EP3537089A1 - Appareil de refroidissement - Google Patents

Appareil de refroidissement Download PDF

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Publication number
EP3537089A1
EP3537089A1 EP19160861.1A EP19160861A EP3537089A1 EP 3537089 A1 EP3537089 A1 EP 3537089A1 EP 19160861 A EP19160861 A EP 19160861A EP 3537089 A1 EP3537089 A1 EP 3537089A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
micro
conduit
cooling apparatus
circular
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP19160861.1A
Other languages
German (de)
English (en)
Other versions
EP3537089B8 (fr
EP3537089B1 (fr
Inventor
Paolo Ferraris
Massimo DE MARCO
Fabio Belloni
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Althermo Srl
Original Assignee
Althermo Srl
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 Althermo Srl filed Critical Althermo Srl
Priority to PL19160861T priority Critical patent/PL3537089T3/pl
Publication of EP3537089A1 publication Critical patent/EP3537089A1/fr
Application granted granted Critical
Publication of EP3537089B1 publication Critical patent/EP3537089B1/fr
Publication of EP3537089B8 publication Critical patent/EP3537089B8/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • 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
    • F28D1/04—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 tubular conduits
    • F28D1/047—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 tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • 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
    • F28D3/00—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 flows in a continuous film, or trickles freely, over the conduits
    • 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
    • F28D3/00—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 flows in a continuous film, or trickles freely, over the conduits
    • F28D3/02—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 flows in a continuous film, or trickles freely, over the conduits with tubular conduits
    • 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
    • F28D3/00—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 flows in a continuous film, or trickles freely, over the conduits
    • F28D3/04—Distributing arrangements
    • 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
    • F28D5/00—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, using the cooling effect of natural or forced evaporation
    • 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
    • F28D5/00—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, using the cooling effect of natural or forced evaporation
    • F28D5/02—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, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
    • 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
    • F28F2260/00—Heat exchangers or heat exchange elements having special size, e.g. microstructures
    • F28F2260/02—Heat exchangers or heat exchange elements having special size, e.g. microstructures having microchannels

Definitions

  • the present invention relates to a cooling apparatus which comprises a micro-channel heat exchanger.
  • the Applicant has understood that the provision of an airflow guide element with a generally frusto-conical shape within the volume allows a substantially homogeneous distribution of air over the entire surface of the heat exchanger, from the bottom towards the top. This allows an overall greater heat capacity of the heat exchanger and therefore of the cooling apparatus.
  • a cooling apparatus which comprises:
  • a concave parabolic profile of the side surface of the frusto-conical guide body can further improve the flow of air which enters or exits the lower part of the airflow volume and which is subject to a considerable reduction of flow speed, as it is farthest from the point of aspiration or thrust.
  • the fan is arranged on the upper air passage opening, so as to close this opening.
  • the space enclosed by the support structure, in particular by the resting surface, the circularly curved heat exchanger and by the fan is substantially cylindrical in shape and will be indicated hereinafter as airflow volume.
  • the frusto-conical shaped guide body has a circular upper surface having an outer diameter.
  • the upper surface is perpendicular to the central axis.
  • the fan is an axial fan which comprises a plurality of blades and a motor housed in a motor body arranged centrally in the upper air passage opening, the motor body having a (maximum) width in a direction parallel to the plane which comprises the upper surface of the guide body.
  • the generally frusto-conical guide body is arranged so that its upper surface is arranged below and at the motor body, the upper surface having an outer diameter greater than or equal to the width of the motor body.
  • the cooling apparatus comprises a nebulizer device for the evaporative cooling of the surface of the heat exchanger.
  • the guide body is hollow and has an upper opening concentric to the central axis, the nebulizer device comprising:
  • the guide element further comprises a tray for collecting possible excess nebulized water.
  • the collection tray is arranged on the support surface of the support structure, in a radially external position with respect to the frusto-conical shaped body and comprises a raised edge along its perimeter.
  • the collection tray surrounds the guide body and is in contact with the lower end of the side wall of the guide body.
  • the heat exchanger is mounted onto the collection tray, along an inner line which is circular and concentric with respect to the edge of the tray.
  • the collection tray of annular shape, has a greater outer diameter of the surface diameter defined by the outer circular line of curvature of the heat exchanger.
  • the guide body is hollow
  • the collection tray has an annular shape and the guide body and the collection tray are constructed in one piece.
  • the heat exchanger 15 is circularly curved, along a circular perimeter line, so as to delimit a circular surface on the resting surface 12 and to define a circular upper opening 27 for the passage of air ( figure 2 ).
  • the micro-channel heat exchanger 15 comprises: a first manifold 20, arranged vertically with respect to the resting surface 12, for receiving an inlet fluid, and a second manifold 21, arranged in parallel with the first manifold 20 (and vertically with respect to the resting surface), for draining the fluid, a plurality of micro-channel tubes arranged horizontally and in fluid communication both with the first and with the second manifold.
  • the micro-channel tubes are vertically distanced from each other to have a plurality of transverse air passages arranged between adjacent micro-channel tubes.
  • the micro-channel tubes and the transverse air passages are not clearly visible in figures 1-3 and 5 .
  • the plurality of micro-channel tubes with the interposed air passages define a heat exchange region 14 which extends horizontally between the first and second manifold.
  • the heat exchanger has a length L of maximum vertical extension (z axis) from the resting surface 12.
  • the heat exchange region 14 defines an inner heat exchange surface, which extends vertically around the circular surface.
  • the cooling apparatus 10 further comprises a fan 19 arranged on the upper air passage opening 27, so as to close this opening.
  • the space enclosed by the support structure 11, in particular by the resting surface 12, by the circularly curved heat exchanger 15 and by the fan 19 has a substantially cylindrical shape and is indicated in the present description with airflow volume, in which the air, which enters through the air passages between the micro-channel tubes, is sucked towards the fan.
  • a protection grid 49 is provided, arranged on the fan 19.
  • FIG 5 shows a partial section of the cooling apparatus 10 along a median transverse plane BB indicated in figure 1 .
  • the fan 19 is shown schematically, partly in section.
  • the fan 19 can be of the conventional type and comprises a plurality of blades 47 and a motor (not shown) for driving the blades, the motor being housed in a motor body 46.
  • the plurality of blades is connected to the motor body 46 which rotates about the axis of the impeller.
  • the motor body 46 is centrally located in the upper air passage opening 27.
  • the fan 19 is mounted on a spacer element 18 which comprises a substantially cylindrical-shaped frame 18a.
  • the spacer element 18 comprises a support grid for the motor body fixed to the frame 18a, the support grid, of conventional type, being configured to facilitate the conveying of the air towards the blades (support grid, inside the frame 18a, not shown in figure 5 for the sake of clarity).
  • the spacer element 18, in particular the frame 18a is mounted on the heat exchanger 15.
  • the frame 18a has a diameter substantially equal to the diameter of the upper air passage opening 27.
  • the spacer element 18, i.e. the frame 18a on which the fan 19 is mounted, has a height such as to circularly enclose the motor body 46 and the blades 47 and to ensure that these elements are arranged above the heat exchange region 14. In this way the motor body 46, which often extends below the blades, avoids being located in a portion of the airflow volume affected by the heat exchange.
  • the motor body 46 and more preferably also the blades 47 are positioned at a height greater than the length L of vertical extension (in the figures along the z axis) of the heat exchanger 15.
  • the airflow volume of substantially cylindrical shape is the space enclosed horizontally by the resting surface 12 and by the fan 19 and vertically by the circularly shaped heat exchanger 15 and by the frame 18a of the spacer element.
  • the fan 19 is an axial fan, with which the air is sucked and sent in the same direction.
  • the air flow is vertical, i.e. parallel to the impeller axis (i.e. z axis), and the air entering from the transverse air passages is conveyed to the outside by the fan through the air passage opening 27.
  • the Applicant has realized that the apparatus according to the present invention can operate effectively also in a mode in which the fan 19 is configured to push air into the airflow volume, the air being conveyed towards the outside through the transverse air passages between the micro-channel tubes.
  • the circular opening 27 is an opening for the outflow of air or the inflow of air.
  • the fan 19 can be set to push the air outside or inside the airflow volume, by setting the direction of rotation of the impeller and thus of the blades (setting the motor).
  • the first manifold 20 is adjacent to the second manifold 21 ( figure 2 ).
  • the first and second manifold are arranged at a distance from one another, preferably comprised between 2 cm and 10 cm, defining a longitudinal opening which extends in the length of the manifolds.
  • a covering element 13 is arranged above the first and second manifold 20, 21 extending along the length of the manifolds and covering the longitudinal opening ( figure 1 ).
  • the covering element 13 serves to close the longitudinal opening between the manifolds so as to circularly close the airflow volume and render the aspiration of the air towards the fan 19 more efficient.
  • the heat exchanger 15 and the fan 19 mounted on the spacer element 18 are attached to each other and to the support structure 11 by means of fixing elements 16, 17 (more clearly visible in figure 1 ).
  • fixing elements 16, 17 more clearly visible in figure 1 .
  • a plurality of tie-rods 16 fixes, e.g. by means of fixing bolts, the heat exchanger to the support structure 11 and a respective plurality of connection plates 17 fixes the heat exchanger 15 to the spacer element 18, in particular to the frame 18a, e.g. by means of fixing bolts.
  • connection plates 17 are plates for orthogonal-transverse connection, transversely connected to a lower flange of the frame 18a of the spacer element 18 and orthogonally to a respective tie-rod 16 for the fixing to the support structure 11.
  • the connection plates 17 can be equipped with a free vertical portion that comprises a through hole for hanging and transporting the cooling apparatus. It is understood that the present invention is not limited to a particular fixing configuration.
  • the construction of the micro-channel heat exchanger can be of a conventional type.
  • the heat exchanger has a parallel flow configuration.
  • Figure 6 schematically shows a typical construction of a parallel flow micro-channel heat exchanger.
  • Figure 6A is an enlarged portion of the insert C of figure 6 , which schematically shows the micro-channel structure.
  • the heat exchanger 15 comprises a plurality of micro-channel tubes 25, each tube 25 having two ends (not indicated) connected, respectively, to the first and to the second manifold 20, 21 so as to be in fluid communication with the first and second manifold 20, 21.
  • the maximum thickness of the heat exchanger along a direction perpendicular to the main extension is approximately 2 cm to 10 cm, and is often defined by the transverse section of the distribution manifolds of the circulating fluid.
  • the micro-channel tubes 25 are arranged horizontally substantially in parallel to each other.
  • the first and second manifolds 20, 21 are arranged in parallel with respect to each other and substantially perpendicular to the micro-channel tubes 25.
  • Each micro-channel tube comprises a plurality of micro-channels, within which the fluid flows.
  • the micro-channel tubes are flat, for example of a thickness of about 3 mm, and each comprising a plurality of micro-channels with a width transverse to the flow of from 1 mm to 6 mm.
  • the tubes can be welded to the manifolds by brazing or by casting.
  • the heat exchanger 15 comprises a plurality of tabs 26, which are arranged in the air passages between adjacent tubes 25 and in contact therewith.
  • each tab 26 extends in parallel to the micro-channel tubes, substantially covering the length of the micro-channel tubes.
  • the tabs are preferably welded between the micro-channel tubes by brazing.
  • the tabs 26 are Louver-type tabs.
  • the first manifold 20 has an inlet opening 22 for the inlet of a fluid and a first plurality of outlet openings (not visible) arranged along its length, at the first ends of the micro-channel tubes for putting the first manifold in fluid communication with the micro-channels of each tube of the plurality of tubes.
  • the fluid flows along the micro-channels along parallel flow paths.
  • the second manifold 21 has an outlet opening 23 for draining the fluid and a second plurality of inlet openings (not visible) respectively to the first plurality of outlet openings, arranged along its length, at the second ends of the micro-channel tubes.
  • the inlet opening 22 for the inlet of fluid and the outlet opening 23 for the outflow of fluid are arranged at one end of the respective manifold 20, 21.
  • the support structure 11 comprises a first and a second through opening 28a and 28b for the insertion of the lower end of the respective manifold 20, 21 which comprises the respective opening 22, 23.
  • the heat exchanger In the case of cooling a working fluid and in the air condensers for HVAC, the heat exchanger is typically with an open-loop flow. However, the present invention envisages that the heat exchanger can be a closed-loop flow.
  • the first manifold 20 is connected, via the inlet opening 22, with an inlet conduit for the inflow of fluid and the second manifold 21 is connected, via the outlet opening 23, with an outlet conduit for the outflow of fluid (inlet and outlet conduits not shown in the figures).
  • the micro-channel tubes 25, the tabs 26 and, more preferably, the manifolds 20 and 21 are made entirely of aluminium.
  • Micro-channel heat exchangers typically have a planar configuration, i.e. they have a main direction of extension arranged on a plane, as in the example of figure 6 .
  • the planar micro-channel heat exchanger is bent circularly, along a circumferential line so as to bend the plurality of micro-channel tubes, approaching the first manifold 20 to second manifold 21.
  • the circumferential bending line defines the perimeter of the circular surface of the generally cylindrical airflow volume.
  • the cooling apparatus 10 comprises an airflow guide element 40 arranged in the airflow volume and configured to guide the air, which enters or exits through the spaces (preferably tabbed) interposed between the micro-channel tubes, towards the fan or coming from the fan.
  • the airflow guide element has the general function of optimizing the outflow/inflow of outgoing/incoming air between the micro-channel tubes.
  • the guide element 40 comprises a guide body 40a of a generally truncated cone shape, preferably with a circular base.
  • the truncated cone body is arranged on the resting surface 12, substantially centrally with respect to the circular surface delimited by the heat exchanger, about a central axis A (along axis z).
  • the truncated cone guide body 40a has a lateral surface 40b of rotation having concave parabolic profile.
  • the concave parabolic profile is in relation with a transverse section in the yz plane perpendicular to the resting surface 12 and passing through the central axis A.
  • the concave parabolic profile has a progressive increase in the transverse section in a plane yz of the body 40a from an upper end of the lateral surface 40b to its lower end, on the base of the guide body 40a.
  • the parabolic profile of the lateral guide body surface is concave with respect to the airflow entering (or exiting) through the air passages of the heat exchanger.
  • the frusto-conical guide body 40a has a substantially circular upper surface and a lower surface, concentric to the upper surface, substantially circular.
  • the axis of the impeller of the fan 19 is on the central axis A and therefore the motor body 46 is approximately centred on the central axis A.
  • the motor body occupies a motor area centrally arranged in the upper air passage opening 27.
  • the motor area of the motor body can be represented by the width of the motor body 46 in a direction perpendicular to the central axis A. With width is intended the maximum width of the motor body.
  • the guide body 40a is arranged so that the upper surface of the guide body is arranged below and at the motor area of the motor body. In this way, the airflow towards the fan continues upwards along the concave parabolic surface and, without being obstructed by the air turbulence created by the motor body in action, reaches the wing profile of the fan. This applies also if the fan's motor is operated so as to push the air towards the inside of the airflow volume.
  • the upper surface of the guide body has an outer diameter greater than or equal to the width of the motor body in a direction lying in a plane parallel to the upper surface, in the embodiment of the figures in a direction perpendicular to axis A.
  • the outer diameter of the upper surface is approximately equal to the width of the motor body.
  • the guide body 40a of the guide element 40 of generally frusto-conical shape is hollow and has an upper opening 43 concentric to the central axis A.
  • the hollow guide body has a lower opening on the resting surface 12.
  • the lower end of the side surface 40b delimits the lower opening at the base of the guide body (partially visible in figure 3 ) which is arranged on the resting surface 12.
  • the upper and lower surfaces of the hollow guide body 40a are generally ring shaped.
  • the guide body has a height H of 1050 mm, an upper surface with an outer diameter of about 160 mm and a lower surface with a diameter of about 1080 mm.
  • the guide body 40 has a height H greater than or equal to 0.8xL, with L being the maximum vertical extension of the heat exchanger 15 from the resting surface 12. More preferably, the height of the guide element 40 is comprised between 0.8xL and L. However, it is to be understood that, with a suitable sizing of the spacer element 18, the height of the guide element 40 could be higher than L. In some embodiments, the height H of the guide element is comprised between 0.8xL and 1.1xL.
  • the apparatus comprises a nebulizer device 30 for the evaporative cooling of the air inside the cylindrical airflow volume through the evaporation of a cooling liquid, preferably water, in contact with the air.
  • the guide body 40a is hollow.
  • the nebulizer device 30 comprises a distribution conduit 39 which extends vertically from the resting surface 12 and is arranged substantially centrally in the circular surface delimited by the heat exchanger 15.
  • the distribution conduit 39 extends inside the hollow guide body 40a along the central axis A.
  • the hollow guide body 40a of the guide element 40 is concentric to the distribution conduit 39, which passes through the upper opening 43 of the guide body.
  • the distribution conduit 39 has a lower inlet opening 48 ( figure 5 ) for the introduction of pressurized water, which can be at room temperature or refrigerated, from a source (e.g. tank or water mains) external to the cooling apparatus and not shown in the figures.
  • the distribution conduit further comprises an upper outlet opening for the pressurized water.
  • the distribution conduit 39 is mounted on a rotary joint 38, for rotation about the central axis A.
  • the rotary joint 38 is in turn mounted in a central through hole (not indicated) which from the resting surface 12 passes through the support structure 11.
  • the rotary joint 38 is motorized or activated by the water pressure, in known ways.
  • the distribution conduit is connected to at least one diffuser conduit provided with a plurality of nebulizing nozzles.
  • the at least one diffuser conduit is arranged vertically, in parallel with the distribution conduit and spaced therefrom, in a radially external position to the guide body.
  • the at least one diffuser conduit rotates in an integral manner with the distribution conduit along a circular line while the distribution conduit rotates about itself.
  • the at least one diffuser conduit is rigidly connected to the distribution conduit.
  • the at least one diffuser conduit is connected to the distribution conduit by means of a connection conduit and is suspended from the latter.
  • the circular line of rotation of the at least one diffuser conduit is radially external to the lower surface of the guide body and radially internal to the circular perimeter line that delimits the airflow volume on the resting surface 12.
  • the distribution conduit 39 is connected to a first and a second diffuser conduit 32a and 32b, arranged vertically, in parallel with the distribution conduit 39, and spaced from it so as to be arranged radially outside the guide body 40a.
  • the diffuser conduits 32a, 32b are connected to the distribution conduit 39 by means of a transverse connection conduit 33, preferably arranged horizontally. To facilitate rotation, the diffuser conduits are suspended from the connection conduit 33.
  • the length of the diffusion conduits 32a, 32b is preferably selected so that the conduits extend vertically to spray the inner surface of the heat exchange region 14, preferably the entire inner surface.
  • Pressurized water for example at a pressure between 1 and 10 bars, is pushed along the distribution conduit towards the upper outlet opening to exit from the nozzles 35 in the form of nebulized sprays.
  • the distribution conduit 39 is connected to a compressor (not shown).
  • the guide element 40 further comprises a collection tray 41 for collecting any excess nebulized water.
  • the collection tray 41 comprises a raised edge 42 along its perimeter and is arranged on the resting surface 12 of the support structure 11, in a radially external position to the frusto-conical guide body 40a.
  • the collection tray 41 which is mounted on the resting surface, surrounds and is in contact with the lower end of the side wall 40b of the guide body 40a.
  • the collection tray has an annular shape.
  • the collection tray 41 comprises a drainage opening (not visible), preferably arranged in an intermediate radial position between the edge 42 and the perimeter of the body 40a.
  • the drainage opening is arranged at a through opening of the support structure 11 so as to allow water to drain outside of the cooling apparatus.
  • the guide body 40a is hollow and the guide body and the collection plate 41 are constructed in one piece, preferably made of a plastic material, for example ABS (acrylonitrile-butadiene-styrene).
  • a plastic material for example ABS (acrylonitrile-butadiene-styrene).
  • the hollow guide body integrated with the collection tray can be made by thermoforming.
  • the collection tray 41 forms the base of the guide body 40a.
  • the heat exchanger is arranged on the collection tray 41, mounted along an inner circular line and concentric with respect to the edge 42 of the collection tray 41.
  • the collection tray 41 has a diameter greater than the diameter of the surface defined by the outer circular line of curvature of the heat exchanger 15.
  • the collection tray 41 comprises two through holes (not visible in figure 4 because they are hidden by the raised edge 42) at the holes 28a, 28b for the insertion/assembly of the first and second manifold 20, 21 in the support structure 11.
  • the nebulizer device can be configured to be activated in the case of relatively high ambient temperatures, for example higher than 30°C, and to be deactivated when the temperature falls below a threshold value.
  • the activation/deactivation of the nebulizer device can be controlled by a central control unit to which an ambient temperature detection system is connected.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Air Bags (AREA)
EP19160861.1A 2018-03-06 2019-03-05 Appareil de refroidissement Active EP3537089B8 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19160861T PL3537089T3 (pl) 2018-03-06 2019-03-05 Aparat chłodzący

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000003296A IT201800003296A1 (it) 2018-03-06 2018-03-06 Apparecchiatura di raffreddamento

Publications (3)

Publication Number Publication Date
EP3537089A1 true EP3537089A1 (fr) 2019-09-11
EP3537089B1 EP3537089B1 (fr) 2021-04-28
EP3537089B8 EP3537089B8 (fr) 2021-07-28

Family

ID=62530315

Family Applications (1)

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EP19160861.1A Active EP3537089B8 (fr) 2018-03-06 2019-03-05 Appareil de refroidissement

Country Status (5)

Country Link
EP (1) EP3537089B8 (fr)
DK (1) DK3537089T3 (fr)
ES (1) ES2882068T3 (fr)
IT (1) IT201800003296A1 (fr)
PL (1) PL3537089T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112053836A (zh) * 2020-09-07 2020-12-08 乐清市君德电气有限公司 一种大容量干式高频高压变压器
CN114745940A (zh) * 2022-05-25 2022-07-12 湖南和为通信有限公司 一种多网合一智慧物联终端设备
CN116841364A (zh) * 2023-08-30 2023-10-03 北京泰尧科技有限公司 一种液冷加固计算机机箱
EP4286785A1 (fr) * 2022-06-03 2023-12-06 Hamilton Sundstrand Corporation Diffuseur radial intégré avec moyeu de diffuseur mobile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1926794A1 (de) * 1969-05-24 1970-11-26 Albrich Dipl Ing Hermann Konvektor zur Raumbeheizung oder Kuehlung
JPS57172119A (en) * 1981-04-15 1982-10-22 Nippon Denso Co Ltd Convector attached with fan
US6354367B1 (en) * 2001-02-12 2002-03-12 Rheem Manufacturing Company Air conditioning unit having coil portion with non-uniform fin arrangement
WO2008136916A1 (fr) * 2007-05-07 2008-11-13 Aaf-Mcquay Inc. Ensemble d'échangeur de chaleur
US20160084579A1 (en) * 2014-09-24 2016-03-24 Raschid Alani Showole Heat Exchanger for a Condenser Unit which Eliminate Corner and Concentric Eddies for High Energy Efficiency

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1926794A1 (de) * 1969-05-24 1970-11-26 Albrich Dipl Ing Hermann Konvektor zur Raumbeheizung oder Kuehlung
JPS57172119A (en) * 1981-04-15 1982-10-22 Nippon Denso Co Ltd Convector attached with fan
US6354367B1 (en) * 2001-02-12 2002-03-12 Rheem Manufacturing Company Air conditioning unit having coil portion with non-uniform fin arrangement
WO2008136916A1 (fr) * 2007-05-07 2008-11-13 Aaf-Mcquay Inc. Ensemble d'échangeur de chaleur
US20160084579A1 (en) * 2014-09-24 2016-03-24 Raschid Alani Showole Heat Exchanger for a Condenser Unit which Eliminate Corner and Concentric Eddies for High Energy Efficiency

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112053836A (zh) * 2020-09-07 2020-12-08 乐清市君德电气有限公司 一种大容量干式高频高压变压器
CN114745940A (zh) * 2022-05-25 2022-07-12 湖南和为通信有限公司 一种多网合一智慧物联终端设备
CN114745940B (zh) * 2022-05-25 2024-05-14 湖南和为通信有限公司 一种多网合一智慧物联终端设备
EP4286785A1 (fr) * 2022-06-03 2023-12-06 Hamilton Sundstrand Corporation Diffuseur radial intégré avec moyeu de diffuseur mobile
CN116841364A (zh) * 2023-08-30 2023-10-03 北京泰尧科技有限公司 一种液冷加固计算机机箱
CN116841364B (zh) * 2023-08-30 2023-11-17 北京泰尧科技有限公司 一种液冷加固计算机机箱

Also Published As

Publication number Publication date
ES2882068T3 (es) 2021-12-01
EP3537089B8 (fr) 2021-07-28
PL3537089T3 (pl) 2021-12-13
DK3537089T3 (da) 2021-07-19
IT201800003296A1 (it) 2019-09-06
EP3537089B1 (fr) 2021-04-28

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