EP 2282140 A4 20140101 - HEAT EXCHANGER AND HOT-WATER SUPPLY DEVICE USING SAME
Title (en)
HEAT EXCHANGER AND HOT-WATER SUPPLY DEVICE USING SAME
Title (de)
WÄRMETAUSCHER UND DIESEN VERWENDENDE HEISSWASSERVERSORGUNGSVORRICHTUNG
Title (fr)
ÉCHANGEUR DE CHALEUR ET DISPOSITIF DE PRODUCTION D EAU CHAUDE L UTILISANT
Publication
Application
Priority
- JP 2009056811 W 20090401
- JP 2008100377 A 20080408
- JP 2008191924 A 20080725
Abstract (en)
[origin: EP2282140A1] Disclosed are a heat exchanger which can effectively prevent circulation blockage due to scale deposits without forming all of the outer tubes (52) or only the downstream side thereof by large-diameter tubes; and a hot water supply system using the same. The number of first inner tubes (51) on the downstream side of hot water supply water is smaller than the number of second inner tubes (52) on the upstream side thereof. Thereby, the circulation cross-sectional area can be secured such that the circulation cross-sectional area between a first outer tube (53) and each of the first inner tubes (51) is larger than the circulation cross-sectional area between a second outer tube (54) and each of the second inner tubes (51). Thus, circulation blockage inside the outer tube (53) on the downstream side due to scale deposits can be effectively prevented without forming all of the outer tubes (53 and 54) or only the outer tube (53) on the downstream side by large-diameter tubes. In this case, the number of second inner tubes (52) on the upstream side of the hot water supply water is larger than the number of first inner tubes (51) on the downstream side thereof, and thus the hot water supply water can be sufficiently heated by each of the second inner tubes (52).
IPC 8 full level
F24H 1/00 (2006.01); F24H 9/00 (2006.01); F28D 7/10 (2006.01)
CPC (source: EP)
F24D 17/02 (2013.01); F24H 1/54 (2022.01); F28D 7/14 (2013.01); F28D 7/163 (2013.01); F24D 2200/12 (2013.01); F24D 2220/06 (2013.01); F24D 2220/08 (2013.01); F24D 2220/20 (2013.01)
Citation (search report)
- [X] EP 0418534 A2 19910327 - BORSIG BABCOCK AG [DE]
- [Y] JP 2005345066 A 20051215 - T RAD CO LTD
- [Y] JP 2005291684 A 20051020 - MATSUSHITA ELECTRIC IND CO LTD
- [Y] JP 2005147564 A 20050609 - TOYO RADIATOR CO LTD
- [Y] JP 2007326141 A 20071220 - MITSUBISHI ELECTRIC CORP
- See references of WO 2009125700A1
Designated contracting state (EPC)
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 TR
DOCDB simple family (publication)
EP 2282140 A1 20110209; EP 2282140 A4 20140101; EP 2282140 B1 20140903; AU 2009234819 A1 20091015; AU 2009234819 B2 20140522; JP 2009270809 A 20091119; JP 5180716 B2 20130410; WO 2009125700 A1 20091015
DOCDB simple family (application)
EP 09729622 A 20090401; AU 2009234819 A 20090401; JP 2008191924 A 20080725; JP 2009056811 W 20090401