EP1290380B1 - Heating unit for heat-conveying medium for central heating installation - Google Patents

Heating unit for heat-conveying medium for central heating installation Download PDF

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Publication number
EP1290380B1
EP1290380B1 EP01937884A EP01937884A EP1290380B1 EP 1290380 B1 EP1290380 B1 EP 1290380B1 EP 01937884 A EP01937884 A EP 01937884A EP 01937884 A EP01937884 A EP 01937884A EP 1290380 B1 EP1290380 B1 EP 1290380B1
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EP
European Patent Office
Prior art keywords
heating unit
internal partition
unit according
heating
annular space
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EP01937884A
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German (de)
French (fr)
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EP1290380A1 (en
EP1290380B8 (en
Inventor
Ernest Doclo
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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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/225—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating electrical central heating boilers
    • 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
    • F24H1/102—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 resistance

Definitions

  • the invention relates to a heating fluid heating unit for central heating installation.
  • a central heating installation includes a circuit of pipes in which one or several radiators or convectors, at least one expansion device and at least one heating station adapted to heat the coolant that we circulate in the circuit.
  • Heating stations for a central heating installation are already known in the state of the art, for example in FR-A-990 616, US-A-3,968,346 and US-A-4,469,935.
  • the heating station of the installation can notably be a coal, gas or oil boiler, and there are also electric heating stations.
  • the purpose of the present invention is to provide an installation central heating system in which the heating station consists of in one or more electric heating units of simple structure and compact, and allowing an efficient and flexible operation of installation.
  • the present invention relates to a heating unit heat transfer fluid of central heating.
  • This heating unit consists of a tank having a tubular outer wall, a first end wall and a second end wall, these walls delimiting a substantially cylindrical space.
  • a first partition tubular interior and a second tubular inner partition, concentric substance with the tubular outer wall, are mounted in the reservoir, the second inner partition having a larger diameter small than that of the first tubular partition.
  • a first space ring is located between the tubular outer wall and the first partition indoor; a second annular space is located between the first partition interior and the second interior partition; a central canal is located at inside the second interior partition.
  • the second annular space is in communication with the central channel near the first end wall and in communication with the first annular space at near the second end wall.
  • the tank is equipped with a inlet opening into the first annular space nearby of the first end wall and an exit port, in the second end wall, opening out of the central channel.
  • At least one thermopung electric is mounted in the central channel.
  • At least one probe Thermostatic is mounted in the tank.
  • the constituent elements of the heating unit are preferably made of metal.
  • tubular outer wall, the first and second end walls and the first inner partition can especially be made of steel.
  • the second interior partition can also be made in steel. According to another embodiment, this second interior partition is made of copper.
  • the heating unit comprises, in said second annular space, transfer elements of heat integral with said second outer wall.
  • These heat transfer elements can in particular consist of two rings spaced apart from one another, in solidarity with the said second internal partition and arranged perpendicular to the axis of this one, these two rings being pierced with several holes and being interconnected by means of several spaced apart metal bars one from the other.
  • these metal bars In order to have a large contact area with the heat transfer fluid that surrounds them, these metal bars present advantageously a ribbed outer surface. For the same reason, these metal bars can also wear fins.
  • Said heat transfer elements are made in one material with good conductivity.
  • the two rings between which are mounted the metal bars can be made of steel, but they are advantageously made of copper.
  • the metal bars themselves are preferably made of copper.
  • At least one probe Thermostatic is mounted in the tank. To ensure a more great security of operation, it may be desirable that two Thermostatic probes are mounted in the tank.
  • this probe or these thermostatic probes are mounted in the second space annular.
  • the first space ring is communicated with the second annulus thanks to several openings distributed around the periphery of said first inner partition, near the second end wall.
  • near the second end wall here means that the distance between these openings and the second wall endpoint is significantly smaller (for example, at least four times smaller) than the distance of these openings and the first wall end.
  • a ring can be mounted in the first annular space, between the tubular outer wall and the first interior partition.
  • This ring which (in the axial direction) is pierced of several holes distributed along its periphery, is located at one level intermediate between the tank inlet and the openings that are arranged in said first intermediate partition.
  • the communication of the second annular space with the central channel is advantageously ensured by the fact that a spacing is provided between the second inner partition and the first end wall.
  • the inlet orifice tank is formed in the tubular outer wall, close to the first end wall. This orifice thus opens radially into the first annular space.
  • the reservoir is preferably provided with means allowing to fix it on a support.
  • two immersion heaters electrical devices are mounted in the central channel of the heater.
  • the present invention also relates to an installation central heating fluid with heat transfer fluid, comprising a circuit of pipelines in which are connected one or more radiators or convectors, at least one circulation pump, at least one device an expansion unit and at least one heating unit, this installation comprising at least one room thermostat.
  • this installation is connected to at least one heating unit according to the invention, the installation including, in addition, an automated control station adapted to receive the signals of the room thermostats and the or thermostatic probes of the heating unit or units, and order the start and stop of operation of the circulation pumps and the immersion heater (s) of the heating units.
  • the heating system according to the invention can optionally include two or more heating units next the invention, these heating units then being connected in parallel in the circuit.
  • the heat transfer fluid circulating in the installation is preferably of the oil and more particularly a mineral oil especially designed for transferring calories.
  • the heating unit (s) connected to the circuit are preferably capable of heating the heat transfer fluid to a temperature greater than 100 ° C.
  • the installation can be set in such a way the temperature of the coolant (in particular, the oil) is limited at a temperature between 105 ° and 110 ° C, at the exit of the heating units.
  • the coolant in particular, the oil
  • the heating unit consists of a tank comprising a tubular outer wall 1, a first end wall 2 and a second end wall 3.
  • a first annular space 6 is thus located between the wall 1 and the first interior partition 4 and a second space 4 and the second interior partition 5.
  • a central channel 8 is located inside the second internal tubular partition 5.
  • first end wall 2 is in is formed, essentially, by a ring 9 welded between the elements tubular which respectively form the outer wall 1 and the first internal partition 4 and a ring 10 welded between the tubular elements which respectively form the first interior partition 4 and the second interior partition 5.
  • the second end wall is formed, essentially, by a ring 11 welded between the elements tubular which respectively form the outer wall 1 and the first internal partition 4 and a ring 12 welded between the elements tubular which respectively form the first partition 4 and the second interior partition 5.
  • the tank is equipped with an inlet which consists of a pipe 13 welded to the outer wall 1 and opening into the first annular space 6, near the first wall end 2.
  • the tank is also provided with an outlet orifice which opens out of the central channel 8 and which consists of a welded pipe 14 in the ring 12 (which is a constituent element of the second wall end 3).
  • the second interior partition 5 carries three externally rings 15, 16, 17, whose outer diameter is equal (or slightly lower) than the inside diameter of the first inner partition 4.
  • the ring 15, which is located closest to the second end wall 3, is connected to the ring 12 by two fingers-of-glove 18.
  • Two probes thermostatic devices 19 passing through orifices provided for this purpose in the ring 12, and by said fingers-of-glove 18, are mounted in the second annular space 7.
  • the electrical connectors and wires which allow to connect these thermostatic probes 19 to a station of command are not represented.
  • the other two rings 16 and 17 are spaced one from the other and interconnected by means of twelve copper bars 20 regularly spaced from each other.
  • the rings 16 and 17 are each pierced with twelve holes 21 which are angularly offset by relative to bars 20, as can be seen in FIG. 3.
  • Twelve holes 22 are formed in the first partition 4, near the second end wall 3. These holes 22 which are regularly distributed around the perimeter of the first partition tubular interior 4, port the first space ring 6 with the second annular space 7.
  • a ring 23 pierced with eight holes 24 is mounted between the outer wall 1 and the first inner partition 4, at one level intermediate between the inlet pipe 13 and the holes 22 which are arranged in the first inner partition 4. During the operation of the heating unit, this ring 23 pierced with holes 24 regulates the flow of heat transfer fluid which enters through the tubing 13 and which rises towards the holes 22.
  • Two electric immersion heaters 25 are located in the central channel 8. These immersion heaters 25 are fixed in a base 26 which is screwed into the ring 10, a bridge 27 sealing the mounting.
  • Connectors 28 make it possible to connect the immersion heaters 25 to power cables.
  • Shoulders 29, 30 are intended for fixing the unit heating on a suitable support.
  • thermo-plunger or both heaters 25 are operated. Meanwhile, the heat transfer fluid circulates in the unit of heating entering through the entrance 13, going back in the first annular space 6, penetrating through the holes 22 in the second space ring 7, descending into the second annular space 7 and going up the central canal 8 to exit 14.
  • the heat transfer fluid is in direct contact with immersion heaters which carry it to the desired temperature.
  • the coolant is already preheated course of its passage in the first annular space 6 and then especially during its passage in the second annular space 7 in which it comes into contact not only with the second partition intermediate 5 but also with the transfer elements of heat 16, 17 and 20.
  • a heating unit as described is intended to be connected to the piping system of a heating system central.
  • the pipe circuit of such an installation are generally connected several radiators, at least one unit of heating, at least one circulation pump and at least one device expansion.
  • the installation further comprises at least one thermostat room and an automated control station capable of receiving signals from the room thermostats and thermostatic probes of the heating unit (or heating units), and to control the start-up and shutdown of the pump circulation (or circulation pumps) and the immersion heater (s) of the heating unit (or heating units).
  • the heating capacity of a heating unit depends obviously the power of the or immersion heaters mounted in unit.
  • the choice of suitable power immersion heaters allows you to meet a desired heating capacity.
  • the control station of the installation can then be programmed so that, depending on the need for heating, one or two heaters of one or more heating units are
  • the control station is also programmed to that the heating unit (s) can only operate when the or the circulation pumps are working.
  • the heating units according to the invention are very few bulky, are of very simple construction, and allow a great flexibility of operation of the installation in which they are connected.
  • the heat transfer fluid that is circulated in the installation is preferably mineral oil for transferring calories. This allows in particular to heat the heat transfer fluid to a higher temperature at 100 ° C, and it remains possible, without problem, even at high altitude, in mountainous regions.
  • a heating unit according to the invention is a device compact which contains only a small volume of coolant and which, therefore, has a low thermal inertia.
  • radiators or convectors mounted in the installation are of the type with large radiation surface and low internal volume, the installation as a whole will have a low thermal inertia, which is a real advantage.

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  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Resistance Heating (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Tunnel Furnaces (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Central Heating Systems (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

The invention concerns a heating unit comprising a tubular wall (1) and first and second end walls (2, 3). A first annular space (6) is located between the tubular wall (1) and a first tubular partition (4). A second annular space (7) is located between the first partition (4) and a second tubular partition (5) inside the first partition (4). An immersion heater (25) is mounted in the central channel (8) formed by the second partition (5). The second space (7) communicates with the central channel (8) near the first end wall (2) and with the first space (6) near the second end wall (3). An intake orifice (13) emerges into the first space (6) near the first end wall (2) and an outlet (14), in the second end wall (3) emerges into the central channel (8).

Description

L'invention concerne une unité de chauffage de fluide caloporteur pour installation de chauffage central.The invention relates to a heating fluid heating unit for central heating installation.

De manière générale, une installation de chauffage central comprend un circuit de canalisations dans lequel sont branchés un ou plusieurs radiateurs ou convecteurs, au moins un dispositif d'expansion et au moins un poste de chauffage apte à chauffer le fluide caloporteur que l'on fait circuler dans le circuit. Des postes de chauffage pour une installation de chauffage central sont dejà connus dans l'état de la technique, par example dans les documents FR-A-990 616, US-A- 3 968 346 et US-A-4 469 935.In general, a central heating installation includes a circuit of pipes in which one or several radiators or convectors, at least one expansion device and at least one heating station adapted to heat the coolant that we circulate in the circuit. Heating stations for a central heating installation are already known in the state of the art, for example in FR-A-990 616, US-A-3,968,346 and US-A-4,469,935.

Le poste de chauffage de l'installation peut notamment être une chaudière au charbon, au gaz ou au mazout, et il existe également des postes de chauffage électriques.The heating station of the installation can notably be a coal, gas or oil boiler, and there are also electric heating stations.

Le but de la présente invention est de réaliser une installation de chauffage central dans laquelle le poste de chauffage consiste en une ou plusieurs unités de chauffage électriques de structure simple et compacte, et permettant un fonctionnement efficace et souple de l'installation.The purpose of the present invention is to provide an installation central heating system in which the heating station consists of in one or more electric heating units of simple structure and compact, and allowing an efficient and flexible operation of installation.

La présente invention a pour objet une unité de chauffage de fluide caloporteur de chauffage central. Cette unité de chauffage consiste en un réservoir comportant une paroi extérieure tubulaire, une première paroi d'extrémité et une seconde paroi d'extrémité, ces parois délimitant un espace en substance cylindrique. Une première cloison intérieure tubulaire et une seconde cloison intérieure tubulaire, en substance concentriques avec la paroi extérieure tubulaire, sont montées dans le réservoir, la seconde cloison intérieure ayant un diamètre plus petit que celui de la première cloison tubulaire. Un premier espace annulaire est situé entre la paroi extérieure tubulaire et la première cloison intérieure; un second espace annulaire est situé entre la première cloison intérieure et la seconde cloison intérieure; un canal central est situé à l'intérieur de la seconde cloison intérieure. Le second espace annulaire est en communication avec le canal central à proximité de la première paroi d'extrémité et en communication avec le premier espace annulaire à proximité de la seconde paroi d'extrémité. Le réservoir est muni d'un orifice d'entrée débouchant dans le premier espace annulaire à proximité de la première paroi d'extrémité et d'un orifice de sortie, dans la seconde paroi d'extrémité, débouchant du canal central. Au moins un thermoptongeur électrique est monté dans le canal central. Au moins une sonde thermostatique est montée dans le réservoir.The present invention relates to a heating unit heat transfer fluid of central heating. This heating unit consists of a tank having a tubular outer wall, a first end wall and a second end wall, these walls delimiting a substantially cylindrical space. A first partition tubular interior and a second tubular inner partition, concentric substance with the tubular outer wall, are mounted in the reservoir, the second inner partition having a larger diameter small than that of the first tubular partition. A first space ring is located between the tubular outer wall and the first partition indoor; a second annular space is located between the first partition interior and the second interior partition; a central canal is located at inside the second interior partition. The second annular space is in communication with the central channel near the first end wall and in communication with the first annular space at near the second end wall. The tank is equipped with a inlet opening into the first annular space nearby of the first end wall and an exit port, in the second end wall, opening out of the central channel. At least one thermopung electric is mounted in the central channel. At least one probe Thermostatic is mounted in the tank.

Les éléments constitutifs de l'unité de chauffage sont de préférence faits en métal.The constituent elements of the heating unit are preferably made of metal.

En particulier, la paroi extérieure tubulaire, les première et seconde parois d'extrémité et la première cloison intérieure peuvent notamment être faites en acier.In particular, the tubular outer wall, the first and second end walls and the first inner partition can especially be made of steel.

La seconde cloison intérieure peut également être faite en acier. Suivant une autre forme d'exécution, cette seconde cloison intérieure est faite en cuivre.The second interior partition can also be made in steel. According to another embodiment, this second interior partition is made of copper.

Suivant une forme d'exécution préférée, l'unité de chauffage comporte, dans ledit second espace annulaire, des éléments de transfert de chaleur solidaires de ladite seconde cloison extérieure.In a preferred embodiment, the heating unit comprises, in said second annular space, transfer elements of heat integral with said second outer wall.

Ces éléments de transfert de chaleur peuvent notamment consister en deux anneaux espacés l'un de l'autre, solidaires de ladite seconde cloison intérieure et disposés perpendiculairement à l'axe de celle-ci, ces deux anneaux étant percés de plusieurs trous et étant raccordés entre eux au moyen de plusieurs barres métalliques espacées l'une de l'autre.These heat transfer elements can in particular consist of two rings spaced apart from one another, in solidarity with the said second internal partition and arranged perpendicular to the axis of this one, these two rings being pierced with several holes and being interconnected by means of several spaced apart metal bars one from the other.

De manière à présenter une grande surface de contact avec le fluide caloporteur qui les entoure, ces barres métalliques présentent avantageusement une surface extérieure nervurée. Pour la même raison, ces barres métalliques peuvent également porter des ailettes. In order to have a large contact area with the heat transfer fluid that surrounds them, these metal bars present advantageously a ribbed outer surface. For the same reason, these metal bars can also wear fins.

Lesdits éléments de transfert de chaleur sont réalisés en un matériau ayant une bonne conductibilité. Les deux anneaux entre lesquels sont montés les barres métalliques peuvent être faits en acier, mais ils sont avantageusement faits en cuivre. Les barres métalliques elles-mêmes sont de préférence faites en cuivre.Said heat transfer elements are made in one material with good conductivity. The two rings between which are mounted the metal bars can be made of steel, but they are advantageously made of copper. The metal bars themselves are preferably made of copper.

Comme déjà mentionné plus haut, au moins une sonde thermostatique est montée dans le réservoir. Pour assurer une plus grande sécurité de fonctionnement, il peut être souhaitable que deux sondes thermostatiques soient montées dans le réservoir.As already mentioned above, at least one probe Thermostatic is mounted in the tank. To ensure a more great security of operation, it may be desirable that two Thermostatic probes are mounted in the tank.

Suivant une forme d'exécution particulière, cette sonde ou ces sondes thermostatiques sont montées dans le second espace annulaire.According to a particular embodiment, this probe or these thermostatic probes are mounted in the second space annular.

Suivant une forme d'exécution préférée, le premier espace annulaire est mis en communication avec le second espace annulaire grâce à plusieurs ouvertures réparties sur le pourtour de ladite première cloison intérieure, à proximité de la seconde paroi d'extrémité.According to a preferred embodiment, the first space ring is communicated with the second annulus thanks to several openings distributed around the periphery of said first inner partition, near the second end wall.

L'expression "à proximité de la seconde paroi d'éxtrémité" signifie ici que la distance entre ces ouvertures et la seconde paroi d'extrémité est nettement plus petite (par exemple, au moins quatre fois plus petite) que la distance de ces ouvertures et la première paroi d'extrémité.The expression "near the second end wall" here means that the distance between these openings and the second wall endpoint is significantly smaller (for example, at least four times smaller) than the distance of these openings and the first wall end.

De manière avantageuse, un anneau peut être monté dans le premier espace annulaire, entre la paroi extérieure tubulaire et la première cloison intérieure. Cet anneau qui (dans le sens axial) est percé de plusieurs trous répartis le long de son pourtour, est situé à un niveau intermédiaire entre l'orifice d'entrée du réservoir et les ouvertures qui sont ménagées dans ladite première cloison intermédiaire.Advantageously, a ring can be mounted in the first annular space, between the tubular outer wall and the first interior partition. This ring which (in the axial direction) is pierced of several holes distributed along its periphery, is located at one level intermediate between the tank inlet and the openings that are arranged in said first intermediate partition.

La mise en communication du second espace annulaire avec le canal central, est avantageusement assurée par le fait qu'un espacé est ménagé entre la seconde cloison intérieure et la première paroi d'extrémité.The communication of the second annular space with the central channel, is advantageously ensured by the fact that a spacing is provided between the second inner partition and the first end wall.

Suivant une forme d'exécution particulière, l'orifice d'entrée du réservoir est ménagé dans la paroi extérieure tubulaire, à proximité de la première paroi d'extrémité. Cet orifice débouche ainsi radialement dans le premier espace annulaire.According to a particular embodiment, the inlet orifice tank is formed in the tubular outer wall, close to the first end wall. This orifice thus opens radially into the first annular space.

Le réservoir est de préférence muni de moyens permettant de le fixer sur un support.The reservoir is preferably provided with means allowing to fix it on a support.

Suivant une forme d'exécution avantageuse, deux thermoplongeurs électriques sont montés dans le canal central de l'unité de chauffage.According to an advantageous embodiment, two immersion heaters electrical devices are mounted in the central channel of the heater.

Lors du fonctionnement de l'installation de chauffage central dans laquelle est branchée l'unité de chauffage, un seul de ces thermoplongeurs ou les deux thermoplongeurs peuvent être mis en fonctionnement, suivant les circonstances et les besoins.When operating the central heating system in which is connected the heating unit, only one of these immersion heaters or both immersion heaters can be operated, according to the circumstances and needs.

La présente invention a également pour objet une installation de chauffage central à fluide caloporteur, comportant un circuit de canalisations dans lequel sont branchés un ou plusieurs radiateurs ou convecteurs, au moins une pompe de circulation, au moins un dispositif d'expansion et au moins une unité de chauffage, cette installation comportant au moins un thermostat d'ambiance. Dans le circuit de cette installation est branchée au moins une unité de chauffage suivant l'invention, l'installation comportant, en outre, un poste de commande automatisé apte à recevoir les signaux du ou des thermostats d'ambiance et de la ou des sondes thermostatiques de la ou des unités de chauffage, et à commander la mise en fonctionnement et l'arrêt de fonctionnement de la ou des pompes de circulation et du ou des thermoplongeurs de la ou des unités de chauffage.The present invention also relates to an installation central heating fluid with heat transfer fluid, comprising a circuit of pipelines in which are connected one or more radiators or convectors, at least one circulation pump, at least one device an expansion unit and at least one heating unit, this installation comprising at least one room thermostat. In the circuit of this installation is connected to at least one heating unit according to the invention, the installation including, in addition, an automated control station adapted to receive the signals of the room thermostats and the or thermostatic probes of the heating unit or units, and order the start and stop of operation of the circulation pumps and the immersion heater (s) of the heating units.

L'installation de chauffage suivant l'invention peut éventuellement comprendre deux ou plusieurs unités de chauffage suivant l'invention, ces unités de chauffage étant alors branchées en parallèle dans le circuit.The heating system according to the invention can optionally include two or more heating units next the invention, these heating units then being connected in parallel in the circuit.

Le fluide caloporteur qui circule dans l'installation est de préférence de l'huile et, plus particulièrement une huile minérale spécialement conçue pour le transfert de calories.The heat transfer fluid circulating in the installation is preferably of the oil and more particularly a mineral oil especially designed for transferring calories.

La ou les unités de chauffage branchées dans le circuit sont de préférence aptes à chauffer le fluide caloporteur à une température supérieure à 100°C.The heating unit (s) connected to the circuit are preferably capable of heating the heat transfer fluid to a temperature greater than 100 ° C.

L'installation peut notamment être réglée de telle manière que la température du fluide caloporteur (en particulier, l'huile) soit limitée à une température comprise entre 105° et 110°C, à la sortie de la ou des unités de chauffage.The installation can be set in such a way the temperature of the coolant (in particular, the oil) is limited at a temperature between 105 ° and 110 ° C, at the exit of the heating units.

D'autres particularités et avantages de l'invention ressortiront de la description d'une unité de chauffage suivant l'invention, donnée à titre d'exemple non limitatif, référence étant faite aux dessins annexés, dans lesquels :

  • la Fig. 1 est une vue en coupe axiale de l'unité de chauffage;
  • la Fig. 2 est une coupe transversale de l'unité de chauffage suivant la ligne II-II de la Fig. 1; et
  • la Fig. 3 est une coupe transversale de l'unité de chauffage suivant la ligne III-III de la Fig. 1.
    • Other features and advantages of the invention will emerge from the description of a heating unit according to the invention, given by way of non-limiting example, reference being made to the appended drawings, in which:
  • FIG. 1 is an axial sectional view of the heating unit;
  • FIG. 2 is a cross-section of the heating unit along line II-II of FIG. 1; and
  • FIG. 3 is a cross-section of the heating unit along line III-III of FIG. 1.

    • L'unité de chauffage consiste en un réservoir comportant une paroi extérieure tubulaire 1, une première paroi d'extrémité 2 et une seconde paroi d'extrémité 3.The heating unit consists of a tank comprising a tubular outer wall 1, a first end wall 2 and a second end wall 3.

    Une première cloison intérieure tubulaire 4, concentrique avec la paroi extérieure 1, est montée dans le réservoir. Une seconde cloison intérieure tubulaire 5, également concentrique avec la paroi extérieure 1, est montée à l'intérieur de la première cloison 4.A first tubular inner partition 4, concentric with the outer wall 1, is mounted in the tank. A second tubular interior partition 5, also concentric with the outer wall 1, is mounted inside the first partition 4.

    Un premier espace annulaire 6 est ainsi situé entre la paroi extérieure 1 et la première cloison intérieure 4 et un second espace 4 et la seconde cloison intérieure 5. Un canal central 8 est situé à l'intérieur de la seconde cloison intérieure tubulaire 5.A first annular space 6 is thus located between the wall 1 and the first interior partition 4 and a second space 4 and the second interior partition 5. A central channel 8 is located inside the second internal tubular partition 5.

    On remarquera que la première paroi d'extrémité 2 est en fait formée, pour l'essentiel, par un anneau 9 soudé entre les éléments tubulaires qui forment respectivement la paroi extérieure 1 et la première cloison intérieure 4 et par un anneau 10 soudé entre les éléments tubulaires qui forment respectivement la première cloison intérieure 4 et la seconde cloison intérieure 5.It will be noted that the first end wall 2 is in is formed, essentially, by a ring 9 welded between the elements tubular which respectively form the outer wall 1 and the first internal partition 4 and a ring 10 welded between the tubular elements which respectively form the first interior partition 4 and the second interior partition 5.

    De manière analogue, la seconde paroi d'extrémité est formée, pour l'essentiel, par un anneau 11 soudé entre les éléments tubulaires qui forment respectivement la paroi extérieure 1 et la première cloison intérieure 4 et par un anneau 12 soudé entre les éléments tubulaires qui forment respectivement la première cloison 4 et la seconde cloison intérieure 5.Similarly, the second end wall is formed, essentially, by a ring 11 welded between the elements tubular which respectively form the outer wall 1 and the first internal partition 4 and a ring 12 welded between the elements tubular which respectively form the first partition 4 and the second interior partition 5.

    Le réservoir est muni d'un orifice d'entrée qui consiste en une tubulure 13 soudée à la paroi extérieure 1 et débouchant dans le premier espace annulaire 6, à proximité de la première paroi d'extrémité 2.The tank is equipped with an inlet which consists of a pipe 13 welded to the outer wall 1 and opening into the first annular space 6, near the first wall end 2.

    Le réservoir est également muni d'un orifice de sortie qui débouche du canal central 8 et qui consiste en une tubulure 14 soudée dans l'anneau 12 (qui est un élément constitutif de la seconde paroi d'extrémité 3).The tank is also provided with an outlet orifice which opens out of the central channel 8 and which consists of a welded pipe 14 in the ring 12 (which is a constituent element of the second wall end 3).

    La seconde cloison intérieure 5 porte extérieurement trois anneaux 15,16, 17, dont le diamètre extérieure est égal (ou légèrement inférieur) au diamètre intérieur de la première cloison intérieure 4. L'anneau 15, qui est situé le plus près de la seconde paroi d'extrémité 3, est relié à l'anneau 12 par deux doigts-de-gant 18. Deux sondes thermostatiques 19 passant par des orifices ménagés à cet effet dans l'anneau 12, et par lesdits doigts-de-gant 18, sont montées dans le second espace annulaire 7. Les connecteurs et fils électriques qui permettent de raccorder ces sondes thermostatiques 19 à un poste de commande ne sont pas représentés.The second interior partition 5 carries three externally rings 15, 16, 17, whose outer diameter is equal (or slightly lower) than the inside diameter of the first inner partition 4. The ring 15, which is located closest to the second end wall 3, is connected to the ring 12 by two fingers-of-glove 18. Two probes thermostatic devices 19 passing through orifices provided for this purpose in the ring 12, and by said fingers-of-glove 18, are mounted in the second annular space 7. The electrical connectors and wires which allow to connect these thermostatic probes 19 to a station of command are not represented.

    Les deux autres anneaux 16 et 17 sont espacés l'un de l'autre et reliés entre eux au moyen de douze barres de cuivre 20 régulièrement espacées l'une de l'autre. Les anneaux 16 et 17 sont chacun percés de douze trous 21 qui sont angulairement décalés par rapport aux barres 20, comme on peut le voir à la Fig. 3.The other two rings 16 and 17 are spaced one from the other and interconnected by means of twelve copper bars 20 regularly spaced from each other. The rings 16 and 17 are each pierced with twelve holes 21 which are angularly offset by relative to bars 20, as can be seen in FIG. 3.

    Douze trous 22 sont ménagés dans la première cloison intérieure 4, à proximité de la seconde paroi d'extrémité 3. Ces trous 22 qui sont régulièrement répartis sur le pourtour de la première cloison intérieure tubulaire 4, mettent en communication le premier espace annulaire 6 avec le second espace annulaire 7.Twelve holes 22 are formed in the first partition 4, near the second end wall 3. These holes 22 which are regularly distributed around the perimeter of the first partition tubular interior 4, port the first space ring 6 with the second annular space 7.

    Un anneau 23 percé de huit trous 24 est monté entre la paroi extérieure 1 et la première cloison intérieure 4, à un niveau intermédiaire entre la tubulure d'entrée 13 et les trous 22 qui sont ménagés dans la première cloison intérieure 4. Lors du fonctionnement de l'unité de chauffage, cet anneau 23 percé de trous 24 régularise le flux de fluide caloporteur qui entre par la tubulure 13 et qui monte vers les trous 22.A ring 23 pierced with eight holes 24 is mounted between the outer wall 1 and the first inner partition 4, at one level intermediate between the inlet pipe 13 and the holes 22 which are arranged in the first inner partition 4. During the operation of the heating unit, this ring 23 pierced with holes 24 regulates the flow of heat transfer fluid which enters through the tubing 13 and which rises towards the holes 22.

    On notera qu'un espace est ménagé entre la seconde cloison intérieure 5 et la première paroi d'extrémité 2, ce qui met le second espace annulaire 7 en communication avec le canal central 8.It will be noted that a space is provided between the second inner partition 5 and the first end wall 2, which puts the second annular space 7 in communication with the central channel 8.

    Deux thermoplongeurs électriques 25 sont situés dans le canal central 8. Ces thermoplongeurs 25 sont fixés dans une embase 26 qui est vissée dans l'anneau 10, un pont 27 assurant l'étanchéité du montage.Two electric immersion heaters 25 are located in the central channel 8. These immersion heaters 25 are fixed in a base 26 which is screwed into the ring 10, a bridge 27 sealing the mounting.

    Des connecteurs 28 permettent de raccorder les thermoplongeurs 25 à des câbles d'alimentation électrique.Connectors 28 make it possible to connect the immersion heaters 25 to power cables.

    Des épaulements 29, 30 sont destinés à la fixation de l'unité de chauffage sur un support approprié. Shoulders 29, 30 are intended for fixing the unit heating on a suitable support.

    Lors du fonctionnement de l'unité de chauffage, un thermo-plongueur 25 ou les deux thermoplongeurs 25 sont mis en fonctionnement. Pendant ce temps, le fluide caloporteur circule dans l'unité de chauffage en entrant par l'entrée 13, en remontant dans le premier espace annulaire 6, en pénétrant par les trous 22 dans le second espace annulaire 7, en descendant dans le second espace annulaire 7 et en remontant dans le canal central 8 jusqu'à la sortie 14.When operating the heating unit, a thermo-plunger Or both heaters 25 are operated. Meanwhile, the heat transfer fluid circulates in the unit of heating entering through the entrance 13, going back in the first annular space 6, penetrating through the holes 22 in the second space ring 7, descending into the second annular space 7 and going up the central canal 8 to exit 14.

    Lors de sa traversée du canal central 8, le fluide caloporteur est en contact direct avec des thermoplongeurs 25 qui le portent à la température souhaitée. Toutefois, grâce à la conductibilité thermique des cloisons intérieures 4 et 5, le fluide caloporteur est déjà préchauffé au cours de son passage dans le premier espace annulaire 6 et ensuite surtout au cours de son passage dans le second espace annulaire 7 dans lequel il entre en contact non seulement avec la seconde cloison intermédiaire 5 mais également avec les éléments de transfert de chaleur 16, 17 et 20.During its crossing of the central channel 8, the heat transfer fluid is in direct contact with immersion heaters which carry it to the desired temperature. However, thanks to the thermal conductivity of internal partitions 4 and 5, the coolant is already preheated course of its passage in the first annular space 6 and then especially during its passage in the second annular space 7 in which it comes into contact not only with the second partition intermediate 5 but also with the transfer elements of heat 16, 17 and 20.

    Une unité de chauffage telle que décrite est destinée à être branchée dans le circuit de canalisations d'une installation de chauffage central. Dans le circuit de canalisations d'une telle installation sont généralement branchés plusieurs radiateurs, au moins une unité de chauffage, au moins une pompe de circulation et au moins un dispositif d'expansion. L'installation comprend, en outre, au moins un thermostat d'ambiance et un poste de commande automatisé apte à recevoir les signaux du ou des thermostats d'ambiance et des sondes thermostatiques de l'unité de chauffage (ou des unités de chauffage), et à commander la mise en fonctionnement et l'arrêt de fonctionnement de la pompe de circulation (ou des pompes de circulation) et du ou des thermoplongeurs de l'unité de chauffage (ou des unités de chauffage).A heating unit as described is intended to be connected to the piping system of a heating system central. In the pipe circuit of such an installation are generally connected several radiators, at least one unit of heating, at least one circulation pump and at least one device expansion. The installation further comprises at least one thermostat room and an automated control station capable of receiving signals from the room thermostats and thermostatic probes of the heating unit (or heating units), and to control the start-up and shutdown of the pump circulation (or circulation pumps) and the immersion heater (s) of the heating unit (or heating units).

    La capacité de chauffage d'une unité de chauffage dépend évidemment de la puissance du ou des thermoplongeurs montés dans l'unité. Le choix de thermoplongeurs de puissance appropriés permet de répondre à une capacité de chauffage souhaitée.The heating capacity of a heating unit depends obviously the power of the or immersion heaters mounted in unit. The choice of suitable power immersion heaters allows you to meet a desired heating capacity.

    Il peut être souhaitable de brancher deux ou plusieurs unités de chauffage, en parallèle, dans le circuit d'une installation de chauffage central. Il est en outre avantageux que deux thermoplongeurs soient montés dans chaque unité de chauffage.It may be desirable to connect two or more units heating, in parallel, in the circuit of a heating installation central. It is furthermore advantageous if two immersion heaters are mounted in each heating unit.

    Le poste de commande de l'installation peut alors être programmé pour que, en fonction du besoin de chauffage, un ou deux thermoplongeurs d'une ou plusieurs unités de chauffage soient mis en fonctionnement Le poste de commande est également programmé pour que la ou les unités de chauffage ne puissent fonctionner que lorsque la ou les pompes de circulation fonctionnent.The control station of the installation can then be programmed so that, depending on the need for heating, one or two heaters of one or more heating units are The control station is also programmed to that the heating unit (s) can only operate when the or the circulation pumps are working.

    Les unités de chauffage suivant l'invention sont très peu encombrantes, sont de construction très simple, et permettent une grande souplesse de fonctionnement de l'installation dans laquelle elles sont branchées.The heating units according to the invention are very few bulky, are of very simple construction, and allow a great flexibility of operation of the installation in which they are connected.

    Le fluide caloporteur qu'on fait circuler dans l'installation est de préférence de l'huile minérale pour transfert de calories. Ceci permet notamment de chauffer le fluide caloporteur à une température supérieure à 100°C, et cela reste possible, sans problème, même à haute altitude, dans les régions montagneuses.The heat transfer fluid that is circulated in the installation is preferably mineral oil for transferring calories. this allows in particular to heat the heat transfer fluid to a higher temperature at 100 ° C, and it remains possible, without problem, even at high altitude, in mountainous regions.

    Une unité de chauffage suivant l'invention est un appareil compact qui contient seulement un faible volume de fluide caloporteur et qui, de ce fait, a une faible inertie thermique.A heating unit according to the invention is a device compact which contains only a small volume of coolant and which, therefore, has a low thermal inertia.

    Si les radiateurs ou convecteurs montés dans l'installation sont du type à grande surface de rayonnement et faible volume interne, l'installation dans son ensemble aura une faible inertie thermique, ce qui constitue un réel avantage.If radiators or convectors mounted in the installation are of the type with large radiation surface and low internal volume, the installation as a whole will have a low thermal inertia, which is a real advantage.

    Claims (21)

    1. Heating unit for heat-transfer fluid for a central heating installation, characterised in that it consists of a reservoir having a tubular external wall (1), a first end wall (2) and a second end wall (3), these walls (1, 2, 3) delimiting a substantially cylindrical space, a first tubular internal partition (4) and a second tubular internal partition (5), substantially concentric with the tubular external wall (1) being mounted in the reservoir, the second internal partition (5) having a diameter smaller than that of the first internal partition (4), a first annular space (5) being situated between the tubular external wall (1) and the first internal partition (4), a second annular space (7) being situated between the first internal partition (4) and the second internal partition (5), a central pipe (8) being situated inside the second internal partition (5), the second annular space (7) being in communication with the central channel (8) close to the first end wall (2) and in communication with the first annular space (6) close to the second end wall (3), the reservoir being provided with an inlet orifice (13) opening out in the first annular space (6) close to the first end wall (2), and an orifice (14), in the second end wall (3), opening out from the central pipe (8), at least one electric immersion heater (25) being mounted in the central pipe (8), at least one thermostatic sensor (19) being mounted in the reservoir.
    2. Heating unit according to Claim 1, characterised in that the tubular external wall (1), the first and second end walls (2, 3) and the first internal partition (4) are made from steel.
    3. Heating unit according to any one of the preceding claims, characterised in that the second internal partition (5) is made from steel.
    4. Heating unit according to either one of Claims 1 and 2, characterised in that the second internal partition (5) is made from copper.
    5. Heating unit according to any one of the preceding claims, characterised in that it comprises heat transfer elements situated in the said second annular space (7) and fixed to the said second internal partition (5).
    6. Heating unit according to Claim 5, characterised in that the said heat transfer elements consist of two rings (16, 17) spaced apart from one another, fixed to the said second internal partition (5) and disposed perpendicular to the axis thereof, these two rings (16, 17) having several holes (21) in them and being connected together by means of several metallic bars (20), spaced apart from each other.
    7. Heating unit according to Claim 6, characterised in that the said metallic bars (20) have a ribbed external surface.
    8. Heating unit according to either one of Claims 6 and 7, characterised in that the said two rings (16, 17) fixed to the second internal partition (5) are made from steel.
    9. Heating unit according to either of one of Claims 6 and 7, characterised in that the said two rings (16, 17) fixed to the second internal partition (5) are made from copper.
    10. Heating unit according to any one of Claims 6 to 9, characterised in that the said metallic bars (20) are made from copper.
    11. Heating unit according to any one of the preceding claims, characterised in that it comprises at least one thermostatic sensor (19) mounted in the said second annular space (7).
    12. Heating unit according to any one of the preceding claims, characterised in that several openings (22) distributed over the periphery of the said first internal partition (4), close to the second end wall (3), put the first annular space (6) and the second annular space (7) in communication.
    13. Heating unit according to Claim 12, characterised in that, perpendicular to the axis of the reservoir, a ring (23) is mounted between the tubular external wall (1) and the said first internal partition (4), this ring (23), with several holes (24) in it distributed along its periphery, being situated at a level intermediate between the inlet orifice (13) of the reservoir and the openings (22) which are provided in the said first internal partition (4).
    14. Heating unit according to any one of the preceding claims, characterised in that a space is provided between the said second internal partition (5) and the first end wall (2), thus putting the second annular space (7) and the central pipe (8) in communication.
    15. Heating unit according to any one of the preceding claims, characterised in that the said inlet orifice (13) of the reservoir is provided in the tubular external wall (1).
    16. Heating unit according to any one of the preceding claims, characterised in that the reservoir is provided with means (29, 30) enabling it to be fixed to a support.
    17. Heating unit according to any one of the preceding claims, characterised in that two electric immersion heaters (25) are mounted in the said central pipe (8).
    18. Central heating installation with a heat-transfer fluid, comprising a pipework circuit in which there are connected one or more radiators or convectors, at least one circulation pump, at least one expansion device and at least one heating unit, the installation including at least one room thermostat, characterised in that at least one heating unit according to any one of the preceding claims is connected in the said circuit, the installation comprising an automated control station able to receive the signals from the room thermostat or thermostats and from the thermostatic sensor or sensors (19) of the heating unit or units and to control the start-up and stoppage of operation of the circulation pump or pumps and of the immersion heater or heaters of the heating unit or units.
    19. Central heating installation according to Claim 18, characterised in that two or more heating units according to any one of Claims 1 to 17 are connected in parallel in the said circuit.
    20. Central heating installation according to either one of Claims 18 and 19, characterised in that the heat-transfer fluid is oil.
    21. Central heating installation according to Claim 20, characterised in that the heating unit or units are able to heat the heat-transfer fluid to a temperature above 100°C.
    EP01937884A 2000-06-09 2001-05-17 Heating unit for heat-conveying medium for central heating installation Expired - Lifetime EP1290380B8 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    BE200000374 2000-06-09
    BE2000/0374A BE1013549A3 (en) 2000-06-09 2000-06-09 Unit heat transfer fluid heater for installation of central heating.
    PCT/BE2001/000087 WO2001094860A1 (en) 2000-06-09 2001-05-17 Heating unit for heat-conveying medium for central heating installation

    Publications (3)

    Publication Number Publication Date
    EP1290380A1 EP1290380A1 (en) 2003-03-12
    EP1290380B1 true EP1290380B1 (en) 2005-11-02
    EP1290380B8 EP1290380B8 (en) 2006-05-17

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    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP01937884A Expired - Lifetime EP1290380B8 (en) 2000-06-09 2001-05-17 Heating unit for heat-conveying medium for central heating installation

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    US (1) US6736329B2 (en)
    EP (1) EP1290380B8 (en)
    AT (1) ATE308726T1 (en)
    AU (1) AU2001263673A1 (en)
    BE (1) BE1013549A3 (en)
    CA (1) CA2411703A1 (en)
    DE (1) DE60114615T2 (en)
    WO (1) WO2001094860A1 (en)

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    Publication number Priority date Publication date Assignee Title
    CN100398900C (en) * 2005-04-30 2008-07-02 中国科学院等离子体物理研究所 Method for obtaining high-temperature hot fluid based on multi-layer piping structure
    JP5610679B2 (en) * 2008-09-01 2014-10-22 栗田工業株式会社 Liquid heater and liquid heating method
    US8107802B2 (en) * 2009-06-05 2012-01-31 Jeremy Lee Hollis Tankless electric water heater with efficient thermal transfer
    US9010318B2 (en) 2009-09-04 2015-04-21 Wisconsin Alumni Research Foundation Extended-range heat transfer fluid using variable composition
    GB2592026B (en) * 2020-02-12 2023-12-06 Singh Nagi Jaskiran An electric boiler

    Family Cites Families (8)

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    Publication number Priority date Publication date Assignee Title
    FR990616A (en) * 1949-07-15 1951-09-24 Elmeg Hot water dispenser
    US3558852A (en) * 1968-06-20 1971-01-26 Taylor Diving & Salvage Co Electric heating apparatus for supplying heated fluid to a diver{3 s clothing
    BE757754A (en) * 1969-10-28 1971-04-01 Singer Co THERMAL CONDITIONING INSTALLATION WITH SEVERAL HEAT PUMPS IN CLOSED CIRCUIT
    GB1462187A (en) * 1973-09-29 1977-01-19 Horne Eng Co Ltd Fluid supply systems
    US3968346A (en) * 1973-06-01 1976-07-06 Cooksley Ralph D Method and apparatus for electrically heating a fluid
    US3949565A (en) * 1974-08-09 1976-04-13 Fischer & Porter Co. Liquified gas evaporator
    US4531572A (en) * 1980-09-29 1985-07-30 Molitor Victor D Method of and unit for recovery of waste energy
    US4469935A (en) * 1982-06-03 1984-09-04 Francois Candela Combined domestic use and space heating electric water heater

    Also Published As

    Publication number Publication date
    WO2001094860A1 (en) 2001-12-13
    US20030164402A1 (en) 2003-09-04
    AU2001263673A1 (en) 2001-12-17
    EP1290380A1 (en) 2003-03-12
    DE60114615T2 (en) 2006-08-10
    EP1290380B8 (en) 2006-05-17
    CA2411703A1 (en) 2001-12-13
    US6736329B2 (en) 2004-05-18
    ATE308726T1 (en) 2005-11-15
    DE60114615D1 (en) 2005-12-08
    BE1013549A3 (en) 2002-03-05

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