EP0945687A1 - Druckmittelbetätigtes Umschaltventil - Google Patents

Druckmittelbetätigtes Umschaltventil Download PDF

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Publication number
EP0945687A1
EP0945687A1 EP99105040A EP99105040A EP0945687A1 EP 0945687 A1 EP0945687 A1 EP 0945687A1 EP 99105040 A EP99105040 A EP 99105040A EP 99105040 A EP99105040 A EP 99105040A EP 0945687 A1 EP0945687 A1 EP 0945687A1
Authority
EP
European Patent Office
Prior art keywords
control
diaphragm
control shaft
valve
diverting
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
EP99105040A
Other languages
English (en)
French (fr)
Other versions
EP0945687B1 (de
Inventor
Michele Rossignoli
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.)
ROSSIGNOLI, MICHELE
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to SI9930248T priority Critical patent/SI0945687T1/xx
Publication of EP0945687A1 publication Critical patent/EP0945687A1/de
Application granted granted Critical
Publication of EP0945687B1 publication Critical patent/EP0945687B1/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
    • 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

Definitions

  • the present invention relates to a pressure-actuated diverting valve with transversely controlled switching.
  • a three-way valve in such boilers has already been proposed which is associated with a membrane valve for connection, on the one side, between the boiler (primary hot gas/water exchanger) and a battery of radiators in a heating system (primary circuit), and, on the other side, between a water supply duct and a secondary water/water exchanger (secondary circuit) for producing sanitary water.
  • Such a three-way valve is provided with a control shaft which is slidably mounted on seals and is actuated by a switching system arranged at the head of the valve.
  • the main object of the present invention is to provide a pressure-actuated diverting valve which is highly efficient and with minimum load losses both in the three-way portion and in the membrane portion of the valve.
  • Another object of the present invention is to provide a new actuation device which, by taking advantage of the longitudinal translatory motion of the valve control shaft, is designed to actuate switching means arranged on one side of the valve.
  • Another object of the present invention is to provide a pressure-actuated diverting valve at competitive manufacturing costs.
  • a pressure-actuated diverting valve having a three-way valve portion with a movable control valve element for controlling the flow from a primary circuit, a diaphragm valve portion for controlling the flow to a secondary circuit, a first control shaft and a second control shaft which are arranged parallel to each other and slidingly mounted on seals, the said first control shaft being designed to actuate said control valve element and said second control shaft being designed to be actuated by said diaphragm of said diaphragm valve portion, and resilient loading means for said control valve element and for said diaphragm, characterized in that between said first control shaft and said second control shaft there is provided a transverse slider which is axially movable and has one end thereof operatively engaged with said first and second control shafts, whereby the said slider moves or rotates in one direction, if the control shafts move mutually closer, and in the opposite direction, if they move apart from each other, and its other end arranged to actu
  • the adjacent ends of said first and second control shafts and said end of said transverse slider engaged therewith are frusto-conical in shape, thereby forming an inclined-surface motion transmission system.
  • a diverting valve 1 comprises three main parts, i.e. a pressure-actuated portion 2, a hydraulic diverting portion 3 and an electrical switching portion 4.
  • the pressure-actuated portion 2 is constituted by two half-shells 5 and 6, e.g. made of brass, which are fixed together, so as to face each other, by means of four angularly spaced screws 7 and delimit an inner chamber.
  • An annular seat 8 is formed along the peripheral rim of each half-shell 5 and 6 and is arranged to accommodate the enlarged peripheral rim 9 of a flexible annular membrane 10 which divides the internal chamber delimited by the half-shells 5 and 6 into two compartments 11 and 12 and also acts as a sealing gasket between the half-shells.
  • the membrane 10 In its central region, the membrane 10 is supported by an axial annular plate 13, e.g. made of plastics, which has, on its side directed towards compartment 12, an axial raised portion 14 that delimits a seat 15.
  • an axial annular plate 13 e.g. made of plastics, which has, on its side directed towards compartment 12, an axial raised portion 14 that delimits a seat 15.
  • a relatively strong helical spring 16 is accommodated in the compartment 12 and arranged concentric with respect to the membrane 10 and the plate 13; its other end reacting against the internal wall of the half-shell 5.
  • An axial control shaft 17 is mounted so that it can be axially moved through the compartments 11 and 12 inside the half-shell 5 and in a sleeve 19 made of self-lubricating material, such as Teflon, provided with an inner sealing O-ring 20 accommodated in a suitable seat formed in the half-shell 6.
  • the control shaft extends out of the half-shell 6 and terminates with a frusto-conical tip 21.
  • control shaft 17 is provided with a snap ring 22 against which a flanged sleeve abuts; an end of a helical spring 24, weaker than the spring 16, abuts against said sleeve and the other end of said spring abuts against the seat 15 of the plate 13.
  • control shaft 17 supports, e.g. by means of two retaining rings 25 and 26, a minimum flow-rate plate 27 which is arranged to abut against an axial annular rib 28 of the plate 13.
  • the plate 13 has a certain number of central maximum flow-rate slots 29 through which connection between the compartments 11 and 12 is established.
  • the compartment 11 is provided with an inlet connector 30 and the compartment 12 has an outlet connector 31.
  • the pressure-actuated portion 2 is arranged to be connected to a sanitary circuit between a line coming from a water distribution system connected to the connector 30 and a secondary water/water exchanger (not shown in the drawings), in which water delivered through the outlet connector 31 is heated before reaching a user's outlet.
  • the hydraulic diverting portion 3 comprises a three-way valve body, i.e., a body provided with an inlet connector 35 for hot water coming from a primary exchanger (boiler), a connector 36 for delivering hot water to heating radiators, and a connector 37 for delivering hot water to a secondary water/water exchanger to produce sanitary water.
  • a double control valve element 38, 39 is slidably mounted in the valve body on a control shaft 40 which is parallel to, or axially aligned with, the control shaft 17 of the pressure-actuated portion 2.
  • Each valve element 38 and 39 supports a peripheral sealing O-ring, 41 and 42 respectively, arranged to abut against a respective inner shoulder 43 and 44.
  • the outer surface of the double valve element is radiused at 45 and 46 in order to minimize load losses.
  • the double valve element 38, 39 has one end abutting against a retaining ring 47 carried by the control shaft 40 and its other end abutting against an axial helical spring 48 which in turn reacts against, and is guided by, a three-spoke member 39 which is kept in its seat by a retaining ring 50 and also acts as a guide for the control shaft 40.
  • the control shaft 40 on its side directed towards the pressure-actuated portion 2, is axially sliding supported by a sleeve 51 made of self-lubricating material, such as Teflon, with a sealing O-ring 52 interposed, and terminates with a frusto-conical tip.
  • a sleeve 51 made of self-lubricating material, such as Teflon, with a sealing O-ring 52 interposed, and terminates with a frusto-conical tip.
  • the three-way body at its end opposite to the connector 36, internally accommodates an extension 53 of the half-shell 6, which is fixed in position by means of stop dowels 54, while sealing is provided by an O-ring 55
  • Two seats are also formed in the extension 53: one seat 56 is designed to accommodate the sleeve 19, that supports the control shaft 17, and a sealing gasket 57, and the other seat 58 is designed to accommodate the sleeve 51 for supporting the control shaft 40, and a sealing gasket 59
  • An electrical switching portion 4 is accommodated in one of the holes 60 and comprises a cylindrical slider 61, preferably made of self-lubricating material such as Teflon, whose distal end 62 is frusto-conical in shape and whose proximal end is provided with a collar 63 and an enlarged head 64, a fusto-conical membrane 65 which is inserted in the collar 63 of the slider at its smaller flat face, a tight box-like body 66 containing the membrane 65 and acting as a guide for the slider 61, and one or more microswitches 67, 67a which are accommodated in the box-like body 66 and abut against the membrane 65.
  • a cylindrical slider 61 preferably made of self-lubricating material such as Teflon, whose distal end 62 is frusto-conical in shape and whose proximal end is provided with a collar 63 and an enlarged head 64, a fusto-conical membrane 65 which is inserted in the collar 63 of
  • the box-like body 66 can be provided with a removable cover 68 which can be fixed in position, e.g. by one or more screws 69.
  • the box-like body 66 has two lower extensions 70 in the shape of an at least partly resilient half-collar and arranged to be inserted, by snapping, around the extension 53 of the half-shell 6, as well as a hollow projection 71 on the centerline of the collar, which is designed to fit in the outer diameter or diameters of a hole 60 and to act as a sliding guide for the slider 61.
  • a flared area 72 is provided at the inner end of the internal opening of the projection 71 to delimit a seat for the frusto-conical membrane 65.
  • a space 73 is delimited above said flared region to accommodate the microswitches 67 provided with push-buttons 74 which are directed toward the head 64 of the slider 61.
  • the hot water coming from the primary exchanger through the connector 35 is then forwarded to the secondary exchanger to start the production of sanitary hot water.
  • an electrical switching must occur at the portion 4.
  • Both hydraulic and electric switchings occur starting from a minimum flow-rate of approximately 2 liters/minute, which is adjusted by two calibrated slots formed in the minimum flow-rate plate 27, which is moved by the control shaft 17 and is kept against the rib 28 of the membrane supporting plate 13 by the spring 24.
  • a manual flow-rate regulator 80 is provided which can be actuated by a square-head element 81 which, by being rotated through 90° throttles the water intake.
  • a shaped annular disk 85 is provided in the compartment 12 between the membrane 10 and the outlet 35.
  • the flow-rate through the calibrated slots 29 of the plate 13, together with the throttling effect performed by the cone 14 at the central hole 86 of the disk 85, is responsible for a stabilization process of the differential pressure between the compartment 11 and the intermediate compartment 12a and between the membrane 10 and the disk 85, which leads to a stabilization of the flow-rate which depends upon the number and amplitude of the calibrated slots 29.

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)
  • Multiple-Way Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Fluid-Driven Valves (AREA)
  • Vehicle Body Suspensions (AREA)
EP99105040A 1998-03-24 1999-03-22 Druckmittelbetätigtes Umschaltventil Expired - Lifetime EP0945687B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9930248T SI0945687T1 (en) 1998-03-24 1999-03-22 Pressure-actuated diverting valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT98VR000019A IT1299650B1 (it) 1998-03-24 1998-03-24 Valvola deviatrice idropressostatica a commutazione comandata trasversalmente
ITVR980019 1998-03-24

Publications (2)

Publication Number Publication Date
EP0945687A1 true EP0945687A1 (de) 1999-09-29
EP0945687B1 EP0945687B1 (de) 2003-02-19

Family

ID=11428504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105040A Expired - Lifetime EP0945687B1 (de) 1998-03-24 1999-03-22 Druckmittelbetätigtes Umschaltventil

Country Status (6)

Country Link
EP (1) EP0945687B1 (de)
AT (1) ATE232954T1 (de)
DE (1) DE69905412T2 (de)
ES (1) ES2192809T3 (de)
IT (1) IT1299650B1 (de)
SI (1) SI0945687T1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2813950A1 (fr) * 2000-09-14 2002-03-15 Chaffoteaux Et Maury Vanne distributrice hydraulique pour systeme de production d'eau chaude de chauffage et d'eau chaude sanitaire
EP1406035A1 (de) * 2002-10-04 2004-04-07 Faro Srl Elektrisches Drei-Wege-Umschaltventil
EP1422451A1 (de) * 2002-11-20 2004-05-26 Honeywell Ag Ventilbaugruppe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179410A (en) * 1985-07-11 1987-03-04 Renzo Rossignoli Supporting and sealing device for movable components particularly for valve assemblies
EP0447851A2 (de) * 1990-03-08 1991-09-25 FUGAS s.r.l. Dreiwegeventil
EP0466010A1 (de) * 1990-07-09 1992-01-15 Giuseppe Fugazza Ventilvorrichtung für Heizungsanlagen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179410A (en) * 1985-07-11 1987-03-04 Renzo Rossignoli Supporting and sealing device for movable components particularly for valve assemblies
EP0447851A2 (de) * 1990-03-08 1991-09-25 FUGAS s.r.l. Dreiwegeventil
EP0466010A1 (de) * 1990-07-09 1992-01-15 Giuseppe Fugazza Ventilvorrichtung für Heizungsanlagen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2813950A1 (fr) * 2000-09-14 2002-03-15 Chaffoteaux Et Maury Vanne distributrice hydraulique pour systeme de production d'eau chaude de chauffage et d'eau chaude sanitaire
EP1188991A1 (de) * 2000-09-14 2002-03-20 Chaffoteaux Et Maury Hydraulisches Verteilerventil für kombinierte Heizungsanlage
EP1406035A1 (de) * 2002-10-04 2004-04-07 Faro Srl Elektrisches Drei-Wege-Umschaltventil
EP1422451A1 (de) * 2002-11-20 2004-05-26 Honeywell Ag Ventilbaugruppe

Also Published As

Publication number Publication date
DE69905412T2 (de) 2003-11-27
ATE232954T1 (de) 2003-03-15
EP0945687B1 (de) 2003-02-19
ES2192809T3 (es) 2003-10-16
IT1299650B1 (it) 2000-03-24
DE69905412D1 (de) 2003-03-27
SI0945687T1 (en) 2003-08-31
ITVR980019A1 (it) 1999-09-24

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