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EP0026271A2 - Echangeur de chaleur, en particulier pour chauffe-eau à mazout ou à gaz - Google Patents

Echangeur de chaleur, en particulier pour chauffe-eau à mazout ou à gaz Download PDF

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Publication number
EP0026271A2
EP0026271A2 EP80103781A EP80103781A EP0026271A2 EP 0026271 A2 EP0026271 A2 EP 0026271A2 EP 80103781 A EP80103781 A EP 80103781A EP 80103781 A EP80103781 A EP 80103781A EP 0026271 A2 EP0026271 A2 EP 0026271A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tubes
rails
tube
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
EP80103781A
Other languages
German (de)
English (en)
Other versions
EP0026271B1 (fr
EP0026271A3 (en
Inventor
Ernst Dipl.-Ing. Schmidt
Josef Schmid
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to AT80103781T priority Critical patent/ATE4558T1/de
Publication of EP0026271A2 publication Critical patent/EP0026271A2/fr
Publication of EP0026271A3 publication Critical patent/EP0026271A3/de
Application granted granted Critical
Publication of EP0026271B1 publication Critical patent/EP0026271B1/fr
Expired 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies

Definitions

  • the invention relates to a heat exchanger according to the preamble of the main claim.
  • a heat exchanger is already known, in which the outer tubes have an oval cross section and receive two superposed inner tubes which are provided with knobs on the outer circumference for the purpose of maintaining a distance from the outer tube and for holding without play (DE-OS 27 42 820 ).
  • This arrangement requires a subsequent treatment of the inner tubes by local encryption I modeling and tends because of the unfavorable cross-sectional shape of the longitudinal channel formed between the tubes for the first heat transfer medium for the addition of this channel by the entrained in the heat transfer medium impurities. This tendency is particularly present when a high proportion of lime precipitates from the heat transfer medium, which acts as a binder for the rust particles detached from the line pipes.
  • the arrangement according to the invention with the characterizing features of the main claim has the advantage that the longitudinal channel for the first heat transfer medium has a more compact cross-sectional profile due to the one-sided abutment of the inner tube or tubes on the inner wall of the outer tube and is therefore less prone to clogging than a longitudinal channel, which is formed between an outer tube and on all sides at a distance from the inner wall of the inner tubes.
  • Another advantage is that the inner tubes do not require protrusions, so that an additional operation to form them is not necessary.
  • heat exchangers which are designed as a lamella block and are located at the upper end of a combustion shaft which is arranged above a burner working with an open flame, it is particularly advantageous to provide the rails in the lower region of the outer tubes facing the combustion shaft. This ensures that there is a larger flow space for the first heat transfer medium in the main area of heat transfer.
  • the rails can be integrally formed on the outer tube or can be designed as individual parts which can subsequently be inserted. In this case, in order to achieve good heat transfer, it is advantageous if the rails are also provided with a convex contact surface which is adapted to the inner wall of the outer tube.
  • the rails are appropriately shaped so that they are not inserted twisted and cannot escape when inserted.
  • the outer tubes of which are soldered into the bottom plates of deflection or collecting chambers on both end faces, it is expedient to push the rail between the tubes only after the tubes have been soldered to the bottom plates.
  • FIG. 1 shows a side view of the heat exchanger and FIG. 2 shows a section along the line 11-11 in FIG. 1.
  • FIG. 3 the previous embodiment is illustrated on an enlarged scale by means of a cross section through the nested pipes of the heat exchanger, while FIG. 4 corresponds to this shows the arrangement according to the invention.
  • FIG. 5 shows a cross section through one of the rails between the outer and inner tubes of the heat exchanger.
  • the heat exchanger has a fin block 10 through which six heating water pipes 11 are passed.
  • 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 connection support 24 (FIG.
  • the heating water supplied via the chamber 21 and directed into the lower three heating water pipes 11 is diverted into the top three heating water pipes 11, from where the water enters the heating flow line via the chamber 20.
  • 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 thereby 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 35, 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 35 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 of the two strands 34 and 35 of the process water pipe coil, which are located in the chamber 20, are also cranked apart and connected to one another via a 180 ° elbow 45, which is also flushed with the heating water.
  • the two hot water pipes 31, each in a heating water pipe 11, are held and guided without play in the heating water pipe 11 by certain means.
  • these means are formed by knobs 58 (FIG. 3), which are connected to the process water pipes 11 are formed without cutting.
  • a rail 60 (FIGS. 4 and 5) is provided for this purpose in each heating water pipe 11, which rail is formed as an individual part and is joined between the pipes 11 and 31 before the parts are finally soldered together.
  • the rail 60 presses the overhead on the inner wall of the heating water tube 11 without play via the service water pipe 31 located below.
  • the process water pipes 31 are held without play in the central plane of the heating water pipe 11 and, moreover, it is avoided that the rail can be used in a rotated manner.
  • the rail 60 has a concave bearing surface 62 for the adjacent process water pipe 31 and a convex bearing surface 64 with which it is supported on the inner wall of the heating water pipe 11.
  • the width B of the rail 60 is larger than its height H, which corresponds to the length difference between the inside width of the heating water pipe 11 measured in the longitudinal direction and twice the outside diameter of the service water pipes 31.
  • the arched bearing surfaces 62 and 64 of the rail hold the parts against lateral displacement or tilting and at the same time ensure good heat transfer from the heating water pipe 11 to the service water pipes 31.
  • the rail 60 is designed as a drawn, thin-walled hollow part. However, it could also consist of solid material and, for example, be a double-T profile with a single web.
  • the arrangement of a single rail 60 in each heating water pipe 11 and the one-sided contact of the one hot water pipe 31 on the inner wall of the heating water pipe 11 form a cavity 66 (FIG. 4). through which the heating water can pass with less pressure loss than through the two gap-shaped cavities 68 (FIG. 3) of the known embodiment.
  • the assembly of the heat exchanger is so simple that first the fins and the base plates 13 are soldered to the heating water pipes 11 and then the hot water pipes 31 connected in pairs via the elbows 33 are pushed into the heating water pipes 11 from the side of the deflection chamber 23. Thereafter, the elbows 32 and 45 are soldered to the free ends of the sections 31 and then the rails 60 are inserted into the heating water pipes 11 and inserted therein by suitable means, e.g. secured by pinching their ends protruding from the heating water pipes 11 against axial displacement. Next, the cover plates 16 and 22 are placed on the base plates 13 and welded to the edge thereof.
  • connection ends 37 and 38 of the process water pipe coil are soldered to the cover plate 16 and the nipples 42 and 43 in one operation.
  • the cover plate 22 ensures that the connection ends 37 and 38 cannot dodge against the lamella block 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)
  • Resistance Heating (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP80103781A 1979-09-26 1980-07-03 Echangeur de chaleur, en particulier pour chauffe-eau à mazout ou à gaz Expired EP0026271B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80103781T ATE4558T1 (de) 1979-09-26 1980-07-03 Waermeuebertrager, insbesondere fuer gas- oder oelbeheizte wassererhitzer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19797927253U DE7927253U1 (de) 1979-09-26 1979-09-26 Waermeuebertrager, insbesondere fuer gas- oder oelbeheizte wassererhitzer
DE7927253U 1979-09-26

Publications (3)

Publication Number Publication Date
EP0026271A2 true EP0026271A2 (fr) 1981-04-08
EP0026271A3 EP0026271A3 (en) 1981-05-27
EP0026271B1 EP0026271B1 (fr) 1983-08-31

Family

ID=6707715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103781A Expired EP0026271B1 (fr) 1979-09-26 1980-07-03 Echangeur de chaleur, en particulier pour chauffe-eau à mazout ou à gaz

Country Status (6)

Country Link
EP (1) EP0026271B1 (fr)
JP (1) JPS5656583A (fr)
AT (1) ATE4558T1 (fr)
DE (2) DE7927253U1 (fr)
ES (1) ES495337A0 (fr)
YU (1) YU41943B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627263A1 (fr) * 1988-02-16 1989-08-18 Leblanc Sa E L M Installation de chauffage central avec circuit d'eau chaude a usage domestique
WO2020156615A1 (fr) * 2019-01-29 2020-08-06 Faiveley Transport Leipzig Gmbh & Co. Kg Échangeur de chaleur pour fluide de refroidissement combustible
CN112747609A (zh) * 2021-02-02 2021-05-04 赤壁银轮工业换热器有限公司 一种换热器结构
CN118208970A (zh) * 2024-04-03 2024-06-18 常山永成制冷设备有限公司 一种回流冷凝器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010071583A (ja) * 2008-09-19 2010-04-02 Mitsubishi Electric Corp 熱交換器及びこれを備えた給湯器
CN113714592B (zh) * 2021-09-30 2024-11-22 中国电子科技集团公司第五十四研究所 一种水-空气薄壁热交换器钎焊用工装及其使用方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1217691A (fr) * 1958-10-29 1960-05-05 Grenobloise Etude Appl Supports de tubes pour échangeurs de chaleur ou appareils similaires
JPS4827437B1 (fr) * 1970-12-30 1973-08-22
JPS5319164B2 (fr) * 1972-05-30 1978-06-19
DE2742820C2 (de) * 1977-09-23 1985-09-12 Robert Bosch Gmbh, 7000 Stuttgart Wärmeübertrager für einen gas- oder ölbeheizten Durchlauf-Wassererhitzer

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2627263A1 (fr) * 1988-02-16 1989-08-18 Leblanc Sa E L M Installation de chauffage central avec circuit d'eau chaude a usage domestique
BE1006641A5 (fr) * 1988-02-16 1994-11-08 Leblanc Sa E L M Installation de chauffage central avec circuit d'eau chaude a usage domestique.
WO2020156615A1 (fr) * 2019-01-29 2020-08-06 Faiveley Transport Leipzig Gmbh & Co. Kg Échangeur de chaleur pour fluide de refroidissement combustible
CN113366276A (zh) * 2019-01-29 2021-09-07 法维莱运输莱比锡有限两合公司 易燃制冷剂的热交换器
CN113366276B (zh) * 2019-01-29 2023-12-19 法维莱运输莱比锡有限两合公司 易燃制冷剂的热交换器
CN112747609A (zh) * 2021-02-02 2021-05-04 赤壁银轮工业换热器有限公司 一种换热器结构
CN118208970A (zh) * 2024-04-03 2024-06-18 常山永成制冷设备有限公司 一种回流冷凝器

Also Published As

Publication number Publication date
DE3064696D1 (en) 1983-10-06
DE7927253U1 (de) 1981-03-26
ATE4558T1 (de) 1983-09-15
YU230580A (en) 1983-09-30
JPS5656583A (en) 1981-05-18
ES8200178A1 (es) 1981-10-16
EP0026271B1 (fr) 1983-08-31
EP0026271A3 (en) 1981-05-27
ES495337A0 (es) 1981-10-16
YU41943B (en) 1988-02-29

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