CA2014218A1 - Gas burner unit for heating device having a radiant tube - Google Patents
Gas burner unit for heating device having a radiant tubeInfo
- Publication number
- CA2014218A1 CA2014218A1 CA002014218A CA2014218A CA2014218A1 CA 2014218 A1 CA2014218 A1 CA 2014218A1 CA 002014218 A CA002014218 A CA 002014218A CA 2014218 A CA2014218 A CA 2014218A CA 2014218 A1 CA2014218 A1 CA 2014218A1
- Authority
- CA
- Canada
- Prior art keywords
- burner
- chamber
- air admission
- mixing
- burner unit
- 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.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/126—Radiant burners cooperating with refractory wall surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D5/00—Hot-air central heating systems; Exhaust gas central heating systems
- F24D5/06—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated
- F24D5/08—Hot-air central heating systems; Exhaust gas central heating systems operating without discharge of hot air into the space or area to be heated with hot air led through radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
- F23D14/08—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with axial outlets at the burner head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/26—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid with provision for a retention flame
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Gas Burners (AREA)
- Combustion Of Fluid Fuel (AREA)
- Resistance Heating (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention relates to a gas and radiant tube heating device.
The gas burner unit for radiant tube heating device, of the type comprising a burner assembly adaptable on a casing defining a mixing and combustion chamber extended by a radiant tube connecting sleeve, characterized in that:
- the casing (10) forms a flange (15) for mounting a support housing (11) comprises in its mixing and combustion chamber (l4), a centering cross-lattice (23), - the casing (11) comprises a primary air admission chamber (44) and a safety compartment (45), - and the burner assembly (12) comprises a support (48) carrying a solenoid type supply valve (49) and a burner (62) having a centered combustion head (24) carried by the cross-lattice.
The invention finds an application in hairpin tube apparatus.
The invention relates to a gas and radiant tube heating device.
The gas burner unit for radiant tube heating device, of the type comprising a burner assembly adaptable on a casing defining a mixing and combustion chamber extended by a radiant tube connecting sleeve, characterized in that:
- the casing (10) forms a flange (15) for mounting a support housing (11) comprises in its mixing and combustion chamber (l4), a centering cross-lattice (23), - the casing (11) comprises a primary air admission chamber (44) and a safety compartment (45), - and the burner assembly (12) comprises a support (48) carrying a solenoid type supply valve (49) and a burner (62) having a centered combustion head (24) carried by the cross-lattice.
The invention finds an application in hairpin tube apparatus.
Description
6AS BURN~ UHIT F~R HEATING DEYICE ~A~DNG A RADIANT TUBE
The present invention concerns rad:ian~ tube heating devices using as a heating energy source l;he combustion of a combustible gas drawn ~rom a distribuSion ma:insO
05 Hers, the tPrm radiant tube heating d0vic~ coYers all currently known st~uctures employing con~inuous tube systems, aIthough the present invention has a particuIar prefe~red application in heating devices haYing a single-unit struc~u:rs o~ the type employing a hairpin tube.
19 The above type of dev~ca~has 9 burner block that simultaneously provides several simultaneous functions.
The first is to support the burner itself, tosether with its opera~ing accessories~
The second is to ensure the supply of combustion air to the burner.
The third is to provide a connection for the tube in which the flame from the burner evolYes.
Presently known burner units can be considered to give only partial satisfaction in carrying out the above functions, owing to their structural design which does not allow assembly-dismantling of the burner unit for maintenance or replacPment andtor do not provide effective protectio~? notably : against rsturns o ~lame in the supply device-~, and control and resulation o~ the burner.
25 / Another shortcoming o~ known burner units lies in the fact that they are generaIly îll-suited ~o ensure a secondary air in~lux at an air temperature range adapted to establish good combustion.
Another sho~tcoming of known b~rner uni~s l~es in the fact that they are also generally structurally ill-suited to carry out, within the smallest possible volume, the combustion and ext_action necPssary to reach opti~um operating conditions for a heater using a hairpin tube.
The object of the present invention i5 to o~ercome the above-mentioned drawbacks by proposing a new burner unit that is 20~42~
specially designed to sa~sfy these aims by having a simple construction and easy moun~ing, compatibl~ with ~h0 construction o~ independent functional sub-assemblies capa~l~ of being joinet in a s~pl8 mounting and adapting operat~on to f~nm ~ burner unit that 05 ~s di~ectly ~dap~abla to a gas hRating devic~.
To achisv~ the ~bove aims, the buxne~ unit ~ccording t~
the invention is characteri2ed in ~ha~ :
- the casing form3 a moun~ing flanss for a support housing, c~ntains in its mixing and combustion chamber a csntring cross lattica ~nd defines an ai~ sdmission c~rcuit, - ths hsusing includes a fire pr~teGtion wall dividing it int~ a primary air admission chamber and a protection compartment, -and the burner assembly includes a support adapting to the housins and bearing, on the one hand, a solenoid type supply ~alv~ located in the safety compartment and, in relation w~th said valvel on the other hand, a burner crossing the fir~ protection wall, extending in~o the primary air sdmission chamber and into the mixing and combustion chamber, and having a oombustian head csnt~ed and supported by the cross latticP.
Various other characteris~ics will come ou~ from th~
: ~ollowing desc~iption with rsference to the appended dxawings which show, as 3; non-rèst~ictiva axample, an embodiment of the invention. '`
: ~ Figure 1 is a schema~ic view of a radiant t~be ~yp0 : 25 heating devic~ having 8 burner unit according to the invention.
Figur~ 2 is ~ sids;cross-s2ctional view on a larger scals along th~:p}ane II-II o~ Figure 1.
: Figur3 3 is a plan view taken aIong ~he line III-III of Figure 2.
Figurs 4 i5 a sid~ view taken alon~ the lins IY-IV of Figurs 3 Figure 5 is a partial transversa} cross-sectional view along the line~V-V of Figure 2.
~ Figurs 6 is an axial vertical cross-section showing, on a larger scale, const-uctional details of one o~ the elements shawn 2 1 ~
in Figure 2.
Figure 1 shows a heatin~ device 1 comprising~a burn~r unit 2 and a radiant tube 3 associated ~o a reflector 4.
According to the example shown, the radiant tube 3 is formed by an 05 ingoing tube segment 5 an~ an outgoing tube segment 6 ~rom which mechanical extraction of the combustion gases is ef~ected. It should be borne in mind that the object of the present in~ention, at least in part, also applies to heating devices which are formed by a continuous tube not necessarily having a hairpin form.
In all cases, the heating device is intanded to~be held at some height in the surroundings to be heated through hanging means such as 7.
The burner unit, generally designated by the reference 2, is formed by a casing 10 bearing, in relation with a support housing 11, a burner assembly 12 intended to be connected to a pressurized combustible gas distribution mains 13.
The casing 10 is formed, as shown in Figures 2 to 5, to defina a chamber 14, termed mixing and combustion chamber, opening from a flange 15 for mounting the housing 11. The~chamber 14 is prolonged, preferably along the opposite side to the flange 15, by a sleeve 16 fGr~connecting a~radiant tube 5, eg. by internal ; sliding engagement and axial locking by any appropriate means, such as a pressvre screw 18. The casin~ 10 defines, laterally with respect to chamber 14, a secondary air admission chamber 19 having an ad~ission hole 20 which opens from a flange 21 defining a saating for a filt r of grille, not shown. Preferably, the chamber l9 also has a hole 22~tarmed air admission hole, at a distance ~rom the main admission provided by hole 20. Preferably, hole 22 is also provided with a grille or a filter, is oriented such as to allow an intake of hot a~r, and is thus situated at least close to the sleeve 16. The secondary air admission chamber 19 communicates with chamber 14, eg.~at the level of the flange's 15 plane.
The chamber 14 is constructed to include a cross lattice 23 for csntering and suppo~king the combustio~ head 24 of the assembly 12. Advantageously, the cross-lattice 23 is formed by 2 ~
w~nglets 25 radially extendin~ from the chamber's 14 irternal peripheral wall and interrupted at a distance from another so as to form a seat centred on the connection ~leeve 16.
The rasing 10 additionally includes, in one of its 05 walls, an opening 26 for the ins~rtion of an ignition electrode 27 intended to be placed downstr~am of the head 24 inside the chamber 14, in the co~bustion part of the ~at~er, by being essentially orientated in front of an ignition ring 28 presented by the head 24, as can be seen from Figure 5.
In the case of a specific application to a heating device having a hairpin type radiant tube, as shown in Figure 1, the casing 10 is furthermore advantageously constructed so as to bear, laterally with respect to the chamber 14, an enclosure 29 that opens from the flange 15 and is prolonged by a connection sleeve 30 whose axis is parallel to sleeve i6. The connection sleeve 30 is intended to adapt to the open terminal portion o the rsturn tube 6 by any appropriate means. The enclosure 29 is intended to c~ntain, at least partially9 a mechanical extractor, not shown, eg. of the~centrifugal type. To this end, the enclosure 29 ~ ~0 has a Yolute shape and communicates with a tube 31 opening, Yia an : extrac.~ion hole 32, into the interface provided by the flange 21.
: The enclosure 29 is ssparated from the secondary air admission chamber lg hy a wall 33 forming a strip 34 situated in the plane of the ~lange 15 tn which it is joined.
The housing 11 is formed by a case 40 made eg., but not exclusively, formed from plate metal having a raised edge 41 by which it can interface and be~mounted to the ~lan~e 15 by means of sc.ows or the like 42~ The case 40 has at least one open ~all, such as the top and bottom, and includes an internal ~ire protPction wall 43 dividin~ it into a secondary air admission chamber 44, communicating with the ambient surroundings via the case wall openinss, and a safety compartment 45. In a construction designed for a hairpin tube type device, the case 40 additionally includes a separating wall 46 designed to cooperate with the strip 34. This wall 46 defines, in the case 40, a second compartment 47 5 ~ 2 ~ ~
reserved for the meGhanical extrac~or, together with its operating cont.ol devices.
The housing 11 bears a burner assembly 12 which comprises a support 48 for mounting a solenoid type supply valve 05 49 connectable to the mains 13~ The support 48 has ~ plate 5U, te~med fixing plate, on the rear wall 51 of the case 40, and a front wall 52 designed to cooperate with th~ fire protection wall 43 to mask an opening 53 in said wall 43.
The support 4a bears, on the cooperating wall, a jet-holder adapter 54 which is made to cross the opening 53 in the fire protection wall 43. The adapter S4, which is more speciically illustrated in Figure 6, bears a rsmoYable jet 60 and has an internal pressure measurement socket 61. The adapter 54 prùvides a mount for a burner 62 composed of a tubular body forming, from an interfacing end-piece 63 on the adapter 54, a cylindrical portion 64 provided with primary air admission eyelets 65 giYing onto the chamber 44. The cylindrical portion 64 is prolonged by a con~erging section 60 which is itself prolonged by : a diverging section 67 giYing onto the combustion head 24 ~0 supported and centred by the cross lattice 23. The outer part of the head 24 bears a removable annular e}em~nt 68 forming, in the plane of:the head's 24 open section, the ring 28 composed by an annular ramp of axial holes giving onto the inside of a chamber 70 provided between the annular element 6a and the tubular body, which furthermore presents 3 series of radial holes 71 : communicating with said chamber. The series of holes 71 is located in the tubular body upstream of the annular edge 72 which is formed internally by the tubular body eg. by being composed of a removable liner 73.
3C The combustible gas supplied under pressure by the jet 60 provokes a primary air draft forming a combustible mixture with the gas, circulating inside the tubular body along the direction f1.
Part of this primary mixture strikes the edge 72 and becomes diverted by the series of holes 71 towards the chamber 70, to be delivered by the external peripheral ring 28 surroundlng the head's G ~ 2 1 ~
24 open section. As can be seen from Figure 5, and as was explained hereabove, the electrode 27 is located in proximal relation with the ring 28, enabling it to perform satisfa~;ory ignition of the primary combustible mi~ture diffused at r lat;ively low pressure by 05 the ring Z8. The above ignition process then ~nables ignition o~ the high pressure comhustible torch delivered by the head's 24 open section and by the principal flow of the primary mixture transported inside the tubular body ccmposing the burner 62.
This pressurized gas torch is associated, at the burner output, to the secondary air supplied by chamber 14 in rslation with the admission chamber l9. Operation with a possibly variable and controilable pressure can then take place through the solenoid type valve 49, notably by use of the pressure socket 61.
As can be concluded from the above, the burner unit according to the invention is of particularly simple construction, insofar as it usPs a main casing serving to define the different chambers, enclosures and connection sleeves as well as supporting and c ntering the burner and extractor.
The thus-desisned casing also holds and adapts with the housing 11 which defines the secondary air admission chamber 44 and the compartment 4~ insulated by the fire protection wall 43, whose opening passage 53 is consti~uted by the cooperatin~ wall 52. In this manner, a specific function of supporting and of dellmiting chambers and safety compartments is provided by a casz of simple construction, eg. made solely from folded plate metal.
The case 11 also provides support and enables quick mountlng of the burner assembly 12 which can be adapted, by being mounted from the rear wall, by a fixing plate 50 and by the centring means acting between the burner head 24 and the cross lattice. Quick changing for cleaning, adjustment or replacement can thus be ensured since the burner assem~ly 12 forms a completely dismantlable sub-assembly.
The case 11 provides a dual function when used with hairpin tube devices since, by means of the separating wall 46, it de lnes the primary and secondary air admission circuits and :
7 2~2~8 isolates the secondary compartment 47 intended for the ~xtractor, which is thus also protected agains~ all risks of return o~ flame by means of this wal7 46.
The prssent invention is not limiteld to the examples 05 described and shown, since Yarious modiîicati.ons can be brought withou~ leaving its scope.
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:~:: : 20 ;
: : :
~ ~25 : : ; ::
: :: :: : : : : :
:: :
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The present invention concerns rad:ian~ tube heating devices using as a heating energy source l;he combustion of a combustible gas drawn ~rom a distribuSion ma:insO
05 Hers, the tPrm radiant tube heating d0vic~ coYers all currently known st~uctures employing con~inuous tube systems, aIthough the present invention has a particuIar prefe~red application in heating devices haYing a single-unit struc~u:rs o~ the type employing a hairpin tube.
19 The above type of dev~ca~has 9 burner block that simultaneously provides several simultaneous functions.
The first is to support the burner itself, tosether with its opera~ing accessories~
The second is to ensure the supply of combustion air to the burner.
The third is to provide a connection for the tube in which the flame from the burner evolYes.
Presently known burner units can be considered to give only partial satisfaction in carrying out the above functions, owing to their structural design which does not allow assembly-dismantling of the burner unit for maintenance or replacPment andtor do not provide effective protectio~? notably : against rsturns o ~lame in the supply device-~, and control and resulation o~ the burner.
25 / Another shortcoming o~ known burner units lies in the fact that they are generaIly îll-suited ~o ensure a secondary air in~lux at an air temperature range adapted to establish good combustion.
Another sho~tcoming of known b~rner uni~s l~es in the fact that they are also generally structurally ill-suited to carry out, within the smallest possible volume, the combustion and ext_action necPssary to reach opti~um operating conditions for a heater using a hairpin tube.
The object of the present invention i5 to o~ercome the above-mentioned drawbacks by proposing a new burner unit that is 20~42~
specially designed to sa~sfy these aims by having a simple construction and easy moun~ing, compatibl~ with ~h0 construction o~ independent functional sub-assemblies capa~l~ of being joinet in a s~pl8 mounting and adapting operat~on to f~nm ~ burner unit that 05 ~s di~ectly ~dap~abla to a gas hRating devic~.
To achisv~ the ~bove aims, the buxne~ unit ~ccording t~
the invention is characteri2ed in ~ha~ :
- the casing form3 a moun~ing flanss for a support housing, c~ntains in its mixing and combustion chamber a csntring cross lattica ~nd defines an ai~ sdmission c~rcuit, - ths hsusing includes a fire pr~teGtion wall dividing it int~ a primary air admission chamber and a protection compartment, -and the burner assembly includes a support adapting to the housins and bearing, on the one hand, a solenoid type supply ~alv~ located in the safety compartment and, in relation w~th said valvel on the other hand, a burner crossing the fir~ protection wall, extending in~o the primary air sdmission chamber and into the mixing and combustion chamber, and having a oombustian head csnt~ed and supported by the cross latticP.
Various other characteris~ics will come ou~ from th~
: ~ollowing desc~iption with rsference to the appended dxawings which show, as 3; non-rèst~ictiva axample, an embodiment of the invention. '`
: ~ Figure 1 is a schema~ic view of a radiant t~be ~yp0 : 25 heating devic~ having 8 burner unit according to the invention.
Figur~ 2 is ~ sids;cross-s2ctional view on a larger scals along th~:p}ane II-II o~ Figure 1.
: Figur3 3 is a plan view taken aIong ~he line III-III of Figure 2.
Figurs 4 i5 a sid~ view taken alon~ the lins IY-IV of Figurs 3 Figure 5 is a partial transversa} cross-sectional view along the line~V-V of Figure 2.
~ Figurs 6 is an axial vertical cross-section showing, on a larger scale, const-uctional details of one o~ the elements shawn 2 1 ~
in Figure 2.
Figure 1 shows a heatin~ device 1 comprising~a burn~r unit 2 and a radiant tube 3 associated ~o a reflector 4.
According to the example shown, the radiant tube 3 is formed by an 05 ingoing tube segment 5 an~ an outgoing tube segment 6 ~rom which mechanical extraction of the combustion gases is ef~ected. It should be borne in mind that the object of the present in~ention, at least in part, also applies to heating devices which are formed by a continuous tube not necessarily having a hairpin form.
In all cases, the heating device is intanded to~be held at some height in the surroundings to be heated through hanging means such as 7.
The burner unit, generally designated by the reference 2, is formed by a casing 10 bearing, in relation with a support housing 11, a burner assembly 12 intended to be connected to a pressurized combustible gas distribution mains 13.
The casing 10 is formed, as shown in Figures 2 to 5, to defina a chamber 14, termed mixing and combustion chamber, opening from a flange 15 for mounting the housing 11. The~chamber 14 is prolonged, preferably along the opposite side to the flange 15, by a sleeve 16 fGr~connecting a~radiant tube 5, eg. by internal ; sliding engagement and axial locking by any appropriate means, such as a pressvre screw 18. The casin~ 10 defines, laterally with respect to chamber 14, a secondary air admission chamber 19 having an ad~ission hole 20 which opens from a flange 21 defining a saating for a filt r of grille, not shown. Preferably, the chamber l9 also has a hole 22~tarmed air admission hole, at a distance ~rom the main admission provided by hole 20. Preferably, hole 22 is also provided with a grille or a filter, is oriented such as to allow an intake of hot a~r, and is thus situated at least close to the sleeve 16. The secondary air admission chamber 19 communicates with chamber 14, eg.~at the level of the flange's 15 plane.
The chamber 14 is constructed to include a cross lattice 23 for csntering and suppo~king the combustio~ head 24 of the assembly 12. Advantageously, the cross-lattice 23 is formed by 2 ~
w~nglets 25 radially extendin~ from the chamber's 14 irternal peripheral wall and interrupted at a distance from another so as to form a seat centred on the connection ~leeve 16.
The rasing 10 additionally includes, in one of its 05 walls, an opening 26 for the ins~rtion of an ignition electrode 27 intended to be placed downstr~am of the head 24 inside the chamber 14, in the co~bustion part of the ~at~er, by being essentially orientated in front of an ignition ring 28 presented by the head 24, as can be seen from Figure 5.
In the case of a specific application to a heating device having a hairpin type radiant tube, as shown in Figure 1, the casing 10 is furthermore advantageously constructed so as to bear, laterally with respect to the chamber 14, an enclosure 29 that opens from the flange 15 and is prolonged by a connection sleeve 30 whose axis is parallel to sleeve i6. The connection sleeve 30 is intended to adapt to the open terminal portion o the rsturn tube 6 by any appropriate means. The enclosure 29 is intended to c~ntain, at least partially9 a mechanical extractor, not shown, eg. of the~centrifugal type. To this end, the enclosure 29 ~ ~0 has a Yolute shape and communicates with a tube 31 opening, Yia an : extrac.~ion hole 32, into the interface provided by the flange 21.
: The enclosure 29 is ssparated from the secondary air admission chamber lg hy a wall 33 forming a strip 34 situated in the plane of the ~lange 15 tn which it is joined.
The housing 11 is formed by a case 40 made eg., but not exclusively, formed from plate metal having a raised edge 41 by which it can interface and be~mounted to the ~lan~e 15 by means of sc.ows or the like 42~ The case 40 has at least one open ~all, such as the top and bottom, and includes an internal ~ire protPction wall 43 dividin~ it into a secondary air admission chamber 44, communicating with the ambient surroundings via the case wall openinss, and a safety compartment 45. In a construction designed for a hairpin tube type device, the case 40 additionally includes a separating wall 46 designed to cooperate with the strip 34. This wall 46 defines, in the case 40, a second compartment 47 5 ~ 2 ~ ~
reserved for the meGhanical extrac~or, together with its operating cont.ol devices.
The housing 11 bears a burner assembly 12 which comprises a support 48 for mounting a solenoid type supply valve 05 49 connectable to the mains 13~ The support 48 has ~ plate 5U, te~med fixing plate, on the rear wall 51 of the case 40, and a front wall 52 designed to cooperate with th~ fire protection wall 43 to mask an opening 53 in said wall 43.
The support 4a bears, on the cooperating wall, a jet-holder adapter 54 which is made to cross the opening 53 in the fire protection wall 43. The adapter S4, which is more speciically illustrated in Figure 6, bears a rsmoYable jet 60 and has an internal pressure measurement socket 61. The adapter 54 prùvides a mount for a burner 62 composed of a tubular body forming, from an interfacing end-piece 63 on the adapter 54, a cylindrical portion 64 provided with primary air admission eyelets 65 giYing onto the chamber 44. The cylindrical portion 64 is prolonged by a con~erging section 60 which is itself prolonged by : a diverging section 67 giYing onto the combustion head 24 ~0 supported and centred by the cross lattice 23. The outer part of the head 24 bears a removable annular e}em~nt 68 forming, in the plane of:the head's 24 open section, the ring 28 composed by an annular ramp of axial holes giving onto the inside of a chamber 70 provided between the annular element 6a and the tubular body, which furthermore presents 3 series of radial holes 71 : communicating with said chamber. The series of holes 71 is located in the tubular body upstream of the annular edge 72 which is formed internally by the tubular body eg. by being composed of a removable liner 73.
3C The combustible gas supplied under pressure by the jet 60 provokes a primary air draft forming a combustible mixture with the gas, circulating inside the tubular body along the direction f1.
Part of this primary mixture strikes the edge 72 and becomes diverted by the series of holes 71 towards the chamber 70, to be delivered by the external peripheral ring 28 surroundlng the head's G ~ 2 1 ~
24 open section. As can be seen from Figure 5, and as was explained hereabove, the electrode 27 is located in proximal relation with the ring 28, enabling it to perform satisfa~;ory ignition of the primary combustible mi~ture diffused at r lat;ively low pressure by 05 the ring Z8. The above ignition process then ~nables ignition o~ the high pressure comhustible torch delivered by the head's 24 open section and by the principal flow of the primary mixture transported inside the tubular body ccmposing the burner 62.
This pressurized gas torch is associated, at the burner output, to the secondary air supplied by chamber 14 in rslation with the admission chamber l9. Operation with a possibly variable and controilable pressure can then take place through the solenoid type valve 49, notably by use of the pressure socket 61.
As can be concluded from the above, the burner unit according to the invention is of particularly simple construction, insofar as it usPs a main casing serving to define the different chambers, enclosures and connection sleeves as well as supporting and c ntering the burner and extractor.
The thus-desisned casing also holds and adapts with the housing 11 which defines the secondary air admission chamber 44 and the compartment 4~ insulated by the fire protection wall 43, whose opening passage 53 is consti~uted by the cooperatin~ wall 52. In this manner, a specific function of supporting and of dellmiting chambers and safety compartments is provided by a casz of simple construction, eg. made solely from folded plate metal.
The case 11 also provides support and enables quick mountlng of the burner assembly 12 which can be adapted, by being mounted from the rear wall, by a fixing plate 50 and by the centring means acting between the burner head 24 and the cross lattice. Quick changing for cleaning, adjustment or replacement can thus be ensured since the burner assem~ly 12 forms a completely dismantlable sub-assembly.
The case 11 provides a dual function when used with hairpin tube devices since, by means of the separating wall 46, it de lnes the primary and secondary air admission circuits and :
7 2~2~8 isolates the secondary compartment 47 intended for the ~xtractor, which is thus also protected agains~ all risks of return o~ flame by means of this wal7 46.
The prssent invention is not limiteld to the examples 05 described and shown, since Yarious modiîicati.ons can be brought withou~ leaving its scope.
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:~:: : 20 ;
: : :
~ ~25 : : ; ::
: :: :: : : : : :
:: :
~ ~:
Claims (11)
1. Gas burner unit for a radiant tube heating device, of the type comprising a burner assembly (12) adapted to a housing (10) defining a mixing and combustion chamber (14) prolonged by a radiant tube connector sleeve (16), characterized in that the casing (10) forms a mounting flange (15) for a support housing (11), contains in its mixing and combustion chamber (14) a centring cross lattice (23) and defines an air admission circuit, - the housing (11) includes a fire protection wall (43) dividing it into a primary air admission chamber (44) and a safety compartment (45), - and the burner assembly (12) includes a support (48) adapting to the housing and bearing, on the one hand, a solenoid type supply valve (49) located in the safety compartment and, in relation with said valve, on the other hand, a burner (62) crossing the fire protection wall, extending into the primary air admission chamber and into the mixing and combustion chamber, and having a combustion head (24) centred and supported by the cross lattice.
2. Burner unit according to claim 1, characterized in that the housing (10) defines, on the one hand, the mixing and combustion chamber prolonged by the sleeve (16) connectable to an ingoing tube (5) and, on the other hand, a mounting enclosure (29) for an extractor which communicates with a connection sleeve (30) adapted to an outgoing radiant tube (6).
3. Burner unit according to claims 1 or 2, characterized in that the casing (10) defines, between the mixing and combustion chamber (14) and the extractor enclosure (29), a secondary air admission opening into the mixing chamber.
4. Burner unit according to one of claims 1 to 3, characterized in that the casing (10) presents, in relation to the secondary air admission chamber, a main principal air admission hole (20) and a displaced air hole (22), opening close to at least the ingoing radiant tube (5).
5. Burner according to any one of claims 1 to 41 characterized in that the casing (10) includes an interfacing face defining a mounting flange (21) and into which open the principal air admission hole and a back-flow hole (32) communicating with the extract or enclosure (29).
6. Burner unit according to any one of claims 1 to 5, characterized in that the housing (10) includes, in the mixing and combustion chamber, radially extending winglets (25) defining the centering cross lattice (23).
7. Burner unit according to any one of claims l to 6, characterized in that the casing (10) has an opening (26) for mounting an ignition electrode (27) located in the mixing and combustion chamber (14) to be situated downstream of the cross lattice (23) opposite the ring (28) of the burner head.
8. Burner unit according to any one of claims 1 to 7, characterized in that the casing forms a flange (15) adapting to the housing (11) and which internally comprises a separating wall (46) isolating the air admission chamber from the extractor enclosure and defining a second compartment (47) for mounting and protecting a mechanical extractor.
9. Burner unit according to claim 1, characterized in that the burner (62) itself is composed of a tubular body (67) forming, from an end section (63) fitting to a jet-holder (54) adapter, a cylindrical portion (64) fitted with primary air admission eyelets (65) opening into the primary air admission chamber (44), a convergent portion (66), a divergent portion (67) and a combustion head (24) bearing an ignition and stabilisation ring (28).
10. Burner unit according to claim 9, characterized in that the ring (28) is formed by an annular ramp of holes (693 externally bordering the combustion head (24) and giving into a chamber (10) delimited by a ring (68) joined to the tubular body (62) which presents, upstream of an internal annular edge (72), a series of mixing holes (71) opening into the chamber.
11. Burner unit according to claims 9 or 10, characterized in that the burner (62) extends from a jet-holder connector (64) mounted on the support (48) which comprises a wall (52) cooperating with the fire protection wall and a fixing plate (50) on the housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8904869 | 1989-04-04 | ||
| FR8904869A FR2645627B1 (en) | 1989-04-07 | 1989-04-07 | GAS BURNER BLOCK FOR RADIANT TUBE HEATER |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2014218A1 true CA2014218A1 (en) | 1990-10-07 |
Family
ID=9380666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002014218A Abandoned CA2014218A1 (en) | 1989-04-07 | 1990-04-09 | Gas burner unit for heating device having a radiant tube |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0391818B1 (en) |
| JP (1) | JPH02267408A (en) |
| KR (1) | KR100193283B1 (en) |
| AT (1) | ATE78329T1 (en) |
| CA (1) | CA2014218A1 (en) |
| DE (1) | DE69000192T2 (en) |
| DK (1) | DK0391818T3 (en) |
| ES (1) | ES2034846T3 (en) |
| FR (1) | FR2645627B1 (en) |
| GR (1) | GR3005221T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1992874A2 (en) | 2007-05-18 | 2008-11-19 | John Vancak | Radiant heater assembly |
| CN112938092A (en) * | 2021-02-26 | 2021-06-11 | 芜湖昌立包装有限公司 | Novel heat-insulation and heat-preservation carton |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1729063A1 (en) * | 2005-06-03 | 2006-12-06 | Systema Polska Sp. z o.o. | Ceramic radiator |
| US8568021B2 (en) | 2011-09-29 | 2013-10-29 | Schwank Ltd. | Apparatus and method for measuring heat flux from radiant heater |
| US9080777B2 (en) | 2012-01-31 | 2015-07-14 | Schwank, Ltd. | Reflector for radiant tube heater |
| SG11201510379YA (en) * | 2013-06-26 | 2016-01-28 | Rinnai Kk | Stove burner |
| IT201600126485A1 (en) * | 2016-12-14 | 2018-06-14 | Carlieuklima S R L | HEATING SYSTEM WITH RADIANT TAPES |
| IT201700046757U1 (en) * | 2017-04-28 | 2018-10-28 | Carlieuklima S R L | HEATING SYSTEM WITH RADIANT TAPES |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2315231C2 (en) * | 1973-03-27 | 1986-01-02 | Walter Dipl.-Ing. 7000 Stuttgart Dreizler | Device for burning heating gases |
| FR2560359B3 (en) * | 1984-02-23 | 1987-04-10 | Laurent Francois | IMPROVEMENTS ON A GAS BURNER AND RADIANT TUBE HEATER |
| ES2035057T3 (en) * | 1986-06-04 | 1993-04-16 | Ambi-Rad Limited | APPARATUS FOR HEATING SPACES. |
| FR2609157B1 (en) * | 1986-12-26 | 1990-07-06 | Deleage Pierre | IMPROVEMENTS ON RADIANT GAS TUBES |
-
1989
- 1989-04-07 FR FR8904869A patent/FR2645627B1/en not_active Expired - Fee Related
- 1989-06-09 JP JP1148172A patent/JPH02267408A/en active Granted
-
1990
- 1990-04-04 AT AT90420170T patent/ATE78329T1/en not_active IP Right Cessation
- 1990-04-04 DE DE9090420170T patent/DE69000192T2/en not_active Expired - Fee Related
- 1990-04-04 ES ES199090420170T patent/ES2034846T3/en not_active Expired - Lifetime
- 1990-04-04 KR KR1019900004627A patent/KR100193283B1/en not_active IP Right Cessation
- 1990-04-04 DK DK90420170.4T patent/DK0391818T3/en active
- 1990-04-04 EP EP90420170A patent/EP0391818B1/en not_active Expired - Lifetime
- 1990-04-09 CA CA002014218A patent/CA2014218A1/en not_active Abandoned
-
1992
- 1992-07-16 GR GR920401551T patent/GR3005221T3/el unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1992874A2 (en) | 2007-05-18 | 2008-11-19 | John Vancak | Radiant heater assembly |
| CN112938092A (en) * | 2021-02-26 | 2021-06-11 | 芜湖昌立包装有限公司 | Novel heat-insulation and heat-preservation carton |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0379604B2 (en) | 1991-12-19 |
| KR900016679A (en) | 1990-11-14 |
| DE69000192D1 (en) | 1992-08-20 |
| DE69000192T2 (en) | 1993-02-11 |
| ATE78329T1 (en) | 1992-08-15 |
| FR2645627B1 (en) | 1991-07-19 |
| DK0391818T3 (en) | 1992-08-24 |
| GR3005221T3 (en) | 1993-05-24 |
| ES2034846T3 (en) | 1993-04-01 |
| EP0391818A1 (en) | 1990-10-10 |
| EP0391818B1 (en) | 1992-07-15 |
| JPH02267408A (en) | 1990-11-01 |
| KR100193283B1 (en) | 1999-06-15 |
| FR2645627A1 (en) | 1990-10-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |