EP0568122A2 - Ventilanordnung für Anlagen, die sowohl für Heizungs- als auch für Haushaltsheisswasser vorgesehen ist - Google Patents

Ventilanordnung für Anlagen, die sowohl für Heizungs- als auch für Haushaltsheisswasser vorgesehen ist Download PDF

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Publication number
EP0568122A2
EP0568122A2 EP93200629A EP93200629A EP0568122A2 EP 0568122 A2 EP0568122 A2 EP 0568122A2 EP 93200629 A EP93200629 A EP 93200629A EP 93200629 A EP93200629 A EP 93200629A EP 0568122 A2 EP0568122 A2 EP 0568122A2
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EP
European Patent Office
Prior art keywords
valve
water
pipe fitting
heat exchanger
valve assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP93200629A
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English (en)
French (fr)
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EP0568122A3 (de
EP0568122B1 (de
Inventor
Giuseppe Fugazza
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FUGAS Srl
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FUGAS Srl
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Publication date
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Application filed by FUGAS Srl filed Critical FUGAS Srl
Publication of EP0568122A2 publication Critical patent/EP0568122A2/de
Publication of EP0568122A3 publication Critical patent/EP0568122A3/xx
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Publication of EP0568122B1 publication Critical patent/EP0568122B1/de
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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F24H9/142—Connecting hydraulic components
    • F24H9/144—Valve seats, piping and heat exchanger connections integrated into a one-piece hydraulic unit
    • 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
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • 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
    • F24D3/1083—Filling valves or arrangements for filling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/133—Storage heaters
    • F24H9/136—Arrangement of inlet valves used therewith

Definitions

  • the present invention concerns a valve assembly adapted for being used in combined plants for providing both heating and sanitary hot water, i.e. residential plants wherein the same heat source, particularly a wall gas-fired boiler, is used for heating both the water for the heat radiating elements (radiators) for heating the rooms, and the sanitary or domestic hot water for various purposes.
  • the same heat source particularly a wall gas-fired boiler
  • the object of the present invention is that of overcoming the above mentioned shortcomings and limitations and more precisely of providing a valve arrangement or assembly for realizing plants of the above mentioned type, which is extremely compact, easy to be connected to the remaining of the plant, that allows an easy and simplified maintenance, and has quite limited costs, both for its construction and installation.
  • valve assembly for combined plants adapted for providing both heating and sanitary hot water and comprising a gas-fired boiler, a main heat exchanger, a water/water heat exchanger that can be included in the circuit of the heating water by means of a three-way valve, at least one radiator, and a pump for circulating the heating water
  • said valve assembly comprises two sub-assemblies or valve units, the first unit comprising an integral metal block in which there are formed or mounted said three-way valve, a pipe fitting for the connection with said main heat exchanger, a pipe fitting for the connection with said at least one radiator, a pipe fitting for the outlet of the domestic hot water, two pipe fittings for the connection with said water/water heat exchanger, said integral metal block further housing a pressure switch and a by-pass valve with an associated outlet fitting; said second unit comprising an integral metal block in which there are formed or mounted a pressure difference device, a pipe fitting for the connection with said at least one radiator, a pipe fitting for the
  • the assembly according to the invention has a reduced size and provides for original solutions. More particularly it is equipped with an advantageous device exploiting the pressure difference for controlling a three-way valve in lieu of the known arrangements, e. g. provided with a Venturi tube. Such novel pressure difference device can further include a flow rate regulator, if necessary and without any modification thereof.
  • the assembly of the invention incorporates a pressure switch, a by-pass valve and a number of pipe fittings and sections already designed for accomplishing functions of the system so that the installation of this latter is very simple and advantageous.
  • Fig. 1 is a diagram illustrating the construction of the valve assembly according to the invention in a residential heating plant also capable of producing domestic hot water, i. e. a plant capable of heating water circulating in a closed circuit which includes heat radiating elements, and of supplying upon request domestic hot water for various uses, by employing the same heat source, more particularly a gas-fired boiler.
  • domestic hot water i. e. a plant capable of heating water circulating in a closed circuit which includes heat radiating elements, and of supplying upon request domestic hot water for various uses, by employing the same heat source, more particularly a gas-fired boiler.
  • Specific and/or preferred embodiments of the assembly and of the components thereof are shown in Fig.s 2 to 4 and 5 to 12, respectively.
  • the gas-fired boiler 1 heats the water circulated within a heating circuit by a pump P.
  • the heated water passes through a three-way valve 4 which usually delivers the water to the radiators or radiating elements schematically represented by one element R, through the heating delivery pipe 5 and returns via the return pipe 6 to the pump P.
  • the three-way valve 4 closes the passage 5 to the radiators and supplies the hot water to a second water/water heat exchanger 17 (e.g. of the plate type) where the domestic hot water from the pipe 8 (that is from the water system) and which is delivered through the output pipe 9 to the taps for erogating the hot water, one of them being schematically indicated by RE in the Figure.
  • a second water/water heat exchanger 17 e.g. of the plate type
  • valve assembly according to the invention is shown in Fig.s 2 to 4 and substantially comprises two sub-assemblies or valve units made up as two blocks I and II.
  • block I or delivery distributor is illustrated in details in Fig.s 5 to 8.
  • the first unit I comprises a three-way valve 4, a spigot or pipe fitting 3 for the connection with the main heat exchanger 2, a spigot or pipe fitting 5 for the connection with the radiator R, an input spigot or pipe fitting 9 for the sanitary water, and two spigots or pipe fittings 22, 23 connecting the unit with said water/water heat exchanger 17.
  • the fitting 5 and other minor components of the group could be inserted into this latter instead of being formed in the block I.
  • the three-way valve 4 in the left part of unit I is actuated by a diaphragm valve 12 which is fitted into a properly threaded seat 38 of the unit. It comprises a housing 120 within which a diaphragm 121 is movable with an associated pushing head or pan 122 which drives a rod 123 which in turn is connected to the stem of the valve 4.
  • a diaphragm 121 is movable with an associated pushing head or pan 122 which drives a rod 123 which in turn is connected to the stem of the valve 4.
  • Such valve 4 in turn houses two valve bodies 42 and 43 axially urged by a return spring 44 in the housing 40 of the valve 4.
  • the inner space of the control valve 12 is divided into two chambers, each provided with a supply duct 124 and 125, respectively for low and high pressure, the further connections of which will be illustrated later on with reference to pressure difference device 14.
  • a further return spring 126 is preloaded in such a manner as to overcome the force of the spring 44 in the three-way valve.
  • An axially located rod or spindle 127 is connected at one end with the pan 122 while its other end protrudes upwards from the valve housing for actuating a microswitch 128 enabling the start of the pump P upon a request of domestic hot water in periods when the boiler is not burning.
  • the ignition of the burner is caused by a second microswitch 155 actuated by a pressure switch 15 as described later on.
  • valve 12 is fitted to the unit 1 by screwing it over the pipe fitting 38 and can easily be dismounted for the maintenance and in case the replacement of parts thereof.
  • a port or opening 30 is provided in the first unit I in correspondence with the pipe fitting 3 and allows for the introduction of a temperature probe, typically a (not shown) thermistor.
  • a by-pass valve 16 and a pressure switch 15 actuated by a pressure difference for opening the burner-enabling microswitch 155 in case the water level within the heating system is low and/or the pressure is null (due to a blocked pump).
  • such pressure switch device 15 comprises a chamber 150 formed near the fixture housing the by-pass valve (illustrated later on), and divided into two portions by a diaphragm 151.
  • One of such portions being connected through a passage 165 with the three-way valve, and the other portion being connected through a passage 164 to a point before the pump P, i.e. to a lower pressure area.
  • the water is pressurized by the pump P on the side of the valve 4, with the other side being at a lower pressure, and the so formed pressure difference acts on the diaphragm 151 that actuates the safety microswitch 155.
  • the pipe fitting 48 is further connected to the by-pass valve 16, also illustrated in Fig. 6, which comprises a threaded metal duct 166 engaging the thread 161 of the pipe fitting 160 and carries a valve body 162 provided with longitudinal passages and urged by a coil spring 163.
  • the by-pass valve 16 also illustrated in Fig. 6, which comprises a threaded metal duct 166 engaging the thread 161 of the pipe fitting 160 and carries a valve body 162 provided with longitudinal passages and urged by a coil spring 163.
  • the by-pass valve opens and a portion of the water is recirculated through the by-pass pipe section 10A provided for supplying a certain amount of water to the main heat exchanger 2 under any circumstances.
  • Unit I further provides two pipe fittings 22 and 23 for the connection with the water/water heat exchanger 17, for the inlet of the heating water and the outlet of the domestic heated water, respectively.
  • the second unit or valve sub-assembly II is shown as framed by a dashed line in Fig. 1.
  • the construction of such block II, also called primary return distributor, is illustrated in details in Figures 9 to 12. It comprises the following components that are formed or mounted as an integral component.
  • a device 14 activated by a pressure difference is housed in the main duct 60 for the domestic water (see Fig. 10) that will be illustrated with more details later, a pipe fitting 6 for the connection to the radiator(s) R, an inlet pipe fitting 8 for the domestic water, an outlet pipe fitting 7 to the pump, and two pipe fittings 32, 33 for the connection to said water/water heat exchanger 17.
  • the device 14 comprises a threaded locking ring 140 (which fits the duct 60), a valve body 141 having an orifice 145 and located at one end of a coil spring 146, and a spacer 147 formed as a cage of plastic material crimped or otherwise fixed to the ring in order to act like a spring stop.
  • the water coming from the water inlet tube 8 and directed to the plate-type heat exchanger 17 via the pipe 143 initially passes an orifice 145 in the valve body 141 as long as its flow rate is less than a predetermined value, e.g. 2 liters/min.
  • a predetermined value e.g. 2 liters/min.
  • the by-pass device is opened at a predetermined pressure level which is determined by the spring characteristics.
  • the pressure difference device 14 is dimensioned for housing a flow rate regulator 80 (a so called Mannesmann valve) that keeps the flow rate constant even if the pressure varies.
  • a flow rate regulator 80 a so called Mannesmann valve
  • Such known valve employs a rubber seal of the O ring type that is deformed in accordance with the pressure and therefore progressively narrows the passage when the pressure increases.
  • Such regulator is useful for keeping the flow rate constant, as requested, even when the local pressure of the water is rather high and the tap fully opened, thus avoiding a situation in which water not heated enough is supplied to the user.
  • the regulator is not used, that is such a regulator is not fitted in the device since it causes a remarkable pressure drop.
  • the pressure difference device there are further incorporate a metal ring 81 for fastening the regulator 80, and a metal mesh cylindrical filter 82, with a plug 61 closing the duct 60 at the right end.
  • the replacement of the regulator e.g. when this latter becomes clogged due to limestone or ageing, is quite simple.
  • the cost of the regulator is very low and the replacement thereof very quick, the more so when compared with present devices equipped with an associated nut or additional components.
  • the protection filter formed as a metal mesh is housed in the body of the device without requiring additional components.
  • a tap 21 for the feedwater makeup of the heating system is fitted into a seat formed at an angle on the pipe fitting 8, and laterally to the duct 60 housing the pressure difference device, there is formed a duct 65 which is longitudinally divided and houses at one end a check valve 13 comprising a threaded plug 67 and an axially located coil spring 68 with this later carrying at its other end a valve body 69 equipped with an O rig 70.
  • the above arrangement realizes a check valve 13 incorporated in the group of the invention, so that the water for filling the circuit and coming from the water system via the filling tap 21 must overcome the spring force in order to open the communication passage. This way it is prevented the risk that the heating water can accidentally reach the domestic water circuit (usually containing drinkable water) in case the pressure in the water system is too low, or when there is no water in the system, e.g. after a draining for a maintenance or repairing operation.
  • the group further includes a tap for draining the heating system.
  • the plug 67 is axially bored and communicating with the inside of duct 65 via a passage 83, and contains a closing plunger actuated by an outer knob 80.
  • a pipe fitting 51 for a pressure gauge is formed near the pipe fitting 7, and a fitting 11 for an expansion tank 71 adapted to ac- comodate the water dilatation is realized near the former.
  • a fitting 18 for mounting a safety valve (not shown).
  • a highly effective plate-type heat exchanger 17 of known design featuring very low flow resistance and a size that is small and can be varied during the manufacturing thereof in accordance with the requested flow rate.
  • Fig. 4 The manner by which the plate-type heat exchanger and the two units are connected together is shown in Fig. 4 for the first unit, that is for the heating hot water inlet and the domestic hot water outlet. More precisely the first connection is carried out through a pipe fitting 22 engaging a tightening nut 29 to be screwed on a threaded pipe fitting 24 of the plate-type heat exchanger 17, while for the oulet of the domestic hot water there is provided a smooth pipe fitting 23 receiving a smooth pipe fitting 27 of the heat exchanger, equipped with a seal ring (e.g. an O ring) 28 received in a groove.
  • a seal ring e.g. an O ring
  • the tightening the upper nuts causes a tie rod action that brings about also the connection of the lower smooth fittings, with the seal being ensured by the seal rings. Thanks to the above mentioned action, for releasing the heat exchanger there is required the loosening of two nuts only (or their tightening for the assembling therof).
  • FIG. 14 schematically illustrate an embodiment of the present invention which is particularly useful for a vertical mounting, whereas the embodiment shown in Fig. 15 is particularly preferred when the pipe fittings 5, 6 and 8, 9 are horizontal.
  • the same numeral references of Figures 2 and 3 have been used in both Figures 14 and 15 for indicating equal or substantially equivalent parts.

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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)
  • Safety Valves (AREA)
EP93200629A 1992-03-12 1993-03-04 Ventilanordnung für Anlagen, die sowohl für Heizungs- als auch für Haushaltsheisswasser vorgesehen ist Expired - Lifetime EP0568122B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI920575A IT1254266B (it) 1992-03-12 1992-03-12 Gruppo idraulico perfezionato per impianti misti di riscaldamento e acqua sanitaria
ITMI920575 1992-03-12

Publications (3)

Publication Number Publication Date
EP0568122A2 true EP0568122A2 (de) 1993-11-03
EP0568122A3 EP0568122A3 (de) 1994-08-31
EP0568122B1 EP0568122B1 (de) 1996-12-11

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ID=11362397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93200629A Expired - Lifetime EP0568122B1 (de) 1992-03-12 1993-03-04 Ventilanordnung für Anlagen, die sowohl für Heizungs- als auch für Haushaltsheisswasser vorgesehen ist

Country Status (4)

Country Link
EP (1) EP0568122B1 (de)
DE (1) DE69306461T2 (de)
ES (1) ES2096189T3 (de)
IT (1) IT1254266B (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0693658A1 (de) * 1994-07-20 1996-01-24 Giuseppe Fugazza Verbesserte Ventilanordnung für Anlagen, die sowohl für Heizungs- als auch für Haushaltsheisswasser vorgesehen ist
EP0791772A2 (de) * 1996-02-22 1997-08-27 WILO GmbH Dreiwegeventil für hydraulische Schnittstelle
GB2314914A (en) * 1996-05-31 1998-01-14 Nicholas Julian Jan F Macphail Valves in hot water and space heating systems
DE19632605A1 (de) * 1996-08-13 1998-02-19 Wilo Gmbh Hydraulikbaugruppe für eine kombinierte Heizwasser- und Sanitärwasseranlage
DE19632604A1 (de) * 1996-08-13 1998-02-19 Wilo Gmbh Befülleinrichtung für Hydraulikbaugruppe
EP0953808A2 (de) 1998-05-02 1999-11-03 WILO GmbH Hydraulikbaugruppe mit Drucksensor für eine kombinierte Heizwasser- und Sanitärwasseranlage
EP0976989A2 (de) * 1998-07-29 2000-02-02 IABER S.p.A. Wasserkreislauf eines kombinierten Gaswandkessels
EP1130342A3 (de) * 2000-02-21 2003-04-02 Grundfos A/S Baueinheit für eine Kompaktheizungsanlage
FR2885481A1 (fr) * 2005-05-04 2006-11-10 Telematech Sarl Dispositif de controle et de regulation d'une installation de circulation de fluide
EP1845314A1 (de) * 2006-04-14 2007-10-17 Fugas Spa Hydraulikbaugruppe für den Rücklauf eines Wandkessels
EP2413044B1 (de) * 2010-07-30 2015-10-28 Grundfos Management A/S Brauchwassererwärmungseinheit
JP2018109482A (ja) * 2017-01-06 2018-07-12 株式会社ノーリツ 暖房給湯装置
WO2018135946A1 (en) * 2017-01-19 2018-07-26 Limes Investment Management B.V. Connection assembly with safety and method
EP3150923B1 (de) 2015-10-02 2019-03-06 Grundfos Holding A/S Hydraulisches system
WO2022102477A1 (en) * 2020-11-10 2022-05-19 Daikin Industries, Ltd. A safety configuration in hydroblock systems

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0226246A1 (de) * 1985-12-04 1987-06-24 Nederlandse Industriele Maatschappij NEFIT B.V. Gerät zum Kontrollieren eines Heisswasserbereiters
DE3406104A1 (de) * 1983-03-01 1988-05-05 Vaillant Joh Gmbh & Co Verfahren zum umsteuern einer waermequelle und vorrichtung zur durchfuehrung des verfahrens
AT389584B (de) * 1988-04-15 1989-12-27 Vaillant Gmbh Heizungsanlage
EP0466010A1 (de) * 1990-07-09 1992-01-15 Giuseppe Fugazza Ventilvorrichtung für Heizungsanlagen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406104A1 (de) * 1983-03-01 1988-05-05 Vaillant Joh Gmbh & Co Verfahren zum umsteuern einer waermequelle und vorrichtung zur durchfuehrung des verfahrens
EP0226246A1 (de) * 1985-12-04 1987-06-24 Nederlandse Industriele Maatschappij NEFIT B.V. Gerät zum Kontrollieren eines Heisswasserbereiters
AT389584B (de) * 1988-04-15 1989-12-27 Vaillant Gmbh Heizungsanlage
EP0466010A1 (de) * 1990-07-09 1992-01-15 Giuseppe Fugazza Ventilvorrichtung für Heizungsanlagen

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0693658A1 (de) * 1994-07-20 1996-01-24 Giuseppe Fugazza Verbesserte Ventilanordnung für Anlagen, die sowohl für Heizungs- als auch für Haushaltsheisswasser vorgesehen ist
EP0791772A3 (de) * 1996-02-22 1998-03-11 WILO GmbH Dreiwegeventil für hydraulische Schnittstelle
EP0791772A2 (de) * 1996-02-22 1997-08-27 WILO GmbH Dreiwegeventil für hydraulische Schnittstelle
GB2314914B (en) * 1996-05-31 2000-12-06 Nicholas Julian Jan F Macphail Improvements in heating system control
GB2314914A (en) * 1996-05-31 1998-01-14 Nicholas Julian Jan F Macphail Valves in hot water and space heating systems
EP0825387B2 (de) † 1996-08-13 2005-04-27 WILO GmbH Hydraulikbaugruppe, anschliessbar an eine kombinierte Heizwasser- und Sanitärwasseranlage
EP0825387A2 (de) 1996-08-13 1998-02-25 WILO GmbH Hydraulikbaugruppe für eine kombinierte Heizwasser- und Sanitärwasseranlage
DE19632605A1 (de) * 1996-08-13 1998-02-19 Wilo Gmbh Hydraulikbaugruppe für eine kombinierte Heizwasser- und Sanitärwasseranlage
EP0829687A2 (de) 1996-08-13 1998-03-18 WILO GmbH Befülleinrichtung für Hydraulikbaugruppe
DE19632604A1 (de) * 1996-08-13 1998-02-19 Wilo Gmbh Befülleinrichtung für Hydraulikbaugruppe
EP0953808A2 (de) 1998-05-02 1999-11-03 WILO GmbH Hydraulikbaugruppe mit Drucksensor für eine kombinierte Heizwasser- und Sanitärwasseranlage
DE19819714A1 (de) * 1998-05-02 1999-11-04 Wilo Gmbh Hydraulikbaugruppe mit Drucksensor für eine kombinierte Heizwasser- und Sanitärwasseranlage
EP0953808A3 (de) * 1998-05-02 2001-08-22 WILO GmbH Hydraulikbaugruppe mit Drucksensor für eine kombinierte Heizwasser- und Sanitärwasseranlage
EP0976989A2 (de) * 1998-07-29 2000-02-02 IABER S.p.A. Wasserkreislauf eines kombinierten Gaswandkessels
EP0976989A3 (de) * 1998-07-29 2000-11-08 IABER S.p.A. Wasserkreislauf eines kombinierten Gaswandkessels
EP1130342A3 (de) * 2000-02-21 2003-04-02 Grundfos A/S Baueinheit für eine Kompaktheizungsanlage
FR2885481A1 (fr) * 2005-05-04 2006-11-10 Telematech Sarl Dispositif de controle et de regulation d'une installation de circulation de fluide
EP1845314A1 (de) * 2006-04-14 2007-10-17 Fugas Spa Hydraulikbaugruppe für den Rücklauf eines Wandkessels
EP2413044B1 (de) * 2010-07-30 2015-10-28 Grundfos Management A/S Brauchwassererwärmungseinheit
EP3150923B1 (de) 2015-10-02 2019-03-06 Grundfos Holding A/S Hydraulisches system
US10830458B2 (en) 2015-10-02 2020-11-10 Grundfos Holding A/S Hydraulic system
EP3150923B2 (de) † 2015-10-02 2022-06-08 Grundfos Holding A/S Hydraulisches system
JP2018109482A (ja) * 2017-01-06 2018-07-12 株式会社ノーリツ 暖房給湯装置
WO2018135946A1 (en) * 2017-01-19 2018-07-26 Limes Investment Management B.V. Connection assembly with safety and method
NL2018198B1 (nl) * 2017-01-19 2018-07-30 Limes Investment Man B V Verbindingvulsamenstel met beveiliging en werkwijze
WO2022102477A1 (en) * 2020-11-10 2022-05-19 Daikin Industries, Ltd. A safety configuration in hydroblock systems

Also Published As

Publication number Publication date
EP0568122A3 (de) 1994-08-31
IT1254266B (it) 1995-09-14
ITMI920575A1 (it) 1993-09-12
ITMI920575A0 (it) 1992-03-12
ES2096189T3 (es) 1997-03-01
DE69306461D1 (de) 1997-01-23
EP0568122B1 (de) 1996-12-11
DE69306461T2 (de) 1997-05-15

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