WO2002061336A1 - Melangeur air-gaz ameliore - Google Patents

Melangeur air-gaz ameliore Download PDF

Info

Publication number
WO2002061336A1
WO2002061336A1 PCT/IT2001/000087 IT0100087W WO02061336A1 WO 2002061336 A1 WO2002061336 A1 WO 2002061336A1 IT 0100087 W IT0100087 W IT 0100087W WO 02061336 A1 WO02061336 A1 WO 02061336A1
Authority
WO
WIPO (PCT)
Prior art keywords
duct
mixer device
holes
gas
shutter means
Prior art date
Application number
PCT/IT2001/000087
Other languages
English (en)
Inventor
Raffaele Zocchi
Roberto Dorigo
Filiberto Rimondo
Original Assignee
Sit La Precisa S.P.A.
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 Sit La Precisa S.P.A. filed Critical Sit La Precisa S.P.A.
Priority to EP01912119A priority Critical patent/EP1356234B1/fr
Priority to DE60129164T priority patent/DE60129164T2/de
Priority to KR1020037010117A priority patent/KR100813366B1/ko
Publication of WO2002061336A1 publication Critical patent/WO2002061336A1/fr

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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • 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, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes

Definitions

  • the present invention relates to an improved air-gas mixer device according to the preamble to the main claim.
  • devices of this type are used in boilers and similar apparatus mainly for domestic use, comprising gas burners, particularly with forced ventilation.
  • the metering of the combustible mixture delivered by the injection of gas into an air flow is regulated in dependence on the loss in pressure detected at a constriction point of the duct through which the flows of air and gas of the mixture are admitted.
  • the homogeneity of the air and gas mixture is generally improved by a fan located downstream of the said duct.
  • the problem upon which the present invention is based is that of providing an improved air-gas mixer device which is designed structurally and functionally to prevent all of the problems indicated with reference to the prior art mentioned.
  • Figure 1 is a partially-sectioned, schematic, side elevational view of apparatus equipped with an air-gas mixer device formed in accordance with the present invention
  • Figure 2 is a perspective view showing a detail of the air-gas mixer device according to the invention, on an enlarged scale,
  • FIG. 3 is a perspective view of a variant of the detail of the air-gas mixer device of Figure 2
  • - Figure 4 is a partially-sectioned, schematic side elevational view of apparatus equipped with a second variant of the air-gas mixer device of Figure 1
  • - Figure 5 is a perspective view showing a detail of the air-gas mixer device of Figure 4, on an enlarged scale, and - Figure 6 is a partially-sectioned, perspective view of a further detail of the air-gas mixer device of Figure 5.
  • an air-gas mixer device formed in accordance with the invention particularly for supplying a burner 2 with forced ventilation, is generally indicated 1.
  • the device 1 comprises a tubular, cylindrical body 3 of axis X, having a cylindrical wall 4 and opposed axial ends 3a, 3b.
  • a first, converging duct 5 which extends from the end 3a of the body 3 as far as the opposite end 3b, and by means of which the tubular body 3 is divided into the first, converging duct 5 and a second duct 6, the latter being defined by the cylindrical wall 4 and by an outer lateral surface 7 of the first, converging duct 5.
  • a third duct 13 for the admission of gas into the converging duct 5 is formed coaxially with and inside the converging duct 5.
  • the duct 13 is mounted in the duct 5 by means of a plurality of radial connecting bridge elements 14
  • FIG. 2 The gas is supplied into the third duct 13 by means of a valve unit 17, connected to an external gas-supply mains, at a constant pressure equal to atmospheric pressure.
  • the direction of the delivery flow of gas supplied by the valve unit 17 is indicated by the arrow G in Figure 1.
  • the converging duct 5 is the seat of a primary air flow directed axially through the duct 5 in the direction indicated by the arrow F of Figure 1, from the end 3a towards the opposite end 3b of the tubular body 3. This primary air flow is mixed, in the region of the output section of the first duct 5, with the gas flow emerging from the third duct 13.
  • a radial fan, indicated 8, is driven by drive means 8b, is provided downstream of the tubular body 3, in the direction of the air and/or gas flow, and is arranged with its intake 8a facing the end 3b for the output of the air and gas mixture.
  • the fan 8, by which the primary air and gas flow is drawn in, is enclosed in a box-like body 9 the cover 10 of which is integral with the tubular body 3.
  • the cover 10 is formed integrally with the tubular body 3, the converging duct 5, and the third duct 13, and is produced by pressure die-casting.
  • a mixing chamber 12 defined inside the box-like body 9 between the fan 8 and the tubular body 3 is supplied by the first converging duct 5 and by the second duct 6, as described in greater detail below.
  • the cylindrical wall 4 of the tubular body 3 has a first plurality of through-holes 18 which are arranged at a predetermined angular distance apart and through which a secondary air flow, drawn in by the fan 8 in the direction of the arrow F 2 of Figure 1, is admitted to the second duct 6.
  • the mixing chamber 12 is thus supplied by the secondary air flow as well as by the above-mentioned flow of the gas and primary air mixture .
  • the holes 18, of which there are three in the embodiment described, are preferably aligned circumferentially and spaced apart at regular intervals.
  • the mixer device 1 also comprises first means for choking the holes 18, including a first shutter means 19.
  • the choking achieved by this means is adjustable, as described in detail below.
  • the first shutter means 19 has a first sleeve 20 fitted coaxially on the tubular body 3 and having opposed axial ends 20a, 20b.
  • annular seat 28 is also formed in the shoulder 23, in particular in its surface which is in contact with the shoulder 21 of the first shutter means 19, and a seal 29, for example of the "O-ring" type, is housed therein.
  • the first sleeve 20 has a second plurality of through- holes 22, preferably of similar shape and size to the holes 18 in the cylindrical wall 4 and extending in positions corresponding to those of the holes 18 when the shutter means 19 is fitted on the tubular body 3.
  • the first choking means are operated by an electric motor 25, preferably a stepper motor, by which the shutter means 19 is rotated about the axis X by first drive- transmission means 26, for example, of the crown-wheel and pinion coupling type. This rotation is facilitated by lubricants interposed between the contacting surfaces of the cylindrical wall 4 of the tubular body 3 and of the first sleeve 20.
  • the relative angular distances between the holes 18, and hence correspondingly between the holes 22, is such that the holes 22 for the flow of secondary air into the mixing chamber are movable continuously, by the rotation of the shutter means 19, between a first, fully-closed operative position, in which the holes 18 are closed by portions of the first sleeve 20 interposed circumferentially between the holes 22, and a second, fully-open operative position, that is, a position in which the holes 18 and 22 are superimposed.
  • the flow-rate of secondary air flowing into the second duct 6, and hence into the mixing chamber 12 can thus be modulated between a minimum value substantially equal to zero and a maximum value .
  • a variant of the invention also provides for the above-mentioned choking to be preset, that is, for the first shutter means 19 to be locked relative to the tubular body 3 with a preselected angular positioning, without the provision of any operating actuator.
  • the holes 18 are choked in a manner predefined at the calibration stage to ensure the flow of a preselected flow- rate of secondary air into the duct 6, in dependence on the type of burner 2 fitted.
  • a set of shutter means 19 is provided, each shutter means 19 comprising respective calibrated holes 22 of predetermined cross-section, preferably smaller than the cross-sections of the holes 18.
  • the respective shutter means 19 of the set can thus be mounted in the tubular body 3 alternatively, in dependence on the flow-rate of secondary air to be delivered to the mixing chamber.
  • the electric motor 25 is connected electrically to an electronic control card 27 of the burner 2 and is operatively controlled thereby.
  • Signals correlated with parameters detected by a plurality of sensors, for example, a combustion sensor 30 or a temperature sensor 31, are sent to the control card 27.
  • the motor 8b of the fan 8 is also subject to electronic control by the card 27.
  • a set of stator blades 15 is provided in the annular space between the third duct 13 and the first duct 5.
  • the set of blades 15 comprises a plurality of blades 16 with preselected twist, extending radially from the duct 13 and fixed, at their opposite ends, to the wall 7 of the first duct 5.
  • the blades 16 also have the function of structurally connecting the duct 5 to the duct 13.
  • the blades 16 are stationary and have a curvature of their twist profiles such as to impart a rotational component to the primary air-flow entering the first, converging duct 5.
  • a variant, not shown, on the other hand, has a set of stator blades similar to the set of blades 15, exclusively in the second duct 6 and, in this case, the blades are fixed to the wall 7 of the converging duct 5 at one end and to the cylindrical wall 4 of the tubular body 3 at the other end.
  • sets of stator blades are provided both in the first duct 5 and in the second duct 6.
  • the fan is arranged to have the same direction of rotation as the rotation imparted by the set of stator blades 15.
  • the direction of rotation of the fan is the same as that of the rotational component imparted to the flow of the gas and primary air mixture and/or to the flow of secondary air, the above-mentioned mixture and/or the secondary air is admitted to the fan 8 with very low pressure losses .
  • the air-gas mixer device of the invention is generally indicated 100.
  • the third duct 13 for the admission of gas to the mixing chamber 12 comprises, at one end 13b, a closure base 13a and a cylindrical wall 13d in which a third plurality of through-holes 32 is formed, at the end 13b.
  • These holes 32 are aligned circumferentially and uniformly spaced in the cylindrical wall 13d.
  • the device 100 also comprises second choking means including a second shutter means 33 of similar structure to the first shutter means 19 described above, for choking the third plurality of holes 32 in an adjustable manner.
  • the second shutter means 33 comprises a second sleeve 34 fitted coaxially on the third duct 13.
  • a fourth plurality of radial through-holes 35 is also formed in the second sleeve 34 with an arrangement such as to choke the third ' plurality of holes 32 by angular rotation in the same manner in which the first plurality of holes 18 is choked by the sleeve 20.
  • the gas is admitted to the mixing chamber 12 through the holes 35 in a substantially radial direction relative to the axis X.
  • a connecting arm 36 extends from the second shutter means 33 and is connected, at one of its ends 36a, to the first sleeve 20 in order to fix the second shutter means 33 for rotation with the first shutter means 19.
  • the fixing- together of the two shutter means defines a choking ratio between the holes 18 and the holes 32 by which a ratio is fixed between the flow-rate of secondary air and the flow- rate of gas admitted to the mixing chamber 12.
  • the device of the invention operates as follows .
  • the operation of the fan 8 draws primary air and secondary air into the first, converging duct 5 and into the second duct 6, respectively.
  • the primary air flow passes through the converging duct 5 and is mixed with the gas which emerges from the third duct 13 and the metering of which depends on the signal of the pressure existing in the constricted section of the first duct 5 and on any rotation imparted to the primary air-flow.
  • the mixture formed is then admitted to the mixing chamber 12.
  • the choking of the holes 18 may be further modified, if desired, according to the power demanded from the burner 2, or in dependence on the signals sent by the combustion and/or temperature sensors 30, 31 to the electronic control card.
  • a starting signal for the electric motor 25 is generated by the card 27.
  • the shutter means 19 is thus rotated by the drive-transmission means 26 to the angular position corresponding to the preselected choking of the holes 18 and consequently to the desired value of the flow- rate of secondary air in the duct 6.
  • the secondary air is mixed with the gas and air mixture and the resulting combustible mixture is then delivered to the burner 2.
  • the choking of the holes 18 is preselected at the installation and calibration stage in dependence on the type of boiler installed and on the characteristics of the fan, in order for the flow-rate of secondary air to be optimal.
  • optimal choking of the holes is achieved by the installation of a shutter means in which the cross-section of the holes is suitable for achieving the preselected secondary air flow rate .
  • a rotation of the first shutter means 19 through a predetermined angle, brought about by the electric motor 27, causes a corresponding rotation of the second shutter means 33 through the same angle, by means of the connecting arm 36, so that both the secondary air flow and the flow of gas which are admitted to the mixing chamber 23 are choked by the same movement.
  • the flow-rates of the two flows are thus varied whilst their ratio is kept constant.
  • the invention thus achieves the objects proposed, affording many advantages over the prior art mentioned.
  • a first advantage made clear by tests carried out by the Applicant is that the geometrical characteristics of the system, as well as the admission of a secondary air flow of the type described, which is separate from the primary flow of the air and gas mixture into the mixer device, clearly contribute to the damping of the sound waves emitted by the flame fronts which are generally produced in known devices of this type and which may be audible outside the boiler.
  • a second advantage is that the combined regulation of the flow-rates of the secondary air flow and of the gas flow which can be achieved in the mixer device according to the invention, achieves a significant increase in the effective range of modulation of the flow-rate of the air-gas mixture delivered by the device.
  • the continuously adjustable choking of the secondary air flow enables the fan constantly to be operated close to maximum-efficiency conditions corresponding to a predetermined C0 2 value and to the minimum value of CO and NO x emissions for each preselected flow-rate, even with variations in the power demanded from the burner.
  • the pollutant emissions of the burner supplied by the mixer device of the invention are particularly low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

Mélangeur air-gaz (1, 100) conçu, en particulier, pour des brûleurs à gaz (2) possédant une ventilation forcée. Ce mélangeur est composé d'une chambre de mélange air-gaz (12) servant à produire un mélange combustible devant alimenter le brûleur. Cette chambre (12) est alimentée par un premier flux d'un mélange d'air primaire et de gaz et par un deuxième flux d'air secondaire par l'intermédiaire d'un premier conduit (5) et d'un deuxième conduit (6) respectif. Ce mélangeur comprend des premiers moyens servant à étrangler le premier conduit et/ou le deuxième conduit (6), de manière à effectuer une régulation sélective de la quantité de mélange d'air primaire et de gaz et/ou d'air secondaire alimentant la chambre de mélange (12).
PCT/IT2001/000087 2001-02-01 2001-02-23 Melangeur air-gaz ameliore WO2002061336A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01912119A EP1356234B1 (fr) 2001-02-01 2001-02-23 Melangeur air-gaz ameliore
DE60129164T DE60129164T2 (de) 2001-02-01 2001-02-23 Luftgasmischvorrichtung
KR1020037010117A KR100813366B1 (ko) 2001-02-01 2001-02-23 개량된 공기-가스 혼합기 장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD20001A000023 2001-02-01
IT2001PD000023A ITPD20010023A1 (it) 2001-02-01 2001-02-01 Dispositivo miscelatore aria-gas perfezionato.

Publications (1)

Publication Number Publication Date
WO2002061336A1 true WO2002061336A1 (fr) 2002-08-08

Family

ID=11452190

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2001/000087 WO2002061336A1 (fr) 2001-02-01 2001-02-23 Melangeur air-gaz ameliore

Country Status (7)

Country Link
EP (1) EP1356234B1 (fr)
KR (1) KR100813366B1 (fr)
AT (1) ATE365892T1 (fr)
DE (1) DE60129164T2 (fr)
IT (1) ITPD20010023A1 (fr)
RU (1) RU2262041C2 (fr)
WO (1) WO2002061336A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003088869A2 (fr) 2002-04-19 2003-10-30 Salviac Limited Dispositif médical
WO2003088805A2 (fr) 2002-04-19 2003-10-30 Salviac Limited Dispositif médical
WO2008058640A1 (fr) * 2006-11-14 2008-05-22 Sit La Precisa S.P.A. Procédé de contrôle de la distribution d'un combustible air-gaz à un dispositif brûleur
WO2009087041A3 (fr) * 2008-01-08 2009-09-17 Ln 2 S.R.L. A Socio Unico Dispositif d'entrée pour flux d'air ou de gaz dans une unité ventilateur, en particulier dans des brûleurs à gaz à prémélange
ITPD20090215A1 (it) * 2009-07-22 2011-01-23 Ln 2 Srl Socio Unico Dispositivo miscelatore aria-gas, particolarmente per apparecchi bruciatori a pre-miscelazione.
ITPD20100265A1 (it) * 2010-09-02 2012-03-03 Sit La Precisa Spa Dispositivo miscelatore aria-gas per bruciatori a gas combustibile con premiscelazione
ITMI20101865A1 (it) * 2010-10-12 2012-04-13 Riello Spa Gruppo di alimentazione di una miscela aria/gas
US20130092104A1 (en) * 2009-12-16 2013-04-18 Intergas Heating Assets Bv Fan housing for a fan for supplying a fuel/oxidizer mixture to a burner, insert and supply device therefor
EP3006827A1 (fr) * 2014-10-09 2016-04-13 Robert Bosch Gmbh Mélangeur à plage de modulation élevée et système de prémélange comprenant celui-ci
US20170067644A1 (en) * 2010-06-09 2017-03-09 Continental Appliances, Inc., D.B.A. Procom Heating apparatus with fan
US9829195B2 (en) 2009-12-14 2017-11-28 David Deng Dual fuel heating source with nozzle
US10066838B2 (en) 2006-05-30 2018-09-04 David Deng Dual fuel heating system

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100577524B1 (ko) * 2004-12-24 2006-05-10 린나이코리아 주식회사 보일러의 공기혼합 제어장치
KR101019403B1 (ko) * 2008-08-12 2011-03-07 주식회사 경동네트웍 보일러의 가스-공기 혼합 장치
ES2603421T3 (es) * 2008-09-16 2017-02-27 Siemens Aktiengesellschaft Quemador de gas
IT1391676B1 (it) * 2008-11-07 2012-01-17 Sit La Precisa Spa Con Socio Unico Apparecchio bruciatore a gas con pre-miscelazione
ITMI20121633A1 (it) * 2012-10-01 2014-04-02 Controlling Saving Energy Italia S R L Termostato
ITMI20122008A1 (it) * 2012-11-27 2014-05-28 Polidoro Spa Dispositivo per la gestione del rapporto comburente/combustibile di impianti termotecnici.
RU2511783C1 (ru) * 2012-12-21 2014-04-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный энергетический университет" (ФГБОУ ВПО "КГЭУ") Горелка для сжигания газа
DE102013220954A1 (de) * 2013-10-16 2015-04-16 Robert Bosch Gmbh Heizgerät mit einem von einem Gebläse unterstützten Brenner
DE102017216966A1 (de) 2017-09-25 2019-03-28 Robert Bosch Gmbh Mischeinrichtung für Heizgeräte sowie Heizgeräte mit einer solchen Mischeinrichtung
DE102017216961A1 (de) 2017-09-25 2019-03-28 Robert Bosch Gmbh Mischeinrichtung für Heizgeräte sowie Heizgeräte mit einer solchen Mischeinrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603411A (en) * 1948-02-28 1952-07-15 Trumpa Ewald Blower inlet control device
JPS60205119A (ja) * 1984-03-29 1985-10-16 Toshiba Ceramics Co Ltd 昇炎式陶芸窯
DE4011691A1 (de) * 1989-04-13 1990-10-18 Vaillant Joh Gmbh & Co Geblaesebrenner, insbesondere sturzbrenner
FR2654191A1 (fr) * 1989-11-09 1991-05-10 Rousseau Louis Bruleur a debit reglable et a air induit ou pulse.
EP0896191A2 (fr) * 1997-08-05 1999-02-10 Karl Dungs GmbH & Co. Dispositif d'admission du gaz combustible pour un brûleur à prémélange

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2603411A (en) * 1948-02-28 1952-07-15 Trumpa Ewald Blower inlet control device
JPS60205119A (ja) * 1984-03-29 1985-10-16 Toshiba Ceramics Co Ltd 昇炎式陶芸窯
DE4011691A1 (de) * 1989-04-13 1990-10-18 Vaillant Joh Gmbh & Co Geblaesebrenner, insbesondere sturzbrenner
FR2654191A1 (fr) * 1989-11-09 1991-05-10 Rousseau Louis Bruleur a debit reglable et a air induit ou pulse.
EP0896191A2 (fr) * 1997-08-05 1999-02-10 Karl Dungs GmbH & Co. Dispositif d'admission du gaz combustible pour un brûleur à prémélange

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 059 (M - 459) 8 March 1986 (1986-03-08) *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003088805A2 (fr) 2002-04-19 2003-10-30 Salviac Limited Dispositif médical
WO2003088869A2 (fr) 2002-04-19 2003-10-30 Salviac Limited Dispositif médical
US10066838B2 (en) 2006-05-30 2018-09-04 David Deng Dual fuel heating system
WO2008058640A1 (fr) * 2006-11-14 2008-05-22 Sit La Precisa S.P.A. Procédé de contrôle de la distribution d'un combustible air-gaz à un dispositif brûleur
WO2009087041A3 (fr) * 2008-01-08 2009-09-17 Ln 2 S.R.L. A Socio Unico Dispositif d'entrée pour flux d'air ou de gaz dans une unité ventilateur, en particulier dans des brûleurs à gaz à prémélange
ITPD20090215A1 (it) * 2009-07-22 2011-01-23 Ln 2 Srl Socio Unico Dispositivo miscelatore aria-gas, particolarmente per apparecchi bruciatori a pre-miscelazione.
EP2278224A3 (fr) * 2009-07-22 2013-02-27 LN 2 S.R.L. a socio unico Mélangeur air/gaz, en particulier pour brûleur à prémélange
US9829195B2 (en) 2009-12-14 2017-11-28 David Deng Dual fuel heating source with nozzle
US20130092104A1 (en) * 2009-12-16 2013-04-18 Intergas Heating Assets Bv Fan housing for a fan for supplying a fuel/oxidizer mixture to a burner, insert and supply device therefor
US20170067644A1 (en) * 2010-06-09 2017-03-09 Continental Appliances, Inc., D.B.A. Procom Heating apparatus with fan
WO2012028667A3 (fr) * 2010-09-02 2012-06-21 Sit La Precisa S.P.A. Dispositif de mélange air-gaz pour brûleurs à gaz combustible à prémélange
CN103201561A (zh) * 2010-09-02 2013-07-10 意大利精密机械技术股份公司 用于预混式燃气燃烧器的空气—燃气混合装置
ITPD20100265A1 (it) * 2010-09-02 2012-03-03 Sit La Precisa Spa Dispositivo miscelatore aria-gas per bruciatori a gas combustibile con premiscelazione
EP2442028A1 (fr) * 2010-10-12 2012-04-18 Riello S.p.A. Dispositif d'alimentation d'un mélange air-gaz
ITMI20101865A1 (it) * 2010-10-12 2012-04-13 Riello Spa Gruppo di alimentazione di una miscela aria/gas
EP3006827A1 (fr) * 2014-10-09 2016-04-13 Robert Bosch Gmbh Mélangeur à plage de modulation élevée et système de prémélange comprenant celui-ci
CN105509058A (zh) * 2014-10-09 2016-04-20 罗伯特·博世有限公司 高调制范围的混合器以及包括它的预混系统
CN105509058B (zh) * 2014-10-09 2019-09-13 罗伯特·博世有限公司 高调制范围的混合器以及包括它的预混系统

Also Published As

Publication number Publication date
RU2003123500A (ru) 2005-01-10
DE60129164T2 (de) 2008-02-28
ATE365892T1 (de) 2007-07-15
KR20030088890A (ko) 2003-11-20
RU2262041C2 (ru) 2005-10-10
ITPD20010023A1 (it) 2002-08-01
EP1356234A1 (fr) 2003-10-29
KR100813366B1 (ko) 2008-03-12
EP1356234B1 (fr) 2007-06-27
DE60129164D1 (de) 2007-08-09

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