EP0668984B1 - Selbsttragender wassererhitzer, geeignet um aus kunststoff hergestellt zu werden - Google Patents

Selbsttragender wassererhitzer, geeignet um aus kunststoff hergestellt zu werden Download PDF

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Publication number
EP0668984B1
EP0668984B1 EP94926228A EP94926228A EP0668984B1 EP 0668984 B1 EP0668984 B1 EP 0668984B1 EP 94926228 A EP94926228 A EP 94926228A EP 94926228 A EP94926228 A EP 94926228A EP 0668984 B1 EP0668984 B1 EP 0668984B1
Authority
EP
European Patent Office
Prior art keywords
container
water heater
plastic material
self
faces
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
EP94926228A
Other languages
English (en)
French (fr)
Other versions
EP0668984A1 (de
Inventor
Romano Nardi
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.)
Nardi Tecnologie Srl
Original Assignee
Nardi Tecnologie Srl
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 Nardi Tecnologie Srl filed Critical Nardi Tecnologie Srl
Publication of EP0668984A1 publication Critical patent/EP0668984A1/de
Application granted granted Critical
Publication of EP0668984B1 publication Critical patent/EP0668984B1/de
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
    • F24H1/18—Water-storage heaters
    • F24H1/181—Construction of the tank

Definitions

  • the present invention deals with a self-bearing water heater, adapted to be made of plastic material.
  • FR-A-2 479 429 that is deemed as the most relevant prior art, discloses a heat accumulator comprising a first, or internal container made of synthetic material and a second, or external, insulating container whose internal contour corresponds to the external shape of the first, internal container and that is stiffly placed around it.
  • Object of the present invention is to solve the above inconveniences, providing a simple and practical water heater, of a particular shape, made of suitable plastic material, that among other things provides the following advantages:
  • a further major characteristic of the water heater of the invention is that on the shorter bottom face of the first container, there are assembled, in addition to the typical water heater elements like resistance and outlet pipe for hot water, a safety valve and a pressure reducer, the latter one being adapted to reduce pressure inside the container and to avoid possible water hammers, with clear, obvious benefits for water heater operation and life, under maximum safety conditions.
  • a further characteristic of the water heater of the invention is that said hollow "pulling ducts", running perpendicular to the wider container faces, are adapted to make mechanical members pass through them, like tie rods and/or bolts to secure the container itself to the wall or for other purposes, some of which are specified below.
  • the internal container is obtained in a single piece in suitable plastic material, such as polyethylene or polypropylene; the external container being made of ABS and the insulating material being foamed polyurethan.
  • the internal container made of suitable plastic material like polyethylene or polypropylene, is obtained in two pieces, or opposed shells, joined together making their respective edges and the "pulling ducts" of each shell mate; sealing of said two shells being obtained adequately shaping said edges to allow a suitable matching thereof, downstream of which a gasket is provided running for the whole container periphery, and joining together with suitable securing means or bolts said edges, and, with suitable gaskets, the "pulling ducts" of each shell; the external container being made of ABS and the insulating material being foamed polyurethan.
  • suitable plastic material like polyethylene or polypropylene
  • both the first and the second embodiment can be obtained through injection molding, vacuum molding, or by blowing suitable plastic material.
  • the water heater of the invention is substantially composed of: a first, or internal container 1 made of suitable plastic material and a second, or external container 3 also made of suitable plastic material in which the first, or internal container 1 is placed after having inserted suitable insulating material 5 between the two containers 1 and 3.
  • the first container 1 is shaped as a parallelepiped, with rectangular section, where the two greater faces 7 (front and rear ones) are crossed and connected by a plurality of hollow ducts 9 perpendicular to said faces 7, running as tie rods from one face to the other.
  • a plurality of notches 11 is provided in each face 7 next to each duct 9. Said faces 7 are furrowed by a plurality of external grooves 13 perpendicular to the sides and intersecting said notches 11, running as a ring on the whole periphery of the body 1 section and composing, with the above pulling ducts 9, the container 1 rib.
  • the second container 3 is shaped as a parallelepiped, with rectangular section, adequately thick, adapted to house the first container 1 inside it; the clearance provided between said first and said second container being, as already said, adequately filled with insulating material 5, like foamed plastic material.
  • a safety valve 23 and a pressure reducer 25 On the shorter bottom face 15 of the first container 1, there are assembled, in addition to the typical water heater elements like resistance 19 and outlet pipe 21 for hot water, a safety valve 23 and a pressure reducer 25, the latter one being adapted to reduce pressure inside the container and to avoid possible water hammers, with clear, obvious advantages for water heater operation and life.
  • a temperature gauge 27 is provided on a (front) face 29 of the second container 3.
  • hollow pulling ducts 9, running perpendicular to the wider faces 7 of the container 1, are adapted to make mechanical members pass through them, like tie rods and/or bolts to secure the container itself to the wall or for other purposes, some of which will be specified below.
  • the internal container is obtained in a single piece in suitable plastic material, such as polyethylene or polypropylene; the external container being preferably made of ABS and the insulating material being preferably foamed polyurethan.
  • the internal container made of suitable plastic material is obtained in two pieces 31, or opposed shells, joined together making their respective edges 33 and the "pulling ducts" 35 of each shell mate; sealing of said two shells 31 being obtained adequately shaping said edges 33 to allow a suitable matching thereof, downstream of which a gasket 37 is provided running for the whole container periphery, and joining with suitable securing means or bolts 39 said edges 33, and, with suitable gaskets, the "pulling ducts" 35 of each shell.
  • suitable plastic material like polyethylene or polypropylene
  • Both the first and the second embodiment can be obtained through injection molding with shell die, vacuum molding, or further by blowing suitable plastic material.
  • the plastic material preferably used for the second container 3 is ABS and the insulating material 5 provided in the hollow space between first container 1 and second container 3 is preferably foamed polyurethan.
  • the internal and external containers can be realized through other production techniques that are typical of the wide range of available plastic materials.
  • the internal container 1 is designed in a suitable plastic material with such thickness as to guarantee an easy and safe operation under the various recurring operating conditions; however, for greater safety, a further safety element is provided applied to said internal container 1; this element is composed of a fencing with tapes 41, strap-type, running along the external grooves of the container itself and creating a network element around it. Said tapes 41 are adequately joined together, for example through bolts 43 or the like.

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)
  • Packages (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Laminated Bodies (AREA)
  • Cookers (AREA)
  • Air Humidification (AREA)
  • Resistance Heating (AREA)
  • Details Of Fluid Heaters (AREA)

Claims (8)

  1. Selbsttragender Wassererhitzer, gebildet aus:
    - einem ersten, inneren Behälter (1), der aus Kunststoffmaterial hergestellt ist;
    - einem zweiten, äußeren Behälter (3), der auch aus Kunststoffmaterial hergestellt ist, in dem der erste, innere Behälter (1) untergebracht ist;
    dadurch gekennzeichnet, daß:
    - der erste Behälter (1) als Parallelepiped geformt ist, mit einem rechtwinkeligen Querschnitt, dessen zwei größere Flächen (7), die vordere und die hintere, durch eine Vielzahl hohler, zu den Flächen (7) senkrechter Durchführungen (9), die als Verbindungsstangen von einer Fläche zur anderen laufen, gekreuzt und verbunden sind, wobei in jeder Fläche (7) nahe jeder Durchführung (9) eine Vielzahl von Kerben (11) vorgesehen ist, wobei die Flächen (7) durch eine Vielzahl äußerer, zu den Seiten senkrechter und die Kerben (11) schneidender Rillen (13) gefurcht sind, die als Ring um den gesamten Umfang des Querschnitts des ersten Behälters (1) laufen und mit den Ziehdurchführungen (9) die Versteifung des ersten Behälters (1) bilden, wobei an den kleineren (15) und größeren Flächen (7) des Behälters (1) eine Vielzahl von Auskragungen (17) vorgesehen ist, die als Stütze zwischen dem ersten, inneren Behälter (1) und dem zweiten, äußeren Behälter (3) wirken,
    - der zweite Behälter (3) als Parallelepiped geformt ist, mit einem rechtwinkeligen Querschnitt, der geeignet ist, den ersten Behälter (1) aufzunehmen, wobei ein Zwischenraum zwischen dem ersten Behälter (1) und dem zweiten Behälter (3) vorgesehen ist, der mit Isoliermaterial (5), wie geschäumtem Kunststoffmaterial, gefüllt ist.
  2. Selbsttragender Wassererhitzer nach Anspruch 1, dadurch gekennzeichnet, daß auf der kürzeren Bodenfläche (15) des ersten Behälters (1), zusätzlich zu anderen Wassererhitzerelementen, wie einem Widerstand (19) und einem Abflußrohr (21) für Heißwasser, ein Sicherheitsventil (23) und ein Druckminderer (25) montiert sind, wobei letzterer dazu geeignet ist, den Druck innerhalb des ersten Behälters (1) zu reduzieren und mögliche Wasserschläge zu vermeiden.
  3. Selbsttragender Wassererhitzer nach Anspruch 1, dadurch gekennzeichnet, daß die hohlen Ziehdurchführungen (9), die senkrecht zu den breiteren Flächen (7) des ersten Behälters (1) laufen, dazu geeignet sind, daß mechanische Glieder, wie Verbindungsstangen und/oder Bolzen, durch sie durchgehen, um den ersten Behälter selbst an der Wand zu befestigen.
  4. Selbsttragender Wassererhitzer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der innere Behälter (1) in einem einzigen Stück aus Kunststoffmaterial, wie z.B. Polyethylen oder Polypropylen, erzeugt wird; wobei der äußere Behälter (3) aus ABS hergestellt wird und das Isoliermaterial (5) geschäumtes Polyurethan ist.
  5. Selbsttragender Wassererhitzer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der innere Behälter (1), der aus Kunststoffmaterial, wie Polyethylen oder Polypropylen, hergestellt ist, in zwei Stücken, oder entgegengesetzten Schalen (31), erzeugt wird, die dadurch miteinander verbunden sind, daß man ihre jeweiligen Ränder (33) und "Ziehdurchführungen" (35) jeder Schale (31) zusammenpassen läßt, wobei das Dichten der zwei Schalen (31) dadurch erreicht wird, daß die Ränder (33), denen nachgeschaltet eine um den gesamten Behälterumfang laufende Dichtung (37) vorgesehen ist, so geformt werden, daß sie zusammengepaßt werden können, und daß mittels Befestigungsmitteln oder Bolzen (39) die Ränder (33) und, unter Verwendung von Dichtungen, die "Ziehdurchführungen" (35) jeder Schale (31) verbunden werden, wobei der äußere Behälter (3) aus ABS hergestellt wird und das Isoliermaterial (5) geschäumtes Polyurethan ist.
  6. Selbsttragender Wassererhitzer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der innere Behälter (1) durch Spritzgießen, Vakuumformen oder durch Blasen von Kunststoffmaterial erhalten wird.
  7. Selbsttragender Wassererhitzer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der äußere Behälter (3), der aus Kunststoffmaterial, wie ABS, hergestellt wird, durch für das Material gewöhnliche Formtechniken erhalten wird.
  8. Selbsttragender Wassererhitzer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß ein am inneren Behälter (1) angebrachtes Sicherheitselement vorgesehen ist, welches aus einer Umzäunung mit Bändern (41), in der Art von Riemen, gebildet ist, die um die äußeren Rillen des inneren Behälters (1) selbst laufen und ein Netzelement um ihn bilden.
EP94926228A 1993-09-17 1994-09-01 Selbsttragender wassererhitzer, geeignet um aus kunststoff hergestellt zu werden Expired - Lifetime EP0668984B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITTO930684 1993-09-17
ITTO930684A IT1261870B (it) 1993-09-17 1993-09-17 Scaldaacqua autoportante, atto ad essere costituito in materiale plastico.
PCT/EP1994/002900 WO1995008085A1 (en) 1993-09-17 1994-09-01 Self-bearing water heater, adapted to be made of plastic material

Publications (2)

Publication Number Publication Date
EP0668984A1 EP0668984A1 (de) 1995-08-30
EP0668984B1 true EP0668984B1 (de) 1997-12-29

Family

ID=11411740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94926228A Expired - Lifetime EP0668984B1 (de) 1993-09-17 1994-09-01 Selbsttragender wassererhitzer, geeignet um aus kunststoff hergestellt zu werden

Country Status (7)

Country Link
EP (1) EP0668984B1 (de)
AT (1) ATE161619T1 (de)
AU (1) AU7614994A (de)
BR (1) BR9405595A (de)
DE (1) DE69407562D1 (de)
IT (1) IT1261870B (de)
WO (1) WO1995008085A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005049257A1 (de) * 2005-10-14 2007-04-26 Webasto Product Italy Spa, Colturano Warmwasserspeicher

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE207602T1 (de) * 1996-05-03 2001-11-15 Kaldewei Franz Gmbh & Co Warmwasserspeicher mit einem innenbehälter
EP1147346A1 (de) 1999-01-21 2001-10-24 Goitre, Tiziana Selbsttragender wassererhitzer aus kunststoffmaterial
SE518211C2 (sv) * 1999-12-15 2002-09-10 Swep Int Ab Varmvattenberedare omfattande en plattvärmeväxlare och en lagringsbehållare

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH425147A (de) * 1965-10-28 1966-11-30 Therma Ag Dünnwandiger Druckbehälter und Verfahren zur Herstellung desselben
DE3011426A1 (de) * 1980-03-25 1981-10-01 Schneider, Helmhold, 5230 Altenkirchen Kunststoff-waermespeicher, insbesondere fuer die warmwasserspeicherung im haustechnischen bereich u.dgl., sowie verfahren zu seiner hertellung
DE8431098U1 (de) * 1983-11-22 1985-04-11 Gentili, Vittorio, Bologna Tragbarer, kanisterfoermiger behaelter mit palettierbarer umhuellung
DE3710264A1 (de) * 1987-03-28 1988-10-13 Gerhard Rambacher Behaelter aus kunststoff
DE9108101U1 (de) * 1991-07-02 1991-08-29 Gebr. Jacobs GmbH & Co KG, 5600 Wuppertal Heißwasserbehälter
DE4216633C2 (de) * 1992-05-20 1996-03-21 Mn Heizungsmontage Gmbh Warmwasserspeicher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005049257A1 (de) * 2005-10-14 2007-04-26 Webasto Product Italy Spa, Colturano Warmwasserspeicher

Also Published As

Publication number Publication date
BR9405595A (pt) 1999-09-08
ATE161619T1 (de) 1998-01-15
ITTO930684A1 (it) 1995-03-17
DE69407562D1 (de) 1998-02-05
IT1261870B (it) 1996-06-03
EP0668984A1 (de) 1995-08-30
AU7614994A (en) 1995-04-03
WO1995008085A1 (en) 1995-03-23
ITTO930684A0 (it) 1993-09-17

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