EP0401543A1 - Appareil échangeur de chaleur, en particulier pour un chauffe-eau à gaz ou à fuel - Google Patents

Appareil échangeur de chaleur, en particulier pour un chauffe-eau à gaz ou à fuel Download PDF

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Publication number
EP0401543A1
EP0401543A1 EP19900108956 EP90108956A EP0401543A1 EP 0401543 A1 EP0401543 A1 EP 0401543A1 EP 19900108956 EP19900108956 EP 19900108956 EP 90108956 A EP90108956 A EP 90108956A EP 0401543 A1 EP0401543 A1 EP 0401543A1
Authority
EP
European Patent Office
Prior art keywords
outer tube
tube
projections
heat exchanger
exchanger according
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.)
Granted
Application number
EP19900108956
Other languages
German (de)
English (en)
Other versions
EP0401543B1 (fr
Inventor
Manfed Dipl.-Ing. Seebauer (Fh)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25954864&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0401543(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0401543A1 publication Critical patent/EP0401543A1/fr
Application granted granted Critical
Publication of EP0401543B1 publication Critical patent/EP0401543B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F24H1/526—Pipes in pipe heat exchangers for sanitary water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • 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

Definitions

  • the invention relates to a heat exchanger according to the preamble of the main claim.
  • Such heat exchangers are characterized by a particularly compact structure and are mainly used in devices which are used for heating heating water and heating domestic water.
  • the inner tubes are supported on the inner wall of the outer tube by local projections provided on their outer circumference. This ensures constant cross-sections and defined heat transfer conditions, and prevents water hammer.
  • the external projections on the inner tubes require a relatively high production outlay.
  • heat exchangers of the generic type are known (DE-GM 79 27 253) in which the inner tubes are pressed against the inner wall of the outer tube by a rail additionally inserted into the outer tube.
  • This production-oriented design reduces the flow cross section remaining in the outer tubes and, moreover, arises at the ends of the rails in the deflection chambers for the outer tubes Water flowing through pipes joints where limescale, dirt and corrosion products from the water can deposit and settle. In unfavorable cases, this can lead to a deterioration in the heat transfer, to an increased pressure loss in the heat exchanger and to boiling noises.
  • the invention has for its object to avoid the disadvantages mentioned above in a heat exchanger of the generic type and to provide a heat exchanger in which the inner tubes are reliably supported on the inner wall of the outer tubes and the means for supporting the free cross section in the outer Reduce pipes as little as possible.
  • the outer tubes are provided with inwardly directed local projections which press the inner tubes against the inner wall or against other inwardly directed projections of the outer tubes.
  • the heat-transferring surface of the inner tube or tubes can be increased and the efficiency can be further improved if the inner tube or tubes are supported on all sides by inward projections of the outer tube and are held without play.
  • FIG. 1 shows a side view of a heat exchanger according to the first exemplary embodiment
  • FIG. 2 shows a section along the line II-II in FIG. 1
  • FIG. 3 shows a side view of an outer tube of the heat exchanger according to FIGS. 1 and 2
  • FIG. 4 3 and FIG. 5 shows a section along the line VV in FIG. 3.
  • FIGS. 6 and 7 a section through the tubes of the heat exchangers according to the second and third are enlarged Embodiment shown.
  • the heat exchanger according to FIGS. 1 to 5 has a lamellar block 10 through which six heating water pipes 11 are approximately oval in cross section are passed through.
  • the individual lamellae of the lamella block 10 are provided with collars 12 at the through-holes with which they are soldered to the heating water pipes 11.
  • the ends of the heating water pipes 11 are soldered on both ends of the lamella block 10 in a base plate 13, which is designed as a drawn sheet metal part with a raised flange 14.
  • the bottom plates 13 of both slat block sides have the same shape, which simplifies production and storage.
  • a cover plate 16 is placed on the left base plate 13 in FIG. 2, which is also designed as a drawn sheet metal part with a flange edge 17 and is tightly welded to the base plate 13 thereon.
  • the cover plate 16 has a bead-shaped recess 18 which bears against a small elevation 19 of the base plate 13 under tension, but without a fixed connection, and forms a labyrinth seal between the chambers 20 and 21 with this elevation 19.
  • the upper three heating water pipes 11 in FIG. 1 open into the chamber 20, while the chamber 21 encloses the mouths of the lower three heating water pipes 11.
  • the bottom plate 13 on the right in the drawing forms a chamber 23 with a cover plate 22, into which all six heating water pipes 11 open.
  • the chamber 20 is provided with a connecting piece 24 (FIG.
  • Extending within the heating water pipes 11 are smaller domestic water pipes 31, which are connected outside the heating water pipes 11 by elbows 32 and 33, which are arranged inside the chambers 20, 21 and 23 and are therefore washed by the heating water.
  • the elbows 33 are integrally formed on the service water pipes 31, while the elbows 32 are soldered to these pipes.
  • the process water pipes 31 and the elbows 32 and 33 form a two-layer process water pipe coil with a flow line 34, which appears in FIG. 1 as the left vertical pipe row, and a return line 36, which is at the top in FIG. 2 and covers the flow line 34 there.
  • the connection ends 37 and 38 of the two strands 34 and 36 are bent and made so long that they penetrate the cover plate 16 at a distance and allow perfect soldering.
  • the cover plate 16 has on its head side 41 a recessed section 42 for space-saving accommodation of nipples 43 and 44 which are soldered to the connection ends 37 and 38.
  • the opposite ends, located in the chamber 20, of the two strands 34 and 36 of the process water pipe coil are also cranked apart and connected to one another via a 180 ° elbow 45, which is also flushed with the heating water.
  • the heating water pipes 11, which are oval in cross-section, are each provided on their two side walls 46, 48 with a row of knobs 50 arranged at an axial distance from one another, which are formed by locally pressing in the side walls 46, 48 and on each side wall 46, 48 on a common surface line 52 lie.
  • the knobs 50 hold the two hot water pipes 31 in the heating water pipe 11, the lower hot water pipe 31 being supported on the knobs 50 and the upper hot water pipe 31 resting on the inside of the top wall 54 of the heating water pipe 11.
  • the knobs 50 can be produced easily and cheaply and can be provided at any height, so that the heating water pipes 11 and the service water pipes 31 can also be freely dimensioned.
  • the flow cross section in the heating water pipes 11 is only slightly reduced and also only a small number of knobs 50 over the entire length of the heating water pipes 11 is required to support the process water pipes 31 and to keep them in the correct position.
  • the solder connection between the fins and the heating water pipes 11 is interrupted only in the few and narrow areas of the knobs 50, so that the heat transfer between the fins and the heating water pipes 11 is only negligibly impaired. Due to the small number of knobs 50, the process water pipes can swing freely in the area between the knobs 50, thereby avoiding the risk of fatigue fractures of the process water pipes due to quick-opening or closing valves, such as single-lever mixers.
  • two hot water pipes 62 are arranged one above the other in an oval heating water pipe 60, of which the lower hot water pipe 62 is supported on pressed-in knobs 64 of the hot water pipe 60 and the upper hot water pipe 62 resting on the lower hot water pipe 62 is supported on pressed-in knobs 66 of the hot water pipe 60 .
  • the lower knobs 64 are formed at the transition of the two side walls 68, 70 of the heating water pipe 60 in the bottom wall 72 thereof, whereas the upper knobs 66 are arranged at the transition of the side walls 68, 70 into the head wall 74 of the heating water pipe 60.
  • the hot water pipes 62 are practically flowed around on all sides by the heating water in the heating water pipe 60, which results in a somewhat higher efficiency compared to the embodiment according to FIGS. 1 to 5 with the same number of fins.
  • a single process water pipe 82 is arranged in an oval heating water pipe 80, which is held without play in the desired position in the heating water pipe 80 by nub-like projections 88 provided on the side walls 84, 86 of the heating water pipe 80.
  • the service water pipe 82 can also be arranged off-center, preferably in the direction of the exhaust gas flow, offset in the heating water pipe 80.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP90108956A 1989-06-08 1990-05-12 Appareil échangeur de chaleur, en particulier pour un chauffe-eau à gaz ou à fuel Revoked EP0401543B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8907029U 1989-06-08
DE8907029 1989-06-08
DE8911236U 1989-09-21
DE8911236U DE8911236U1 (de) 1989-06-08 1989-09-21 Wärmeübertrager, insbesondere für einen gas- oder ölbeheizten Wassererhitzer

Publications (2)

Publication Number Publication Date
EP0401543A1 true EP0401543A1 (fr) 1990-12-12
EP0401543B1 EP0401543B1 (fr) 1993-08-11

Family

ID=25954864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90108956A Revoked EP0401543B1 (fr) 1989-06-08 1990-05-12 Appareil échangeur de chaleur, en particulier pour un chauffe-eau à gaz ou à fuel

Country Status (4)

Country Link
EP (1) EP0401543B1 (fr)
DE (2) DE8911236U1 (fr)
ES (1) ES2044304T3 (fr)
PT (1) PT94301A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2741426A1 (fr) * 1995-11-21 1997-05-23 Leblanc Sa E L M Corps de chauffe mixte a serpentin a section droite complexe
EP0784191A2 (fr) 1996-01-15 1997-07-16 Robert Bosch Gmbh Installation pour chauffer de l'eau de chauffage à circulation et de l'eau sanitaire
EP0932009A3 (fr) * 1998-01-22 2000-07-05 Robert Bosch Gmbh Echangeur de chaleur pour chauffe-eau chauffé par un combustible, en particulier pour chaudière à condensation
GB2409261A (en) * 2003-12-16 2005-06-22 Giannoni S P A Bi-thermal heat exchanger with integral inlet- and outlet fitting
EP1703213A1 (fr) * 2005-02-07 2006-09-20 Robert Bosch Gmbh Chauffe-eau sanitaire
CN101846470A (zh) * 2010-05-19 2010-09-29 刘世贵 组合式套管板式换热器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4141136C2 (de) * 1991-12-13 1996-04-25 Wieland Werke Ag Wärmeaustauschsystem zur Erwärmung von Heiz- und Brauchwasser

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE671097A (fr) * 1964-11-09 1966-02-14
US3453840A (en) * 1966-07-02 1969-07-08 Sanyo Electric Co Tube-within-a-tube type heat exchangers
DE3418803A1 (de) * 1983-05-24 1984-11-29 Gedeon Ing. Schwechat Wein Verfahren und waermetauscher zur waermerueckgewinnung bei einer kuehlanlage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE671097A (fr) * 1964-11-09 1966-02-14
US3453840A (en) * 1966-07-02 1969-07-08 Sanyo Electric Co Tube-within-a-tube type heat exchangers
DE3418803A1 (de) * 1983-05-24 1984-11-29 Gedeon Ing. Schwechat Wein Verfahren und waermetauscher zur waermerueckgewinnung bei einer kuehlanlage

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2741426A1 (fr) * 1995-11-21 1997-05-23 Leblanc Sa E L M Corps de chauffe mixte a serpentin a section droite complexe
EP0775876A1 (fr) 1995-11-21 1997-05-28 E.L.M. Leblanc Corps de chauffe mixte à serpentin à section droite complexe
EP0784191A2 (fr) 1996-01-15 1997-07-16 Robert Bosch Gmbh Installation pour chauffer de l'eau de chauffage à circulation et de l'eau sanitaire
DE19601179A1 (de) * 1996-01-15 1997-07-24 Bosch Gmbh Robert Einrichtung zum Erhitzen von umlaufendem Heizungswasser und Brauchwasser
EP0784191A3 (fr) * 1996-01-15 1998-03-18 Robert Bosch Gmbh Installation pour chauffer de l'eau de chauffage à circulation et de l'eau sanitaire
EP0932009A3 (fr) * 1998-01-22 2000-07-05 Robert Bosch Gmbh Echangeur de chaleur pour chauffe-eau chauffé par un combustible, en particulier pour chaudière à condensation
GB2409261A (en) * 2003-12-16 2005-06-22 Giannoni S P A Bi-thermal heat exchanger with integral inlet- and outlet fitting
EP1703213A1 (fr) * 2005-02-07 2006-09-20 Robert Bosch Gmbh Chauffe-eau sanitaire
CN101846470A (zh) * 2010-05-19 2010-09-29 刘世贵 组合式套管板式换热器
CN101846470B (zh) * 2010-05-19 2012-04-11 刘世贵 组合式套管板式换热器

Also Published As

Publication number Publication date
DE59002270D1 (de) 1993-09-16
PT94301A (pt) 1991-02-08
EP0401543B1 (fr) 1993-08-11
DE8911236U1 (de) 1990-10-04
ES2044304T3 (es) 1994-01-01

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