An air-gas mixing device particularly for gas burners with forced ventilation

(19)

(11)

EP 0 846 916 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	10.02.1999 Bulletin 1999/06

(43)	Date of publication A2:
	10.06.1998 Bulletin 1998/24

(21)	Application number: 97201892.3

(22)	Date of filing: 20.06.1997

(51)	International Patent Classification (IPC)⁶: F23D 14/64

(84)	Designated Contracting States:
	AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV RO SI

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Priority:

06.12.1996 IT PD960300

(71)	Applicant: SIT LA PRECISA S.r.l.
	I-35129 Padova (IT)

(72)	Inventors:
	Previato, Armando 35100 Padova (IT) Sacchi, Daniele 30172 Mestre (VE) (IT) Turrin, Gianpiero 35100 Padova (IT)

(74)	Representative: Cantaluppi, Stefano et al
	c/o JACOBACCI & PERANI S.p.A. Via Berchet, 9 35131 Padova 35131 Padova (IT)

(54)	An air-gas mixing device particularly for gas burners with forced ventilation

(57) An air-gas mixing device comprises a Venturi duct (3) inside which a portion (12) with a restricted cross-section is defined and outside which a gas-distribution chamber (16) is defined; gas-induction passageways (21a-d; 101a-d) open in the wall of the portion with a restricted cross-section, between the gas-distribution chamber (16) and the interior of the Venturi duct (3), and are formed in the Venturi duct with orientations having an axial component.

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