Title (en)

Air-gas mixer device, particularly for premix burner

Title (de)

Gas-Luftmischer, insbesondere für Vormischbrenner

Title (fr)

Mélangeur air/gaz, en particulier pour brûleur à prémélange

Publication

EP 2278224 A3 20130227 (EN)

Application

EP 10169982 A 20100719

Priority

IT PD20090215 A 20090722

Abstract (en)

[origin: EP2278224A2] An air-gas mixer device, particularly for the premix burner equipment of condensing boilers, comprising flow guide means for guiding an air-gas mixture into the intake section (3a) of a centrifugal fan (2) unit with a predetermined axis of rotation (X), said intake section being coaxial with said axis of rotation, said guide means including a Venturi effect conduit structure (5) with contiguous converging and diverging portions delimiting a constricted section to which the gas flow is fed for mixing with the air flow fed through the converging conduit portion, wherein said guide conduit structure (5) is axially symmetrically developed with a main axis of symmetry coinciding with said axis of rotation (X) and is defined by the rotation about said axis of a flat section with respective contiguous converging and diverging portions (5a, 5b), which is positioned radially and is spaced apart from the axis and on whose plane said axis of rotation (X) lies.

IPC 8 full level

F23D 14/36 (2006.01); F04D 29/42 (2006.01); F23D 14/64 (2006.01); F23L 5/02 (2006.01)

CPC (source: EP)

F04D 29/4213 (2013.01); F23D 14/36 (2013.01); F23D 14/64 (2013.01); F23L 5/02 (2013.01)

Citation (search report)

• [XAY] DE 102007022008 A1 20081113 - SAIA BURGESS DRESDEN GMBH [DE]
• [Y] EP 1482245 A1 20041201 - HOVALWERK AG [LI]
• [XA] JP H08128609 A 19960521 - MIURA KOGYO KK
• [XA] EP 0656507 A2 19950607 - VIESSMANN WERKE KG [DE]
• [XA] EP 0896191 A2 19990210 - DUNGS KARL GMBH & CO [DE]
• [A] EP 0834695 A1 19980408 - INVERNIZZI GIANMARIO [IT]
• [A] DE 10349344 B3 20050630 - EBM PAPST LANDSHUT GMBH [DE]
• [A] US 2603411 A 19520715 - EWALD TRUMPA
• [A] US 2905375 A 19590922 - JOHN HANUS, et al
• [A] WO 02061336 A1 20020808 - SIT LA PRECISA SPA [IT], et al
• [A] WO 03092875 A2 20031113 - SIT LA PRECISA SPA [IT], et al
• [X] WO 03102407 A1 20031211 - CATALYTICA ENERGY SYS INC [US], et al
• [X] WO 2004057236 A2 20040708 - BOWMAN POWER SYSTEMS LIMITED [GB], et al

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

Designated extension state (EPC)

BA ME RS

DOCDB simple family (publication)

EP 2278224 A2 20110126; EP 2278224 A3 20130227; EP 2278224 B1 20141217; IT 1395189 B1 20120905; IT PD20090215 A1 20110123

DOCDB simple family (application)

EP 10169982 A 20100719; IT PD20090215 A 20090722