EP0502001B1 - Reservoir d'eau chaude cloisonne - Google Patents

Reservoir d'eau chaude cloisonne Download PDF

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Publication number
EP0502001B1
EP0502001B1 EP19900916778 EP90916778A EP0502001B1 EP 0502001 B1 EP0502001 B1 EP 0502001B1 EP 19900916778 EP19900916778 EP 19900916778 EP 90916778 A EP90916778 A EP 90916778A EP 0502001 B1 EP0502001 B1 EP 0502001B1
Authority
EP
European Patent Office
Prior art keywords
vessel
chamber
water
lower region
chambers
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
EP19900916778
Other languages
German (de)
English (en)
Other versions
EP0502001A1 (fr
Inventor
Thomas Robison Carruthers
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.)
Ventank Products Ltd
Original Assignee
Ventank Products Ltd
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 Ventank Products Ltd filed Critical Ventank Products Ltd
Priority to AT90916778T priority Critical patent/ATE93603T1/de
Publication of EP0502001A1 publication Critical patent/EP0502001A1/fr
Application granted granted Critical
Publication of EP0502001B1 publication Critical patent/EP0502001B1/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
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F24D3/082—Hot water storage tanks specially adapted therefor
    • 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
    • F24H1/18—Water-storage heaters
    • F24H1/188—Water-storage heaters with means for compensating water expansion

Definitions

  • This invention relates to an enclosed fluid-containment vessel for use with a sealed central heating system and an unvented hot water system supplied with water from a regulated pressure source.
  • a known form of such a fluid-containment vessel is disclosed in EP-A-260989 and comprises an arrangement of chambers forming an indirect hot water cylinder and expansion tank and a further chamber forming a heating system expansion tank, the further chamber being formed by the provision of two spaced disc-like partition walls welded to the interior of the vessel in an upper region thereof.
  • the further chamber is subjected to repeated thermal cycling resulting in repeated expansion and contraction of the partition walls which introduces the danger of weld break-down thereby leading to mixing of the water from the two systems which is highly undesireable because the water in the central heating system is comparatively impure and would lead to contamination of the comparatively pure water in the hot water system.
  • an enclosed fluid-containment vessel for use with a sealed central heating (CH) system and an unvented hot water (HW) system supplied with water from a regulated pressure source, said vessel comprising a first chamber forming an indirect HW cylinder and integral expansion tank and having a header region for storing air surmounting a lower region for storing water, said lower region incorporating heater means for heating stored water and for thereby releasing dissolved air from said water whereby to fill the header region with air, first upper port means adjacent the top of said lower region for delivering stored fluid to the exterior of the vessel and second lower port means remote from the top of said lower region for receiving water to be stored from the exterior of the vessel; a second chamber forming a CH system expansion tank and having a header region for storing air surmounting a lower region for storing water, said second chamber comprising an auto air vent means arranged to enable venting of the second chamber to the exterior of the vessel when the stored water level in the second chamber is less than a set level, said lower
  • the single partition is ring corrugated. Consequently, the problem of weld break-down is substantially mitigated.
  • Vessel 1 comprises a lowermost chamber A, which functions as a hot water storage tank and which is in fluid communication with an uppermost chamber C via a passageway 5 in the form of a pipe extending through partition walls 2-3 which are disc-like formations welded to the walls of the vessel 1 and which, together with the vessel wall, forms a third chamber B which functions as a central heating system expansion tank.
  • a vent tube 6 extends from the top of chamber B to the top of chamber C.
  • a further tube 7 extends from the bottom of chamber C, and therefore through chamber B, to the bottom of chamber A for the purpose of providing a water re-circulation path between chambers A and C.
  • Cold water to be stored in vessel 1, particularly in chamber A thereof is delivered from the street mains via pipe 16 with stop cock 11 to a pressure regulating valve 13 and enters the lower end of chamber A via a one-way valve 14.
  • port 15 is provided between regulator 13 and valve 14, to enable pressure-regulated cold water to be delivered to a variety of other appliances (such as taps) not shown.
  • Chamber A contains a heater 17 whereby water in chamber A can be heated, and this hot water gravitates through pipe 5 to chamber C where it is drawn off via port 8 in the side wall of vessel 1.
  • the action of heating the water in chamber A causes release of dissolved air and this gathers in the domed portion 4 of vessel 1 so that the upper end of tube 6 opens into this air volume.
  • the sealed central heating system (not shown) is provided with an expansion pipe which is connected to port 10 of chamber B and it will be appreciated that heater 17 is conveniently formed as a water heated coil connected to the central heating system.
  • Chamber B is provided with an auto air vent 18 which is set to vent to atmosphere the interior of chamber B when the water level therein falls below a set level.
  • a similar vent 19, is optionally provided in chamber C.
  • Chamber C is also provided with a pressure relief and anti-vacuum valve 9.
  • a similar valve 12 is provided at the top end of chamber A.
  • chamber A In normal operation of vessel 1, chamber A is completely water filled as is pipe 5, whereas chambers B and C are only partly water filled, the header regions of chambers B and C being air filled and inter-communicating via tube 6.
  • the magnitude of this air volume varies as the water content of vessel 1 varies in temperature due to thermal expansion when the water is heated.
  • the repeated thermal cycling which occurs within the vessel results in partitions 2 and 3 experiencing repeated expansion and contraction forces which tend to crack or loosen the annular weld which joins each of partitions 2 and 3 to the wall of vessel 1.
  • the vessel 1 is normally made of copper or other metal (such as stainless steel).
  • Fig. 2 illustrates a first vessel 20 in accordance with the present invention and which comprises all of the components of the vessel 1 of Fig. 1 except as herein-after explained.
  • vessel 20 comprises a single first chamber 21 formed by the walls of the vessel 20 and having the same functional effect as the chambers A and C together of Fig. 1.
  • a second chamber 22 is located within vessel 20 and is separated from chamber 21 by a single disc-like partition wall 3.
  • Partition wall 3 may be ring corrugated.
  • Tube 6 is secured to partition wall 3 and extends upwardly therefrom to open into the header region of chamber 22 within dome 4.
  • Chamber 22 has the same functional effect as chamber B in Fig. 1.
  • Fig 3 illustrates a second vessel 30 in accordance with the present invention and which comprises all of the components of the vessel 1 of Fig. 1 except as hereinafter explained.
  • vessel 30 comprises a single first chamber 21 formed by the walls of the vessel 30 and having the same functional effect as the chambers A and C together of Fig. 1.
  • a second chamber 22 having the same functional effect as chamber B of Fig. 1, is located within vessel 30 and is separated from chamber 21 by a single disc-like partition wall 3, from which tube 6 extends upwardly into the header region of chamber 21 within dome 4.
  • chamber 22 is at the top end of the vessel 20, whereas in Fig. 3, chamber 21 is at the top end of the vessel 30.
  • Chamber 21 is of substantially larger capacity than chamber 22 in order to accommodate the conventionally large volume of stored hot water for the hot water system.
  • the chambers, 21, 22 are separated only by a single partition wall 3, which is peripherally welded to the walls of the pertaining vessel 20, 30 and which carries the tube 6, the length of which depends upon the location of the partition wall 3 within the vessel.
  • the vessels 20, 30 form two chambers 21, 22 each of which, in use, is only partly water filled and tube 6 opens into the respective air-filled header regions of the chambers 21, 22.
  • the location of port 8 and auto air vent 19 determines the extent of the air filled header in chamber 21.
  • the mechanical construction of the vessel 20, 30 is relatively simple because of the provision of only a single disc-like partition 3 which is connected to the walls of the vessel only around the outer perimeter so that it is comparatively free to expand and contract within the vessel so that the problem of weld break-down is substantially reduced.

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  • 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)
  • Water Supply & Treatment (AREA)
  • Details Of Fluid Heaters (AREA)
  • Cookers (AREA)

Abstract

Un réservoir fermé (20) contenant un liquide à utiliser dans un système de chauffage central étanche (CH) et un système d'eau chaude (HW) sans évent alimenté en eau à partir d'une source de pression régulée (16, 13) est divisé à l'intérieur en deux chambres (21, 22) par une cloison (3) simple en forme de disque portant un tube (6) débouchant dans la zone de tête respective des chambres (21, 22). La cloison simple (3) est relativement à même de se dilater et de se contracter à l'intérieur du réservoir (20) quand elle est soumise à un cyclage thermique.

Claims (2)

  1. Un réservoir fermé contenant un fluide destiné à être utilisé avec un système de chauffage central scellé (CH) et un système d'eau chaude non éventé (HW) alimenté en eau à partir d'une source de pression réglée, comprenant une première chambre (21) formant un cylindre HW indirect et un vase d'expansion incorporé et comportant une région de tête pour stocker de l'air, surmontant une région inférieure pour stocker de l'eau, ladite région inférieure incorporant un moyen de chauffage (17) pour chauffer l'eau stockée et pour dégager ainsi de l'air dissous de ladite eau et pour remplir d'air la région de tête, un premier moyen d'embouchure supérieur (8) adjacent au sommet de ladite région inférieure, pour déverser le fluide stocké vers l'extérieur du réservoir (20) ainsi qu'un deuxième moyen d'embouchure inférieur (15), éloigné du sommet de ladite région inférieure, pour recevoir de l'eau devant être stockée à partir de l'extérieur du dit réservoir (20); une deuxième chambre (22) formant un vase d'expansion d'un système CH et possédant une région de tête pour stocker de l'air, surmontant une région inférieure pour stocker de l'eau, ladite deuxième chambre (22) comprenant un moyen d'aération automatique (18) agencé de sorte à permettre l'élimination d'air de la deuxième chambre (22) vers l'extérieur du réservoir lorsque le niveau d'eau stockée dans la deuxième chambre (22) est inférieur à un niveau fixé, ladite région inférieure comprenant un moyen d'embouchure (10) pour transmettre du fluide du système CH vers l'extérieur du réservoir (20) et pour l'en ramener; l'agencement des dites première et deuxième chambres (21, 22) étant tel que chaque région de tête a une capacité volumétrique déterminée, supérieure à celle requise pour permettre la dilatation thermique de l'eau à partir de la région inférieure de la chambre correspondante; et un passage de transmission de fluide (6) s'étendant entre lesdites première et deuxième chambres (21, 22), ledit passage (6) débouchant dans les régions de tête respectives à un niveau supérieur à celui atteint par la dilatation thermique de l'eau à partir de la région inférieure de la chambre correspondante, dans lequel lesdites première et deuxième chambres (21, 22) sont formées par les parois du dit réservoir (20) sur les côtés opposés d'une seule cloison en forme de disque (3) soudée aux parois du réservoir, ledit passage de transmission de fluide (6) comprenant un tube qui y est monté et qui s'étend à partir de ladite cloison (3).
  2. Un réservoir selon la revendication 1, dans laquelle la partie supérieure du réservoir (20) forme la deuxième chambre (22), la partie inférieure du réservoir (20) formant la première chambre (21).
EP19900916778 1989-11-25 1990-11-21 Reservoir d'eau chaude cloisonne Expired - Lifetime EP0502001B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90916778T ATE93603T1 (de) 1989-11-25 1990-11-21 Geteilter heisswasserspeicher.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898926701A GB8926701D0 (en) 1989-11-25 1989-11-25 Fluid containment vessel
GB8926701 1989-11-25

Publications (2)

Publication Number Publication Date
EP0502001A1 EP0502001A1 (fr) 1992-09-09
EP0502001B1 true EP0502001B1 (fr) 1993-08-25

Family

ID=10666935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900916778 Expired - Lifetime EP0502001B1 (fr) 1989-11-25 1990-11-21 Reservoir d'eau chaude cloisonne

Country Status (5)

Country Link
EP (1) EP0502001B1 (fr)
AU (1) AU6721990A (fr)
DE (1) DE69002953D1 (fr)
GB (1) GB8926701D0 (fr)
WO (1) WO1991008423A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0428338D0 (en) 2004-12-24 2005-02-02 Carruthers Thomas R Fluid-containment vessel
EP2338499A1 (fr) 2006-10-10 2011-06-29 Gunther Hartmann Oligonucleotide 5'triphosphate induisant une réaction antivirale
SK9566Y1 (sk) * 2021-12-15 2022-08-10 Protherm Production s.r.o Systém na absorbovanie expanzie vody a vykurovacie zariadenie vybavené týmto systémom

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB936541A (en) * 1961-08-10 1963-09-11 Cyril Heathcote Hoare Improvements in hot water circulating apparatus for domestic space heating and hot water supply
GB1021612A (en) * 1964-01-03 1966-03-02 Till Mellor Wakefield Ltd An improvement in or relating to water storage vessels of the heat exchange type
GB8622520D0 (en) * 1986-09-18 1986-10-22 Hydro Spartan Ltd Domestic hot water cylinder & system

Also Published As

Publication number Publication date
WO1991008423A1 (fr) 1991-06-13
EP0502001A1 (fr) 1992-09-09
GB8926701D0 (en) 1990-01-17
AU6721990A (en) 1991-06-26
DE69002953D1 (de) 1993-09-30

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