EP1008812A1 - Durchflusselement für Ausdehnungsgefäss - Google Patents

Durchflusselement für Ausdehnungsgefäss Download PDF

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Publication number
EP1008812A1
EP1008812A1 EP99204167A EP99204167A EP1008812A1 EP 1008812 A1 EP1008812 A1 EP 1008812A1 EP 99204167 A EP99204167 A EP 99204167A EP 99204167 A EP99204167 A EP 99204167A EP 1008812 A1 EP1008812 A1 EP 1008812A1
Authority
EP
European Patent Office
Prior art keywords
flow
guidance element
basic part
passage
expansion tank
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
EP99204167A
Other languages
English (en)
French (fr)
Other versions
EP1008812B1 (de
Inventor
Wilhelmus Franciscus Maria Keijzer
Stephan Johannes Lutje Beekhuis
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.)
Flamco BV
Original Assignee
Flamco 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 Flamco BV filed Critical Flamco BV
Publication of EP1008812A1 publication Critical patent/EP1008812A1/de
Application granted granted Critical
Publication of EP1008812B1 publication Critical patent/EP1008812B1/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
    • 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
    • F24D3/1041—Flow-through
    • 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 invention relates to a flow-through member for an expansion tank according to the preamble of claim 1.
  • a flow-through member of this nature is known, for example, from DE 296 21 353-U.
  • the flow-through member When secured in the connecting passage, the flow-through member forms at least two passages in the connecting passage of the expansion tank.
  • a through-flow expansion tank which is formed in this way is connected to a pipe of a water supply system.
  • the flow-through member projects through a connection socket of the connection piece, one end of the flow-through member extending all the way into a flow passage in the water supply system.
  • An inlet opening and an outlet opening are arranged in the corresponding end, which openings are on opposite sides of the end of the flow-through member, with their axes substantially parallel to the centre axis of the flow passage.
  • a drawback of the known flow-through member is that it is extremely complex and is therefore expensive to produce.
  • Another drawback of the known flow-through member is that it has to be positioned in a predetermined orientation in the connection piece so that it has the proper orientation in the flow passage of the water supply system.
  • the object of the present invention is to provide a flow-through member which does not have the abovementioned drawbacks.
  • the flow-through member according to the invention is relatively simple and therefore unexpensive.
  • the orientation of the flow-guidance element can be independent of the orientation of the basic part.
  • the invention also relates to an expansion tank provided with a flow-through member according to the invention.
  • the flow-through member 1 which is shown in Figure 1 comprises a basic part 1a with a cylindrical sleeve 4 which is preferably circular in cross section.
  • One end of the cylindrical sleeve 4 has a flange edge 5, by means of which the basic part 1a can bear against an internal surface of an expansion tank 3 (cf. Figure 2).
  • That end of the cylindrical sleeve 4 which is provided with the flange edge 5 forms a first connection end of the flow-through member 1, by means of which the flow-through member 1 can be placed in communication with a liquid-holding space of the expansion tank 3 in which the flow-through member 1 is mounted.
  • the opposite end of the flow-through member 1 forms a second connection end, by means of which the flow-through member 1 can be placed in communication with a flow passage of a water supply system.
  • the outside contour of the cylindrical sleeve 4 substantially corresponds to the inside contour of the connection nipple 2 of the expansion tank 3 in question, the connection nipple 2 defining a connecting passage of the expansion tank 3.
  • the cylindrical sleeve 4 can be fitted into the connection nipple 2, and friction between an inner surface of the connection nipple 2 and an outer surface of the cylindrical sleeve 4 brings about coupling between the cylindrical sleeve 4 and the connection nipple 2.
  • the coupling can be made stronger by arranging elastically deformable clamping edges on the outer circumference of the cylindrical sleeve 4, so that the cylindrical sleeve 4 can be fixed immovably in the connection nipple by means of a press-fit.
  • the cylindrical sleeve 4 preferably extends from the inner surface of the expansion tank 3 to an outer edge of the connection nipple 2.
  • the basic part 1a furthermore comprises an inner sleeve 7 which is preferably arranged concentrically in the cylindrical sleeve 4. Spacers 6 ensure that the inner sleeve 7 is positioned concentrically in the cylindrical sleeve 4.
  • the space inside the inner sleeve 7 forms at least part of a first flow-through passage 30, and the space between the cylindrical sleeve 4 and the inner sleeve 7 forms a second flow-through passage 40.
  • the inner sleeve 7 preferably extends from the first connection end of the flow-through member 1 to the plane of the outer edge of the connection nipple 2.
  • a preferably tubular flow-guidance element 14 is arranged in the inner sleeve 7.
  • the flow-guidance element 14 is arranged rotatably in the inner sleeve 7.
  • the inner sleeve 7 has an internal diameter which is stepped, so that a stop 19 is formed, defining the maximum depth for the flow-guidance element 14 to be placed in the inner sleeve 7.
  • an encircling rib 15 is arranged on the outer circumference of the flow-guidance element 14, in the vicinity of that end of the flow-guidance element 14 which has been pushed into the inner sleeve 7.
  • An associated groove 16, which interacts with the rib 15 in order to lock the flow-guidance element 14 in the inner sleeve 7, is arranged in the inner wall of the inner sleeve 7.
  • the dimensions of the rib 15 and the groove 16 allow a rotary movement of the flow-guidance element 14.
  • the rib 15 may also be arranged on the inner wall of the inner sleeve 7, with the associated groove 16 on the outer circumference of the flow-guidance element 14.
  • the flow-guidance element 14 may have an incision which extends from the end which has been pushed into the inner sleeve 7, over a predetermined distance in the longitudinal direction of the flow-guidance element 14.
  • the flow-guidance element 14 is fitted into the inner sleeve 7 from the side of the second connection end of the flow-through member 1.
  • two or more grooves 16 are formed in the inner wall of the inner sleeve 7.
  • the free end of the flow-guidance element 14 lies at a distance from the basic part 1a.
  • an inlet opening 8 is arranged on the circumference of the tubular flow-guidance element 14.
  • the flow-guidance element 14 has a bended end wall which also defines a part of the contour of the inlet opening 8 (fig. 1).
  • the inlet opening allows water to flow into the flow-guidance element 14, the direction of flow as the water flows in forming an angle with the centre axis of the flow-guidance element 14.
  • the free end of the flow-guidance element 14 is shaped in such a way that a liquid which is flowing inwards through the inlet opening 8 at least during operation flows to the first connection end of the flow-through member 1 via the first flow-through passage 30.
  • an expansion tank which is provided with a flow-through member 1 according to the invention is used in a water supply system
  • the expansion tank is connected to the water supply system in such a manner that the first connection end of the flow-through member 1 is in communication with a flow passage in the water supply system.
  • the flow-guidance element 14 projects so far beyond the basic part 1a that the free end which has the inlet opening 8 is located in the flow passage in question, all this in such a manner that the outlet opening can direct itself towards the upstream direction of a flow which is present in the flow passage at least during operation.
  • Figure 2 shows part of the expansion tank 3 (in cross section) in which a flow-through member 1 according to the invention is arranged.
  • the basic part 1a is pressed into the connection nipple 2 of the expansion tank 3 so far that the flange edge 5 bears against the inner wall of the expansion tank 3.
  • connection nipple 2 is provided with an external screw thread, so that the expansion tank 3 can be screwed into a suitable connecting means of a water supply system.
  • the expansion tank shown in Figure 2 is connected to the water supply system with the aid of a conventional T-piece 9.
  • the T-piece 9 has a first connection sleeve 10 and a second connection sleeve 11 which are coaxial and between which a main flow passage 50 is formed.
  • the T-piece 9 also has a connection socket 12, the centre axis of which is preferably perpendicular to the common centre axis of the first connection sleeve 10 and the second connection sleeve 11.
  • the connection socket 12 is provided with an internal screw thread, by means of which the T-piece 9 can be screwed onto the connection nipple 2, which is provided with an external screw thread, of the expansion tank 3.
  • the free end of the flow-guidance element 14 which has the inlet opening 8 is situated between the first connection sleeve 10 and the second connection sleeve 11, in the main flow passage 50.
  • the free end of the flow-guidance element 14 is preferably located substantially at the level of the common centre axis of the first connection sleeve 10 and the second connection sleeve 11. In the position shown in Figure 2, the inlet opening 8 faces towards the first connection sleeve 10.
  • a surface which is defined by the contour of the inlet opening 8 has a projected surface which lies on a plane which is perpendicular to the centre axis of the flow passage 50.
  • the thrust pressure causes an increase in pressure in the first flow-through passage 30, while in the downstream direction of the main flow through the T-piece 9 the pressure of the water is reduced with respect to the flow-guidance element 14.
  • a directing element 18 is arranged on the outer surface of the flow-guidance element 14, in the vicinity of the free end.
  • the water exerts a force which is directed in the direction of flow on the directing element 18. If the surface of the directing element 18 forms an angle with the direction of flow of the flowing water, the force which the water exerts on the directing element 18 causes a moment force, with the result that the flow-guidance element 14 rotates until the surface of the directing element 18 substantially coincides with the direction of flow.
  • the directing element 18 thus acts as a vane.
  • the expansion tank 3 having the flow-through member 1 according to the invention is suitable for any system of pipes which has a connection socket 12 with dimensions which corresponds to the dimensions of the connection nipple 2 of the expansion tank 3.
  • the connection socket 12 may also, for example, be welded directly onto a pipe in the system of pipes.
  • the expansion tank 3 may also be connected to the system of pipes in other ways, for example with the aid of a nut.
  • the cylindrical sleeve 4 and the inner sleeve 7 are concentric in the preferred embodiment illustrated in Figures 1 and 2.
  • the inner sleeve 7 is positioned in the cylindrical sleeve 4 with the aid of four spacers 6.
  • the number of spacers is preferably 3 or more, so that the inner sleeve 7 is positioned in the cylindrical sleeve 4 in a stable, vibration-free manner.
  • the cylindrical sleeve 4, the spacers 6 and the inner sleeve 7 form a single unit.
  • Figures 3 and 4 show two variants of the flow-through member 1, which can be arranged in the connection nipple 2 of the expansion tank 3 if it has not already been provided with the flow-through member 1 during assembly.
  • the flow-through member 1 shown in Figure 3 corresponds to the flow-through member 1 shown in Figure 2, except that the flange edge 5 has been removed from the basic part 1a and the basic part 1a is provided with a flange 21 on the side of the second connection end of the flow-through member 1.
  • the flange 21 bears against the outer edge of the connection nipple 2. If a suitable material is selected, the flange 21 can be used as a sealing ring between the connection nipple 2 and the connection socket 12.
  • the inner sleeve 7 has been eliminated and grooves 16 are arranged in the spacers 6, in which grooves the rib 15 of the flow-guidance element 14 can be positioned.
  • the flow-guidance element 14 extends at least as far as the first connection end of the flow-through element 1. If desired, openings may be formed in that end of the flow-guidance element 14 which is located in the vicinity of the first connection end, through which openings water can flow in the radial direction.
  • FIG. 5 shows the flow-through member 1 shown in Figure 1, with a V-shaped directing element 18 arranged on the flow-guidance element 14. Consequently, the flow-guidance element 14 will rotate into the correct position more quickly. Moreover, the V-shaped directing element 18 causes downstream turbulence in the water, resulting in a greater difference between the pressure in the first flow-through passage 30 and the pressure in the main flow passage 50 downstream of the flow-guidance element 14. This has a beneficial effect on the flow through the expansion tank 3.
  • the flow-through member according to the invention is made from a material which is simple to process, such as a plastics material.
  • the flow-through member may also be made from any other material which is suitable for use in a water supply system, such as stainless steel or brass.
  • a flow-through member 1 of this nature can be arranged in an expansion tank which has already been assembled.
  • first flow-through passage 30 and the second flow-through passage 40 may be eccentric with respect to one another.
  • the basic part 1a may comprise a solid part with a first hole in which the flow-guidance part 14 can be arranged, and a plurality of drilled holes with a smaller diameter than the diameter of the first hole, in order to allow water flowing through the first hole to flow back.
  • the inlet opening 8 and the directing vane 18 are arranged in or on a separate element which is positioned rotatably over an axial opening at the free end of the flow-guidance element 14.
  • the flow-guidance element 14 may be provided, on the side of the inlet opening 8, with a projecting edge which is perpendicular to the outer circumference and closes off part of the second flow-through passage 40.

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)
  • Pipe Accessories (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Joints Allowing Movement (AREA)
  • Sanitary Device For Flush Toilet (AREA)
EP19990204167 1998-12-07 1999-12-06 Durchflusselement für Ausdehnungsgefäss Expired - Lifetime EP1008812B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1010744A NL1010744C2 (nl) 1998-12-07 1998-12-07 Expansievat voorzien van een doorstroomorgaan.
NL1010744 1998-12-07

Publications (2)

Publication Number Publication Date
EP1008812A1 true EP1008812A1 (de) 2000-06-14
EP1008812B1 EP1008812B1 (de) 2003-06-25

Family

ID=19768267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990204167 Expired - Lifetime EP1008812B1 (de) 1998-12-07 1999-12-06 Durchflusselement für Ausdehnungsgefäss

Country Status (3)

Country Link
EP (1) EP1008812B1 (de)
DE (1) DE69909043T2 (de)
NL (1) NL1010744C2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1018623B1 (de) * 1999-01-07 2003-10-01 Flamco B.V. Strömungsverteiler
EP3048374A1 (de) 2015-01-22 2016-07-27 Global Water Solutions Ltd. NACHRÜSTBARE DURCHLAUFVERBINDERANORDNUNG UND AUSDEHNUNGSGEFÄßVORRICHTUNG

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8507703U1 (de) * 1985-03-15 1985-08-01 Flamco B.V., Gouda Anschlußstück für ein Ausdehnungsgefäß
DE19609375C1 (de) * 1996-02-29 1997-06-12 Otto Heat Heizungs Anschlußarmatur für ein Ausdehnungsgefäß

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8507703U1 (de) * 1985-03-15 1985-08-01 Flamco B.V., Gouda Anschlußstück für ein Ausdehnungsgefäß
DE19609375C1 (de) * 1996-02-29 1997-06-12 Otto Heat Heizungs Anschlußarmatur für ein Ausdehnungsgefäß

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1018623B1 (de) * 1999-01-07 2003-10-01 Flamco B.V. Strömungsverteiler
EP3048374A1 (de) 2015-01-22 2016-07-27 Global Water Solutions Ltd. NACHRÜSTBARE DURCHLAUFVERBINDERANORDNUNG UND AUSDEHNUNGSGEFÄßVORRICHTUNG
EP3051151A1 (de) 2015-01-22 2016-08-03 Global Water Solutions Ltd. Nachrüstbare durchlaufverbinderanordnung für eine ausdehnungsgefässvorrichtung

Also Published As

Publication number Publication date
DE69909043D1 (de) 2003-07-31
DE69909043T2 (de) 2004-05-19
NL1010744C2 (nl) 2000-06-08
EP1008812B1 (de) 2003-06-25

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