EP0458427B1 - Chauffe-eau combiné - Google Patents

Chauffe-eau combiné Download PDF

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Publication number
EP0458427B1
EP0458427B1 EP91250099A EP91250099A EP0458427B1 EP 0458427 B1 EP0458427 B1 EP 0458427B1 EP 91250099 A EP91250099 A EP 91250099A EP 91250099 A EP91250099 A EP 91250099A EP 0458427 B1 EP0458427 B1 EP 0458427B1
Authority
EP
European Patent Office
Prior art keywords
water
heating
pipe
conducting
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.)
Expired - Lifetime
Application number
EP91250099A
Other languages
German (de)
English (en)
Other versions
EP0458427A1 (fr
Inventor
Hans-Josef Spahn
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.)
Nv Vaillant Sa
VAILLANT B.V.
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Vaillant NV
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant 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 Vaillant Austria GmbH, Vaillant NV, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant BV filed Critical Vaillant Austria GmbH
Publication of EP0458427A1 publication Critical patent/EP0458427A1/fr
Application granted granted Critical
Publication of EP0458427B1 publication Critical patent/EP0458427B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the invention relates to a combination water heater according to the preamble of the claim.
  • Such a combination water heater has become known from FR-OS 14 52 259.
  • the two pipes are connected to each other by a common heat exchange wall.
  • the disadvantage is that there is only a relatively small common heat exchanger area, so that due to the poor heat distribution, the temperature of the process water can rise to an unacceptably high level at the start of the tap, possibly to> 90 ° C, and can lead to an increased tendency to calcification.
  • the heat exchange wall is not double-walled, as prescribed by various water supply companies.
  • a heating water / process water heat exchanger known from DE-OS 31 22 944
  • helical flat tubes are provided for guiding the process and heating water, which lie against one another or are soldered to one another with their outer lateral lateral surfaces.
  • the advantage of these water heaters is the double-walled separation of the water flowing through the two pipes; however, the common heat exchanger area is again very small.
  • a lamella block with direct heating of the process water and the heating water in which a coiled pipe for guiding the process water is arranged inside a pipe, which is smooth per se, for guiding the heating water.
  • a lamella block in which a coiled pipe for guiding the process water is arranged inside a pipe, which is smooth per se, for guiding the heating water.
  • a lamella block there are advantages over the previously treated heat exchanger with regard to the heating rate in the case of a cold star tap.
  • there are large common heat exchanger surfaces in this fin block so that there is only a slight tendency to boiling noise.
  • the disadvantage here is that the two waters are only separated from one another by a pipe wall.
  • the aim of the invention is to avoid the disadvantage of a low heat exchanger intensity, without therefore having to give up the advantage of a double-walled separation of the waters from one another.
  • a finned tube 2 is held in the finned block 1, through which the heating water can flow.
  • the pipe 4 carrying the process water is inserted and soldered or welded to the walls thereof.
  • the tube 4 fills the recess 3 essentially completely, resulting in large common heat exchange surfaces.
  • the two tubes 2 and 4 are flowed through in opposite directions.
  • the outlet temperature peaks of the domestic hot water depend on the average heating water temperature when tapping immediately after heating operation, but due to the counter-current operation there is an outlet temperature for the domestic water that is significantly below the inlet temperature of the heating water.
  • the short heat conduction paths in the foot area of the lamellar block 1, which is affected by the hot exhaust gas of the burner (not shown) and the already mentioned large common heat exchange surfaces of the pipes 2 and 4 enable good heat dissipation from the respective resting medium to the respective flowing medium, the two systems being operated alternately, so that either the process water or the heating water is always in the respective pipe or flows.
  • a small buffer store can be arranged in the outgoing service water line, which is subdivided by means of a spring-loaded membrane and in the second room of which a branch line from the cold water line of the service water opens, with a spring loading the membrane in the direction of a reduction in the space of the store filled with cold water. Due to the negative pressure when the tap is opened, there is a pressure difference above and below the diaphragm of the storage tank, whereby stored hot tap water flows off and is quickly available at the tap. On the other hand, when the hot water tap is closed, which results in the same pressure conditions on both sides of the membrane of the reservoir and thus the space filled with hot hot water is enlarged due to the prestressing of the hot water, hot hot water is temporarily stored in this room. In the case of taps in quick succession, the outlet temperature peaks are reduced again by this temporary storage of the hot domestic water.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Details Of Fluid Heaters (AREA)
  • Domestic Plumbing Installations (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Cookers (AREA)
  • Resistance Heating (AREA)

Claims (1)

  1. Chauffe-eau combiné pour le chauffage direct d'eau sanitaire et d'eau alimentant un circuit de chauffage, avec un bloc lamellaire qui comprend un tube pour l'eau sanitaire et un tube pour l'eau de chauffage, accolés l'un à l'autre, chauffe-eau caractérisé par le fait que le tube (2) pour l'eau de chauffage porte sur sa périphérie un creux en hélice (3) où est posé le tube d'eau sanitaire (4) qui remplit sensiblement le creux (3).
EP91250099A 1990-04-20 1991-04-12 Chauffe-eau combiné Expired - Lifetime EP0458427B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0092090A AT397302B (de) 1990-04-20 1990-04-20 Lamellenblock für einen kombi-wasserheizer
AT920/90 1990-04-20

Publications (2)

Publication Number Publication Date
EP0458427A1 EP0458427A1 (fr) 1991-11-27
EP0458427B1 true EP0458427B1 (fr) 1995-10-25

Family

ID=3502875

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91250099A Expired - Lifetime EP0458427B1 (fr) 1990-04-20 1991-04-12 Chauffe-eau combiné

Country Status (3)

Country Link
EP (1) EP0458427B1 (fr)
AT (2) AT397302B (fr)
DE (2) DE59106753D1 (fr)

Families Citing this family (3)

* 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
AT403517B (de) * 1994-07-25 1998-03-25 Vaillant Gmbh Lamellenwärmetauscher für einen brennerbeheizten wasserheizer
WO2025091106A1 (fr) * 2023-10-30 2025-05-08 Iron Core Welding Ltd. Chauffe-eau amélioré et procédés d'utilisation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1452259A (fr) * 1965-07-30 1966-02-25 Noxa Chaudière de chauffage central à combustible fluide, comportant un circuit d'eau chaude sanitaire
DE2742839A1 (de) * 1977-09-23 1979-04-05 Bosch Gmbh Robert Waermeuebertrager fuer einen gas- oder oelbeheizten durchlauf-wassererhitzer
US4411307A (en) * 1981-01-29 1983-10-25 Atlantic Richfield Company Wound tube heat exchanger
DE3122944A1 (de) * 1981-06-10 1983-01-13 Parca Norrahammar AB, 56200 Norrahammar Rohrwaermetauscher

Also Published As

Publication number Publication date
AT397302B (de) 1994-03-25
DE59106753D1 (de) 1995-11-30
ATE129558T1 (de) 1995-11-15
EP0458427A1 (fr) 1991-11-27
ATA92090A (de) 1993-07-15
DE4112450A1 (de) 1991-10-24

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