EP1106920A1 - Mélangeur pour bruleur à gaz - Google Patents
Mélangeur pour bruleur à gaz Download PDFInfo
- Publication number
- EP1106920A1 EP1106920A1 EP00403406A EP00403406A EP1106920A1 EP 1106920 A1 EP1106920 A1 EP 1106920A1 EP 00403406 A EP00403406 A EP 00403406A EP 00403406 A EP00403406 A EP 00403406A EP 1106920 A1 EP1106920 A1 EP 1106920A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring
- wall
- mixer according
- air passage
- primary air
- 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
Links
Images
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
- F23D14/46—Details
- F23D14/62—Mixing devices; Mixing tubes
- F23D14/64—Mixing devices; Mixing tubes with injectors
Definitions
- the invention relates to the field of mixers for gas, in particular for gas burners for domestic cooking ovens or domestic hob.
- a gas burner mixer allows production of a mixture of gas and atmospheric primary air. The mixture thus produced is intended to supply the flame of a gas burner, possibly with additional addition of atmospheric secondary air.
- the mixer has a ring calibration to calibrate the primary air passage section in order to fine-tune the value of the ratio between the quantity of gas and the quantity primary air.
- a disadvantage of the mixer according to the prior art is that a slight positioning error of the ring, for example when mass production of the oven or hob, would cause substantial difference in value between the effective ratio between the quantity of gas and the quantity of primary air and the theoretical nominal ratio, i.e. that the positioning tolerance of the calibration ring is low.
- the invention proposes the use of a mixer which can be calibrated using a special calibration ring or using a shape particular wall of the mixer, to allow calibration of the mixer which would remain correct even in the presence of a slight error in positioning of the calibration ring. So the tolerance of positioning of the calibration ring is significantly improved.
- a mixer for a gas burner in form of conduit for gaseous fluid delimited by at least one wall having a primary air passage section so as to allow production of a mixture of gas and primary air, comprising a ring which is movable relative to the wall and which calibrates the air passage section primary, characterized in that the ring has at least one opening arranged in such a way that for at least one of the positions of the ring, a displacement of the ring around said position causes a variation of the surface of the intersection of the opening and the cross-section of primary air passage.
- the opening is preferably a notch but can also be a hole.
- the opening can also be located on the wall of the duct, to which case, the calibration ring does not need to have an opening, a conventional calibration ring, for example of the cylindrical type, is suitable.
- a mixer for gas burner, duct-shaped for gaseous fluid delimited by at least a wall having a primary air passage section so as to allow the production of a mixture of gas and primary air, comprising a ring which is movable relative to the wall and which calibrates the section of primary air passage, characterized in that the wall has at least a notch which is also a projection of the air passage section primary and which is arranged in such a way that for at least one of the ring positions, movement of the ring around said position causes a variation of the surface of the intersection of the notch and the Ring.
- FIG. 1A schematically represents a mixer for gas burner according to the invention, the ring being shown in a first preferential calibration position.
- the mixer is shaped like conduit 1 for gaseous fluid.
- the duct 1 is delimited by a wall 10.
- the wall 10 has a section 11 for atmospheric primary air passage from outside the mixer. Section 11 allows the realization of a mixture between the combustion gas and the atmospheric primary air.
- the gas comes from an injector 5 carried by an injector holder 6.
- the injector 5 and its injector holder 6 are located inside the duct 1.
- the small arrow right indicates gas flow while the two large arrows curves indicate the flow of atmospheric primary air at section 11 passage.
- the conduit 1 preferably has a cylindrical shape which is best suited but other shapes are possible.
- the dashed line axis represents the axis of symmetry of the duct 1.
- the dotted lines represent hidden parts of the mixer.
- the conduit 1 is preferably a so-called “Venturi effect” conduit.
- the calibration of the primary air passage section 11 is particularly critical for this type of mixer.
- a calibration ring 2 is used to calibrate section 11 of primary air passage and thus regulate the ratio between the quantities of gas and primary air.
- the ring 2 is movable by relative to the wall 10 of the duct 1.
- the ring 2 thus makes it possible to obstruct more or less completely the primary air passage section 11.
- Ring 2 has one or more openings 20 for calibrating of the mixer with a positioning tolerance of the ring 2 which is satisfactory and much better than in the prior art.
- the openings 20 are preferably one or more notches as on the Figure 1A.
- the calibration position shown in Figure 1A provides a tolerance of positioning of the calibration ring 2 which is more important than in the prior art.
- the notch 20 actually allows calibration of the mixer with a positioning tolerance of the calibration ring 2 which is improved, the notch 20 is arranged so that, for at least one of the positions of the ring 2, namely a calibration position, a displacement of the ring 2 around said position causes a variation of the surface of the intersection of the notch 20 and the air passage section 11 primary.
- this condition concerning the notch 20 is realized by the fact that the tip 22 of notch 20 covers wall 10.
- FIG. 1B represents the same mixer as in FIG. 1A, the ring 2 being represented in another position.
- the position of the ring 2 in FIG. 1B corresponds to a second preferred calibration position.
- the notch 20 is located in the wall 10 of the conduit 1, in which case the ring 2 may not have a notch and be in the form of a complete hollow cylinder for example.
- the case where several notches 20 are distributed both on the ring 2 and on the wall 10 of the conduit 1 is also conceivable.
- the notch 20 is preferably bevelled.
- Ring 2 is preferably longitudinally sliding relative to the duct 1, that is to say, it slides along the axis of the duct 1.
- the ring 2 is advantageously arranged outside the duct 1 for reasons practical accessibility.
- the ring 2 has one end 21 located on the side of notch 20.
- the line in double dotted lines connecting the different parts of the end 21 represents the shape that the ring 2 would have if it was not indented.
- the interior of the notch 20 is the demarcated area on the one hand by the sides of the notch 20 and on the other hand by the line in double dotted lines.
- the intersection between notch 20 and section 11 primary air passage is the intersection between the interior of the notch 20 and the primary air passage section 11, i.e. the part of the section 11 primary air passage which is located inside the notch 20. If the ring 2 also includes material at the level of the line double dotted lines for example, the notch 20 becomes a hole.
- a preferred practical embodiment provides for the use of a stop system 3 sliding in an oblong hole 4, for example a hole oblong 4 of the ring 2 in which a screw 4 can slide before being fixed by screwing in the duct 1, once the desired setting has been obtained.
- the ring 2 is advantageously made of metal, for example stainless steel.
- Figure 2 shows the ring 2 extracted from the mixer shown in Figures 1A and 1B.
- the calibration ring 2 has preferably one or more notches 20 advantageously bevelled to further increase the positioning tolerance of ring 2 during the calibration of section 11 of primary air passage.
- the ring 2 preferably has two or four notches 20 distributed symmetrically around the ring 2 which then has a axial symmetry.
- the shape of the notch 20 preferably flares out sufficiently progressive that a given precision of calibration of the primary air passage section 11 is obtained with a given tolerance of relative positioning of the ring 2 and of the wall 10.
- the adjustment of the ring 2 on the duct 1 will generally be carried out in factory, when manufacturing the oven or hob. During this operation, ring 2 can be adjusted with a slight error in positioning which must not lead to a significant variation of the ratio between the quantities of gas and primary air.
- a given tolerance of relative positioning of the ring 2 and of the wall 10 will cause a slight error in the calibration of the section 11 of primary air passage, error which should only lead to variation in the ratio between the quantities of gas and primary air which is negligible or acceptable for the intended application.
- the notch 20 has edges substantially straight bevelled as in Figure 3, it then has a bevel angle ⁇ small enough that a given precision of calibration of the primary air passage section 11 is obtained with a given tolerance of relative positioning of the ring 2 and of the wall 10.
- FIG. 3 schematically represents a profile view of a preferred ring of a mixer according to the invention, with ribs preferential.
- the ring 2 is cylindrical, it has a length I worth about 35mm and an outside diameter ⁇ worth about 20mm.
- Each of the two notches 20 has a length worth half of the length of the ring 2.
- the bottom of the notch 20 is flat and of width e worth approximately 7mm.
- the angle ⁇ of the edges of the notch 20 is approximately 8 degrees.
- the relative movement of the ring 2 and the wall 10 is advantageously sufficient to allow several adjustment zones corresponding respectively to different types of gas used. That is to say, that from one end to the other of this displacement race, the variations in ratio between the quantities of gas and primary air that are obtained are sufficient for the same type of mixer and ring 2 to be used on gas burners operating with gas types different, for example either natural gas or liquefied petroleum gas, or manufactured gases. So the same mixer and the same ring can be used in the assembly of ovens or hobs different.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
Description
- la figure 1A représente schématiquement un mode de réalisation préférentiel d'un mélangeur selon l'invention, la bague étant représentée dans une première position de calibrage préférentielle ;
- la figure 1B représente schématiquement un mode de réalisation préférentiel d'un mélangeur selon l'invention, la bague étant représentée dans une deuxième position de calibrage préférentielle ;
- la figure 2 représente schématiquement la bague de calibrage isolée du mélangeur représenté aux figures 1A ou 1B ;
- la figure 3 représente schématiquement une vue de profil d'une bague préférentielle d'un mélangeur selon l'invention, avec des côtes préférentielles.
Claims (13)
- Mélangeur pour brûleur à gaz, en forme de conduit (1) pour fluide gazeux délimité par au moins une paroi (10) présentant une section (11) de passage d'air primaire de manière à permettre la réalisation d'un mélange de gaz et d'air primaire, comportant une bague (2) qui est mobile par rapport à la paroi (10) et qui calibre la section (11) de passage d'air primaire, caractérisé en ce que la bague (2) comporte au moins une ouverture (20), disposée de manière à ce que, pour l'une au moins des positions de la bague (2), un déplacement de la bague (2) autour de ladite position entraíne une variation de la surface de l'intersection de l'ouverture (20) et de la section (11) de passage d'air primaire.
- Mélangeur selon la revendication 1, caractérisé en ce que l'ouverture (20) est un trou.
- Mélangeur selon la revendication 1, caractérisé en ce que l'ouverture (20) est une échancrure.
- Mélangeur pour brûleur à gaz, en forme de conduit (1) pour fluide gazeux délimité par au moins une paroi (10) présentant une section (11) de passage d'air primaire de manière à permettre la réalisation d'un mélange de gaz et d'air primaire, comportant une bague (2) qui est mobile par rapport à la paroi (10) et qui calibre la section (11) de passage d'air primaire, caractérisé en ce que la paroi (10) comporte au moins une échancrure (20) qui est aussi une saillie de la section (11) de passage d'air primaire et qui est disposée de manière à ce que, pour l'une au moins des positions de la bague (2), un déplacement de la bague (2) autour de ladite position entraíne une variation de la surface de l'intersection de l'échancrure (20) et de la bague (2).
- Mélangeur selon l'une des revendications 3 ou 4, caractérisé en ce que l'échancrure (20) est biseautée.
- Mélangeur selon la revendication 5, caractérisé en ce que l'échancrure (20) présente des bords biseautés sensiblement rectilignes et un angle (α) de biseautage suffisamment petit pour qu'une précision donnée de calibrage de la section (11) de passage d'air primaire soit obtenue avec une tolérance donnée de positionnement relatif de la bague (2) et de la paroi (10).
- Mélangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que le conduit (1) est à effet Venturi.
- Mélangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que la bague (2) est coulissante longitudinalement par rapport au conduit (1) et en ce que la bague (2) est disposée à l'extérieur du conduit (1).
- Mélangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que la bague (2) comporte plusieurs ouvertures (20) réparties de manière à ce que la bague (2) présente une symétrie axiale.
- Mélangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que la forme de l'ouverture (20) s'évase de manière suffisamment progressive pour qu'une précision donnée de calibrage de la section (11) de passage d'air primaire soit obtenue avec une tolérance donnée de positionnement relatif de la bague (2) et de la paroi (10).
- Mélangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que le déplacement relatif de la bague (2) et de la paroi (10) est limité en débattement par un système de butée (3) coulissant dans un trou oblong (4).
- Mélangeur selon l'une quelconque des revendications précédentes, caractérisé en ce que la bague (2) est en métal.
- Brûleur à gaz caractérisé en ce qu'il comporte un mélangeur selon l'une quelconque des revendications précédentes et en ce que la course de déplacement relatif de la bague (2) et de la paroi (10) est suffisante pour permettre plusieurs zones de réglage correspondant respectivement à différents types de gaz utilisés.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9915621A FR2802288B1 (fr) | 1999-12-10 | 1999-12-10 | Melangeur pour bruleur a gaz |
| FR9915621 | 1999-12-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1106920A1 true EP1106920A1 (fr) | 2001-06-13 |
| EP1106920B1 EP1106920B1 (fr) | 2003-09-17 |
Family
ID=9553127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00403406A Expired - Lifetime EP1106920B1 (fr) | 1999-12-10 | 2000-12-05 | Mélangeur pour bruleur à gaz |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1106920B1 (fr) |
| DE (1) | DE60005279D1 (fr) |
| FR (1) | FR2802288B1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2675869A (en) * | 1951-04-18 | 1954-04-20 | Surface Combustion Corp | Gas mixer |
| US2694445A (en) * | 1949-06-08 | 1954-11-16 | Lee C Sassmanhausen | Mixing tube for gas burners |
| US2815070A (en) * | 1955-04-07 | 1957-12-03 | Harper Wyman Co | Venturi tube with air shutter |
| US4118175A (en) * | 1976-12-27 | 1978-10-03 | Robertshaw Control Company | Fuel burner, arrangement and sleeve therefor and methods |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE916661C (de) * | 1948-12-29 | 1954-08-16 | Otto Koetter G M B H | Brenner |
-
1999
- 1999-12-10 FR FR9915621A patent/FR2802288B1/fr not_active Expired - Fee Related
-
2000
- 2000-12-05 EP EP00403406A patent/EP1106920B1/fr not_active Expired - Lifetime
- 2000-12-05 DE DE60005279T patent/DE60005279D1/de not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2694445A (en) * | 1949-06-08 | 1954-11-16 | Lee C Sassmanhausen | Mixing tube for gas burners |
| US2675869A (en) * | 1951-04-18 | 1954-04-20 | Surface Combustion Corp | Gas mixer |
| US2815070A (en) * | 1955-04-07 | 1957-12-03 | Harper Wyman Co | Venturi tube with air shutter |
| US4118175A (en) * | 1976-12-27 | 1978-10-03 | Robertshaw Control Company | Fuel burner, arrangement and sleeve therefor and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| DE60005279D1 (de) | 2003-10-23 |
| EP1106920B1 (fr) | 2003-09-17 |
| FR2802288A1 (fr) | 2001-06-15 |
| FR2802288B1 (fr) | 2002-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8727389B2 (en) | Gas appliance | |
| EP0334736B1 (fr) | Brûleurs à gaz | |
| FR2671856A1 (fr) | Dome d'ensemble de combustion. | |
| CA2647145A1 (fr) | Dispositif de guidage d'un element dans un orifice d'une paroi de chambre de combustion de turbomachine | |
| BE1012810A3 (fr) | Bruleur a gaz a ventilation forcee pour chaudiere. | |
| EP1106920B1 (fr) | Mélangeur pour bruleur à gaz | |
| US7985068B2 (en) | Gas appliance | |
| FR2705088A3 (fr) | Cartouche pour mélanger des pâtes constituées de deux composants. | |
| EP2040001B1 (fr) | Chambre de combustion annulaire de moteur à turbine à gaz | |
| JPH0523331B2 (fr) | ||
| EP1377773B1 (fr) | Joint articule destine a relier entre elles deux conduites de fluide | |
| FR2719360A1 (fr) | Perfectionnements aux bruleurs à gaz. | |
| EP0574357A1 (fr) | Dispositif d'assemblage par pincement d'une pièce élastiquement compressible | |
| EP0216693B1 (fr) | Dispositif d'alimentation en gaz des brûleurs d'un appareil de cuisson | |
| US812627A (en) | Gas-regulating device. | |
| FR2505454A3 (fr) | Bruleur atmospherique tous gaz, notamment pour les appareils menagers chauffes au gaz | |
| CA2016471A1 (fr) | Tete de coupe a jet d'oxygene | |
| US1138613A (en) | Valve. | |
| EP0851158A1 (fr) | Joint statique métallique en U | |
| EP0148717B1 (fr) | Elément modulaire de conduit d'un fluide isolé thermiquement | |
| EP0810400B1 (fr) | Projecteur, notamment pour véhicule automobile, présentant une structure mécanique perfectionnée | |
| US5938428A (en) | Spark igniter mechanism | |
| EP0713044A1 (fr) | Elément tubulaire soudé pour un conduit de gaz chaud, et son procédé de réalisation | |
| JP6494063B6 (ja) | 調理用バーナー、及び炙り加工方法 | |
| US12013068B2 (en) | Connection for fluid with two welds |
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): DE ES FR GB IT |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| 17P | Request for examination filed |
Effective date: 20010831 |
|
| AKX | Designation fees paid |
Free format text: DE ES FR GB IT |
|
| 17Q | First examination report despatched |
Effective date: 20020325 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;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: 20030917 Ref country code: GB 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: 20030917 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REF | Corresponds to: |
Ref document number: 60005279 Country of ref document: DE Date of ref document: 20031023 Kind code of ref document: P |
|
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20031218 |
|
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20031228 |
|
| GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20030917 |
|
| RIC2 | Information provided on ipc code assigned after grant |
Ipc: 7F 23D 14/64 A |
|
| RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: BRANDT INDUSTRIES |
|
| 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 |
Effective date: 20040618 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: CD Owner name: FAGORBRANDT SAS, FR Effective date: 20110826 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20130124 Year of fee payment: 13 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20140829 |
|
| 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: 20131231 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP Owner name: GROUPE BRANDT, FR Effective date: 20160420 |