EP2175205A1 - Vase d'expansion avec membrane - Google Patents

Vase d'expansion avec membrane Download PDF

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Publication number
EP2175205A1
EP2175205A1 EP08017699A EP08017699A EP2175205A1 EP 2175205 A1 EP2175205 A1 EP 2175205A1 EP 08017699 A EP08017699 A EP 08017699A EP 08017699 A EP08017699 A EP 08017699A EP 2175205 A1 EP2175205 A1 EP 2175205A1
Authority
EP
European Patent Office
Prior art keywords
membrane
expansion vessel
gas
diaphragm
vessel 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.)
Withdrawn
Application number
EP08017699A
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German (de)
English (en)
Inventor
Heinrich Winkelmann
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.)
Winkelmann Sp Z Oo
Original Assignee
Winkelmann Sp Z Oo
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 Winkelmann Sp Z Oo filed Critical Winkelmann Sp Z Oo
Priority to EP08017699A priority Critical patent/EP2175205A1/fr
Publication of EP2175205A1 publication Critical patent/EP2175205A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • 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
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F24D3/1016—Tanks having a bladder

Definitions

  • the invention relates to a membrane expansion vessel for connection to a conduit network with two vessel parts which are pressure and fluid tightly connected to each other in a circumferential connection area, wherein the closed vessel interior formed by the two vessel parts is separated from a membrane into a water space and a gas space, wherein the Water space is connected via a connecting piece with the mains network.
  • Such expansion vessels with membranes are used to accommodate changes in volume, for example, by pressure-dependent switching on and off of pumps, by pressure shock absorbers or temperature-related in closed fluid circuits that occur in water supply systems or heating circuits.
  • two different types of expansion vessel are distinguished, namely vessels with two vessel parts and a flat or half-shell-shaped membrane, and vessels with a bubble-shaped membrane which is inserted with its opening edge into the water connection of the expansion vessel and forms the water space.
  • the membrane can also form the gas space.
  • Expansion vessels Of major disadvantage in these long-proven Expansion vessels is above all that with membranes made of an elastomeric material, especially over a long period of time, a certain permeation effect can not be avoided, so that from the gas space gas can penetrate into the water space and thus into the pipeline network, which is undesirable especially in heating circuits , This also reduces the gas volume in the gas space, which requires maintenance, since a refilling is necessary. This is associated with the corresponding effort.
  • the object of the invention is to further develop a generic membrane expansion vessel so that a permeation of gas from the gas space into the water space is reliably avoided without thereby significantly increasing the manufacturing and assembly costs.
  • a membrane expansion vessel of the type described characterized in that the membrane is formed from an at least single-layer elastic, gas-impermeable plastic.
  • a membrane expansion vessel available whose at least single-layer plastic membrane is both sufficiently elastic to allow the volume changes of the gas chamber with pressure increase in the system, as well as gas impermeable, whereby a permeation of gas, in particular of air or nitrogen, is avoided.
  • the plastic material for example, an ethylene-vinyl alcohol copolymer (EVOH) can be used as a base.
  • the membrane is formed from a plastic blend.
  • a plastic blend in particular a polymer blend, is a molecularly distributed or microscopically dispersed plastic alloy, ie a mixture of at least two base plastics or base polymers.
  • a base material then preferably has the required elastic properties and the other the gas barrier properties, the plastic blend as a whole is so elastic that the membrane function is met.
  • the membrane consists of an at least two-layered composite material with a first layer of an elastic plastic and a second layer of a gas-impermeable elastic plastic connected to the first layer.
  • the one layer serves as a carrier layer onto which, e.g. by coextrusion, the second layer is applied.
  • the membrane has an at least three-layer structure, wherein the third layer consists of an elastic plastic.
  • the second layer of a gas-impermeable elastic plastic is then embedded on both sides.
  • Adhesion promoters may be provided between the layers.
  • Such a membrane is suitable for both types of vessels described above.
  • the membrane is formed bubble-shaped and is connected with its opening edge gas-tight to the connection piece.
  • the connecting piece is an integral part of the membrane.
  • the water connection piece may for example be glued or welded to the membrane.
  • the membrane is formed as a flat or half-shell-shaped membrane, which is integrated gas-tight with its peripheral edge in the connection region between the two vessel parts.
  • an additional sealing element between the two vessel parts is unnecessary.
  • the two vessel parts are positively connected with each other in the connection area under the entrapment of the membrane edge.
  • the two vessel parts are integrally connected with the inclusion of the membrane edge.
  • the connection can in particular by gluing, possibly also by welding, take place, as, in principle, for example DE 100 01 542 A1 is known.
  • the membrane When using a flat or half-shell-shaped membrane, it is preferably provided that the membrane has a contour which is largely adapted to the contour of the vessel part bounding the water space. In the resting state, the membrane is then in contact with the inner wall of the vessel part delimiting the water space, the volume of the water space is therefore negligible, the full internal volume of the expansion vessel is filled by the gas space, which is filled with a gas under a given overpressure. If water enters the expansion vessel from the mains, the membrane inverts into the interior of the expansion vessel.
  • the inlet opening is arranged in the water space approximately centrally opposite to the membrane.
  • FIG. 1 A diaphragm pressure expansion vessel is in FIG. 1 generally designated 1.
  • This membrane expansion vessel 1 is formed in the embodiments as a flat vessel and suitable for insertion into a wall spa, for example. But it can also have a different geometric design, for example, when used in conjunction with a boiler.
  • the membrane pressure expansion vessel 1 has two half-shell-shaped vessel parts 2, 3 made of metal.
  • the two vessel parts 2, 3 can basically have any desired geometric shape, e.g. also oval or angular.
  • the vessel parts 2, 3 are connected to each other in a pressure-fluid-tight and fluid-tight manner in a circumferential connection area, generally designated 4.
  • a connecting piece 5 is arranged for connecting the diaphragm expansion vessel 1 to a not shown line network.
  • this connection piece 5 is pressure and gas tight, the opening edge of a bubble-shaped membrane 6 is connected.
  • This membrane 6 consists of an at least single-layer, elastic, gas-impermeable plastic.
  • FIG. 2 A first embodiment of such a membrane is in FIG. 2 shown.
  • the membrane 6, 6 ' (embodiment according to FIG. 4 ) consists of a plastic blend, ie a plastic alloy of at least two components, wherein the one component elastic Characteristics and the other has gas impermeable properties.
  • the gas impermeable component may be, for example, EVOH and, of course, also elastic to perform the membrane function.
  • the membrane 6, 6 ' consists of an at least two-layer composite material, in FIG. 3 is a three-layer structure shown.
  • This membrane 6, 6 ' consists of a first layer 6a of an elastic plastic, for example polypropylene, a second layer 6b of a gas-impermeable elastic plastic, for example EVOH and a third layer 6c, again of an elastic material, eg polypropylene.
  • an adhesion promoter can be provided between the layers.
  • Such a membrane 6, 6 'of a two- or three-layer composite material may e.g. be prepared by coextrusion.
  • the interior of the membrane 6 forms, as usual in such membrane expansion vessels, the water chamber 7 and is connected via the water connection piece 5 with the pipe network in connection.
  • the remaining interior of the membrane expansion vessel 1 forms the gas space 8.
  • This gas space 8 is provided with a gas under a predetermined positive pressure, e.g. Air, filled.
  • a gas filling opening 9 is provided, which e.g. is closed by means of a simple plug or a gas filling valve 10.
  • FIGS. 4 and 5 is a particularly preferred design of the bubble-shaped membrane 6, which corresponds to a structure FIGS. 2 or 3 has, at the ( FIG. 5 ) the water connection piece 5 is an integral part of the membrane 6.
  • the membrane 6 in the opening region on a flange-shaped opening 14 ( FIG. 4 ) at which the water connection 5 ( FIG. 5 ) is attached gas-tight, for example by gluing or welding.
  • the water connection piece 5 has a collar 5a, which rests tightly in the mounting position with Eisenklemmung a sealing ring on the vessel inner wall.
  • the connecting piece 15 with screw thread protrudes laterally out of the vessel. If such a membrane for a diaphragm pressure expansion vessel of the type after FIG. 1 are used, the flange-shaped opening 14 with connection piece 5, of course, not laterally, but centrally located.
  • FIG. 6 a second embodiment of a membrane expansion vessel is shown, which differs substantially by the geometric configuration of the membrane.
  • FIG. 6 6 'designated membrane is formed as a flat or half-shell-shaped membrane 6' and with its peripheral edge 13 circumferentially between the two half-shell-shaped vessel parts 2, 3 gas and pressure-tight manner.
  • the membrane 6 ' as the membrane 6 in the embodiment according to FIG. 1 , formed from a plastic material, at least single-layered, either from a plastic blend according to FIG. 2 or an at least two-layer composite plastic according to FIG. 3 ,
  • the membrane 6 'on a contour which is adapted to the half-shell-shaped contour of the vessel part 2 largely.
  • the invention is not limited to the illustrated embodiments. Further embodiments are possible without departing from the basic idea.
  • the two vessel parts 2, 3, as already mentioned also have a hemispherical shape or a similar shape.
  • the membrane 6, 6 'then has a corresponding shape.

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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)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
EP08017699A 2008-10-09 2008-10-09 Vase d'expansion avec membrane Withdrawn EP2175205A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08017699A EP2175205A1 (fr) 2008-10-09 2008-10-09 Vase d'expansion avec membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08017699A EP2175205A1 (fr) 2008-10-09 2008-10-09 Vase d'expansion avec membrane

Publications (1)

Publication Number Publication Date
EP2175205A1 true EP2175205A1 (fr) 2010-04-14

Family

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EP08017699A Withdrawn EP2175205A1 (fr) 2008-10-09 2008-10-09 Vase d'expansion avec membrane

Country Status (1)

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EP (1) EP2175205A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20100166A1 (it) * 2010-05-26 2011-11-27 Zilmet S P A Membrana per vasi di espansione
DE102011113028A1 (de) 2011-09-10 2013-03-14 Winkelmann Sp. Z.O.O. Membrandruckausdehnungsgefäß

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814162A1 (de) 1977-12-23 1979-06-28 Viatour Sa Membran-ausdehnungsgefaess
DE3544754A1 (de) 1985-12-18 1987-06-19 Viessmann Werke Kg Waermedehnungsausgleichsvorrichtung
EP0360648A1 (fr) 1988-09-20 1990-03-28 Automobiles Peugeot Membrane élastique imperméable et accumulateur hydropneumatique équipé de cette membrane
DE29517530U1 (de) * 1994-10-31 1995-12-21 Vaillant Joh Gmbh & Co Druckausdehnungsgefäß
FR2759743A1 (fr) * 1997-02-17 1998-08-21 Peugeot Membrane elastique impermeable aux gaz et accumulateur hydropneumatique equipe de cette membrane
US6199717B1 (en) * 2000-06-09 2001-03-13 Fu-Jen Tsai Container for storing and supplying water under pressure
DE10001542A1 (de) 2000-01-14 2001-08-02 Reflex Winkelmann & Pannhoff G Membranausdehnungsgefäß
DE202006015642U1 (de) * 2006-07-08 2007-01-11 Winkelmann Sp. Z.O.O. Membrandruckausdehnungsgefäß

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2814162A1 (de) 1977-12-23 1979-06-28 Viatour Sa Membran-ausdehnungsgefaess
DE3544754A1 (de) 1985-12-18 1987-06-19 Viessmann Werke Kg Waermedehnungsausgleichsvorrichtung
EP0360648A1 (fr) 1988-09-20 1990-03-28 Automobiles Peugeot Membrane élastique imperméable et accumulateur hydropneumatique équipé de cette membrane
US5036110A (en) 1988-09-20 1991-07-30 Automobiles Peugeot Impervious resilient membrane and hydropneumatic accumulator fitted with that membrane
DE29517530U1 (de) * 1994-10-31 1995-12-21 Vaillant Joh Gmbh & Co Druckausdehnungsgefäß
FR2759743A1 (fr) * 1997-02-17 1998-08-21 Peugeot Membrane elastique impermeable aux gaz et accumulateur hydropneumatique equipe de cette membrane
US6058976A (en) 1997-02-17 2000-05-09 Automobiles Peugeot Gas-impermeable elastic membrane and hydropneumatic accumulator equipped with this membrane
DE10001542A1 (de) 2000-01-14 2001-08-02 Reflex Winkelmann & Pannhoff G Membranausdehnungsgefäß
US6199717B1 (en) * 2000-06-09 2001-03-13 Fu-Jen Tsai Container for storing and supplying water under pressure
DE202006015642U1 (de) * 2006-07-08 2007-01-11 Winkelmann Sp. Z.O.O. Membrandruckausdehnungsgefäß

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20100166A1 (it) * 2010-05-26 2011-11-27 Zilmet S P A Membrana per vasi di espansione
DE102011113028A1 (de) 2011-09-10 2013-03-14 Winkelmann Sp. Z.O.O. Membrandruckausdehnungsgefäß
WO2013034508A2 (fr) 2011-09-10 2013-03-14 Winkelmann Sp. Z O.O. Vase d'expansion à membrane
WO2013034508A3 (fr) * 2011-09-10 2013-10-03 Winkelmann Sp. Z O.O. Vase d'expansion à membrane
JP2015500971A (ja) * 2011-09-10 2015-01-08 ヴィンケルマン・スプウカ・ス・オルガニザツィーノン・オトゥポビエジャルノシチョン ダイヤフラム圧力膨張容器
US8944109B2 (en) 2011-09-10 2015-02-03 Winkelmann Sp. Z O.O. Diaphragm pressure expansion vessel
AU2012306456B2 (en) * 2011-09-10 2016-09-08 Winkelmann Sp. Z O.O. Diaphragm pressure expansion vessel
EA024970B1 (ru) * 2011-09-10 2016-11-30 Винкельманн Сп. З О.О. Напорный расширительный резервуар мембранного типа
DE102011113028B4 (de) 2011-09-10 2019-01-10 Winkelmann Sp. Z.O.O. Membrandruckausdehnungsgefäß

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