in a hole hole of said of said wall. wall. Thus, Thus, the heated the heated zone zone starts starts just from just from

20 the other the otherside sideofofthe thewall wallwith withrespect respecttoto the the casing. casing. Indeed, Indeed, thisthis is the is the desired desired effect effect in this in this

heating tube,asasitit is heating tube, is preferable thatthe preferable that thewhole whole inside inside of of the the furnace furnace is heated. is heated.

Document Document DEDE 3907946 3907946 A1 also A1 also describes describes a heating a heating tube wherein tube wherein the fluid the fluid

connection between connection between thethe combustible combustible fluidfluid inlet inlet and and the combustion the combustion head ishead is partially partially

25 head. 25 head. TheThe fluid fluid inletsareare inlets through through a casing a casing which which is fixed is fixed to atowall a wall of aoftank a tank and the and the

combustion head combustion head is issituated situatedjust just downstream downstreamof of thethe inlets.Thus, inlets. Thus,the theheated heated zone zone starts starts

slightly slightly upstream upstream ofofthe thewall, wall,ororatatthe thewall. wall.Indeed, Indeed, this this is is the the desired desired effect effect in the in the heating heating

tube of tube of this this document, document, as as it it isispreferable preferable thatthethe that whole whole inside inside of the of the tanktank is heated. is heated.

Document Document FRFR 2590001 2590001 A1A1 describes describes a device a device for for generating generating hothot water water 30 wherein 30 wherein thethe fluidconnection fluid connectionbetween between thethe combustible combustible fluid fluid inletand inlet andthe thecombustion combustion head head

is is partially partiallyhoused in the housed in fluid connection the fluid betweenthethecombustive connection between combustive fluid fluid inletandand inlet the the 2 2

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combustion head.The combustion head. The combustion combustion headhead is situated is situated justjust downstream downstream of fluid of the the fluid inlets inlets in in

order to obtain order to obtain aa compact compact device. device. This This device device is not is not a heating a heating tube,tube, as it as it not does does not comprise comprise aaheat-emitting heat-emitting tube. tube. Indeed, Indeed, the the flame flameexiting exiting the the combustion combustionhead headis is created created

directly directly in in aa furnace. furnace.

5 Document US2014/0363775 Document US2014/0363775 A1 describes A1 describes a gas a gas igniter igniter intended intended to heat to heat the the 2018256499

combustion chamber combustion chamber of aofcoal a coal furnace furnace during during its start-up. its start-up. In device, In this this device, the fluid the fluid

head. The head. The combustion combustion head head is is situated situated slightly slightly downstream downstream of inlets, of the fluid the fluidininlets, in order to order to

10 obtain obtain aa compact compact device. device. ThisThis device device is anot is not a heating heating tube, tube, as it as doesit not does not comprise comprise a heat- a heat-

emitting emitting tube. Indeed, the tube. Indeed, the flame flameexiting exitingthe thecombustion combustion head head is created is created directly directly in ain a

furnace. furnace.

SUMMARY SUMMARY 15 The presentinvention The present invention may mayprovide providea aheating heatingdevice devicewherein wherein thecombustion the combustion and combustible and combustible inlets inlets areare highly highly offset offset from from the the combustion combustion head. head.

To this end, To this end, according accordingtotoa afirst first aspect, aspect, the the invention invention proposes proposesa aheating heating device comprising device comprising

•a combustive a combustive fluidinlet, fluid inlet, 20 •a combustible a combustible fluidinlet, fluid inlet, •a a combustion headprovided combustion head providedtotoemit emitaaflame, flame, •a first fluid a first connection fluid connection comprising comprising a a first pipe first pipeand andconnected connected fluidically fluidically to to thethe

combustive fluidinlet combustive fluid inletand andtotothe thecombustion combustion head, head,

•a second fluid a second fluid connection connection comprising comprising aa second second pipe pipe housed housedatatleast least 25 partially 25 partially in in the the firstpipe first pipeandand connected connected fluidically fluidically to combustible to the the combustible fluidand fluid inlet inlet to and the to the

combustion head, combustion head,

•a heat-emittingtube a heat-emitting tube of of which which a first a first part part is fluid is in in fluid communication communication with the with the

first fluid first connection fluid and connection andis is provided to to provided receive thethe receive combustion combustionhead head and and a a flame flame emitted emitted

by by the the combustion head, combustion head,

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•a fluid outlet a fluid outlet connected fluidicallytotothe connected fluidically thefirst firstpart partofofthe theheat-emitting heat-emitting tubetube

via a via secondpart a second partofofthe theheat-emitting heat-emitting tube, tube, and and

• means formoving means for moving fluid, fluid, enabling enabling to create to create a movement a movement of fluidofbetween: fluid between: the combustive o the combustivefluid fluidinlet inlet and andthe thecombustion combustion headhead via first via the the first fluidfluid

5 connection, connection, and and 2018256499

the first o the first part partofofthe theheat-emitting heat-emittingtube tubeand and the the second part of second part of the the heat- heat- emitting tube, emitting tube,

characterised characterised ininthat thatthe thecombustion combustion head head and and the the combustible combustible fluid fluid inlet areinlet are

separated by a adistance separated by distanceof ofat at least least 50cm, 50cm, advantageously advantageously at least at least 2m, more 2m, more 10 advantageously advantageously atatleast least 10m, 10m,and and in in thatthe that thecombustion combustion head head and and the combustive the combustive fluid fluid

inlet inlet are are separated by aa distance separated by distanceofofatatleast least 50cm, 50cm,advantageously advantageously at least at least 2m, 2m, more more

advantageouslyatatleast advantageously least 10m, 10m,

the second pipe is at least partially flexible to allow it to extend through the first the second pipe is at least partially flexible to allow it to extend through the first

pipe for the pipe for the entire entire distance between distance between the the combustible combustible fluid fluid inlet inlet and and thethe combustion combustion head,head, and and 15 the heating the heating device device further further comprises comprisesa aremote remote ignitionmeans ignition means enabling enabling to to remotely ignite aa flame remotely ignite flame at at the the combustion combustionhead head andand a remote a remote flameflame verification verification means means

enabling to remotely enabling to remotelyverify verifythe thepresence presenceof of thethe flame flame emitted emitted by the by the combustion combustion head. head.

In the device In the device according according toto the theinvention, invention, the the distance distance between betweenthethe combustion headand combustion head and thefluid the fluid inlets inlets enables enables to to create create aa large largenon-heated non-heated zone formedby zone formed by 20 the offsetting the offsetting between between thethe fluid fluid inletsandand inlets thethe combustion combustion head. head. Thus, Thus, only theonly zone the zone to be to be heated is actually heated is actually heated, whichdecreases heated, which decreasesthethe riskofoffire risk fire and andavoids avoidsanan unnecessary unnecessary

energy expense. energy expense.

This also enables This also enablesto to place place the the fluidfluid inlets, inlets, suchsuch that that they they are easily are easily

accessible, whilekeeping accessible, while keeping a great a great liberty liberty onposition on the the position of the of theofstart start of the zone, the heated heated zone, 25 which 25 which cancan be an be in in an inaccessible inaccessible place, place, forfor example, example, up high, up high, inside inside a space a space closed closed by aby a partition partition wall wall or or on on a a heap heap ofoftoxic toxicearth. earth. Choosing Choosing between between the the minimum 50cm, minimum minimum 50cm, minimum 2m 2mororminimum minimum10m 10m distances dependsononthe distances depends theuse use ofofthe thedevice deviceaccording according toto theinvention. the invention.AAdistance distancethat that is is too short too short is is not not interesting interesting as asthe theheat heatofofthe theflame flame also also expands expands upstream upstream andisthere and there not is not 30 reallyaa"non-heated 30 really “non-heatedzone" zone”ininsuch sucha acase. case.

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None of the None of the documents documentsJPJP3722410 3722410 B2,DEDE B2, 3907946 3907946 A1,A1, FR FR 2590001 2590001 A1 A1 and US2014/0363775 and US2014/0363775 A1A1 consider consider creating creating a non-heated a non-heated zone zone of at ofleast at least 50cm 50cm downstream downstream of the of the fluid fluid inlets. inlets. Nothing Nothing in these in these documents documents indicatesindicates that that it is it is possible possible or or desirable tobroadly desirable to broadlyoffset offsetthe theheat heat zone zone of the of the fluid fluid inlets. inlets. Thus, Thus, none none of these of these documents documents

5 would incite would incite offsetting offsetting atat least 50cm, least advantageously 50cm, advantageously at atleast 2m, least 2m,more more advantageously at advantageously at 2018256499

least least 10m, thezone 10m, the zoneto to be be heated heated of the of the combustible combustible fluid inlet. fluid inlet. Indeed, Indeed, introducing introducing such ansuch an

offsetting offsetting in in these these known deviceswould known devices would go against go against the objectives the objectives followed followed by these by these

devices. Furthermore, devices. Furthermore,these thesedistances distancesareare tootoo large large to to be be compatible compatible withwith the the devices devices

disclosed in disclosed in these different documents, these different documents, as such an as such anoffsetting offsetting would would damage damagethethe 10 robustness and/or the robustness and/or the compacity compacityof of the the heating heating devices devices described. described.

In In the the device according device according to to the the invention, invention, thethe firstand first andthethe second second pipespipes enable enable

to lead to the combustible lead the combustible fluid fluid andand the the combustive combustive fluid,fluid, separately separately to the to the combustion combustion head, head, even even ifif this this is is remote fromthethe remote from combustible combustible fluidfluid and and combustive combustive fluid inlets. fluid inlets. This therefore This therefore

enables to separate enables to separatethe thecombustion combustionandand combustible combustible fluidfluid inlets, inlets, which which must must be easily be easily

15 accessible from accessible from the the combustion combustion head,head, which which is the is the starting starting point point of the of the flame. flame.

Thefact The factthat thatthe thesecond second pipe pipe is housed, is housed, at partially, at least least partially, in the in thepipe, first first pipe, enables thecombustion enables the combustion headhead to betosupplied be supplied centrally centrally by theby the combustible combustible fluid and fluid and

peripherally bythe peripherally by thecombustive combustive fluid. fluid. Furthermore, Furthermore, this this enables enables the combustive the combustive fluid to fluid flow to flow

around thecombustion around the combustion head head in theinheat-emitting the heat-emitting tubethefrom tube from thefluid first first connection. fluid connection. 20 The fluids The fluids are are advantageously advantageously gases. gases. The The combustive combustive fluidis is fluid advantageously air. The advantageously air. Thecombustible combustible fluidcan, fluid can,forforexample, example, be be natural natural gasgas which which is a is a

gaseous mixtureofof hydrocarbons, gaseous mixture hydrocarbons,propane, propane,butane butaneororLPG LPG (liquified petroleum (liquified petroleumgas). gas). The fluid The fluid communications areadvantageously communications are advantageously sealed. sealed. The The first first andand second second

pipes pipes advantageously havesealed advantageously have sealedwalls. walls. 25 25 The heat-emitting The heat-emitting tube tube is is aa heat-emitting heat-emitting tube through radiation, tube through radiation, convection convection

and/or conduction. Heat and/or conduction. Heatemission emissionbybyradiation radiationparticularly particularly occurs whenthe occurs when theheat-emitting heat-emitting tube is tube is surrounded surroundedbybyan an environment environment that that is least is at at least partially partially transparent transparent to to infrared infrared

radiation, for example, radiation, for air.Heat example, air. Heatemission emission by convection by convection particularly particularly occursoccurs when when the heat-the heat-

emitting tube isis inin contact emitting tube contactwith witha fluid a fluid environment. environment. Heat Heat emission emission by conduction by conduction

30 particularly occurs 30 particularly occurswhen when theemitting the emittingtube tubeisisin in contact contact with with a a conduction heat conducting conduction heat conducting environment. environment. 5 5

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The means The means formoving for moving fluidenable fluid enabletotocreate createan anoverall overall fluid fluid movement ofan movement of an upstream direction towards upstream direction towardsaadownstream downstream direction,ininother direction, otherwords, words,from from thecombustive the combustive fluid inlet fluid inlet towards thefluid towards the fluidoutlet. outlet. The Themeans means for moving for moving fluidcomprise fluid can can comprise a ventilator. a ventilator.

Themeans The meansfor for moving moving fluidfluid can can be situated be situated in theinproximity the proximity of the of the combustive combustive fluidsoinlet, fluid inlet, so 5 as to push as to pushthe thecombustive combustive fluid, fluid, and/or and/or in the in the proximity proximity of fluid of the the fluid outlet, outlet, so to so as asdraw to draw the the 2018256499

fluid. fluid.

The heat-emitting The heat-emitting tube tubeis, is, for for example, arrangedessentially example, arranged essentiallyhorizontally horizontally to to enable enable a agood good distribution distribution of of heat. heat. The The heat-emitting heat-emitting tube tube can can also be also be arranged arranged vertically. vertically.

The heat-emitting The heat-emitting tube tube can can also also be be arranged arrangedtotoform forman anangle angleofofbetween between0°0° and and 90°90° with with

10 respect tothe respect to thevertical. vertical. The heating The heatingdevice deviceaccording accordingtotothe theinvention inventioncan canbebe called called “heatingtube" "heating tube” and in particular, and in particular, "heating “heatingtube tubewith withremote remote flame”. flame". It can It can alsoalso be called be called “radiant "radiant tube”. tube".

The combustion The combustion head, head, the first the first fluidfluid connection, connection, the second the second fluid connection, fluid connection,

the combustive the combustivefluid fluid inlet inlet and the combustible and the combustiblefluid fluid inlet inlet can be comprised can be comprisedinina adevice device 15 called “burner”. called "burner".

In In the the scope of the scope of the present presentdocument, document,thethe “non-heated "non-heated zone” zone" can can also also be be called “cold zone". called "cold zone”. In the scope In the scope ofofthe thepresent presentdocument, document, twotwo “fluid "fluid communication communication or or connection” elementscan connection" elements canbebeinindirect direct fluid fluid communication communication ororconnection, connection,ininother other words, words, 20 that they that are directly they are directly inin contact contact with with one one another, or in another, or in indirect indirect fluid fluidcommunication or communication or

connection, connection, ininother otherwords, words, that that there there areare intermediate intermediate elements elements betweenbetween them. them. The combustion The combustion head head and and the combustible the combustible fluid fluid inletinlet are advantageously are advantageously

separated separated byby a distance a distance of less of less than than 50m.50m.

The heating The heating device device may maycomprise comprise a casing, a casing, thethe firstfluid first fluid connection connection 25 comprises, 25 comprises, between between the combustive the combustive fluid fluid inletinlet and and the first the first pipe, pipe, a firstconnection a first connection part part

included included in in the casing and the casing andthe thesecond second fluidconnection fluid connectioncomprises, comprises,between between the the combustible fluid inlet combustible fluid inlet and the second and the secondpipe, pipe,a asecond second connection connection partpart included included in the in the

casing. Thecombustion casing. The combustion head head may bemay be neither neither totally totally nor nor partially partially includedincluded in the In in the casing. casing. In other words,the other words, thecombustion combustion head head is, advantageously, is, advantageously, situatedsituated outside outside of the casing. of the casing.

30 30 The inventors The inventors have havefound foundthat that the the fact fact of of having having the the combustion headtotally combustion head totally outsideofofthe outside thecasing, casing,enables enables to create to create a large a large offsetting offsetting between between theinlets the fluid fluid and inlets theand the 6 6

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start start of of the flame.This the flame. Thisalso also enables enables to place to place the casing the casing such such that that it is it is accessible easily easily accessible and/or thatit and/or that it is is installed installedstably, stably,while while really reallyfreeing freeing up up the the position of the position of start of the start of the the heated heated

zone,which zone, whichcancan be be in an in an inaccessible inaccessible place, place, for example, for example, up up high. high. The case The caseis is not not typically typicallyprovided providedtotosupport supporttemperatures temperaturesbeyond 60°C. The beyond 60°C. The 5 offsetting offsettingofofthe theflame flameenables enables to to avoid avoid damaging it. The damaging it. casing can The casing cancomprise compriseelectronic electronic 2018256499

components. The casing components. The casing can can comprise comprise aa pressure pressure switch. switch. The casing can The casing comprise aa can comprise solenoid valve. The solenoid valve. The casing casingcan cancomprise comprise elements elements enabling enabling to connect to connect the combustive the combustive

fluid inlet fluid inlet and the combustible and the combustible fluid fluid inlet inlet onto onto supply supply lines. lines. The casing The casing can comprise can comprise the the means formoving means for moving fluid. The fluid. Thetwo twoignition ignition cables cablesconnected connected from from oneone sideside to the to the ignition ignition

10 electrode can bebeconnected, electrode can connected, from from another another side, side, to ato a device device for actuating for actuating the remote the remote

ignition ignition means present means present in in thethe casing. casing. The The verification verification cable cable connected connected from from one sideone side to the to the

ionisation electrodecan ionisation electrode canbebe connected, connected, from from another another side, side, to to an outlet an outlet device device of the remote of the remote

flameverification flame verification means means present present in the in the casing, casing, for example, for example, an indicator an indicator light. light. The The ignition ignition

and verification cables and verification are advantageously cables are advantageously coated coated withwith a dielectric a dielectric and/or and/or a thermal a thermal

15 insulator providedtotoresist insulator provided resisthigh hightemperatures. temperatures. The heating device The heating device can canfurther further comprise comprise aa remote remoteignition ignition means, enabling to means, enabling to remotely igniteaaflame remotely ignite flameatatthe thecombustion combustion head.head.

In In the the scope of the scope of the present present document, document,"remote/remotely" “remote/remotely” can, can, forfor example, example,

mean fromthe mean from thecombustible combustiblefluid fluid inlet, inlet, from froma acasing casingincluding combustion including combustionand and combustible combustible

20 fluid inlets, fluid inlets,and/or and/or from a casing from a casingincluding includingthethe upstream upstream ends ends of theoffirst the first and second and second pipes. pipes. The remote The remoteignition ignitionmeans means enables enables an operator, an operator, for example, for example, in theinproximity the proximity of the of the combustion andcombustible combustion and combustible fluidinlets, fluid inlets, to to ignite ignitethe theflame flameatat the combustion the combustionhead, head, even even

whenthe when thecombustion combustionhead head is isremote remote from from it. it.

The remote The remoteignition ignition means cancomprise means can compriseanan ignitionelectrode ignition electrodeand andananignition ignition 25 cable 25 cable housed housed at least at least partially partially in first in the the first pipe pipe and and connected connected to the to the ignition ignition electrode. electrode.

In In an an embodiment embodiment ofofthe theinvention, invention, the the remote ignition means remote ignition comprisestwo means comprises two ignition ignition cables cables connected to the connected to theignition ignition electrode electrode and andhoused housedat at least least partiallyininthe partially the space between space between the the inner inner surface surface of first of the the first pipepipe and and the outer the outer surface surface of the of the second second pipe. pipe. The heating The heatingdevice devicecan canfurther furthercomprise comprisea aremote remote flame flame verificationmeans verification means 30 enables 30 enables to to remotely remotely verifythe verify thepresence presenceofofthe theflame flameemitted emittedby by the the combustion combustionhead. head.

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The remote The remoteflame flameverification verification means enablesananoperator, means enables operator,for for example, in the example, in the

proximity of the proximity of thecombustion combustionand and combustible combustible fluid inlets fluid inlets to verify to verify the existence the existence of a flame of a flame

at at the the combustion head. combustion head.

In In an embodiment an embodiment of the of the invention, invention, the the remote remote flameflame verification verification meansmeans

5 comprises comprises ananionisation ionisationelectrode electrodeand and a verificationcable a verification cableconnected connected to the to the ionisation ionisation 2018256499

electrode andhoused electrode and housed at least at least partially partially in in thethe firstpipe. first pipe. For example, For example, in in anan embodiment embodiment of theofinvention, the invention, the remote the remote flame verification flame verification

means comprises means comprises oneone single single verificationcable verification cableconnected connectedto to thethe ionisationelectrode ionisation electrodeand and housed housed at at least least partiallyininthethe partially space space between between the surface the inner inner surface of the of the first first pipe andpipe the and the

10 outer surfaceofofthe outer surface thesecond second pipe. pipe.

The combustion The combustion head head can can be mechanically be mechanically coupled coupled to thetofirst the first part part of the of the

heat-emitting tube. heat-emitting tube.

The mechanical coupling The mechanical coupling can can enable enable to to keep keep the the combustion combustionhead headatata a certain distancefrom certain distance fromanan inner inner surface surface of the of the first first part part of of the the heat-emitting heat-emitting tube. tube.

15 ItIt can, can, for for example, example, bebe achieved achieved through through rigid rigid radial radial rods, rods, for example for example three three radial radial rods, rods, spaced by 120°. spaced by 120°. This This enables enablestotokeep keepthetheflame flame emitted emitted by by thethe combustion combustion

head head ininthe theproximity proximityof of a central a central axis axis of of thethe heat-emitting heat-emitting tube tube and and in the in the direction direction of thisof this

axis, which axis, which is is particularly particularly useful useful if theifsecond the second pipe pipe is at is partially least at least flexible. partially flexible. In In an embodiment an embodiment of of thethe invention, invention, thethe combustion combustion head head is mechanically is mechanically

20 coupled to the coupled to the first first part partofofthe theheat-emitting heat-emittingtube tubeby by the the coupling coupling elements fixed to elements fixed to the the combustion head combustion head and and arranged arranged to able to be be able to slide to slide along along an an inner inner surface surface of the of the second second

pipe and/orananinner pipe and/or innersurface surface of of thethe heat-emitting heat-emitting tube. tube.

Thesecoupling These couplingelements elements slidingalong sliding alongthe theinner innersurface surfaceofofthe thesecond secondpipe pipe and/or of the and/or of theheat-emitting heat-emittingtube tube enable enable an easier an easier installation installation of the of the combustion combustion head. head.

25 25 In an embodiment In an embodiment of the of the invention, invention, the the heat-emitting heat-emitting tube tube comprises comprises a a section section provided provided to to be be disassembled. disassembled.

This canmake This can makethethe installation installation andand maintenance maintenance of the of the heating heating device easier. device easier.

In an embodiment In an embodiment of invention, of the the invention, the first the first pipepipe comprises comprises a section a section

provided to be provided to be disassembled. disassembled.

30 30 This canmake This can makethethe installation installation andand maintenance maintenance of the of the heating heating device easier. device easier.

The second The secondpipe pipecan canbebeprovided providedtotosupport supportaatemperature temperatureofofatat least least 300°C. 300°C. 8 8

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The flameexiting The flame exiting the the combustion combustionhead head cancan havehave a temperature a temperature of around of around

1100°C. Thesecond 1100°C. The second pipe pipe is is thereforeprovided therefore providedto to support support without without damage damage high high temperatures, advantageously temperatures, advantageouslyatatleast least300°C, 300°C,more more advantageously advantageously 600°C. 600°C. Likewise, Likewise, the the first pipe, first pipe,the theheat-emitting heat-emitting tube tube and the combustion and the combustionhead head are are provided provided to support to support a a 5 temperatureof temperature of at at least least300°C, 300°C, more advantageously600°C. more advantageously 600°C. 2018256499

In In an an embodiment embodiment ofofthe the invention, invention, the the second pipe comprises second pipe comprises aa metal. metal. Advantageously,the Advantageously, thesecond secondpipe pipecomprises comprises stainlesssteel. stainless steel. This can,for This can, for example, example, be be made made of 316Ti of 316Ti steel.steel.

In In an embodiment an embodiment of invention, of the the invention, the pipe the first first pipe is rigid. is rigid. It isItalso is also possible, possible,

10 while remaining while remaining in in the the scope scopeofofthe theinvention, invention, that that the the first first pipe pipecomprises at least comprises at least one one

flexible part. flexible part.

In In the scopeofofthethe the scope present present document, document, a pipe aispipe is “rigid” "rigid" if it cannot if it cannot be folded be folded

withoutrisk without risk of of being beingdamaged damaged and and in in particular, particular, without without risk ofrisk ofofloss loss of sealing sealing at the at the level level of its walls. of its walls.

15 In In an embodiment an embodiment of the of the invention, invention, the the second second pipe pipe is at is at least least partially partially

flexible. flexible.

In In the the scope scope ofofthe thepresent present document, document, a is a pipe pipe "atisleast “at least partially partially flexible”, flexible", if it if it

can befolded can be foldedwhile while keeping keeping a fluid a fluid connection connection function function and without and without risk ofrisk of damaged, being being damaged, in in particular withoutrisk particular without riskofofloss lossofofsealing sealing at the at the level level of walls. of its its walls. For example, For example, a pipe a pipe

20 having an outer having an outer diameter diameter and andwhich whichcould couldbebefolded foldeduntil until reaching reaching aa bend bendradius radiusequal equaltoto at at least ten times least ten timesits its outer outerdiameter diameter while while keeping keeping a fluid a fluid connection connection function function and without and without

risk risk of of being damaged being damaged is considered is considered asleast as "at “at least partially partially flexible”. flexible".

A pipe A pipeatatleast least partially partially flexible flexible can also be can also bequalified qualifiedasas"semi-flexible". “semi-flexible”. In In an an embodiment embodiment ofofthe theinvention, invention,the thefirst first pipe pipe presents presents an angle and an angle andthe the 25 second 25 second pipe pipe is is curved. curved.

The first pipe The first can,for pipe can, for example, example, comprise comprise a bent a bent joining joining partthanks part and and thanks to its to its

flexibility, thethe flexibility, second secondpipe pipe is is capable of mainly capable of mainly following following the the shape shapeof ofthethe firstpipe. first pipe. Furthermore, the Furthermore, the firstpipe first pipecan can comprise comprise a first a first angle angle in ainfirst a first direction direction of of rotation rotation following following

the movement the movement of of thefluids the fluids and andaasecond second angle angle in in aa second second directionofofrotation direction rotation following following 30 the 30 the movement movement of fluids. of the the fluids. ThisThis enables enables to create to create an offsetting, an offsetting, perpendicular perpendicular to theto the

overall direction overall direction of of flow flow of fluids. of the the fluids. 9 9

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In In an embodiment an embodiment of the of the invention, invention, the second the second pipe ispipe more is more flexible flexible than the than the

first pipe. first pipe.

In In an embodiment an embodiment of invention, of the the invention, the heat-emitting the heat-emitting tube andtube and the the first pipefirst pipe

formpart form part of of aa same same piece. piece. It Itisisalso alsopossible, possible, while while remaining remaining in the in the scopescope of theofinvention, the invention, 5 that they that aredifferent they are different pieces. pieces. 2018256499

formpart form partofofaapart partwhich which could could be called be called “extended "extended heat-emitting heat-emitting tube”. tube". The The first first pipe canpipe can thus be thus be considered consideredasasthethepart partofofthis thispart partwhich whichgoes goes up up to the to the upstream upstream end end of theof the combustion head. combustion head. It is It is also also possible possible thatthat the the heat-emitting heat-emitting tube tube and and the the pipe first first are pipeinare the in the

10 direction extensionofofone direction extension one another. another.

Furthermore, the invention Furthermore, the invention proposes proposesa aheating heatingequipment equipmentto to decontaminate decontaminate

earth, comprisingthethe earth, comprising heating heating device device according according to thetoinvention. the invention. In addition, the In addition, the invention invention proposes proposes a heating a heating equipment equipment for industrial for industrial

installation installationsuch such as as aa furnace, furnace, a a tunnel tunnel furnace or aa chemical furnace or chemicalbath bathand and comprising comprising thethe

15 heating deviceaccording heating device according to the to the invention. invention.

Additionally, the Additionally, theinvention proposes invention proposesa aheating heatingequipment equipment for for aa sauna sauna comprising theheating comprising the heating device device according according to thetoinvention. the invention. Accordingtotoa asecond According second aspect, aspect, the the invention invention proposes proposes a heating a heating methodmethod

comprising thesteps comprising the steps of:of:

20 • providing providing aaheating heatingdevice device according according to the to the invention, invention,

• arranging the heating arranging the heating device devicesuch such thatthetheheat-emitting that heat-emittingtube tube is is at at least least

partially partially in inaazone to be zone to heated, be heated,

• connecting fluidically the connecting fluidically thecombustive combustive fluid fluid inlettotoa acombustive inlet combustive fluid fluid supply, supply,

• connecting fluidically the connecting fluidically combustiblefluid the combustible fluid inlet inlet to to aacombustible combustible fluid fluid

25 supply, 25 supply,

• starting starting the means the means forfor moving moving fluid, fluid, andand

• starting starting the flameatat the the flame thecombustion combustion head. head.

Thus, the zone Thus, the zonetotobebeheated heated is is separated separated by by a distance a distance of least of at at least 50cm, 50cm,

advantageouslyatatleast advantageously least 2m, 2m,more moreadvantageously advantageouslyat at least10m least 10m from from thethe combustible combustible fluid fluid

30 inlet.InInthe 30 inlet. thescope scope of the of the present present document, document, a "zone ato“zone to beisheated” be heated" is a zone a zone such such that it is that it is

10 10

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desired, thatthe desired, that theelements elements present present in this in this zone,zone, in particular, in particular, solidsolid or liquid or liquid elements, elements, are are heated heated byby theheating the heating device. device.

The advantages The advantages mentioned mentioned for for thethe device, device, areare applied applied mutatis mutatis mutandis mutandis to to

the method. the method.

5 2018256499

11 11

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BRIEF BRIEF DESCRIPTION OFTHE DESCRIPTION OF THEFIGURES FIGURES Other characteristics and Other characteristics andadvantages advantages of the of the invention invention will will appear appear upon upon

reading thedetailed reading the detailed description description which which follows, follows, for understanding for the the understanding of whichofwill which will refer to refer to

the appended the figures among appended figures among which: which:

5 -- figure figure1 1 illustrates a aheating illustrates heating device in an device in an embodiment embodiment of present of the the present 2018256499

invention, and invention, and

-- figure figure 2 2 illustrates illustrates three three heating devicesarranged heating devices arranged to decontaminate to decontaminate a heap a heap

of of earth, earth, in in an an embodiment of the embodiment of the invention. invention.

10 EMBODIMENTS EMBODIMENTS OFOFTHE THEINVENTION INVENTION The present The present invention invention is is described described with with specific specificembodiments andreferences embodiments and references to the to figures, but the figures, but the the invention inventionisisnot notlimited limitedbybythese. these.TheThe drawings drawings or figures or figures defined defined are are only schematic only schematic andand are are not not limiting. limiting.

In In the the context context of of the the present document,the present document, theterms terms “first” and "first" and"second" “second”are are 15 only only used to differentiate used to differentiate the thedifferent differentelements elementsand and do do not not involve involve order order between these between these

elements. elements.

In In the the figures, figures, identical identical or or similar similar elements canhave elements can have thethe samesame references. references.

Figure Figure 1 illustrates aa heating 1 illustrates device 11 in heating device in an anembodiment embodiment of present of the the present invention. invention. The The heating heating device device 1 1 comprises comprises aa combustion combustionhead head30 30 provided provided to to emit emit a a flame flame

20 in the proximity in the proximity of of its its downstream downstreamend end34. 34.The The combustion combustion headhead 30 comprises, 30 comprises, advantageously, in the advantageously, in the proximity proximity of upstream of its its upstream end, aend, a central central combustible combustible fluid fluid inlet andinlet and

peripheral peripheral combustive fluid inlets combustive fluid inlets31.31. The combustion The combustionhead head 30 30 comprises, advantageously, comprises, advantageously,

an injector, calibrated an injector, calibrated to to lead the combustible lead the combustiblefluid fluid atat a acertain certainpressure. pressure.A mixture A mixture between thecombustion between the combustionandand combustible combustible fluids fluids is is made made in the in the combustion combustion headhead 30. The 30. The

25 combustion 25 combustion headhead 30 also 30 also comprises, comprises, advantageously, advantageously, a Venturi a Venturi tubea and tube and flamea holder. flame holder. The combustion The combustionhead head 30 30 also also comprises, comprises, advantageously, advantageously, an ionisation an ionisation electrode electrode 32.32. TheThe

combustion head3030also combustion head alsocomprises, comprises, advantageously, advantageously, an an ignitionelectrode ignition electrode33. 33.Contrary Contrarytoto the illustration the illustration in in figure figure 1, 1, the the combustion head combustion head 30 possibly 30 can can possibly have a have mainlyacylindrical mainly cylindrical shape. shape.

30 30 Theheating The heating device device 1 further 1 further comprises comprises a combustive a combustive fluid11inlet fluid inlet and 11 and a first a first fluid connection, fluid connection, connecting fluidically the connecting fluidically thecombustive combustive fluid fluidinlet inlet1111and andthe thecombustion combustion 12 12

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head 30.The head 30. The firstfluid first fluidconnection connection comprises comprises a first a first pipe pipe 13.first 13. The The first fluidfluid connection connection and and the first the first pipe pipe13 13are are therefore thereforeintended intended to to receive receive the the combustive fluid. The combustive fluid. combustive The combustive

fluid isis typically fluid typicallyair. air.The The first firstpipe 1313isisadvantageously pipe rigid. The advantageously rigid. first pipe The first pipe 13 can 13 can

comprise several comprise several parts, parts, in in particular, particular, straight-lined straight-lined parts parts andand at least at least one one part part enabling enabling it to it to

5 have at least have at least one onecurved curvedpart. part.The The firstpipe first pipe1313can, can,for forexample, example, comprise comprise an angle, an angle, 2018256499

several angles,a abend, several angles, bend, several several bends, bends, etc. etc.

The first The first pipe pipe13 13 can can comprise oneorormore comprise one moresection(s) section(s)provided providedtotobebeeasily easily removed removed orordisassembled. disassembled. Such Such a section a section can, can, forfor example, example, be be fixed fixed by by flanges flanges or or straps straps

to the to the remainder remainderof of thethe first first pipe pipe 13.13. ThisThis can can be be useful useful to access to access theof inside the inside of the first the first 10 pipe 13during pipe 13 duringthe theinstallation installationororfor formaintenance. maintenance. The first fluid The first fluid connection cancomprise connection can comprise one one or more or more section(s) section(s) provided provided to be to be easily easily removed or disassembled. removed or disassembled. The heating The heatingdevice device1 1further furthercomprises comprises a combustible a combustible fluid fluid inlet2121andand inlet a a second fluid connection second fluid connectionconnecting connecting fluidicallythethecombustible fluidically combustible fluid fluid inlet inlet 21 21 andand the the

15 combustion head30. combustion head 30.The The second second fluidconnection fluid connectioncomprises comprises a second a second pipepipe 23, 23, which which is at is at

least least partially partiallyhoused housed in in the the first firstpipe 13.13.The pipe Thefirst 13 13 first and andthe thesecond second 23 23 pipes can be pipes can be coaxial. coaxial. The secondfluid The second fluid connection connectionand andthethe second second pipepipe 23 are 23 are therefore therefore intended intended to to

receive the combustible receive the combustible fluid. fluid. The combustiblefluid The combustible fluid can, can, for for example, benatural example, be natural gas, gas,aa gaseous mixtureofof hydrocarbons, gaseous mixture hydrocarbons,propane, propane,butane butaneororLPG. LPG. 20 In In an embodiment an embodiment of of the the invention,the invention, thesecond second pipe pipe 23 23 is at is at least least partially partially

flexible. The flexible. The second pipe23 second pipe 23can canthus thus be be present present in the in the first first pipe pipe 13,13, even even if the if the first first

pipe pipe 13 13 comprises anangle, comprises an angle, several several angles, angles, a a bend, several bends, bend, several etc. In bends, etc. Inan anembodiment embodiment

of the invention, of the invention,the thesecond second pipepipe 23athas 23 has at one least least onepart rigid rigid andpart and one at least at least one flexible flexible

part. part. In In an embodiment an embodiment of the of the invention, invention, the second the second pipe 23 pipe 23 flexible is more is more than flexible than the first the first

25 pipe13. 25 pipe 13. Whether Whether it itisisflexible flexibleororrigid, rigid, the the second second pipe pipe 23 advantageously 23 is is advantageously capablecapable

of supporting of supportinga atemperature temperature of atofleast at least 300°C. 300°C. WhetherWhether it is flexible it is flexible or rigid,orthe rigid, the second second pipe pipe 23 advantageouslycomprises 23 advantageously comprises a metal. a metal. Whether Whether it is itflexible is flexible or rigid, or rigid, thethe second second

pipe pipe 23 23 is is advantageously flameproof. The advantageously flameproof. The stainless stainless steel steel comprised comprised in in the the second second pipe pipe 23 23

30 can 30 can forfor example example be 316Ti be 316Ti steel. steel. TheThe stainless stainless steel steel comprised comprised in the in the second second pipepipe 23 can 23 can

13 13

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for example for comprise16.5 example comprise 16.5toto18.5% 18.5%of of Cr,Cr, 10.5 10.5 to to 13.5% 13.5% of Ni, of Ni, 2.02.0 to to 2.5% 2.5% of Mo, of Mo, lessless

than 0.7% than 0.7%ofof TiTi and and Fe.Fe.

IfIf ititisisatatleast partially least flexible, partially thethe flexible, second second pipe pipe 23 canpossibly 23 can possibly comprise comprise at at

least least one rigid section one rigid sectionand andatatleast leastone one flexiblesection. flexible section. 5 The heating The heatingdevice device1 1further furthercomprises comprisesa heat-emitting a heat-emitting tube tube 40. 40. TheThe heat- heat- 2018256499

emitting tube4040has emitting tube has a firstpart a first part4141ininfluid fluidcommunication communicationwith with the first the first fluid fluid connection, connection, for for

example, example, to to be be in direct in direct fluid fluid communication communication with thewith firstthe first pipe 13. pipe This 13. firstThis part first 41 ispart 41 is

provided provided to to receive receivethe thecombustion combustion head head 30 30 and a flame and a flame emitted emitted by the combustion by the combustion head 30. The head 30. Theheat-emitting heat-emittingtube tube4040has hasa a second second part part 42 42 connected connected fluidically fluidically to to a a fluid fluid

10 outlet outlet 50. 50. The fluid outlet The fluid outlet 50 50 enables enablestoto release release fluids fluids from from thethe heat-emitting heat-emitting tube tube 40. 40.

In In an embodiment an embodiment of the of the invention, invention, the downstream the downstream endfirst end of the of the first pipe 13 pipe is 13 is joined to joined to the the downstream end downstream end of of thethe heat-emitting heat-emitting tube tube 40. 40. The The downstream downstream end end of theof the second pipe second pipe 23 23 is is connected connected with with the combustible the combustible fluid of fluid inlet inlet theofcombustion the combustion head 30.head 30.

In In an embodiment an embodiment of the of the invention, invention, the heat-emitting the heat-emitting tube tube 40 and 40 andpipe first first13pipe 13 15 form part form part of of an an integral integral piece which could piece which couldbebecalled called"extended “extendedheat-emitting heat-emittingtube". tube”.The The heat-emitting tube4040 heat-emitting tube is is thus thus thethe direct direct continuation continuation of the of the first first pipe pipe 13. 13. In other In other words, words, the the

first pipe first pipe 13 13 can thusbebeconsidered can thus considered as forming as forming part part of extended of the the extended heat-emitting heat-emitting tube andtube and the second the second pipe pipe 23 23 as as being being at least at least partially partially housed housed in extended in the the extended heat-emitting heat-emitting tube. tube. In In an an embodiment embodiment ofofthe theinvention, invention,the the combustion combustionhead head 30 30 is is mechanically mechanically

20 coupled coupled toto the the heat-emitting heat-emitting tubetube 40,example 40, for for example to an to an inner inner ofsurface surface of part its first its first 41. part 41.

This mechanical This mechanicalcoupling coupling cancan be achieved be achieved by thebycoupling the coupling elements elements 35 fixed35 to fixed the to the combustion head combustion head 3535 and and slidingover sliding overthetheinner innersurface surfaceofofthe theheat-emitting heat-emittingtube tube40. 40.This This can be, for can be, for example, three rigid example, three rigidradial radialrods spaced rods spacedby by120°. 120°.This Thismechanical mechanical coupling coupling can can

enable an approximative enable an approximativecentring centringof of the the combustion combustionhead head3030 in in theheat-emitting the heat-emittingtube tube40. 40. 25 The 25 The fact fact that that the the coupling coupling elements elements 35 slide 35 slide over over the the inner inner surface surface of the of the heat-emitting heat-emitting

tube 40 tube enablesananeasier 40 enables easierinstallation installation of of the the combustion head3030 combustion head andand of of these these coupling coupling

elements elements 3535 in in the the heat-emitting heat-emitting tubetube 40. 40.

The heat-emitting The heat-emitting tube tube 40 40 can cancomprise comprise one one or or more more section(s) section(s) provided provided to to be easily removed be easily ordisassembled. removed or disassembled.Such Such a section a section can, can, forexample, for example,be be fixed fixed byby flanges flanges

30 30 or or strapstotothe straps theremainder remainderof of theheat-emitting the heat-emittingtube tube40. 40.This Thiscan canbebe useful useful foraccessing for accessing the inside the inside of of the the heat-emitting heat-emittingtube tube 40 40 during during installation installation or or forfor maintenance. maintenance.

14 14

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Furthermore, the first Furthermore, the first part part 41 41 of of the the heat-emitting heat-emitting tube tube 40 can comprise 40 can comprisea a refractory material.For refractory material. Forexample, example, the the inner inner surface surface of theoffirst the first part part 41 of41 theofheat-emitting the heat-emitting tube 40 tube 40can canbebe covered covered with with a refractory a refractory material material in a of in a zone zone the of thepart first first41part 41 of of the the heat- heat- emitting tube4040provided emitting tube providedto to receive receive the the flame. flame.

5 The heating The heatingdevice device11further further comprises comprisesmeans meansforfor moving moving fluid fluid 60,enabling 60, enabling 2018256499

to create to create aa movement offluid movement of fluid between: between:

• the the combustive combustive fluid fluid inlet1111 inlet andand the the combustion combustion head 30head 30first via the via the first fluid fluid

connection, connection, and and

• the the first first part part 41 of the 41 of the heat-emitting heat-emittingtube tube 40 40 and and the second the second part 42part 42 of the of the

10 heat-emitting tube40. heat-emitting tube 40. This correspondstotoananoverall This corresponds overall movement movementof of fluidfrom fluid fromthethecombustive combustive fluid fluid

inlet inlet11 11(upstream) (upstream) towards thefluid towards the fluidoutlet outlet 50 50(downstream). (downstream).TheThe means means for moving for moving

fluid 60 fluid canbebepresent 60 can present nearnear the combustive the combustive fluid11inlet fluid inlet 11 near and/or and/or the near fluid the fluid50.outlet outlet 50. The means The meansforfor moving moving fluid6060enable fluid enable to to create create an an overpressure overpressure at the at the combustive combustive fluidfluid

15 inlet inlet 11 11 with with respect tothe respect to thefluid fluid outlet outlet 50. 50. The Themeans means for for moving moving fluid fluid 60 enable 60 enable to aavoid a to avoid

flashback. flashback.

A large A large amount ofthe amount of the combustive combustivefluid fluid passes passesinto into the the heat-emitting heat-emitting tube tube 40 40

around thecombustion around the combustion head head 30.fluid 30. The Thecirculating fluid circulating in the in the heat-emitting heat-emitting tube 40 tube 40 is heated is heated

by the flame by the flame emitted emitted by by the the combustion combustionhead. head.This This heats heats the the heat-emittingtube heat-emitting tube 4040 itself, itself,

20 whichthus which thusemits emits heat heat by by radiation, radiation, conduction conduction and/or and/or convection. convection.

In In an embodimentofofthe an embodiment theinvention, invention, the the heating heating device device 11 comprises comprises a a casing 70. The casing 70. casing 70 The casing 70 groups groupstogether togethertypically typically several several elements whichmust elements which mustbebeeasily easily accessible by an accessible by anoperator operatorand andcannot cannot be be exposed exposed to high to high temperatures. temperatures. The casing The casing 70 70 can comprisemeans can comprise meansforfor moving moving fluid60. fluid 60.The The casing casing 70 70 cancan comprise comprise the the upstream upstream ends ends

25 of ofthe 25 thefirst first 13 13 and of the and of the second 23pipes. second 23 pipes. The Thecombustion combustion head head 30 30 is is neitherpartially neither partially nor nor fully ininthe fully thecasing casing 70. 70.

The secondpipe The second pipe2323can canbebe housed housed in the in the first pipe first pipe 13 13in in the the whole length of whole length of the second the pipe 23 second pipe 23 between betweenthe thecasing casing7070and andthe thecombustion combustion head head 30.30.

The first The first fluid fluidconnection connection comprises, betweenthe comprises, between thecombustive combustive fluidinlet fluid inlet11 11 30 and 30 and thethe firstpipe first pipe 13, 13, a firstconnection a first connection part part 16.16. This This firstconnection first connection part part 16 16 can can be be

15 15

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included in the included in the casing casing 70, 70, can can bebemetallic metallicand/or and/orcan canbebe bended. bended. ThisThis first first connection connection

part part 16 cancomprise 16 can comprise several several parts. parts.

In In an an embodiment embodiment ofofthe theinvention, invention,aalength length17 17ofofthe the first first pipe pipe 13 13 between between

the first the firstconnection connectionpart part1616and andthe thecombustion combustion head 30 is head 30 is at at least least50cm, 50cm, advantageously advantageously

5 at at least least2m, 2m, more more advantageously at least advantageously at least 10m. 10m. 2018256499

The second The secondfluid fluidconnection connectioncancan comprise, comprise, between between the combustible the combustible fluid fluid inlet inlet21 21 and and the secondpipe the second pipe23, 23,a asecond second connection connection partpart 26.26. This This second second connection connection

part part 26 26 can beincluded can be includedininthe thecasing casing70, 70,can can be be metallic metallic and/or and/or cancan be bended. be bended. This This

second connectionpart second connection part26 26can cancomprise compriseseveral severalparts. parts. 10 In In an embodimentofofthe an embodiment theinvention, invention, aa length length 27 of the 27 of the second second pipe pipe 23 23 between thesecond between the second connection connection partpart 26 26 and and the combustion the combustion head head 30 30 least is at is at 50cm, least 50cm, advantageouslyatatleast advantageously least 2m, moreadvantageously 2m, more advantageouslyat at least10m. least 10m. In In an an embodiment embodiment ofofthe theinvention, invention,the the ignition ignition electrode electrode 33 33 is is connected to connected to

two ignition two ignition cables cableshoused housed at least at least partially partially in the in the first first pipe pipe 13 and 13 and outside outside of theof the second second

15 pipe, pipe, and whichare and which arethemselves themselves connected connected to atodevice a device for for actuating actuating the the remote remote ignition ignition

means presentin inthethe means present casing casing 70.70. TheThe ignition ignition electrode electrode 33,33, thethe ignitioncables ignition cables andand the the

device for actuating device for actuating the the remote remoteignition ignitionmeans means form form partpart of aofremote a remote ignition ignition meansmeans

enabling toignite enabling to ignite the theflame flameremotely, remotely, forfor example example from from the casing the casing 70. 70. In In an an embodiment embodiment ofof theinvention, the invention,the theionisation ionisation electrode electrode 32 is connected 32 is connected

20 to aa verification to verification cable housed cable housed at at leastpartially least partiallyininthe thefirst first pipe 13and pipe 13 andoutside outside of of thethe second second

pipe, pipe, and whichisis itself and which itself connected to an connected to anoutlet outlet device deviceofofthe theremote remoteflame flame verification verification

means, present means, present in in thethe casing casing 70. 70. The The ionisation ionisation electrode electrode 32, the32, the verification verification cable cable and theand the

outlet outlet device device of of the the remote remote flame verification means flame verification means form form part part of of aa remote flame remote flame verification means verification enabling to means enabling to verify, verify, remotely, remotely, the the presence of the presence of the flame, flame, for for example, example, 25 from 25 from thethe casing casing 70. 70.

Thankstoto the Thanks the first first 13 13and and second 23 pipes, second 23 pipes, the the combustion head3030and combustion head and the the

combustible fluidinlet combustible fluid inlet 21 21can canbebe separated separated by a by a distance distance of at of at least least 50cm, 50cm, advantageously advantageously

2m, more 2m, moreadvantageously advantageously 10m. 10m. Likewise, Likewise, thanks thanks to the to the first1313and first and second second 23 pipes, 23 pipes, the the

combustion head3030and combustion head and thecombustive the combustive fluidinlet fluid inlet 11 11 can can be be separated separatedbybyaadistance distanceof of at at 30 least 50cm, 30 least 50cm,advantageously advantageously2m, 2m, more more advantageously advantageously 10m.10m. Likewise, Likewise, thanks thanks to the to the

16 16

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first 1313and first andsecond second 23 23 pipes, pipes, the thecombustion head30 combustion head 30and andthe thecasing casing7070can canbebeseparated separated by by a a distance distance of of at atleast 50cm, least 50cm,advantageously advantageously 2m, moreadvantageously 2m, more advantageously 10m. 10m.

Figure Figure 2 illustrates three 2 illustrates three heating heating devices 1 arranged devices 1 arrangedtotodecontaminate decontaminate a a heap of earth heap of earth 100 in an 100 in embodiment an embodiment of of theinvention. the invention.For Forreasons reasonsofofclarity, clarity, the the elements elements

5 illustrated illustrated in in figure figure22 are are not not to to scale andcertain scale and certainelements elements of the of the heating heating devices devices 1 are 1not are not 2018256499

illustrated. illustrated.Furthermore, theemitting Furthermore, the emittingtubes tubes 40 40 being being bended bended in the in theofheap heap of100 earth earth 100 in the in the

situation situation illustrated illustrated in infigure figure2, 2,the thefluid fluidoutlets outlets50 50are are not not represented. represented.

The heap The heapofofearth earth100 100must mustbebe decontaminated, decontaminated, in other in other words, words, that that it itmust must be heatedsoso be heated as as to to evaporate evaporate pollutants pollutants present present inside. inside. The heating The heating devices devices 1 according 1 according to to 10 the invention the invention are are installed, installed, advantageously, suchthat advantageously, such that the thecombustive combustive fluidinlet fluid inlet 11, 11, the the combustible fluidinlet combustible fluid inlet21, 21,the thefirst first connection connection part part 16,16, the the second second connection connection part 26,part the 26, the

casing casing 70 70 (figure (figure1), 1),thethe fluid fluid outlet outlet5050 (figure 1) and (figure 1) andthe the means means forformoving moving fluid 60 fluid 60 (figure (figure 1) 1) are are outside ofthe outside of theheap heapof of earth earth 100. 100. The The heating heating devices devices 1 according 1 according to to the invention the inventionare areinstalled, installed,advantageously, advantageously,such such that that at at least least oneofpart one part theof the heat-emitting heat-emitting

15 tube 40 tube 40are areininthe theheap heapof of earth earth 100. 100.

In In each heating device each heating device 1, 1, the the combustion head3030isisadvantageously combustion head advantageously placed placed

in in the the proximity of the proximity of theplace placewhere where the the heating heating device device 1 enters 1 enters into into the theofheap heap earth of earth 100, 100,

such that the such that the flame flame emitted emitted by by the the combustion combustionhead head 30 30 is is in in theheap the heap of of earth earth 100. 100. TheThe

combustion head combustion head 30 therefore 30 can can therefore be placed be placed in theofheap in the heap earth of earth 100 100 orofoutside or outside it. of it. 20 The heapofofearth The heap earth 100 100can canhave havea aheight heightofof6m, 6m,aalength lengthof of 40m 40mand anda adepth depth of of 8m. Althoughonly 8m. Although onlythree threeheating heatingdevices devices 1 1 are are illustrated in illustrated in figure figure 2, 2, such such aa heap heapofof earth earth 100 canbebe 100 can decontaminated decontaminated by sixty by sixty heating heating devicesdevices 1, of the 1, of which which the emitting emitting

tubes4040are tubes aredistributed distributed over over thethe length, length, the the width width andheight and the the height of theof theofheap heap earthof100. earth 100. Theemitting The emitting tubes tubes 40 installed 40 are are installed essentially essentially horizontally horizontally in the situation in the situation illustrated illustrated in in 25 figure 25 figure 2, 2, butbut they they could could be installed be installed essentially essentially vertically vertically or along or along whichever whichever directiondirection with with respect tothe respect to thevertical. vertical. In In the example the example illustrated illustrated in in figure figure 2, 2, in in thethe firstheating first heating device device 1a, 1a, whichwhich is is installed in the installed in the proximity proximityofofthe theground, ground, the the first first pipe pipe 13a,13a, has has no no However, bend. bend. However, in the in the second and second and third third heating heating devices devices 1b,the 1b, 1c, 1c,first the first pipe pipe 13b,has 13b, 13c, 13c, has abend a first first14b, bend14c14b, 14c

30 and 30 and a second a second bendbend 15b,15b, 15c.15c. The The whole whole of these of these two curves two curves 14b, 14b, 15b 15b or or 14c, 14c, 15c enables 15c enables

the second the andthird second and third heating heating devices devices 1b, 1b, 1c 1c to to have, have, from from upstream to downstream, upstream to downstream,a afirst first 17 17

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horizontal part, aa vertical horizontal part, vertical part part and and aasecond second horizontal horizontal part. part. TheThe first first andand second second horizontal horizontal

parts parts enable enable a horizontal movement a horizontal betweenthe movement between theinlets inlets 11b, 11b, 21b, 21b, 11c, 11c, 21c 21c and the and the combustion head combustion head 30b, 30b, 30c. 30c. This This horizontaloffset horizontal offsetcan, can,for forexample, example,bebe between between 0.5 0.5 and and

10m, advantageously 10m, advantageously around around 3m.3m. The The vertical vertical part part enables enables a vertical a vertical offsetbetween offset between thethe

5 inlets inlets11b, 11b,21b, 21b, 11c, 11c, 21c 21c and the combustion and the combustionhead head 30b, 30b, 30c. 30c. This This verticaloffset vertical offset can, can, for for 2018256499

example, bebetween example, be between0.5 0.5and and20m, 20m, advantageously advantageously around around 1.2m. 1.2m.

In In an application ofof the an application the heating heating device device1 1 toto decontaminate decontaminate aa heap of heap of earth earth 100, all the 100, all combustivefluid the combustive fluid inlets inlets 11a, 11b, 11c 11a, 11b, 11candand all all thethe combustible combustible fluid fluid

inlets inlets 21a, 21b,21c 21a, 21b, 21care are accessible accessible by aby a user user atlevel at the the level of theofground, the ground, in words, in other other words, at at 10 the bottom the bottomofofthe theheap heap of earth of earth 100.100. In anInapplication an application of theofinvention, the invention, to decontaminate to decontaminate a a heap heap ofofearth earth100, 100, allthe all thecombustive combustive fluid fluid inlets inlets 11a, 11a, 11b, 11b, 11c 11c andthe and all all combustible the combustible fluid fluid

inlets inlets 21a, 21b, 21c 21a, 21b, 21care areapproximatively approximatively in one in one same same horizontal horizontal plane. plane.

A heating A heating device device 11 according accordingto to the the invention invention can also be can also used for be used for heating heating a a

sauna, soasastotomove sauna, so movethethe combustion combustion headhead 30,other 30, in in other words, words, the starting the starting point point of the of the

15 heating, fromthe heating, from thefluid fluidinlets inlets 11, 11, 21 21and andpotentially potentiallythe thecasing casing 70.70.

A heating A heating device device11 according accordingtotothe theinvention inventioncan canalso alsobebeused used forfor heating heating

industrial industrial installations, installations, for for example, fora afurnace, example, for furnace, a tunnel a tunnel furnace furnace or a or a chemical chemical bath. In bath. In

the case the caseofofaachemical chemical bath, bath, it it isisadvantageous advantageous relative relative to safety to the the safety that operators that operators have tohave to approach from approach from the the fluid fluid inlets inlets 11,11, 21 21 and and potentially potentially the casing the casing 70,notbut 70, but be not be approached approached

20 fromthe from thechemical chemical bath. bath.

In the case In the caseof ofa tunnel a tunnel furnace, furnace, it isit particularly is particularly interesting interesting thatthat the the

combustion head combustion head 30 the 30 and andheat-emitting the heat-emitting tube 40tube 40the are in aretunnel in thefurnace tunnel and furnace andtoparallel to parallel

the axis the axis of of the thetunnel tunnelfurnace furnace to to enable enable a heating a heating of theofwhole the whole of the furnace. of the tunnel tunnel furnace. It is It is also particularly interesting also particularly interestingthat thatthethe fluidinlets fluid inlets11,11, 21 21 and and potentially potentially the casing the casing 70 are 70 are

25 outside 25 outside of of thetunnel the tunnelfurnace furnace and and protected protected by by its its heat, heat, ininorder ordertotonot notheat heatup. up.Using Using a a

bend bend inin the thefirst first pipe pipe 13 13 enables enablesto toplace place thethe fluid fluid inlets11, inlets 11,2121 andand potentially potentially the the

casing 70,just casing 70, justoutside outsideofofthethe tunnel tunnel furnace, furnace, outside outside of axis of its its axis and protected and protected by its by its walls, walls,

while placing while placing the the combustion head3030and combustion head and theheat-emitting the heat-emittingtube tube4040ininthe thetunnel tunnelfurnace furnace and parallel to and parallel to the the axis axisof of the the tunnel tunnelfurnace. furnace. 30 30 A heating A heatingdevice device 1 according 1 according to invention to the the invention canbealso can also usedbe in used in a situation a situation

wherethe where thezone zone to to be be heated heated has risks has risks for fluid for the the fluid inlets inlets 11, 11, 21 potentially 21 and and potentially the the 18 18

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casing 70. This casing 70. This can can be bethe thecase caseofofa ahall hallwhere wherethethe atmosphere atmosphere is corrosive. is corrosive. It isthus It is thus interesting to place interesting to placethe thefluid fluidinlets inlets 11, 11,2121and and potentially potentially thethe casing casing 70, 70, outside outside of theofhall the hall and the combustion and the combustionhead head3030atatthe thehall hall entrance. entrance.

In In other words,thethe other words, invention invention relates relates to ato a heating heating devicedevice 1, or heating 1, or heating tube, tube, 5 wherein a acombustive wherein combustive fluidfluid inletinlet 11,11, respectively respectively the combustible the combustible fluid 21, fluid inlet inletis21, is 2018256499

connected to aa combustion connected to combustionhead head 30 30 viavia a first pipe a first pipe 13, 13, respectively respectively aa second pipe 23, second pipe 23, the the second pipe second pipe 23 23 being being housed housed at least at least partially partially in theinfirst the first pipepipe 13.this 13. In In this heating heating devicedevice 1, 1, the combustion the combustionhead head3030 is is remote remote by by at least at least 50cm 50cm from from the combustible the combustible fluid fluid inletinlet 21, 21,

which enables which enablestotocreate createa a"cold “coldzone" zone”between between thethe two. two. TheThe first first 1313 andand the the second second 23 23 10 pipes enabletotolead pipes enable leadthe thecombustible combustible fluidandand fluid thethe combustive combustive fluidfluid separately separately to the to the

combustion head30, combustion head 30,even evenififit it is isremote remote from from the the combustible combustible fluid fluid21 21and and the thecombustive combustive

fluid 11 inlets. fluid 11 inlets.

The present The present invention invention has hasbeen been described described withwith respect respect to specific to specific embodiments, which embodiments, which have have a purely a purely illustrative illustrative value, value, andand mustmust notconsidered not be be considered as as 15 limiting. limiting. Generally, thepresent Generally, the present invention invention is not is not limited limited to examples to the the examples illustrated illustrated and/or and/or

defined above. defined above. TheThe use use of verbs of the the verbs “comprise”, "comprise", “include”, "include", “involve”, "involve", or any or any other other variant, variant,

as well as as well as their their conjugations, conjugations,cannot cannot in in any any way exclude the way exclude the presence presenceofofelements elements other other

than those than thosementioned. mentioned. The The use use of theofindefinite the indefinite article article "a", “a”, "an",“an”, or definite or the the definite article article “the”, "the",

to introduce to introduce an element, does an element, doesnot notexclude excludethe thepresence presenceof of a plurality of a plurality of these these elements. elements. 20 Thereference The reference numbers numbers in claims in the the claims does does not not their limit limit their scope.scope.

ItIt isis to to be understood be understood that, that, if ifany any prior prior artart publication publication is referred is referred to herein, to herein,

such referencedoes such reference doesnot notconstitute constitutean anadmission admission thatthe that thepublication publicationforms formsa apart partofofthe the common general common general knowledge knowledge in the in theinart, art, in Australia Australia or any or anycountry. other other country. In In the claimswhich the claims which follow follow andand in the in the preceding preceding description description of the invention, of the invention,

25 exceptwhere 25 except where thethe contextrequires context requiresotherwise otherwise due duetotoexpress expresslanguage languageorornecessary necessary implication, the word implication, the word"comprise" “comprise” or variations or variations suchsuch as “comprises” as "comprises" or “comprising” or "comprising" is used is used

in in an inclusive sense, an inclusive sense,i.e. i.e. to to specify specifythe thepresence presence of the of the stated stated features features but to but not notpreclude to preclude the presence the presence or or addition addition of of further further features features in in various various embodiments embodiments of the of the invention. invention.

30 30

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Claims

2018256499 11 Jun 2025 CLAIMS CLAIMS

1. 1. Heating devicecomprising: Heating device comprising: •a a combustive fluidinlet, combustive fluid inlet, 5 •a combustible a combustible fluid fluid inlet, inlet, 2018256499

•a a combustion head combustion head provided provided to emit to emit a flame, a flame,

•a first fluid a first fluidconnection connection comprising comprising a a first pipe first pipeand andconnected connected fluidically fluidically to to thethe

combustive fluidinlet combustive fluid inlet and andtotothe thecombustion combustion head, head,

•a secondfluid a second fluidconnection connection comprising comprising a second a second pipe housed pipe housed at least at least partially partially

10 in in the the first firstpipe pipeand and connected fluidically to connected fluidically to the the combustible combustible fluidinlet fluid inletand andtotothe thecombustion combustion head, head,

•a heat-emittingtube a heat-emitting tubeofofwhich which a firstpart a first partis is in in fluid fluidcommunication with communication with the the first first

fluid connection fluid andisisprovided connection and providedto to receive receive the the combustion combustion head head and and aemitted a flame flamebyemitted the by the combustion head, combustion head,

15 •a fluid outlet a fluid outlet connected fluidically to connected fluidically to the the first firstpart partofofthe theheat-emitting heat-emitting tube via tube via

a secondpart a second partofofthe theheat-emitting heat-emittingtube, tube, and and

• means formoving means for moving fluid fluid enabling enabling to to create create a movement a movement of fluid of fluid between: between:

o the combustive the combustivefluid fluidinlet inlet and thecombustion and the combustion head head via via the the firstfirst fluid fluid

connection, connection, and and

20 o the first part the first part of the heat-emitting of the heat-emittingtube tube andand the the second second part ofpart the of the heat- heat-

emitting tube, emitting tube,

whereinthe wherein thecombustion combustionheadhead andcombustible and the the combustible fluid are fluid inlet inletseparated are separated by a by a distance of at distance of at least least 50cm 50cmandand thethe combustion combustion head head andcombustive and the the combustive fluid are fluid inlet inlet are separated separated byby a a distance distance of of at at least50cm; least 50cm; 25 25 the second pipe is at least partially flexible to allow it to extend through the first the second pipe is at least partially flexible to allow it to extend through the first

pipe for the pipe for the entire entire distance between distance between the the combustible combustible flidflid inletand inlet and thethe combustion combustion head;head; and and

the heating the heating device device further further comprises comprisesa aremote remote ignitionmeans ignition means enabling enabling to to remotely ignite aa flame remotely ignite flame at at the the combustion combustionhead head andand a remote a remote flameflame verification verification means means

30 30 .

20 20

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2. 2. Heating deviceaccording Heating device according to to claim claim 1, 1, wherein: wherein:

• the the device devicefurther further comprises comprises a casing, a casing,

• the the first first fluid connection fluid connection comprises, between comprises, between thethe combustive combustive fluidfluid inlet inlet andand the the

5 first pipe, a first connection part included in the casing, first pipe, a first connection part included in the casing, 2018256499

• in in that that the the second fluidconnection second fluid connection comprises, comprises, between between the combustible the combustible fluid fluid inlet inletand and the the second pipe,a asecond second pipe, second connection connection part part included included in casing, in the the casing, and and

• in in that that the the combustion head combustion head is is situated situated outside outside of of thethe casing. casing.

10 3.

3. Heating deviceaccording Heating device according to to anyany one one of preceding of the the preceding claims, claims, wherein wherein the combustion the combustion

head is mechanically head is mechanicallycoupled coupled to the to the firstfirst partpart of of the the heat-emitting heat-emitting tube tube by coupling by coupling

elements fixed to elements fixed to the combustionhead the combustion head and and arranged arranged to able to be be able to slide to slide along along an inner an inner

surface of the surface of the second second pipe pipe and/or and/or an an inner inner surface surface of the of the heat-emitting heat-emitting tube.tube.

15 4.

4. Heating device according Heating device according toto any anyone one of of thethe preceding preceding claims, claims, wherein wherein the heat- the heat-

emitting tube comprises emitting tube comprises a section a section provided provided to disassembled. to be be disassembled.

5. 5. Heating device according Heating device accordingtoto any anyone oneofofthe thepreceding preceding claims,wherein claims, wherein thethe second second

pipe is provided pipe is to support provided to supporta atemperature temperature of at of at least least 300°C 300°C and/or and/or the second the second pipe comprises pipe comprises

20 a a metal. metal.

6. 6. Heating deviceaccording Heating device accordingto to claim claim 5, 5, wherein wherein the the metal metal is stainless is stainless steel. steel.

7. 7. Heating deviceaccording Heating device according to any to any one one of preceding of the the preceding claims, claims, whereinwherein the the first firstispipe is pipe

25 rigid 25 rigid and/or and/or thethe second second pipe pipe is more is more flexible flexible than than the first the first pipe. pipe.

8. 8. Heating deviceaccording Heating device accordingtotoany anyoneone of the of the preceding preceding claims, claims, wherein wherein the first the first

pipe hasananangle pipe has angleandand in in thatthethesecond that second pipepipe is least is at at least partiallyflexible partially flexibleand andisisbent. bent.

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9. 9. Heating device according Heating device according toto any anyone one of of thethe preceding preceding claims, claims, wherein wherein the heat- the heat-

emitting tube and emitting tube andfirst first pipe formpart pipe form part of of aa same samepiece. piece.

10. 10. Heating Heating equipment equipment for decontaminating for decontaminating earth, earth, for for aorsauna, a sauna, or for industrial for industrial installation installation

5 such as a afurnace, such as furnace,a atunnel tunnelfurnace furnaceor ora chemical a chemical bathbath comprising comprising the the heating heating 2018256499

device according device according toto any any oneone of of claims claims 1 to1 9. to 9.

11. 11. Heating Heating method method comprising comprising the the steps steps of:of:

• providing providing aa heating heatingdevice deviceaccording according to any to any one one of claims of claims 1 to 19,to 9,

10 • arranging theheating arranging the heatingdevice device so so thatthat thethe heat-emitting heat-emitting tube tube is atisleast at least partially partially

in in a a zone to be zone to be heated, heated, • connecting fluidically the connecting fluidically the combustive fluidinlet combustive fluid inlet to to aa combustive fluidsupply, combustive fluid supply, • connecting fluidically the connecting fluidically the combustible fluidinlet combustible fluid inlet to to aa combustible fluid supply, combustible fluid supply, • starting starting the the means formoving means for moving fluid,and fluid, and 15 • starting starting the the flame at the flame at the combustion head. combustion head.

22 22

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