WO1998021529A1 - Hydraulic module for central heating installation - Google Patents

Hydraulic module for central heating installation Download PDF

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Publication number
WO1998021529A1
WO1998021529A1 PCT/FR1997/002000 FR9702000W WO9821529A1 WO 1998021529 A1 WO1998021529 A1 WO 1998021529A1 FR 9702000 W FR9702000 W FR 9702000W WO 9821529 A1 WO9821529 A1 WO 9821529A1
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WO
WIPO (PCT)
Prior art keywords
base
path
module according
circuit
way valve
Prior art date
Application number
PCT/FR1997/002000
Other languages
French (fr)
Inventor
Frédéric VERGNE
Original Assignee
Vergne Innovation
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
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Application filed by Vergne Innovation filed Critical Vergne Innovation
Priority to AU50582/98A priority Critical patent/AU5058298A/en
Publication of WO1998021529A1 publication Critical patent/WO1998021529A1/en

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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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0682—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid with an articulated or pivot armature
    • 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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • 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 
    • 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 
    • F24H9/148—Arrangements of boiler components on a frame or within a casing to build the fluid heater, e.g. boiler

Definitions

  • the present invention relates to a hydraulic module providing exchange, distribution and connection functions for a central heating installation and hot water production.
  • the present invention also relates to a boiler equipped with such a module.
  • EP-A-0 236 235 discloses an integrated boiler of the type targeted by the invention.
  • One of the essential components of this boiler is a distribution, exchange and adjustment base on which almost all of the functional parts of the boiler are grafted. These are in particular the switching elements between the "central heating” mode and the "domestic hot water production” mode, components for regulating the fuel flow, the pump, various detectors, and a heat exchanger intended to heat domestic water from water, belonging to a separate circuit, passing through a combustion chamber of the boiler.
  • the base has internal passages ensuring the various necessary connections between all these components as well as with the inlet and outlet orifices of the various fluids concerned.
  • This base considerably simplifies the assembly and maintenance of the boiler when the latter is of a type well determined in advance, in particular as regards the nature of the fuel used.
  • the base constitutes an expensive foundry piece because it is complex.
  • Several models of this base may be necessary to make a range of boilers, depending for example on their power or the fuel used.
  • the purpose of the present invention and to provide a hydraulic module which is less expensive and more flexible to use than the known base, provided with its associated components.
  • the present invention also aims to provide a boiler incorporating such a module.
  • the hydraulic module for central heating and hot water production installation comprising a base having:
  • a heating circuit comprising at least one heating device such as a radiator
  • the base carrying: a circulation pump, a valve three-way selectively defining a first and a second flow path, and a heat exchanger having a heat emitting path and a heat receiving path operatively mounted between the two ports of the sanitary circuit, the two ports of the heating circuit being connected to internal passages in the base so that in service the heating circuit is mounted in series with the pump and the first path of the three-way valve between the two orifices of the boiler circuit, and the heat emitting path of the heat exchanger being mounted in series with the pump and said second flow path of the three-way valve between the two orifices of the boiler circuit, is characterized in that the heat exchanger has an elongation direction parallel to that of the base and the circulation pump is placed on the base beyond one end of the length of the heat exchanger.
  • a base of markedly reduced format for example typically two times smaller on the surface, and also less thick, than the known base.
  • the components which are associated with the base are selected to form the module and those which it is acceptable to place outside the module.
  • the base is completely free of conduits or other means containing fuel.
  • the module operates independently of the fuel used by the boiler, whether it is a specific quality of gas or whether it is fuel oil.
  • the module does not have any dynamic type sealing involved in the operation of the module's automatic systems.
  • dynamic sealing is meant, conventionally, a sealing in which there is relative sliding movement between a sealing surface and a sealing member pressing on it.
  • the three-way valve preferably comprises a movable shutter between two opposite seats each cooperating with one of the faces of the shutter, which is mounted at one end of an oscillating lever whose other end is connected to control means, while a geometric axis of oscillation of the lever is located between the two ends, substantially in the plane of a membrane in which the lever is tightly fitted.
  • means such as return means, apply to the shutter of the three-way valve a limited force keeping the shutter in the position closing the second flow path of the valve to three-way, which is mounted between the return port of the heating circuit and the start port of the boiler circuit.
  • the shutter moves under the effect of the pressure difference, against of the aforementioned limited force and an additional flow becomes possible through the emitting path of the heat exchanger.
  • the domestic water heating path is activated even in the absence of domestic hot water withdrawal when the pressure rises excessively, and the flow decreases excessively, due to a total or near-total shutdown of all or almost all of the heating radiators. This improves the overall operation of the installation.
  • Known installations have an additional disadvantage in summer. After a domestic hot water withdrawal by a user, the three-way valve automatically returns to its rest position corresponding to the switching on of the central heating. But the combustion chamber does not cool immediately, and it then starts to feed a thermosyphon which causes an undesired rise in temperature in certain radiators placed in the high position in the central heating installation.
  • the invention remedies this defect by proposing means to delay the re-establishment of the first path - or "central heating" path - of the three-way valve after the water flow has disappeared when the installation has been placed, for example by means of a switch, in a "summer" position.
  • the delay may be of a predetermined duration.
  • Another possibility is to delay the re-establishment of the "central heating" path of the three-way valve until the temperature at the outlet of the combustion chamber drops below a predetermined value.
  • the invention also relates to a boiler equipped with a module according to the first aspect, and comprising a combustion chamber traversed by a hydraulic path connected by each of these ends to one of the orifices of the boiler circuit, and means for supplying fuel connected to a burner heating the hydraulic path in the combustion chamber.
  • FIG. 1 is a schematic front view of a gas boiler according to the invention
  • FIG. 1 is a schematic profile view of the boiler of Figure 1;
  • FIG. 3 is a schematic view of a heating and domestic hot water production circuit implementing the module according to the invention, for example in a boiler according to Figures 1 and 2;
  • - Figure 4 is a front view of the module 1 according to the invention;
  • - Figure 8 is a front view of the base; and - Figure 9 is a view of the base sectioned in a plane substantially parallel to its front and rear faces.
  • the boiler of wall type, comprises a vertical frame 1 in the form of a box supporting a parallelepipedic housing 2, the whole being only briefly shown.
  • the frame 1 supports a burner 3 surmounted by a combustion chamber 4 including a combustion gas / water exchanger 6 surmounted by a combustion gas extractor 7.
  • the "water" path 8 (FIG. 1) of the exchanger 7 is mounted between two water conduits 9 and 11 which are connected to two respective boiler circuit orifices 12 and 13 placed at the two opposite ends of the upper edge of a base 14 belonging to a hydraulic module 16 grouping the distribution exchange and hydraulic connection functions.
  • the base 14 has a generally planar rectangular shape and it is arranged in a vertical plane at the base of the boiler in front of the vertical frame 1.
  • the boiler circuit 8, 9, 11 is also connected to an expansion tank 10 (figure 2) located at the top of box 1.
  • the boiler also comprises, separately from the module 16 and in particular from the base 14, gas supply means for the burner 3, which in particular comprise a supply duct 17 and a device 18 called a "gas valve" ", all located in the vertical frame.
  • the base 14 has on its rear face an alignment of four connection holes of the boiler and in particular of the module 16 with the central heating installation and sanitary water distribution.
  • the two extreme orifices are an orifice 19 for the return of the central heating circuit 21 and respectively an orifice 22 for the start of this same circuit 21.
  • the orifice 19 is near the same end of the base as the orifice 12 for departure of the boiler circuit 8, 9, 11, and the orifice 22 is close to the same end of the base 14 as the orifice 13 of return of the boiler circuit 8, 9, 11.
  • the circuit 21 includes heating radiators 23 hydraulically mounted in parallel between the orifices 19 and 22. Between the orifices 19 and 22 are disposed a domestic cold water inlet orifice 24, adjacent to the orifice 19 for return of the circuit heating, and a domestic hot water outlet 26 adjacent to the outlet 22 of the heating circuit.
  • the sanitary cold water inlet orifice 24 is connected to a cold water inlet illustrated by a water meter 27, and to the cold water installation illustrated by a cold water tap 28.
  • L the domestic hot water outlet 26 is connected to the domestic hot water distribution installation illustrated by a hot water tap 29.
  • Stop valves 31, each associated with one of the orifices 19, 22, 24, 26, are mounted along the lower edge 34 of the base 14.
  • a stop valve 31 is illustrated for example in FIG. 6 in connection with the orifice 19.
  • the body of the valve is defined by the wall of a cavity 32 formed in the base 14.
  • a valve mechanism 33 is fixed in a hole making the cavity 32 communicate with the outside at through the lower edge 34 of the base 14.
  • the mechanism 33 carries a rotary control rod 36 whose one end inside the cavity 32 carries a movable shutter 37 cooperating with a seat 38 through which the cavity 32 communicates with an internal passage 39 of the base 14.
  • the base 14 defines different internal passages, such as the passage 39 which has just been described, and cavities such as the cavity 32 also described above.
  • An internal passage 41 communicates the opening 13 of the boiler circuit with the opening 22 of the heating circuit, passing through a connection point 42 with one of the inputs of a heat exchanger 43 which is illustrated by two crossed arrows in the figure 3.
  • the return port 19 of the heating circuit communicates with the opening 12 of the boiler circuit via a first path 46-56 of a three-way valve 44 and, between the common access 46 thereof and the orifice 12 , a pump - or circulator -47.
  • heating water operates in a closed circuit, thanks to the pump 47 between the exchanger 8, the conduit 11, the orifice 13, the passage 41, the orifice 22, the radiators 23, the heating return orifice 19, the first path 46-56 of the three-way valve 44, the pump 47, the starting point of the boiler circuit 12 and the conduit 9.
  • the opening 26 of the domestic hot water circuit is connected by an internal passage 48 of the base with an exit point 49 of the exchanger 43 located at the downstream end of a heat receiving path 51 of the exchanger 43, the entry point 52 of which is connected to the entry orifice 24 by means of a flow detector 53.
  • the flow detector supplies an electrical signal via a line 54 which is used to control the valve three-way 44 for, in the event of a flow in the domestic hot water circuit, pass the valve 44 from the rest position which has been described above to a position where the first path - or "central heating" path - of this valve, between accesses 46 and 56, is interrupted while a second path - or "domestic hot water production" path - of the valve, between common access 46 and a second selective access 57, is established by so as to connect the common access 46 and therefore the inlet of the pump 4 7 with the downstream end 58 of the heat emitting path 59 of the exchanger 43.
  • the heating water circulates in a closed circuit through the exchanger 8, the conduit 11, the orifice 13 of the boiler circuit return, the passage 41, the heat emitting path 59 of the exchanger 43, the “domestic hot water production” path 57-46 of the three-way valve 44, the pump 47, the opening 12 of the boiler circuit and the conduit 9.
  • the water no longer circulates through the central heating circuit 21 because the three-way valve 44 interrupts this circuit.
  • the signal supplied by the flow detector 53 is transmitted to the three-way valve 44 via a summer-winter switch 61. In the winter position shown, the switch 61 directly transmits the signal from the detector 53 to the valve 44, so that as soon as the flow in the domestic hot water circuit disappears, the three-way valve 44 returns to the rest position shown in FIG. 3.
  • the switch 61 When the switch 61 is in the summer position, the signal from the domestic hot water flow detector 53 is modified by a stage 62 which is connected to a temperature probe 63 exposed to the heating water arriving through the orifice 13.
  • the stage 62 has the function of extending the signal sent to the three-way valve 44 after the disappearance of the domestic hot water flow as long as the temperature at the outlet of the combustion chamber 8 remains above a certain threshold, for example example 30 ° C.
  • a certain threshold for example example 30 ° C.
  • the signal provided by the temperature probe 63 also serves to control the gas valve 18, in a known manner which in itself is not part of the invention.
  • the distribution components are entirely housed in the base while the electrical and / or thermal function components are fixed on the front face of the base, therefore on the face opposite to the orifices 19, 22, 24, 26.
  • the pump 47 (FIGS. 4 and 5) is thus fixed in leaktight manner on an appropriate surface of the base.
  • the suction space 66 of the pump communicates with a cavity 67 of the base 14 ( Figures 5 and 9) leading to the common access 46 of the three-way valve.
  • the discharge space 68 of the pump 47 communicates with a cavity 69 of the base 14 connected to the orifice 12 at the start of the boiler circuit.
  • the heat exchanger 43 is a plate exchanger suitably fixed on the front face of the base 14.
  • FIG. 8 shows that the four connections 42, 49, 52, 58 of the exchanger 43 are made in the form of orifices suitably positioned through the front face of the base. These orifices communicate in leaktight manner with corresponding orifices (not shown) provided on the bearing face of the heat exchanger 43.
  • FIG. 8 also illustrates, through the front face of the base, the mounting hole 71 for the temperature probe 63 as well as a mounting hole 72, also opening into the passage 41, for the safety valve of the heating circuit 73 ( Figures 4 and 5).
  • the three-way valve 44 This comprises a shutter 74 which is movable in a cavity 76 of the base 14 between two opposite seats which constitute one selective access 56 and the other selective access 57.
  • the shutter 74 is mounted at the end of an oscillating lever 77, the other end 78 of which is subjected to the action of an actuator 79 comprising a return spring 81 permanently tending to return the lever 77 to the position in which the shutter 74 closes the second port 57 and opens the first port 56 to achieve the "central heating" operating mode.
  • the actuator 79 also comprises an electromagnet 82 which, when excited by the signal produced by the domestic water flow detector 53, causes the lever 77 to tilt, against the action of the return spring 81, in the position in which the first access 56 is closed and the second access 57 is open, to carry out the "domestic hot water drawing" operation.
  • This overpressure is transmitted to the second access 57 via the heat emitter path 59 of the exchanger.
  • the spring 81 is produced in the form of a calibrated spring which allows the detachment of the shutter 74 relative to the seat constituting the second port 57 when the pressure in the second port 57 exceeds a certain threshold.
  • the actuator 79 as an electrical function component, is fixed to the front face of the base 14, externally to the latter.
  • the lever 77 passes from the interior of the actuator 77 to the interior of the cavity 76 through a sealing membrane 83 which seals the cavity 76 by being pinched on its entire periphery between two corresponding surfaces of the 'base 14 and the housing of one actuator 79.
  • the membrane 83 has a part 84 in the form of a thermowell which completely sheaths the lever 77 on the side of the cavity 76.
  • the part 84 forms at its end the shutter 74 comprising two opposite faces 86 intended to cooperate each in a sealed manner with a respective one of the seats 56 and 57.
  • Lever 74 oscillates around an axis geometric substantially located at 87, perpendicular to the plane of Figure 6, and in the plane of the membrane 83.
  • the two faces 86 of the shutter 74 form a slight angle relative to one another so that each is capable to rest flat on its respective seat despite the angle of oscillation of the lever 77 between its two extreme positions.
  • This device comprises a mobile 88 of triangular section (in a horizontal plane perpendicular to the plane of FIG. 7) mounted to slide in a vertical cavity 89 of the base 14.
  • the mobile 88 carries at its upper end a magnetic zone 91 capable of influence a Hall sensor 92 mounted in leaktight manner through the front face of the base 14.
  • the mobile 88 falls into the position shown in FIG. 7 by pressing on a stop 90 permeable to the flow coming from the orifice 24 for the arrival of sanitary cold water.
  • the hydraulic friction drives the mobile 88 upwards, which influences the Hall sensor 92 which in turn delivers the signal controlling the permutation of the three-way valve 44.
  • a degasser 96 is tightly fixed in an orifice 97 provided for this purpose at the top of the base in communication with the cavity 67.
  • the heat exchanger 43 has a generally quasi-rectangular shape with a direction of horizontal elongation and parallel to the direction of elongation of the base 14.
  • the pump 47 is arranged beyond one of the ends of the length of the exchanger 43.
  • the width of the exchanger 43 and the diameter of the pump 47 correspond approximately to the width (vertical) of the base 14.
  • the domestic hot water flow detector 53 and the three-way valve 44 are arranged one next to the other in a generally vertical orientation, that is to say parallel to the width of the base 14 and of the exchanger 43.
  • the base 14 can for example have a length less than 500 mm and a width less than a quarter of its length.
  • the base 14 is made in the form of a bronze or brass foundry piece or even a piece of injected plastic.
  • a plastic material can be glass-filled polyamide 6-6, molded according to the technique known as fusible cores, according to which the molding cores are removed by fusion in hot water.
  • the internal cavities of the base 14 according to the invention need not overlap anywhere.
  • the base is thus achievable by welding one against the other two sheets each suitably shaped, the welds being made along the contact lines corresponding on the one hand to the periphery of the base and on the other hand along the separation lines of the different cavities. Connections to the outside are, if necessary, made by welding added parts, serving for example as a support plate for the added components, or inlet and outlet orifices.
  • the base is integrated in a boiler, but the module according to the invention can also be produced in the form of a separate module located at a distance from the boiler.

Abstract

The boiler comprises a burner (3) topped by a combustion chamber (4) run through by a water heating conduit (8) and topped by an extractor (7). A hydraulic seat (14) supports a pump (47), a three-way valve (44), a domestic water flow rate sensor (92); and a heating water-domestic water exchanger (43). The exchanger (43) is arranged along the longitudinal direction of the seat (14). The pump (47) is set beyond one of the ends of the exchanger. The valve (44) and the sensor (53) are vertically oriented between these two. The fuel supplying components (17, 18) are separated from the seat (14). The invention is useful for reducing the cost of the seat and for standardising it for several types of boilers.

Description

MODULE HYDRAULIQUE POUR INSTALLATION DE CHAUFFAGE CENTRAL HYDRAULIC MODULE FOR CENTRAL HEATING SYSTEM
DESCRIPTION La présente invention concerne un module hydraulique assurant des fonctions d'échange, de distribution et de raccordement pour une installation de chauffage central et de production d'eau chaude.DESCRIPTION The present invention relates to a hydraulic module providing exchange, distribution and connection functions for a central heating installation and hot water production.
La présente invention concerne également une chaudière équipée d'un tel module.The present invention also relates to a boiler equipped with such a module.
On connaît d'après le EP-A-0 236 235 une chaudière intégrée du genre visé par l'invention. L'un des composants essentiels de cette chaudière est une embase de distribution, d'échange et de réglage sur laquelle se greffent la quasi-totalité des organes fonctionnels de la chaudière. Il s'agit en particulier des organes de commutation entre le mode "chauffage central" et le mode "production d'eau chaude sanitaire", des composants de régulation du débit de combustible, de la pompe, de divers détecteurs, et d'un échangeur de chaleur destiné à chauffer l'eau sanitaire à partir de l'eau, appartenant à un circuit distinct, passant dans une chambre de combustion de la chaudière. L'embase comporte des passages internes assurant les différents raccordements nécessaires entre tous ces composants ainsi qu'avec les orifices d'entrée et de sortie des différents fluides concernés.EP-A-0 236 235 discloses an integrated boiler of the type targeted by the invention. One of the essential components of this boiler is a distribution, exchange and adjustment base on which almost all of the functional parts of the boiler are grafted. These are in particular the switching elements between the "central heating" mode and the "domestic hot water production" mode, components for regulating the fuel flow, the pump, various detectors, and a heat exchanger intended to heat domestic water from water, belonging to a separate circuit, passing through a combustion chamber of the boiler. The base has internal passages ensuring the various necessary connections between all these components as well as with the inlet and outlet orifices of the various fluids concerned.
Cette embase simplifie considérablement le montage et l'entretien de la chaudière lorsque celle-ci est d'un type bien déterminé à l'avance, en particulier en ce qui concerne la nature du combustible utilisé. Par contre, l'embase constitue une pièce de fonderie coûteuse, car complexe. Plusieurs modèles de cette embase peuvent être nécessaires pour réaliser une gamme de chaudières, en fonction par exemple de leur puissance ou encore du combustible utilisé. Le but de la présente invention et de proposer un module hydraulique qui soit moins coûteux et plus souple d'emploi que l'embase connue, munie de ses composants associés. La présente invention a également pour but de proposer une chaudière intégrant un tel module.This base considerably simplifies the assembly and maintenance of the boiler when the latter is of a type well determined in advance, in particular as regards the nature of the fuel used. On the other hand, the base constitutes an expensive foundry piece because it is complex. Several models of this base may be necessary to make a range of boilers, depending for example on their power or the fuel used. The purpose of the present invention and to provide a hydraulic module which is less expensive and more flexible to use than the known base, provided with its associated components. The present invention also aims to provide a boiler incorporating such a module.
Suivant un premier aspect de l'invention, le module hydraulique pour installation de chauffage central et de production d'eau chaude, comprenant une embase ayant:According to a first aspect of the invention, the hydraulic module for central heating and hot water production installation, comprising a base having:
- deux orifices de circuit chaudière destinés à recevoir entre eux, un trajet hydraulique passant par une chambre de combustion,- two boiler circuit orifices intended to receive between them, a hydraulic path passing through a combustion chamber,
- deux orifices de circuit sanitaire, constituant l'un un orifice d'arrivée d'eau froide sanitaire et l'autre un orifice de départ d'eau chaude sanitaire,- two orifices of the sanitary circuit, one constituting a sanitary cold water inlet orifice and the other a sanitary hot water outlet orifice,
- un orifice de départ et un orifice de retour de circuit de chauffage, destinés à recevoir fonctionnellement entre eux un circuit de chauffage comprenant au moins un appareil de chauffage tel qu'un radiateur, l'embase portant: une pompe de circulation, une vanne à trois voies définissant sélectivement un premier et une deuxième trajet d'écoulement, et un échangeur de chaleur ayant un trajet émetteur de chaleur et un trajet récepteur de chaleur monté fonctionnellement entre les deux orifices de circuit sanitaire, les deux orifices de circuit chauffage étant reliés à des passages internes dans l'embase de façon qu'en service le circuit de chauffage soit monté en série avec la pompe et le premier trajet de la vanne à trois voies entre les deux orifices de circuit chaudière, et le trajet émetteur de chaleur de l'échangeur de chaleur étant monté en série avec la pompe et ledit deuxième trajet d'écoulement de la vanne à trois voies entre les deux orifices de circuit chaudière, est caractérisé en ce que l'échangeur de chaleur a une direction d'allongement parallèle à celle de l'embase et la pompe de circulation est placée sur l'embase au-delà de l'une des extrémités de la longueur de l'échangeur de chaleur.a starting orifice and a heating circuit return orifice, intended to functionally receive between them a heating circuit comprising at least one heating device such as a radiator, the base carrying: a circulation pump, a valve three-way selectively defining a first and a second flow path, and a heat exchanger having a heat emitting path and a heat receiving path operatively mounted between the two ports of the sanitary circuit, the two ports of the heating circuit being connected to internal passages in the base so that in service the heating circuit is mounted in series with the pump and the first path of the three-way valve between the two orifices of the boiler circuit, and the heat emitting path of the heat exchanger being mounted in series with the pump and said second flow path of the three-way valve between the two orifices of the boiler circuit, is characterized in that the heat exchanger has an elongation direction parallel to that of the base and the circulation pump is placed on the base beyond one end of the length of the heat exchanger.
Ainsi, selon l'invention, on réalise une embase de format nettement réduit, par exemple typiquement deux fois plus petite en surface, et en outre moins épaisse, que l'embase connue. Selon l'invention, on sélectionne les composants qui sont associés à l'embase pour former le module et ceux que l'on admet de placer extérieurement au module. En particulier, selon une particularité préférentielle de l'invention, l'embase est totalement exempte de conduits ou autres moyens contenant du combustible. Ainsi, le module fonctionne indépendamment du combustible utilisé par la chaudière, qu'il s'agisse d'une qualité déterminée de gaz ou qu'il s'agisse de fioul.Thus, according to the invention, there is provided a base of markedly reduced format, for example typically two times smaller on the surface, and also less thick, than the known base. According to the invention, the components which are associated with the base are selected to form the module and those which it is acceptable to place outside the module. In particular, according to a preferred feature of the invention, the base is completely free of conduits or other means containing fuel. Thus, the module operates independently of the fuel used by the boiler, whether it is a specific quality of gas or whether it is fuel oil.
Selon une particularité ayant son intérêt propre, le module ne comporte aucune étanchéité de type dynamique intervenant dans le fonctionnement des automatismes du module. Par "étanchéité dynamique" on entend, de manière classique, une étanchéité dans laquelle il y a mouvement relatif de glissement entre une surface d' étanchéité et un organe d' étanchéité s ' appuyant sur elle. En particulier, la vanne à trois voies comprend de préférence un obturateur mobile entre deux sièges opposés coopérant chacun avec l'une des faces de l'obturateur, lequel est monté à une extrémité d'un levier oscillant dont l'autre extrémité est raccordée à des moyens de commande, tandis qu'un axe géométrique d'oscillation du levier est situé entre les deux extrémités, sensiblement dans le plan d'une membrane dans laquelle le levier est emmanché de manière étanche. Lorsque le levier oscille pour établir l'un des trajets et interrompre l'autre trajet de la vanne à trois voies, la membrane se déforme sans qu'il y ait de mouvement relatif entre le levier et la région de la membrane qui est en contact avec le levier.According to a feature having its own interest, the module does not have any dynamic type sealing involved in the operation of the module's automatic systems. By "dynamic sealing" is meant, conventionally, a sealing in which there is relative sliding movement between a sealing surface and a sealing member pressing on it. In particular, the three-way valve preferably comprises a movable shutter between two opposite seats each cooperating with one of the faces of the shutter, which is mounted at one end of an oscillating lever whose other end is connected to control means, while a geometric axis of oscillation of the lever is located between the two ends, substantially in the plane of a membrane in which the lever is tightly fitted. When the lever oscillates to establish one of the paths and interrupt the other path of the three-way valve, the membrane deforms without there being any relative movement between the lever and the region of the membrane which is in contact with the lever.
Dans les installations connues, en fonctionnement "chauffage central", le débit d'eau peut diminuer très fortement si tous les radiateurs sont fermés ou quasi- fermés simultanément. Ceci peut se produire de manière fortuite si les radiateurs sont équipés de thermostats . Une telle réduction de débit est néfaste au bon fonctionnement de la chaudière et des automatismes qui lui sont associés.In known installations, in "central heating" operation, the water flow rate can decrease very sharply if all the radiators are closed or almost closed simultaneously. This can happen by chance if the radiators are fitted with thermostats. Such a reduction in flow is detrimental to the proper functioning of the boiler and the automatic systems associated with it.
Selon une autre particularité présentant un intérêt spécifique, des moyens, tels que des moyens de rappel, appliquent à l'obturateur de la vanne à trois voies un effort limité maintenant l'obturateur en position fermant le deuxième trajet d'écoulement de la vanne à trois voies, laquelle est montée entre l'orifice de retour du circuit de chauffage et l'orifice de départ du circuit chaudière. Au-delà d'une différence de pression prédéterminée entre le trajet émetteur de chaleur de l'échangeur et l'orifice de retour du circuit de chauffage, l'obturateur se déplace sous l'effet de la différence de pression, à l' encontre de l'effort limité précité et un débit supplémentaire devient possible à travers le trajet émetteur de l'échangeur de chaleur.According to another particular feature of specific interest, means, such as return means, apply to the shutter of the three-way valve a limited force keeping the shutter in the position closing the second flow path of the valve to three-way, which is mounted between the return port of the heating circuit and the start port of the boiler circuit. Beyond a predetermined pressure difference between the heat emitting path of the exchanger and the return orifice of the heating circuit, the shutter moves under the effect of the pressure difference, against of the aforementioned limited force and an additional flow becomes possible through the emitting path of the heat exchanger.
Ainsi quand le module alimente le circuit de chauffage central, le trajet de chauffage de l'eau sanitaire s'active même en l'absence de prélèvement d'eau chaude sanitaire lorsque la pression monte excessivement, et le débit diminue excessivement, en raison d'une fermeture totale ou quasi-totale de tous ou presque tous les radiateurs de chauffage. Ceci améliore le fonctionnement global de l'installation. Les installations connues présentent un inconvénient supplémentaire en été. Après un prélèvement d'eau chaude sanitaire par un utilisateur, la vanne à trois voies revient automatiquement dans sa position de repos correspondant à la mise en circuit du chauffage central. Mais la chambre de combustion ne refroidit pas immédiatement, et elle se met alors à alimenter un thermosiphon qui provoque une élévation de température indésirée dans certains radiateurs placés en position haute dans l'installation de chauffage central.So when the module feeds the central heating circuit, the domestic water heating path is activated even in the absence of domestic hot water withdrawal when the pressure rises excessively, and the flow decreases excessively, due to a total or near-total shutdown of all or almost all of the heating radiators. This improves the overall operation of the installation. Known installations have an additional disadvantage in summer. After a domestic hot water withdrawal by a user, the three-way valve automatically returns to its rest position corresponding to the switching on of the central heating. But the combustion chamber does not cool immediately, and it then starts to feed a thermosyphon which causes an undesired rise in temperature in certain radiators placed in the high position in the central heating installation.
Selon une particularité ayant elle aussi son intérêt spécifique, l'invention remédie à ce défaut en proposant des moyens pour retarder le rétablissement du premier trajet -ou trajet "chauffage central"- de la vanne à trois voies après la disparition du débit d'eau sanitaire lorsque l'installation a été placée, par exemple grâce à un commutateur, dans une position "été". Le retard peut être d'une durée prédéterminée. Une autre possibilité consiste à retarder le rétablissement du trajet "chauffage central" de la vanne à trois voies jusqu'à ce que la température à la sortie de la chambre de combustion passe au-dessous d'une valeur prédéterminée.According to a feature which also has its specific interest, the invention remedies this defect by proposing means to delay the re-establishment of the first path - or "central heating" path - of the three-way valve after the water flow has disappeared when the installation has been placed, for example by means of a switch, in a "summer" position. The delay may be of a predetermined duration. Another possibility is to delay the re-establishment of the "central heating" path of the three-way valve until the temperature at the outlet of the combustion chamber drops below a predetermined value.
Selon son second aspect, l'invention concerne également une chaudière équipée d'un module selon le premier aspect, et comprenant une chambre de combustion traversée par un trajet hydraulique raccordé par chacune des ces extrémités à l'un des orifices du circuit chaudière, et des moyens d'alimentation en combustible reliés à un brûleur chauffant le trajet hydraulique dans la chambre de combustion.According to its second aspect, the invention also relates to a boiler equipped with a module according to the first aspect, and comprising a combustion chamber traversed by a hydraulic path connected by each of these ends to one of the orifices of the boiler circuit, and means for supplying fuel connected to a burner heating the hydraulic path in the combustion chamber.
D'autres particularités et avantages de l'invention ressortiront encore de la description ci-après, relative à un exemple non limitatif. Aux dessins annexés:Other features and advantages of the invention will emerge from the description below, relating to a non-limiting example. In the accompanying drawings:
- la figure 1 est une vue schématique de face d'une chaudière à gaz selon l'invention;- Figure 1 is a schematic front view of a gas boiler according to the invention;
- la figure 2 est une vue schématique de profil de la chaudière de la figure 1;- Figure 2 is a schematic profile view of the boiler of Figure 1;
- la figure 3 est une vue schématique d'un circuit de chauffage et de production d'eau chaude sanitaire mettant en œuvre le module selon l'invention, par exemple dans une chaudière selon les figures 1 et 2; - la figure 4 est une vue de face du module selon 1 ' invention;- Figure 3 is a schematic view of a heating and domestic hot water production circuit implementing the module according to the invention, for example in a boiler according to Figures 1 and 2; - Figure 4 is a front view of the module 1 according to the invention;
- les figures 5 à 7 sont des coupes selon V-V, VI- VI et respectivement VII-VII de la figure 4;- Figures 5 to 7 are sections along V-V, VI-VI and respectively VII-VII of Figure 4;
- la figure 8 est une vue de face de l'embase; et - la figure 9 est une vue de l'embase en coupe dans un plan sensiblement parallèle à ses faces avant et arrière .- Figure 8 is a front view of the base; and - Figure 9 is a view of the base sectioned in a plane substantially parallel to its front and rear faces.
Dans l'exemple représenté aux figures 1 et 2, la chaudière, de type mural, comprend un bâti vertical 1 en forme de caisson supportant un boîtier parallélépipèdique 2, le tout n'étant que sommairement représenté. Le bâti 1 supporte un brûleur 3 surmonté par une chambre de combustion 4 incluant un échangeur gaz de combustion/eau 6 surmonté par un extracteur de gaz de combustion 7. Le trajet "eau" 8 (figure 1) de l'échangeur 7 est monté entre deux conduits d'eau 9 et 11 qui sont raccordés à deux orifices de circuit chaudière respectifs 12 et 13 placés aux deux extrémités opposées du bord supérieur d'une embase 14 appartenant à un module hydraulique 16 regroupant les fonctions d'échange de distribution et de raccordement hydraulique. L'embase 14 a une forme générale plane rectangulaire et elle est disposée dans un plan vertical à la base de la chaudière en avant du bâti vertical 1. Le circuit chaudière 8, 9, 11 est par ailleurs raccordé à un vase d'expansion 10 (figure 2) situé dans le haut du caisson 1.In the example represented in FIGS. 1 and 2, the boiler, of wall type, comprises a vertical frame 1 in the form of a box supporting a parallelepipedic housing 2, the whole being only briefly shown. The frame 1 supports a burner 3 surmounted by a combustion chamber 4 including a combustion gas / water exchanger 6 surmounted by a combustion gas extractor 7. The "water" path 8 (FIG. 1) of the exchanger 7 is mounted between two water conduits 9 and 11 which are connected to two respective boiler circuit orifices 12 and 13 placed at the two opposite ends of the upper edge of a base 14 belonging to a hydraulic module 16 grouping the distribution exchange and hydraulic connection functions. The base 14 has a generally planar rectangular shape and it is arranged in a vertical plane at the base of the boiler in front of the vertical frame 1. The boiler circuit 8, 9, 11 is also connected to an expansion tank 10 (figure 2) located at the top of box 1.
La chaudière comprend encore, de manière séparée du module 16 et en particulier de l'embase 14, des moyens d'alimentation en gaz pour le brûleur 3, qui comprennent en particulier un conduit d'alimentation 17 et un dispositif 18 appelé "valve gaz", le tout situé dans le bâti vertical. Comme le montre la figure 3, l'embase 14 comporte sur sa face arrière un alignement de quatre orifices de raccordement de la chaudière et en particulier du module 16 avec l'installation de chauffage central et de distribution d'eau sanitaire. Les deux orifices extrêmes sont un orifice 19 de retour du circuit de chauffage central 21 et respectivement un orifice 22 de départ de ce même circuit 21. L'orifice 19 est voisin de la même extrémité de l'embase que l'orifice 12 de départ du circuit chaudière 8, 9, 11, et l'orifice 22 est voisin de la même extrémité de l'embase 14 que l'orifice 13 de retour du circuit chaudière 8, 9, 11.The boiler also comprises, separately from the module 16 and in particular from the base 14, gas supply means for the burner 3, which in particular comprise a supply duct 17 and a device 18 called a "gas valve" ", all located in the vertical frame. As shown in Figure 3, the base 14 has on its rear face an alignment of four connection holes of the boiler and in particular of the module 16 with the central heating installation and sanitary water distribution. The two extreme orifices are an orifice 19 for the return of the central heating circuit 21 and respectively an orifice 22 for the start of this same circuit 21. The orifice 19 is near the same end of the base as the orifice 12 for departure of the boiler circuit 8, 9, 11, and the orifice 22 is close to the same end of the base 14 as the orifice 13 of return of the boiler circuit 8, 9, 11.
Le circuit 21 comprend des radiateurs de chauffage 23 montés hydrauliquement en parallèle entre les orifices 19 et 22. Entre les orifices 19 et 22 sont disposés un orifice d'arrivée d'eau froide sanitaire 24, voisin de l'orifice 19 de retour du circuit de chauffage, et un orifice de départ d'eau chaude sanitaire 26 voisin de l'orifice 22 de départ du circuit de chauffage. L'orifice d'arrivée d'eau froide sanitaire 24 est raccordé à une arrivée d'eau froide illustrée par un compteur d'eau 27, et à l'installation d'eau froide illustrée par un robinet d'eau froide 28. L'orifice de départ d'eau chaude sanitaire 26 est raccordé à l'installation de distribution d'eau chaude sanitaire illustrée par un robinet d'eau chaude 29.The circuit 21 includes heating radiators 23 hydraulically mounted in parallel between the orifices 19 and 22. Between the orifices 19 and 22 are disposed a domestic cold water inlet orifice 24, adjacent to the orifice 19 for return of the circuit heating, and a domestic hot water outlet 26 adjacent to the outlet 22 of the heating circuit. The sanitary cold water inlet orifice 24 is connected to a cold water inlet illustrated by a water meter 27, and to the cold water installation illustrated by a cold water tap 28. L the domestic hot water outlet 26 is connected to the domestic hot water distribution installation illustrated by a hot water tap 29.
Des robinets d'arrêt 31, associés chacun à l'un des orifices 19, 22, 24, 26, sont montés le long du bord inférieur 34 de l'embase 14. Un robinet d'arrêt 31 est illustré par exemple à la figure 6 en liaison avec l'orifice 19. Le corps du robinet est défini par la paroi d'une cavité 32 formée dans l'embase 14. Un mécanisme de robinet 33 est fixé dans un trou faisant communiquer la cavité 32 avec l'extérieur à travers le bord inférieur 34 de l'embase 14. Le mécanisme 33 porte une tige rotative de commande 36 dont une extrémité intérieure à la cavité 32 porte un obturateur mobile 37 coopérant avec un siège 38 à travers lequel la cavité 32 communique avec un passage interne 39 de l'embase 14.Stop valves 31, each associated with one of the orifices 19, 22, 24, 26, are mounted along the lower edge 34 of the base 14. A stop valve 31 is illustrated for example in FIG. 6 in connection with the orifice 19. The body of the valve is defined by the wall of a cavity 32 formed in the base 14. A valve mechanism 33 is fixed in a hole making the cavity 32 communicate with the outside at through the lower edge 34 of the base 14. The mechanism 33 carries a rotary control rod 36 whose one end inside the cavity 32 carries a movable shutter 37 cooperating with a seat 38 through which the cavity 32 communicates with an internal passage 39 of the base 14.
Comme le montrent en particulier les figures 5 à 9, l'embase 14 définit différents passages internes, tels que le passage 39 qui vient d'être décrit, et cavités telles que la cavité 32 également décrite ci-dessus. On va d'abord d'écrire en référence à la figure 3 le schéma que ces passages et cavités réalisent entre les orifices 12, 13, 19, 22, 24, 26, de l'embase 14. Un passage interne 41 fait communiquer l'orifice 13 de retour du circuit chaudière avec l'orifice 22 de départ du circuit chauffage, en passant par un point de raccordement 42 avec l'une des entrées d'un échangeur de chaleur 43 qui est illustré par deux flèches croisées à la figure 3. L'orifice 19 de retour du circuit chauffage communique avec l'orifice 12 de départ du circuit chaudière par l'intermédiaire d'un premier trajet 46-56 d'une vanne à trois voies 44 et, entre l'accès commun 46 de celle-ci et l'orifice 12, d'une pompe - ou circulateur -47. Ainsi, quand la vanne à trois voies 44 est dans la position représentée à la figure 3, de l'eau de chauffage fonctionne en circuit fermé, grâce à la pompe 47 entre l'échangeur 8, le conduit 11, l'orifice 13, le passage 41, l'orifice 22, les radiateurs 23, l'orifice de retour de chauffage 19, le premier trajet 46-56 de la vanne à trois voies 44, la pompe 47, l'orifice de départ de circuit chaudière 12 et le conduit 9.As shown in particular in FIGS. 5 to 9, the base 14 defines different internal passages, such as the passage 39 which has just been described, and cavities such as the cavity 32 also described above. We will first write with reference to Figure 3 the diagram that these passages and cavities make between the orifices 12, 13, 19, 22, 24, 26, of the base 14. An internal passage 41 communicates the opening 13 of the boiler circuit with the opening 22 of the heating circuit, passing through a connection point 42 with one of the inputs of a heat exchanger 43 which is illustrated by two crossed arrows in the figure 3. The return port 19 of the heating circuit communicates with the opening 12 of the boiler circuit via a first path 46-56 of a three-way valve 44 and, between the common access 46 thereof and the orifice 12 , a pump - or circulator -47. Thus, when the three-way valve 44 is in the position shown in FIG. 3, heating water operates in a closed circuit, thanks to the pump 47 between the exchanger 8, the conduit 11, the orifice 13, the passage 41, the orifice 22, the radiators 23, the heating return orifice 19, the first path 46-56 of the three-way valve 44, the pump 47, the starting point of the boiler circuit 12 and the conduit 9.
L'orifice 26 de départ du circuit eau chaude sanitaire est raccordé par un passage interne 48 de l'embase avec un point de sortie 49 de l'échangeur 43 situé à l'extrémité aval d'un trajet récepteur de chaleur 51 de l'échangeur 43, dont le point d'entrée 52 est raccordé à l'orifice d'entrée 24 par l'intermédiaire d'un détecteur de débit 53. Le détecteur de débit fournit par une ligne 54 un signal électrique qui sert à commander la vanne à trois voies 44 pour, en cas de débit dans le circuit d'eau chaude sanitaire, faire passer la vanne 44 de la position de repos qui a été décrite précédemment à une position où le premier trajet -ou trajet "chauffage central"- de cette vanne, entre les accès 46 et 56, est interrompu tandis qu'un deuxième trajet -ou trajet "production d'eau chaude sanitaire"- de la vanne, entre l'accès commun 46 et un second accès sélectif 57, est établi de façon à raccorder l'accès commun 46 et par conséquent l'entrée de la pompe 47 avec l'extrémité aval 58 du trajet émetteur de chaleur 59 de l'échangeur 43. Ainsi, quand la vanne à trois voies désactive le trajet 46-56 et active le trajet 46-57, l'eau de chauffage circule en circuit fermé par l'échangeur 8, le conduit 11, l'orifice 13 de retour de circuit chaudière, le passage 41, le trajet émetteur de chaleur 59 de l'échangeur 43, le trajet "production d'eau chaude sanitaire" 57-46 de la vanne à trois voies 44, la pompe 47, l'orifice 12 de départ du circuit chaudière et le conduit 9. L'eau ne circule plus par le circuit de chauffage central 21 car la vanne à trois voies 44 interrompt ce circuit. Le signal fourni par le détecteur de débit 53 est transmis à la vanne à trois voies 44 par l'intermédiaire d'un commutateur été-hiver 61. Dans la position hiver représentée, le commutateur 61 transmet directement le signal du détecteur 53 à la vanne 44, de sorte que dès la disparition du débit dans le circuit d'eau chaude sanitaire, la vanne à trois voies 44 reprend la position de repos représentée à la figure 3.The opening 26 of the domestic hot water circuit is connected by an internal passage 48 of the base with an exit point 49 of the exchanger 43 located at the downstream end of a heat receiving path 51 of the exchanger 43, the entry point 52 of which is connected to the entry orifice 24 by means of a flow detector 53. The flow detector supplies an electrical signal via a line 54 which is used to control the valve three-way 44 for, in the event of a flow in the domestic hot water circuit, pass the valve 44 from the rest position which has been described above to a position where the first path - or "central heating" path - of this valve, between accesses 46 and 56, is interrupted while a second path - or "domestic hot water production" path - of the valve, between common access 46 and a second selective access 57, is established by so as to connect the common access 46 and therefore the inlet of the pump 4 7 with the downstream end 58 of the heat emitting path 59 of the exchanger 43. Thus, when the three-way valve deactivates the path 46-56 and activates the path 46-57, the heating water circulates in a closed circuit through the exchanger 8, the conduit 11, the orifice 13 of the boiler circuit return, the passage 41, the heat emitting path 59 of the exchanger 43, the “domestic hot water production” path 57-46 of the three-way valve 44, the pump 47, the opening 12 of the boiler circuit and the conduit 9. The water no longer circulates through the central heating circuit 21 because the three-way valve 44 interrupts this circuit. The signal supplied by the flow detector 53 is transmitted to the three-way valve 44 via a summer-winter switch 61. In the winter position shown, the switch 61 directly transmits the signal from the detector 53 to the valve 44, so that as soon as the flow in the domestic hot water circuit disappears, the three-way valve 44 returns to the rest position shown in FIG. 3.
Ainsi, le chauffage central est rétabli dès que le puisage d'eau chaude sanitaire cesse. Lorsque le commutateur 61 est en position été, le signal du détecteur de débit d'eau chaude sanitaire 53 est modifié par un étage 62 qui est raccordé à une sonde de température 63 exposée à l'eau de chauffage arrivant par l'orifice 13. L'étage 62 a pour fonction de prolonger le signal envoyé à la vanne à trois voies 44 après la disparition du débit d'eau chaude sanitaire tant que la température à la sortie de la chambre de combustion 8 demeure supérieure à un certain seuil, par exemple 30°C. Ainsi, tant que l'eau est chaude, le circuit de chauffage de l'eau sanitaire reste établi et le circuit de chauffage central interrompu. On évite ainsi l'effet indésirable de thermosiphon en direction des radiateurs 23 après chaque puisage d'eau chaude en été. Cet effet de thermosiphon résulte du fait qu'en pratique certains au moins des radiateurs 23 sont placés beaucoup plus haut que la chambre de combustion 4, par exemple à un étage plus élevé d'un bâtiment.Thus, central heating is restored as soon as the drawing of domestic hot water stops. When the switch 61 is in the summer position, the signal from the domestic hot water flow detector 53 is modified by a stage 62 which is connected to a temperature probe 63 exposed to the heating water arriving through the orifice 13. The stage 62 has the function of extending the signal sent to the three-way valve 44 after the disappearance of the domestic hot water flow as long as the temperature at the outlet of the combustion chamber 8 remains above a certain threshold, for example example 30 ° C. Thus, as long as the water is hot, the domestic water heating circuit remains established and the central heating circuit interrupted. This avoids the undesirable effect of thermosiphon in the direction of the radiators 23 after each drawing of hot water in summer. This thermosiphon effect results from the fact that in in practice, at least some of the radiators 23 are placed much higher than the combustion chamber 4, for example on a higher floor of a building.
Le signal fourni par la sonde de température 63 sert également à piloter la valve gaz 18, d'une manière connue qui en soi ne fait pas partie de l'invention.The signal provided by the temperature probe 63 also serves to control the gas valve 18, in a known manner which in itself is not part of the invention.
On va maintenant décrire plus en détail les particularités constitutives du module.We will now describe in more detail the specific features of the module.
D'une manière générale, les composants de distribution sont entièrement logés dans l'embase tandis que les composants de fonction électrique et/ou thermique sont fixés sur la face avant de l'embase, donc sur la face opposée aux orifices 19, 22, 24, 26. La pompe 47 (figures 4 et 5) , est ainsi fixée de manière étanche sur une surface appropriée de l'embase. L'espace d'aspiration 66 de la pompe communique avec une cavité 67 de l'embase 14 (figures 5 et 9) conduisant à l'accès commun 46 de la vanne à trois voies. L'espace de refoulement 68 de la pompe 47 communique avec une cavité 69 de l'embase 14 reliée à l'orifice 12 de départ du circuit chaudière.In general, the distribution components are entirely housed in the base while the electrical and / or thermal function components are fixed on the front face of the base, therefore on the face opposite to the orifices 19, 22, 24, 26. The pump 47 (FIGS. 4 and 5) is thus fixed in leaktight manner on an appropriate surface of the base. The suction space 66 of the pump communicates with a cavity 67 of the base 14 (Figures 5 and 9) leading to the common access 46 of the three-way valve. The discharge space 68 of the pump 47 communicates with a cavity 69 of the base 14 connected to the orifice 12 at the start of the boiler circuit.
L'échangeur de chaleur 43 est un échangeur à plaques convenablement fixé sur la face avant de l'embase 14. La figure 8 montre que les quatre raccordements 42, 49, 52, 58 de l'échangeur 43 sont réalisés sous la forme d'orifices convenablement positionnés à travers la face frontale de l'embase. Ces orifices communiquent de manière étanche avec des orifices correspondants (non représentés) prévus sur la face d'appui de l'échangeur de chaleur 43.The heat exchanger 43 is a plate exchanger suitably fixed on the front face of the base 14. FIG. 8 shows that the four connections 42, 49, 52, 58 of the exchanger 43 are made in the form of orifices suitably positioned through the front face of the base. These orifices communicate in leaktight manner with corresponding orifices (not shown) provided on the bearing face of the heat exchanger 43.
Les passages internes aménagés dans l'embase réalisent les intercommunications qui ont été décrites précédemment et qui sont visibles dans leur réalisation pratique possible aux figures 8 et 9. La figure 8 illustre aussi, à travers la face avant de l'embase, le trou de montage 71 pour la sonde de température 63 ainsi qu'un trou de montage 72, débouchant également dans le passage 41, pour la soupape de sécurité du circuit de chauffage 73 (figures 4 et 5) .The internal passages arranged in the base realize the intercommunications which have been described previously and which are visible in their practical realization possible in FIGS. 8 and 9. FIG. 8 also illustrates, through the front face of the base, the mounting hole 71 for the temperature probe 63 as well as a mounting hole 72, also opening into the passage 41, for the safety valve of the heating circuit 73 (Figures 4 and 5).
On va maintenant décrire plus en détail, en référence à la figure 6, la vanne à trois voies 44. Celle-ci comprend un obturateur 74 qui est mobile dans une cavité 76 de l'embase 14 entre deux sièges opposés qui constituent l'un l'accès sélectif 56 et l'autre l'accès sélectif 57. L'obturateur 74 est monté à l'extrémité d'un levier oscillant 77 dont l'autre extrémité 78 est soumise à l'action d'un actionneur 79 comprenant un ressort de rappel 81 tendant en permanence à ramener le levier 77 dans la position dans laquelle l'obturateur 74 ferme le deuxième accès 57 et ouvre le premier accès 56 pour réaliser le mode de fonctionnement "chauffage central". L' actionneur 79 comprend également un électroaimant 82 qui, lorsqu'il est excité par le signal produit par le détecteur d'écoulement d'eau sanitaire 53, fait basculer le levier 77, à 1 ' encontre de l'action du ressort de rappel 81, dans la position dans laquelle le premier accès 56 est fermé et le deuxième accès 57 est ouvert, pour réaliser le fonctionnement "puisage d'eau chaude sanitaire" .We will now describe in more detail, with reference to Figure 6, the three-way valve 44. This comprises a shutter 74 which is movable in a cavity 76 of the base 14 between two opposite seats which constitute one selective access 56 and the other selective access 57. The shutter 74 is mounted at the end of an oscillating lever 77, the other end 78 of which is subjected to the action of an actuator 79 comprising a return spring 81 permanently tending to return the lever 77 to the position in which the shutter 74 closes the second port 57 and opens the first port 56 to achieve the "central heating" operating mode. The actuator 79 also comprises an electromagnet 82 which, when excited by the signal produced by the domestic water flow detector 53, causes the lever 77 to tilt, against the action of the return spring 81, in the position in which the first access 56 is closed and the second access 57 is open, to carry out the "domestic hot water drawing" operation.
En examinant la figure 3, on comprend qu'en fonctionnement "chauffage central", la pression monte en amont des radiateurs 23 lorsque par coïncidence de leur régulation respective ils sont tous fermés ou presque fermés en même temps. Cette surpression est transmise au deuxième accès 57 par l'intermédiaire du trajet émetteur de chaleur 59 de l'échangeur. Revenant à la figure 6, pour éviter les inconvénients liés à cette surpression et aux faibles vitesses d'écoulement qui l'accompagnent, notamment dans le trajet eau 8 de l'échangeur 7 de la chambre de combustion, le ressort 81 est réalisé sous la forme d'un ressort taré qui autorise le décollement de l'obturateur 74 relativement au siège constituant le deuxième accès 57 lorsque la pression dans le deuxième accès 57 dépasse un certain seuil. Dans cette situation, un certain débit s'instaure à travers le trajet 59 de l'échangeur et le deuxième accès de la vanne à trois voies, ce qui augmente le débit global de la pompe 47, fait disparaître son d'éventuel bruit de fonctionnement et/ou sa cavitation, améliore le fonctionnement de 1 ' échangeur gaz de combustion/eau 6 ainsi que la régulation notamment au moyen de la sonde de température 63.By examining FIG. 3, it will be understood that in "central heating" operation, the pressure rises upstream of the radiators 23 when, by coincidence of their respective regulation, they are all closed or almost closed at the same time. This overpressure is transmitted to the second access 57 via the heat emitter path 59 of the exchanger. Returning to FIG. 6, to avoid the drawbacks associated with this overpressure and at the low flow velocities which accompany it, in particular in the water path 8 of the exchanger 7 of the combustion chamber, the spring 81 is produced in the form of a calibrated spring which allows the detachment of the shutter 74 relative to the seat constituting the second port 57 when the pressure in the second port 57 exceeds a certain threshold. In this situation, a certain flow rate is established through the path 59 of the exchanger and the second access of the three-way valve, which increases the overall flow rate of the pump 47, eliminates its possible operating noise. and / or its cavitation, improves the operation of the combustion gas / water exchanger 6 as well as the regulation in particular by means of the temperature probe 63.
Revenant à la figure 6, l' actionneur 79, en tant que composant de fonction électrique, est fixé sur la face avant de l'embase 14, extérieurement à celle-ci. Le levier 77 passe de l'intérieur de l' actionneur 77 à l'intérieur de la cavité 76 à travers une membrane d' étanchéité 83 qui ferme de façon étanche la cavité 76 en étant pincée sur tout son pourtour entre deux surfaces correspondantes de l'embase 14 et du boîtier de 1 ' actionneur 79. La membrane 83 comporte une partie 84 en forme de doigt de gant qui gaine complètement le levier 77 du côté de la cavité 76. La partie 84 forme à son extrémité l'obturateur 74 comportant deux faces opposées 86 destinées à coopérer chacune de manière étanche avec l'un respectif des sièges 56 et 57. Ainsi, toute étanchéité dynamique, c'est-à-dire par glissement de surfaces d' étanchéité l'une contre l'autre, est absente de la vanne à trois voies qui vient d'être décrite. Le levier 74 oscille autour d'un axe géométrique sensiblement situé en 87, perpendiculairement au plan de la figure 6, et dans le plan de la membrane 83. Les deux faces 86 de l'obturateur 74 forment un léger angle l'une par rapport à 1 ' autre pour que chacune soit capable de s'appuyer à plat sur son siège respectif malgré l'angle d'oscillation du levier 77 entre ses deux positions extrêmes .Returning to FIG. 6, the actuator 79, as an electrical function component, is fixed to the front face of the base 14, externally to the latter. The lever 77 passes from the interior of the actuator 77 to the interior of the cavity 76 through a sealing membrane 83 which seals the cavity 76 by being pinched on its entire periphery between two corresponding surfaces of the 'base 14 and the housing of one actuator 79. The membrane 83 has a part 84 in the form of a thermowell which completely sheaths the lever 77 on the side of the cavity 76. The part 84 forms at its end the shutter 74 comprising two opposite faces 86 intended to cooperate each in a sealed manner with a respective one of the seats 56 and 57. Thus, any dynamic sealing, that is to say by sliding sealing surfaces against one another, is absent from the three-way valve which has just been described. Lever 74 oscillates around an axis geometric substantially located at 87, perpendicular to the plane of Figure 6, and in the plane of the membrane 83. The two faces 86 of the shutter 74 form a slight angle relative to one another so that each is capable to rest flat on its respective seat despite the angle of oscillation of the lever 77 between its two extreme positions.
On va maintenant décrire en référence à la figure 7 le dispositif 53 de détection du débit d'eau chaude sanitaire .We will now describe with reference to Figure 7 the device 53 for detecting the flow of domestic hot water.
Ce dispositif comprend un mobile 88 de section triangulaire (dans un plan horizontal perpendiculaire au plan de la figure 7) monté coulissant dans une cavité verticale 89 de l'embase 14. Le mobile 88 porte à son extrémité supérieure une zone magnétique 91 susceptible d'influencer un capteur de Hall 92 monté de manière étanche à travers la face avant de l'embase 14. En l'absence de débit, le mobile 88 tombe dans la position représentée à la figure 7 en s ' appuyant sur une butée 90 perméable à l'écoulement provenant de l'orifice 24 d'arrivée d'eau froide sanitaire. En cas d'écoulement, le frottement hydraulique entraîne le mobile 88 vers le haut, lequel influence le capteur de Hall 92 qui délivre à son tour le signal commandant la permutation de la vanne à trois voies 44. Là encore, un système a été trouvé pour réaliser la fonction voulue sans avoir recours à une étanchéité dynamique entre les circuits d'eau et l'extérieur. Un dégazeur 96 est fixé de manière étanche dans un orifice 97 prévu à cet effet au sommet de l'embase en communication avec la cavité 67.This device comprises a mobile 88 of triangular section (in a horizontal plane perpendicular to the plane of FIG. 7) mounted to slide in a vertical cavity 89 of the base 14. The mobile 88 carries at its upper end a magnetic zone 91 capable of influence a Hall sensor 92 mounted in leaktight manner through the front face of the base 14. In the absence of flow, the mobile 88 falls into the position shown in FIG. 7 by pressing on a stop 90 permeable to the flow coming from the orifice 24 for the arrival of sanitary cold water. In the event of flow, the hydraulic friction drives the mobile 88 upwards, which influences the Hall sensor 92 which in turn delivers the signal controlling the permutation of the three-way valve 44. Here again, a system has been found to achieve the desired function without resorting to dynamic sealing between the water circuits and the outside. A degasser 96 is tightly fixed in an orifice 97 provided for this purpose at the top of the base in communication with the cavity 67.
Les seules étanchéités dynamiques du modules sont celles nécessaires pour les robinets de coupure 31 mais ceux-ci ne sont que très rarement manoeuvres au cours de la vie de l'appareil, et l'inévitable étanchéité dynamique autour de l'arbre de la pompe 47.The only dynamic seals of the modules are those necessary for the cut-off valves 31 but these are only very rarely operated during the life of the device, and the inevitable dynamic seal around the pump shaft 47.
Comme le montre la figure 4, l'échangeur de chaleur 43 a une forme générale quasi-rectangulaire avec une direction d'allongement horizontale et parallèle à la direction d'allongement de l'embase 14. La pompe 47 est disposée au-delà de l'une des extrémités de la longueur de l'échangeur 43. La largeur de l'échangeur 43 et le diamètre de la pompe 47 correspondent à peu près à la largeur (verticale) de l'embase 14. Entre l'échangeur 43 et la pompe 47, le détecteur d'écoulement d'eau chaude sanitaire 53 et la vanne à trois voies 44 sont disposés l'un à côté de l'autre selon une orientation générale verticale, c'est-à-dire parallèle à la largeur de l'embase 14 et de l'échangeur 43.As shown in FIG. 4, the heat exchanger 43 has a generally quasi-rectangular shape with a direction of horizontal elongation and parallel to the direction of elongation of the base 14. The pump 47 is arranged beyond one of the ends of the length of the exchanger 43. The width of the exchanger 43 and the diameter of the pump 47 correspond approximately to the width (vertical) of the base 14. Between the exchanger 43 and the pump 47, the domestic hot water flow detector 53 and the three-way valve 44 are arranged one next to the other in a generally vertical orientation, that is to say parallel to the width of the base 14 and of the exchanger 43.
A l'autre extrémité de l'échangeur 43, la sonde de température 63 et la soupape de sécurité 73 sont disposées l'une au-dessus de l'autre. Ainsi, les dimensions de l'embase 14, et par conséquent son coût de réalisation, sont considérablement réduits par rapport à la réalisation selon le EP-A-0 236 235. L'embase 14 selon l'invention peut par exemple avoir une longueur de moins de 500 mm et une largeur inférieure au quart de sa longueur.At the other end of the exchanger 43, the temperature probe 63 and the safety valve 73 are arranged one above the other. Thus, the dimensions of the base 14, and consequently its cost of production, are considerably reduced compared to the production according to EP-A-0 236 235. The base 14 according to the invention can for example have a length less than 500 mm and a width less than a quarter of its length.
Dans l'exemple représenté, l'embase 14 est réalisée sous la forme d'une pièce de fonderie de bronze ou de laiton ou encore d'une pièce en matière plastique injectée. Une telle matière plastique peut être du polyamide 6-6 chargé verre, moulé selon la technique dite des noyaux fusibles, selon laquelle les noyaux de moulage sont éliminés par fusion dans de l'eau chaude.In the example shown, the base 14 is made in the form of a bronze or brass foundry piece or even a piece of injected plastic. Such a plastic material can be glass-filled polyamide 6-6, molded according to the technique known as fusible cores, according to which the molding cores are removed by fusion in hot water.
Contrairement à l'embase décrite dans le EP-A-0 236 235, les cavités internes de l'embase 14 selon l'invention n'ont besoin à aucun endroit de se superposer. L'embase est ainsi réalisable en soudant l'une contre l'autre deux tôles chacune convenablement conformée, les soudures se faisant le long des lignes de contact correspondant d'une part au pourtour de l'embase et d'autre part le long des lignes de séparation des différentes cavités. Les raccords avec l'extérieur sont au besoin réalisés en soudant des pièces rapportées, servant par exemple de platine support pour les composants rapportés, ou d'orifices d'entrée et de sortie.Unlike the base described in EP-A-0 236 235, the internal cavities of the base 14 according to the invention need not overlap anywhere. The base is thus achievable by welding one against the other two sheets each suitably shaped, the welds being made along the contact lines corresponding on the one hand to the periphery of the base and on the other hand along the separation lines of the different cavities. Connections to the outside are, if necessary, made by welding added parts, serving for example as a support plate for the added components, or inlet and outlet orifices.
Dans l'exemple décrit et représenté aux figures 1 et 2, l'embase est intégrée dans une chaudière, mais on peut également réaliser le module selon 1 ' invention sous la forme d'un module séparé situé à distance de la chaudière . In the example described and shown in Figures 1 and 2, the base is integrated in a boiler, but the module according to the invention can also be produced in the form of a separate module located at a distance from the boiler.

Claims

REVENDICATIONS
1. Module hydraulique pour installation de chauffage central et de production d'eau chaude, comprenant une embase (14) ayant: - deux orifices de circuit chaudière (12, 13) destinés à recevoir entre eux un trajet hydraulique (8, 9, 11) passant par une chambre de combustion (4),1. Hydraulic module for central heating and hot water production installation, comprising a base (14) having: - two boiler circuit orifices (12, 13) intended to receive between them a hydraulic path (8, 9, 11 ) passing through a combustion chamber (4),
- deux orifices de circuit sanitaire (24, 26), constituant l'un un orifice d'arrivée d'eau froide sanitaire (24) et l'autre un orifice de départ d'eau chaude sanitaire (26) ,- two sanitary circuit orifices (24, 26), one constituting a sanitary cold water inlet orifice (24) and the other a sanitary hot water outlet orifice (26),
- un orifice de départ (22) et un orifice de retour (19) de circuit de chauffage, destinés à recevoir fonctionnellement entre eux un circuit de chauffage (21) comprenant au moins un appareil de chauffage (23) tel qu'un radiateur, l'embase portant: une pompe de circulation (47), une vanne à trois voies (44) définissant sélectivement un premier et un deuxième trajet d'écoulement, et un échangeur de chaleur (43) ayant un trajet émetteur de chaleur (59) et un trajet récepteur de chaleur (51) monté fonctionnellement entre les deux orifices de circuit sanitaire (24, 26), les deux orifices de circuit chauffage (19, 22) étant reliés à des passages internes (41) dans l'embase (14) de façon qu'en service le circuit de chauffage (21) soit monté en série avec la pompe (47) et le premier trajet (46-56) de la vanne à trois voies entre les deux orifices de circuit chaudière (12, 13) , et le trajet émetteur de chaleur (59) de l'échangeur de chaleur étant monté en série avec la pompe (47) et ledit deuxième trajet d'écoulement (46-57) de la vanne à trois voies entre les deux orifices (12, 13) de circuit chaudière, caractérisé en ce que l'échangeur de chaleur (43) a une direction d'allongement parallèle à celle de l'embase (14) et la pompe de circulation (47) est placée sur l'embase (14) au-delà de l'une des extrémités de la longueur de l'échangeur de chaleur (43). a starting orifice (22) and a return orifice (19) for the heating circuit, intended to functionally receive between them a heating circuit (21) comprising at least one heating appliance (23) such as a radiator, the supporting base: a circulation pump (47), a three-way valve (44) selectively defining a first and a second flow path, and a heat exchanger (43) having a heat emitting path (59) and a heat receiving path (51) operatively mounted between the two sanitary circuit orifices (24, 26), the two heating circuit orifices (19, 22) being connected to internal passages (41) in the base (14 ) so that in service the heating circuit (21) is mounted in series with the pump (47) and the first path (46-56) of the three-way valve between the two boiler circuit orifices (12, 13 ), and the heat emitting path (59) of the heat exchanger being mounted in series with the pump (47) and said second flow path (46-57) of the three-way valve between the two orifices (12, 13) of the boiler circuit, characterized in that the heat exchanger (43) has a direction of elongation parallel to that of the base (14) and the circulation pump (47) is placed on the base (14) beyond one of the ends of the length of the heat exchanger ( 43).
2. Module selon la revendication 1, caractérisé en ce que la pompe (47) et l'échangeur de chaleur (43) ont sensiblement le même encombrement selon la largeur de 1 ' embase (14) .2. Module according to claim 1, characterized in that the pump (47) and the heat exchanger (43) have substantially the same size according to the width of one base (14).
3. Module selon la revendication 1 ou 2, caractérisé en ce que la vanne à trois voies (44) est disposée sur l'embase (14) entre la pompe (47) et l'échangeur de chaleur (43).3. Module according to claim 1 or 2, characterized in that the three-way valve (44) is arranged on the base (14) between the pump (47) and the heat exchanger (43).
4. Module selon l'une des revendications 1 à 3, caractérisé en ce que la vanne à trois voies (44) comprend un obturateur (74) monté mobile entre deux sièges opposés (56, 57) coopérant chacun avec l'une des faces (86) de l'obturateur, lequel est monté à une extrémité d'un levier oscillant (77) dont l'autre extrémité (78) est raccordée à des moyens de commande (79), et en ce qu'un axe géométrique (87) d'oscillation du levier est situé entre les deux extrémités (74, 78) du levier, sensiblement dans le plan d'une membrane4. Module according to one of claims 1 to 3, characterized in that the three-way valve (44) comprises a shutter (74) mounted movably between two opposite seats (56, 57) each cooperating with one of the faces (86) of the shutter, which is mounted at one end of an oscillating lever (77), the other end (78) of which is connected to control means (79), and in that a geometric axis ( 87) of the lever oscillation is located between the two ends (74, 78) of the lever, substantially in the plane of a membrane
(83) dans laquelle le levier est emmanché de manière étanche . (83) in which the lever is tightly fitted.
5. Module selon l'une des revendications l à 4, caractérisé par des moyens appliquant à l'obturateur5. Module according to one of claims l to 4, characterized by means applying to the shutter
(74) de la vanne à trois voies (44) un effort limité maintenant l'obturateur en position interrompant le deuxième trajet (57) d'écoulement de la vanne à trois voies, laquelle est montée entre l'orifice (19) de retour du circuit de chauffage et l'orifice de départ (12) du circuit chaudière de façon qu'au-delà d'une différence de pression prédéterminée entre le trajet émetteur de chaleur (59) et l'orifice (19) de retour du circuit de chauffage, l'obturateur (74) est déplacé à 1' encontre de l'effort limité pour rétablir le deuxième trajet d'écoulement (57) de la vanne à trois voies.(74) of the three-way valve (44) a limited force keeping the shutter in position interrupting the second flow path (57) of the three-way valve, which is mounted between the return orifice (19) of the heating circuit and the flow orifice (12) of the boiler circuit so that beyond a predetermined pressure difference between the heat emitting path (59) and the return orifice (19) of the heating circuit, the shutter (74) is moved against the limited effort to restore the second flow path (57) of the three-way valve.
6. Module selon l'une des revendications 1 à 5, caractérisé en ce qu'il comprend des moyens (53) pour détecter le débit d'eau dans le trajet sanitaire et pour commander l'interruption du premier trajet d'écoulement (56) et l'établissement du deuxième trajet (57) d'écoulement lorsqu'un tel débit d'eau est détecté, et des moyens (62, 63) pour introduire un retard dans le rétablissement du premier trajet et dans l'interruption du deuxième trajet après la disparition dudit débit d'eau.6. Module according to one of claims 1 to 5, characterized in that it comprises means (53) for detecting the flow of water in the sanitary path and for controlling the interruption of the first flow path (56 ) and the establishment of the second flow path (57) when such a water flow is detected, and means (62, 63) for introducing a delay in the restoration of the first path and in the interruption of the second path after the disappearance of said water flow.
7. Module selon la revendication 6, caractérisé en ce que ledit retard dure jusqu'à ce que, dans une position été, la température à la sortie du circuit chaudière passe au-dessous d'une valeur prédéterminée.7. Module according to claim 6, characterized in that said delay lasts until, in a summer position, the temperature at the outlet of the boiler circuit drops below a predetermined value.
8. Module selon l'une des revendications 1 à 7, caractérisé en ce qu'il comprend comme moyens pour détecter le débit d'eau dans le trajet sanitaire un mobile (88) placé dans le trajet sanitaire et tendant à être entraîné par le débit d'eau jusque devant un capteur (92) de présence du mobile.8. Module according to one of claims 1 to 7, characterized in that it comprises as means for detecting the flow of water in the sanitary path a mobile (88) placed in the sanitary path and tending to be driven by the water flow to a mobile presence sensor (92).
9. Module selon la revendication 8, caractérisé en ce que le mobile (88) est monté dans une cavité (89) de l'embase (14) .9. Module according to claim 8, characterized in that the mobile (88) is mounted in a cavity (89) of the base (14).
10. Module selon l'une des revendications 1 à 9, caractérisé en ce que parmi les composants et conduits associés à l'embase (14), les conduits et les composants de distribution sont logés dans l'embase (14) et les composants (43, 44, 47, 92, 63, 73) de fonction électrique et/ou thermique sont fixés sur une même face de l'embase (14). 10. Module according to one of claims 1 to 9, characterized in that among the components and conduits associated with the base (14), the conduits and the distribution components are housed in the base (14) and the components (43, 44, 47, 92, 63, 73) of electrical and / or thermal function are fixed on the same face of the base (14).
11. Module selon l'une des revendications 1 à 10, caractérisé en ce que la longueur de l'embase (14) est au maximum de l'ordre de 500 mm.11. Module according to one of claims 1 to 10, characterized in that the length of the base (14) is at most of the order of 500 mm.
12. Module selon l'une des revendications 1 à 11, caractérisé en ce que des robinets de coupure (31) sont associés à certains au moins (19, 22, 24, 26) desdits orifices .12. Module according to one of claims 1 to 11, characterized in that cut-off valves (31) are associated with at least some (19, 22, 24, 26) of said orifices.
13. Module selon la revendication 12, caractérisé en ce que les orifices (19, 22, 24, 26) associés à des robinets (31) sont sensiblement alignés sur une face arrière de l'embase (14), et les robinets (31) sont alignés le long d'un bord inférieur (34) de l'embase (14) .13. Module according to claim 12, characterized in that the orifices (19, 22, 24, 26) associated with taps (31) are substantially aligned on a rear face of the base (14), and the taps (31 ) are aligned along a lower edge (34) of the base (14).
14. Module selon l'une des revendications 1 à 13, caractérisé en ce que l'embase (14) est exempte de tout circuit de combustible et de tout composant destiné à contenir du combustible.14. Module according to one of claims 1 to 13, characterized in that the base (14) is free of any fuel circuit and of any component intended to contain fuel.
15. Module selon l'une des revendications 1 à 14, caractérisé en ce que l'embase (14) est une pièce de fonderie.15. Module according to one of claims 1 to 14, characterized in that the base (14) is a foundry piece.
16. Module selon l'une des revendications 1 à 14, caractérisé en ce que l'embase (14) est une pièce d'injection en matière plastique.16. Module according to one of claims 1 to 14, characterized in that the base (14) is a plastic injection part.
17. Module selon l'une des revendications 1 à 14, caractérisé en ce que l'embase comprend deux tôles convenablement conformées par emboutissage et sondées ensemble le long de lignes délimitant les divers passages internes à réaliser, des pièces métalliques étant soudées sur lesdites tôles pour former des surfaces de raccord avec l'extérieur.17. Module according to one of claims 1 to 14, characterized in that the base comprises two sheets suitably shaped by stamping and probed together along lines delimiting the various internal passages to be produced, metal parts being welded to said sheets to form connecting surfaces with the outside.
18. Chaudière équipée d'un module selon l'une des revendications 1 à 17, caractérisée en ce qu'elle comprend une chambre de combustion (4) traversée par un trajet hydraulique (8) raccordé par chacune de ses extrémités à l'un des orifices (12, 13) de circuit chaudière, et des moyens (17, 18) d'alimentation en combustible reliés à un brûleur (3) chauffant le trajet hydraulique (8) dans la chambre de combustion (4).18. Boiler equipped with a module according to one of claims 1 to 17, characterized in that it comprises a combustion chamber (4) traversed by a hydraulic path (8) connected by each of its ends at one of the boiler circuit orifices (12, 13), and fuel supply means (17, 18) connected to a burner (3) heating the hydraulic path (8) in the combustion chamber (4 ).
19. Chaudière équipée d'un module selon l'une des revendications 1 à 17, caractérisée en ce que les moyens d'alimentation en combustible (17, 18) sont séparés de l'embase (14). 19. Boiler equipped with a module according to one of claims 1 to 17, characterized in that the fuel supply means (17, 18) are separated from the base (14).
PCT/FR1997/002000 1996-11-08 1997-11-07 Hydraulic module for central heating installation WO1998021529A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU50582/98A AU5058298A (en) 1996-11-08 1997-11-07 Hydraulic module for central heating installation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9613690A FR2755752B1 (en) 1996-11-08 1996-11-08 HYDRAULIC MODULE FOR CENTRAL HEATING AND HOT WATER PRODUCTION INSTALLATIONS, AND BOILERS EQUIPPED WITH SUCH A MODULE
FR96/13690 1996-11-08

Publications (1)

Publication Number Publication Date
WO1998021529A1 true WO1998021529A1 (en) 1998-05-22

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AU (1) AU5058298A (en)
FR (1) FR2755752B1 (en)
WO (1) WO1998021529A1 (en)

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DE19912284A1 (en) * 1999-03-18 2000-09-28 Grundfos A S Bjerringbro Compact heating system has a pump assembly, switching elements, air separator combined to form unit mounted essentially laterally next to or in and directly connected to connection unit
GB2338542B (en) * 1998-06-18 2002-06-26 Heating World Group Ltd Domestic boiler

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FR2787857B1 (en) * 1998-12-24 2001-04-06 Vergne Innovation PROCESS FOR FORMING A DUCT, THREE-WAY VALVE THUS PRODUCED, AND APPLICATION TO A BOILER
IT1308197B1 (en) * 1999-02-24 2001-12-10 Fontecal S P A MODULAR HYDRAULIC GROUP.
DE50313603D1 (en) * 2003-11-03 2011-05-19 Grundfos As Assembly unit for a compact heating system
ITBO20040821A1 (en) * 2004-12-28 2005-03-28 Renato Vaiani INTEGRATED HYDRAULIC GROUP.
ITMI20060751A1 (en) * 2006-04-14 2007-10-15 Fugas S P A HYDRAULIC RETURN GROUP FOR MURAL BOILERS
EP2944893A1 (en) * 2009-05-26 2015-11-18 WS-System GmbH Hot water preparing device
DE102009048585A1 (en) * 2009-10-07 2011-04-14 Stiebel Eltron Gmbh & Co. Kg Hydraulic module for a domestic appliance and heat pump with a hydraulic module
ITBO20090757A1 (en) * 2009-11-20 2011-05-21 O T M A S N C Di Spaggiari & C MULTIFUNCTIONAL MONOBLOCK MANIFOLD GROUP FOR MURAL BOILERS
EP2942583B1 (en) * 2014-05-06 2017-08-23 O.T.M.A. S.N.C. di Spaggiari & C. Enbloc support body for a hydraulic valve group for use in a wall-mounted boiler

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EP0236235A1 (en) 1986-03-07 1987-09-09 ELETTRO TERMICA SUD S.p.A. Gas heater
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EP0652408A1 (en) * 1993-11-10 1995-05-10 ING. A. BERETTA S.p.A. Very compact hydraulic assembly for wall gas-fired boilers

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EP0236235A1 (en) 1986-03-07 1987-09-09 ELETTRO TERMICA SUD S.p.A. Gas heater
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338542B (en) * 1998-06-18 2002-06-26 Heating World Group Ltd Domestic boiler
DE19912284A1 (en) * 1999-03-18 2000-09-28 Grundfos A S Bjerringbro Compact heating system has a pump assembly, switching elements, air separator combined to form unit mounted essentially laterally next to or in and directly connected to connection unit
DE19912284B4 (en) * 1999-03-18 2012-10-18 Grundfos A/S Compact heating installation

Also Published As

Publication number Publication date
FR2755752A1 (en) 1998-05-15
AU5058298A (en) 1998-06-03
FR2755752B1 (en) 1999-02-05

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