EP0415037A2 - Brûleur à air soufflÀ© pour chaudière de chauffage avec recyclage des fumées - Google Patents

Brûleur à air soufflÀ© pour chaudière de chauffage avec recyclage des fumées Download PDF

Info

Publication number
EP0415037A2
EP0415037A2 EP90113114A EP90113114A EP0415037A2 EP 0415037 A2 EP0415037 A2 EP 0415037A2 EP 90113114 A EP90113114 A EP 90113114A EP 90113114 A EP90113114 A EP 90113114A EP 0415037 A2 EP0415037 A2 EP 0415037A2
Authority
EP
European Patent Office
Prior art keywords
chamber
opening
impeller
exhaust gas
housing
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.)
Granted
Application number
EP90113114A
Other languages
German (de)
English (en)
Other versions
EP0415037B1 (fr
EP0415037A3 (en
Inventor
Hans Dr. Viessmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT9090113114T priority Critical patent/ATE104756T1/de
Publication of EP0415037A2 publication Critical patent/EP0415037A2/fr
Publication of EP0415037A3 publication Critical patent/EP0415037A3/de
Application granted granted Critical
Publication of EP0415037B1 publication Critical patent/EP0415037B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/001—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space spraying nozzle combined with forced draft fan in one unit

Definitions

  • the invention relates to a forced draft burner for boilers with exhaust gas recirculation according to the preamble of patent claim 1.
  • the invention has for its object to concentrate all the elements necessary for exhaust gas recirculation on the fan burner sitting directly on the combustion chamber closure (combustion chamber door), with the proviso that for completely separate air and exhaust gas routing and delivery on short paths within the burner ensure without the drive effort compared to a conventional forced draft burner must be increased.
  • the additional expense for the burner design ultimately only consists in the fact that the air / gas guide housing must be provided with two chambers, i.e. with a partition.
  • this additional effort is minimal, since this can be mastered without any problems in terms of casting technology, especially since, as will be explained in more detail, such a housing can be environmentally friendly without a core, i.e. can be "shaped green".
  • the mixing tube is advantageously and preferably double-walled and the interior of this double wall, which leads to at least one exhaust gas outlet opening, is connected to the exhaust gas chamber.
  • all parts of the nozzle assembly advantageously do not come into contact with the exhaust gases.
  • the air supply and the exhaust gas routing chambers are, what does not require any further explanation per se and viewed perpendicular to the two impellers and in the direction of the nozzle stock extension, formed from two interconnected spiral or screw-shaped spaces, as is customary in burners of this type .
  • the forced draft burner consists of a boiler-side open housing 1 that can be placed on the boiler closure 8, in which a mixing tube 10 with a so-called nozzle assembly 4 and a blower impeller 7 for conveying air on a shaft 5 of the motor 5 perpendicular to the opening plane of the housing 1 'are arranged, the Blower impeller 7 is assigned an air inflow opening 28 in the adjacent housing wall on the drive side, and the impeller chamber 3 for the combustion air is connected to the interior of the mixing tube 10.
  • the boiler lock plate 8 which is the combustion chamber lock door in the exemplary embodiment (see FIG. 2), belongs equally to the boiler, not shown here, but also to the housing 1 of the burner, since without such a lock plate the burner would not be able to function and on the other hand the boiler could not be operated.
  • the housing 1 is divided into an exhaust chamber 2 on the closure plate side and an impeller chamber 3 for the combustion air extending parallel thereto by a partition wall 6 penetrated by the nozzle assembly 4 and the shaft 5 is that further in the exhaust gas chamber 2 on the shaft 5 projecting in this another impeller 7 'for the exhaust gas is arranged, the exhaust side suction port 9 is assigned to the suction side in the closure plate 8, and that finally the mixing tube 10 is double-walled and the interior 11 of the double wall is on the one hand connected to the exhaust gas chamber 2 and on the other hand is provided with an opening 12 oriented in the direction of the nozzle.
  • the entire exhaust gas recirculation is concentrated in the burner or in the housing 1, apart from the exhaust gas suction opening 9 in the closure plate 8, the exhaust gases sucked in by the further impeller 7 'in the shortest possible way and without mixing with the air flowing through the air inflow opening 28, reaches the mixing tube 10, but there not in the interior in which the nozzle assembly 4 is located, but in the interior 11 of the double wall, which is annular in cross section, from which the pressure is applied standing exhaust gas and recirculated from the combustion chamber exits the annular exhaust gas outlet opening 12 as a hose flow.
  • annular opening a plurality of individual openings can also be provided. The orientation of the openings can be provided transversely to parallel to the longitudinal axis of the mixing tube.
  • the impeller chamber 3 of the housing 1 is all associated with the burner and the fan Elements-bearing plate 13 is closed and further on the shaft 5 between the two rotor wheels 7, 7 'arranged in the partition 6 arranged through opening 14 closing disc 15 is arranged, which is dimensioned in relation to the diameter of the rotor wheel 7'. It is advantageous, and as can also be seen from FIG. 1, at least one magnetic adhesive element 16 to be arranged on the edge of the through opening 14 or on the edge of the disk 15.
  • This adhesive element 16 can have a ring shape or also consist of several individual magnets which are arranged in a ring structure.
  • an annular seal 15 ' is provided in the contact area of the disc 15 on the partition 6 to ensure a gas-tight separation of the two chambers 2, 3.
  • a connection of the impeller 7 'to the shaft 5 it is also possible according to the embodiment in Fig. 4, which does not require a disc 15 and provides separate storage of the impeller 7' for exhaust gas recirculation, the impeller 7 'with a more or less elastic Coupling, as shown, to couple with the blower impeller 7.
  • the exhaust gas suction opening 9 is arranged directly adjacent to the connecting edge 17 of the closure plate 8 and to the center of the impeller 7 '.
  • the exhaust gas opening 23 is thus aligned with the relatively cold, deepest lying area B of the combustion chamber or the combustion chamber, provided that the combustion chamber is arranged horizontally with its longitudinal axis (see FIG. 4).
  • the double-walled mixing tube 10 is formed from an inner sleeve 10 'and an outer sleeve 10', the outer sleeve having at least one exhaust gas inflow opening 18 'on its part 18 projecting into the exhaust chamber 2.
  • the double walls of the mixing tube 10 are expediently frustoconical in front of the opening 12 oriented in the nozzle direction and converging in the nozzle direction, as a result of which the supplied exhaust gases are conducted into the flame of the burner burning in front of the baffle plate 35.
  • the mouth-side end edges 19 of the two sleeves 10 ', 10' can, however, which is not particularly shown, be designed to be adjustable relative to each other.
  • baffles 34 in the interior 11 and / or in the mixing tube in front of the outer orifices in such a way that the flame and the exhaust gas have an opposite swirl.
  • the inner wall of the exhaust chamber 2 is provided with a suitable insulating coating 20, which is not only provided in the area of the impeller 7 ', but also covers the area of the exhaust chamber 2, in which the mixing tube 10 extends.
  • a suitable insulating coating 20 which is not only provided in the area of the impeller 7 ', but also covers the area of the exhaust chamber 2, in which the mixing tube 10 extends.
  • the impeller 7 ' in a capsule 21 (for example, made of thin stainless steel sheet), in its closure-side wall 22 with a suction opening 23 and in its peripheral wall 24 with an exhaust gas outlet opening 25 is provided.
  • the capsule 21 is arranged with a recessed opening edge 26 fitted into the through opening 14 of the partition 6.
  • the disc 15 can also be formed from a stainless steel sheet.
  • the capsule 21 completely surrounds the impeller 7 ', i.e. the capsule 21 is provided in the drive-side wall 22' with a through-opening 27 encompassing the shaft 5.
  • the bearing shown there is sealed in a suitable manner against any incoming exhaust gases (not shown), provided that the access opening 27 is not itself provided with a seal.
  • this is advantageously designed in consideration of a simple design and assembly-friendly arrangement such that the inner sleeve 10 'of the mixing tube 10 is attached on the inflow side with a flange 27' from the impeller chamber 3 to the partition 6 (see Fig. 3).
  • the outer sleeve 10 ⁇ of the mixing tube 10 consists, as shown in Fig. 1, from one with at least one gas inflow opening 18 'provided in the exhaust chamber 2 arranged sleeve part 28 and from a front sleeve part 28'.
  • the capsule 21 and the sleeve part 28 can advantageously be combined to form a part which is embossed or deep-drawn from a corresponding sheet metal blank made of, for example, thin stainless steel sheet. Since the housing 1 is open to the side of the closure plate 8, there is no difficulty in inserting such a part into the housing.
  • the embodiment according to FIG. 5 is therefore intended in particular for forced draft burners which are intended for boilers with a higher output.
  • This embodiment differs from the above-described exemplary embodiments in that a combustion air inflow space 31 is arranged between the impeller chamber 3 and the exhaust gas chamber 2 of the housing 1, the partition wall part 6 closing the exhaust gas chamber 2 'being centered on the impeller 7' in the form of a bearing extending through the inflow space 31 32 is formed and the other, the impeller chamber 3 delimiting partition part 6 ⁇ contains the air inflow opening 28 '.
  • the housing 1, as shown in FIG. 5, is made up of two ver bindable parts 1 ', 1 ⁇ formed.
  • the combustion inflow space 31 between the two parts 1 ', 1 ⁇ can be oily to the outside, and in the lower area connecting pins 33 on both parts 1', 1 ⁇ are sufficient to be able to produce a firm but detachable connection between the two parts there.
  • the shaft 5 ⁇ of the impeller 7 ' is mounted in the long bearing 32 and connected to the short shaft 5 of the motor 5' by a clutch 36.
  • the arrangement of the bearing 32 in the combustion supply space 31 is associated with the great advantage that this bearing 32 is continuously flushed with the incoming fresh combustion air drawn in by the impeller 7 and is thereby intensively cooled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Air Supply (AREA)
  • Incineration Of Waste (AREA)
EP90113114A 1989-08-28 1990-07-10 Brûleur à air soufflé pour chaudière de chauffage avec recyclage des fumées Expired - Lifetime EP0415037B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9090113114T ATE104756T1 (de) 1989-08-28 1990-07-10 Geblaesebrenner fuer heizkessel mit abgasrueckfuehrung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3928384A DE3928384A1 (de) 1989-08-28 1989-08-28 Geblaesebrenner fuer heizkessel mit abgasrueckfuehrung
DE3928384 1989-08-28

Publications (3)

Publication Number Publication Date
EP0415037A2 true EP0415037A2 (fr) 1991-03-06
EP0415037A3 EP0415037A3 (en) 1991-08-14
EP0415037B1 EP0415037B1 (fr) 1994-04-20

Family

ID=6388028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90113114A Expired - Lifetime EP0415037B1 (fr) 1989-08-28 1990-07-10 Brûleur à air soufflé pour chaudière de chauffage avec recyclage des fumées

Country Status (7)

Country Link
US (1) US5087194A (fr)
EP (1) EP0415037B1 (fr)
AT (1) ATE104756T1 (fr)
CA (1) CA2023907A1 (fr)
DD (1) DD297501A5 (fr)
DE (2) DE3928384A1 (fr)
ES (1) ES2053024T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4118261A1 (de) * 1991-06-04 1992-12-10 Viessmann Hans Geblaesebrenner fuer heizkessel
DE4308731A1 (de) * 1993-03-19 1994-09-22 Babcock Omnical Gmbh Verfahren zur Verminderung der Bildung von NOx und Kessel
US5490774A (en) * 1994-09-28 1996-02-13 Combustion Engineering, Inc. Oil gun mounting for use in steam generation boilers
IES70133B2 (en) * 1995-12-21 1996-10-30 Heating Research Limited Conversion oil burner
FR2760071B1 (fr) * 1997-02-27 1999-05-28 Pillard Chauffage Dispositif de montage de bruleurs dans un conduit de gaz a chauffer
US6238206B1 (en) 1997-05-13 2001-05-29 Maxon Corporation Low-emissions industrial burner

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1551733A1 (de) * 1962-11-23 1970-04-16 Otto Goldmann OElvergasungsbrenner
FR2208504A5 (fr) * 1972-11-23 1974-06-21 Kabofire Sa
DE2365186A1 (de) * 1973-12-29 1975-07-10 Elco Oelbrennerwerk Ag Verfahren und vorrichtung zum russfreien verbrennen von fluessigen brennstoffen
DE3820671A1 (de) * 1988-06-18 1989-12-21 Viessmann Werke Kg Heizungskessel fuer die verbrennung fluessiger oder gasfoermiger brennstoffe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690795A (en) * 1949-12-05 1954-10-05 Webb Howard William Barrett Fuel oil burner and controlling apparatus
US3437085A (en) * 1967-03-01 1969-04-08 American Gas Ass Self-cleaning gas oven system and gas burner means therefor
BE795261A (fr) * 1972-02-10 1973-05-29 Bailey Frank W Bruleurs canon a retention de flamme bleue et systemes d'echangeur de chaleur
CH609438A5 (fr) * 1976-02-27 1979-02-28 Fascione Pietro
JPS57155010A (en) * 1981-03-19 1982-09-25 Matsushita Electric Ind Co Ltd Combustion device
DE8708656U1 (fr) * 1987-04-21 1988-08-18 Weishaupt, Siegfried, Dipl.-Ing., 7958 Laupheim, De
AT392528B (de) * 1987-09-21 1991-04-25 Vaillant Gmbh Einrichtung zur abgasrezirkulation bei einem brennerbeheizten geraet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1551733A1 (de) * 1962-11-23 1970-04-16 Otto Goldmann OElvergasungsbrenner
FR2208504A5 (fr) * 1972-11-23 1974-06-21 Kabofire Sa
DE2365186A1 (de) * 1973-12-29 1975-07-10 Elco Oelbrennerwerk Ag Verfahren und vorrichtung zum russfreien verbrennen von fluessigen brennstoffen
DE3820671A1 (de) * 1988-06-18 1989-12-21 Viessmann Werke Kg Heizungskessel fuer die verbrennung fluessiger oder gasfoermiger brennstoffe

Also Published As

Publication number Publication date
CA2023907A1 (fr) 1991-03-01
DE59005426D1 (de) 1994-05-26
EP0415037B1 (fr) 1994-04-20
ES2053024T3 (es) 1994-07-16
US5087194A (en) 1992-02-11
DD297501A5 (de) 1992-01-09
EP0415037A3 (en) 1991-08-14
DE3928384A1 (de) 1991-03-21
ATE104756T1 (de) 1994-05-15

Similar Documents

Publication Publication Date Title
DE1926796U (de) Geblaese.
DE3020031C2 (de) Verdunstungsluftbefeuchter
EP1390679A1 (fr) Secheur
DE3309268C2 (fr)
DE2628269C3 (de) Gasturbinenanlage für Kraftfahrzeuge, wie Ackerschlepper
DE3122163A1 (de) "flammenwerferartiger brenner fuer stroemenden brennstoff"
EP0415037B1 (fr) Brûleur à air soufflé pour chaudière de chauffage avec recyclage des fumées
DE2742734A1 (de) Axialventilator
EP0940633A2 (fr) Hotte d'évacuation de fumée pour cuisine
DE102007019056A1 (de) Lüfter für Dunstabzugshaube
DE60016106T2 (de) Brenner mit Abgasrückführung
DE2510438C2 (de) Kamin für ein Holzfeuer
DE1206824B (de) Backofen
DE19753617B4 (de) Vorrichtung zur Heizung, Belüftung und/oder Klimatisierung, insbesondere für den Fahrgastraum eines Kraftfahrzeugs
EP0428117B1 (fr) Chaudière avec recirculation des gaz d'échappement vers le brûleur
DE2358425A1 (de) Geraeuscharme belueftungsvorrichtung mit durchzug-steuerung, insbesondere fuer heizungen
DE3325344C2 (de) Raumheizgerät für Kleinräume
DE3428330A1 (de) Backofen
DE2912002C2 (de) Gebläsebrenner für Heizkessel
DE3003930A1 (de) Ausgangsweiche einer dunstabzugshaube
DE2811586A1 (de) Heizanlage
DE904452C (de) Brenner fuer Winderhitzer
EP0347619A2 (fr) Chaudière pour la combustion de combustibles liquides ou gazeux
DE1428150A1 (de) Axialluefter,insbesondere zur Verwendung bei OElbrennern
DE3502648A1 (de) Vorrichtung zur mischung eines haupt-gasstroms mit mindestens einem neben-gasstrom

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19911025

17Q First examination report despatched

Effective date: 19930118

ITF It: translation for a ep patent filed

Owner name: STUDIO MASSARI S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940420

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19940420

REF Corresponds to:

Ref document number: 104756

Country of ref document: AT

Date of ref document: 19940515

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59005426

Country of ref document: DE

Date of ref document: 19940526

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2053024

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940731

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940810

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980702

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19980710

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19980720

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19980724

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980730

Year of fee payment: 9

Ref country code: AT

Payment date: 19980730

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980801

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19980813

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990710

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990711

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990731

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990731

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990731

BERE Be: lapsed

Owner name: VIESSMANN HANS

Effective date: 19990731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000201

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990710

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20000201

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000503

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20000810

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050710