EP2271970A1 - Hydraulic device for feeding and controlling a water stream towards users - Google Patents
Hydraulic device for feeding and controlling a water stream towards usersInfo
- Publication number
- EP2271970A1 EP2271970A1 EP08763837A EP08763837A EP2271970A1 EP 2271970 A1 EP2271970 A1 EP 2271970A1 EP 08763837 A EP08763837 A EP 08763837A EP 08763837 A EP08763837 A EP 08763837A EP 2271970 A1 EP2271970 A1 EP 2271970A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- branch
- hydraulic path
- stream
- valve
- return
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 46
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims abstract description 5
- 239000000523 sample Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 235000019577 caloric intake Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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 al- lowing 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 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.
- the technical task of the present invention is to propose a hydraulic device for feeding and controlling a water stream towards users that is free from the drawbacks mentioned above,
- an aim of the present invention is to propose a hydraulic device for feeding and controlling a water stream towards users that enables a fast and easy installation, without using auxiliary instruments or diagrams.
- 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.
- 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. Further characteristics and advantages of the present invention will be more evident from the indicative, and therefore non-limiting, description of a preferred but not exclusive embodiment of a hydraulic device for feeding and controlling a water stream towards users, as shown in the accompanying drawings, in which: - Figure 1 shows a section of a hydraulic device for feeding and controlling a water stream towards users according to the present invention, in a first operating configuration of normal use;
- FIG. 2 shows a section of a hydraulic device according to the present invention, in a second operating configuration of normal use
- FIG. 3 shows a section of a hydraulic device according to the present invention, in an operating configuration of setting.
- the numeral 1 globally refers to a hydraulic device according to the present invention.
- the hydraulic device 1 preferably flows hot and/or cold water, apt to supply a final user, e.g. a closed hydraulic circuit in a flat of a block of flats, with heating or sanitary water.
- 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.
- Both the delivery branch 2 and the return branch 3 have each a corresponding inlet section 2a, 3a and a corresponding outlet section 2b, 3b.
- the inlet section 2a of the delivery branch 2 is connectable to a pipe coming from the general system (typically the general system of the building, including the boiler), whereas the inlet section 3a of the return branch 3 is connectable to a pipe coming from the user.
- the outlet section 2b of the return branch 2 is connectable to a pipe directed to the user, whereas the outlet section 3b of the return branch 3 is connectabie to a pipe directed to the general system or to the boiler,
- the return branch 3 can be advantageously coupled with a measuring instrument 4, apt to measure the instantaneous flow rate and/or the user's calorie consumption.
- the device 1 also comprises said measuring instrument 4, by which both the instantaneous flow rate getting through the return branch 3 can be quantified and the calorie energy consumption can be recorded.
- the device 1 further comprises at least one first hydraulic path 5 putting the delivery branch 2 in fluid communication with the return branch 3.
- the device 1 comprises a shut-off valve 6 associated to the delivery branch 2.
- the shut-off valve 6 can be operated between a first operating configuration for opening the delivery branch 2, in which the whole water stream getting into the section 2a gets through the whole delivery branch 2 and gets out from the section 2b reaching the final user, and a second operating configuration for closing the delivery branch 2, in which the water stream getting into the section 2a is diverted from the delivery branch 2 towards the return branch 3, without getting through the final use.
- the first operating opening configuration will be explicitly referred to as "ON" position and the second operating closing configuration will be referred to as "OFF" position.
- the shut-off valve 6 preferably comprises a shutter 6a, shutter adjustment members and a suitable seat ⁇ placed on the delivery branch 2 for the components of the valve itself.
- the term 'valve seat' generally refers to the parts of the device 1 shaped so as to house and/or cooperate with the remaining components of the valve itself.
- the shutter 6a is movable (parallel to its longitudinal development) between two positions corresponding to the first and second operating configurations above, respectively.
- the shutter has two seals, preferably O-rings, with a circumferential development and longitudinally spaced apart, which are apt to engage a respective gap on the delivery branch 2 and to ensure the tightness of the shutter 6a in the respective ' gaps. In the OFF position (Figs.
- the shutter engages a gap corresponding to a cross section of the delivery branch 2, so as to close said delivery branch 2. Simultaneously, the shutter releases a second gap corresponding to a cross section of the first hydraulic path 5, which extends laterally from the delivery branch 2. In the ON position (Fig. 1), the shutter operates conversely.
- said shut-off valve 6 is a motorized, preferably three-way, zone valve, and although it can also take intermediate positions between ON and OFF positions, it is advantageously operated only between the two extreme operating configurations mentioned above.
- the shut-off valve 6 is preferably placed between the inlet section 2a and the outlet section 2b, thus dividing the delivery branch 2 into an initial portion 2c and an end portion 2d,
- connection duct 7 included within the first hydraulic path 5
- the device 1 further comprises at least one first balancing valve 10 placed on the delivery branch 2, preferably between the inlet section 2a and the outlet section 2b.
- Said valve 10 whose use will be explained in the following, is apt to balance the flow rate in the primary circuit, i.e. in the circuit comprising the delivery branch 2, the use and the return branch 3.
- the balancing valve 10 preferably comprises a shutter 10a, shutter adjustment members (typically of manual type) and a suitable seat placed on the delivery branch 2 for the remaining components of the valve itself.
- said seat of the balancing valve 10 of the primary circuit is placed downstream from the seat of the shut-off vaive 6, considering the feeding direction M of the delivery water stream.
- the device 1 preferably also comprises a second balancing valve 11 , associated to the first hydraulic path 5.
- the balancing valve 11 preferably comprises a shutter 11a, shutter adjustment members (typically of manual type) and a suitable seat placed on the first hydraulic path 5 for the remaining components of the valve itself.
- the seat of the shutter of the balancing valve 11 is placed on the connection duct 7, e.g.
- the second balancing valve 11 is apt to adjust the flow rate of water flowing within a recirculation or by- pass circuit, when the shut-off valve is in the OFF position,
- said balancing valve 11 is a valve with manual adjustment.
- the shutter 11a is movable so as to get near and away from the outlet section 7b of the duct 7, so as to control the flow rate of fluid in said duct 7.
- the shutter 11a has on its circumference a seal, preferably an O-ring. Also the use of this second balancing valve 11 will be explained in detail in the following.
- the device 1 preferably comprises a shut valve 15 associated to the first hydraulic path 5, e.g. a ball valve.
- the shut valve 15 preferably comprises a shutter 15a, shutter adjustment members (typically of manual type) and a suitable seat placed on the first hydraulic path 5 for the remaining components of the valve itself.
- the seat of the shutter of the shut valve 15 is placed on the first hydraulic path 5 so as to open or close the duct.
- 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 second hydraulic path 12 preferably comprises, along its. development, a throttling 17. The latter is configured so as to reproduce the same pressure drop (Kv) as the measuring instrument 4,
- 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 5 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 balanc-5 ing 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 valveQ 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.Q
- the flow rate of water getting through the delivery branch 2, the use and the return branch 3 has to be adjusted.
- the shut-off valve 6 has to be opened, i.e. placed on ON, so that the connection duct 7 is closed and the delivery stream flows only through the whole delivery branch 2.
- the shutter 6a of the shut-off valve 6 closes the inlet to the first hydraulic path 5 (connection duct 7).
- water gets back to the return branch 3.
- 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.
- Figure 1 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.
- the recirculation or bypass circuit After balancing the primary circuit, the recirculation or bypass circuit has to be balanced.
- the recirculation or bypass circuit is simulated by the first hydraulic path 5, Conversely, during the normal use of the device, the real recirculation or bypass cir- cuit is represented by the second hydraulic path 12.
- the first hydraulic path 5 acts both as setting circuit and as recirculation circuit in two separate steps.
- the shut-off valve 6 is closed, i.e. placed on OFF.
- the shutter 6a bypasses the end portion 2d of the delivery branch 2.
- the ball valve 16 of the second hydraulic path 12 is closed and the ball valve 15 of the first hydraulic path 5 is opened.
- said measuring instrument 4 act as instantaneous flow meter, similarly to the previous expla- nation.
- 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.
- Said value can be advantageously the maximum flow rate allowed for that specific system or the maximum flow rate desired for that specific user, as in the previous balancing operation, or it can be a higher or lower value, e.g. 60% of said maximum value.
- the balancing valve 11 is adjusted, it is now preferable to block it, e.g. by lead sealing, so as to pre- vent 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. Since recirculation water, returning to the boiler, does not get through the measuring instrument 4, the water stream does not undergo any pressure drop (Kv) 1 which would occur if it got through the measuring in- strument 4, and therefore the same pressure drop has preferably to be recreated by means of said throttling 17.
- Kv pressure drop
- 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 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.
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)
- Flow Control (AREA)
- Check Valves (AREA)
Abstract
Description
Claims
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)
Publication Number | Publication Date |
---|---|
EP2271970A1 true EP2271970A1 (en) | 2011-01-12 |
EP2271970B1 EP2271970B1 (en) | 2015-08-12 |
Family
ID=40386432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08763837.5A Not-in-force EP2271970B1 (en) | 2008-04-23 | 2008-04-23 | Hydraulic device for feeding and controlling a water stream towards users |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2271970B1 (en) |
CN (1) | CN102016739B (en) |
WO (1) | WO2009130724A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2724160B1 (en) * | 1994-09-07 | 1997-01-17 | Comap | INSTALLATION FOR DISTRIBUTING A FLUID CIRCULATING IN A CLOSED CIRCUIT, WITH REGULATION, AND METHOD FOR ADJUSTING THE SAME |
US5904292A (en) * | 1996-12-04 | 1999-05-18 | Mcintosh; Douglas S. | Modulating fluid control device |
CN100441961C (en) * | 2003-02-04 | 2008-12-10 | I.V.A.R.股份公司 | Heating plant control device |
ITMI20051886A1 (en) * | 2005-10-07 | 2007-04-08 | Watts Cazzaniga S P A | MONOBLOC AND RELATIVE BODY MULTIFUNCTIONAL VALVE FOR THE SUPPLY AND CONTROL OF RADIANT PANELS |
DE102006010562A1 (en) * | 2006-03-06 | 2007-09-13 | Wilo Ag | Device for distributing and controlling a heat carrier originating from a heating and / or cooling source |
-
2008
- 2008-04-23 WO PCT/IT2008/000285 patent/WO2009130724A1/en active Application Filing
- 2008-04-23 EP EP08763837.5A patent/EP2271970B1/en not_active Not-in-force
- 2008-04-23 CN CN2008801283246A patent/CN102016739B/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2009130724A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2271970B1 (en) | 2015-08-12 |
CN102016739B (en) | 2013-04-24 |
WO2009130724A1 (en) | 2009-10-29 |
CN102016739A (en) | 2011-04-13 |
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