EP0932009A2 - Wärmeübertrager für brennstoffbeheizte Wassererhitzer, insbesondere für Brennwertgeräte - Google Patents
Wärmeübertrager für brennstoffbeheizte Wassererhitzer, insbesondere für Brennwertgeräte Download PDFInfo
- Publication number
- EP0932009A2 EP0932009A2 EP98120353A EP98120353A EP0932009A2 EP 0932009 A2 EP0932009 A2 EP 0932009A2 EP 98120353 A EP98120353 A EP 98120353A EP 98120353 A EP98120353 A EP 98120353A EP 0932009 A2 EP0932009 A2 EP 0932009A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- inner tube
- fuel
- heated water
- water heater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
Definitions
- the invention relates to a heat exchanger according to the Genus of the main claim.
- Such heat exchangers serve for preheating the combustion air in room air independent Heaters and for heat recovery from the exhaust gas.
- the Exhaust gas is released into the open in counterflow to the combustion air or led into a moisture-insensitive air exhaust system.
- the recuperative heat recovery allows one Condensing boiler operation of a circulating water heater even if the return temperature of the water above the Water vapor dew point temperature of the exhaust gas. This Operation is especially at low outside temperatures given where the preheating of the combustion air Efficiency of the device influenced particularly favorably.
- the two tubes are smooth cylindrical.
- a circular tube cross section has the worst Ratio of cross-sectional area to heat transfer Wall surface so that the heat contained in the exhaust gas is not can be used optimally.
- the subclaims contain features for the design of the Arrangement according to the main claim.
- Figures 1 to 3 each show one Cross section through one of the exemplary embodiments.
- the heat exchanger according to Figure 1 has an exhaust gas inner tube 10 concentric from an outer, Combustion air leading tube 12 is surrounded.
- the inner Tube 10 is inside with longitudinal ribs 14 and outside with Provided longitudinal ribs 16 so that both on the exhaust side also large heat transfer surfaces on the combustion air side surrender.
- the wall sections 22 are outside and delimited on the inside by curved partial surfaces 24 and 26, respectively into the corresponding sub-areas of the neighboring ones Pass over wall sections 22.
- This version continues despite Enlargement of the heat transfer areas of the exhaust gas and the Combustion air only has a low flow resistance opposite.
- the heat exchanger according to FIG. 3 has an exhaust pipe 30 a line-symmetrical profile of individual, parallel channels 32, 34, 36 arranged to each other, that of straight Wall sections limited and by a transverse channel 38 are interconnected.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
Description
Claims (4)
- Wärmeübertrager für brennstoffbeheizte Wassererhitzer, insbesondere für Brennwertgeräte, mit einem inneren Rohr und einem das innere Rohr umgebenden äußeren Rohr, dadurch gekennzeichnet, daß mindestens eine Wandfläche (Mantelfläche, Innenwandfläche) des inneren Rohres (10, 20, 30) ein von der Kreisform abweichendes Profil aufweist.
- Wärmeübertrager nach Anspruch 1, dadurch gekennzeichnet, daß das innere Rohr (10) außen und/oder innen mit Längsrippen (14, 16) versehen ist (Figur 1).
- Wärmeübertrager nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das innere Rohr (20) mehrere über den Umfang verteilte, nach innen und/oder außen vortretende Wandabschnitte (22) hat (Figur 2).
- Wärmeübertrager nach Anspruch 1, dadurch gekennzeichnet, daß das innere Rohr (30) ein liniensymmetrisches Profil aufweist (Figur 3).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29800981U DE29800981U1 (de) | 1998-01-22 | 1998-01-22 | Wärmeübertrager für brennstoffbeheizte Wassererhitzer, insbesondere für Brennwertgeräte |
DE29800981U | 1998-01-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0932009A2 true EP0932009A2 (de) | 1999-07-28 |
EP0932009A3 EP0932009A3 (de) | 2000-07-05 |
Family
ID=8051552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98120353A Withdrawn EP0932009A3 (de) | 1998-01-22 | 1998-10-28 | Wärmeübertrager für brennstoffbeheizte Wassererhitzer, insbesondere für Brennwertgeräte |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0932009A3 (de) |
DE (1) | DE29800981U1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103206883A (zh) * | 2013-04-22 | 2013-07-17 | 浙江工业大学 | 翅片式螺旋管 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE839806C (de) * | 1949-08-02 | 1952-05-26 | Otto H Dr-Ing E H Hartmann | Sternfoermiges Faltenrohr als Einsatzrohr fuer Waermeaustauscher |
EP0401543A1 (de) * | 1989-06-08 | 1990-12-12 | Robert Bosch Gmbh | Wärmeübertrager, insbesondere für einen gas- oder ölbeheizten Wassererhitzer |
US5409057A (en) * | 1993-01-22 | 1995-04-25 | Packless Metal Hose, Inc. | Heat exchange element |
EP0775876A1 (de) * | 1995-11-21 | 1997-05-28 | E.L.M. Leblanc | Meanderförmiger,kombinierter Wärmetauscher mit komplexer,gerader Strecke |
WO1997044628A1 (en) * | 1996-05-17 | 1997-11-27 | Minoru Nitta | Heat exchanger |
-
1998
- 1998-01-22 DE DE29800981U patent/DE29800981U1/de not_active Expired - Lifetime
- 1998-10-28 EP EP98120353A patent/EP0932009A3/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE839806C (de) * | 1949-08-02 | 1952-05-26 | Otto H Dr-Ing E H Hartmann | Sternfoermiges Faltenrohr als Einsatzrohr fuer Waermeaustauscher |
EP0401543A1 (de) * | 1989-06-08 | 1990-12-12 | Robert Bosch Gmbh | Wärmeübertrager, insbesondere für einen gas- oder ölbeheizten Wassererhitzer |
US5409057A (en) * | 1993-01-22 | 1995-04-25 | Packless Metal Hose, Inc. | Heat exchange element |
EP0775876A1 (de) * | 1995-11-21 | 1997-05-28 | E.L.M. Leblanc | Meanderförmiger,kombinierter Wärmetauscher mit komplexer,gerader Strecke |
WO1997044628A1 (en) * | 1996-05-17 | 1997-11-27 | Minoru Nitta | Heat exchanger |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103206883A (zh) * | 2013-04-22 | 2013-07-17 | 浙江工业大学 | 翅片式螺旋管 |
CN103206883B (zh) * | 2013-04-22 | 2015-10-28 | 浙江工业大学 | 翅片式螺旋管 |
Also Published As
Publication number | Publication date |
---|---|
EP0932009A3 (de) | 2000-07-05 |
DE29800981U1 (de) | 1999-05-20 |
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