EP0021512A1 - Echangeur de chaleur utilisable dans une chaudière de chauffage central ou appareil analogue et appareil de chauffage contenant un tel échangeur de chaleur - Google Patents

Echangeur de chaleur utilisable dans une chaudière de chauffage central ou appareil analogue et appareil de chauffage contenant un tel échangeur de chaleur Download PDF

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Publication number
EP0021512A1
EP0021512A1 EP80200553A EP80200553A EP0021512A1 EP 0021512 A1 EP0021512 A1 EP 0021512A1 EP 80200553 A EP80200553 A EP 80200553A EP 80200553 A EP80200553 A EP 80200553A EP 0021512 A1 EP0021512 A1 EP 0021512A1
Authority
EP
European Patent Office
Prior art keywords
pins
heat exchanger
sections
flue
flue gas
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Withdrawn
Application number
EP80200553A
Other languages
German (de)
English (en)
Inventor
Jan Aede Stapenséa
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.)
Rheem Nederland BV
Original Assignee
Rheem Nederland BV
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 Rheem Nederland BV filed Critical Rheem Nederland BV
Publication of EP0021512A1 publication Critical patent/EP0021512A1/fr
Withdrawn legal-status Critical Current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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/38—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water contained in separate elements, e.g. radiator-type element
    • 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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • 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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0026—Guiding means in combustion gas channels

Definitions

  • the invention relates to a heat exchanger for use in a central heating boiler or heating apparatus, said exchanger comprising a plurality of sections arranged side by side add having each a fluid chamber intercommunicating through an inlet and outlet nipple, a flue passage channel being formed between the sections,in which channel project pins arranged on the sidewalls of the sections.
  • the fluid contained in the sections is heated by heat transfer from the flue gases across the walls of the sections to the fluid.
  • the pins projecting in the flue channels serve to improve this heat transfer. In practice it has, however, been found that despite the many shapes of the pins employed the efficiency of such a heat exchanger is comparatively low.
  • the invention has for its object to provide a heat exchanger which produces such a turbulence of the flue gases that the heat transfer from the flue gas to the wall of the heat exchanger becomes optimal, whilst the flow of the fluid in the sections is improved so that the heat absorbed from the walls of the sections is transferred to the optimum to the fluid.
  • the outer surface of the pins is flattened along the circumference at one or more places, the flat surface of the pin being at an.angle to the direction of length of the flue channel.
  • the pins are arranged in rows inclined to the direction of length of the flue channel, the flat surfaces of the pins being parallel to the row so that inclined flow channels are formed in the flue channel.
  • the rows of pins are disposed so as to converge in the direction of passage of the flue channel.
  • progressively narrowing flow channels are formed, which have a kind of venturi effect on the flue gas.
  • the distance between the pins of the same row can be progressively reduced in the direction of passage of the flue channel.
  • the fluid chamber comprises one or more guide partitions.
  • these partitions are preferably converging towards the section wall bombarded by the flue gas as a result of which the rate of flow of the fluid in the section along this hot wall will be high and hence also the cooling effect.
  • the heating apparatus shown in fig. 1 mainly comprises a gas burner 1 and a heat exchanger 2 arranged above said burner and having an inlet and an outlet 'conduit 3 and 4 respectively.
  • the assembly is surrounded by an envelope 5, with which a chimney 6 communicates.
  • the heat exchanger 2 consists of a series of sections 7 arranged side by side to be described more fully hereinafter with reference to figs. 2 to 6. Between the sections flue gas channels 8 are formed so that the flue gases emanating from the burner 1 can flow through these channels 8 towards the outlet pipe 6.
  • the section shown in fig.2 is mainly formed by a hollow casing in which a fluid chamber is formed, which communicates through an inlet nipple 9 and an outlet nipple 14 with the chambers of the neighbouring sections.
  • the sidewall of the section 7 has a substantially rectangular shape and has a large number of pins 10 projecting into the flue channel 8 formed between two sections.
  • the pins shown in fig.2 are disposed in converging rows, which is indicated by the line I-II in fig.2.
  • the flat surfaces extend parallel to the row of pins so that between the rows of pins flow channels are formed which are in a position inclined to the main direction of flow of the flue gas from bottom to top.
  • guide ribs 15 On the bottom side or the affluent side of the section 7 are arranged guide ribs 15: see also fig.3.
  • the surfaces 11 of the pins 10 are mirror-symmetrical on both sides of a section 7 as shown in fig.4. It will be obvious that in assembling the sections the rows 1 - 2 on one side (fig.2) will cross those on the other side fo the same section so that in assembling two sections 7 the pins 10 facing one another will be in crosswise positions.
  • five partitions are arranged in overlapping positions in a manner such that the fluid from the inlet stub 9 will mainly flow along the wall 12 and will partly find its way between the partitions 13 (see the arrows Pl and P2). Owing to these partitions 13 the rate of flow P1 will be relatively high whilst no dead corners will be formed in the fluid chamber of the section 7, so that optimum heat transfer is ensured.
  • the pins may as an alternative be disposed in staggering rows I,II so that the flow direction of the flue gas in the flow channel changes repeatedly. This may further enhance the desired turbulence.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP80200553A 1979-06-20 1980-06-12 Echangeur de chaleur utilisable dans une chaudière de chauffage central ou appareil analogue et appareil de chauffage contenant un tel échangeur de chaleur Withdrawn EP0021512A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7904829 1979-06-20
NL7904829A NL7904829A (nl) 1979-06-20 1979-06-20 Warmtewisselaar voor een cv-ketel of dergelijke.

Publications (1)

Publication Number Publication Date
EP0021512A1 true EP0021512A1 (fr) 1981-01-07

Family

ID=19833391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200553A Withdrawn EP0021512A1 (fr) 1979-06-20 1980-06-12 Echangeur de chaleur utilisable dans une chaudière de chauffage central ou appareil analogue et appareil de chauffage contenant un tel échangeur de chaleur

Country Status (2)

Country Link
EP (1) EP0021512A1 (fr)
NL (1) NL7904829A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287142A2 (fr) * 1987-03-18 1988-10-19 Radson B.V. Elément pour chaudière
WO1997046835A1 (fr) * 1996-06-03 1997-12-11 Francisco Alvarado Barrientos Ameliorations apportees a un chauffe-eau pour systemes de recuperation de la chaleur
AT404754B (de) * 1997-02-24 1999-02-25 Vaillant Gmbh Wärmetauscher
FR2791128A1 (fr) * 1999-03-19 2000-09-22 Dietrich Thermique Element echangeur de chaleur a picots pour chaudiere sectionnnable

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960310A (en) * 1931-05-06 1934-05-29 Nat Radiator Corp Sectional cast metal boiler
FR2308072A1 (fr) * 1975-04-18 1976-11-12 Burnham Europa Bv Echangeur de chaleur pour le chauffage d'un fluide

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960310A (en) * 1931-05-06 1934-05-29 Nat Radiator Corp Sectional cast metal boiler
FR2308072A1 (fr) * 1975-04-18 1976-11-12 Burnham Europa Bv Echangeur de chaleur pour le chauffage d'un fluide

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0287142A2 (fr) * 1987-03-18 1988-10-19 Radson B.V. Elément pour chaudière
EP0287142A3 (en) * 1987-03-18 1988-12-07 Radson B.V. A boiler element
WO1997046835A1 (fr) * 1996-06-03 1997-12-11 Francisco Alvarado Barrientos Ameliorations apportees a un chauffe-eau pour systemes de recuperation de la chaleur
AT404754B (de) * 1997-02-24 1999-02-25 Vaillant Gmbh Wärmetauscher
FR2791128A1 (fr) * 1999-03-19 2000-09-22 Dietrich Thermique Element echangeur de chaleur a picots pour chaudiere sectionnnable

Also Published As

Publication number Publication date
NL7904829A (nl) 1980-12-23

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB NL

17P Request for examination filed

Effective date: 19810706

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840102

RIN1 Information on inventor provided before grant (corrected)

Inventor name: STAPENSEA, JAN AEDE