EP0924466B1 - Heisswassererzeuger mit Doppelmembran - Google Patents

Heisswassererzeuger mit Doppelmembran Download PDF

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Publication number
EP0924466B1
EP0924466B1 EP98403143A EP98403143A EP0924466B1 EP 0924466 B1 EP0924466 B1 EP 0924466B1 EP 98403143 A EP98403143 A EP 98403143A EP 98403143 A EP98403143 A EP 98403143A EP 0924466 B1 EP0924466 B1 EP 0924466B1
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EP
European Patent Office
Prior art keywords
chamber
hot water
cold
cold water
enclosure
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
EP98403143A
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English (en)
French (fr)
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EP0924466A1 (de
Inventor
Jean-Michel Georges Marie Porcher
Philippe Georges Marie Varin
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.)
Chaffoteaux et Maury SAS
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Chaffoteaux et Maury SAS
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Application filed by Chaffoteaux et Maury SAS filed Critical Chaffoteaux et Maury SAS
Publication of EP0924466A1 publication Critical patent/EP0924466A1/de
Application granted granted Critical
Publication of EP0924466B1 publication Critical patent/EP0924466B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/087—Regulating fuel supply conjointly with another medium, e.g. boiler water using mechanical means

Definitions

  • the present invention relates to a hot water generator.
  • the invention relates more particularly to a water generator domestic hot water.
  • the cold room of said first enclosure is filled with water Cold.
  • the burner goes out, when the generator stops after drawing off, the water present in the heat exchanger and already heated during drawing, is superheated by the heat losses of the various constituent elements of the generator.
  • the cold water stored in the cold room during the drawing is expelled into the cold water circuit while the hot water present in the exchanger is transferred to the hot chamber of the first enclosure.
  • the hot water present in the exchanger is thus replaced by cold water.
  • said first enclosure is attached to the water circuits cold and hot water, which requires, in the event of failures, to replace it in its all, including parts that should not have been changed.
  • the hot water generator allows well to control the admission of fluid fuel to the burner to the passage of water in the exchanger, but does not reduce the overheating of the water or lower the average heat exchanger temperature.
  • the object of the present invention is to resolve the drawbacks mentioned above and to propose a hot water generator allowing to decrease the overheating of the water and lower the average temperature by the exchanger, and whose intake of combustible fluid to the burner is proportional to the quantity of hot water to be supplied during a drawing, while facilitating maintenance.
  • a hot water generator of the type mentioned above and known by FR 84 012 is characterized in that said first element movable and deudéme movable element came together to form a single double element, the two enclosures being placed side by side in a closed casing made up of two half-shells mounted opposite and separated by a joint plane at which said double element is disposed, forming a deformable membrane inside each of said enclosures, said cold chamber of said first enclosure being subjected to pressure prevailing in the cold water inlet pipe upstream of said means of restriction, so that the cold room and the upstream room are simultaneously filled while the hot chamber and the downstream chamber are simultaneously emptied and vice versa.
  • the hot water generator according to the present invention therefore allows not only to decrease the overheating of the water and to lower the temperature mean of the exchanger, but also to control the fuel intake fluid to the burner as the water passes through the exchanger while facilitating the maintenance thanks to the presence of the double element.
  • the hot water generator 1 shown in FIGS. 1 and 2 comprises, in a manner known per se, a cold water inlet pipe 2 connected to a circuit cold water 3, a hot water outlet pipe 4 connected to a water circuit hot 5, a heat exchanger 6 interposed between said cold water circuit 3 and the hot water circuit 5 and a fluid fuel burner 7 which transfers heat to the heat exchanger 6.
  • the fluid fuel used here is for example natural gas which when a user draws water hot, burns forming a flame ramp 8 whose heat is used to heat the water circulating in the heat exchanger 6 placed above the burner 7.
  • Natural gas is delivered to burner 7 according to the direction of arrows F via a power supply 10 consisting of a body 11 interposed between the burner 7 and two upper 12 and lower 13 half-shells mounted in vis-a-vis.
  • each of the two half-shells 12 and 13 are opposite the halves of a first enclosure 15 and a second enclosure 16. These two enclosures are thus placed side by side.
  • Each of the enclosures is of revolution shape, the first enclosure 15 having for example a cross section elliptical while the second enclosure 16 having a substantially rectangular cross section.
  • a double element 18 is arranged forming a deformable membrane inside each of enclosures 15 and 16.
  • the double element 18 consists of a first element 19 and of a second element 20 which each take respectively the shape of a first bowl 21 and a second bowl 22.
  • These two bowls 21 and 22 are for example mounted in opposition and are tangent according to their large diameter respective. This assembly facilitates emptying the speakers 15 and 16 during maintenance operations, but as a variant, the two bowls can be mounted in phase rather than in opposition. They are molded together in a material deformable and each have a radius allowing them to come to be applied, by deformation, against the walls upper 25 and lower 26 of the first enclosure 15 and the upper 27 and lower 28 walls of the second enclosure 16 respectively.
  • each of the bowls 21 and 22 has a radial edge 29, 30 substantially annular. These two bowls are therefore tangent to the level of their radial edges 29, 30 which are located in the same plane, for example here a substantially horizontal plane, and which constitute a seal for the two half-shells 12, 13.
  • each of the radial edges 29 and 30 has a bead 31, 32 substantially perpendicular to the plane defined by said radial edges and intended to engage in two grooves formed respectively in the half-shell 12, around the enclosures 15 and 16.
  • these restriction means 34 take the form of a Venturi 35 consisting of a convergent 36, a neck 37 and a divergent 38.
  • the first movable element 19 and the second movable element 20 respectively divide the first enclosure 15 in first 40 and second 41 rooms and the second enclosure 16 in first 42 and second 43 bedrooms.
  • the first chamber 40 of the first enclosure 15 is connected to the first chamber 42 of the second enclosure 16 by a conduit 44 formed in the two half-shells 12 and 13 at the level of the zone separating said two enclosures 15 and 16.
  • the second chamber 41 of the first enclosure 15 is connected, by a conduit 45 formed in the half-shell 13, to the hot water outlet pipe 4.
  • the first chamber 42 of the second enclosure 16 is in communication with the cold water inlet pipe 2, by a conduit 46 which opens into this conduit inlet 2 upstream of the Venturi 35.
  • the second chamber 43 of the second enclosure 16 communicates with this pipe inlet 2 by a conduit 47 which opens into the neck 37 of this Venturi.
  • Sealing means 48 have come from material with the radial edge 32 of the bowl 22. These means take the shape of a ring 49 whose internal diameter is substantially equal to the diameter of the conduit 47. This ring, located in the joint plane 17, seals between the two half-shells 12 and 13 and the duct 47. As a variant, the ring 49 is attached to the radial edge 32 instead to have come of matter with this one.
  • the first chamber 40 of the first enclosure 15 is called the cold room
  • the second room 41 of this pregnant is called hot room
  • the first chamber 42 of the second enclosure 16 is called chamber upstream
  • the second chamber 43 is called the downstream chamber.
  • the upstream chamber 42 and the cold room 40 are subjected to the pressure prevailing in the cold water inlet pipe 2.
  • the room hot 41 is subject to pressure in the line hot water outlet 4 and the downstream chamber 43 is subjected at the pressure prevailing in the neck 37 of the Venturi 35.
  • the water located at the outlet pipe 4 and discharged in the direction of the arrow F 2 has suffered a pressure drop with respect to the water entering the inlet duct 2.
  • the pressure in the hot room 41 is then lower than the pressure prevailing in the cold room 40 which is itself subjected to the cold water pressure coming from the upstream chamber 42.
  • the first displaceable element 19 is therefore subjected to a pressure difference which deforms it in the direction of the wall 26 or bottom wall of the first enclosure 15.
  • the first movable element 19 is stressed by return means 50 against the difference in pressure prevailing in the first enclosure 15, these means here taking the form of a compression spring. In drawing position, the first movable element 19 is deformed towards the wall 26 by compressing this spring 50.
  • the double element 18 has a hollowed-out lobe 51 formed integrally with the edges radials 29 and 30, at their tangency zone.
  • the lobe 51 is arranged in the vicinity of the edges radial 29 and 30, taking the form of a joint.
  • the body 11 of the power supply 10 has a base 55 in which a gas inlet 56 is arranged and at from which extends a conduit 57 supplying the 7 gas burner.
  • the base 55 is fixed to the first half-shell 12, at the second enclosure 16 in which moves the second movable member 20.
  • Sealing means 58 are arranged in the supply conduit 57. These means 58 consist of a valve 59 requested to come into abutment against a valve seat 60 by a compression spring 61, this compression spring being supported on a shoulder 62 of the conduit 57 of a part, and on the valve 59 on the other hand.
  • the base 55 of the body 11 has an axial bore 65 opening out opposite a bore 66 formed in the first half-shell 12 and opening out in the middle of the wall 27 of the downstream chamber 43 of the second enclosure 16.
  • This rod is preferably made in two parts 67a and 67b mounted end to end and with play in bores 65 and 66.
  • the rod 67 thus transmits the movement of the second element movable 20 to the valve 59.
  • this movable element 20 deforms in the direction of the wall 27, the valve 59 is raised and allows the passage of gas in the supply duct 57 and therefore to the burner.
  • the body 11 of the power supply 10 further comprises an arming button 70 and an ignition assembly 71 intended to stop or commission the generator hot water 1. These elements are not part of the invention.
  • Figure 1 shows the state of the burner during drawing hot water.
  • Cold water then enters the cold water inlet pipe 2 in the direction of the arrow F 1 .
  • the depression created by the Venturi 35 causes the displacement of the second displaceable element 20 in the direction of the wall 27 of the second enclosure 16 while the pressure drop causes the movement of the first displaceable element 19 in the direction of the wall 26 of the first enclosure 15, against the compression spring 50.
  • the water flow rate requested by the user creating more or less strong depressions in each of these enclosures, the upstream chamber 42 of the second enclosure 16 thus that the cold room 40 of the first enclosure 15 respectively have a volume equal to a fraction or to the entire volume of these speakers.
  • the hot water generator 1 When the user stops drawing water, the hot water generator 1 is in the state shown in the figure 2. The quantity of incoming cold water being zero, the Venturi 35 no longer creates depression in the second pregnant 16.
  • the valve 59 is then pushed back against its seat 60 by compression spring 61, thereby closing off the inlet gas to the burner 7.
  • the hot chamber 41 and the downstream chamber 43 respectively occupy substantially the entire volume of two enclosures 15 and 16, the movable elements 19 and 20 being respectively pushed against the upper wall 25 of the first enclosure 15 and the bottom wall 28 of the second enclosure 16.
  • This movement of the two movable elements 19 and 20 causes the expulsion of the cold water initially contained in these two enclosures. Much of this water cold then circulates in cold water circuit 3 and flushes the water present in exchanger 6 which has already been heated during burner 7 operation, just before stopping the drawing. This amount of hot water is then sent through the hot water circuit 5, in the hot chamber 41 of the first enclosure 15.
  • the average heat exchanger temperature is thus lowered and the overheating of the water is reduced while having a half-shell 13 which can be removed easily generator 1 during maintenance phases, revealing the two movable elements 19 and 20 come together together and which can therefore be so easily changed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)
  • Cookers (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Claims (10)

  1. Warmwasserbereiter, welcher aufweist:
    eine mit einem Kaltwasserkreislauf (3) verbundene Kaltwassereinlaßleitung (2),
    eine mit einem Warmwasserkreislauf (5) verbundene Warmwasserauslaßleitung (4),
    einen zwischen den Kaltwasserkreislauf (3) und den Warmwasserkreislauf (5) geschalteten Wärmeaustauscher (6),
    einen Brenner (7) für Fluidbrennstoff, der Wärme zum Wärmeaustauscher (6) hin überträgt,
    eine Einrichtung (34) zum Beschränken der Kaltwassereinlaßleitung (2), welche beim Durchtritt von kaltem Wasser einen Druckunterschied zwischen der stomaufwärtigen und stromabwärtigen Seite der Beschränkungseinrichtung (34) in der Kaltwassereinlaßleitung (2) bewirkt,
    einen ersten Raum (15), der durch ein erstes verschiebbares Element (19) in eine kalte Kammer (40) und eine warme Kammer (41) unterteilt ist, wobei die kalte Kammer (40) mit der Kaltwassereinlaßleitung (2) verbunden ist und die warme Kammer (41) dem Druck unterliegt, der in der Warmwasserauslaßleitung (4) vorherrscht, wobei das erste Element (19) unter dem zwischen der kalten Kammer (40) und der warmen Kammer (41) vorliegenden Druckunterschied verschiebbar ist,
    einen zweiten Raum (16), der durch ein zweites verschiebbares Element (20) in eine stromaufwärtige Kammer (42) und eine stromabwärtige Kammer (43) unterteilt ist, wobei die stromaufwärtige Kammer (42) dem Druck unterliegt, der stromaufwärts von der Beschränkungseinrichtung (34) in der Kaltwassereinlaßleitung (2) vorherrscht, und die stromabwärtige Kammer (43) dem Druck unterliegt, der stromabwärts von der Beschränkungseinrichtung (34) in der Kaltwassereinlaßleitung (2) vorherrscht, wobei das zweite Element (20) unter dem zwischen der stromaufwärtigen Kammer (42) und der stromabwärtigen Kammer (43) vorliegenden Druckunterschied verschiebbar ist, und
    eine Versorgung (10) mit Fluidbrennstoff, welche eine Brennstoffmenge zuführt, die mittels der Verschiebungen des zweiten verschiebbaren Elements (20) in Abhängigkeit vom Durchtritt von kaltem Wasser in der Kaltwasserleitung (2) geregelt ist,
    dadurch gekennzeichnet, daß das erste verschiebbare Element (19) und das zweite verschiebbare Element (20) gemeinsam ausgeformt sind, so daß sie ein einziges Doppelelement (18) bilden, wobei die beiden Räume (15, 16) nebeneinanderliegend in einem geschlossenen Gehäuse angeordnet sind, welches aus zwei Halbschalen (12, 13) besteht, die gegenüberliegend und durch eine Trennebene (17) getrennt angebracht sind, auf deren Höhe das Doppelelement (18) angeordnet ist, welches eine verformbare Membran im Inneren eines jeden der Räume (15, 16) bildet, und wobei die kalte Kammer (40) des ersten Raums (15) dem Druck unterliegt, der in der Kaltwassereinlaßleitung (2) stromaufwärts von der Beschränkungseinrichtung (34) vorherrscht, so daß die kalte Kammer (40) und die stromaufwärtige Kammer (42) gleichzeitig befüllt werden, während die warme Kammer (41) und die stromabwärtige Kammer (43) gleichzeitig entleert werden, und umgekehrt.
  2. Warmwasserbereiter nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Räume (15, 16) rotationssymmetrisch sind und das Doppelelement (18) zwei entlang ihres Hauptdurchmessers tangente Schalen (21, 22) aufweist.
  3. Warmwasserbereiter nach Anspruch 2, dadurch gekennzeichnet, daß die beiden Schalen (21, 22) auf Mittelhöhe eines jeden Raumes (15, 16) befestigte radiale Ränder (29, 30) aufweisen und jeweils einen Radius aufweisen, der an die Abmessungen des jeweiligen Raumes (15, 16) angepaßt ist, in dem sie angeordnet sind, so daß sie an die Wände (25, 26, 27, 28) der Räume (15, 16) heranreichen.
  4. Warmwasserbereiter nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die beiden Schalen (21, 22) mit entgegengesetzter Ausrichtung angebracht sind.
  5. Warmwasserbereiter nach einem der Ansprüche 2 bis 4,
    dadurch gekennzeichnet, daß die Hauptdurchmesser der beiden Schalen (21, 22) in einer gleichen Ebene liegen.
  6. Warmwasserbereiter nach einem der Ansprüche 2 bis 5,
    dadurch gekennzeichnet, daß die Schale (21) des ersten Raums (15) durch eine Rückstelleinrichtung (50) gegen den in der Kaltwassereinlaßleitung (2) vorherrschenden Druck vorgespannt ist.
  7. Warmwasserbereiter nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, daß die kalte Kammer (40) mit der stromaufwärtigen Kammer (42) verbunden ist und die warme Kammer (41) mit der Warmwasserauslaßleitung (4) verbunden ist.
  8. Warmwasserbereiter nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet, daß er warmes Brauchwasser liefert, der Fluidbrennstoff Gas ist, und die Gasversorgung (10) in Abhängigkeit vom Durchtritt von kaltem Wasser mittels einer Stange (67) geregelt ist, von der ein erstes Ende (68) einstückig mit einer Einrichtung (58) zum Verschließen der Gasversorgung (10) ausgebildet ist, und dessen anderes Ende (69) einstückig mit dem zweiten verschiebbaren Element (20) ausgebildet ist.
  9. Warmwasserbereiter nach einem der Ansprüche 2 bis 6,
    dadurch gekennzeichnet, daß in den beiden Halbschalen (12, 13) jeweils im wesentlichen die Hälfte des ersten bzw. zweiten Raumes (15, 16) angeordnet ist, wobei die radialen Ränder (29, 30) der beiden Schalen (21, 22) eine Dichtung zwischen den beiden Halbschalen (12, 13) bilden, sowie dadurch, daß eine Lasche (51), die eine Aussparung aufweist, in der Nähe der Tangenzzone der radialen Ränder (29, 30) der beiden Räume (15, 16) angeformt ist, um die Dichtigkeit einer Passage (44) herzustellen, welche eine Verbindung der kalten Kammer (40) mit der stromaufwärtigen Kammer (42) herstellt, wobei die radialen Ränder (29, 30) des weiteren einen Wulst (31, 32) aufweisen, der dazu vorgesehen ist, sich in eine in einer (12) der Halbschalen (12, 13) vorgesehene Auskehlung einzufügen.
  10. Warmwasserbereiter nach Anspruch 9, dadurch gekennzeichnet, daß Dichtmittel (48) am radialen Rand (30) und/oder am Wulst (32) der einen (22) der beiden Schalen (21, 22) angeformt sind, um die Dichtigkeit einer Passage (47) herzustellen, welche eine Fluidverbindung zwischen der stromabwärtigen Kammer (43) und der Beschränkungseinrichtung (34) herstellt.
EP98403143A 1997-12-16 1998-12-14 Heisswassererzeuger mit Doppelmembran Expired - Lifetime EP0924466B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9715944A FR2772466B1 (fr) 1997-12-16 1997-12-16 Generateur d'eau chaude a membrane double
FR9715944 1997-12-16

Publications (2)

Publication Number Publication Date
EP0924466A1 EP0924466A1 (de) 1999-06-23
EP0924466B1 true EP0924466B1 (de) 2002-02-13

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ID=9514675

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98403143A Expired - Lifetime EP0924466B1 (de) 1997-12-16 1998-12-14 Heisswassererzeuger mit Doppelmembran

Country Status (14)

Country Link
EP (1) EP0924466B1 (de)
CN (1) CN1110657C (de)
AR (1) AR017432A1 (de)
BR (1) BR9805792A (de)
DE (1) DE69803829T2 (de)
DZ (1) DZ2672A1 (de)
ES (1) ES2172868T3 (de)
FR (1) FR2772466B1 (de)
HK (1) HK1019633A1 (de)
MA (1) MA24713A1 (de)
PT (1) PT924466E (de)
TN (1) TNSN98226A1 (de)
TR (1) TR199802600A3 (de)
TW (1) TW397914B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3691414B2 (ja) * 2001-07-05 2005-09-07 リンナイ株式会社 温水システム
CN100436906C (zh) * 2006-05-25 2008-11-26 张卫民 燃气热水器常压和超低压启动使用的水阀

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609162A1 (fr) * 1986-12-24 1988-07-01 Commissariat Energie Atomique Dispositif de controle de la surchauffe et de l'entartrage pour un appareil de chauffage d'un fluide et appareil equipe d'un tel dispositif

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR84012E (fr) * 1963-04-19 1964-11-13 Chaffoteaux Et Maury Perfectionnements apportés aux installations de chauffage à eau chaude
FR1588501A (de) * 1968-06-28 1970-04-17
JPS60138353A (ja) * 1983-12-26 1985-07-23 Paloma Ind Ltd 元止式瞬間ガス湯沸器
US5447287A (en) * 1994-06-24 1995-09-05 Robertshaw Controls Company Fuel control device and methods of making the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609162A1 (fr) * 1986-12-24 1988-07-01 Commissariat Energie Atomique Dispositif de controle de la surchauffe et de l'entartrage pour un appareil de chauffage d'un fluide et appareil equipe d'un tel dispositif

Also Published As

Publication number Publication date
TW397914B (en) 2000-07-11
DE69803829D1 (de) 2002-03-21
CN1224142A (zh) 1999-07-28
HK1019633A1 (en) 2000-02-18
TR199802600A2 (xx) 1999-07-21
DZ2672A1 (fr) 2003-03-22
DE69803829T2 (de) 2002-10-10
CN1110657C (zh) 2003-06-04
BR9805792A (pt) 1999-12-21
ES2172868T3 (es) 2002-10-01
TR199802600A3 (tr) 1999-07-21
TNSN98226A1 (fr) 2000-12-29
FR2772466B1 (fr) 2000-02-18
MA24713A1 (fr) 1999-07-01
EP0924466A1 (de) 1999-06-23
FR2772466A1 (fr) 1999-06-18
AR017432A1 (es) 2001-09-05
PT924466E (pt) 2002-07-31

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