Boiler and process for heating and for producing sanitary hot water

(19)

(11)

EP 0 940 636 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	12.09.2001 Bulletin 2001/37

(43)	Date of publication A2:
	08.09.1999 Bulletin 1999/36

(21)	Application number: 99830117.0

(22)	Date of filing: 05.03.1999

(51)	International Patent Classification (IPC)⁷: F24D 3/08

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

(30)

Priority:

06.03.1998 IT PR980016

(71)	Applicant: Immergas S.p.A.
	42041 Brescello (Reggio Emilia) (IT)

(72)	Inventor:
	Amadei, Romano 43058 Sorbolo (Parma) (IT)

(74)	Representative: Gotra, Stefano
	Bugnion S.p.A. Via Garibaldi 22 43100 Parma 43100 Parma (IT)

(54)	Boiler and process for heating and for producing sanitary hot water

(57) A boiler (1) of the combined type for heating and for producing sanitary hot water, comprising a primary circuit (7, 8, 9) for a heating fluid, having a delivery branch (7) and a return branch (8) intended for connection to a heating system, and a secondary branch (9) which connects the delivery branch to the return branch. A circulation pump (14) operates along the return branch upstream of a primary heat exchanger (13). A secondary heat exchanger (18) which is inserted in the secondary branch (9) exchanges heat between the heating fluid in the primary circuit and the sanitary water in a secondary circuit (15). A storage vessel (22) for the heating fluid in the primary circuit, which is inserted in said secondary branch (9), is located downstream of the secondary heat exchanger (18).

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