EP0491444A1 - Kombinierte Vebrennungsluftzu- und Abgasabfuhr - Google Patents

Kombinierte Vebrennungsluftzu- und Abgasabfuhr Download PDF

Info

Publication number
EP0491444A1
EP0491444A1 EP19910203330 EP91203330A EP0491444A1 EP 0491444 A1 EP0491444 A1 EP 0491444A1 EP 19910203330 EP19910203330 EP 19910203330 EP 91203330 A EP91203330 A EP 91203330A EP 0491444 A1 EP0491444 A1 EP 0491444A1
Authority
EP
European Patent Office
Prior art keywords
gas exhaust
supply
pipe
exhaust
opening
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
EP19910203330
Other languages
English (en)
French (fr)
Other versions
EP0491444B1 (de
Inventor
J.C. Barendregt
Paul Th. J. Overman
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.)
BURGERHOUT B.V.;ALCOA NEDERLAND B.V.
Original Assignee
BURGERHOUT BV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=19858159&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0491444(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by BURGERHOUT BV filed Critical BURGERHOUT BV
Publication of EP0491444A1 publication Critical patent/EP0491444A1/de
Application granted granted Critical
Publication of EP0491444B1 publication Critical patent/EP0491444B1/de
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
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/04—Balanced-flue arrangements, i.e. devices which combine air inlet to combustion unit with smoke outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2211/00—Flue gas duct systems
    • F23J2211/10—Balanced flues (combining air supply and flue gas exhaust)
    • F23J2211/101—Balanced flues (combining air supply and flue gas exhaust) with coaxial duct arrangement

Definitions

  • the invention relates to a supply and exhaust combination for respectively combustion air and combustion gas of a burner.
  • Such combinations are generally used as wall or roof passage in combination with for instance a central heating boiler.
  • the combustion gas exhaust pipe is received in the air supply pipe.
  • the air therefore flows towards the burner through the space of substantially annular section between the exhaust pipe and the supply pipe.
  • the object of the invention is to provide a supply and exhaust combination of the type described above which under normal conditions of use results in a smaller difference between the maximum and minimum pressure at the location of the burner.
  • a marked pressure difference occurs between the positions on either side of the partition wall, which can be formed for example by a hood screening the air inlet opening, a pressure compensating air flow occurs via the pressure equalizing opening, so that the pressure difference at the position of the air inlet opening and gas exhaust opening only has a limited effect in the vicinity of the burner.
  • a very favourable further development of the invention is characterized in claim 2.
  • a permanently drawing hood is per se known and has the effect that an underpressure is generated therewithin irrespective of the wind direction. This underpressure therefore prevails both at the gas exhaust opening and at the end of the pressure equalizing channel.
  • An air flow hereby occurs through the air channel in the direction towards the permanently drawing hood. In the locally smaller section of the air channel a pressure fall occurs due to this flow.
  • a strong underpressure in the hood results in a relatively strong air flow through the air channel and thus a relatively large pressure fall at the point of the smaller section.
  • a corresponding lower pressure consequently prevails at the location of the air inlet. With suitable dimensioning a pressure difference between the air inlet and the gas outlet virtually independent of wind influence can be achieved in this manner.
  • a favourable embodiment with a symmetrical structure which therefore has an operation independent of the wind direction is characterized in claim 3.
  • a further favourable embodiment is herein characterized in claim 4.
  • the smaller section or constriction can be adjusted in a simple manner by shifting the partition wall relative to the outer edge of the air supply pipe.
  • a situation can simply be created thereon wherein a maximum pressure insensitivity is obtained.
  • the constriction and opening operating as venturi provide equalization of the pressure difference in the supply pipe and exhaust pipe.
  • a lowering of pressure will occur in the air supply pipe due to the stronger venturi action at the point of the constriction, whereby the pressure difference over the burner therefore decreases again and the correct conditions at that location thus furthered.
  • the pressure in the exhaust pipe increases due to wind attack on the outer end of the exhaust pipe, this raised pressure will progress via the opening in the wall thereof into the supply pipe so that the final pressure difference over the burner is only slightly affected.
  • step from claim 6 Use of the step from claim 6 further reinforces this latter effect.
  • the wind in the exhaust pipe blows inward it will be immediately guided through the openings partly into the exhaust pipe, whereby any pressure build-up occurs simultaneously in the exhaust pipe and the supply pipe and the pressure difference over the burner is therefore affected only slightly.
  • the placing of the constriction close to the outer end of the exhaust pipe has the advantage that the combustion gases there are already partially cooled and have thereby obtained a greater density and lower flow speed.
  • the flow resistance caused by the constriction which is related to the square of the flow speed, is thus of little significance.
  • An additional advantage of the device according to the invention is that the combustion gases are mixed with relatively dry outside air, whereby the dew-point is raised and formation of ice deposit on the normally arranged fall wind plate remains limited.
  • the embodiment as characterized in claim 7 is favourable because the flow resistance for the combustion gas in the direction towards the outside is hereby markedly smaller than the flow resistance to which the wind is subjected in the opposite direction. It is possible to speak here of a certain one-way valve action.
  • Fig. 1 shows a schematic view of a supply and exhaust combination according to the invention, as applied in a combustion boiler.
  • Fig. 2 shows in partially broken away perspective view the supply and exhaust combination in more detail.
  • Fig. 3 shows a cross section according to III-III in fig. 2.
  • Fig. 4 shows a longitudinal section of the upper part of a supply and exhaust combination according to another embodiment of the invention.
  • Fig. 1 shows schematically a central heating combustion boiler 2 which comprises a burner 3 and to which is connected a combustion air supply 4 and a combustion gas exhaust 5.
  • This supply and exhaust are combined in an air supply and combustion gas exhaust combination 1.
  • This combination 1 is carried through a roof 13 in sealed manner by means of a roof passage 12. A closed system is thus obtained in which the gas flow is substantially maintained by a fan 6.
  • the air supplied through the supply 4 combusts together with gas in the burner 3 and the heat thereby released is given off in the boiler 2 in a heat exchanger 7 to a heat transport fluid such as water.
  • Fig. 2 shows the structure of the supply and exhaust combination 1 in more detail.
  • This combination 1 consists of an exhaust pipe 10 which in the present embodiment takes a double-walled form and is received in a supply pipe 11. Close to the bottom end the pipes 10 and 11 are provided with connections 14 and 15 respectively which are closed off relative to one another. Use is made for this purpose of an adaptor part 16 which forms a closed connection between the cylinder wall-shaped channel between the pipes 10 and 11 and the connection 15.
  • the outer end of the exhaust pipe 10 extends slightly further than the outer end of the supply pipe 11.
  • a hood 17 which screens the outer end of the supply pipe from the rain.
  • the hood 17 forms a partition wall which extends transversely of the exhaust pipe 10 and mutually separates the gas exhaust opening and the air inlet opening at the respective ends of the exhaust pipe 10 and the supply pipe 11. This partition wall formed by the hood 17 prevents combustion gas entering the air inlet.
  • Arranged round the supply pipe 11 close to the outer end is another plate 18 so that between the lower edge of the hood 17 and the plate 18 a supply opening remains free through which the combustion air can flow inside into the supply pipe 11. This is indicated with arrow 25.
  • a hood 19 is likewise arranged on top of the exhaust pipe 10 which prevents rain entering.
  • a pressure equalizing channel is formed that extends from close to the air inlet opening to a position close to the gas exhaust opening.
  • the pressure equalizing channel is formed in this embodiment by openings 20 formed in the wall of the exhaust pipe 10. As shown, the openings 20 are defined in that the wall of the pipe 10 is pressed inward under two cuts. Constrictions 21 are formed in the gas exhaust pipe 10 by these inwardly pressed portions. This constriction 21 with opening 20 forms a venturi in the pipe 10 so that due to the gas flow 22 through the pipe 10 a suction occurs at the point of the openings 20.
  • Another compensating effect can be that at an increased gas exhaust speed, designated with arrow 22, an extra suction occurs through the openings 20 whereby the pressure in the supply pipe 11 falls, which thus gives a compensating effect.
  • Another favourable action of the device according to the invention is that when as a result of wind pressure air flows inside the exhaust pipe 10 according to arrow 23, a portion of this air will be diverted directly through the openings 20 to the supply pipe 11 so that the pressure rise due to this wind attack is evenly distributed over the supply and exhaust pipe, whereby the pressure difference over the burner will remain substantially the same.
  • the supply and exhaust combination 30 partially shown in figure 4 corresponds in significant measure with the embodiment described with reference to the preceding figures. Only the manner in which the pressure equalizing channel is formed differs, and only the parts of this embodiment 30 relating to this difference will therefore be discussed.
  • the supply and exhaust combination 30 likewise comprises an air supply pipe 31 with a combustion gas exhaust pipe 32 received therein.
  • the pipes 31 and 32 both have a double-walled form.
  • An air inlet opening 34 is defined at the top end of the air supply pipe 31 and a gas exhaust opening 35 is defined at the top end of the gas exhaust pipe 32.
  • Arranged round the gas exhaust opening 35 is a per se known permanently drawing hood 36 which generates an underpressure irrespective of the angle of the wind, thus also in the case of fall wind.
  • Fixed round the gas exhaust pipe above the air inlet opening 34 is a hood 33 which forms the partition wall between the gas exhaust opening 35 and the air inlet opening 34.
  • a plate 37 which leaves open only a relatively narrow annular opening around the pipe 31. This plate 37 thus forms a wind barrier.
  • a pipe portion 38 Arranged above the inlet opening 34 around the gas exhaust pipe 32 is a pipe portion 38 that forms an annular pressure equalizing channel 39 that extends from close to the gas exhaust opening 35 to a position close to the air supply opening 34.
  • the hood 33 is fixed to this pipe portion 38.
  • the annular opening 40 in the plate 37 already forms a constriction of the above described air channel which improves adjustability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Air Supply (AREA)
  • Gas Burners (AREA)
EP19910203330 1990-12-17 1991-12-17 Kombinierte Vebrennungsluftzu- und Abgasabfuhr Expired - Lifetime EP0491444B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9002786A NL9002786A (nl) 1990-12-17 1990-12-17 Gecombineerde branderluchttoevoer en -verbrandingsgasafvoer.
NL9002786 1990-12-17

Publications (2)

Publication Number Publication Date
EP0491444A1 true EP0491444A1 (de) 1992-06-24
EP0491444B1 EP0491444B1 (de) 1994-09-28

Family

ID=19858159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910203330 Expired - Lifetime EP0491444B1 (de) 1990-12-17 1991-12-17 Kombinierte Vebrennungsluftzu- und Abgasabfuhr

Country Status (3)

Country Link
EP (1) EP0491444B1 (de)
DE (1) DE69104335T2 (de)
NL (1) NL9002786A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0634610A1 (de) * 1993-07-15 1995-01-18 MEULINK & GROL B.V. Kombinierte Verbrennungsluft-Zu/Abgas-Abfuhr
EP0654638A1 (de) * 1993-11-24 1995-05-24 Ubbink B.V. Abfuhraufbau für geschlossene Gasheizgeräte
EP0685689A1 (de) 1994-06-03 1995-12-06 Muelink & Grol B.V. Kombiniertes Luftzufuhr- und Abgasabfuhrsystem für geschlossene Verbrennungsgeräte
NL1001077C2 (nl) * 1995-08-28 1997-03-03 Muelink & Grol Bv Van weerstandsorganen voorzien fluïdumvoerend kanaalelement alsmede van weerstandsorganen voorzien hulsdeel voor aanbrenging op een dergelijk kanaalelement.
DE29606539U1 (de) * 1996-04-10 1997-08-07 Interactive Holding Bv Aufsatz für ein Abgasrohr einer Heizungsanlage
US5680856A (en) * 1993-11-24 1997-10-28 Ubbink Nederland B.V. Discharge structure for closed gas appliances
US7066170B1 (en) 2000-10-31 2006-06-27 Travis Industries, Inc. Apparatuses and methods for balancing combustion air and exhaust gas for use with a direct-vent heater appliance
GB2528982A (en) * 2014-08-08 2016-02-10 Ventive Ltd A cowl for a ventilation system
EP2489936A3 (de) * 2011-02-21 2017-11-29 DRU Verwarming B.V. Geschlossenes Herdsystem mit Zwangsluftstrom
BE1024867B1 (nl) * 2016-12-23 2018-07-31 Debatra Bvba Vrijstaande gashaard

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9400659A (nl) † 1994-04-25 1995-12-01 Muelink & Grol Bv Samenstel van luchttoevoer en/of verbrandingsgasafvoer voor aansluiting op een haard.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700395A (nl) * 1987-02-17 1988-09-16 Cox Geelen Bv Schoorsteenkap.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700395A (nl) * 1987-02-17 1988-09-16 Cox Geelen Bv Schoorsteenkap.

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9301246A (nl) * 1993-07-15 1995-02-01 Muelink & Grol Bv Gecombineerde branderluchttoevoer en verbrandingsgasafvoer.
EP0634610A1 (de) * 1993-07-15 1995-01-18 MEULINK & GROL B.V. Kombinierte Verbrennungsluft-Zu/Abgas-Abfuhr
US5680856A (en) * 1993-11-24 1997-10-28 Ubbink Nederland B.V. Discharge structure for closed gas appliances
EP0654638A1 (de) * 1993-11-24 1995-05-24 Ubbink B.V. Abfuhraufbau für geschlossene Gasheizgeräte
NL9302032A (nl) * 1993-11-24 1995-06-16 Ubbink Nederland Bv Uitmondingsconstructie voor gesloten gastoestellen.
EP0930463A3 (de) * 1993-11-24 1999-10-20 Ubbink B.V. Abfuhraufbau für geschlossene Gasheizgeräte
EP0930463A2 (de) * 1993-11-24 1999-07-21 Ubbink B.V. Abfuhraufbau für geschlossene Gasheizgeräte
EP0685689A1 (de) 1994-06-03 1995-12-06 Muelink & Grol B.V. Kombiniertes Luftzufuhr- und Abgasabfuhrsystem für geschlossene Verbrennungsgeräte
EP0762054A1 (de) * 1995-08-28 1997-03-12 Muelink & Grol B.V. Druckring für Schornstein
NL1001077C2 (nl) * 1995-08-28 1997-03-03 Muelink & Grol Bv Van weerstandsorganen voorzien fluïdumvoerend kanaalelement alsmede van weerstandsorganen voorzien hulsdeel voor aanbrenging op een dergelijk kanaalelement.
DE29606539U1 (de) * 1996-04-10 1997-08-07 Interactive Holding Bv Aufsatz für ein Abgasrohr einer Heizungsanlage
US7066170B1 (en) 2000-10-31 2006-06-27 Travis Industries, Inc. Apparatuses and methods for balancing combustion air and exhaust gas for use with a direct-vent heater appliance
EP2489936A3 (de) * 2011-02-21 2017-11-29 DRU Verwarming B.V. Geschlossenes Herdsystem mit Zwangsluftstrom
GB2528982A (en) * 2014-08-08 2016-02-10 Ventive Ltd A cowl for a ventilation system
GB2528982B (en) * 2014-08-08 2020-09-02 Ventive Ltd A cowl for a ventilation system
BE1024867B1 (nl) * 2016-12-23 2018-07-31 Debatra Bvba Vrijstaande gashaard

Also Published As

Publication number Publication date
NL9002786A (nl) 1992-07-16
DE69104335D1 (de) 1994-11-03
EP0491444B1 (de) 1994-09-28
DE69104335T2 (de) 1995-02-16

Similar Documents

Publication Publication Date Title
EP0491444B1 (de) Kombinierte Vebrennungsluftzu- und Abgasabfuhr
US4652233A (en) Ground flare stack
CA1080987A (en) Breather vent for vapor vent valve
US4899726A (en) Furnace inducer outlet elbow
US4682579A (en) Condensate overflow control for furnace
CA2073077A1 (en) Power blower ventilated hot gas water heater assembly with ambient air mixing means
US4450901A (en) Heat recovery attachment for a heating apparatus
US3522767A (en) Adjustable chimney t
US4803931A (en) Flue restrictor
CA2314769C (en) Combustion air intake apparatus for fuel-fired, direct vent heating appliance
US4403599A (en) Spillage damper for a combustion system
CA2184335A1 (en) Cross-flow cooling tower with reduced upper inboard fill section
US4346845A (en) Gas burner
EP0685689A1 (de) Kombiniertes Luftzufuhr- und Abgasabfuhrsystem für geschlossene Verbrennungsgeräte
CA1170199A (en) Combined inlet and outlet fitting
EP0979973B1 (de) Mauerdurchführung mit Rand zur Verhinderung der Rezirkulation
EP0533282B1 (de) Auslasssystem für Verbrennungsgase
JP4009365B2 (ja) 湯沸器から排出される排気を厨房ダクト側に排出するための排気装置
FR2525746A1 (fr) Unite de chauffage et d'aeration
EP0634610A1 (de) Kombinierte Verbrennungsluft-Zu/Abgas-Abfuhr
JP4324888B2 (ja) 吸排気弁
NO159986B (no) Arrangement til overfoering av en person- og/eller lastenhet fra og til en rigg eller annen installasjon paa sjoeen.
US3221730A (en) Draft diverter hoods
JPH0359398A (ja) 熱交換器
JPS5919166Y2 (ja) 空気弁

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: A1

Designated state(s): BE DE FR GB NL

17P Request for examination filed

Effective date: 19921224

17Q First examination report despatched

Effective date: 19930521

RIN1 Information on inventor provided before grant (corrected)

Inventor name: OVERMAN, PAUL TH. J.

Inventor name: BARENDREGT, J.C.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB NL

REF Corresponds to:

Ref document number: 69104335

Country of ref document: DE

Date of ref document: 19941103

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: MUELINK & GROL B.V.

Effective date: 19950428

NLR1 Nl: opposition has been filed with the epo

Opponent name: MUELINK & GROL B.V.

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLBL Opposition procedure terminated

Free format text: ORIGINAL CODE: EPIDOS OPPC

PLBL Opposition procedure terminated

Free format text: ORIGINAL CODE: EPIDOS OPPC

PLBM Termination of opposition procedure: date of legal effect published

Free format text: ORIGINAL CODE: 0009276

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

Free format text: STATUS: OPPOSITION PROCEDURE CLOSED

27C Opposition proceedings terminated

Effective date: 19960624

NLR2 Nl: decision of opposition
NLS Nl: assignments of ep-patents

Owner name: BURGERHOUT B.V.;ALCOA NEDERLAND B.V.

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20031231

Year of fee payment: 13

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

Ref country code: FR

Payment date: 20040629

Year of fee payment: 13

Ref country code: DE

Payment date: 20040629

Year of fee payment: 13

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

Ref country code: NL

Payment date: 20040630

Year of fee payment: 13

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

Ref country code: BE

Payment date: 20040706

Year of fee payment: 13

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: 20041217

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

Ref country code: BE

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

Effective date: 20041231

BERE Be: lapsed

Owner name: *BURGERHOUT B.V.

Effective date: 20041231

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: 20050701

Ref country code: DE

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

Effective date: 20050701

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

Effective date: 20041217

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

Ref country code: FR

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

Effective date: 20050831

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

Effective date: 20050701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

BERE Be: lapsed

Owner name: *BURGERHOUT B.V.

Effective date: 20041231