EP 0401543 B1 19930811 - NEAT-EXCHANGER APPARATUS, ESPECIALLY FOR A GAS OR OIL FIXED WATER HEATER
Title (en)
NEAT-EXCHANGER APPARATUS, ESPECIALLY FOR A GAS OR OIL FIXED WATER HEATER
Publication
Application
Priority
- DE 8907029 U 19890608
- DE 8911236 U 19890921
Abstract (en)
[origin: EP0401543A1] The invention relates to a heat exchanger apparatus with at least one outer pipe (80) carrying a first heat exchange medium, in which outer pipe there extends at least one inner pipe (82) of lesser diameter for a second heat exchange medium. It is proposed that, in order for the inner pipe (82) to be supported without play, the outer pipe (81) be provided with inward-directed local projections (88) which press the inner pipe (82) against the inside wall of the outer pipe (80) or against other inward-directed projections of the outer pipe. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
F24H 1/52 (2013.01); F24H 1/526 (2013.01); F28D 7/10 (2013.01)
Designated contracting state (EPC)
DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0401543 A1 19901212; EP 0401543 B1 19930811; DE 59002270 D1 19930916; DE 8911236 U1 19901004; ES 2044304 T3 19940101; PT 94301 A 19910208
DOCDB simple family (application)
EP 90108956 A 19900512; DE 59002270 T 19900512; DE 8911236 U 19890921; ES 90108956 T 19900512; PT 9430190 A 19900607