EP0652408B1 - Sehr kompakte hydraulische Baugruppe für gasbeheizte Wandkessel - Google Patents

Sehr kompakte hydraulische Baugruppe für gasbeheizte Wandkessel Download PDF

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Publication number
EP0652408B1
EP0652408B1 EP19940117592 EP94117592A EP0652408B1 EP 0652408 B1 EP0652408 B1 EP 0652408B1 EP 19940117592 EP19940117592 EP 19940117592 EP 94117592 A EP94117592 A EP 94117592A EP 0652408 B1 EP0652408 B1 EP 0652408B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
manostat
water
valve
circuit
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.)
Expired - Lifetime
Application number
EP19940117592
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English (en)
French (fr)
Other versions
EP0652408A1 (de
Inventor
Giorgio Pastorino
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.)
Iaber SpA
Original Assignee
BERETTA A ING SpA
ING A BERETTA SpA
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Publication date
Application filed by BERETTA A ING SpA, ING A BERETTA SpA filed Critical BERETTA A ING SpA
Publication of EP0652408A1 publication Critical patent/EP0652408A1/de
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Publication of EP0652408B1 publication Critical patent/EP0652408B1/de
Anticipated expiration legal-status Critical
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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
    • 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 

Definitions

  • the present invention generally relates to wall gas-fired boilers and, more particularly, to wall gas-fired boilers comprising an improved hydraulic assembly for the production of hot water for sanitary purposes and for environmental heating purposes.
  • the thermal carrier transports the heat directly to the heating system comprising, for example radiating elements, and indirectly to the water circuit for sanitary purposes through a second water-water heat exchanger in which the heat exchange with the sanitary water occurs.
  • a plurality of valves and interconnected control means are necessary for the correct and safe operation of such boilers.
  • the aim of the present invention is to overcome the above disadvantages and limitations by providing a gas-fired boiler comprising an improved hydraulic connection among the valves and/or the various control means which minimizes the overal dimensions and the costs while maintaining a good assembly facility.
  • Patent Application EP-A-0 236 235 discloses a wall boiler comprising a burner connected to a gas supply conduit, a combustion chamber, a heat exchanger, distribution, exchange and regulation components and passages for connecting these components to each other.
  • the boiler comprises also conduits connected to the heat exchanger and external connecting elements.
  • the distribution, exchange and regulation components are grouped on a common block comprising a portion of the functional elements of each of said components and in which the outlets of the passages for each component are disposed. These passages are located inside the block.
  • the block is substantially parallelepipedal in shape and extends from a bottom base of the boiler to the lower portion of the combustion chamber and along all the width of the boiler. This block is intended to cooperate with the base of the boiler in which the valves for the various external hydraulic circuits are arranged.
  • the object of the present invention is to minimize the overall dimensions of the interconnections by providing a boiler with a very compact hydraulic block which is easy to be mounted and maintained and in which the connection of the valves and the various control means is obtained very quickly and without the use of intermediates pipes.
  • the wall gas-fired boiler comprises two separate hydraulic circuits, i.e. a main circuit for the heating system and a secondary circuit for heating the sanitary water, a gas burner, a main gas-water heat exchanger, a circulation pump, a secondary water-water plate-type heat exchanger, a three-way valve for switching the hot water flow coming from the main heat exchanger to the secondary heat exchanger, control means, such as a manostat, a by-pass valve, a safety valve and a differential manostat and a single block provided with seats for connecting said three-way valve, said by-pass valve, said safety valve, the pipes of said main hydraulic circuit, said secondary heat exchanger and said control means to the block (1) whereby said seats for the connection of the above components to the block (1) are arranged all around said single block and are internally or externally threaded for permitting the connection in threadely relationship of the above components to the seats, said single block being provided with an internal conduct interconnecting the seats for the by-passe valve, for the safety manostat,
  • said differential manostat comprises a venturi, a connecting element to the plate-type heat exchanger and a connecting element to the single block, integrally formed therein.
  • the hydraulic assembly is provided with a connector for the connection to a hydraulic accumulator.
  • Fig. 1 diagrammatically shows the gas-fired boiler according to the present invention together with the hydraulic assembly.
  • the wall gas-fired boilers herein contemplated comprise a main circuit for the flow of the hot water intended for the heating system, a secondary circuit for the flow of the hot water intended for sanitary purposes, a main heat exchanger 7 connected to the main circuit, a secondary heat exchanger 10 connected to the secondary circuit, a three-way valve 4, a differential manostat 3 for controlling the three-way valve 4, a by-pass valve 5, a safety manostat 2, a safety valve and a plurality of connectors for connecting external pipes of the main circuit and the secondary circuit.
  • the main part of the hydraulic assembly of the boiler according to the present invention is formed by a single block 1 which has been designed for receiving all the main components of the boiler hydraulic circuit.
  • the differential manostat 3 for controlling the three-way valve 4, the safety manostat 2, the by-pass valve 5 and the connectors 12,13,14A, 15A,16,17,18 and 19 to which the return pipe 24 of the main circuit, the delivery pipe 25 of the main circuit, the inlet connector 14B of the plate-type secondary heat exchager 10, the outlet connector 15B of the latter, the return pipe 29 of the heating circuit, the delivery pipe 28 of the heating circuit, the connecting pipe 20 to the hydraulic accumulator 21 and the delivery pipe 26 of the sanitary water circuit are connected.
  • the heating circuit 11 provided with radiating elements R, the hydraulic accumulator 21, the plate-type heat exchanger 10, the delivery and return pipes 25 and 24 of the main circuit and the delivery and return pipes 27 and 26 of the secondary circuit for heating the sanitary water are connected.
  • the differential manostat 3 controls the three-way valve 4 by means of an external lever 30 which permits an easy regulation and maintenance thereof.
  • the circulation pump 6 in this case can be located in the return pipe 29 of the heating circuit, what permits undesirable water hammering effects to be avoided.
  • Fig. 2A diagrammatically shows the interconnections in the inner portion of the single block 1, here shown in dotted lines.
  • the conduct 31 interconnects the three-way valve 4 and the plate-type secondary heat exchanger 10, the conducts 39,40 interconnect the safety manostat 2 provided with electric switch 38 and the three-way valve 4, the conduct 37 provided with the by-pass valve 5 interconnects the differential manostat 3 to the three-way valve 4.
  • a lever 30 (outside the single block 1) with pivot F is provided for transmitting the control movement given by the differential manostat 3 to the three-way valve 4.
  • a microswitch 32 is operated by the manostat 3 and the conducts 33,35 and 36 interconnect the differential manostat 3.
  • 41 is the by-pass valve.
  • Fig. 2A the condition of heating only is shown since, because no flow passes in the pipes 26 and 27 of the sanitary water, the differential manostat 3 remains in a lowered position because there is pressure balance between the upper chamber and the lower chamber thereof and the spring 42 assures therefore the lowered steady position of the lever.
  • the lever 30 maintains the three-way valve 4 closed and this position is assured by the preloaded spring 44 located within said valve 4.
  • the single active circuit is therefore the heating circuit only wherein the water, after being heated in the main heat exchanger 7, flows through the pipe 25, enters the conduct 31 but does not flow therein, flows in the delivery pipe 28, reaches the radiating elements R (not shown in Figure) and then returns through the return pipe 29.
  • the water Once the water is come within the hydraulic assembly 1, it flows through the three-way valve 4 which switches then it in the return pipe 24 to which the circulation pump 6 is connected.
  • the safety manostat 2 is connected to the three-way valve 4 by means of the pipes 39 and 40 in order to confirm the presence of pressurized water in the main circuit; on the contrary (lack of water in the main circuit and/or in the not operated circulation pump), a microswitch 38 connected thereto by menas of the stem 47, disables the pump 6 and the burners 8.
  • Fig. 2B is represented the condition in which the sanitary hot water is required.
  • This requirement causes a sanitary water flow through the pipes 26 and 35 in which the venturi 34 causes a vacuum in the upper chamber of the manostat 3 through the conduct 46; this vacuum causes the stem 43 of the manostat 3 to lift and to simultaneously change the condition of the microswitch 32 and the control lever 30 to rotate.
  • the lever 30 switches the three-way valve 4 so as to connect the sanitary water circuit and to disconnect the heating circuit by closing the return pipe 29 and permits the flow of the water through the conduct 31.
  • the single block 1 is represented in a perspective view, in elevational view and in cross section, respectively.
  • this single block is provided with the various seats for housing, mounting and connecting the various components and pipes of the boiler.
  • the preassembling operation of the various components is usually carried out in the shop so as to form, as better shown in Fig. 4B, a very compact structure which is then integrated into the boiler.
  • Fig. 3 shows the single block 1 provided with the seat 50 for the connector of the plate-type heat exchanger 10 of Fig. 2A, the seat 51 for the by-pass valve 5, the seat 52 for the connector of the pipe 24 of Fig. 2A, the seat 53 for the connection of the differential manostat 3 of Fig, 2A, the seat 54 for the connector of the pipe 25 of Fig. 2A, the seat 55 for the safety manostat 2 of Fig. 2A to which the safety switch 38 of Fig. 2A is usually connected, the seat 56 for facilitating the access of the wrench necessary for connecting the plate-type heat exchanger 10, the seat 57 for the three-way valve 4 of fig. 2A, the seat 58 for a safety valve, the seat 59 for the pipe 28 of Fig. 2A, the seat 60 for a flowmeter, the seat 61 for the pipe 29 of Fig. 2A and finally the seat 62 for the pipe 20 of Fig. 2A.
  • the differential manostat 3 is designed so as to contain the venturi 34 and a tube for the connection to the pipe 26 of Fig. 2A, said venturi 34 and said tube being integrally formed in the differential manostat.
  • Fig. 6 there are shown in cross section some internal conducts interconnecting the various above mentioned seats; for example the conduct 63 interconnecting the seats 51,55,58 and 61 of Fig. 5.
  • Fig, 4A is a front view of all the hydraulic assembly obtained after that all the necessary components have been mounted in the single block, wherein all the seats cited in the description of Fig. 3 are shown with the exception of the seat 64 usually present in the differential manostat 3 in turn integrated in the seat 53 of Fig.3.
  • Fig. 4B shows in a perspective view the hydraulic assembly.
  • two electric switches 63A and 63B corresponding to the switches 32 and 38, respectively shown in Fig. 2A and the external lever 65 by means of which the differential manostat 3 controls the switching operation of the three-way valve 4.
  • the lever corresponds to the lever 30 in Figure 2A and in Fig. 1.

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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)
  • Multiple-Way Valves (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Claims (3)

  1. Gasgeheizter Wandkessel bestehend aus zwei getrennten Wasserkreisläufen, d.h. einen Hauptwasserkreislauf (24,25,-28,29) für die Heizanlage und einen Sekundärwasserkreislauf (24,25,27,26,31) zum Erhitzen von sanitärem Wasser, einem Gasbrenner (8), einem Gas-Wasser Hauptwärmeaustauscher (7), einer Umlaufpumpe (6), einem sekundären, plattenartigen Wasser-Wasser Wärmeaustauscher (10), einem Dreiwegeventil (4) zum Umschalten des aus dem Hauptwärmeaustauscher (7) strömenden Heißwasserflusses zum sekundären Wärmeaustauscher (10), Steuermitteln bestehend aus einem Manostat (2), einem by-pass-Ventil (5), einem Sicherheitsventil und einem Differentialmanostat (3) und einem mit Aufnahmesitzen versehenen Monoblock (1) zum Verbinden von dem Dreiwegeventil (4), dem by-pass-Ventil (5), dem Sicherheitsventil, der Rohre für den Hauptwasserkreislauf (24,25,-28,29), dem sekundären Wärmeaustauscher (10) und der Steuermittel (2,3) mit dem Monoblock (1), wobei die Aufnahmesitze (50,51,52,53,54,55,57,58,59,61) zwecks Verbindung der obigen Komponenten mit dem Monoblock (1) alle um diesen Block (1) angeordnet und innen oder außen gewindegeschnitten sind, um den Schraubanschluß der obigen Komponenten mit den Aufnahmesitzen zu ermöglichen, wobei der Monoblock (1) mit einer internen Leitung (63) versehen ist, die die Aufnahmesitze (51,55,58,61) für das by-pass-Ventil (5), das Differentialmanostat (3), das Sicherheitsventil (60) und das Rücklaufrohr (29) des Hauptwasserkreislaufes untereinander verbindet.
  2. Heizkessel nach Patentanspruch 1, dadurch gekennzeichnet, daß das Differentialmanostat (3) aus einem Venturirohr (34), einem Verbindungselement (36) zum plattenartigen Wärmeaustauscher (10) und einem Verbindungselement (15A) zum Monoblock (1), die darin integriert sind, besteht.
  3. Heizkessel nach Patentanspruch 1, dadurch gekennzeichnet, daß der Monoblock (1) mit einem weiteren Sitz (62) zur Verbindung mit einem hydraulischen Speicher (21) versehen ist.
EP19940117592 1993-11-10 1994-11-08 Sehr kompakte hydraulische Baugruppe für gasbeheizte Wandkessel Expired - Lifetime EP0652408B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI930870 IT230482Y1 (it) 1993-11-10 1993-11-10 Gruppo idraulico estremamente compatto per caldaie murali a gas
ITMI930870U 1993-11-10

Publications (2)

Publication Number Publication Date
EP0652408A1 EP0652408A1 (de) 1995-05-10
EP0652408B1 true EP0652408B1 (de) 1998-04-08

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Application Number Title Priority Date Filing Date
EP19940117592 Expired - Lifetime EP0652408B1 (de) 1993-11-10 1994-11-08 Sehr kompakte hydraulische Baugruppe für gasbeheizte Wandkessel

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EP (1) EP0652408B1 (de)
ES (1) ES2117189T3 (de)
IT (1) IT230482Y1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1284431B1 (it) * 1996-03-22 1998-05-21 Fugas Srl Gruppo idraulico con pompa integrata per impianti misti di riscaldamento e acqua sanitaria
DE19632605A1 (de) * 1996-08-13 1998-02-19 Wilo Gmbh Hydraulikbaugruppe für eine kombinierte Heizwasser- und Sanitärwasseranlage
FR2755752B1 (fr) * 1996-11-08 1999-02-05 Aries Module hydraulique pour installation de chauffage central et de production d'eau chaude, et chaudiere equipee d'un tel module
EP0981031A3 (de) * 1998-08-18 2002-07-31 ALCO Corporation of Namdong Industrial Area 156BL/10LT Gerät zur Heizwasserumwaltzung und Brauchwasserheizung in einem Kombikessel
IT1302663B1 (it) 1998-10-14 2000-09-29 Bugas S R L Gruppo idraulico per impianti misti di riscaldamento e acquasanitaria provvisti di serbatoio
EP1026456A1 (de) 1999-02-03 2000-08-09 IABER S.p.A. Hydraulische Verteilergruppe
DE10007873C1 (de) * 2000-02-21 2001-06-28 Grundfos As Baueinheit für eine Kompaktheizungsanlage
NL1021594C2 (nl) 2002-10-07 2004-04-08 Nefit Buderus B V Verwarmingstoestel.
ITMI20041982A1 (it) * 2004-10-19 2005-01-19 G V Stamperie S P A "gruppo caldaia per caldaie a gas a doppia funzione e caldaia con tale gruppo"
ITMI20060751A1 (it) * 2006-04-14 2007-10-15 Fugas S P A Gruppo idraulico di ritorno per caldaie murali
KR101164717B1 (ko) * 2009-09-28 2012-07-12 주식회사 경동나비엔 믹싱밸브가 구비된 급탕열교환기 및 믹싱밸브 일체형 어댑터
DK2942583T3 (da) * 2014-05-06 2017-11-20 O T M A S N C Di Spaggiari & C En bloc-støttelegeme til en hydraulisk ventilgruppe til anvendelse i en vægmonteret kedel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595454B1 (fr) * 1986-03-07 1989-01-13 Elettro Termica Sud Spa Chaudiere a gaz

Also Published As

Publication number Publication date
ES2117189T3 (es) 1998-08-01
IT230482Y1 (it) 1999-06-07
ITMI930870V0 (it) 1993-11-10
EP0652408A1 (de) 1995-05-10
ITMI930870U1 (it) 1995-05-10

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