EP2271970B1 - Dispositif hydraulique pour alimenter et commander un courant d'eau vers des utilisateurs - Google Patents

Dispositif hydraulique pour alimenter et commander un courant d'eau vers des utilisateurs 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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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.)
Not-in-force
Application number
EP08763837.5A
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German (de)
English (en)
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EP2271970A1 (fr
Inventor
Umberto Bertolotti
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IVAR SpA
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IVAR SpA
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Publication of EP2271970A1 publication Critical patent/EP2271970A1/fr
Application granted granted Critical
Publication of EP2271970B1 publication Critical patent/EP2271970B1/fr
Not-in-force 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
    • 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. Dispositif hydraulique (1) destiné à alimenter et à commander un courant de fluide vers un circuit d'utilisation, comprenant : une branche de distribution (2), pouvant être raccordée au dit circuit d'utilisation de manière à envoyer ledit courant au dit circuit d'utilisation, une branche de refoulement (3), pouvant être raccordée au dit circuit d'utilisateur de manière à recevoir ledit courant dudit circuit d'utilisateur, et pouvant être accouplée à un instrument de mesure (4) du débit instantané dudit courant dans ladite branche de refoulement (3), un premier chemin hydraulique (5) mettant ladite branche de distribution (2) en communication fluidique avec ladite branche de refoulement (3), un premier siège, placé sur la branche de distribution (2) d'une soupape d'arrêt (6), cette dernière pouvant fonctionner entre une première configuration de fonctionnement dans laquelle elle permet au courant de passer à travers la branche de distribution (2) de manière à atteindre ledit circuit d'utilisation, et une seconde configuration de fonctionnement dans laquelle elle dévie le courant de ladite branche de distribution (2) vers la branche de refoulement (3) à travers au moins une partie dudit premier chemin hydraulique (5), sans passer à travers ledit circuit d'utilisation, caractérisé en ce qu'un second siège, placé sur la branche de distribution (2) d'un premier robinet d'équilibrage (10), soit prévu, et qu'un troisième siège, placé sur le premier chemin hydraulique (5) d'un second robinet d'équilibrage (11), soit prévu, et en ce que ledit premier chemin hydraulique (5) se loge dans la branche de refoulement (3) dans une zone de raccordement (8) placée en amont par rapport à la direction d'écoulement (R) du courant dans la branche de refoulement, d'une partie (9) de ladite branche de refoulement (3) conçue pour être accouplée directement avec ledit instrument de mesure (4).
  2. Dispositif selon la revendication 1, caractérisé en ce qu'il comprend ledit instrument de mesure (4) accouplé directement avec ladite partie (9) de la branche de refoulement (3) en aval de la zone de raccordement (8) avec le premier chemin hydraulique (5), en tenant compte de la direction d'écoulement (R) du courant dans la branche de refoulement (3).
  3. Dispositif selon les revendications 1 ou 2, caractérisé en ce qu'il comprend un second chemin hydraulique (12) mettant ladite branche de distribution (2) en communication fluidique avec ladite branche de refoulement (3), dans lequel au moins une partie du second chemin hydraulique est séparée du premier chemin hydraulique (5) et dudit circuit des utilisateurs.
  4. Dispositif selon la revendication 3, caractérisé en ce que ledit second chemin hydraulique (12) raccorde la branche de distribution (2) à une zone (13) de la branche de refoulement (3) placée en aval, par rapport à la direction d'écoulement (R) du courant dans la branche de refoulement (3), de ladite partie (9) de la branche de refoulement (3).
  5. Dispositif selon la revendication 4, caractérisé en ce que ledit premier (5) et ledit second (12) chemin hydraulique se raccordent l'un à l'autre au moins au niveau d'une section de raccordement (7b) à côté de laquelle se trouve ledit troisième siège du second robinet d'équilibrage (11).
  6. Dispositif selon les revendications 3 ou 4 ou 5, caractérisé en ce qu'il comprend un conduit de raccordement (7) se développant de la branche de distribution (2) sur ledit premier siège de la soupape d'arrêt (6), dans lequel ledit conduit de raccordement (7) fait partie à la fois du premier (5) et du second (12) chemin hydraulique et dans lequel ledit troisième siège du second robinet d'équilibrage (11) se trouve au même niveau que ledit conduit de raccordement (7).
  7. Dispositif selon l'une des revendications de 3 à 6, caractérisé en ce que ledit second chemin hydraulique (12) est configuré de manière à reproduire une chute de pression correspondant à la chute de pression de la combinaison dudit premier chemin hydraulique (5) et dudit instrument de mesure (4) .
  8. Dispositif selon l'une quelconque des revendications de 3 à 7, caractérisé en ce que chacun desdits premier (5) et second (12) chemins hydrauliques possède un siège respectif d'un clapet de fermeture (15, 16) correspondant, associé à celui-ci le long de son développement.
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit second siège dudit robinet d'équilibrage (10) est placé en aval dudit premier siège de ladite soupape d'arrêt (6), par rapport à la direction d'écoulement (M) du courant dans la branche de distribution (2).
  10. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend au moins un premier (18a) et un second (18b) siège pour une sonde de température respective, le premier siège (18a) étant placé sur la branche de distribution (2) et le second siège (18b) étant positionné sur la branche de refoulement (3).
  11. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ladite branche de distribution (2), ledit premier siège de la soupape d'arrêt (6), ledit second siège dudit premier robinet d'équilibrage (10), ledit troisième siège dudit second robinet d'équilibrage (11) et au moins une partie dudit premier chemin hydraulique (5) sont réalisés en une seule pièce (30) .
  12. Procédé d'installation d'un dispositif destiné à alimenter et à commander un courant de fluide selon l'une ou plusieurs des revendications de 1 à 11, dans lequel le dispositif comprend ladite soupape d'arrêt (6), ledit premier robinet d'équilibrage (10), ledit second robinet d'équilibrage (11) et ledit instrument de mesure (4), incluant les étapes suivantes :
    - positionner la soupape d'arrêt (6) dans la première configuration de fonctionnement, de manière à ce que le courant passe à travers toute la branche de distribution (2) et atteigne le circuit d'utilisation et, une fois qu'il est passé à travers le circuit d'utilisation, revienne dans ladite branche de refoulement (3), dans lequel tout le courant de refoulement passe uniquement à travers la branche de refoulement (3), et
    - régler le premier robinet d'équilibrage (10) dans une position par laquelle ledit instrument de mesure (4) détecte un débit instantané correspondant à une première valeur de débit, caractérisé en ce qu'il comprend de plus les étapes suivantes :
    - positionner la soupape d'arrêt (6) dans la seconde configuration de fonctionnement, de manière à ce que le courant soit totalement dévié de la branche de distribution (2) et ne passe uniquement qu'à travers le premier chemin hydraulique (5) jusqu'à ce qu'il atteigne la branche de refoulement (3) ; et
    - régler le second robinet d'équilibrage (11) dans une position respective par laquelle ledit instrument de mesure (4) détecte un débit instantané correspondant à une seconde valeur de débit prédéfinie.
  13. Procédé selon la revendication 12, caractérisé en ce que lors de l'étape de réglage du premier robinet d'équilibrage (10), le premier chemin hydraulique (5) reste fermé au courant de refoulement, de sorte que le courant de refoulement provenant du circuit d'utilisation ne passe uniquement et totalement qu'à travers la branche de refoulement (3).
  14. Procédé selon les revendications 12 ou 13, caractérisé en ce que le dispositif comprend un second chemin hydraulique (5) mettant ladite branche de distribution (2) en communication fluidique avec ladite branche de refoulement (3), se logeant dans ladite branche de refoulement (3) dans une zone (13) de la branche de refoulement (3) située en aval par rapport à la direction d'écoulement (R) du courant dans la branche de refoulement (3) de ladite partie (9) de la branche de refoulement (3), et en ce que lors de l'étape de réglage du second robinet d'équilibrage (11) ledit second chemin hydraulique (12) est fermé au dit courant dévié de la branche de distribution (2), de sorte que ledit courant dévié ne s'écoule que dans le premier chemin hydraulique (5) .
  15. Procédé selon la revendication 14, caractérisé en ce qu'il comprend une étape suivante consistant à fermer le premier chemin hydraulique (5) et à ouvrir le second chemin hydraulique (12), de sorte que le courant ne s'écoule que dans le second chemin hydraulique (12) lorsque la soupape d'arrêt (6) se trouve dans la seconde configuration de fonctionnement.
EP08763837.5A 2008-04-23 2008-04-23 Dispositif hydraulique pour alimenter et commander un courant d'eau vers des utilisateurs Not-in-force EP2271970B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2008/000285 WO2009130724A1 (fr) 2008-04-23 2008-04-23 Dispositif hydraulique pour alimenter et commander un courant d'eau vers des utilisateurs

Publications (2)

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

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

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
CN100441961C (zh) * 2003-02-04 2008-12-10 I.V.A.R.股份公司 用于供热***的调节装置
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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EP2271970A1 (fr) 2011-01-12
CN102016739B (zh) 2013-04-24
WO2009130724A1 (fr) 2009-10-29
CN102016739A (zh) 2011-04-13

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