EP2271970B1 - Hydraulische anordnung zum leiten und steuern eines wasserstroms in richtung von benutzern - Google Patents

Hydraulische anordnung zum leiten und steuern eines wasserstroms in richtung von benutzern Download PDF

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Publication number
EP2271970B1
EP2271970B1 EP08763837.5A EP08763837A EP2271970B1 EP 2271970 B1 EP2271970 B1 EP 2271970B1 EP 08763837 A EP08763837 A EP 08763837A EP 2271970 B1 EP2271970 B1 EP 2271970B1
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EP
European Patent Office
Prior art keywords
branch
hydraulic path
stream
valve
seat
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Not-in-force
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EP08763837.5A
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English (en)
French (fr)
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EP2271970A1 (de
Inventor
Umberto Bertolotti
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IVAR SpA
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IVAR SpA
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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
    • 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
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • F24D19/1024—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves a multiple way valve

Definitions

  • the present invention relates to a hydraulic device for feeding and controlling a stream of fluid, typically water, towards one or more users.
  • the present invention relates to a multifunctional hydraulic device, apt to hydraulic balance and record heat consumed by the users.
  • the present invention applies to hydraulic systems installed in houses, offices or buildings in general.
  • a specific technique required by hydraulic systems in buildings involves a correct feeding and a balanced distribution or hot or cold water towards single users, without unbalances occurring in the circuit.
  • the term user refers to a closed hydraulic circuit, typically comprising heat exchanging elements (e.g. radiant panels and/or radiators) so as to enable heat exchange between the fluid and one or more elements connected to the user circuit, such as air of one or more rooms and/or sanitary water.
  • heat exchanging elements e.g. radiant panels and/or radiators
  • Known hydraulic devices comprise a delivery branch, generally provided with a three-way valve for adjusting by way of a command given by an ambient thermostat the flow rate towards the user, or better for allowing or preventing the passage of water towards the user, a return branch through which hot water gets back to the boiler, and a bypass duct connecting the delivery branch to the return branch, through which duct water not demanded by the user circulates, i.e. when the three-way valve is closed.
  • such devices further comprise balancing valves, apt to adjust the water flow rate both in the bypass circuit and in the main water circuit (i.e.
  • the device setting and system adjustment step is very laborious and requires the intervention of qualified and expert technicians and/or the use of expensive or complex instruments.
  • the flow rate in the bypass duct is set by placing the balancing valve of the bypass duct in the correct position as can be obtained by reading suitable tables and diagrams containing indexes corresponding to given flow rates or related pressure drops.
  • EP 1 772 677 A2 Relevant prior art is disclosed by EP 1 772 677 A2 .
  • a further aim of the present invention is to propose a hydraulic device for feeding and controlling a water stream towards users that is structurally simple and little bulky.
  • the technical task and the aims as described are achieved by a hydraulic device for feeding and controlling a water stream towards users comprising the technical characteristics listed in one or more of the appended claims.
  • the invention relates to a method according to any of the claims 12 to 15, characterized in that the device (1) comprises a shut valve (15) placed along said first hydraulic path (5) for opening or closing said first hydraulic path (5).
  • the invention relates to a method according to any of the claims 12 to 15 or to one of the two latter aspects above, characterized in that the device (1) comprises a first and a second temperature probe (18a, 18b) associated to the delivery branch (2) and to the return branch (3), respectively, and apt to cooperate with the measuring instrument (4) for detecting the caloric consumption of said user circuit.
  • the hydraulic device 1 comprises a delivery branch 2 through which water can be sent to the final user (not shown, but schematically connectable to the device on the right side of the figures), and a return branch 3 through which water gets back to the general system and/or to a boiler, not shown but schematically connectable to the device on the left side of the figures by way of suitable pipes.
  • the second balancing valve 11 is apt to adjust the flow rate of water flowing within a recirculation or bypass circuit, when the shut-off valve is in the OFF position.
  • said balancing valve 11 is a valve with manual adjustment.
  • the device 1 preferably comprises a second hydraulic path 12, which connects the delivery branch 2 and the return branch 3.
  • the second hydraulic path 12 extends from the delivery branch 2 and fits into the return branch 3, in a connection area 13 of the return branch 3 placed downstream, considering the flowing direction R of the return water stream, from the portion 9 configured so as to be coupled directly with the measuring instrument 4, so that the latter lies between the connection area 8 with the first hydraulic path and the connection area 13 with the second hydraulic path.
  • the first 5 and the second 12 hydraulic path preferably coincide at least on a passage gap between the delivery branch 2 and the two hydraulic paths. More preferably, they coincide at least on the connection duct 7 and separate from each other downstream (following the flowing direction of the fluid in the bypass) from the seat of the balancing valve 11, e.g. directly downstream from the outlet section 7b of the connection duct 7.
  • the first hydraulic path 5 is preferably a setting circuit for the device 1.
  • the second hydraulic path 12 is preferably a water recirculation or bypass circuit, which is active when no water supply to the user is demanded. Water flows through the first and/or the second path when the shut-off valve 6 is in OFF position and the shutter 6a closes completely the passage gap between the initial portion 2c and the end portion 2d of the delivery branch 2, though leaving the connection gap between the initial portion 2c of the delivery branch 2 and the connection duct 7 open. Water is thus deviated towards the first 5 and/or the second 12 hydraulic path.
  • the device 1 preferably comprises a shut valve 16 associated to the second hydraulic path 12, e.g. a ball valve.
  • the shut valve 16 preferably comprises a shutter 16a, shutter adjustment members (typically of manual type) and a suitable seat placed on the second hydraulic path 12 for the remaining components of the valve itself.
  • the seat of the shutter of the shut valve 16 is placed on the second hydraulic path 12 so as to open or close the duct.
  • the device 1 further comprises at least two seats 18 for temperature probes 18a and 18b, a first seat being located on the delivery branch for a first probe 18a and a second seat on the return branch for a second probe 18b.
  • the seat for the first probe 18a is placed upstream from the seat of the shut-off valve 6, considering the flowing direction M of the delivery stream.
  • the seat for the second probe 18b is located downstream form the measuring instrument 4, considering the flowing direction R of the return water stream.
  • the device 1 also comprises said temperature probes 18a and 18b.
  • the temperature values detected by the probes 18a and 18b are used to detect the temperature difference between delivery stream and return stream, thus obtaining, crossing these values with the instantaneous flow rate values obtained from the measuring instrument 4, the caloric consumption of the system.
  • the device 1 comprises at least one seat for a non-return valve 19 placed on the delivery branch 2, preferably downstream from the seats of the shut-off valve 6 and of the first balancing valve 10 with respect to the flowing direction (M) of the fluid stream in the delivery branch 2, e.g. on the outlet section 2b of said branch.
  • the device 1 also comprises said non-return valve 19.
  • the device 1 also comprises said filter 20.
  • At least the delivery branch 2, the seat of the shut-off valve 6, the seat of the first balancing valve 10, the seat of the second balancing valve 11 and at least one portion of the first hydraulic path 5 are obtained as one piece 30, preferably of melted metal.
  • the first seat for the first temperature probe 18a and/or the seat for the non-return valve 19 are obtained from said body 30.
  • at least the connection duct 7 and/or a portion of the second hydraulic path 12 are also obtained from said piece 30.
  • At least one portion (or the whole) of the shutter 6a of the shut-off valve and/or of the shutter 11 a of the second balancing valve 11 and/or of the shutter 10a of the first balancing valve 10 and/or of the first probe 18a and/or of the non-return valve 19 are housed in said body 30.
  • the device should be set and the balancing valves 10 and 11 should be adjusted so as to balance the whole system and always ensure a correct supply of water stream.
  • the primary circuit has to be balanced, i.e. the one including the delivery branch, the user and the return branch and which is active during the normal operation of the heating system of the single user.
  • the flow rate of water getting through the delivery branch 2, the use and the return branch 3 has to be adjusted.
  • the whole return stream has to be let through only the whole return branch, e.g. without dispersing towards the first hydraulic path 5.
  • the first hydraulic path 5 has to be closed for the return stream, e.g. by closing at least the ball valve 15.
  • the respective ball valve 16 can be closed, as an alternative ( Figure 1 ) or integration to closing the valve 15, still with the aim of closing the first hydraulic path 5 to the return stream.
  • closing at least one of the ball valves 15 and 16 the hydraulic path made up of the separate portions of the hydraulic paths 5 and 12 is bypassed for the return stream, so as to ensure that the return water stream only gets through the return branch 3.
  • the primary circuit can now be balanced by acting upon the first balancing valve 10, either opening or closing it (varying the position of the shutter 10a and therefore varying the flow rate of the stream getting through the primary circuit) up to a position in which the maximum flow rate allowed for that specific system or the maximum flow rate desired for that specific user can be read on the measuring instrument 4, which in this step acts as instantaneous flow meter.
  • the first balancing valve 10 is blocked in said position, e.g. by lead sealing.
  • said measuring instrument 4 act as instantaneous flow meter, similarly to the previous explanation.
  • the position of the shutter 11a is adjusted and therefore the flow rate getting through the recirculation or bypass circuit is varied, up to a position in which an instantaneous flow rate of recirculation water corresponding to a second predefined value can be read on the measuring instrument 4.
  • the balancing valve 11 is adjusted, it is now preferable to block it, e.g. by lead sealing, so as to prevent unintentional and/or unwanted shifts of the latter from its optimal operating position.
  • the device 1, and therefore the system, are now ready for correct operation.
  • the ball valve 15 of the first hydraulic path 5 is closed, which path can also be no longer used from now on if also the second hydraulic path 12 is present.
  • the ball valve 16 of the second hydraulic path 12 is preferably opened. It is also preferable to block by lead sealing the ball valve 15 and/or the ball valve 16 so as to prevent tamperings with the device.
  • the first hydraulic path 5 is only a setting circuit
  • the second hydraulic path 12 is the normal recirculation or bypass circuit.
  • shut-off valve 6 During normal operation, in order to supply water to the users the shut-off valve 6 has to be opened (ON position) so as to bypass the second hydraulic path 12, i.e. the recirculation path. Conversely, when water supply is no longer necessary, the shut-off valve 6 is switched to the closing or OFF position ( Figure 2 ) and the water stream flows through the second hydraulic path 12, getting into the outlet section 3b of the delivery branch 3, thus bypassing the user and preferably also the measuring instrument 4.
  • the measuring instrument 4 records a water stream, but to such stream is associated a temperature difference (between the positions 18a and 18b) that is practically of no value, and therefore no energy consumption.
  • the invention achieves the designed aims as well as important advantages.
  • the installation of the device according to the present invention and the setting thereof can also be executed by generic technicians, without the need for a deep technical basic knowledge, aimed above all at reading and interpreting diagrams.
  • the device is structurally simple, light and little bulky, also thanks to the integration of the flow meter and of the heat recorder into one measuring instrument that can be coupled on the return branch. Finally, the device is cheap as far as manufacturing and installation are concerned.

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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)
  • Flow Control (AREA)
  • Check Valves (AREA)

Claims (15)

  1. Hydraulikvorrichtung (1) zur Zuführung und Steuerung eines Fluidstroms zu einem Verwendungskreislauf, umfassend einen Einspeisungsabschnitt (2), ausgelegt, um mit dem Verwendungskreislauf verbunden zu werden, um den Strom zum Verwendungskreislauf zu senden, einen Rücklaufabschnitt (3), ausgelegt, um mit dem Verwendungskreislauf verbunden zu werden, um den Strom vom Verwendungskreislauf zu erhalten, und ausgelegt, um mit einem Messinstrument (4) für die Momentandurchflussmenge des Stroms im Rücklaufabschnitt (3) gekoppelt zu werden, einen ersten Hydraulikweg (5), der den Einspeisungsabschnitt (2) mit dem Rücklaufabschnitt (3) in Fluidkommunikation bringt, einen ersten Sitz, platziert am Einspeisungsabschnitt (2), eines Absperrventils (6), wobei Letzteres zwischen einer ersten Betriebskonfiguration, in der es dem Strom erlaubt, durch den Einspeisungsabschnitt (2) zu strömen, um den Verwendungsabschnitt zu erreichen, und einer zweiten Betriebskonfiguration, in der es den Strom vom Einspeisungsabschnitt (2) zum Rücklaufabschnitt (3) durch mindestens ein Teilstück des ersten Hydraulikwegs (5) ableitet, ohne durch den Verwendungsabschnitt zu strömen, betätigt werden kann, dadurch gekennzeichnet, dass ein zweiter Sitz eines ersten Ausgleichsventils (10) am Einspeisungsabschnitt (2) platziert bereitgestellt ist, und ein dritter Sitz eines zweiten Ausgleichsventils (11) am ersten Hydraulikweg (5) platziert bereitgestellt ist, und dass der erste Hydraulikweg (5) in den Rücklaufabschnitt (3) in einem Verbindungsbereich (8) eingepasst ist, der sich stromabwärts zur Strömungsrichtung (R) des Stroms im Rücklaufabschnitt befindet, von einem Teilstück (9) des Rücklaufabschnitts (3), das unmittelbar mit dem Messinstrument (4) gekoppelt werden soll.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie das Messinstrument (4) umfasst, das direkt mit dem Teilstück (9) des Rücklaufabschnitts (3) stromabwärts des Verbindungsbereichs (8) mit dem ersten Hydraulikweg (5) gekoppelt ist, und zwar unter Berücksichtigung der Strömungsrichtung (R) des Stroms im Rücklaufabschnitt (3).
  3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie einen zweiten Hydraulikweg (12) umfasst, der den Einspeisungsabschnitt (2) mit dem Rücklaufabschnitt (3) in Fluidkommunikation setzt, wobei mindestens ein Teilstück des zweiten Hydraulikwegs vom ersten Hydraulikweg (5) und vom Verwendungskreislauf getrennt ist.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der zweite Hydraulikweg (12) den Einspeisungsabschnitt (2) mit einem Bereich (13) des Rücklaufabschnitts (3) verbindet, der stromabwärts zur Strömungsrichtung (R) des Stroms im Rücklaufabschnitt (3) angeordnet ist, vom Teilstück (9) des Rücklaufabschnitts (3).
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der erste (5) und der zweite (12) Hydraulikweg miteinander mindestens in einer Verbindungssektion (7b) verbunden sind, an der sich der dritte Sitz des zweiten Ausgleichsventils (11) befindet.
  6. Vorrichtung nach Anspruch 3 oder 4 oder 5, dadurch gekennzeichnet, dass sie eine Verbindungsleitung (7) umfasst, die sich vom Einspeisungsabschnitt (2) am ersten Sitz des Absperrventils (6) erstreckt, wobei diese Verbindungsleitung (7) sowohl ein Teil des ersten (5) als auch des zweiten (12) Hydraulikwegs ist und wobei der dritte Sitz des zweiten Ausgleichsventils (11) auf einer Ebene mit der Verbindungsleitung (7) liegt.
  7. Vorrichtung nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass der zweite Hydraulikweg (12) ausgebildet ist, um einen Druckverlust zu reproduzieren, entsprechend dem Druckverlust der Kombination des ersten Hydraulikwegs (5) und des Messinstruments (4).
  8. Vorrichtung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, dass sowohl der erste (5) als auch der zweite (12) Hydraulikweg einen jeweiligen Sitz eines jeweiligen Absperrventils (15, 16) aufweisen, assoziiert damit entlang dessen Entwicklung.
  9. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der zweite Sitz des ersten Ausgleichsventils (10) stromaufwärts des ersten Sitzes des Absperrventils (6) zur Strömungsrichtung (M) des Stroms im Einspeisungsabschnitt (2) platziert ist.
  10. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie mindestens einen ersten (18a) und einen zweiten (18b) Sitz für einen jeweiligen Temperaturfühler umfasst, wobei der erste Sitz (18a) am Einspeisungsabschnitt (2) platziert ist und der zweite Sitz (18b) am Rücklaufabschnitt (3) platziert ist.
  11. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Einspeisungsabschnitt (2), der erste Sitz des Absperrventils (6), der zweite Sitz des ersten Ausgleichsventils (10), der dritte Sitz des zweiten Ausgleichsventils (11) und mindestens ein Teilstück des ersten Hydraulikwegs (5) als nur ein Stück (30) erhalten werden.
  12. Verfahren zum Einstellen einer Vorrichtung zur Zuführung und Steuerung eines Fluidstroms nach einem oder mehreren der Ansprüche 1 bis 11, wobei die Vorrichtung das Absperrventil (6), das erste Ausgleichsventil (10), das zweite Ausgleichsventil (11) und das Messinstrument (4) umfasst, einschließend folgende Schritte:
    - Positionieren des Absperrventils (6) in der ersten Betriebskonfiguration, sodass der Strom durch den gesamten Einspeisungsabschnitt (2) strömt und den Verwendungskreislauf erreicht und nach dem Strömen durch den Verwendungskreislauf zurück in den Rücklaufabschnitt (3) strömt, wobei der gesamte Rückstrom nur durch den Rücklaufabschnitt (3) strömt, und
    - Justieren des ersten Ausgleichsventils (10) in einer Position, anhand derer das Messinstrument (4) eine Momentandurchflussmenge erfasst, entsprechend einem ersten vorgegebenen Durchflussmengenwert, dadurch gekennzeichnet, dass es zudem die folgenden Schritte umfasst:
    - Positionieren des Absperrventils (6) in der zweiten Betriebskonfiguration, sodass der Strom in vollem Umfang vom Einspeisungsabschnitt (2) abgeleitet wird und nur durch den ersten Hydraulikweg (5) strömt, bis er den Rücklaufabschnitt (3) erreicht, und
    - Justieren des zweiten Ausgleichsventils (11) in einer jeweiligen Position, anhand derer das Messinstrument (4) eine Momentandurchflussmenge erfasst, entsprechend einem zweiten vorgegebenen Durchflussmengenwert.
  13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, dass der erste Hydraulikweg (5) während des Schritts zum Justieren des ersten Ausgleichsventils (10) für den Rücklaufstrom geschlossen gehalten wird, sodass der Rücklaufstrom vom Verwendungskreislauf in vollem Umfang durch den Rücklaufabschnitt (3) strömt.
  14. Verfahren nach Anspruch 12 oder 13, dadurch gekennzeichnet, dass die Vorrichtung einen zweiten Hydraulikweg (5) umfasst, der den Einspeisungsabschnitt (2) mit dem Rücklaufabschnitt (3) in Fluidkommunikation setzt und in den Rücklaufabschnitt (3) in einem Bereich (13) des Rücklaufabschnitts (3) eingepasst ist, der sich stromabwärts zur Strömungsrichtung (R) des Stroms im Rücklaufabschnitt (3) des Teilstücks (9) des Rücklaufabschnitts (3) befindet, und dadurch, dass während des Schritts zum Justieren des zweiten Ausgleichsventils (11) der zweite Hydraulikweg (12) für den vom Einspeisungsabschnitt (2) abgeleiteten Strom geschlossen ist, sodass der abgeleitete Strom nur im ersten Hydraulikweg (5) strömt.
  15. Verfahren nach Anspruch 14, dadurch gekennzeichnet, dass es die nächsten Schritte des Schließens des ersten Hydraulikwegs (5) und des Öffnens des zweiten Hydraulikwegs (12) umfasst, sodass der Strom nur im zweiten Hydraulikweg (12) strömt, wenn sich das Absperrventil (6) in der zweiten Betriebskonfiguration befindet.
EP08763837.5A 2008-04-23 2008-04-23 Hydraulische anordnung zum leiten und steuern eines wasserstroms in richtung von benutzern Not-in-force EP2271970B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000285 WO2009130724A1 (en) 2008-04-23 2008-04-23 Hydraulic device for feeding and controlling a water stream towards users

Publications (2)

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EP2271970A1 EP2271970A1 (de) 2011-01-12
EP2271970B1 true EP2271970B1 (de) 2015-08-12

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EP (1) EP2271970B1 (de)
CN (1) CN102016739B (de)
WO (1) WO2009130724A1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2724160B1 (fr) * 1994-09-07 1997-01-17 Comap Installation de distribution d'un fluide circulant en circuit ferme, a regulation, et procede de reglage de cette installation
US5904292A (en) * 1996-12-04 1999-05-18 Mcintosh; Douglas S. Modulating fluid control device
WO2004070280A1 (en) * 2003-02-04 2004-08-19 I.V.A.R. S.P.A. Heating plant control device
ITMI20051886A1 (it) * 2005-10-07 2007-04-08 Watts Cazzaniga S P A Corpo monoblocco e relativa valvola multifunzionale per l'alimentazione e il controllo di pannelli radianti
DE102006010562A1 (de) * 2006-03-06 2007-09-13 Wilo Ag Vorrichtung zum Verteilen und Regeln eines von einer Heiz- und/oder Kühlquelle stammenden Wärmeträgers

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CN102016739A (zh) 2011-04-13
CN102016739B (zh) 2013-04-24
EP2271970A1 (de) 2011-01-12
WO2009130724A1 (en) 2009-10-29

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