EP3943857A1 - Cooling installation with an evaporative condenser comprising a system for containment of coolant leaks - Google Patents

Cooling installation with an evaporative condenser comprising a system for containment of coolant leaks Download PDF

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Publication number
EP3943857A1
EP3943857A1 EP21184645.6A EP21184645A EP3943857A1 EP 3943857 A1 EP3943857 A1 EP 3943857A1 EP 21184645 A EP21184645 A EP 21184645A EP 3943857 A1 EP3943857 A1 EP 3943857A1
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EP
European Patent Office
Prior art keywords
refrigerant
side walls
air condenser
wall
installation according
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Granted
Application number
EP21184645.6A
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German (de)
French (fr)
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EP3943857B1 (en
Inventor
Philippe Duhamel
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Jacir SAS
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Jacir SAS
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
    • F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
    • F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/007—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage

Definitions

  • the present invention relates to the field of cold generation, in particular condensation devices.
  • the present invention relates to refrigeration circuits.
  • a refrigeration circuit generally comprises successively a compressor, a condenser, an expansion valve and an evaporator.
  • the refrigeration circuits make it possible to efficiently and economically evacuate to an external environment heat generated by a device, for example an air conditioning installation, a refrigerator, or industrial processes.
  • the present invention finds a preferred application in so-called “dry” or “adiabatic” air condensers.
  • the condensation of the refrigerant is carried out by ventilation of an air flow A set in motion by one or more fans 2 on one or more heat exchange batteries 3 containing the refrigerant and configured to pass the refrigerant from a gaseous form F G to a liquid form F L .
  • the movement of the air fluid A is represented by arrows.
  • the adiabatic air condenser differs from the dry air condenser, illustrated on the figure 1 , in that it comprises a device 4 for humidifying the air upstream of the heat exchange coils 3.
  • the device 4 for humidifying the air comprises a medium 4a, a system 4b for sprinkling with a fluid, for example water, arranged above said media 4a and configured to moisten said media 4a and a system 4c for recovering or collecting moistening fluid after having passed through the media 4a.
  • a fluid for example water
  • the condensing coil or heat exchanger comprises a plurality of tubes and fins or micro-channels.
  • a refrigerant circulates in the tubes of the condensing coil.
  • the tubes thereof are connected to a refrigerant inlet manifold and to a refrigerant outlet manifold and according to the number of passes between them by 180° bends.
  • the connections of the tubes to the manifolds or to each other via 180° elbows are made by welding, which increases the risk of refrigerant leaks.
  • the condenser makes it possible to condense the refrigerant, that is to say to change it from a gaseous form to a liquid form.
  • the refrigerant is very often harmful to the environment, in particular vis-à-vis the ozone layer and the greenhouse effect and/or toxic.
  • the preferred refrigerant to reduce its impact on the greenhouse effect and the ozone layer is ammonia (NH3).
  • NH3 ammonia
  • ammonia is particularly toxic and flammable.
  • the object of the present invention is therefore to overcome the above drawbacks and to improve so-called “dry” or “adiabatic” air condensers in order to control any leaks of refrigerant, in particular at the level of the heat exchange coils.
  • the subject of the invention is a refrigeration installation, at least part of which is located in a technical room and comprising a cooling circuit in which a refrigerant fluid circulates and comprising an air condenser, a dry or adiabatic air condenser mounted outside the technical room and comprising an envelope delimited by at least two side walls, a bottom, a wall top and at least one transverse wall extending between the side walls.
  • the air condenser further comprising at least one heat exchanger or heat exchange battery in which a refrigerant fluid circulates, at least one refrigerant inlet manifold and at least one manifold of said refrigerant fluid connected to the heat exchanger and extending outward from the air condenser.
  • the air condenser includes a refrigerant leak containment system from at least one of the refrigerant manifolds to contain fluid leaks relative to the outside of the air condenser and having the form of an open casing configured to adapt to an opening of the technical room.
  • the leak containment system is thus configured to confine fluid leaks with respect to the external environment and forms with the side wall of the casing and with the technical room a closed casing.
  • closed casing means a casing or casing that is sealed against the external environment.
  • the heat exchanger is, for example, delimited by two lateral sides and two opposite faces.
  • the air condenser comprises an envelope delimited by side walls, namely two side walls, a transverse front wall and a transverse rear wall extending between the side walls.
  • the envelope may also include a top wall and a bottom.
  • the heat exchanger is, for example, mounted in the casing.
  • At least one external lateral side of the heat exchange battery forms a lateral side wall of the casing of the air condenser.
  • the transverse wall, for example front, of the casing of the air condenser can be formed by one of the faces, for example front of the heat exchanger.
  • the leak containment system comprises at least one casing, preferably open, mounted on the transverse wall of the air condenser.
  • the leak containment system has the form of a closed housing.
  • the leak containment system comprises at least two side walls extending respectively from a side wall of the casing and an upper wall extending between the side walls, said walls at least partially surrounding the collectors of refrigerant.
  • the containment system may include a bottom wall extending between the side walls and parallel or not with the top wall.
  • the side walls extend vertically and are parallel to each other.
  • oblique side walls could be provided, one end of one side wall of which extends towards one end of the other side wall.
  • the top wall extends transversely between one end of the side walls.
  • the top wall may extend transversely between the side walls at another location.
  • the side walls are, for example, of identical heights.
  • one of the side walls could be of a smaller height than the other.
  • each of the side and upper walls comprises at least one seal fixed to the circumference of the leak containment system, for example the circumference in contact with the technical room and/or with the heat exchanger, in order to seal the internal volume delimited by said open casing and the technical room.
  • At least one side wall of the heat exchanger forms a side wall of the air condenser.
  • the side walls of the containment system extend from the side wall of the heat exchanger forming a side wall of the air condenser.
  • the air condenser comprises at least two heat exchangers each connected to a refrigerant inlet manifold and to a refrigerant outlet manifold.
  • the leak containment system has the form of at least two open casings or sleeves mounted on the transverse wall of the air-cooled condenser, each of the casings including at least partly one of the refrigerant fluid manifolds.
  • Each of the casings each comprising at least two side walls and an upper wall, or even a lower wall.
  • each of the casings extends respectively from a front face of the heat exchangers.
  • Each of the casings at least partially encompasses said front face of said heat exchangers.
  • Aerocondenser could also comprise an air humidification system upstream of the heat exchanger in the direction of circulation of the air flow.
  • the invention relates to a refrigeration installation, at least part of which is located in a technical room in which a refrigerant fluid circulates and comprising an air condenser as described above mounted outside the technical room, said containment system leaks being configured to adapt to an opening of the technical room.
  • the technical room comprises at least one refrigerant leak detection sensor.
  • the air condenser 10 comprises a casing 12 comprising four side walls here vertical, namely two side walls 12a, a transverse front wall 12b and a transverse rear wall 12c.
  • the casing 12 further comprises an upper wall 12d and a floor or lower wall forming a bottom 12e. All of the walls 12a, 12b, 12c, 12d, 12e are illustrated here in dotted lines in order to see no transparency inside, and delimit an internal enclosure.
  • the air condenser 10 further comprises two heat exchange batteries 14 or heat exchangers arranged in the internal enclosure of the casing 12 and each comprising a plurality of tubes 17a, 17b, 17c and fins (not shown) or microchannels. A refrigerant circulates in the tubes of each of the heat exchange batteries 14.
  • each heat exchange battery 14 comprises a front face 14a and a rear face 14b, opposite the front face, and two lateral sides, an outer lateral side 14c, on the outer side, and an inner lateral side 14d, opposite the outer lateral side 14c.
  • Each battery 14 comprises a refrigerant inlet manifold 15a and a refrigerant outlet manifold 15b.
  • the refrigerant inlet manifold 15a is connected to first tubes 17a of the battery on the side of the front face 14a of the battery and the refrigerant outlet manifold 15b is connected to second tubes 17b of the battery on the side of the front face 14a of the battery.
  • the outlet collector 15b could be connected to the tubes of the battery on the side of the rear face 14b of the battery.
  • the tubes 17a, 17b of each battery 14 are connected by welding respectively to the refrigerant inlet manifold 15a and to the refrigerant outlet manifold 15b.
  • the tubes 17a, 17b are produced by sections of pipes welded together and associated collector by numerous welds.
  • the refrigerant inlet manifolds 15a of the two batteries 14 are here connected by a refrigerant supply conduit 19a and the refrigerant fluid outlet manifolds 15b of the two batteries 14 are here connected by a fluid outlet conduit 19b refrigerant.
  • a refrigerant supply conduit 19a and the refrigerant fluid outlet manifolds 15b of the two batteries 14 are here connected by a fluid outlet conduit 19b refrigerant.
  • the rear face 14b of said batteries 14 also comprises a plurality 17c of tubes comprising welded 90° elbows for the circuiting of the batteries 14.
  • the air condenser 10 comprises a plurality of fans 16 mounted on the upper wall 12d of the casing 12.
  • the air condenser 10 is here an adiabatic air condenser comprising an air humidification device comprising two absorption media or members 18 configured to humidify the flow of air entering the batteries 14, each of the media 18 is associated with a battery 14. Each media 18 is arranged upstream of a battery 14 in the direction of circulation of the air flow set in motion by the fans 16.
  • the media is generally made of absorbent material.
  • the air humidification device further comprises a system (not shown) for spraying with a humidification fluid, for example water, arranged above each of the media 18 and configured to humidify said media 18 corresponding and a system 18a for recovering or collecting the humidification fluid after having passed through the media 18.
  • the air condenser 10 prefferably be “dry”, that is to say devoid of a humidification system and thus of media.
  • the lateral side walls 12a of the air condenser are distinct from the external lateral sides 14c of the batteries 14.
  • the air humidification device is arranged outside the casing 12.
  • the front wall of the casing of the air condenser is formed by the front faces 14a of the batteries 14.
  • the refrigerant inlet and outlet manifolds extend from the front wall of the envelope outwards.
  • the air condenser 10 comprises a system 40 for containing refrigerant leaks escaping from the refrigerant inlet and outlet manifolds 15a, 15b.
  • the leak containment system 40 has the form of an open casing or sleeve mounted on the side of the front face 14a of the batteries 14.
  • the sleeve 40 is mounted directly on the front face 14a of the batteries.
  • the envelope 12 comprises a front wall separate from the front faces of the batteries, the sleeve 40 is mounted directly on said front wall.
  • the sleeve 40 comprises two side walls 40a, 40b extending respectively from a side wall 12a of the casing 12 and an upper wall 40c extending between the side walls 40a, 40b.
  • the top wall 40c is offset in height relative to the top wall 12d of the casing 12. It could be provided that the top wall 40c extends from the top wall 12d of said casing 12. In the case where the side external side 14c of the batteries 14 forms the side walls of the air condenser 10, the side walls 40a, 40b extend from said external side sides 14c of the batteries 14.
  • the walls 40a, 40b, 40c of the containment system 40 are intended to be adapted to a technical room inside which the refrigeration installation is arranged in part and comprising in particular the rest of the refrigeration circuit.
  • the containment system 40 is configured to adapt to an opening (not shown) of the technical room in order to be inserted at least partially into said opening.
  • the air condenser uses outside air to condense the refrigerant, it is located outside the technical room.
  • the side walls 40a, 40b extend vertically and are parallel to each other.
  • oblique side walls could be provided, one end of one side wall of which extends towards one end of the other side wall.
  • top wall 40c extends transversely between one end of side walls 40a, 40b.
  • top wall 40c may extend transversely between side walls 40a, 40b at another location.
  • the side walls 40a, 40b are here of identical dimensions. As a variant, provision could be made for one of the side walls to be of a smaller height than the other.
  • Each of the side and top walls may include a seal on the circumference of the sleeve 40 in contact with the technical room, in order to seal the internal volume delimited by said sleeve 40, the technical room and the ground.
  • the sleeve 40 could also include a lower wall extending transversely between the side walls 40a, 40b, in particular in the case where the ground is not straight.
  • the leak containment system 40 could also be made for the leak containment system 40 to have the form of two open casings or sleeves each comprising two side walls and an upper wall, or even a lower wall. Each of the casings encompassing the front face 14a of each battery 14.
  • the technical room includes one or more sensors (not shown) configured to detect refrigerant leaks.
  • the invention it is possible to confine any leaks of refrigerant at the level of the inlet and outlet collectors of the refrigerant fluid circulating in the tubes of the heat exchange batteries of a dry or adiabatic air condenser.

Abstract

Aérocondenseur (10) comprenant une enveloppe (12) délimitée par au moins deux parois latérales (12a), un fond (12c), une paroi supérieure (12d), et au moins une paroi transversale (12b) s'étendant entre les parois latérales (12a), l'aérocondenseur comprenant en outre au moins un échangeur de chaleur (14) dans lequel circule un fluide frigorigène, au moins un collecteur (15a) d'entrée du fluide frigorigène et au moins un collecteur (15b) de sortie de fluide frigorigène reliés à l'échangeur de chaleur s'étendant vers l'extérieur de l'aérocondenseur.L'aérocondenseur comprend un système (40) de confinement de fuites de fluide frigorigène d'au moins un des collecteurs (15a, 15b) de fluide frigorigène.Aerocondenser (10) comprising an envelope (12) delimited by at least two side walls (12a), a bottom (12c), an upper wall (12d), and at least one transverse wall (12b) extending between the side walls (12a), the air condenser further comprising at least one heat exchanger (14) in which a refrigerant circulates, at least one refrigerant inlet manifold (15a) and at least one refrigerant outlet manifold (15b). refrigerant fluid connected to the heat exchanger extending outwards from the air condenser.The air condenser comprises a system (40) for containing refrigerant leaks from at least one of the collectors (15a, 15b) of Refrigerant.

Description

La présente invention concerne le domaine de la génération de froid, notamment les dispositifs de condensation.The present invention relates to the field of cold generation, in particular condensation devices.

Plus particulièrement, la présente invention concerne les circuits de frigorifiques.More particularly, the present invention relates to refrigeration circuits.

Un circuit frigorifique comprend généralement successivement un compresseur, un condenseur, un détendeur et un évaporateur.A refrigeration circuit generally comprises successively a compressor, a condenser, an expansion valve and an evaporator.

Les circuits frigorifiques permettent d'évacuer efficacement et économiquement vers un milieu extérieur une chaleur générée par un dispositif, par exemple une installation de climatisation, un réfrigérateur, ou des procédés industriels.The refrigeration circuits make it possible to efficiently and economically evacuate to an external environment heat generated by a device, for example an air conditioning installation, a refrigerator, or industrial processes.

La présente invention trouve une application privilégiée dans les aérocondenseurs dits « secs » ou « adiabatiques ».The present invention finds a preferred application in so-called “dry” or “adiabatic” air condensers.

Dans de tels aérocondenseurs 1 illustrés respectivement sur les figures 1 et 2, la condensation du fluide frigorigène s'effectue par ventilation d'un flux d'air A mis en mouvement par un ou plusieurs ventilateurs 2 sur une ou plusieurs batteries d'échange thermique 3 contenant le fluide frigorigène et configurées pour faire passer le fluide frigorigène d'une forme gazeuse FG à une forme liquide FL. Le mouvement du fluide d'air A est représenté par des flèches.In such air condensers 1 illustrated respectively on the figures 1 and 2 , the condensation of the refrigerant is carried out by ventilation of an air flow A set in motion by one or more fans 2 on one or more heat exchange batteries 3 containing the refrigerant and configured to pass the refrigerant from a gaseous form F G to a liquid form F L . The movement of the air fluid A is represented by arrows.

L'aérocondenseur adiabatique, illustré sur la figure 2, se distingue de l'aérocondenseur sec, illustré sur la figure 1, par le fait qu'il comprend un dispositif 4 d'humidification de l'air en amont des batteries d'échange thermique 3. Tel qu'illustré, le dispositif 4 d'humidification de l'air comprend un média 4a, un système 4b d'arrosage par un fluide, par exemple de l'eau, disposé au-dessus dudit média 4a et configuré pour humidifier ledit média 4a et un système 4c de récupération ou de collecte de fluide d'humidification après avoir traversé le média 4a. en variante, on pourrait prévoir de pulvériser le fluide d'humidification directement dans l'air en amont des batteries d'échange thermique, en utilisant ou pas un média.The adiabatic air condenser, illustrated on the picture 2 , differs from the dry air condenser, illustrated on the figure 1 , in that it comprises a device 4 for humidifying the air upstream of the heat exchange coils 3. As illustrated, the device 4 for humidifying the air comprises a medium 4a, a system 4b for sprinkling with a fluid, for example water, arranged above said media 4a and configured to moisten said media 4a and a system 4c for recovering or collecting moistening fluid after having passed through the media 4a. alternatively, provision could be made to spray the humidification fluid directly in the air upstream of the heat exchange coils, using or not a medium.

La batterie de condensation ou échangeur de chaleur comprend une pluralité de tubes et d'ailettes ou des micro-canaux. Un fluide frigorigène circule dans les tubes de la batterie de condensation. Les tubes de celle-ci sont reliés à un collecteur d'entrée du fluide frigorigène et à un collecteur de sortie du fluide frigorigène et suivant le nombre de passes entre eux par des coudes à 180°. Les connections des tubes aux collecteurs ou entre eux par l'intermédiaire de coudes à 180° s'effectuent par soudage, ce qui augmente le risque de fuite de fluide frigorigène.The condensing coil or heat exchanger comprises a plurality of tubes and fins or micro-channels. A refrigerant circulates in the tubes of the condensing coil. The tubes thereof are connected to a refrigerant inlet manifold and to a refrigerant outlet manifold and according to the number of passes between them by 180° bends. The connections of the tubes to the manifolds or to each other via 180° elbows are made by welding, which increases the risk of refrigerant leaks.

Le condenseur permet de condenser le fluide frigorigène, c'est-à-dire de le faire passer d'une forme gazeuse à une forme liquide.The condenser makes it possible to condense the refrigerant, that is to say to change it from a gaseous form to a liquid form.

Le fluide frigorigène est très souvent nocif pour l'environnement, notamment vis-à-vis de la couche d'ozone et de l'effet de serre et/ou toxique. De nos jours, le fluide frigorigène privilégié afin de réduire son impact sur l'effet de serre et la couche d'ozone est l'ammoniac (NH3). Toutefois, l'ammoniac est particulièrement toxique et inflammable.The refrigerant is very often harmful to the environment, in particular vis-à-vis the ozone layer and the greenhouse effect and/or toxic. Nowadays, the preferred refrigerant to reduce its impact on the greenhouse effect and the ozone layer is ammonia (NH3). However, ammonia is particularly toxic and flammable.

Il existe un besoin d'éviter toute fuite de fluide frigorigène dans les aérocondenseurs dits « secs » ou « adiabatiques » vers l'environnement extérieur et, le cas échéant de maîtriser une éventuelle fuite, notamment lorsqu'une fuite est présente au niveau des collecteurs d'entrée et de sortie du fluide frigorigène.There is a need to avoid any leakage of refrigerant in the so-called "dry" or "adiabatic" air condensers towards the external environment and, if necessary, to control any leakage, in particular when a leak is present at the level of the collectors refrigerant inlet and outlet.

La présente invention a donc pour but de palier les inconvénients ci-dessus et d'améliorer les aérocondenseurs dits « secs » ou « adiabatiques » afin de maîtriser les éventuelles fuites de fluide frigorigène, notamment au niveau des batteries d'échange thermique.The object of the present invention is therefore to overcome the above drawbacks and to improve so-called “dry” or “adiabatic” air condensers in order to control any leaks of refrigerant, in particular at the level of the heat exchange coils.

L'invention a pour objet une installation frigorifique dont au moins une partie est située dans un local technique et comprenant un circuit de refroidissement dans lequel circule un fluide frigorigène et comprenant un aérocondenseur un aérocondenseur sec ou adiabatique monté à l'extérieur du local technique et comprenant une enveloppe délimitée par au moins deux parois latérales, un fond, une paroi supérieure et au moins une paroi transversale s'étendant entre les parois latérales. L'aérocondenseur comprenant en outre au moins un échangeur de chaleur ou batterie d'échange thermique dans lequel circule un fluide frigorigène, au moins un collecteur d'entrée du fluide frigorigène et au moins un collecteur dudit fluide frigorigène reliés à l'échangeur de chaleur et s'étendant vers l'extérieur de l'aérocondenseur.The subject of the invention is a refrigeration installation, at least part of which is located in a technical room and comprising a cooling circuit in which a refrigerant fluid circulates and comprising an air condenser, a dry or adiabatic air condenser mounted outside the technical room and comprising an envelope delimited by at least two side walls, a bottom, a wall top and at least one transverse wall extending between the side walls. The air condenser further comprising at least one heat exchanger or heat exchange battery in which a refrigerant fluid circulates, at least one refrigerant inlet manifold and at least one manifold of said refrigerant fluid connected to the heat exchanger and extending outward from the air condenser.

L'aérocondenseur comprend un système de confinement de fuites de fluide frigorigène d'au moins un des collecteurs de fluide frigorigène pour confiner les fuites de fluide par rapport à l'extérieur de l'aérocondenseur et présentant la forme d'un carter ouvert configuré pour s'adapter à une ouverture du local technique.The air condenser includes a refrigerant leak containment system from at least one of the refrigerant manifolds to contain fluid leaks relative to the outside of the air condenser and having the form of an open casing configured to adapt to an opening of the technical room.

Le système de confinement de fuites est ainsi configuré pour confiner les fuites de fluide par rapport à l'environnement extérieur et forme avec la paroi latérale de l'enveloppe et avec le local technique un carter fermé.The leak containment system is thus configured to confine fluid leaks with respect to the external environment and forms with the side wall of the casing and with the technical room a closed casing.

Par carter fermé, on entend un carter ou enveloppe étanche à l'environnement extérieur.The term “closed casing” means a casing or casing that is sealed against the external environment.

Ainsi, on peut confiner les éventuelles fuites de fluide frigorigène au niveau des collecteurs d'entrée et de sortie de fluide réfrigérant circulant dans les tubes des batteries d'échange thermique d'un aérocondenseur sec ou adiabatique.Thus, it is possible to confine any leaks of refrigerant at the level of the inlet and outlet collectors of the refrigerant fluid circulating in the tubes of the heat exchange batteries of a dry or adiabatic air condenser.

L'échangeur de chaleur est, par exemple, délimité par deux côtés latéraux et deux faces opposées.The heat exchanger is, for example, delimited by two lateral sides and two opposite faces.

Par exemple, l'aérocondenseur comprend une enveloppe délimitée par des parois latérales, à savoir deux parois de côtés, une paroi avant transversale et une paroi arrière transversale s'étendant entre les parois de côtés. L'enveloppe peut également comprendre une paroi supérieure et un fond.For example, the air condenser comprises an envelope delimited by side walls, namely two side walls, a transverse front wall and a transverse rear wall extending between the side walls. The envelope may also include a top wall and a bottom.

L'échangeur de chaleur est, par exemple monté dans l'enveloppe.The heat exchanger is, for example, mounted in the casing.

En variante, au moins un côté latéral externe la batterie d'échange thermique forme une paroi latérale de côté de l'enveloppe de l'aérocondenseur.As a variant, at least one external lateral side of the heat exchange battery forms a lateral side wall of the casing of the air condenser.

La paroi transversale, par exemple, avant, de l'enveloppe de l'aérocondenseur peut être formée par une des faces, par exemple, avant de l'échangeur de chaleur.The transverse wall, for example front, of the casing of the air condenser can be formed by one of the faces, for example front of the heat exchanger.

En variante, on pourrait prévoir une paroi transversale, par exemple avant, de l'enveloppe distincte des faces de l'échangeur de chaleur.As a variant, one could provide a transverse wall, for example front, of the casing separate from the faces of the heat exchanger.

Par exemple, le système de confinement des fuites comprend au moins un carter de préférence ouvert monté sur la paroi transversale de l'aérocondenseur. En variante, le système de confinement des fuites présente la forme d'un carter fermé.For example, the leak containment system comprises at least one casing, preferably open, mounted on the transverse wall of the air condenser. Alternatively, the leak containment system has the form of a closed housing.

Selon un mode de réalisation, le système de confinement des fuites comprend au moins deux parois latérales s'étendant respectivement depuis une paroi latérale de l'enveloppe et une paroi supérieure s'étendant entre les parois latérales, lesdites parois entourant au moins partiellement les collecteurs de fluide frigorigène.According to one embodiment, the leak containment system comprises at least two side walls extending respectively from a side wall of the casing and an upper wall extending between the side walls, said walls at least partially surrounding the collectors of refrigerant.

Le système de confinement peut comprendre une paroi inférieure s'étendant entre les paroi latérales et parallèle ou non avec la paroi supérieure.The containment system may include a bottom wall extending between the side walls and parallel or not with the top wall.

Par exemple, les parois latérales s'étendent verticalement et sont parallèles entre elles.For example, the side walls extend vertically and are parallel to each other.

En variante, on pourrait prévoir des parois latérales obliques dont une extrémité d'une paroi latérale s'étend vers une extrémité de l'autre paroi latérale.As a variant, oblique side walls could be provided, one end of one side wall of which extends towards one end of the other side wall.

Par exemple, la paroi supérieure s'étend transversalement entre une extrémité des parois latérales.For example, the top wall extends transversely between one end of the side walls.

En variante, la paroi supérieure peut s'étendre transversalement entre les parois latérales à un autre endroit.Alternatively, the top wall may extend transversely between the side walls at another location.

On pourrait également prévoir une paroi supérieure s'étendant selon une direction oblique par rapport aux parois latérales.One could also provide an upper wall extending in an oblique direction with respect to the side walls.

Les parois latérales sont, par exemple, de hauteurs identiques.The side walls are, for example, of identical heights.

En variante, on pourrait prévoir qu'une des parois latérales soit de hauteur plus petite que l'autre.As a variant, provision could be made for one of the side walls to be of a smaller height than the other.

Selon un mode de réalisation, chacune des parois latérales et supérieure comprend au moins un joint d'étanchéité fixé sur la circonférence du système de confinement des fuites, par exemple la circonférence en contact avec le local technique et/ou avec l'échangeur de chaleur, afin d'étanchéifier le volume interne délimité par ledit carter ouvert et le local technique.According to one embodiment, each of the side and upper walls comprises at least one seal fixed to the circumference of the leak containment system, for example the circumference in contact with the technical room and/or with the heat exchanger, in order to seal the internal volume delimited by said open casing and the technical room.

Par exemple, au moins une paroi latérale de l'échangeur de chaleur forme une paroi latérale de l'aérocondenseur.For example, at least one side wall of the heat exchanger forms a side wall of the air condenser.

Dans ce cas, les parois latérales du système de confinement s'étendent à partir de la paroi latérale de l'échangeur de chaleur formant une paroi latérale de l'aérocondenseur.In this case, the side walls of the containment system extend from the side wall of the heat exchanger forming a side wall of the air condenser.

Selon un mode de réalisation, l'aérocondenseur comprend au moins deux échangeurs de chaleur reliés chacun à un collecteur d'entrée du fluide frigorigène et à un collecteur de sortie de fluide frigorigène.According to one embodiment, the air condenser comprises at least two heat exchangers each connected to a refrigerant inlet manifold and to a refrigerant outlet manifold.

Avantageusement, le système de confinement des fuites présente la forme d'au moins deux carters ouverts ou manchettes montés la paroi transversale de l'aérocondenseur, chacun des carters englobant au moins en partie un des collecteurs de fluide frigorigène.Advantageously, the leak containment system has the form of at least two open casings or sleeves mounted on the transverse wall of the air-cooled condenser, each of the casings including at least partly one of the refrigerant fluid manifolds.

Chacun des carters comprenant chacun au moins deux parois latérales et une paroi supérieure, voire une paroi inférieure.Each of the casings each comprising at least two side walls and an upper wall, or even a lower wall.

Dans le cas où les faces avant des échangeurs de chaleur forment la paroi transversale de l'enveloppe de l'aérocondenseur, chacun des carter s'étend respectivement à partir d'une face avant des échangeurs de chaleur.In the case where the front faces of the heat exchangers form the transverse wall of the casing of the air condenser, each of the casings extends respectively from a front face of the heat exchangers.

Chacun des carters englobe au moins en partie ladite face avant desdits échangeurs de chaleur.Each of the casings at least partially encompasses said front face of said heat exchangers.

Aérocondenseur pourrait également comprendre un système d'humidification d'air en amont de l'échangeur de chaleur dans le sens de circulation du flux d'air.Aerocondenser could also comprise an air humidification system upstream of the heat exchanger in the direction of circulation of the air flow.

Selon un second aspect, l'invention concerne une installation frigorifique dont au moins une partie est située dans un local technique dans lequel circule un fluide frigorigène et comprenant un aérocondenseur tel que décrit précédemment monté à l'extérieur du local technique, ledit système de confinement des fuites étant configuré pour s'adapter à une ouverture du local technique.According to a second aspect, the invention relates to a refrigeration installation, at least part of which is located in a technical room in which a refrigerant fluid circulates and comprising an air condenser as described above mounted outside the technical room, said containment system leaks being configured to adapt to an opening of the technical room.

Avantageusement, le local technique comporte au moins un capteur de détection des fuites de fluide frigorigène.Advantageously, the technical room comprises at least one refrigerant leak detection sensor.

La présente invention sera mieux comprise à l'étude de la description détaillée de modes de réalisation, pris à titre d'exemples nullement limitatifs et illustrés par les dessins annexés, sur lesquels :

  • [Fig 1]
  • [Fig 2] représentent, très schématiquement, respectivement un aérocondenseur sec et un aérocondenseur adiabatique ;
  • [Fig 3] est une vue en perspective d'un aérocondenseur sec ou adiabatique selon l'invention ;
  • [Fig 4]
  • [Fig 5] représentent très schématiquement respectivement la face avant et la face arrière d'une des batteries de l'aérocondenseur de la figure 3, le système de confinement n'ayant pas été dessiné pour ne pas alourdir les dessins ; et
  • [Fig 6] illustre une vue de côté d'une des batteries de l'aérocondenseur de la figure 3.
The present invention will be better understood on studying the detailed description of embodiments, taken by way of non-limiting examples and illustrated by the appended drawings, in which:
  • [ Fig 1 ]
  • [ Fig 2 ] represent, very schematically, respectively a dry air condenser and an adiabatic air condenser;
  • [ Fig.3 ] is a perspective view of a dry or adiabatic air condenser according to the invention;
  • [ Fig 4 ]
  • [ Fig.5 ] represent very schematically respectively the front face and the rear face of one of the batteries of the air condenser of the picture 3 , the containment system not having been drawn so as not to make the drawings heavier; and
  • [ Fig 6 ] illustrates a side view of one of the batteries of the air condenser of the picture 3 .

Sur la figure 3 est représenté un aérocondenseur référencé 10 dans son ensemble dans une position supposée verticale.On the picture 3 an air condenser referenced 10 as a whole is shown in a supposedly vertical position.

L'aérocondenseur 10 comprend une enveloppe 12 comprenant quatre parois latérales ici verticales, à savoir deux parois de côtés 12a, une paroi avant transversale 12b et une paroi arrière transversale 12c. L'enveloppe 12 comprend en outre une paroi supérieure 12d et un plancher ou paroi inférieure formant un fond 12e. L'ensemble des parois 12a, 12b, 12c, 12d, 12e, sont illustrées ici en pointillés afin de voir pas transparence à l'intérieur, et délimitent une enceinte interne. L'aérocondenseur 10 comprend en outre deux batteries d'échange thermique 14 ou échangeurs de chaleur disposées dans l'enceinte interne de l'enveloppe 12 et comprenant chacune une pluralité de tubes 17a, 17b, 17c et d'ailettes (non représentées) ou des microcanaux. Un fluide frigorigène circule dans les tubes de chacune des batteries d'échange thermique 14.The air condenser 10 comprises a casing 12 comprising four side walls here vertical, namely two side walls 12a, a transverse front wall 12b and a transverse rear wall 12c. The casing 12 further comprises an upper wall 12d and a floor or lower wall forming a bottom 12e. All of the walls 12a, 12b, 12c, 12d, 12e are illustrated here in dotted lines in order to see no transparency inside, and delimit an internal enclosure. The air condenser 10 further comprises two heat exchange batteries 14 or heat exchangers arranged in the internal enclosure of the casing 12 and each comprising a plurality of tubes 17a, 17b, 17c and fins (not shown) or microchannels. A refrigerant circulates in the tubes of each of the heat exchange batteries 14.

Tel qu'illustré en détails sur les figures 4 à 6, chaque batterie d'échange thermique 14 comprend une face avant 14a et une face arrière 14b, opposée à la face avant, et deux côtés latéraux, un côté latéral externe 14c, du côté extérieur, et un côté latéral interne 14d, opposé au côté latéral externe 14c.As illustrated in detail on the figures 4 to 6 , each heat exchange battery 14 comprises a front face 14a and a rear face 14b, opposite the front face, and two lateral sides, an outer lateral side 14c, on the outer side, and an inner lateral side 14d, opposite the outer lateral side 14c.

Chaque batterie 14 comprend un collecteur 15a d'entrée du fluide frigorigène et à un collecteur 15b de sortie du fluide frigorigène.Each battery 14 comprises a refrigerant inlet manifold 15a and a refrigerant outlet manifold 15b.

Tel qu'illustré, le collecteur 15a d'entrée du fluide frigorigène est relié à des premiers tubes 17a de la batterie du côté de la face avant 14a de la batterie et le collecteur 15b de sortie du fluide frigorigène est relié à des deuxièmes tubes 17b de la batterie du côté de la face avant 14a de la batterie. En variante, on pourrait prévoir que le collecteur 15b de sortie soit relié à des tubes de la batterie du côté de la face arrière 14b de la batterie.As shown, the refrigerant inlet manifold 15a is connected to first tubes 17a of the battery on the side of the front face 14a of the battery and the refrigerant outlet manifold 15b is connected to second tubes 17b of the battery on the side of the front face 14a of the battery. As a variant, provision could be made for the outlet collector 15b to be connected to the tubes of the battery on the side of the rear face 14b of the battery.

Les tubes 17a, 17b de chaque batterie 14 sont reliés par soudage respectivement au collecteur 15a d'entrée du fluide frigorigène et au collecteur 15b de sortie du fluide frigorigène. Les tubes 17a, 17b sont réalisés par des tronçons de tuyaux soudés entre eux et collecteur associé par de nombreuses soudures.The tubes 17a, 17b of each battery 14 are connected by welding respectively to the refrigerant inlet manifold 15a and to the refrigerant outlet manifold 15b. The tubes 17a, 17b are produced by sections of pipes welded together and associated collector by numerous welds.

Les collecteurs 15a d'entrée du fluide frigorigène des deux batteries 14 sont ici reliés par un conduit 19a d'amenée du fluide frigorigène et les collecteurs 15b de sortie du fluide frigorigène des deux batteries 14 sont ici reliés par un conduit 19b de sortie du fluide frigorigène. En variante, on pourrait prévoir d'alimenter en fluide frigorigène et de récupérer le fluide frigorigène les batteries de manière séparée.The refrigerant inlet manifolds 15a of the two batteries 14 are here connected by a refrigerant supply conduit 19a and the refrigerant fluid outlet manifolds 15b of the two batteries 14 are here connected by a fluid outlet conduit 19b refrigerant. As a variant, provision could be made for supplying refrigerant and recovering the refrigerant to the batteries separately.

Tel qu'illustré, et de manière nullement limitative, la face arrière 14b desdites batteries 14 comprend également une pluralité 17c de tubes comportant des coudes à 90° soudés pour le circuitage des batteries 14.As illustrated, and in no way limiting, the rear face 14b of said batteries 14 also comprises a plurality 17c of tubes comprising welded 90° elbows for the circuiting of the batteries 14.

L'aérocondenseur 10 comprend une pluralité de ventilateurs 16 montés sur la paroi supérieure 12d de l'enveloppe 12.The air condenser 10 comprises a plurality of fans 16 mounted on the upper wall 12d of the casing 12.

Tel qu'illustré sur la figure 4, l'aérocondenseur 10 est ici un aérocondenseur adiabatique comprenant un dispositif d'humidification de l'air comprenant deux médias ou organes d'absorption 18 configurés pour humidifier le flux d'air entrant dans les batteries 14, chacun des médias 18 est associé à une batterie 14. Chaque média 18 est disposé en amont d'une batterie 14 dans le sens de circulation du flux d'air mis en mouvement par les ventilateurs 16. Le média est généralement réalisé en matériau absorbant. Le dispositif d'humidification de l'air comprend en outre un système (non représenté) d'arrosage par un fluide d'humidification, par exemple de l'eau, disposé au-dessus de chacun des médias 18 et configuré pour humidifier ledit média 18 correspondant et un système 18a de récupération ou de collecte du fluide d'humidification après avoir traversé le média 18.As shown on the figure 4 , the air condenser 10 is here an adiabatic air condenser comprising an air humidification device comprising two absorption media or members 18 configured to humidify the flow of air entering the batteries 14, each of the media 18 is associated with a battery 14. Each media 18 is arranged upstream of a battery 14 in the direction of circulation of the air flow set in motion by the fans 16. The media is generally made of absorbent material. The air humidification device further comprises a system (not shown) for spraying with a humidification fluid, for example water, arranged above each of the media 18 and configured to humidify said media 18 corresponding and a system 18a for recovering or collecting the humidification fluid after having passed through the media 18.

En variante, on pourrait prévoir qu'une seule batterie d'échange thermique et un média d'humidification associé. On pourrait également prévoir un nombre de batteries d'échange thermique supérieur à trois.As a variant, one could provide only one heat exchange battery and an associated humidification medium. It would also be possible to provide a number of heat exchange batteries greater than three.

On pourrait prévoir d'humifier l'air entrant dans la batterie 14 par le système d'humidification dépourvu de média.Provision could be made to humidify the air entering the battery 14 by the humidification system devoid of media.

En variante, on pourrait prévoir que l'aérocondenseur 10 soit « sec », c'est-à-dire dépourvu de système d'humidification et ainsi de médias.As a variant, provision could be made for the air condenser 10 to be “dry”, that is to say devoid of a humidification system and thus of media.

Dans l'exemple illustré, les parois de côté latérales 12a de l'aérocondenseur sont distinctes des côtés latéraux externes 14c des batteries 14. En variante, on pourrait prévoir que le côté latéral externe 14c d'au moins une des batteries, voire des deux batteries forment les parois de côté latérales 12a de l'enveloppe 12.In the example illustrated, the lateral side walls 12a of the air condenser are distinct from the external lateral sides 14c of the batteries 14. Alternatively, provision could be made for the external lateral side 14c of at least one of the batteries, or even of the two batteries form the lateral side walls 12a of the casing 12.

Dans le cas où le côté latéral externe 14c des batteries forme les parois de côté latérales 12a de l'aérocondenseur 10, l'air extérieur aspiré par les ventilateurs 16 circule directement à travers les batteries d'échange thermique 14 à travers lesdits côtés latéraux 14c.In the case where the external lateral side 14c of the batteries forms the lateral side walls 12a of the air condenser 10, the external air sucked in by the fans 16 circulates directly through the heat exchange batteries 14 through said lateral sides 14c .

On pourrait prévoir de disposer les batteries 14 de manière verticale ou de manière oblique pour former un V, voire de manière horizontale.Provision could be made to arrange the batteries 14 vertically or obliquely to form a V, or even horizontally.

Dans le cas où les côtés latéraux externe 14c des batteries forment les parois latérales 12a de l'enveloppe 12, le dispositif d'humidification de l'air est disposé à l'extérieur de l'enveloppe 12.In the case where the outer lateral sides 14c of the batteries form the side walls 12a of the casing 12, the air humidification device is arranged outside the casing 12.

Tel qu'illustré, la paroi avant de l'enveloppe de l'aérocondenseur est formée par les faces avant 14a des batteries 14. En variante, on pourrait prévoir une paroi avant de l'enveloppe 12 distincte des faces avant 14a des batteries. Dans ce cas, les collecteurs d'entrée et de sortie de fluide frigorigène s'étendent à partir de la paroi avant de l'enveloppe vers l'extérieur.As illustrated, the front wall of the casing of the air condenser is formed by the front faces 14a of the batteries 14. In alternatively, one could provide a front wall of the casing 12 separate from the front faces 14a of the batteries. In this case, the refrigerant inlet and outlet manifolds extend from the front wall of the envelope outwards.

L'aérocondenseur 10 comprend un système 40 de confinement des fuites de fluide frigorigène s'échappant des collecteurs 15a, 15b d'entrée et de sortie de fluide frigorigène.The air condenser 10 comprises a system 40 for containing refrigerant leaks escaping from the refrigerant inlet and outlet manifolds 15a, 15b.

Le système 40 de confinement des fuites présente la forme d'un carter ouvert ou manchette monté du côté de la face avant 14a des batteries 14. Dans l'exemple illustré, la manchette 40 est montée directement sur la face avant 14a des batteries. Dans le cas où l'enveloppe 12 comprend une paroi avant distincte des faces avant des batteries, la manchette 40 est montée directement sur ladite paroi avant.The leak containment system 40 has the form of an open casing or sleeve mounted on the side of the front face 14a of the batteries 14. In the example illustrated, the sleeve 40 is mounted directly on the front face 14a of the batteries. In the case where the envelope 12 comprises a front wall separate from the front faces of the batteries, the sleeve 40 is mounted directly on said front wall.

La manchette 40 comprend deux parois latérales 40a, 40b s'étendant respectivement depuis une paroi latérale 12a de l'enveloppe 12 et une paroi supérieure 40c s'étendant entre les parois latérales 40a, 40b.The sleeve 40 comprises two side walls 40a, 40b extending respectively from a side wall 12a of the casing 12 and an upper wall 40c extending between the side walls 40a, 40b.

Ici, la paroi supérieure 40c est décalée en hauteur par rapport à la paroi supérieure 12d de l'enveloppe 12. On pourrait prévoir que la paroi supérieure 40c s'étende depuis la paroi supérieure 12d de ladite enveloppe 12. Dans le cas où le côté latéral externe 14c des batteries 14 forme les parois latérales de l'aérocondenseur 10, les parois latérales 40a, 40b s'étendent à partir desdits côtés latéraux externes 14c des batteries 14.Here, the top wall 40c is offset in height relative to the top wall 12d of the casing 12. It could be provided that the top wall 40c extends from the top wall 12d of said casing 12. In the case where the side external side 14c of the batteries 14 forms the side walls of the air condenser 10, the side walls 40a, 40b extend from said external side sides 14c of the batteries 14.

Les parois 40a, 40b, 40c du système 40 de confinement sont destinées à s'adapter à un local technique à l'intérieur duquel est disposée en partie l'installation frigorifique et comprenant notamment le reste du circuit frigorifique.The walls 40a, 40b, 40c of the containment system 40 are intended to be adapted to a technical room inside which the refrigeration installation is arranged in part and comprising in particular the rest of the refrigeration circuit.

Par exemple, le système 40 de confinement est configuré pour s'adapter à une ouverture (non représentée) du local technique pour venir au moins en partie s'insérer dans ladite ouverture.For example, the containment system 40 is configured to adapt to an opening (not shown) of the technical room in order to be inserted at least partially into said opening.

En effet, l'aérocondenseur utilisant l'air extérieur pour la condensation du fluide frigorigène, il est situé à l'extérieur du local technique.Indeed, since the air condenser uses outside air to condense the refrigerant, it is located outside the technical room.

Tel qu'illustré, les parois latérales 40a, 40b s'étendent verticalement et sont parallèles entre elles. En variante, on pourrait prévoir des parois latérales obliques dont une extrémité d'une paroi latérale s'étend vers une extrémité de l'autre paroi latérale.As shown, the side walls 40a, 40b extend vertically and are parallel to each other. As a variant, oblique side walls could be provided, one end of one side wall of which extends towards one end of the other side wall.

Tel qu'illustré, la paroi supérieure 40c s'étend transversalement entre une extrémité des parois latérales 40a, 40b. En variante, la paroi supérieure 40c peut s'étend transversalement entre les parois latérales 40a, 40b à un autre endroit.As shown, top wall 40c extends transversely between one end of side walls 40a, 40b. Alternatively, top wall 40c may extend transversely between side walls 40a, 40b at another location.

On pourrait également prévoir une paroi supérieure s'étendant selon une direction oblique par rapport aux parois latérales.One could also provide an upper wall extending in an oblique direction with respect to the side walls.

Les parois latérales 40a, 40b sont ici de dimensions identiques. En variante, on pourrait prévoir qu'une des parois latérales soit de hauteur plus petite que l'autre.The side walls 40a, 40b are here of identical dimensions. As a variant, provision could be made for one of the side walls to be of a smaller height than the other.

Chacune des parois latérales et supérieure peut comprendre un joint d'étanchéité sur la circonférence de la manchette 40 en contact avec le local technique, afin d'étanchéifier le volume interne délimité par ladite manchette 40, le local technique et le sol.Each of the side and top walls may include a seal on the circumference of the sleeve 40 in contact with the technical room, in order to seal the internal volume delimited by said sleeve 40, the technical room and the ground.

La manchette 40 pourrait également comprendre une paroi inférieure s'étendant transversalement entre les parois latérales 40a, 40b, notamment dans le cas où le sol n'est pas droit.The sleeve 40 could also include a lower wall extending transversely between the side walls 40a, 40b, in particular in the case where the ground is not straight.

On pourrait également prévoir que le système 40 de confinement des fuites présente la forme de deux carters ouverts ou manchettes comprenant chacun deux parois latérales et une paroi supérieure, voire une paroi inférieure. Chacun des carters englobant la face avant 14a de chaque batterie 14.Provision could also be made for the leak containment system 40 to have the form of two open casings or sleeves each comprising two side walls and an upper wall, or even a lower wall. Each of the casings encompassing the front face 14a of each battery 14.

Le local technique comporte un ou plusieurs capteurs (non représentés) configurés pour détecter les fuites de fluide frigorigène.The technical room includes one or more sensors (not shown) configured to detect refrigerant leaks.

Grâce à l'invention, il est possible de confiner les éventuelles fuites de fluide frigorigène au niveau des collecteurs d'entrée et de sortie de fluide réfrigérant circulant dans les tubes des batteries d'échange thermique d'un aérocondenseur sec ou adiabatique.Thanks to the invention, it is possible to confine any leaks of refrigerant at the level of the inlet and outlet collectors of the refrigerant fluid circulating in the tubes of the heat exchange batteries of a dry or adiabatic air condenser.

Claims (10)

Installation frigorifique dont au moins une partie est située dans un local technique et comprenant un circuit de refroidissement dans lequel circule un fluide frigorigène et comprenant un aérocondenseur monté à l'extérieur du local technique et comprenant une enveloppe (12) délimitée par au moins deux parois latérales (12a), un fond (12e), une paroi supérieure (12d), et au moins une paroi transversale (12b) s'étendant entre les parois latérales (12a), l'aérocondenseur comprenant en outre au moins un échangeur de chaleur (14) dans lequel circule un fluide frigorigène, au moins un collecteur (15a) d'entrée du fluide frigorigène et au moins un collecteur (15b) de sortie de fluide frigorigène reliés à l'échangeur de chaleur s'étendant vers l'extérieur de l'aérocondenseur, caractérisé en ce qu'il comprend un système (40) de confinement de fuites de fluide frigorigène d'au moins un des collecteurs (15a, 15b) de fluide frigorigène pour confiner les fuites de fluide par rapport à l'extérieur de l'aérocondenseur et présentant la forme d'un carter ouvert configuré pour s'adapter à une ouverture du local technique.Refrigeration installation, at least part of which is located in a technical room and comprising a cooling circuit in which a refrigerant fluid circulates and comprising an air condenser mounted outside the technical room and comprising an envelope (12) delimited by at least two walls side walls (12a), a bottom (12e), an upper wall (12d), and at least one transverse wall (12b) extending between the side walls (12a), the air condenser further comprising at least one heat exchanger (14) in which a refrigerant circulates, at least one refrigerant inlet manifold (15a) and at least one refrigerant outlet manifold (15b) connected to the heat exchanger extending outwards of the air condenser, characterized in that it comprises a system (40) for containing refrigerant leaks from at least one of the refrigerant manifolds (15a, 15b) to confine the fluid leaks with respect to the outside of the air condenser and having the shape of an open casing configured to adapt to an opening of the technical room. Installation selon la revendication 1, dans lequel le système (40) de confinement des fuites comprend au moins deux parois latérales (40a, 40b) s'étendant respectivement depuis une paroi latérale (12a) de l'enveloppe (12) et au moins une paroi supérieure (40c) s'étendant entre les parois latérales (40a, 40b), lesdites parois (40a, 40b, 40c) entourant au moins partiellement les collecteurs (15a, 15b) de fluide frigorigène.Installation according to claim 1, in which the leak containment system (40) comprises at least two side walls (40a, 40b) extending respectively from a side wall (12a) of the casing (12) and at least one top wall (40c) extending between the side walls (40a, 40b), said walls (40a, 40b, 40c) at least partially surrounding the refrigerant manifolds (15a, 15b). Installation selon la revendication 2, dans lequel les parois latérales (40a, 40b) s'étendent sensiblement verticalement et sont parallèles entre elles.Installation according to Claim 2, in which the side walls (40a, 40b) extend substantially vertically and are parallel to each other. Installation selon la revendication 2 ou 3, dans lequel la paroi supérieure (40c) s'étend transversalement entre une extrémité des parois latérales (40a, 40b).Installation according to claim 2 or 3, wherein the top wall (40c) extends transversely between one end of the side walls (40a, 40b). Installation selon l'une quelconque des revendications 2 à 4, dans lequel chacune des parois latérales et supérieure comprend au moins un joint d'étanchéité fixé sur la circonférence du système (40) de confinement des fuites.Installation according to any one of Claims 2 to 4, in which each of the side and upper walls comprises at least one seal attached to the circumference of the leak containment system (40). Installation selon l'une quelconque des revendications précédentes, dans lequel au moins une paroi latérale de l'échangeur de chaleur (14) forme une paroi latérale (12a) de l'aérocondenseur (10).Installation according to any one of the preceding claims, in which at least one side wall of the heat exchanger (14) forms a side wall (12a) of the air condenser (10). Installation selon la revendication 6 et une des revendications 2 à 5, dans lequel, les parois latérales (40a, 40b) du système (40) de confinement s'étendent à partir de la paroi latérale de l'échangeur de chaleur (14) formant une paroi latérale (12a) de l'aérocondenseur (10)Installation according to Claim 6 and one of Claims 2 to 5, in which the side walls (40a, 40b) of the confinement system (40) extend from the side wall of the heat exchanger (14) forming a side wall (12a) of the air condenser (10) Installation selon l'une quelconque des revendications précédentes, comprenant au moins deux échangeurs de chaleur (14) reliés chacun à un collecteur (15a) d'entrée du fluide frigorigène et à un collecteur (15b) de sortie de fluide frigorigène.Installation according to any one of the preceding claims, comprising at least two heat exchangers (14) each connected to a refrigerant inlet manifold (15a) and to a refrigerant outlet manifold (15b). Installation (10) selon la revendication 8, dans lequel le système (40) de confinement des fuites présente la forme de deux carters ouverts montés sur la paroi transversale de l'aérocondenseur, chacun des carters englobant au moins en partie un des collecteurs (15a, 15b) de fluide frigorigène.Installation (10) according to claim 8, in which the leak containment system (40) has the form of two open casings mounted on the transverse wall of the air condenser, each of the casings including at least partly one of the collectors (15a , 15b) of refrigerant. Installation selon l'une quelconque des revendications précédentes, dans lequel le local technique comporte au moins un capteur de détection des fuites de fluide frigorigène.Installation according to any one of the preceding claims, in which the technical room comprises at least one sensor for detecting refrigerant leaks.
EP21184645.6A 2020-07-24 2021-07-09 Cooling installation with an evaporative condenser comprising a system for containment of coolant leaks Active EP3943857B1 (en)

Applications Claiming Priority (1)

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FR2007820A FR3112844B1 (en) 2020-07-24 2020-07-24 Dry or adiabatic air-cooled condenser including a refrigerant leak containment system

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EP3943857A1 true EP3943857A1 (en) 2022-01-26
EP3943857B1 EP3943857B1 (en) 2022-12-14

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608049A1 (en) * 1996-03-02 1997-09-04 Behr Gmbh & Co Pipe for motor vehicle air conditioning heat transfer
US20140138050A1 (en) * 2012-04-25 2014-05-22 Evapco, Inc. Double-Walled Dry Heat Exchanger Coil With Single-Walled Return Bends
FR3073040A1 (en) * 2017-11-02 2019-05-03 Bernier Developpement SAFETY DEVICES FOR AERAULIC COLD INSTALLATIONS AND HEAT PUMPS USING TOXIC OR FLAMMABLE REFRIGERANT FLUIDS
WO2020009776A1 (en) * 2018-07-02 2020-01-09 Carrier Corporation Isolated evaporator piping pod
US20200072478A1 (en) * 2017-07-05 2020-03-05 Hitachi-Johnson Controls Air Conditioning, Inc. Air-conditioner outdoor heat exchanger and air-conditioner including the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608049A1 (en) * 1996-03-02 1997-09-04 Behr Gmbh & Co Pipe for motor vehicle air conditioning heat transfer
US20140138050A1 (en) * 2012-04-25 2014-05-22 Evapco, Inc. Double-Walled Dry Heat Exchanger Coil With Single-Walled Return Bends
US20200072478A1 (en) * 2017-07-05 2020-03-05 Hitachi-Johnson Controls Air Conditioning, Inc. Air-conditioner outdoor heat exchanger and air-conditioner including the same
FR3073040A1 (en) * 2017-11-02 2019-05-03 Bernier Developpement SAFETY DEVICES FOR AERAULIC COLD INSTALLATIONS AND HEAT PUMPS USING TOXIC OR FLAMMABLE REFRIGERANT FLUIDS
WO2020009776A1 (en) * 2018-07-02 2020-01-09 Carrier Corporation Isolated evaporator piping pod

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FR3112844A1 (en) 2022-01-28
EP3943857B1 (en) 2022-12-14
FR3112844B1 (en) 2022-08-19

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