EP 0570201 A1 19931118 - Heat exchanger for a gas boiler.
Title (en)
Heat exchanger for a gas boiler.
Title (de)
Wärmetauscher für Gaskessel.
Title (fr)
Echangeur de chaleur pour chaudière à gaz.
Publication
Application
Priority
KR 920008010 A 19920512
Abstract (en)
A heat exchanger for a gas boiler, having a simple structure and increased heat-exchanging efficiency, has a heating tube 13 wound into a spiral and having a plurality of heat-exchanging fins 13a formed thereon by rolling. At least one hot water tube 14 may be installed inside the heating tube, to perform both space heating and water heating in a compact structure. The outer peripheral surface of the hot water tube may be carved in a spiral form so that space heating water has a turbulent flow. <IMAGE>
IPC 1-7
IPC 8 full level
F28D 7/02 (2006.01); F24H 1/43 (2006.01); F24H 1/52 (2006.01); F28D 7/14 (2006.01); F28D 19/00 (2006.01); F28F 9/00 (2006.01); F28F 13/12 (2006.01)
CPC (source: EP KR)
F24H 1/34 (2013.01 - KR); F24H 1/43 (2013.01 - EP); F24H 1/52 (2013.01 - EP); F24H 1/526 (2013.01 - EP)
Citation (search report)
- [X] EP 0385700 A1 19900905 - NUNNERLEY MICHAEL JOHN [GB]
- [X] DE 2253493 A1 19730510 - STEAM ENGINES SYSTEMS CORP
- [Y] PATENT ABSTRACTS OF JAPAN vol. 12, no. 315 (M-735)26 August 1988 & JP-A-63 087 597 ( SAKUSHIYON GAS KIKAN SEISAKUSHO:KK ) 18 April 1988
- [Y] PATENT ABSTRACTS OF JAPAN vol. 9, no. 307 (M-435)4 December 1985 & JP-A-60 144 595 ( MITSUBISHI JUKOGYO KK ) 30 July 1985
Designated contracting state (EPC)
DE FR NL
DOCDB simple family (publication)
EP 0570201 A1 19931118; CN 1079811 A 19931222; JP H0642812 A 19940218; KR 930023664 A 19931221; KR 950002487 B1 19950320; RU 2069294 C1 19961120
DOCDB simple family (application)
EP 93303652 A 19930512; CN 93105533 A 19930512; JP 13254093 A 19930511; KR 920008010 A 19920512; RU 93005179 A 19930511