WO2001075371A1 - Heat exchanging installation - Google Patents

Heat exchanging installation Download PDF

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Publication number
WO2001075371A1
WO2001075371A1 PCT/FR2001/000945 FR0100945W WO0175371A1 WO 2001075371 A1 WO2001075371 A1 WO 2001075371A1 FR 0100945 W FR0100945 W FR 0100945W WO 0175371 A1 WO0175371 A1 WO 0175371A1
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WO
WIPO (PCT)
Prior art keywords
line
liquid
main line
heat exchange
installation according
Prior art date
Application number
PCT/FR2001/000945
Other languages
French (fr)
Inventor
Alain Henri Gaignou
Original Assignee
Condatech
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Condatech filed Critical Condatech
Priority to AU2001248429A priority Critical patent/AU2001248429A1/en
Publication of WO2001075371A1 publication Critical patent/WO2001075371A1/en

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Classifications

    • 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
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves

Definitions

  • the present invention relates to a heat exchange installation.
  • a heat exchange installation comprises a thermal emitter, capable of delivering thermal energy, in the form of hot or cold.
  • a thermal emitter is for example a network of radiators or heated floors, a convector or a hot water heater. It can also be a cooling fan coil, a network of cooling floors, or industrial use.
  • This thermal emitter is connected to a source of thermal energy, such as for example a boiler or a refrigeration unit.
  • a hydraulic mixing device is provided, a main line of which extends between the source of thermal energy and the thermal emitter.
  • An annex mixing line is also provided, opening into the main line, so as to regulate the temperature of the liquid circulating in the main line, or even the power emitted by this liquid.
  • This mixing line is usually tapped on a return line, extending from the thermal emitter to the thermal energy source.
  • the hydraulic mixing device mentioned above is also provided with means making it possible to adjust the flow rate of liquid flowing from the mixing line to the main line. It is easily understood that the variation in the flow rate of the mixing liquid makes it possible to adjust the temperature of the liquid circulating in the main line, in the direction of the thermal emitter.
  • These adjustment means can be constituted by a three-way valve, disposed at the intersection of the main line and the mixing line.
  • This solution has certain drawbacks, however. Indeed, such a three-way valve is an expensive mechanical member. In addition, it requires constant maintenance, insofar as it consists of many mechanical parts.
  • a heat exchange installation comprising a heat supply apparatus.
  • the latter is supplied by a supply line, extending from a Venturi, also receiving a bypass line, as well as a line placed in communication with a boiler.
  • This known device has certain drawbacks, however, in that it does not allow variations in the temperature of the liquid flowing at the inlet of the heat supply apparatus to be made easily and flexibly.
  • the invention proposes to produce a heat exchange installation which overcomes the various drawbacks of the prior art, mentioned above.
  • a heat exchange installation comprising a thermal emitter, in particular at least a radiator, a heating floor or a reserve of liquid, a source of thermal energy, in particular a boiler, a main line intended for entrain liquid from the thermal energy source to the thermal emitter, a return line capable of entraining the liquid from the thermal emitter to the thermal energy source, and a mixing line placed in communication with the line main and the return line, the main line comprising means for locally reducing the cross-section of the liquid, so as to form a region of lower pressure of the liquid, and said mixing line opening into said region of lower pressure , said installation further comprising means for adjusting the flow rate of liquid intended to flow from the mixing line into the main line, which are arranged on the mixing line and are spaced from the main line.
  • FIG. 1 is a schematic view of a heat exchange installation according to the invention.
  • FIG. 1 is an axial sectional view more large scale, partially illustrating the hydraulic mixing device belonging to the installation of FIG. 1.
  • the heat exchange installation illustrated in FIG. 1, which is a heating installation, comprises a thermal emitter, which is a tank 2, forming a liquid reserve, in which a temperature T 1 prevails.
  • a source of thermal energy namely a boiler 4 conventionally provided with an exhaust duct 6.
  • the tank 2 is supplied with liquid, in this case domestic hot water, by a main line 8, extending between the boiler 4 and the tank 2.
  • This line 8 comprises an upstream zone 10, in which a temperature T 2 prevails, as well as a downstream zone 12, in which a temperature T 3 prevails.
  • the circulation of the liquid in the main line 8 is ensured by means of a pump 14.
  • a return line 16 extends, parallel to the main line 8, from the tank 2 in the direction of the boiler 4. There is, in this return line, a temperature T 4 and the circulation of the liquid is ensured there. via a pump 18.
  • An annex line 20, or mixing line is tapped on the return line 16 and extends in the direction of the main line 8.
  • This line 20 therefore makes it possible to pour, into the main line 8, a certain flow of liquid originating of the return line 16.
  • the value of this flow rate can be adjusted by means of a solenoid valve 22, which can be replaced for example by an all-or-nothing two-way valve, or even by a proportional valve.
  • the main line 8 and the mixing line 20 form a hydraulic mixing device.
  • FIG. 2 The intersection between the main line 8 and the mixing line 20 is illustrated more precisely in FIG. 2.
  • the main line 8 is provided with a Venturi tube 28 comprising, with reference to the direction of flow of the fluid in line 8, a converging portion 30, followed by a cylindrical portion 32 of constant section, and terminated by a diverging portion 34.
  • the converging portion is inclined, with respect to the main axis A of line 8, by an angle a between 10 and 45 °.
  • the walls of the divergent portion 34 are inclined relative to the same axis A, at an angle ⁇ between 2 and 30 °.
  • the line 20 opens, for its part, into the portion 32 of constant cross section of the Venturi tube 28.
  • the liquid flows in the main line 8 along the arrow F. Due to the presence of the Venturi tube 28 , which induces a local decrease in the cross-section of the fluid, a region 36 of lower local pressure is formed inside the middle portion 32. In this region 36, the pressure of the liquid is lower than that of the liquid present in the regions disposed immediately upstream and downstream, namely inside the portions 30 and 34.
  • the valve 22 is opened, in order to admit liquid into the downstream section of the annex line 20, in the vicinity of the main line 8. Due to the low local pressure prevailing in the region 36, a suction is created allowing the entrainment of the liquid, from the annex line 20.
  • the flow rate regulating liquid, flowing from the annex line 20 into the main line 8, can be modulated by modifying the opening of the solenoid valve 22.
  • the invention is not limited to the examples described and shown.
  • the boiler 4 which is a heat source, can be replaced by a refrigeration source.
  • You can also replace tank 2 with another type of transmitter thermal, such as in particular a network of radiators, a network of heating or cooling floors, or even a network of convectors or fan coil units.
  • the invention makes it possible to achieve the objectives mentioned above.
  • the fluid circulating in the annex mixing line is able to flow reliably, in the main line 8, due to the suction induced by the vacuum generated in the middle region 36 of the Venturi tube.
  • the means for regulating the flow, in this annex line are independent of the main line, namely that they are arranged at a distance from the latter, it is possible to use particularly simple and robust regulation means.
  • the temperature of the liquid flowing at the inlet of the thermal emitter can be modulated, in a particularly flexible and easy manner.
  • the adjustment means 22 can be implemented, so as to modify the flow rate of liquid flowing in the annex line.
  • an additional action can be obtained, at the level of the circulation pump 14, in order to vary the flow of liquid in the main line.

Abstract

The invention concerns an installation comprising a heat-emitting unit (2) a thermal energy source, a main line (8) for driving the liquid from the thermal energy source (4) to the heat-emitting unit (2), a return line (16), for driving the liquid from the heat-emitting unit (2) to the thermal energy source (4), and a mixing line (20) communicating with the main line (8) and the return line (16). The main line (8) comprises means for locally reducing the cross-section for the liquid passage, so as to form a region of lower pressure of the liquid the mixing line (20) emerging in the region of lower pressure, said installation further comprising means for adjusting (22) liquid flow rate designed to flow from the mixing line (20) into the main line (8), which are arranged on the mixing line and are away from the main line (8).

Description

INSTALLATION D'ECHANGE THERMIQUE HEAT EXCHANGE INSTALLATION
La présente invention concerne une installation d'échange thermique .The present invention relates to a heat exchange installation.
De manière classique, une installation d'échange thermique comprend un émetteur thermique, apte à délivrer de l'énergie thermique, sous forme de chaud ou de froid. Un tel émetteur thermique est par exemple un réseau de radiateurs ou de planchers chauffants, un convecteur ou un préparateur d'eau chaude. Il peut également s'agir d'un ventîlo-convecteur rafraîchissant, d'un réseau de planchers rafraîchissants, ou d'une utilisation industrielle.Conventionally, a heat exchange installation comprises a thermal emitter, capable of delivering thermal energy, in the form of hot or cold. Such a thermal emitter is for example a network of radiators or heated floors, a convector or a hot water heater. It can also be a cooling fan coil, a network of cooling floors, or industrial use.
Cet émetteur thermique est mis en relation avec une source d'énergie thermique, telle que par exemple une chaudière ou un groupe frigorifique. A cet effet, il est prévu un dispositif hydraulique de mélange, dont une ligne principale s'étend entre la source d'énergie thermique et l'émetteur thermique. Il est également prévu une ligne annexe de mélange, débouchant dans la ligne principale, de manière à réguler la température du liquide circulant dans la ligne principale, voire la puissance émise par ce liquide. Cette ligne de mélange est habituellement piquée sur une ligne de retour, s 'étendant de l'émetteur thermique vers la source d'énergie thermique.This thermal emitter is connected to a source of thermal energy, such as for example a boiler or a refrigeration unit. To this end, a hydraulic mixing device is provided, a main line of which extends between the source of thermal energy and the thermal emitter. An annex mixing line is also provided, opening into the main line, so as to regulate the temperature of the liquid circulating in the main line, or even the power emitted by this liquid. This mixing line is usually tapped on a return line, extending from the thermal emitter to the thermal energy source.
Le dispositif de mélange hydraulique évoqué ci-dessus est par ailleurs pourvu de moyens permettant de régler le débit de liquide s 'écoulant de la ligne de mélange vers la ligne principale. On conçoit aisément que la variation du débit de liquide de mélange permet d'ajuster la température du liquide circulant dans la ligne principale, en direction de l'émetteur thermique .The hydraulic mixing device mentioned above is also provided with means making it possible to adjust the flow rate of liquid flowing from the mixing line to the main line. It is easily understood that the variation in the flow rate of the mixing liquid makes it possible to adjust the temperature of the liquid circulating in the main line, in the direction of the thermal emitter.
Ces moyens de réglage peuvent être constitués par une vanne à trois voies, disposée à l'intersection de la ligne principale et de la ligne de mélange. Cette solution présente cependant certains inconvénients. En effet, une telle vanne à trois voies est un organe mécanique cher. Par ailleurs, elle nécessite une maintenance constante, dans la mesure où elle est constituée de nombreuses pièces mécaniques.These adjustment means can be constituted by a three-way valve, disposed at the intersection of the main line and the mixing line. This solution has certain drawbacks, however. Indeed, such a three-way valve is an expensive mechanical member. In addition, it requires constant maintenance, insofar as it consists of many mechanical parts.
On connaît également, par WO-A-99/31441 , une installation d'échange thermique, comprenant un appareil de fourniture de chaleur. Ce dernier est alimenté par une conduite d'alimenta- tion, s 'étendant à partir d'un Venturi, recevant par ailleurs une conduite de dérivation, ainsi qu'une conduite mise en communication avec une chaudière.Also known from WO-A-99/31441 is a heat exchange installation, comprising a heat supply apparatus. The latter is supplied by a supply line, extending from a Venturi, also receiving a bypass line, as well as a line placed in communication with a boiler.
Ce dispositif connu présente cependant certains inconvénients, en ce sens qu'il ne permet pas de réaliser, de manière aisée et souple, des variations de la température du liquide s 'écoulant à l'entrée de l'appareil de fourniture de chaleur.This known device has certain drawbacks, however, in that it does not allow variations in the temperature of the liquid flowing at the inlet of the heat supply apparatus to be made easily and flexibly.
L'invention se propose de réaliser une installation d'échange thermique permettant de pallier les différents inconvénients de l'art antérieur, évoqués ci -dessus. A cet effet, elle a pour objet une installation d'échange thermique comprenant un émetteur thermique, notamment au moins un radiateur, un plancher chauffant ou une réserve de liquide, une source d'énergie thermique, notamment une chaudière, une ligne principale destinée à entraîner du liquide depuis la source d'énergie thermique vers l'émetteur thermique, une ligne de retour, apte à entraîner le liquide depuis l'émetteur thermique vers la source d'énergie thermique, et une ligne de mélange mise en communication avec la ligne principale et la ligne de retour, la ligne principale comprenant des moyens de diminution locale de la section de passage du liquide, de manière à former une région de plus faible pression du liquide, et ladite ligne de mélange débouchant dans ladite région de plus faible pression, ladite installation comprenant en outre des moyens de réglage du débit de liquide destiné à s'écouler de la ligne de mélange dans la ligne principale, qui sont disposés sur la ligne de mélange et sont distants de la ligne principale.The invention proposes to produce a heat exchange installation which overcomes the various drawbacks of the prior art, mentioned above. For this purpose, it relates to a heat exchange installation comprising a thermal emitter, in particular at least a radiator, a heating floor or a reserve of liquid, a source of thermal energy, in particular a boiler, a main line intended for entrain liquid from the thermal energy source to the thermal emitter, a return line capable of entraining the liquid from the thermal emitter to the thermal energy source, and a mixing line placed in communication with the line main and the return line, the main line comprising means for locally reducing the cross-section of the liquid, so as to form a region of lower pressure of the liquid, and said mixing line opening into said region of lower pressure , said installation further comprising means for adjusting the flow rate of liquid intended to flow from the mixing line into the main line, which are arranged on the mixing line and are spaced from the main line.
L'invention va être décrite ci-dessous, en référence aux dessins annexés, donnés uniquement à titre d'exemples non limitatifs et dans lesquels : la figure 1 est une vue schématique d'une installation d'échange thermique conforme à l'invention ; etThe invention will be described below, with reference to the accompanying drawings, given only by way of nonlimiting examples and in which: FIG. 1 is a schematic view of a heat exchange installation according to the invention; and
- la figure 2 est une vue en coupe axiale à plus grande échelle, illustrant partiellement le dispositif de mélange hydraulique appartenant à l'installation de la figure 1.- Figure 2 is an axial sectional view more large scale, partially illustrating the hydraulic mixing device belonging to the installation of FIG. 1.
L'installation d'échange thermique illustrée à la figure 1, qui est une installation de chauffage, comprend un émetteur thermique, qui est une cuve 2, formant réserve de liquide, dans laquelle règne une température T1. Il est par ailleurs prévu une source d'énergie thermique, à savoir une chaudière 4 pourvue, de façon classique, d'un conduit d'échappement 6. La cuve 2 est alimentée en liquide, en l'occurrence en eau chaude sanitaire, par une ligne principale 8, s 'étendant entre la chaudière 4 et la cuve 2. Cette ligne 8 comporte une zone amont 10, dans laquelle règne une température T2, ainsi qu'une zone aval 12, dans laquelle règne une température T3. La circulation du liquide dans la ligne principale 8 est assurée par l'intermédiaire d'une pompe 14.The heat exchange installation illustrated in FIG. 1, which is a heating installation, comprises a thermal emitter, which is a tank 2, forming a liquid reserve, in which a temperature T 1 prevails. There is also provided a source of thermal energy, namely a boiler 4 conventionally provided with an exhaust duct 6. The tank 2 is supplied with liquid, in this case domestic hot water, by a main line 8, extending between the boiler 4 and the tank 2. This line 8 comprises an upstream zone 10, in which a temperature T 2 prevails, as well as a downstream zone 12, in which a temperature T 3 prevails. The circulation of the liquid in the main line 8 is ensured by means of a pump 14.
Une ligne de retour 16 s'étend, de façon parallèle à la ligne principale 8, depuis la cuve 2 en direction de la chaudière 4. Il règne, dans cette ligne de retour, une température T4 et la circulation du liquide y est assurée par l'intermédiaire d'une pompe 18.A return line 16 extends, parallel to the main line 8, from the tank 2 in the direction of the boiler 4. There is, in this return line, a temperature T 4 and the circulation of the liquid is ensured there. via a pump 18.
Une ligne annexe 20, ou ligne de mélange, est piquée sur la ligne de retour 16 et s'étend en direction de la ligne principale 8. Cette ligne 20 permet donc de déverser, dans la ligne principale 8, un certain débit de liquide provenant de la ligne de retour 16. La valeur de ce débit peut être réglée par l'intermédiaire d'une électrovanne 22, qui peut être remplacée par exemple par une vanne à deux voies tout ou rien, ou bien encore par une vanne proportionnelle. La ligne principale 8 et la ligne de mélange 20 forment un dispositif de mélange hydraulique.An annex line 20, or mixing line, is tapped on the return line 16 and extends in the direction of the main line 8. This line 20 therefore makes it possible to pour, into the main line 8, a certain flow of liquid originating of the return line 16. The value of this flow rate can be adjusted by means of a solenoid valve 22, which can be replaced for example by an all-or-nothing two-way valve, or even by a proportional valve. The main line 8 and the mixing line 20 form a hydraulic mixing device.
Les extrémités, opposées à la cuve 2, de la ligne principale 8 et de la ligne de retour 16, sont mutuellement reliées par l'intermédiaire d'un serpentin 24 s 'étendant dans la chaudière 4. Par ailleurs, ces lignes principale 8 et de retour 16 sont mises en relation d'échange thermique, dans leurs zones voisines de la cuve 2, par un échangeur de chaleur 26 visant à homogénéiser les températures du liquide qui y c i rcul e .The ends, opposite to the tank 2, of the main line 8 and the return line 16, are mutually connected by means of a coil 24 extending in the boiler 4. Furthermore, these main lines 8 and return 16 are put in heat exchange relation, in their zones close to the tank 2, by a heat exchanger 26 aiming to homogenize the temperatures of the liquid which there ci rcul e.
L' intersection entre la ligne principale 8 et la ligne de mélange 20 est illustrée de façon plus précise à la figure 2. Comme le montre cette dernière, la ligne principale 8 est munie d'un tube de Venturi 28 comprenant, en faisant référence au sens d'écoulement du fluide dans la ligne 8, une portion convergente 30, suivie d'une portion 32 cylindrique de section constante, et terminée par une portion divergente 34.The intersection between the main line 8 and the mixing line 20 is illustrated more precisely in FIG. 2. As the latter shows, the main line 8 is provided with a Venturi tube 28 comprising, with reference to the direction of flow of the fluid in line 8, a converging portion 30, followed by a cylindrical portion 32 of constant section, and terminated by a diverging portion 34.
La portion convergente est inclinée, par rapport à l'axe principal A de la ligne 8, d'un angle a compris entre 10 et 45°. Les parois de la portion divergente 34 sont inclinées par rapport au même axe A, selon un angle β compris entre 2 et 30°. La ligne 20 débouche, pour sa part, dans la portion 32 de section constante du tube de Venturi 28. En service, le liquide s'écoule dans la ligne principale 8 selon la flèche F. Du fait de la présence du tube de Venturi 28, qui induit une diminution locale de la section de passage du fluide, il se forme, à l'intérieur de la portion médiane 32, une région 36 de plus faible pression locale. Dans cette région 36, la pression du liquide est inférieure à celle du liquide présent dans les régions disposées immédiatement en amont et en aval, à savoir à l'intérieur des portions 30 et 34.The converging portion is inclined, with respect to the main axis A of line 8, by an angle a between 10 and 45 °. The walls of the divergent portion 34 are inclined relative to the same axis A, at an angle β between 2 and 30 °. The line 20 opens, for its part, into the portion 32 of constant cross section of the Venturi tube 28. In service, the liquid flows in the main line 8 along the arrow F. Due to the presence of the Venturi tube 28 , which induces a local decrease in the cross-section of the fluid, a region 36 of lower local pressure is formed inside the middle portion 32. In this region 36, the pressure of the liquid is lower than that of the liquid present in the regions disposed immediately upstream and downstream, namely inside the portions 30 and 34.
Si l'on désire ajuster la température du liquide circulant dans la zone aval 12 de la ligne principale 8, de sorte que la température T3 soit différente de la température T2, on ouvre la vanne 22, afin d'admettre du liquide dans le tronçon aval de la ligne annexe 20, au voisinage de la ligne principale 8. Du fait de la faible pression locale régnant dans la région 36, il se crée une aspiration permettant l'entraînement du liquide, depuis la ligne annexe 20. Le débit du liquide de régulation, s 'écoulant de la ligne annexe 20 dans la ligne principale 8, peut être modulé en modifiant l'ouverture de 1 ' électrovanne 22. L'invention n'est pas limitée aux exemples décrits et représentés. Ainsi, on peut remplacer la chaudière 4, qui est une source de chaleur, par une source frigorifique. On peut remplacer également la cuve 2 par un autre type d'émetteur thermique, tel que notamment un réseau de radiateurs, un réseau de planchers chauffants ou refroidissants, ou bien encore un réseau de convecteurs ou de ventilo-convecteurs .If it is desired to adjust the temperature of the liquid circulating in the downstream zone 12 of the main line 8, so that the temperature T 3 is different from the temperature T 2 , the valve 22 is opened, in order to admit liquid into the downstream section of the annex line 20, in the vicinity of the main line 8. Due to the low local pressure prevailing in the region 36, a suction is created allowing the entrainment of the liquid, from the annex line 20. The flow rate regulating liquid, flowing from the annex line 20 into the main line 8, can be modulated by modifying the opening of the solenoid valve 22. The invention is not limited to the examples described and shown. Thus, the boiler 4, which is a heat source, can be replaced by a refrigeration source. You can also replace tank 2 with another type of transmitter thermal, such as in particular a network of radiators, a network of heating or cooling floors, or even a network of convectors or fan coil units.
L'invention permet de réaliser des objectifs précédemment mentionnés.The invention makes it possible to achieve the objectives mentioned above.
En effet, le fluide circulant dans la ligne annexe de mélange est à même de s'écouler de façon fiable, dans la ligne principale 8, du fait de l'aspiration induite par la dépression générée dans la région médiane 36 du tube de Venturi. Etant donné que les moyens de régulation du débit, dans cette ligne annexe, sont indépendants de la ligne principale, à savoir qu'ils sont disposés à distance de cette dernière, il peut être fait appel à des moyens de régulation particulièrement simples et robustes. Par ailleurs, conformément à l'invention, la température du liquide s 'écoulant en entrée de l'émetteur thermique peut être modulée, de façon particulièrement souple et aisée. A cet effet, les moyens de réglage 22 peuvent être mis en oeuvre, de manière à modifier le débit de liquide s 'écoulant dans la ligne annexe. En outre, une action supplémentaire peut être obtenue, au niveau de la pompe de circulation 14, afin de faire varier le débit de liquide dans la ligne principale. Indeed, the fluid circulating in the annex mixing line is able to flow reliably, in the main line 8, due to the suction induced by the vacuum generated in the middle region 36 of the Venturi tube. Since the means for regulating the flow, in this annex line, are independent of the main line, namely that they are arranged at a distance from the latter, it is possible to use particularly simple and robust regulation means. Furthermore, in accordance with the invention, the temperature of the liquid flowing at the inlet of the thermal emitter can be modulated, in a particularly flexible and easy manner. To this end, the adjustment means 22 can be implemented, so as to modify the flow rate of liquid flowing in the annex line. In addition, an additional action can be obtained, at the level of the circulation pump 14, in order to vary the flow of liquid in the main line.

Claims

REVENDICATIONS
1. Installation d'échange thermique comprenant un émetteur thermique (2), notamment au moins un radiateur, un plancher chauffant ou une réserve de liquide, une source d'énergie thermique, notamment une chaudière (4), une ligne principale (8) destinée à entraîner du liquide depuis la source d'énergie thermique (4) vers l'émetteur thermique (2), une ligne de retour (16) , destinée à entraîner le liquide depuis l'émetteur thermique (2) vers la source d'énergie thermique (4) , et une ligne de mélange (20) mise en communication avec la ligne principale (8) et la ligne de retour (16) , la ligne principale (8) comprenant des moyens (28) de diminution locale de la section de passage du liquide, de manière à former une région (36) de plus faible pression du liquide, la ligne de mélange (20) débouchant dans cette région de plus faible pression (36) , ladite installation comprenant en outre des moyens de réglage (22) du débit de liquide destiné à s'écouler de la ligne de mélange (20) dans la ligne principale (8) , qui sont disposés sur la ligne de mélange (20) et sont distants de la ligne principale (8) .1. A heat exchange installation comprising a thermal emitter (2), in particular at least one radiator, a heating floor or a reserve of liquid, a source of thermal energy, in particular a boiler (4), a main line (8) intended to entrain liquid from the thermal energy source (4) towards the thermal emitter (2), a return line (16), intended to entrain the liquid from the thermal emitter (2) towards the source of thermal energy (4), and a mixing line (20) placed in communication with the main line (8) and the return line (16), the main line (8) comprising means (28) for local reduction of the liquid passage section, so as to form a region (36) of lower liquid pressure, the mixing line (20) opening into this region of lower pressure (36), said installation further comprising adjustment means (22) of the flow of liquid intended to flow from the line d e mixture (20) in the main line (8), which are arranged on the mixing line (20) and are distant from the main line (8).
2. Installation d'échange thermique selon la revendication 1, caractérisée en ce qu'elle comprend en outre des moyens (14) de circulation du liquide dans la ligne principale (8), disposés entre les moyens (28) de diminution locale de la section de passage du liquide et l'émetteur thermique (2) .2. A heat exchange installation according to claim 1, characterized in that it further comprises means (14) for circulating the liquid in the main line (8), disposed between the means (28) for local reduction of the liquid passage section and thermal emitter (2).
3. Installation d'échange thermique selon la revendication 1 ou 2 , caractérisée en ce que les moyens de réglage sont de type tout ou rien, et comprennent notamment une électro- vanne (22) , ou une vanne à deux voies tout ou rien.3. A heat exchange installation according to claim 1 or 2, characterized in that the adjustment means are of the all-or-nothing type, and in particular comprise an electro-valve (22), or a two-way all-or-nothing valve.
4. Installation d'échange thermique selon la revendication 1 ou 2 , caractérisée en ce que les moyens de réglage sont de type proportionnel, et comprennent notamment une vanne proportionnelle.4. A heat exchange installation according to claim 1 or 2, characterized in that the adjustment means are of the proportional type, and in particular comprise a proportional valve.
5. Installation selon l'une quelconque des revendications précédentes, caractérisée en ce que la ligne de mélange (20) débouche dans la région de plus faible pression (36) . 5. Installation according to any one of the preceding claims, characterized in that the mixing line (20) opens into the region of lower pressure (36).
6. Installation selon l'une des revendications précédentes, caractérisée en ce que les moyens de diminution locale de la section (36) comprennent un tube de Venturi (28) dont est pourvue la ligne principale (8) . 6. Installation according to one of the preceding claims, characterized in that the local reduction means of the section (36) comprise a Venturi tube (28) which is provided with the main line (8).
7. Installation selon la revendication 6, caractérisée en ce que le tube de Venturi comprend, en faisant référence au sens d'écoulement du liquide, une portion convergente (30) , puis une portion de section constante (32) et une portion divergente (34), la ligne de mélange (20) débouchant dans la portion de section constante (32) .7. Installation according to claim 6, characterized in that the Venturi tube comprises, with reference to the direction of flow of the liquid, a converging portion (30), then a portion of constant section (32) and a diverging portion ( 34), the mixing line (20) opening into the portion of constant section (32).
8. Installation d'échange thermique selon l'une des revendications précédentes, caractérisée en ce que la ligne de retour (16) et la ligne principale (8) sont mises en communication par un serpentin d'échange thermique (24) s 'étendant à l'intérieur de la source d'énergie thermique (4) .8. Heat exchange installation according to one of the preceding claims, characterized in that the return line (16) and the main line (8) are placed in communication by a heat exchange coil (24) extending inside the thermal energy source (4).
9. Installation d'échange thermique selon l'une des revendications précédentes, caractérisée en ce que, au voisinage de l'émetteur thermique (2) , la ligne principale (8) et la ligne de retour (16) sont mises en relation d'échange thermique, dans un échangeur de chaleur (26) d'homogénéisation de leurs températures . 9. A heat exchange installation according to one of the preceding claims, characterized in that, in the vicinity of the thermal emitter (2), the main line (8) and the return line (16) are connected d 'heat exchange, in a heat exchanger (26) for homogenizing their temperatures.
PCT/FR2001/000945 2000-03-31 2001-03-28 Heat exchanging installation WO2001075371A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001248429A AU2001248429A1 (en) 2000-03-31 2001-03-28 Heat exchanging installation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR00/04128 2000-03-31
FR0004128A FR2807148B1 (en) 2000-03-31 2000-03-31 HYDRAULIC MIXING DEVICE AND THERMAL EXCHANGE INSTALLATION PROVIDED WITH SUCH A DEVICE

Publications (1)

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WO2001075371A1 true WO2001075371A1 (en) 2001-10-11

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FR (1) FR2807148B1 (en)
WO (1) WO2001075371A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008019186A1 (en) * 2008-04-17 2009-11-05 Robert Bosch Gmbh Method and device for decentralized water heating

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999031441A1 (en) * 1997-12-15 1999-06-24 Jandy Industries, Inc. Venturi apparatus for flow control

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999031441A1 (en) * 1997-12-15 1999-06-24 Jandy Industries, Inc. Venturi apparatus for flow control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008019186A1 (en) * 2008-04-17 2009-11-05 Robert Bosch Gmbh Method and device for decentralized water heating

Also Published As

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AU2001248429A1 (en) 2001-10-15
FR2807148B1 (en) 2005-08-19
FR2807148A1 (en) 2001-10-05

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