EP1612489A1 - Hydraulische Weiche - Google Patents

Hydraulische Weiche Download PDF

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Publication number
EP1612489A1
EP1612489A1 EP05076170A EP05076170A EP1612489A1 EP 1612489 A1 EP1612489 A1 EP 1612489A1 EP 05076170 A EP05076170 A EP 05076170A EP 05076170 A EP05076170 A EP 05076170A EP 1612489 A1 EP1612489 A1 EP 1612489A1
Authority
EP
European Patent Office
Prior art keywords
hydraulic separator
liquid circuit
port leading
hydraulic
secondary liquid
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
EP05076170A
Other languages
English (en)
French (fr)
Other versions
EP1612489B1 (de
Inventor
Simon Eduard Niekolaas
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 EP1612489A1 publication Critical patent/EP1612489A1/de
Application granted granted Critical
Publication of EP1612489B1 publication Critical patent/EP1612489B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24D3/1091—Mixing cylinders
    • 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

Definitions

  • the present invention relates to a hydraulic separator, to be fitted between a primary liquid circuit and a secondary liquid circuit, in such a manner that the first and secondary liquid circuits are hydraulically independent.
  • the hydraulic separator has an elongate, preferably vertically positioned body with an internal space which is delimited by a wall and in which at least the following components are arranged: a feed port leading to the primary liquid circuit and a discharge port leading from the primary liquid circuit, which are located substantially on one longitudinal side of the hydraulic separator, and a feed port leading to the secondary liquid circuit and a discharge port leading from the secondary liquid circuit, which are located substantially on a different longitudinal side of the hydraulic separator.
  • the feed port leading to the primary liquid circuit and the discharge port leading from the secondary liquid circuit are located substantially at a first height region of the hydraulic separator.
  • the discharge port leading from the primary liquid circuit and the feed port leading to the secondary liquid circuit are located substantially at a different, second height region of the hydraulic separator.
  • a primary liquid circuit equipped with one or more pumps, together with a secondary liquid circuit with one or more pumps, are present in a single system for heating and/or cooling, working conditions may arise which cause the pumps to act on one another and thereby to abnormally influence the flow rates and working heads of the liquid circuits.
  • a hydraulic separator arranged in the manner described above creates a liquid region with a limited resistance, with the result that the first and secondary liquid circuits which are coupled to the hydraulic separator become hydraulically independent.
  • the flow rate passing through a circuit then depends exclusively on the flow rates of the associated pumps, since the limited resistance in the hydraulic separator ensures that flow in one liquid circuit does not cause any flow in the other circuit.
  • Heating and/or cooling systems of this type are used in particular in systems in which a plurality of boilers are connected in a cascade arrangement and/or in which a plurality of delivery systems with a dedicated pump are present. In known heating and cooling systems, there is a temperature gradient in the hydraulic separator.
  • a heating system one or more boilers and pumps are incorporated in the primary liquid circuit, and a plurality of radiators, each provided with dedicated pumps, are arranged in the secondary liquid circuit.
  • the object of the present invention is to provide a hydraulic separator of the abovementioned type in which the efficiency loss is reduced.
  • a device In this device, there is a set of open filler bodies which have a large surface area in relation to the volume which they take up both at the first height region and at the second height region of the internal space of the hydraulic separator. These sets form a resistance to the flow of liquid. This lowers the liquid flow rate in the hydraulic separator: both the flow rate at one height region and from one height region to the other. Lowering the flow rate reduces the mixing which occurs in the hydraulic separator, thereby lowering the loss of efficiency. By way of example, the efficiency is improved from 85% to 95%. As a result of this lower flow rate, hydraulic separators of a shorter length than is usual can achieve a satisfactory efficiency.
  • the sets of open filler bodies are then located only at the level of the feed and discharge ports. This is advantageous since otherwise the resistance in the hydraulic separator can become too great, with the result that there are no longer any bypass options and the systems become hydraulically dependent.
  • the open filler bodies prefferably be in the form of hollow cylindrical bodies comprising a cylindrical wall provided with openings and projections which extend inwards from the wall.
  • these bodies are known per se.
  • these bodies are PALL rings.
  • This cage may simply be placed as a unit into the hydraulic separator.
  • the cage is more advantageously block-shaped, in which case the sides between the feed port and the discharge port are shorter than the other sides, so that the flow of liquid is not subject to resistance as soon as it flows into the hydraulic separator.
  • a vent is fitted to the hydraulic separator.
  • the large surface area of the open filler bodies in relation to the volume which they take up means that any air that is present in the system is collected in these filler bodies.
  • the air will collect at the top of the hydraulic separator. If a vent is positioned here, this air can be discharged from the system.
  • a tap is fitted at the underside of the hydraulic separator. Any dirt which may be present and settles at the bottom of the hydraulic separator can be discharged through this tap.
  • Fig. 1 depicts a heating system 100 in which there is a hydraulic separator 3.
  • the hydraulic separator 3 is fitted between a primary liquid circuit 50 and a secondary liquid circuit 60, in such a manner that the primary liquid circuit 50 and secondary liquid circuit 60 are hydraulically independent.
  • the hydraulic separator 3 has an elongate body with an internal space 26 delimited by a wall 25.
  • a feed port 51 leading to the primary liquid circuit 50 and a discharge port 52 leading from the primary liquid circuit 50 are arranged in the wall 25, on the same longitudinal side of the hydraulic separator 3.
  • a feed port 62 leading to the secondary liquid circuit 60 and a discharge port 61 leading from the secondary liquid circuit 60 are also arranged in the wall, on the same longitudinal side but the opposite longitudinal side from the one on which the feed and discharge ports 51 and 52 of the primary liquid circuit 60 are located.
  • the feed port 51 leading to the primary liquid circuit 50 and the discharge port 61 leading from the secondary liquid circuit 60 are located at a first height region 30 of the hydraulic separator 3.
  • the discharge port 52 leading from the primary liquid circuit 50 and the feed port 62 leading to the secondary liquid circuit 60 are located at a different, second height region 40 of the hydraulic separator 3.
  • the primary liquid circuit 50 is equipped with heating boilers and burners 1, safety valves 4, purge valves 11, anti-thermosyphon valves 6, expansion tanks 5 and two pumps 2.
  • the secondary liquid circuit 60 comprises a boiler 7 and an anti-thermosyphon valve 6, heating circuits 8 with control means 10 and pumps 9.
  • An example in which liquid in the hydraulic separator 3 will flow from the discharge port 61 of the secondary liquid circuit 60 to the feed port 62 of the secondary liquid circuit 60 is if a heating circuit 8 is suddenly opened. A pump 9 will then require an additional flow of liquid, while the pumps 2 in the primary liquid circuit 50 do not yet allow this directly.
  • Fig. 2 shows a hydraulic separator 3 according to the invention, as can be implemented for example in the system 100.
  • Identical components are denoted by identical reference numerals.
  • This figure diagrammatically depicts sets of open filler bodies 20 at the first height region 30 and at the second height region 40. A free space without filler bodies is present between the first height region 30 and the second height region 40. These filler bodies 20 have a large surface area in relation to the volume which they take up.
  • a vent 21 is fitted at the top side of the hydraulic separator 3.
  • any air which may be present in the system is collected in these filler bodies.
  • the air will collect at the top of the hydraulic separator 3 and can be discharged from the system by the vent 21.
  • the hydraulic separator 3 is closed by a knob 22.
  • a removal valve can also be fitted here.
  • Fig. 3a diagrammatically depicts a plan view of a set of open filler bodies 20 in the hydraulic separator 3.
  • Figs. 3b and 3c respectively show a side view and a front view of the set of open filler bodies 20.
  • Fig. 3d shows PALL rings which can be used as sets of open filler bodies. It is advantageous for these sets of open filler bodies 20 to be arranged in a cage.
  • Fig. 3e shows a cage which can be used. This cage can simply be placed as a unit in the hydraulic separator 3.
  • Figs. 4a and 4b diagrammatically depict two hydraulic separators together with the feed and discharge ports.
  • Fig. 4a shows an exemplary embodiment of a known hydraulic separator
  • Fig. 4b shows an exemplary embodiment of a hydraulic separator according to the invention.
  • isotherms are used to indicate the temperature distribution in the respective hydraulic separators.
  • the isotherm a is located at the highest temperature
  • the isotherm b is located at the lowest temperature.
  • the intervening isotherms are arranged at equal temperatures in both figures.
  • Fig. 5 diagrammatically depicts two hydraulic separators together with the feed and discharge ports.
  • Fig. 5a shows an exemplary embodiment of a known hydraulic separator
  • Fig. 5b shows an exemplary embodiment of a hydraulic separator according to the invention.
  • lines with the same flow rate indicate the distribution of the flow rate in the respective hydraulic separators.
  • Line a is positioned at the highest flow rate and line b at the lowest flow rate.
  • the intervening lines are arranged at the same flow rates in both figures.

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)
  • Fluid-Pressure Circuits (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
EP05076170A 2004-06-30 2005-05-18 Hydraulische Weiche Not-in-force EP1612489B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1026533A NL1026533C2 (nl) 2004-06-30 2004-06-30 Evenwichtsfles.

Publications (2)

Publication Number Publication Date
EP1612489A1 true EP1612489A1 (de) 2006-01-04
EP1612489B1 EP1612489B1 (de) 2011-10-19

Family

ID=34974098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05076170A Not-in-force EP1612489B1 (de) 2004-06-30 2005-05-18 Hydraulische Weiche

Country Status (3)

Country Link
EP (1) EP1612489B1 (de)
AT (1) ATE529705T1 (de)
NL (1) NL1026533C2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20090197A1 (it) * 2009-10-09 2010-01-08 Diego Graziotto Equilibratore idraulico con dispositivi interni di separazione e sfogo aria, filtro in linea defangatore per decantazione ispezionabile, compatto per circuiti idraulici e di scambio termico.
DE102010061165B3 (de) * 2010-12-10 2012-03-01 Technische Universität Chemnitz Hydraulische Weiche
WO2012112049A1 (en) 2011-02-17 2012-08-23 Flamco B.V. Improved removal device for micro-bubbles and dirt particles
WO2012076009A3 (de) * 2010-12-10 2013-08-01 Technische Universität Chemnitz Hydraulische weiche
EP2995868A1 (de) * 2014-09-12 2016-03-16 Wefers Techn. Gebäudeausrüstung Heizung - Lüftung - Sanitär GmbH Flüssigkeitsbasiertes, geschlossenes Drucksystem mit einem ersten Flüssigkeitskreislauf und einem zweiten Flüssigkeitskreislauf
EP3217101A1 (de) 2016-03-08 2017-09-13 PAW GmbH & Co. KG Verfahren zur hydraulischen entkopplung mehrerer, parallel geschalteter fluidkreisläufe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407807A1 (de) * 1994-03-09 1995-09-14 Werner Krzyzik Hydraulische Weiche für Heizanlagen
FR2737282A1 (fr) * 1995-07-26 1997-01-31 Financ & Comm Chablais Bouteille d'homogeneisation pour installation de chauffage avec plancher chauffant

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407807A1 (de) * 1994-03-09 1995-09-14 Werner Krzyzik Hydraulische Weiche für Heizanlagen
FR2737282A1 (fr) * 1995-07-26 1997-01-31 Financ & Comm Chablais Bouteille d'homogeneisation pour installation de chauffage avec plancher chauffant

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20090197A1 (it) * 2009-10-09 2010-01-08 Diego Graziotto Equilibratore idraulico con dispositivi interni di separazione e sfogo aria, filtro in linea defangatore per decantazione ispezionabile, compatto per circuiti idraulici e di scambio termico.
DE102010061165B3 (de) * 2010-12-10 2012-03-01 Technische Universität Chemnitz Hydraulische Weiche
WO2012076009A3 (de) * 2010-12-10 2013-08-01 Technische Universität Chemnitz Hydraulische weiche
WO2012112049A1 (en) 2011-02-17 2012-08-23 Flamco B.V. Improved removal device for micro-bubbles and dirt particles
US9764256B2 (en) 2011-02-17 2017-09-19 Flamco B.V. Removal device for micro-bubbles and dirt particles
US10016702B2 (en) 2011-02-17 2018-07-10 Flamco B.V. Removal device for micro-bubbles and dirt particles
EP2995868A1 (de) * 2014-09-12 2016-03-16 Wefers Techn. Gebäudeausrüstung Heizung - Lüftung - Sanitär GmbH Flüssigkeitsbasiertes, geschlossenes Drucksystem mit einem ersten Flüssigkeitskreislauf und einem zweiten Flüssigkeitskreislauf
EP3217101A1 (de) 2016-03-08 2017-09-13 PAW GmbH & Co. KG Verfahren zur hydraulischen entkopplung mehrerer, parallel geschalteter fluidkreisläufe
DE102016002690A1 (de) 2016-03-08 2017-09-14 Paw Gmbh & Co. Kg Verfahren zur hydraulischen Entkopplung mehrerer, parallel geschalteter Fluidkreisläufe

Also Published As

Publication number Publication date
EP1612489B1 (de) 2011-10-19
ATE529705T1 (de) 2011-11-15
NL1026533C2 (nl) 2006-01-02

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