EP0733863A2 - Vase d'expansion - Google Patents

Vase d'expansion Download PDF

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Publication number
EP0733863A2
EP0733863A2 EP96103700A EP96103700A EP0733863A2 EP 0733863 A2 EP0733863 A2 EP 0733863A2 EP 96103700 A EP96103700 A EP 96103700A EP 96103700 A EP96103700 A EP 96103700A EP 0733863 A2 EP0733863 A2 EP 0733863A2
Authority
EP
European Patent Office
Prior art keywords
membrane
section
container
pressure compensation
approximately
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.)
Granted
Application number
EP96103700A
Other languages
German (de)
English (en)
Other versions
EP0733863A3 (fr
EP0733863B1 (fr
Inventor
Horst Böhme
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.)
Franz Kaldewei GmbH and Co KG
Original Assignee
Franz Kaldewei GmbH and Co KG
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 Franz Kaldewei GmbH and Co KG filed Critical Franz Kaldewei GmbH and Co KG
Publication of EP0733863A2 publication Critical patent/EP0733863A2/fr
Publication of EP0733863A3 publication Critical patent/EP0733863A3/fr
Application granted granted Critical
Publication of EP0733863B1 publication Critical patent/EP0733863B1/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
    • F24D3/10—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
    • 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

Definitions

  • the present invention relates to a pressure compensation vessel for accommodating changes in volume of a quantity of a liquid which is responsive to temperature changes, with a rigid container housing which has a supply connection and an outlet connection for the liquid and an expandable membrane which can be fastened in the housing and which separates the interior of the container into a liquid space and divides a gas space, the membrane having an area with an approximately star-shaped fold in cross section in the unexpanded initial state.
  • a pressure compensation vessel of the type mentioned at the beginning is e.g. known from German utility model 19 85 404 (U1).
  • the membrane has an area with an approximately star-shaped fold in cross section in the unstretched initial state. This cross-sectional shape, which differs from the circular shape, results in a gentler stress and deformation of the membrane during expansion.
  • EP-A-0 137 322 discloses a pressure compensation container in which the inlet and outlet connections are arranged axially at the bottom and top of the container and the membrane extends concentrically in the longitudinal direction in the center of the approximately cylindrical container, so that the gas space defines the liquid space concentrically surrounds.
  • the membrane in this known surge tank is a cylindrical tubular membrane in the unstretched state. When this hose membrane expands due to increasing water pressure, undefined folds can result, so that water pockets are formed in which residual water is not completely exchanged, which in turn causes the problem of bacterial formation.
  • the object of the present invention is to provide a pressure compensation vessel of the type mentioned at the outset with a membrane which has a high wear resistance, always expands and contracts in a defined manner, so that undefined folds can be formed with undesired water pockets and in which a better length compensation is given with a pressure-loaded membrane.
  • a pressure compensation vessel according to the invention of the type mentioned at the outset with the characterizing features of the main claim.
  • the ring beads present according to the invention and the concave curvatures improve the length compensation when the membrane is under pressure.
  • the membrane In the unstretched initial state, the membrane is also folded, so that there is approximately a star shape in cross section. With increasing liquid pressure in the liquid space inside the membrane, the concave sections of the star-shaped membrane are pressed outwards, so that the membrane approximates a cylindrical shape. If the liquid pressure in the interior of the membrane decreases again, then this takes on the originally predetermined star-shaped fold again.
  • Such a membrane has a high expansion potential and is therefore very wear-resistant. It expands and contracts again like a lung.
  • the membrane is preferably placed in an approximately cylindrical container with a lid part and bottom part in the lid area or bottom area, e.g. held by a flange that is clamped to parts of the container in the lid area or bottom area.
  • the membrane preferably extends in the longitudinal direction in the container, with the inside of the liquid space, which is concentrically surrounded by the gas space and the liquid space is fed via inlet and outlet connections attached above and below in the axial region of the container.
  • a supporting plate with openings for the gas passage surrounding it is preferably provided to support the expanded membrane.
  • a second support tube is attached within it. This perforated tube, which can correspond to the tube for the water supply, prevents the membrane from completely closing inwards and ensures the possibility of constant water flow in the unexpanded initial state of the folded membrane.
  • the membrane Above a section with the approximately star-shaped cross section and / or below this section, the membrane also has an annular bead.
  • a concave curvature is present at the top and / or at the bottom between the annular bead and the star-shaped section.
  • the star-folded part can have three or more star arms distributed over the circumference in a symmetrical arrangement with concavely curved sections in between.
  • FIG. 1 shows the fold membrane in the lower part in a side view, in the upper part in a vertical longitudinal section.
  • the fold membrane 10 has a fastening flange 11 at the top, which is formed by a type of fold, and at the lower end there is a corresponding fastening flange 15 for fastening in the surge tank.
  • the wall of the fold membrane 10 initially runs in an upper annular section 13.
  • a bulge 17 adjoins this annular bead toward the bottom.
  • the wall of the fold membrane 10 runs outwards again and opens into a longer section 16 which, as can be seen from FIG.
  • the section according to FIG. 1 shows the transition region 17 between the upper annular bead 13 and the star-folded section 16 in its greatest width dimension. It can be seen from FIG. 2 that this star-shaped fold 16 extends over the circumference of the fold membrane seen has four symmetrical arms 16a, between each of which concave wider sections 16b connecting them.
  • the section Fig. 1 thus runs through an arm 16a of the star fold.
  • the section FIG. 3, on the other hand, runs through the narrowest section 16b of the concave curvature of the area folded in a star shape.
  • the mounting flange 11 is not round but is provided with a flattened portion 12 on two opposite sides.
  • the four arms 16a of the star-shaped fold protrude somewhat further outwards than the upper annular bead 13.
  • the fold membrane 10 is concavely curved again and merges upwards into the star-shaped section 16.
  • FIG. 4 now shows a pressure compensation container according to the invention with a built-in fold membrane 10.
  • the entire container is designated by reference number 20. It consists of an upper part 20a and a lower part 20b, which are welded together.
  • the container 20 has an approximately cylindrical shape, the cylindrical wall merging into a flat lid section at the top and into a flat bottom section at the bottom.
  • holding devices 29 are provided at the top and bottom, which clamp the fastening flange 11 or 15 in the lid region of the container wall or in the bottom region of the container wall.
  • a water pipe 21 extends concentrically through the container 20, through which water reaches the container through the upper feed pipe 25. On the underside, the water is discharged via the outlet connection 28.
  • the water pipe 21 has openings 22 through which the Water gets into the liquid space 23 inside the fold membrane 10.
  • the gas space 24 is located outside the fold membrane.
  • a support plate 26 is also provided with openings 27, on which the fold membrane 10, which expands as the pressure in the liquid space 23 increases, is supported.
  • the star-shaped folding of the fold membrane 10 according to the invention leads to a defined expansion or contraction of the fold membrane and prevents the formation of water pockets. The residual water can thus always be completely replaced.
  • the annular beads 13, 14 and the concave curvatures serve to compensate for the length when the membrane is under pressure.
  • the gas filling valve 30 for filling the gas space of the surge tank is mounted in the region of the wall on the top thereof and at a distance from the axis of the container.
  • the opening of the gas filling valve 30 points outwards at an angle of 45 ° to the cylinder axis of the container. Other angles to the cylinder axis of the container are also possible.
  • the gas filling valve 30 is particularly easily accessible to an operator through this arrangement according to the invention.

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)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Measuring Fluid Pressure (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
EP96103700A 1995-03-22 1996-03-09 Vase d'expansion Expired - Lifetime EP0733863B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19510360A DE19510360C2 (de) 1995-03-22 1995-03-22 Druckausgleichsgefäß
DE19510360 1995-03-22

Publications (3)

Publication Number Publication Date
EP0733863A2 true EP0733863A2 (fr) 1996-09-25
EP0733863A3 EP0733863A3 (fr) 1997-03-26
EP0733863B1 EP0733863B1 (fr) 1999-09-08

Family

ID=7757358

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103700A Expired - Lifetime EP0733863B1 (fr) 1995-03-22 1996-03-09 Vase d'expansion

Country Status (3)

Country Link
EP (1) EP0733863B1 (fr)
AT (1) ATE184387T1 (fr)
DE (3) DE19510360C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023147089A1 (fr) * 2022-01-28 2023-08-03 Taco, Inc. Vase d'expansion à tête de collecteur à écoulement actif

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19653776C1 (de) * 1996-12-21 1998-04-30 Winkelmann & Pannhoff Gmbh Ausdehnungsgefäß
DE102004016220A1 (de) * 2004-04-01 2005-11-03 Thermo-Technik-Systeme Gmbh Ausgleichsgefäß für Warmwasserheizkreisläufe
EP2182294B1 (fr) 2008-10-28 2017-03-01 Reflex Winkelmann GmbH Vase d'expansion
FR2970561A1 (fr) * 2011-01-13 2012-07-20 Atlantic Industrie Sas Dispositif de compensation de dilatation
DE102011053053B4 (de) * 2011-08-26 2023-06-15 Cummins Ltd. Fluidleitung
EP2918737A1 (fr) * 2014-03-13 2015-09-16 Varem S.p.A. Récipient d'expansion, en particulier pour des systèmes de plomberie avec une unité de pompage d'eau
IT201900016181A1 (it) * 2019-09-12 2021-03-12 Dab Pumps Spa Vaso di espansione con membrana e pompa comprendente tale vaso di espansione

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1985404U (de) * 1967-01-16 1968-05-16 Junkers & Co Ausdehnungsgefaess fuer eine gesclossene zentralheizunsanlage, insbesondere mit einem gasbeheizten umlauf-wassererhitzer als waermequelle.
GB1373013A (en) * 1972-03-06 1974-11-06 Miles D Expansion compensating means for heating systems
NL8100723A (nl) * 1981-02-13 1982-09-01 Flamco Bv Expansievat.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7417124U (de) * 1974-09-19 Gebr Otto Kg Druckausdehnungsgefäß für Warmwasserheizungen
DE3336512C2 (de) * 1983-10-07 1986-03-27 Winkelmann & Pannhoff Gmbh, 4730 Ahlen Ausdehnungsgefäß
DE8507701U1 (de) * 1985-03-15 1985-06-20 Flamco B.V., Gouda Ausdehnungsgefäss

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1985404U (de) * 1967-01-16 1968-05-16 Junkers & Co Ausdehnungsgefaess fuer eine gesclossene zentralheizunsanlage, insbesondere mit einem gasbeheizten umlauf-wassererhitzer als waermequelle.
GB1373013A (en) * 1972-03-06 1974-11-06 Miles D Expansion compensating means for heating systems
NL8100723A (nl) * 1981-02-13 1982-09-01 Flamco Bv Expansievat.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023147089A1 (fr) * 2022-01-28 2023-08-03 Taco, Inc. Vase d'expansion à tête de collecteur à écoulement actif

Also Published As

Publication number Publication date
DE19510360A1 (de) 1996-09-26
ATE184387T1 (de) 1999-09-15
DE19510360C2 (de) 1999-09-02
DE29520889U1 (de) 1996-04-18
DE59602983D1 (de) 1999-10-14
EP0733863A3 (fr) 1997-03-26
EP0733863B1 (fr) 1999-09-08

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