EP0313599B1 - Dispositif de transfert d'expansion dans des circuits de liquide, notamment d'installations de chauffage ou de refrigeration - Google Patents

Dispositif de transfert d'expansion dans des circuits de liquide, notamment d'installations de chauffage ou de refrigeration Download PDF

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Publication number
EP0313599B1
EP0313599B1 EP88903736A EP88903736A EP0313599B1 EP 0313599 B1 EP0313599 B1 EP 0313599B1 EP 88903736 A EP88903736 A EP 88903736A EP 88903736 A EP88903736 A EP 88903736A EP 0313599 B1 EP0313599 B1 EP 0313599B1
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EP
European Patent Office
Prior art keywords
expansion vessel
liquid
pressure
expansion
heating
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
EP88903736A
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German (de)
English (en)
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EP0313599A1 (fr
Inventor
Anton Schwarz
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A Schwarz and Co
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A Schwarz and Co
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Publication date
Application filed by A Schwarz and Co filed Critical A Schwarz and Co
Publication of EP0313599A1 publication Critical patent/EP0313599A1/fr
Application granted granted Critical
Publication of EP0313599B1 publication Critical patent/EP0313599B1/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

Definitions

  • the invention relates to a device for taking over expansion in liquid circulation systems, in particular heating or cooling systems, with at least one expansion vessel, preferably in gas exchange with the atmosphere, into which liquid is taken up from the liquid circulation system via an inlet line and from the liquid via an outlet line and a Pressure pump is fed back to the liquid circulation system and an overflow valve that is adjustable to the operating pressure of the system is provided in the feed line to the expansion vessel, and a lower pressure prevails in the expansion vessel than in the liquid circulation system.
  • a device is known for example from BE-A-725 526.
  • heating or cooling of the heating liquid causes a change in volume.
  • the additional volume must be removed from the liquid circuit during heating and returned to the liquid circuit when cooling.
  • it is known to transfer the excess heating fluid caused by the thermal expansion into an open expansion vessel and to supply heating fluid to the liquid circuit again when it cools down.
  • Closed expansion vessels are also known for this purpose.
  • a solenoid valve is usually opened and the heating liquid is released from the circuit into the expansion vessel. If the pressure in the system drops, the pressure pump is switched on and heating fluid is pumped out of the expansion vessel into the fluid circuit.
  • Another example of such a system can be found in DE-A1-25 16 424. This intermittent removal and recirculation of heating fluid from or into the fluid circuit results in considerable pressure fluctuations in the system. Analogous conditions also occur in cooling systems.
  • the object of the invention is therefore to improve a device of the type mentioned above in such a way that the pressure compensation takes place smoothly and practically without pressure fluctuations in the liquid circulation system.
  • inlet and outlet lines which connect the expansion vessel to the liquid circulation system are separate lines which open out at separate points in the feed line or the return line of the liquid circulation system, and in that a continuously running outlet line from the expansion vessel Pressure and circulation pump is arranged.
  • the pressure and circulation pump continuously pumps liquid from the expansion vessel into the circulatory system and, with the appropriate dimensions, ensures that the operating pressure in the circulatory system is maintained, to which the overflow valve in the supply line to the expansion vessel is set.
  • at least a partial flow of the circulating liquid flows continuously through the overflow valve or the expansion vessel.
  • the phase of cooling the circulating liquid more liquid is conveyed from the expansion tank into the circulatory system than flows into the expansion vessel via the overflow valve. The liquid level in the expansion tank drops again. All of this happens practically without fluctuations in the operating pressure in the circulatory system.
  • the amount of water delivered by the pump determines the flow through the valve.
  • the pressure circuit does not have to be monitored.
  • the expansion vessel It is possible to lead only a partial flow of the system liquid (heating liquid) via the expansion vessel or, especially in the case of smaller heating systems, to conduct the full liquid stream via the inlet line, the expansion vessel and the outlet line.
  • the pressure and circulation pump arranged in the drain line from the expansion vessel can also take over the function of the system circulation pump, so that a further system circulation pump in the liquid circulation system is not necessary.
  • An embodiment variant of the invention provides that at least one further expansion vessel is connected to the expansion vessel.
  • This measure means that expansion vessels of different sizes and capacity do not have to be manufactured for different plant sizes. It is sufficient to produce an expansion vessel in a standard size, to which further additional expansion vessels are then connected in larger systems. Since these additional expansion vessels have no pumps or valves, the costs can be kept low.
  • the overflow valve in the inlet line to the expansion vessel causes, on the one hand, that in the flow direction upstream of the overflow valve (i.e. in the liquid circulation system) the operating pressure to which the overflow valve is set prevails, on the other hand that in the direction of flow behind the overflow valve (ie in the expansion vessel) there is a lower pressure than the operating pressure of the system.
  • the overflow valve which is open, ie which is in gas exchange with the atmosphere, this is practically the atmospheric pressure.
  • the oxygen uptake can also be reduced by a (preferably biodegradable) barrier liquid above the water level.
  • a barrier liquid above the water level.
  • this takes place in that the expansion vessel has a siphon at the gas outlet, which is filled with a sealing liquid, for example oil.
  • the drawing shows the diagram of a device according to the invention for a heating system.
  • the circulation system of the heating system exists; from the boiler 1, the liquid line 2 (flow) or 2 '(return) and radiators (e.g. radiators) 3.
  • the liquid circuit is maintained (or supported) by a system circulation pump 25.
  • a heating or Circulated liquid is preferably filtered and softened tap water.
  • an expansion vessel 4 which is connected to the supply line 2 of the system via an inlet line 5 and an outlet line 6.
  • the connections of the inlet line 5 and the outlet line 6 in the inlet line 2 are arranged relatively close behind the boiler 1 in order to use the thermal degassing. This type of connection is particularly suitable for water temperatures up to approx. 90 ° C.
  • the connection of the inlet line 5 and the outlet line 6 is better in the return line 2 '.
  • the full liquid flow can also be conducted via the expansion vessel 4, in which case the connecting line 2A between the inlet line 5 and the outlet line 6 is omitted.
  • the overflow valve 7 is located in the feed line 5 and can be adjusted to the system pressure.
  • the actual pressure of the heating system can be read from a manometer 8. In heating systems, there is usually an overpressure of at least 1.5 bar in the liquid circulation system (depending on the height of the building).
  • a continuously operating pressure and circulation pump 9 is located in the discharge line 6. It is followed in the flow direction by a flow control valve 10 and a flow meter 24.
  • a solenoid valve 11 is provided both in the inlet line 5 and in the outlet line 6. (In the drain line 6 it can also be a check valve).
  • a lower level controller is located in the expansion vessel 4 12 for the fresh water make-up (19 to 23) and an upper level controller 13 for securing the outlet of the expansion tank (at 15). If the water level 14 exceeds the level of the level controller 13, the solenoid valves 11 are closed and the expansion vessel 4 is separated from the system circuit.
  • the heat generator (burner) can also be switched off via the level controller 12, 13. Furthermore, the expansion vessel 4 and the heat generator can be switched off by pressure monitoring (for example by a pressostat) in the case of overpressure or underpressure in the system.
  • the gas outlet 15 of the expansion vessel 4 is provided with a siphon 16 which is filled with a barrier liquid 17. Both pipe legs of the siphon 16 have areas 16 'enlarged cross-section to prevent leakage of the sealing liquid with slight pressure fluctuations.
  • An additional expansion vessel 18 is drawn with dashed lines and can optionally be connected to the expansion vessel 4.
  • Line 19 is an inlet line for fresh water. Fresh water is pumped into the expansion vessel 4 when the water level 14 falls below the level of the lower level regulator 12.
  • the fresh water supply line 19 is provided with a water meter 20, a solenoid valve 22, a pipe separator 23 and a flow control valve 21.
  • the fresh water supply line can also be connected to the expansion vessel 4 at another point.
  • an "automatic" fresh water replenishment does not necessarily have to be provided (which controls the solenoid valve 22 via the level controller 12).
  • the essential feature of the device according to the invention is that at least a partial flow of the heating liquid (heating water) is passed through the expansion vessel 4 in a continuous flow, which is connected via the inlet line 5 and the outlet line 6 to the liquid line (feed line 2 or return line 2 ') of the system is.
  • heating fluid flows continuously via the overflow valve 7 into the expansion vessel 4 and the heating fluid is continuously returned from the expansion vessel 4 into the circulatory system or into the fluid line 2, since the circulation pump 9 works continuously.
  • the same amount of liquid is not always conveyed into the expansion vessel 4 as it flows out of it.
  • more liquid flows into the expansion vessel 4 than from it.
  • the water level 14 rises.
  • the water level 14 drops because more liquid is conveyed from the expansion vessel 4 into the circulatory system than flows in via the overflow valve 7.
  • the heating fluid is also degassed.
  • the water level 14 rises, displaced air escapes in bubbles through the barrier liquid 17 in the siphon 16. If the water level 14 drops, air from the outside again penetrates into the expansion vessel 4, but is "braked” due to the barrier liquid 17, which hinders the (re) absorption of air or air components (eg oxygen) in the heating fluid.
  • the lockable solenoid valves 11, as already mentioned, only serve to secure the system in the event of malfunctions and do not function during normal operation of the heating system.
  • a device according to the invention in a heating system has been described. However, it could also be used in cooling systems, that is to say wherever pressure fluctuations occurring in a liquid circulation system are to be compensated for by changes in volume of the circulation liquid.

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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)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Claims (11)

1. Dispositif compensateur d'expansion dans des circuits de liquide, notamment d'installations de chauffage ou de refroidissement, comportant au moins un vase d'expansion (4), de préférence en relation d'échange gazeux avec l'atmosphère, dans lequel est reçu du liquide provenant du circuit de liquide (1, 2, 3) par l'intermédiaire d'une conduite d'amenée (5), et à partir duquel du liquide est ramené dans le circuit de liquide (1, 2, 3) par l'intermédiaire d'une conduite d'évacuation (6) et d'une pompe refoulante, une soupape de décharge (7) réglable en fonction de la pression de régime dans l'installation étant prévue dans la conduite d'amenée (5) conduisant au vase d'expansion, et la pression régnant dans le vase d'expansion (4) étant inférieure à celle du circuit de liquide (1, 2, 3), caractérisé en ce que les conduites d'amenée et d'évacuation (5, 6) qui relient le vase d'expansion (4) au circuit de liquide (1, 2, 3) sont des conduites séparées qui débouchent à des endroits distincts dans la conduite montante (2) ou dans la conduite descendante (2′) du circuit liquide, et en ce qu'il est prévu, dans la conduite d'évacuation (6) sortant du vase d'expansion, une pompe refoulante et de circulation (9) fonctionnant de façon continue.
2. Dispositif selon la revendication 1, caractérisé en ce qu'il est prévu, au moins dans la conduite d'amenée (5) et également, de préférence, dans la conduite d'évacuation (6), une soupape conçue de préférence comme une électrovanne (11) commandée par un régulateur de niveau (13) du vase d'expansion (4).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'il est prévu, dans la conduite d'évacuation (6), une soupape de réglage de débit (10) disposée derrière la pompe refoulante et de circulation (9), dans le sens de l'écoulement.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en qu'il est prévu, dans la conduite d'évacuation (6), un débitmètre (24) disposé derrière la pompe de circulation (9), dans le sens de l'écoulement.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le vase d'expansion (4) possède, au niveau de l'orifice d'évacuation de gaz (15), un siphon (16) qui est rempli d'un liquide d'arrêt (17), par exemple d'huile.
6. Dispositif selon la revendication 5, caractérisé en ce que les deux branches tubulaires du siphon (16) possèdent des zones (16′) à section élargie.
7. Dispositif selon l'une des revendications 1 à 6, caractérisé par un dispositif de remplissage (19 à 23) commandé par un régulateur de niveau (12) disposé dans le vase d'expansion (4).
8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce qu'un ou plusieurs autres vases d'expansion (18) sont raccordés au vase d'expansion (4).
9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce qu'un courant partiel du liquide de l'installation passe par la conduite d'amenée (5), le vase d'expansion (4) et la conduite d'évacuation (6).
10. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que tout le courant du liquide de l'installation passe par la conduite d'amenée (5), le vase d'expansion (4) et la conduite d'évacuation (6).
11. Dispositif selon la revendication 10, caractérisé en ce que la pompe refoulante et de circulation (9) prévue dans la conduite d'évacuation (6) est en même temps la pompe de circulation de l'installation.
EP88903736A 1987-05-05 1988-05-04 Dispositif de transfert d'expansion dans des circuits de liquide, notamment d'installations de chauffage ou de refrigeration Expired - Lifetime EP0313599B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT1118/87 1987-05-05
AT111887 1987-05-05
AT140087 1987-06-02
AT1400/87 1987-06-02

Publications (2)

Publication Number Publication Date
EP0313599A1 EP0313599A1 (fr) 1989-05-03
EP0313599B1 true EP0313599B1 (fr) 1991-10-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88903736A Expired - Lifetime EP0313599B1 (fr) 1987-05-05 1988-05-04 Dispositif de transfert d'expansion dans des circuits de liquide, notamment d'installations de chauffage ou de refrigeration

Country Status (6)

Country Link
US (1) US5007583A (fr)
EP (1) EP0313599B1 (fr)
AT (1) ATE68868T1 (fr)
CA (1) CA1323546C (fr)
DE (1) DE3865805D1 (fr)
WO (1) WO1988008943A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015009696A1 (de) * 2015-07-30 2017-02-02 Aew Wassertechnologie Gmbh System und Verfahren zum Befüllen eines wasserführenden Kreislaufsystems

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YU128388A (en) * 1988-07-01 1990-04-30 Gavrilovic Prehrambena Ind Horisontal device for continual food sterilizing
AT399217B (de) * 1991-11-22 1995-04-25 Schwarz A & Co Vorrichtung zur expansionsübernahme in flüssigkeitskreislaufsystemen
AT400191B (de) * 1992-03-25 1995-10-25 Eder Anton Entgasungseinrichtung
NL9201883A (nl) * 1992-10-29 1994-05-16 Spiro Research Bv Werkwijze en inrichting voor het op een werkdruk houden van een vloeistof in een in hoofdzaak gesloten vloeistofcirculatiesysteem.
NL9301908A (nl) 1993-11-04 1995-06-01 Spiro Research Bv Werkwijze en inrichting voor het ontluchten van een vloeistof in een in hoofdzaak gesloten vloeistofcirculatiesysteem.
NL9400106A (nl) * 1994-01-24 1995-09-01 Cnossen Jan H Apparaat t.b.v. C.V.-installatie met expansievat, drukregeling, waterverliessuppletie, ontluchting, registratie en controle.
DE29510126U1 (de) * 1995-06-22 1995-10-12 Bernstein, Hans Friedrich, 82211 Herrsching Armaturen, insbesondere für den Ausdehnungs- und Entspannungsbehälter eines Flüssigkeitskreislaufsystems
US5671773A (en) * 1995-11-09 1997-09-30 Daewoo Electronics Co, Ltd. Automatic fluid-supply apparatus for a boiler system
NL1010047C2 (nl) * 1998-04-03 1999-10-05 Jan Henk Cnossen Microserver.
ES2146161B1 (es) * 1998-04-06 2000-12-16 Tecnologia Y Componentes S L Procedimiento y dispositivo para la regulacion del regimen pulsante en una columna de liquido de un circuito de transporte energetico mediante un fluido.
US6557774B1 (en) * 1999-10-12 2003-05-06 Gregory A. Krueger Non-pressurized space heating system and apparatus
EP1102012B1 (fr) 1999-11-17 2006-08-30 Anton Eder Installation de dégazage
US6739517B1 (en) 2001-10-15 2004-05-25 Gregory A. Krueger Non-circulating tank and kit for use with liquid heating unit
NL1020935C2 (nl) * 2002-06-25 2004-08-04 Jan Henk Cnossen Verwarming voor vloeistof.
DE10257309A1 (de) * 2002-11-30 2004-06-09 Gast, Karl Heinz, Dipl.-Ing. (FH) Verfahren und Einrichtungen zum Frostschutz in Heizungsanlagen
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FR2895915B1 (fr) * 2006-01-11 2009-02-06 Collard Et Trolart Thermique S Dispositif pour le degazage de l'eau avant son introduction dans un circuit et applications correspondantes.
NL1036252C2 (nl) * 2008-04-24 2010-05-31 Flamco Stag Gmbh Verwarmingssysteem met expansie-inrichting.
DE102012201645B4 (de) * 2012-02-03 2016-07-21 Air-Sep Vertriebs- Und Service Ag Ausdehnungs- und entgasungsvorrichtung zum anschluss an ein kreislaufsystem, insbesondere das kreislaufsystem einer gebäudeheizung
CN103278038A (zh) * 2013-05-16 2013-09-04 江苏昊隆换热器有限公司 一种新型板式换热器
MX2016013215A (es) * 2014-04-09 2017-05-03 Roots Sustainable Agricultural Tech Ltd Sistema y metodo de suministro de calor.
JP6655898B2 (ja) * 2015-01-20 2020-03-04 大阪瓦斯株式会社 排熱回収装置及び熱供給システム及び排熱回収装置の運転方法
JP2017067327A (ja) * 2015-09-29 2017-04-06 株式会社コロナ 温水暖房装置
GB2576427B (en) * 2019-07-19 2021-01-06 Derek Barrett Peter Closed-loop pipework system de-aeration apparatus
WO2021045620A1 (fr) * 2019-09-03 2021-03-11 Flamco B.V. Système de remplissage de liquide et procédé de remplissage associé
NL2025076B1 (en) * 2019-09-03 2021-04-13 Flamco Bv Liquid replenishing system and method of replenishing
CN112984593A (zh) * 2019-12-02 2021-06-18 徐兆良 一种全新的集中供暖和供冷方法
CN112503392A (zh) * 2020-10-23 2021-03-16 东方电气集团东方汽轮机有限公司 用于烟气余热发电的带自平衡稳压箱闭式循环水系统
CN112775684B (zh) * 2021-01-05 2022-03-15 江苏博尚工业装备有限公司 基于车削中心的自动化数控复合机床

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Publication number Priority date Publication date Assignee Title
DE102015009696A1 (de) * 2015-07-30 2017-02-02 Aew Wassertechnologie Gmbh System und Verfahren zum Befüllen eines wasserführenden Kreislaufsystems

Also Published As

Publication number Publication date
CA1323546C (fr) 1993-10-26
DE3865805D1 (de) 1991-11-28
WO1988008943A1 (fr) 1988-11-17
ATE68868T1 (de) 1991-11-15
EP0313599A1 (fr) 1989-05-03
US5007583A (en) 1991-04-16

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