EP2399084B1 - Continuous flow heater for hot water - Google Patents

Continuous flow heater for hot water Download PDF

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Publication number
EP2399084B1
EP2399084B1 EP10710074.5A EP10710074A EP2399084B1 EP 2399084 B1 EP2399084 B1 EP 2399084B1 EP 10710074 A EP10710074 A EP 10710074A EP 2399084 B1 EP2399084 B1 EP 2399084B1
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EP
European Patent Office
Prior art keywords
water
housing
ferromagnetic material
hot water
heating circuit
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EP10710074.5A
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German (de)
French (fr)
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EP2399084A2 (en
Inventor
Dominique Akel
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Individual
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Individual
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    • 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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/106—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with electrodes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems

Definitions

  • the appliances are supplied with cold water directly heated in the tank of the apparatus by a resistance.
  • induction heaters used to provide regulated hot water at a precise temperature for sanitary purposes or water heaters delivering a precise amount of hot water at a given temperature for food preparations.
  • the user must first call cold water or hot water through the control panel, the tap simply allowing him to regulate the output water flow without controlling the operation and shutdown of the water heater.
  • This operation can only be triggered by pressing the cold or hot water call button and, in the case of hot water, by setting the temperature to the displayed temperature. from the outset that is that of the water at the entrance of the heating body.
  • This water heater can not operate by simple operation of the tap.
  • the document FR 2,685,760 relates to an instant hot water dispensing apparatus, providing small doses of hot water at a pre-set temperature and for dissolving a food powder such as a coffee powder, to form a hot beverage.
  • This device has a water tank in which is taken the small amount of water that must be heated.
  • the problem dealt with by this apparatus is that of supplying the water which is immediately at the desired temperature without the temperature of the supplied water rising. progressively, for example, from room temperature to the final temperature this is necessary so that the dose of water taken is homogeneous, at the required temperature.
  • the device is controlled using a joystick that simulates the drawing of the hot water dose by starting the heating. But in fact, the water supply is timed until the dose taken from the tank is heated to the correct temperature by the induction heater. Only then does the valve release the hot water dose.
  • Such a hot water induction device can not be a hot water source for continuously supplying a point of drawing such as a sink or a household appliance operating with hot water.
  • the object of the present invention is to develop an installation for the instantaneous preparation of hot water, which is easily put in place and is of a simple and effective embodiment to provide hot water while avoiding scale deposition and its consequences. .
  • the installation of instantaneous hot induction water preparation according to the invention offers the advantage of being an installation of a realization and a particularly simple operation allowing a variety of applications.
  • the operation of the installation is almost automatic. Once the set temperature is set as it is done on an electric water heater, the appliance operates automatically by simply opening the tap and stops with its closing.
  • the installation has the advantage of combining the passage of cold water and that of the water to be heated through the anti-scaling device, so that a single installation apparatus particularly simple which requires only the connection on the supply line and the connection to the outlet line (hot water and, if necessary, cold water), as well as the electrical connection, can thus be installed in the immediate vicinity of the point of use.
  • passage sensors are integrated in the installation and do not have to be installed at the point of drawing (hot water tap, cold water tap or mixing valve). Only the requested water flow is detected by the passage sensor.
  • the instantaneous hot water preparation plant can be easily mounted in the supply line of a water point such as the pipe connected to a basin mixer or the hot water tap, for example bypassing the cold water pipe, especially since the upstream and downstream connections of the installation can be connected to the incoming and outgoing pipes of the use station by flexible pipes to make the best possible use the often limited space available in the vicinity of the use station, under the sink or sink or in the washing machine or dishes.
  • this installation constitutes a block which only requires the connection the arrival and the exit of water and that of the electrical supply, in the event of breakdown, the installation dismounts easily and simply to be replaced very quickly by another installation of the same type.
  • Treatment of the water by the anti-scale device upstream of the water heating circuit avoids the deposit of scale and, in the case of an installation also comprising a cold water outlet derived from the pipe downstream of the device antitartre and upstream of the water heating device, it avoids the deposit of scale in this part of pipe and in the point of use.
  • the electrical energy consumption of the installation is very low since there is no loss associated with the storage of hot water, the heating of the water being almost instantaneous and passing by; the water heating circuit, advantageously sized according to the predicted flow rate, allows to provide water heated by induction, at the right temperature and almost instantaneously.
  • the closing of the faucet or the hot water tap or valve is automatically detected by the passage detector which controls the shutdown of the water heater and the anti-scale treatment device and is also a safety feature.
  • the water heating circuit with its inductor and the anti-scale device are housed in a housing connected to an electrical box comprising the generator supplying the inductor of the heating circuit, the generator of the anti-scaling device and the circuit control.
  • the installation comprises a housing provided with an upstream connection and a downstream connection for the connection of the installation to the water pipe supplying the utilization station and a terminal block for the connection of the the power line. If necessary, it is also provided a cold water outlet which will be passed in the anti-scaling device.
  • the installation constitutes a virtually closed assembly, having access to only the adjustment elements such as a temperature control knob and / or a start-stop button;
  • the box installs as is in the supply line of the use station, for example directly under the sink, or next to the shower or under a sink and / or in a washing machine or dishes. Just make three connections: the upstream connection for the inlet, the downstream connection for its water outlet and the electrical connection.
  • the heating circuit in its various embodiments is directly connected to the cold water inlet so that the heating circuit is always filled with water and as soon as the high frequency generator is switched on, induction can heat the water in the heating circuit.
  • the various embodiments of the heating circuit as a coil made of a ferromagnetic material or in contact with a ferromagnetic material constituting the inductor which will be heated by the eddy currents induced by the inductor, effectively provide heating directly and / or by conduction.
  • the heating circuit is housed in a housing and the free volume between the heating circuit and the housing is filled with a ferromagnetic material in bulk.
  • the ferromagnetic material is thus directly in contact with a large surface of the coil or plates which may be of a ferromagnetic material or not, so that the passage of heat by conduction is extremely effective.
  • the bulk ferromagnetic material is further immersed in a heat transfer liquid improving all the thermal conduction.
  • the heating circuit is constituted by a housing housing an insert made of a ferromagnetic material exposed to the high frequency ferromagnetic field of the inductor.
  • the housing housing the insert is preferably made of a non-ferromagnetic material, for example copper or aluminum.
  • the insert thus produced has the advantage of being heated directly by induction and of exchanging heat with the medium in which it is immersed, that is to say the water to be heated.
  • the thermal conduction and, in general, the heat exchange is particularly efficient thanks to the chimney shapes delimited by the plate, the fins and the enclosure formed of the housing, so that the water to be heated is effectively distributed between the different chimneys and is in the form of thin nets particularly effective to heat.
  • the housing is made of a non-ferromagnetic metal such as copper or aluminum.
  • control circuit is equipped with an IR or RF radio frequency receiver to be controlled by signals from an infrared IR or radio frequency RF transmitter making it possible to adjust the water temperature remotely without directly intervening. on the case.
  • This solution can come in addition to the control knob on the control box.
  • the installation 100 instant hot water preparation in particular domestic hot water is intended to be connected directly upstream of a user station PU or in it.
  • the PU use station is a LV washbasin or washbasin, an EV sink, a ML washing machine or a MV dishwashing machine.
  • the various use stations consume hot water at particular temperatures, adapted to their operation.
  • the installation 100 consists of a water heater passage 110, crossed by the water vein 101 to be heated. It comprises a heating circuit 111 equipped with an inductor 112 powered by a high frequency generator 113.
  • the circuit 111 has a sufficient length to heat the water during its passage in the circuit exposed to the inductor 112.
  • the circuit 111 and the inductor 112 are sized according to average parameters such as the average flow of water , its variation in a flow rate range and a temperature range, so as to optimize the installed electrical power.
  • the heating circuit 111 is preceded upstream in the direction of passage of the water to be heated, an electromagnetic anti-scaling device 120 generating a variable electromagnetic field to modify the stereochemical structure of calcium carbonate contained in water to prevent its deposition in the form of scale.
  • the anti-scaling device 120 comprises a generator 123 providing an electrical signal supplying the electromagnetic system generating the electromagnetic field 122 applied to the water passing through the pipe 121.
  • the installation also comprises a water passage sensor 130 providing a signal Sec as a function of the water passage in the installation, that is to say according to whether the water circulates or is stopped and, preferably, depending also on the water flow.
  • the water passage sensor 130 is a pressure sensor connected to the water pipe 102 passing through the housing 160 and detecting the variation in pressure at the opening and closing of the tap of the point of use PU or a sensor associated with a diaphragm mounted in the pipe and providing a signal representing not only a flow of water (water passage / stop the water passage) but also the importance of flow to adjust the power supplied to the heating device 110.
  • the water passage sensor 130 is advantageously combined with a temperature sensor 140 detecting the temperature of the water at the outlet of the installation 100 to control the electrical power supplied to a set temperature Tc and this whatever the pulsed water flow.
  • the induction heating device 110, the anti-scale device 120 and the water passage sensor 130 and the temperature sensor 140 are connected to a control circuit 150 that manages the operation of the plant 100 according to the hot water demand. (hot water demand, off, hot water set temperature).
  • the control circuit 150 contains the operating program with the adjustable parameters whose value is set at the time of installation of the installation according to general characteristics or according to the particular operation required.
  • the temperature of the supplied water will be lower than the temperature of 65-70 ° C, imposed on traditional water heaters with hot water supply; it may be at the temperature of use without requiring dosing with cold water, for example a temperature of 40-50 ° C.
  • the set temperature may be higher than that of the hot water supplying a sink.
  • the set temperature will be given by the washing program and, if appropriate, depending on the mass of products to be washed, according to a signal supplied by the washing machine and / or the signal of a temperature sensor installed in the machine tank and measuring the evolution of the water temperature during filling for an even more precise adaptation to the ideal conditions of the machine. operation of the machine and in the sense of optimizing the consumption of electrical energy.
  • the installation 100 is preferably housed in a single housing 160 having only a water inlet 161, a water outlet 162 and an electrical connection 163 showing on the front of the housing that the adjustment members 151 , 152 of the control circuit 160.
  • the installation 100 is advantageously located downstream of the stop valve RA equipping the point of use PU and the connection is made either on the rigid pipe or, more advantageously, by means of flexible hoses 164, 165 connecting the cold water inlet 161 to the water inlet pipe and the hot water outlet 162 to the inlet EC of the point of use PU.
  • the installation is divided into two housings 160a, 160b, one housing the water heating circuit 111, the anti-scaling device 120, the passage sensor 130 and the temperature sensor 140; the other part 160b houses the power generators 113, 123 supplying the two devices and the control circuit 150 to better adapt the installation of the installation 100 to specific congestion conditions.
  • the figure 2 shows an installation 200 which is a variant of the installation 100 of the figure 1 .
  • This installation 200 comprises substantially the same elements as those of the installation 100 and these elements have the same references so that their description will not be repeated.
  • This variant 200 differs from the previous one by a bypass 103 provided downstream of the anti-scaling device 120 and leading directly to the cold water outlet 166 connected by a pipe 167 to the cold water inlet EF of the use station PU, at the same time as the hot water supply EC coming from the pipe 165.
  • This pipe 103 is equipped with a water passage sensor 170 which supplies a cold water demand signal Sef, transmitted to the control circuit 150 for operating the anti-tart device 120 but not the water heater 110.
  • the latter can be started only by the dry signal sent by the water passage sensor 130.
  • the water heating circuit may be constituted by a coil provided with conductive plates where appropriate, heated by the inductor 112 to heat the coil and water. It is also possible to provide a heating circuit 111 consisting of two plates defining a small water flow interval, the plates being heated by the inductor 112 to heat conduction water passing between the plates.
  • the passage water heating circuit 211 consists of a housing-shaped enclosure 214 of a ferromagnetic material housing a coil 215 connected by an inlet connection 216 and an outlet connection 217 to the pipes 101, 102
  • the inductor 212 is applied against one of the faces of the housing 214.
  • the coil 215 housed in the housing 214 is in thermal contact with the faces of the housing.
  • the volume of the housing may further contain a ferromagnetic material in bulk in the form of beads or grains with optionally a heat transfer liquid filling so as to release the heat directly in contact with the coil. This will be heated by its contact with the faces of the housing and the material filling the volume between the coil 215 and the housing 214.
  • the housing is made of a non-ferromagnetic material and only the mass of bulk material in grains or balls in direct contact with the coil, is made of a ferromagnetic material.
  • the coil 215 is preferably made of copper like the other pipes 101, 102 of the installation.
  • the figure 4 shows a passage heating device 311 composed of a housing 314 provided with an inlet manifold 320 and an outlet manifold 321 respectively connected by an inlet connection 322 and an outlet connection 323 to the pipes 101, 102.
  • the inlet manifold 320 feeds the volume 316 of the housing containing an insert and the outlet manifold receives the heated water having passed through this volume.
  • the insert does not appear in this figure, is a piece of a ferromagnetic metal while the housing 314 may be copper or aluminum or an aluminum alloy, preferably coated externally with a thermal insulator.
  • the inductor is not shown in this figure.
  • FIGS 5A-5D Different examples of insert are represented in Figures 5A-5D . These inserts are placed in a volume such as the volume 316 of the housing 314 of the figure 4 . This volume generally comprises an input manifold and an unrepresented output collector.
  • the Figure 5A shows an insert 330 formed of a plate 331 provided with fins 332 on one side.
  • the assembly is made of ferromagnetic material.
  • the plate 331 and the fins 332 form chimneys with the walls of the casing 314 sketched by the contour in broken lines in which pass water streams which heat by conduction in contact with the wall and the fins.
  • the Figure 5B is a horizontal sectional view of an insert 340 in the form of a plate 341 bordered on its two faces by fins 342 delimiting chimneys with the casing 314. These chimneys are traversed by veins of water which are heated in contact with the insert 340.
  • the Figure 5C shows another example of insert 350 consisting of two plates 351 connected by partitions 352 so as to directly define chimneys.
  • the outer faces of the plates 351 are at a distance from the walls of the volume of the casing 314 and externally delimit water strips.
  • the set is crossed by nets and blades of water that heat in contact with the insert. Its mixed structure combines fireplaces and slats of water outside the chimneys.
  • the figure 5D shows another example of insert 360 constituted by a set of parallel plates 361 in a ferromagnetic material, kept apart from each other by means not shown, for example by studs for the assembly of the plates.
  • the plates 361 delimiting between them and with the walls of the housing 314, blades of water.
  • the figure 6 schematically shows another example of the heater constituted by insert 370 of a ferromagnetic material provided on each side of horizontal fins 371 delimiting a serpentine path (CS) between the inlet 374 in the lower part and the outlet 375 in the upper part.
  • the casing 314 is preferably made of a non-ferromagnetic material and the insert 370 is made of a ferromagnetic material.
  • the housing 314 is provided with an inlet manifold and an outlet manifold as figure 4 .
  • the water heating circuit 411 is constituted by a spiral coil 415. It is preferably a bent copper tube to form the spiral with an inlet 416 in the center and a tangential outlet 417.
  • the spiral 415 is provided on one face, and preferably on both sides, with a plate 414 made of a ferromagnetic material and the inductor 412 is applied against one of the faces.
  • This spiral shape has the advantage of being part of a circle and thus of adapting particularly well to a flat, circular cylindrical shape of the inductor 383.
  • the heating circuit 411 formed by the coil 415 is preferably a pipe of rectangular or square section, bent and wound in a spiral.
  • this heating circuit may also consist of welded parts, namely two plates on both sides and a spirally wound ribbon which defines the water circulation path between the two plates.
  • the usual orientation is the vertical orientation, the cold water coming from below and the hot water coming out from above while crossing more or less vertically the heating circuit casing, chimneys and slats of water or others.
  • the orientation can also be arbitrary and in particular the chimneys and the water blades can be inclined or even horizontal.
  • the heating circuit formed by the spiral coil which can be placed in a more or less vertical plane, but also in a horizontal plane.
  • the hot water instantaneous preparation system according to the invention is provided with thermal insulation means around the passage water heating device and the outlet water pipe so as to increase, on the one hand, efficiency of heating and secondly, avoid heating the cold water pipe these means are not detailed.
  • thermal insulation means around the passage water heating device and the outlet water pipe so as to increase, on the one hand, efficiency of heating and secondly, avoid heating the cold water pipe these means are not detailed.
  • Inlet water consists either of a small section pipe or of several parallel pipes forming chimneys or serpentine paths, through which the water is forced to pass under the effect of its pressure.
  • the cold water pipe 167 and the hot water pipe 165 are connected to a basin mixer LV or sink EV.
  • the equipment in the case of a supply of cold water and hot water from a washing machine or dishes, the equipment comprises valves installed upstream of the hot water outlets 162 and cold water 166 and which are controlled by the program of the ML washing machine or the MV dishwashing machine according to the hot / cold water requirements necessary for the execution of the washing program.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Induction Heating (AREA)
  • Washing And Drying Of Tableware (AREA)

Description

Domaine de l'invention Field of the invention

La présente invention concerne une installation de préparation instantanée d'eau chaude destinée à être branchée directement en amont d'un poste d'utilisation d'eau chaude (lavabo, évier, machine à laver), avec un branchement d'alimentation et un branchement de sortie d'eau comprenant :

  • un dispositif à induction de chauffage d'eau à passage comportant un circuit de chauffage équipé d'un inducteur alimenté par un générateur haute fréquence,
The present invention relates to an installation for instant hot water preparation intended to be connected directly upstream of a hot water use station (washbasin, sink, washing machine), with a power connection and a connection. water outlet comprising:
  • a passage water heating induction device comprising a heating circuit equipped with an inductor fed by a high frequency generator,

Etat de la techniqueState of the art

Il existe des dispositifs électriques de chauffage instantané d'eau chaude sanitaire équipant des lavabos, lave-mains ou éviers pour fournir directement de l'eau chaude, en général de l'eau chaude sanitaire, au point d'utilisation.There are electric devices for instantaneous heating of domestic hot water equipping washbasins, washbasins or sinks to directly supply hot water, usually hot water, at the point of use.

Les chauffe-eau électriques dits « instantanés » qui équipent les points d'utilisation tels que les lavabos ou les éviers sont en fait des chauffe-eau à accumulation de faible volume ce qui permet de les intégrer facilement près du point d'utilisation et de fournir de l'eau chaude à la température habituelle de l'eau chaude sanitaire pour de faibles quantités, sans que l'appareil ne soit d'une puissance électrique importante, nécessitant l'installation coûteuse d'un câble approprié.The so-called "instantaneous" electric water heaters that are used in points of use such as sinks or sinks are in fact low volume storage water heaters, which allows them to be easily integrated near the point of use and supply hot water at the normal temperature of domestic hot water for small quantities, without the device having a significant electrical power, requiring the costly installation of a suitable cable.

Dans le cas d'équipements électroménagers tels que des lave-linge ou des lave-vaisselle, les appareils sont alimentés en eau froide directement chauffée dans la cuve de l'appareil par une résistance.In the case of household appliances such as washing machines or dishwashers, the appliances are supplied with cold water directly heated in the tank of the apparatus by a resistance.

Enfin et de manière générale, il existe des installations de chauffe-eau électriques à accumulation qui ont de nombreux inconvénients tant de réalisation, de coût que de fonctionnement. Les chauffe-eau sont souvent loin des points d'utilisation de sorte que pour disposer de l'eau chaude à la température voulue, il faut attendre que les tuyaux se vident de l'eau froide avant de recevoir l'eau chaude. Ces chauffe-eau électriques doivent être maintenus à une température de 65-70° pour éviter la formation de bactéries comme cela a été constaté au cours des dernières années et lorsque l'eau est utilisée à une température inférieure à celle de l'accumulateur, ce qui est souvent voire généralement le cas, il faut ajouter de l'eau froide pour mitiger et abaisser la température de l'eau ce qui correspond à une perte d'énergie par chauffage de l'eau.Finally, and in general, there are electric storage water heater installations that have numerous drawbacks as much in terms of construction, cost and operation. Water heaters are often far from the point of use so that to get the hot water to the desired temperature, it is necessary to wait until the pipes empty of cold water before receiving the hot water. These electric water heaters must be maintained at a temperature of 65-70 ° to avoid the formation of bacteria as has been found in recent years and when the water is used at a lower temperature than the accumulator, which is often, if not usually the case, must be added cold water to mitigate and lower the temperature of the water which corresponds to a loss of energy by heating water.

Dans ces accumulateurs à chauffage électrique, comme d'ailleurs dans les appareils tels que les lave-vaisselle ou les lave-linge, le tartre s'accumule sur la résistance qu'il faut remplacer régulièrement par l'intervention d'un spécialiste.In these electrically heated accumulators, as well as in appliances such as dishwashers or washing machines, tartar accumulates on the resistance, which must be replaced regularly by the intervention of a specialist.

Il existe des chauffe-eau à induction utilisés pour fournir de l'eau chaude régulée à une température précise, pour des usages sanitaires ou des chauffe-eau délivrant une dose précise d'eau chaude à une température donnée pour des préparations alimentaires.There are induction heaters used to provide regulated hot water at a precise temperature for sanitary purposes or water heaters delivering a precise amount of hot water at a given temperature for food preparations.

Ainsi :

  • Le document FR 2 544 472 décrit un chauffe-eau selon le préambule de la revendication 1, un chauff-eau à induction à commande électromagnétique comportant un corps de chauffe à induction traversé par l'eau froide à chauffer. Le chauffe-eau se compose en entrée d'une électrovanne double alimentant, soit le corps de chauffe, soit directement le robinet de sortie. Le fonctionnement du chauffe-eau et de la distribution d'eau se font à l'aide d'un tableau de commande qui comporte un bouton d'appel d'eau froide, un bouton d'appel d'eau chaude, des boutons de réglage de la température de l'eau chaude et un bouton d'arrêt du générateur haute fréquence.
So :
  • The document FR 2 544 472 discloses a water heater according to the preamble of claim 1, an electromagnetically controlled induction water heater comprising an induction heater body traversed by the cold water to be heated. The water heater is composed of a double solenoid valve supplying either the heating element or directly the outlet valve. The operation of the water heater and water distribution is done using a control panel that includes a cold water call button, a hot water call button, hot water temperature setting and a high frequency generator stop button.

L'utilisateur doit d'abord appeler l'eau froide ou l'eau chaude par le tableau de commande, le robinet lui permettant simplement de réguler le débit d'eau en sortie sans commander la marche et l'arrêt du chauffe-eau. Ce fonctionnement ne peut être déclenché qu'en actionnant préalablement la touche d'appel d'eau froide ou d'eau chaude et dans le cas de l'eau chaude, par le réglage de la température vis-à-vis de la température affichée d'emblée qui est celle de l'eau à l'entrée du corps de chauffe.The user must first call cold water or hot water through the control panel, the tap simply allowing him to regulate the output water flow without controlling the operation and shutdown of the water heater. This operation can only be triggered by pressing the cold or hot water call button and, in the case of hot water, by setting the temperature to the displayed temperature. from the outset that is that of the water at the entrance of the heating body.

Il s'agit donc d'un fonctionnement relativement complexe pour une installation elle-même complexe. Ce chauffe-eau ne peut fonctionner par simple manoeuvre du robinet de puisage.It is therefore a relatively complex operation for a complex installation itself. This water heater can not operate by simple operation of the tap.

Le document FR 2 685 760 concerne un appareil de distribution d'eau chaude instantanée, fournissant de petites doses d'eau chaude à une température préréglée et servant à la dissolution d'une poudre alimentaire telle qu'une poudre de café, pour former une boisson chaude.The document FR 2,685,760 relates to an instant hot water dispensing apparatus, providing small doses of hot water at a pre-set temperature and for dissolving a food powder such as a coffee powder, to form a hot beverage.

Cet appareil comporte un réservoir d'eau dans lequel est prélevée la petite dose d'eau qu'il faut chauffer. Le problème traité par cet appareil, est celui de la fourniture de l'eau qui est immédiatement à la température souhaitée sans que la température de l'eau fournie ne s'élève progressivement, par exemple, de la température ambiante à la température finale cela est nécessaire pour que la dose d'eau prélevée soit, homogène, à la température requise.This device has a water tank in which is taken the small amount of water that must be heated. The problem dealt with by this apparatus is that of supplying the water which is immediately at the desired temperature without the temperature of the supplied water rising. progressively, for example, from room temperature to the final temperature this is necessary so that the dose of water taken is homogeneous, at the required temperature.

Pour cela, l'appareil se commande à l'aide d'une manette qui simule le puisage de la dose d'eau chaude en démarrant le chauffage. Mais en fait, la distribution d'eau est temporisée jusqu'à ce que la dose prélevée dans le réservoir soit chauffée à la bonne température par le dispositif de chauffage par induction. Ce n'est qu'à ce moment que la vanne libère la dose d'eau chaude.For this, the device is controlled using a joystick that simulates the drawing of the hot water dose by starting the heating. But in fact, the water supply is timed until the dose taken from the tank is heated to the correct temperature by the induction heater. Only then does the valve release the hot water dose.

Un tel appareil à eau chaude par induction, ne peut constituer une source d'eau chaude sanitaire destinée à alimenter en continu un point de puisage tel qu'un lavabo ou un appareil électroménager fonctionnant avec de l'eau chaude.Such a hot water induction device, can not be a hot water source for continuously supplying a point of drawing such as a sink or a household appliance operating with hot water.

But de l'inventionPurpose of the invention

La présente invention a pour but de développer une installation de préparation instantanée d'eau chaude, qui se mette facilement en place et soit d'une réalisation simple et efficace pour fournir de l'eau chaude tout en évitant le dépôt de tartre et ses conséquences.The object of the present invention is to develop an installation for the instantaneous preparation of hot water, which is easily put in place and is of a simple and effective embodiment to provide hot water while avoiding scale deposition and its consequences. .

Exposé et avantageas de l'inventionDescription and advantages of the invention

A cet effet, la présente invention concerne une installation du type défini ci-dessus caractérisée en ce qu'elle comprend,

  1. A) un dispositif antitartre électromagnétique en amont du circuit de chauffage alimenté par un générateur de fréquence,
  2. B) un capteur de passage détectant une demande d'eau chaude par ouverture d'un robinet ou d'un clapet au niveau du poste d'utilisation ou l'arrêt de la demande,
  3. C) une conduite de dérivation en aval du dispositif antitartre, dérivation équipée d'un capteur de passage d'eau fournissant un signal de demande d'eau froide,
  4. D) un circuit de commande recevant d'une part le signal de demande d'eau chaude (Sec) du capteur de passage pour commander le fonctionnement du circuit de chauffage et du dispositif antitartre, régler la puissance alimentant le dispositif de chauffage pour en régler la température et arrêter leur fonctionnement, et d'autre part le signal du capteur de passage d'eau pour commander la fonction du dispositif antitartre sans mettre en oeuvre le dispositif de chauffage d'eau.
For this purpose, the present invention relates to an installation of the type defined above characterized in that it comprises,
  1. A) an electromagnetic antiscale device upstream of the heating circuit powered by a frequency generator,
  2. B) a passage sensor detecting a request for hot water by opening a valve or a valve at the use station or stopping the request,
  3. C) a bypass line downstream of the anti-scale device, bypass equipped with a water passage sensor providing a cold water demand signal,
  4. D) a control circuit receiving on the one hand the hot water demand signal (Sec) from the passage sensor for controlling the operation of the heating circuit and the anti-scale device, adjusting the power supply to the heating device to adjust it the temperature and stop their operation, and secondly the signal of the water passage sensor to control the function of the anti-scale device without implementing the water heater.

L'installation de préparation instantanée d'eau chaude par induction selon l'invention offre l'avantage d'être une installation d'une réalisation et d'un fonctionnement particulièrement simple permettant une diversité d'applications. Le fonctionnement de l'installation est quasi automatique. Une fois la température de consigne réglée comme cela se fait sur un chauffe-eau électrique, l'appareil fonctionne automatiquement par la simple ouverture du robinet de puisage et s'arrête avec sa fermeture. L'installation a l'avantage de combiner le passage de l'eau froide et celui de l'eau à chauffer à travers le dispositif antitartre, de sorte qu'un même appareil d'installation particulièrement simple qui ne nécessite que le branchement sur la conduite d'arrivée et le branchement sur la ou les conduites de sortie (eau chaude et le cas échéant eau froide), ainsi que le raccordement électrique, peut ainsi se monter à proximité immédiate du point d'utilisation. Comme l'eau chaude sanitaire n'est pas nécessairement demandée à une température extrêmement précise, mais à la température habituelle de l'eau chaude sanitaire, il importe peu que dès l'arrivée de l'eau, celle-ci soit immédiatement à la température de consigne ou qu'elle passe progressivement mais très rapidement à cette température, d'autant plus qu'il y a le volume mort inévitable entre l'installation de préparation d'eau chaude et la sortie du robinet de puisage. La simplicité de la conception, de la réalisation et de l'utilisation de cette installation, est liée en grande partie aux capteurs de passage détectant la demande d'eau chaude et la demande d'eau froide.The installation of instantaneous hot induction water preparation according to the invention offers the advantage of being an installation of a realization and a particularly simple operation allowing a variety of applications. The operation of the installation is almost automatic. Once the set temperature is set as it is done on an electric water heater, the appliance operates automatically by simply opening the tap and stops with its closing. The installation has the advantage of combining the passage of cold water and that of the water to be heated through the anti-scaling device, so that a single installation apparatus particularly simple which requires only the connection on the supply line and the connection to the outlet line (hot water and, if necessary, cold water), as well as the electrical connection, can thus be installed in the immediate vicinity of the point of use. Since domestic hot water is not necessarily required at an extremely precise temperature, but at the usual temperature of the domestic hot water, it does not matter that immediately after the arrival of the water, it is immediately at the setpoint temperature or it passes gradually but very quickly at this temperature, especially since there is inevitable dead volume between the hot water preparation plant and the outlet of the tap. The simplicity of the design, construction and use of this installation is largely related to the passage sensors detecting the demand for hot water and the demand for cold water.

Ces capteurs de passage sont intégrés dans l'installation et n'ont pas à être installés au niveau du point de puisage (robinet d'eau chaude, robinet d'eau froide ou mitigeur). Seul le débit d'eau demandé est détecté par le capteur de passage.These passage sensors are integrated in the installation and do not have to be installed at the point of drawing (hot water tap, cold water tap or mixing valve). Only the requested water flow is detected by the passage sensor.

Par ces simples capteurs, on commande efficacement la mise en oeuvre des moyens de chauffage ou leur non-mise en oeuvre, avec dans chaque cas passage dans le dispositif antitartre.By these simple sensors, it effectively controls the implementation of the heating means or their non-implementation, with in each case passing through the anti-scaling device.

L'installation de préparation instantanée d'eau chaude peut être facilement montée dans la conduite d'alimentation d'un point d'eau tel que la conduite reliée à un mitigeur de lavabo ou au robinet d'eau chaude, par exemple en dérivation du tuyau d'eau froide, d'autant plus que le branchement amont et le branchement aval de l'installation peuvent être reliés à la conduite d'arrivée et à celle d'entrée du poste d'utilisation par des tuyaux souples pour utiliser au mieux la place souvent très réduite disponible au voisinage du poste d'utilisation, sous le lavabo ou l'évier ou dans la machine à laver le linge ou la vaisselle. Comme cette installation constitue un bloc qui ne nécessite que le branchement de l'arrivée et de la sortie d'eau et celui de l'alimentation électrique, en cas de panne, l'installation se démonte facilement et simplement pour être remplacée très rapidement par une autre installation du même type.The instantaneous hot water preparation plant can be easily mounted in the supply line of a water point such as the pipe connected to a basin mixer or the hot water tap, for example bypassing the cold water pipe, especially since the upstream and downstream connections of the installation can be connected to the incoming and outgoing pipes of the use station by flexible pipes to make the best possible use the often limited space available in the vicinity of the use station, under the sink or sink or in the washing machine or dishes. As this installation constitutes a block which only requires the connection the arrival and the exit of water and that of the electrical supply, in the event of breakdown, the installation dismounts easily and simply to be replaced very quickly by another installation of the same type.

Le traitement de l'eau par le dispositif antitartre en amont du circuit de chauffage d'eau y évite le dépôt de tartre et, dans le cas d'une installation comportant également une sortie d'eau froide dérivée de la conduite en aval du dispositif antitartre et en amont du dispositif de chauffage d'eau, on évite le dépôt de tartre dans cette partie de conduite et dans le point d'utilisation.Treatment of the water by the anti-scale device upstream of the water heating circuit avoids the deposit of scale and, in the case of an installation also comprising a cold water outlet derived from the pipe downstream of the device antitartre and upstream of the water heating device, it avoids the deposit of scale in this part of pipe and in the point of use.

La consommation en énergie électrique de l'installation est très réduite puisque qu'il n'y a pas de déperdition liée au stockage d'eau chaude, le chauffage de l'eau étant quasi instantané et se faisant par passage; le circuit de chauffage d'eau, avantageusement dimensionné en fonction du débit prévisible, permet de fournir de l'eau chauffée par induction, à la bonne température et de façon quasi instantanée. La fermeture du robinet ou de la valve ou vanne de puisage d'eau chaude est automatiquement détectée par le détecteur de passage qui commande l'arrêt du chauffage de l'eau et du dispositif de traitement antitartre et constitue aussi une sécurité.The electrical energy consumption of the installation is very low since there is no loss associated with the storage of hot water, the heating of the water being almost instantaneous and passing by; the water heating circuit, advantageously sized according to the predicted flow rate, allows to provide water heated by induction, at the right temperature and almost instantaneously. The closing of the faucet or the hot water tap or valve is automatically detected by the passage detector which controls the shutdown of the water heater and the anti-scale treatment device and is also a safety feature.

Suivant une autre caractéristique avantageuse, le circuit de chauffage d'eau avec son inducteur et le dispositif antitartre sont logés dans un boîtier relié à un boîtier électrique comportant le générateur alimentant l'inducteur du circuit de chauffage, le générateur du dispositif antitartre et le circuit de commande.According to another advantageous characteristic, the water heating circuit with its inductor and the anti-scale device are housed in a housing connected to an electrical box comprising the generator supplying the inductor of the heating circuit, the generator of the anti-scaling device and the circuit control.

La séparation entre les éléments directement installés sur le passage de l'eau et les moyens électriques et électroniques qui alimentent et commandent ces éléments dans un boîtier différent, offre une plus grande souplesse de mise en place pour tenir compte de certaines contraintes d'encombrement particulières.The separation between the elements directly installed on the passage of water and the electrical and electronic means which supply and control these elements in a different housing, offers a greater flexibility of implementation to take into account certain constraints of particular dimensions .

Suivant une autre caractéristique avantageuse, l'installation comporte un boîtier muni d'un raccord amont et d'un raccord aval pour le branchement de l'installation sur la canalisation d'eau alimentant le poste d'utilisation et un bornier pour le branchement de la ligne électrique. Le cas échéant, il est également prévu une sortie d'eau froide qui ne sera passée que dans le dispositif antitartre.According to another advantageous characteristic, the installation comprises a housing provided with an upstream connection and a downstream connection for the connection of the installation to the water pipe supplying the utilization station and a terminal block for the connection of the the power line. If necessary, it is also provided a cold water outlet which will be passed in the anti-scaling device.

Dans ce cas, l'installation constitue un ensemble pratiquement fermé, n'ayant d'accessibles que les éléments de réglage tels qu'un bouton de réglage de température et/ou un bouton marche-arrét ; le boîtier s'installe tel quel dans la conduite d'alimentation du poste d'utilisation, par exemple directement sous le lavabo, ou à côté de la douche ou encore sous un évier et/ou dans une machine à laver le linge ou la vaisselle. Il suffit d'effectuer trois branchements : le raccord amont pour l'arrivée, le raccord aval pour sa sortie d'eau et le branchement électrique.In this case, the installation constitutes a virtually closed assembly, having access to only the adjustment elements such as a temperature control knob and / or a start-stop button; The box installs as is in the supply line of the use station, for example directly under the sink, or next to the shower or under a sink and / or in a washing machine or dishes. Just make three connections: the upstream connection for the inlet, the downstream connection for its water outlet and the electrical connection.

Suivant une autre caractéristique avantageuse, le circuit de chauffage est un circuit choisi parmi les circuits suivants :

  • un serpentin en un matériau ferromagnétique,
  • un serpentin en un matériau ferromagnétique au contact d'une plaque de matériau ferromagnétique,
  • une lame d'eau définie entre deux plaques en un matériau ferromagnétique,
  • un serpentin en un matériau non-ferromagnétique en contact avec une ou deux plaques en un matériau ferromagnétique.
According to another advantageous characteristic, the heating circuit is a circuit selected from the following circuits:
  • a coil of ferromagnetic material,
  • a coil made of a ferromagnetic material in contact with a plate of ferromagnetic material,
  • a blade of water defined between two plates made of a ferromagnetic material,
  • a coil of a non-ferromagnetic material in contact with one or two plates of a ferromagnetic material.

Le circuit de chauffage dans ses différentes formes de réalisation, est directement relié à l'arrivée d'eau froide de sorte que le circuit de chauffage est toujours rempli d'eau et dès la mise en route du générateur haute fréquence, l'induction peut chauffer l'eau dans le circuit de chauffage.The heating circuit in its various embodiments, is directly connected to the cold water inlet so that the heating circuit is always filled with water and as soon as the high frequency generator is switched on, induction can heat the water in the heating circuit.

Les différentes formes de réalisation du circuit de chauffage comme serpentin en un matériau ferromagnétique ou au contact d'un matériau ferromagnétique constituant l'inducteur qui sera chauffé par les courants de Foucault induits par l'inducteur, assurent efficacement le chauffage directement et/ou par conduction.The various embodiments of the heating circuit as a coil made of a ferromagnetic material or in contact with a ferromagnetic material constituting the inductor which will be heated by the eddy currents induced by the inductor, effectively provide heating directly and / or by conduction.

Suivant une caractéristique avantageuse le circuit de chauffage est logé dans un boîtier et le volume libre entre le circuit de chauffage et le boîtier est rempli d'un matériau ferromagnétique en vrac. Le matériau ferromagnétique est ainsi directement en contact avec une surface importante du serpentin ou des plaques qui peuvent être en un matériau ferromagnétique ou non, de sorte que le passage de la chaleur par conduction est extrêmement efficace.According to an advantageous characteristic, the heating circuit is housed in a housing and the free volume between the heating circuit and the housing is filled with a ferromagnetic material in bulk. The ferromagnetic material is thus directly in contact with a large surface of the coil or plates which may be of a ferromagnetic material or not, so that the passage of heat by conduction is extremely effective.

Suivant une variante, le matériau ferromagnétique en vrac est en plus immergé dans un liquide caloporteur améliorant d'autant la conduction thermique.Alternatively, the bulk ferromagnetic material is further immersed in a heat transfer liquid improving all the thermal conduction.

Suivant une autre caractéristique, le circuit de chauffage est constitué par un boîtier logeant un insert en un matériau ferromagnétique exposé au champ ferromagnétique haute fréquence de l'inducteur.According to another characteristic, the heating circuit is constituted by a housing housing an insert made of a ferromagnetic material exposed to the high frequency ferromagnetic field of the inductor.

Le boîtier logeant l'insert est de préférence en un matériau non-ferromagnétique par exemple en cuivre ou en aluminium.The housing housing the insert is preferably made of a non-ferromagnetic material, for example copper or aluminum.

Suivant des modes de réalisation particulièrement avantageux,
l'insert est un élément choisi dans le groupe comprenant :

  • une plaque munie d'ailettes sur une face,
  • une plaque munie d'ailettes sur ses deux faces,
  • une double plaque reliée par des ailettes,
  • un ensemble de plaques parallèles définissant des lames d'eau.
According to particularly advantageous embodiments,
the insert is a member selected from the group consisting of:
  • a plate with fins on one side,
  • a plate with wings on both sides,
  • a double plate connected by fins,
  • a set of parallel plates defining blades of water.

L'insert ainsi réalisé a l'avantage d'être chauffé directement par induction et d'échanger la chaleur avec le milieu dans lequel il est immergé, c'est-à-dire l'eau à chauffer. La conduction thermique et de manière générale l'échange de chaleur, se fait d'une manière particulièrement efficace grâce aux formes de cheminées délimitées par la plaque, les ailettes et l'enceinte formée du boîtier, de sorte que l'eau à réchauffer est efficacement répartie entre les différentes cheminées et se présente sous la forme de minces filets particulièrement efficaces à chauffer.The insert thus produced has the advantage of being heated directly by induction and of exchanging heat with the medium in which it is immersed, that is to say the water to be heated. The thermal conduction and, in general, the heat exchange, is particularly efficient thanks to the chimney shapes delimited by the plate, the fins and the enclosure formed of the housing, so that the water to be heated is effectively distributed between the different chimneys and is in the form of thin nets particularly effective to heat.

Suivant une autre caractéristique, le boîtier est en un métal non-ferromagnétique tel que du cuivre ou de l'aluminium.According to another feature, the housing is made of a non-ferromagnetic metal such as copper or aluminum.

Selon une variante, le circuit de commande est équipé d'un récepteur infrarouge IR ou radio fréquence RF pour être commandé par des signaux d'un émetteur infrarouge IR ou radio fréquence RF permettant de régler à distance la température de l'eau sans intervenir directement sur le boîtier. Cette solution peut venir en complément du bouton de réglage équipant le boîtier de commande.According to one variant, the control circuit is equipped with an IR or RF radio frequency receiver to be controlled by signals from an infrared IR or radio frequency RF transmitter making it possible to adjust the water temperature remotely without directly intervening. on the case. This solution can come in addition to the control knob on the control box.

Dessinsdrawings

La présente invention sera décrite ci-après de manière plus détaillée à l'aide des dessins annexés dans lesquels :

  • la figure 1 est un schéma d'un mode de réalisation d'une installation de préparation instantanée d'eau chaude, et
  • la figure 2 est un schéma d'une variante de réalisation de l'installation de préparation instantanée d'eau chaude selon l'invention,
  • la figure 3 est une vue en perspective schématique d'un premier mode de réalisation d'un dispositif de chauffage,
  • la figure 4 est une vue schématique en perspective d'un second mode de réalisation d'un dispositif de chauffage,
  • les figures 5A, 5B, 5C, 5D sont des vues schématiques de différentes formes d'insert pour un dispositif de chauffage à savoir :
    • * la figure 5A est une vue en perspective d'un insert simple à ailettes,
    • * la figure 5B est une vue en coupe horizontale d'un insert à ailettes sur ses deux faces placées dans un boîtier.
    • * la figure 5C est une vue en coupe horizontale d'un insert formé de deux plaques reliées par des ailettes délimitant des cheminées.
    • * la figure 5D est une coupe horizontale d'un insert formé d'un assemblage de plaques délimitant entre-elles des lames d'eau.
  • la figure 6 est une vue en perspective schématique d'une autre variante de réalisation du dispositif de chauffage formant un chemin de circulation d'eau en serpentin,
  • les figures 7A, 7B montrent un autre mode de réalisation d'un dispositif de chauffage formé d'une conduite enroulée en hélice, dans laquelle,
    • * la figure 7A est une vue de face du dispositif de chauffage,
    • * la figure 7B est une vue en coupe du dispositif de chauffage.
The present invention will be described hereinafter in more detail with the aid of the accompanying drawings in which:
  • the figure 1 is a diagram of an embodiment of an instant hot water preparation plant, and
  • the figure 2 is a diagram of an alternative embodiment of the hot water instantaneous preparation installation according to the invention,
  • the figure 3 is a schematic perspective view of a first embodiment of a heating device,
  • the figure 4 is a schematic perspective view of a second embodiment of a heating device,
  • the FIGS. 5A, 5B, 5C, 5D are schematic views of different forms of insert for a heating device namely:
    • * the Figure 5A is a perspective view of a single winged insert,
    • * the Figure 5B is a horizontal sectional view of a winged insert on both sides placed in a housing.
    • * the Figure 5C is a horizontal sectional view of an insert formed of two plates connected by fins delimiting chimneys.
    • * the figure 5D is a horizontal section of an insert formed of an assembly of plates delimiting between them blades of water.
  • the figure 6 is a schematic perspective view of another alternative embodiment of the heating device forming a serpentine water circulation path,
  • the Figures 7A, 7B show another embodiment of a heating device formed of a helically wound pipe, in which,
    • * the Figure 7A is a front view of the heater,
    • * the Figure 7B is a sectional view of the heater.

Description des modes de réalisationDescription of the embodiments

Selon la figure 1, l'installation 100 de préparation instantanée d'eau chaude, notamment d'eau chaude sanitaire est destinée à être branchée directement en amont d'un poste d'utilisation PU ou dans celui-ci. Le poste d'utilisation PU est un lavabo ou lave-mains LV, un évier EV, une machine à laver le linge ML ou une machine à laver la vaisselle MV. Les différents postes d'utilisation consomment de l'eau chaude à des températures particulières, adaptées à leur fonctionnement.According to figure 1 , the installation 100 instant hot water preparation, in particular domestic hot water is intended to be connected directly upstream of a user station PU or in it. The PU use station is a LV washbasin or washbasin, an EV sink, a ML washing machine or a MV dishwashing machine. The various use stations consume hot water at particular temperatures, adapted to their operation.

L'installation 100 se compose d'un dispositif de chauffage d'eau à passage 110, traversé par la veine d'eau 101 à chauffer. Il comporte un circuit de chauffage 111 équipé d'un inducteur 112 alimenté par un générateur haute fréquence 113.The installation 100 consists of a water heater passage 110, crossed by the water vein 101 to be heated. It comprises a heating circuit 111 equipped with an inductor 112 powered by a high frequency generator 113.

Le circuit 111 a une longueur suffisante pour chauffer l'eau au cours de son passage dans le circuit exposé à l'inducteur 112. Le circuit 111 et l'inducteur 112 sont dimensionnés en fonction de paramètres moyens tels que le débit moyen d'eau, sa variation dans une plage de débit et une plage de température, de façon à optimiser la puissance électrique installée.The circuit 111 has a sufficient length to heat the water during its passage in the circuit exposed to the inductor 112. The circuit 111 and the inductor 112 are sized according to average parameters such as the average flow of water , its variation in a flow rate range and a temperature range, so as to optimize the installed electrical power.

Le circuit de chauffage 111 est précédé en amont selon le sens de passage de l'eau à chauffer, d'un dispositif électromagnétique antitartre 120 générant un champ électromagnétique variable pour modifier la structure stéréochimique du carbonate de calcium contenu dans l'eau pour éviter son dépôt sous la forme de tartre. Le dispositif antitartre 120 comporte un générateur 123 fournissant un signal électrique alimentant le système électromagnétique générant le champ électromagnétique 122 appliqué à l'eau passant dans la conduite 121.The heating circuit 111 is preceded upstream in the direction of passage of the water to be heated, an electromagnetic anti-scaling device 120 generating a variable electromagnetic field to modify the stereochemical structure of calcium carbonate contained in water to prevent its deposition in the form of scale. The anti-scaling device 120 comprises a generator 123 providing an electrical signal supplying the electromagnetic system generating the electromagnetic field 122 applied to the water passing through the pipe 121.

L'installation comporte également un capteur de passage d'eau 130 fournissant un signal Sec en fonction du passage d'eau dans l'installation, c'est-à-dire suivant que l'eau circule ou est arrêtée et, de préférence, en fonction aussi du débit d'eau. Le capteur de passage d'eau 130 est un capteur de pression relié à la conduite d'eau 102 passant dans le boîtier 160 et détectant la variation de pression à l'ouverture et à la fermeture du robinet de puisage du point d'utilisation PU ou encore un capteur associé à un diaphragme monté dans la conduite et fournissant un signal représentant non seulement un débit d'eau (passage d'eau/arrét du passage d'eau) mais aussi l'importance du débit pour régler la puissance fournie au dispositif de chauffage 110.The installation also comprises a water passage sensor 130 providing a signal Sec as a function of the water passage in the installation, that is to say according to whether the water circulates or is stopped and, preferably, depending also on the water flow. The water passage sensor 130 is a pressure sensor connected to the water pipe 102 passing through the housing 160 and detecting the variation in pressure at the opening and closing of the tap of the point of use PU or a sensor associated with a diaphragm mounted in the pipe and providing a signal representing not only a flow of water (water passage / stop the water passage) but also the importance of flow to adjust the power supplied to the heating device 110.

Le capteur de passage d'eau 130 est avantageusement combiné à un capteur de température 140 détectant la température de l'eau à la sortie de l'installation 100 pour asservir la puissance électrique fournie à une température de consigne Tc et cela quel que soit le débit d'eau puisé.The water passage sensor 130 is advantageously combined with a temperature sensor 140 detecting the temperature of the water at the outlet of the installation 100 to control the electrical power supplied to a set temperature Tc and this whatever the pulsed water flow.

Le dispositif de chauffage à induction 110, le dispositif antitartre 120 et le capteur de passage d'eau 130 et le capteur de température 140 sont reliés à un circuit de commande 150 gérant le fonctionnement de l'installation 100 selon la demande d'eau chaude (demande d'eau chaude, arrêt, température de consigne de l'eau chaude).The induction heating device 110, the anti-scale device 120 and the water passage sensor 130 and the temperature sensor 140 are connected to a control circuit 150 that manages the operation of the plant 100 according to the hot water demand. (hot water demand, off, hot water set temperature).

Le circuit de commande 150 contient le programme de fonctionnement avec les paramètres réglables dont la valeur se règle au moment de la mise en place de l'installation suivant des caractéristiques générales ou selon le fonctionnement particulier demandé.The control circuit 150 contains the operating program with the adjustable parameters whose value is set at the time of installation of the installation according to general characteristics or according to the particular operation required.

Dans le cas d'un lavabo LV, la température de l'eau fournie sera inférieure à la température de 65-70°C, imposée aux chauffe-eau traditionnels à réserve d'eau chaude ; elle pourra être à la température d'utilisation sans nécessiter de dosage avec de l'eau froide, par exemple une température de 40-50°C.In the case of a LV basin, the temperature of the supplied water will be lower than the temperature of 65-70 ° C, imposed on traditional water heaters with hot water supply; it may be at the temperature of use without requiring dosing with cold water, for example a temperature of 40-50 ° C.

Dans le cas d'un évier EV, la température de consigne pourra être plus élevée que celle de l'eau chaude alimentant un lavabo.In the case of an EV sink, the set temperature may be higher than that of the hot water supplying a sink.

Pour un appareil de lavage tel qu'un lave-vaisselle MV ou un lave-linge ML, la température de consigne sera donnée par le programme de lavage et, le cas échéant, en fonction de la masse de produits à laver, suivant un signal fourni par la machine à laver et/ou le signal d'un capteur de température installé dans la cuve de la machine et mesurant l'évolution de la température de l'eau au cours du remplissage pour une adaptation encore plus précise aux conditions idéales de fonctionnement de la machine et dans le sens d'une optimisation de la consommation d'énergie électrique.For a washing apparatus such as a dishwasher MV or washing machine ML, the set temperature will be given by the washing program and, if appropriate, depending on the mass of products to be washed, according to a signal supplied by the washing machine and / or the signal of a temperature sensor installed in the machine tank and measuring the evolution of the water temperature during filling for an even more precise adaptation to the ideal conditions of the machine. operation of the machine and in the sense of optimizing the consumption of electrical energy.

L'installation 100 est, de préférence, logée dans un boîtier unique 160 ne comportant qu'une entrée d'eau 161, une sortie d'eau 162 et un branchement électrique 163 ne laissant apparaître en façade du boîtier que les organes de réglage 151, 152 du circuit de commande 160.The installation 100 is preferably housed in a single housing 160 having only a water inlet 161, a water outlet 162 and an electrical connection 163 showing on the front of the housing that the adjustment members 151 , 152 of the control circuit 160.

L'installation 100 se place avantageusement en aval du robinet d'arrêt RA équipant le point d'utilisation PU et le raccordement se fait soit sur le tuyau rigide soit, plus avantageusement, par l'intermédiaire de tuyaux souples 164, 165 reliant l'entrée d'eau froide 161 au tuyau d'arrivée d'eau et la sortie d'eau chaude 162 à l'entrée EC du point d'utilisation PU.The installation 100 is advantageously located downstream of the stop valve RA equipping the point of use PU and the connection is made either on the rigid pipe or, more advantageously, by means of flexible hoses 164, 165 connecting the cold water inlet 161 to the water inlet pipe and the hot water outlet 162 to the inlet EC of the point of use PU.

Selon une variante, l'installation est répartie en deux boitiers 160a, 160b, l'un logeant le circuit de chauffage d'eau 111, le dispositif antitartre 120, le capteur de passage 130 et le capteur de température 140 ; l'autre partie 160b loge les générateurs de puissance 113, 123 alimentant les deux dispositifs et le circuit de commande 150 pour pouvoir mieux adapter le montage de l'installation 100 à des conditions d'encombrement particulières.According to a variant, the installation is divided into two housings 160a, 160b, one housing the water heating circuit 111, the anti-scaling device 120, the passage sensor 130 and the temperature sensor 140; the other part 160b houses the power generators 113, 123 supplying the two devices and the control circuit 150 to better adapt the installation of the installation 100 to specific congestion conditions.

La figure 2 montre une installation 200 qui est une variante de l'installation 100 de la figure 1. Cette installation 200 comporte pratiquement les mêmes éléments que ceux de l'installation 100 et ces éléments ont les mêmes références de sorte que leur description ne sera pas reprise.The figure 2 shows an installation 200 which is a variant of the installation 100 of the figure 1 . This installation 200 comprises substantially the same elements as those of the installation 100 and these elements have the same references so that their description will not be repeated.

Cette variante 200 diffère de la précédente par une dérivation 103 prévue en aval du dispositif antitartre 120 et aboutissant directement à la sortie d'eau froide 166 reliée par une conduite 167 à l'entrée d'eau froide EF du poste d'utilisation PU, en même temps que l'arrivée d'eau chaude EC venant de la conduite 165.This variant 200 differs from the previous one by a bypass 103 provided downstream of the anti-scaling device 120 and leading directly to the cold water outlet 166 connected by a pipe 167 to the cold water inlet EF of the use station PU, at the same time as the hot water supply EC coming from the pipe 165.

Cette conduite 103 est équipée d'un capteur de passage d'eau 170 qui fournit un signal de demande d'eau froide Sef, transmis au circuit de commande 150 pour mettre en oeuvre le dispositif antitartre 120 mais non le dispositif de chauffage d'eau 110.This pipe 103 is equipped with a water passage sensor 170 which supplies a cold water demand signal Sef, transmitted to the control circuit 150 for operating the anti-tart device 120 but not the water heater 110.

Ce dernier ne peut être mis en marche que par le signal Sec envoyé par le capteur de passage d'eau 130.The latter can be started only by the dry signal sent by the water passage sensor 130.

Selon des variantes non représentées, le circuit de chauffage d'eau peut être constitué par un serpentin muni le cas échéant de plaques conductrices, chauffées par l'inducteur 112 pour chauffer le serpentin et l'eau. Il est également possible de réaliser un circuit de chauffage 111 constitué par deux plaques délimitant un faible intervalle de passage de l'eau, les plaques étant chauffées par l'inducteur 112 pour chauffer par conduction l'eau passant entre les plaques.According to variants not shown, the water heating circuit may be constituted by a coil provided with conductive plates where appropriate, heated by the inductor 112 to heat the coil and water. It is also possible to provide a heating circuit 111 consisting of two plates defining a small water flow interval, the plates being heated by the inductor 112 to heat conduction water passing between the plates.

D'autres formes de dispositifs de chauffage d'eau 110 seront décrites à l'aide des figures 3 à 7B.Other forms of water heating devices 110 will be described using the Figures 3 to 7B .

Selon la figure 3, le circuit de chauffage d'eau à passage 211 se compose d'une enceinte en forme de boîtier 214 en un matériau ferromagnétique logeant un serpentin 215 relié par un raccord d'entrée 216 et par un raccord de sortie 217 aux conduites 101, 102. L'inducteur 212 est appliqué contre l'une des faces du boîtier 214.According to figure 3 , the passage water heating circuit 211 consists of a housing-shaped enclosure 214 of a ferromagnetic material housing a coil 215 connected by an inlet connection 216 and an outlet connection 217 to the pipes 101, 102 The inductor 212 is applied against one of the faces of the housing 214.

Le serpentin logé 215 dans le boîtier 214 est en contact thermique avec les faces du boîtier. Le volume du boîtier peut en outre contenir un matériau ferromagnétique en vrac à l'état de billes ou de grains avec le cas échéant un remplissage de liquide caloporteur de façon à dégager la chaleur directement au contact du serpentin. Celui-ci sera ainsi chauffé par son contact avec les faces du boîtier et le matériau remplissant le volume entre le serpentin 215 et le boîtier 214.The coil 215 housed in the housing 214 is in thermal contact with the faces of the housing. The volume of the housing may further contain a ferromagnetic material in bulk in the form of beads or grains with optionally a heat transfer liquid filling so as to release the heat directly in contact with the coil. This will be heated by its contact with the faces of the housing and the material filling the volume between the coil 215 and the housing 214.

Selon une variante non représentée, le boîtier est en un matériau non-ferromagnétique et seule la masse de matière en vrac en grains ou billes au contact direct avec le serpentin, est en un matériau ferromagnétique.According to a variant not shown, the housing is made of a non-ferromagnetic material and only the mass of bulk material in grains or balls in direct contact with the coil, is made of a ferromagnetic material.

Le serpentin 215 est de préférence réalisé en cuivre comme les autres conduites 101, 102 de l'installation.The coil 215 is preferably made of copper like the other pipes 101, 102 of the installation.

La figure 4 montre un dispositif de chauffage à passage 311 composé d'un boîtier 314 muni d'un collecteur d'entrée 320 et d'un collecteur de sortie 321 reliés respectivement par un raccord d'entrée 322 et un raccord de sortie 323 aux conduites 101, 102.The figure 4 shows a passage heating device 311 composed of a housing 314 provided with an inlet manifold 320 and an outlet manifold 321 respectively connected by an inlet connection 322 and an outlet connection 323 to the pipes 101, 102.

Le collecteur d'entrée 320 alimente le volume 316 du boîtier contenant un insert et le collecteur de sortie reçoit l'eau chauffée ayant traversé ce volume.The inlet manifold 320 feeds the volume 316 of the housing containing an insert and the outlet manifold receives the heated water having passed through this volume.

L'insert n'apparaissant pas dans cette figure, est une pièce en un métal ferromagnétique alors que le boîtier 314 peut être en cuivre ou en aluminium ou un alliage d'aluminium, de préférence revêtu extérieurement d'un isolant thermique.The insert does not appear in this figure, is a piece of a ferromagnetic metal while the housing 314 may be copper or aluminum or an aluminum alloy, preferably coated externally with a thermal insulator.

L'inducteur n'est pas représenté dans cette figure.The inductor is not shown in this figure.

Différents exemples d'insert sont représentés aux figures 5A-5D. Ces inserts se placent dans un volume comme le volume 316 du boîtier 314 de la figure 4. Ce volume comporte en général un collecteur d'entrée et un collecteur de sortie non représentés.Different examples of insert are represented in Figures 5A-5D . These inserts are placed in a volume such as the volume 316 of the housing 314 of the figure 4 . This volume generally comprises an input manifold and an unrepresented output collector.

La figure 5A montre un insert 330 formé d'une plaque 331 munie d'ailettes 332 sur une face. L'ensemble est en matériau ferromagnétique. La plaque 331 et les ailettes 332 forment des cheminées avec les parois du boîtier 314 esquissé par le contour en trait interrompu dans lesquelles passent des filets d'eau qui se chauffent par conduction au contact de la paroi et des ailettes.The Figure 5A shows an insert 330 formed of a plate 331 provided with fins 332 on one side. The assembly is made of ferromagnetic material. The plate 331 and the fins 332 form chimneys with the walls of the casing 314 sketched by the contour in broken lines in which pass water streams which heat by conduction in contact with the wall and the fins.

La figure 5B est une vue en coupe horizontale d'un insert 340 en forme de plaque 341 bordée sur ses deux faces par des ailettes 342 délimitant des cheminées avec le boîtier 314. Ces cheminées sont traversées par des veines d'eau qui se chauffent au contact de l'insert 340.The Figure 5B is a horizontal sectional view of an insert 340 in the form of a plate 341 bordered on its two faces by fins 342 delimiting chimneys with the casing 314. These chimneys are traversed by veins of water which are heated in contact with the insert 340.

La figure 5C montre un autre exemple d'insert 350 constitué par deux plaques 351 reliées par des cloisons 352 de façon à délimiter directement des cheminées. Les faces extérieures des plaques 351 sont à une certaine distance des parois du volume du boîtier 314 et délimitent extérieurement des lames d'eau. L'ensemble est traversé par des filets et des lames d'eau qui se chauffent au contact de l'insert. Sa structure mixte combine des cheminées et des lames d'eau à l'extérieur des cheminées.The Figure 5C shows another example of insert 350 consisting of two plates 351 connected by partitions 352 so as to directly define chimneys. The outer faces of the plates 351 are at a distance from the walls of the volume of the casing 314 and externally delimit water strips. The set is crossed by nets and blades of water that heat in contact with the insert. Its mixed structure combines fireplaces and slats of water outside the chimneys.

La figure 5D montre un autre exemple d'insert 360 constitué par un ensemble de plaques 361 parallèles en un matériau ferromagnétique, maintenues écartées les unes des autres par des moyens non représentés, par exemple par des plots servant à l'assemblage des plaques. Les plaques 361 délimitant entre-elles et avec les parois du boîtier 314, des lames d'eau.The figure 5D shows another example of insert 360 constituted by a set of parallel plates 361 in a ferromagnetic material, kept apart from each other by means not shown, for example by studs for the assembly of the plates. The plates 361 delimiting between them and with the walls of the housing 314, blades of water.

La figure 6 montre schématiquement un autre exemple du dispositif de chauffage constitué par insert 370 en un matériau ferromagnétique muni sur chaque face d'ailettes horizontales 371 délimitant un chemin en serpentin (CS) entre l'entrée 374 en partie basse et la sortie 375 en partie haute. Le boîtier 314 est de préférence en un matériau non-ferromagnétique et l'insert 370 est en un matériau ferromagnétique. Le boîtier 314 est muni d'un collecteur d'entrée et d'un collecteur de sortie comme à la figure 4.The figure 6 schematically shows another example of the heater constituted by insert 370 of a ferromagnetic material provided on each side of horizontal fins 371 delimiting a serpentine path (CS) between the inlet 374 in the lower part and the outlet 375 in the upper part. The casing 314 is preferably made of a non-ferromagnetic material and the insert 370 is made of a ferromagnetic material. The housing 314 is provided with an inlet manifold and an outlet manifold as figure 4 .

Les figures 7A, 7B montrent un autre exemple du dispositif de chauffage d'eau. Dans cet exemple, le circuit de chauffage d'eau 411 est constitué par un serpentin en spirale 415. Il s'agit de préférence d'un tube en cuivre cintré pour former la spirale avec une entrée 416 au centre et une sortie tangentielle 417. La spirale 415 est munie sur une face, et de préférence sur les deux faces, d'une plaque 414 en un matériau ferromagnétique et l'inducteur 412 est appliqué contre l'une des faces. Cette forme en spirale a l'avantage de s'inscrire dans un cercle et ainsi de s'adapter particulièrement bien à une forme plate, cylindrique circulaire, de l'inducteur 383.The Figures 7A, 7B show another example of the water heater. In this example, the water heating circuit 411 is constituted by a spiral coil 415. It is preferably a bent copper tube to form the spiral with an inlet 416 in the center and a tangential outlet 417. The spiral 415 is provided on one face, and preferably on both sides, with a plate 414 made of a ferromagnetic material and the inductor 412 is applied against one of the faces. This spiral shape has the advantage of being part of a circle and thus of adapting particularly well to a flat, circular cylindrical shape of the inductor 383.

Dans l'exemple présenté aux figures 7A, 7B, le circuit de chauffage 411 formé par le serpentin 415 est de préférence une conduite de section rectangulaire ou carrée, cintrée et enroulée en spirale. Selon une variante, ce circuit de chauffage peut également être constitué par des pièces soudées à savoir deux plaques sur les deux faces et un ruban enroulé en spirale qui définit le chemin de circulation de l'eau entre les deux plaques.In the example presented to Figures 7A, 7B , the heating circuit 411 formed by the coil 415 is preferably a pipe of rectangular or square section, bent and wound in a spiral. According to one variant, this heating circuit may also consist of welded parts, namely two plates on both sides and a spirally wound ribbon which defines the water circulation path between the two plates.

Dans la description ci-dessus des différents modes de réalisation de circuits de chauffage, l'orientation habituelle est l'orientation verticale, l'eau froide arrivant par le bas et l'eau chaude sortant par le haut en traversant plus ou moins verticalement le boîtier du circuit de chauffage, les cheminées et les lames d'eau ou autres.In the above description of the various embodiments of heating circuits, the usual orientation is the vertical orientation, the cold water coming from below and the hot water coming out from above while crossing more or less vertically the heating circuit casing, chimneys and slats of water or others.

Mais comme l'eau est poussée par la pression d'alimentation, l'orientation peut également être quelconque et en particulier les cheminées et les lames d'eau peuvent être inclinées voire horizontales.But as the water is pushed by the supply pressure, the orientation can also be arbitrary and in particular the chimneys and the water blades can be inclined or even horizontal.

Il en est de même du circuit de chauffage formé par le serpentin en spirale qui peut être placé dans un plan plus ou moins vertical, mais aussi dans un plan horizontal.It is the same for the heating circuit formed by the spiral coil which can be placed in a more or less vertical plane, but also in a horizontal plane.

Dans ce dernier cas, on a l'avantage de réduire la hauteur de l'installation.In the latter case, there is the advantage of reducing the height of the installation.

L'installation de préparation instantanée d'eau chaude selon l'invention est munie de moyens d'isolation thermique autour du dispositif de chauffage d'eau à passage et de la conduite d'eau en sortie de manière à augmenter d'une part l'efficacité du chauffage et d'autre part, éviter de réchauffer la conduite d'eau froide ces moyens ne sont pas détaillés. Enfin, il est à remarquer que les pertes de charge engendrées par la forme en serpentin du circuit réalisée soit par le tube mis en forme, soit par des ailettes constituant des chicanes soit encore la forme en spirale, ne gène pas le fonctionnement puisque l'eau est nécessairement poussée à travers le circuit de chauffage par sa pression d'alimentation. Le passage de l'eau à chauffer se fait régulièrement sur toute la section de passage disponible et il n'y a pas à craindre de poches de vapeur qui pourraient se former à des endroits de surchauffe d'autant plus que le circuit de chauffage d'eau à passage se compose soit d'une conduite de faible section, soit de plusieurs conduites parallèles formant des cheminées ou des chemins en serpentin, à travers lesquels l'eau est forcée de passer sous l'effet de sa pression.The hot water instantaneous preparation system according to the invention is provided with thermal insulation means around the passage water heating device and the outlet water pipe so as to increase, on the one hand, efficiency of heating and secondly, avoid heating the cold water pipe these means are not detailed. Finally, it should be noted that the pressure losses generated by the serpentine form of the circuit carried out either by the shaped tube, or fins constituting baffles or the spiral shape, does not interfere with the operation since the water is necessarily pushed through the heating circuit by its pressure. 'food. The passage of the water to be heated is done regularly over the entire passage section available and there is no fear of pockets of steam that could form in places of overheating especially as the heating circuit Inlet water consists either of a small section pipe or of several parallel pipes forming chimneys or serpentine paths, through which the water is forced to pass under the effect of its pressure.

Suivant une variante non représentée, la conduite d'eau froide 167 et la conduite d'eau chaude 165 sont reliées à un mitigeur de lavabo LV ou d'évier EV.According to a variant not shown, the cold water pipe 167 and the hot water pipe 165 are connected to a basin mixer LV or sink EV.

Suivant une autre variante, dans le cas d'une alimentation en eau froide et en eau chaude d'une machine à laver le linge ou la vaisselle, l'équipement comporte des vannes installées en amont des sorties d'eau chaude 162 et d'eau froide 166 et qui sont commandées par le programme de la machine à laver le linge ML ou la machine à laver la vaisselle MV en fonction des besoins d'eau chaude/froide nécessaires à l'exécution du programme de lavage.According to another variant, in the case of a supply of cold water and hot water from a washing machine or dishes, the equipment comprises valves installed upstream of the hot water outlets 162 and cold water 166 and which are controlled by the program of the ML washing machine or the MV dishwashing machine according to the hot / cold water requirements necessary for the execution of the washing program.

NOMENCLATURENOMENCLATURE

100, 200100, 200
Installation de préparation instantanée d'eau chaudeInstallation of instant hot water
101101
Conduite d'eauWater pipe
102102
Conduite d'eauWater pipe
103103
Conduite d'eauWater pipe
110110
Dispositif de chauffage d'eau à passageCirculating water heating device
111111
Circuit de chauffage d'eau de passagePassage water heating circuit
112112
InducteurInductor
113,113
Générateur haute fréquenceHigh frequency generator
120120
Dispositif antitartreAnti-scaling device
121121
ConduiteConduct
122122
Générateur de champ électromagnétiqueElectromagnetic field generator
123123
Générateur de haute fréquenceHigh frequency generator
130130
Capteur de passage d'eauWater passage sensor
140140
Capteur de températureTemperature sensor
150150
Circuit de commandeControl circuit
151, 152151, 152
Organes de réglageAdjusters
160160
BoîtierHousing
160, 160a, 160b160, 160a, 160b
BoîtierHousing
161161
Entrée d'eauThe entrance of the water
162162
Sortie d'eau chaudeHot water outlet
163163
Branchement électriqueElectrical connection
164164
Conduite d'arrivée d'eauWater supply pipe
165165
Conduite d'eau chaudeHot water pipe
166166
Sortie d'eau froideCold water outlet
167167
Conduite d'eau froideCold water pipe
170170
Capteur de passage d'eauWater passage sensor
211211
Circuit de chauffage d'eau à passageCirculating water heating circuit
212212
InducteurInductor
214214
BoîtierHousing
215215
Serpentinserpentine
216216
Raccord d'entrée du boîtierHousing inlet connection
217217
Raccord de sortie du boîtierHousing outlet connection
311311
Circuit de chauffage d'eau à passageCirculating water heating circuit
314314
BoîtierHousing
316316
Volume du boîtier contenant un insertCase volume containing an insert
320320
Collecteur d'entréeInlet manifold
321321
Collecteur de sortieExit manifold
322322
Raccord d'entréeInlet connection
323323
Raccord de sortieOutlet connection
330330
Insertinsert
331331
PlaquePlate
332332
Ailettesfins
340340
Insertinsert
341341
PlaquePlate
342342
Ailettesfins
350350
Insertinsert
351351
PlaquePlate
352352
CloisonPartition
353353
BoîtierHousing
360360
Insertinsert
361361
Plaque parallèleParallel plate
363363
Paroi du boîtierHousing wall
370370
Insertinsert
373373
BoîtierHousing
371371
Ailette horizontaleHorizontal fin
374374
EntréeEntrance
375375
SortieExit
411411
Circuit de chauffage d'eau à passageCirculating water heating circuit
412412
InducteurInductor
414414
PlaquePlate
415415
Conduite en spiraleSpiral driving
416416
EntréeEntrance
417417
Sortie tangentielleTangential exit
TcTc
Température de consigneConservation temperature
PUCOULD
Poste d'utilisationUse station
LVLV
LavaboBathroom sink
EVEV
EvierSink
MVMV
Machine à laver la vaisselleDishwasher
MLML
Machine à laver le lingeWashing machine
RARA
Robinet d'arrêtStopcock
ECEC
Eau chaudeHot water
EFEF
Eau froideCold water
SecDry
Signal de demande d'eau chaudeHot water demand signal
CSCS
chemin en serpentinserpentine path
SefSef
Signal de demande d'eau froideCold water demand signal

Claims (10)

  1. An installation for instantaneous hot water production designed to be connected directly upstream of a hot water user station (basin, sink, washing machine) with a water supply branch (161) and a water discharge branch (162, 166) comprising:
    - an induction water heating device with a channel (110) comprising a heating circuit (111) equipped with an inductor (112) supplied by a high frequency generator (113),
    characterized by
    A) an electromagnetic limescale prevention device (120) upstream of the heating circuit (111) supplied by a frequency generator (123),
    B) a channel sensor (130) detecting a demand for hot water following the opening of a tap or valve at the user station (PU) or the discontinuation of said demand,
    C) a branch duct (103) downstream of the limescale prevention device (120) fitted with a water passage sensor (170) supplying a cold water demand signal (Sef),
    D) a control circuit (150) receiving the water demand signal (Sec) from the channel sensor (170) in order to control the operation of the heating circuit (111) and the limescale prevention device (120), to adjust the power supplying the heating device (110) in order to regulate its temperature, and to stop their operation, and the signal (Sef) from the water passage sensor (170) in order to cause the limescale prevention device (120) to operate without operating the water heating device (110).
  2. An installation according to claim 1, characterized in that the water heating circuit (111), with its inductor (112), and the limescale prevention device (120) are housed in a housing (160a) connected to an electrical housing (160b) comprising the generator (113) supplying the inductor (112) of the heating circuit (111), the generator (123) of the limescale prevention device (120) and the control circuit (150).
  3. An installation according to claim 1, characterized in that it comprises a housing (160) provided with an upstream connection (161) and a downstream connection (162) for the connection of the installation to the water duct supplying (164, 165) the user station (PU) and a terminal (163) for the connection of the electrical line.
  4. An installation according to claim 1, characterized in that the heating circuit (111) is a circuit selected from among the following circuits:
    - a coil of a ferromagnetic material,
    - a coil of a ferromagnetic material in contact with a plate of ferromagnetic material,
    - a water gap defined between two plates of a ferromagnetic material,
    - a coil of a non-ferromagnetic material in contact with one or two plates of a ferromagnetic material.
  5. An installation according to claim 4, characterized in that the heating circuit (211) is housed in a housing (214) and the free volume between the heating circuit and the housing is filled with bulk ferromagnetic material.
  6. An installation according to claim 1, characterized in that the heating circuit (311) is formed by a housing (314) housing an insert (330, 340, 350, 360, 370) of a ferromagnetic material exposed to the high frequency ferromagnetic field of the inductor.
  7. An installation according to claim 6, characterized in that the insert is a member selected from among the group including:
    - a plate provided with fins on one surface (330),
    - a plate provided with fins on both surfaces (340),
    - a double plate connected by fins (350),
    - a set of parallel plates defining water gaps (360).
  8. An installation according to claim 5, characterized in that the housing (214, 314) is of a non-ferromagnetic material such as copper or aluminium.
  9. An installation according to claim 1, characterized in that the control circuit (150) is fitted with an IR or RF receiver communicating with an IR or RF transmitter in order to control the reference temperature.
  10. An installation according to claim 1, characterized in that the cold/hot water outlet(s) is/are equipped with electrovalves controlled from a user station (PU), in particular a washing machine (LM) or a dishwasher (MV), as a function of the needs of the washing programme.
EP10710074.5A 2009-02-18 2010-02-18 Continuous flow heater for hot water Not-in-force EP2399084B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0951046A FR2942301A1 (en) 2009-02-18 2009-02-18 INSTALLATION FOR INSTANTANEOUS HOT WATER PREPARATION
FR1051163A FR2942302B1 (en) 2009-02-18 2010-02-18 INSTALLATION FOR INSTANT PREPARATION OF HOT WATER.
PCT/FR2010/050277 WO2010094893A2 (en) 2009-02-18 2010-02-18 Apparatus for instantly preparing hot water

Publications (2)

Publication Number Publication Date
EP2399084A2 EP2399084A2 (en) 2011-12-28
EP2399084B1 true EP2399084B1 (en) 2014-08-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10710074.5A Not-in-force EP2399084B1 (en) 2009-02-18 2010-02-18 Continuous flow heater for hot water

Country Status (4)

Country Link
US (1) US9163855B2 (en)
EP (1) EP2399084B1 (en)
FR (2) FR2942301A1 (en)
WO (1) WO2010094893A2 (en)

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FR2942301A1 (en) 2009-02-18 2010-08-20 Elka S A INSTALLATION FOR INSTANTANEOUS HOT WATER PREPARATION
FR2994475B1 (en) * 2012-08-13 2020-01-17 Winslim Sarl INDUCTION HEATING DEVICE OF A WATER HEATER AND WATER HEATER PROVIDED WITH SUCH A DEVICE
FR3009609B1 (en) 2013-08-09 2018-11-23 Winslim METHOD FOR MANAGING THE HEATING OF WATER IN A TANK OF A WATER HEATER
KR101803873B1 (en) * 2015-08-21 2017-12-04 엘지전자 주식회사 Induction heating module
KR101770481B1 (en) 2015-11-30 2017-09-05 엘지전자 주식회사 Water purifier
KR102423368B1 (en) * 2016-05-04 2022-07-21 엘지전자 주식회사 Induction heating module and water purifier having the same
KR102400985B1 (en) * 2016-05-24 2022-05-24 엘지전자 주식회사 Water purifier including a heating passage heated by an induction heating apparatus
KR102247824B1 (en) * 2016-05-24 2021-05-04 엘지전자 주식회사 Water purifier including a heating passage heated by an induction heating apparatus
KR101803876B1 (en) * 2016-08-16 2017-12-04 엘지전자 주식회사 Induction heating module
KR102042575B1 (en) * 2017-02-17 2019-12-02 엘지전자 주식회사 Water purifier
KR102043953B1 (en) * 2018-04-17 2019-12-02 엘지전자 주식회사 Induction heating module and water purifier having the same
KR102043952B1 (en) * 2018-04-17 2019-12-02 엘지전자 주식회사 Induction heating module and water purifier having the same
KR102112722B1 (en) * 2018-04-17 2020-05-19 엘지전자 주식회사 Induction heating module and water purifier having the same
KR102115187B1 (en) * 2018-04-17 2020-05-26 엘지전자 주식회사 Induction heating module and water purifier having the same
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FR2942302A1 (en) 2010-08-20
US20120138598A1 (en) 2012-06-07
FR2942301A1 (en) 2010-08-20
EP2399084A2 (en) 2011-12-28
US9163855B2 (en) 2015-10-20
WO2010094893A3 (en) 2010-10-14
FR2942302B1 (en) 2011-05-27
WO2010094893A2 (en) 2010-08-26

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