EP4367444A1 - Aeraulic device and radiant ceiling thermal system with internal air mixing - Google Patents

Aeraulic device and radiant ceiling thermal system with internal air mixing

Info

Publication number
EP4367444A1
EP4367444A1 EP22748070.4A EP22748070A EP4367444A1 EP 4367444 A1 EP4367444 A1 EP 4367444A1 EP 22748070 A EP22748070 A EP 22748070A EP 4367444 A1 EP4367444 A1 EP 4367444A1
Authority
EP
European Patent Office
Prior art keywords
radiant
ceiling
plenum
internal
air
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.)
Pending
Application number
EP22748070.4A
Other languages
German (de)
French (fr)
Inventor
Roberto AMATO
Paolo ARRUS
Alberto Franzi
Marco ROSA BRUSIN
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.)
Giacomini SpA
Original Assignee
Giacomini SpA
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 Giacomini SpA filed Critical Giacomini SpA
Publication of EP4367444A1 publication Critical patent/EP4367444A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0089—Systems using radiation from walls or panels
    • F24F5/0092—Systems using radiation from walls or panels ceilings, e.g. cool ceilings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/02—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation having means for ventilation or vapour discharge
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/0421—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like comprising ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/12—Tube and panel arrangements for ceiling, wall, or underfloor heating
    • F24D3/16—Tube and panel arrangements for ceiling, wall, or underfloor heating mounted on, or adjacent to, a ceiling, wall or floor
    • F24D3/165—Suspended radiant heating ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/10—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with air supply, or exhaust, through perforated wall, floor or ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0263—Insulation for air ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/242—Sound-absorbing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/14—Details or features not otherwise provided for mounted on the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/54—Heating and cooling, simultaneously or alternatively
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation

Definitions

  • the present invention relates to an aeraulic device and radiant ceiling thermal system with internal air mixing.
  • the present invention relates to a novel aeraulic device for air mixing and a related radiant thermal system with radiant elements or panels arranged in a false ceiling for heating and cooling provided with internal air mixing for closed spaces.
  • radiant hydronic system or radiant panel systems are widely used, especially in large spaces or rooms having high ceiling height, systems that are generally integrated into the room surfaces on walls, floors and even ceilings. These radiant type systems are fully built-in with the structure of the space to be air-conditioned and are invisible for the benefit of aesthetics and better use of space.
  • Said systems generally consist of a plurality of modular elements or radiant panels that define the radiant surface.
  • Each modular element or panel is generally assembled with a rigid supporting frame, typically rectangular in shape, within which is housed, with a typically coil arrangement, the pipeline for the passage of the thermal-carrier fluid.
  • Said panel pipeline is typically provided on the ends with connectors arranged at one or more sides of the panel in such a way that the pipeline of each modular element or panel defining the ceiling can be arranged in a fluid connection.
  • Said modular elements or panels including typically also one or more insulating layers or one or more conductive layers in such a way as to transfer or receive heat uniformly and preferentially from the side of the panel facing the room and insulate the side of the panel facing the wall or surface outside the room to be conditioned.
  • hydronic systems with radiant panels for space cooling also including dehumidifier devices to eliminate the phenomenon of water vapor condensation in the room.
  • hydronic radiant panel for heating and cooling systems arrangements with radiant panels arranged in false ceilings in such a way as to radiate or to absorb heat from above the room to be air- conditioned are increasingly used.
  • the false ceiling arrangement of radiant systems can be of the "closed” type, that is, when the plurality of elements or panels defining the false ceiling cover and completely od partially closing the upper slab, typically leaving a space, upper volume or cavity between the false ceiling formed by the panels and the upper slab of the room to be air-conditioned, or can be on the other way of the "open" type, when the false ceiling only partially covers the upper slab surface.
  • the radiant system when the radiant system is operating in heating mode, for example, supplying heat energy to the room, the warmer air tends naturally to vertically stratify by convection in the upper part of the room, particularly in the space or plenum between the false ceiling and the upper slab in such a way to preventing the mixing of the room air.
  • Air mixing increases the heat exchange capacity of the radiant system, as well as energy savings.
  • object of the present invention is to overcome and obviate, at least in part, the drawbacks and operating limitations of the above-mentioned radiant ceiling thermal systems. More particularly, object of the present invention is to provide to the user a radiant ceiling thermal system or installation with improved mixing of the air inside the room, without stratification phenomena of air at different temperatures in the upper part between the false ceiling and the upper slab of the room or space to be air-conditioned.
  • a further object of the present invention is to make available to the user a radiant ceiling thermal system with air mixing that can be easily installed or integrated with pre-existing systems and rooms.
  • Figure 1 is a schematic representation of a cross-sectional view of an embodiment of the radiant ceiling thermal system with air-mixing object of the present invention in a "closed" type configuration;
  • Figure 2 is a schematic representation of a cross-sectional view of a further embodiment of a radiant ceiling thermal system with mixing object of the present invention in an "open" type configuration;
  • Figure 3 is a schematic representation of a cross-sectional view of a further embodiment of a radiant ceiling thermal system with mixing object of the present invention in a closed-type configuration with the upper volume or plenum arranged and integrated into the radiant panels;
  • figure 4 is a schematic representation of a longitudinal cross-sectional view of a preferred embodiment form of the aeraulic device for radiant ceiling thermal systems object of the present invention;
  • figure 5 is a schematic representation of a cross-sectional view of internal air stratification in a room with a traditional radiant ceiling thermal system according to known art, configured for operation in heating mode;
  • Figure 6 is a schematic representation of a sectional view of internal air stratification in a room with a traditional radiant ceiling thermal system according to known art, configured for operation in cooling mode.
  • false ceiling and radiant surface are intended to refer both to surfaces configured to transfer heat in the form of thermal energy to the internal room 100 and surfaces configured to absorb heat by extracting thermal energy from the internal room 100.
  • the radiant thermal system also comprises a traditional thermal machine, or it is otherwise configured to operate in cooperation with a traditional thermal machine, refrigerating machine, or heat pump for thermal heat generation and/ or absorption.
  • internal air refers to the air present in the internal room below the false ceiling also including the upper volume or plenum above the false ceiling, without air recirculation or exchange with the outdoor environment.
  • an a Vogellic device 1 for a radiant ceiling thermal system 10 of an internal room 100 subject of the present invention comprising a case body 2 having an inlet opening 3 and an outlet opening 4, at least a fan 30, housed internally in said case body 2, configured to move an air flow between the inlet opening 3 and the inlet opening 4 and vice-versa.
  • T is configured and suitable to be arranged in an upper volume or plenum 20 of said internal room 100 above the false ceiling 14 of said radiant system 10.
  • Said inlet opening 3 and outlet opening 4 are configured and suitable to be placed in fluid connection with said internal room 100 and said upper volume or plenum 20 in cooperation with at least two openings 18 of the false ceiling 14, so that said fan 30 is apt to generate an air-mixing flow between said internal room 100 and said upper volume or plenum 20 of a conventional radiant ceiling thermal system 10.
  • Said fans 30 can advantageously be traditional axial impeller fans configured to move the airflow but can also comprise any type of fan capable of moving airflow such as radial fans or vaneless fans, typically driven by an electric motor.
  • the inlet and outlet openings 3, 4 of said aeraulic device 1 are generally formed into the case body 2 and can define a linear direction, a 90° direction or an angled direction of the airflow passing through the aeraulic device 1, T.
  • Said inlet and outlet openings 3, 4 also can be more than one and can be provided with known connecting means (not shown) to openings 18 of a radiant false ceiling 14 such as elbows or connector pipes.
  • Said a Vogellic devices 1 can also comprise at the inlet and outlet openings 3, 4 diverting and conveying means 5 of the airflow selected from a group comprising, for example, fixed or adjustable vanes or blades, conveyors, slits formed directly into the case body 2 or baffle elements separated from the case body 2 and such as to allow the direct of the airflow, and the flow-rate calibration and adjustment of the airflow.
  • the a Vogellic device 1 can also be advantageously provided with a removable filter element 6 suitable for the removal of dust and particles in the air and with an air sanitizing device 7 or system suitable for delivering or releasing into the air stream sanitizing and bactericidal substances, such as a traditional spray device connected to a tank (not shown) .
  • the aunterlic device 1 can also be provided with a sound-absorbing or thermo-acoustic insulation material layer 8 arranged internally (as in the example in Figure 4) or externally to the case body 2.
  • the radiant ceiling thermal system 10 comprises in its general embodiment:
  • a radiant surface or false ceiling 14 formed by one or more of radiant panels 12 connectable to each other, said radiant panels being provided with pipeline 15 suitable for transporting a heat carrier fluid;
  • Said false ceiling 14 formed by one or more interconnected radiant panels 12, is provided with at least two openings 18 suitable for placing in inlet and outlet fluid connection said internal room 100 with said upper volume or plenum 20.
  • Said radiant ceiling thermal system 10 is provided of the innovative feature of comprising at least one aeraulic device 1, T, above described, arranged above said false ceiling 14 between said internal room 100 and said upper volume or plenum 20, said aeraulic device 1, T being suitable for circulating air in such a manner as to mixing said circulating internal air through said openings 18 and prevent its stratification at different temperatures.
  • the false ceiling 14 generally has an exposed surface in direct contact with the internal room 100 and can have a smooth or micro-perforated finish and can be made of metal, plasterboard, or other compatible building materials.
  • the at least two openings 18 are formed directly into two or more radiant panels 12, in such a way as to place in fluid connection the internal room 100 and the upper volume or plenum 20.
  • said openings 18 can be defined by the absence or by the array interruption of one or more elements or radiant panels 12 to form the ceiling 14.
  • Said at least an a Vogellic device 1 for air circulation can be arranged with the inlet opening 3 or outlet opening 4 placed at said at least two openings 18 and configured in such a way as to move the inlet and outlet internal air into the upper volume or plenum 20.
  • Said radiant ceiling thermal system 10 can be provided with an external support structure 16 suitable for attaching said panels to the load-bearing surfaces of the internal room 100 or upper slab 102 and configured in such a way as to define the vertical height of said volume or plenum 20.
  • the support structure 16 of the false ceiling 14 can generally be provided by the rigid frame of radiant panels 12 interconnected to each other and to the surface of the upper floor slab 102 or to the walls of the internal room by means of known means of attachment not shown, such as brackets joints screws etc.
  • Said support structure 16 can also be independent of the radiant panels 12 and stabilized to the load-bearing structure of the internal room 100 prior to the arrangement and connection of the same radiant panels 102 to form the false ceiling 14.
  • the radiant ceiling thermal system 10 can comprises further more aeraulic devices 1' advantageously arranged in pairs, with an aeraulic device 1 configured for the inlet and an aeraulic device 1' configured for the outlet of the internal air flow in the upper volume 20.
  • deferral a Vogellic devices 1' can be provided and suitable for maintaining constant air flow within the upper volume or plenum 20.
  • the false ceiling 14 can be smaller in size than the area of the upper slab 102 and be configured to cover only a portion thereof, in this case the at least two openings 18 are defined by the surface portion of the upper slab 102 not covered by the false ceiling 14. These at least two openings 18 are formed directly into two or more radiant panels 12 in such a way as to place the internal room 100 and the upper volume or plenum 20 in fluid connection.
  • the false ceiling 14, formed by one or more radiant panels 20, typically comprises brackets or tie rods 16' suitable for keeping the false ceiling 14 suspended from the surface of the upper slab 102.
  • Said at least an aeraulic device 1 suitable for air circulation can be arranged on the top of the false ceiling 14 and stabilized directly on the radiant panels 12, said aeraulic device 1 being configured in such a way as to move the incoming and outcoming air into the upper volume or plenum 20, even if not integrally bounded by the false ceiling 14.
  • the fan 30 arranged within the aunterlic device 1 can be any type of fan, or blower, such as a radial type impeller fan, an axial bladed fan, or an axial vaneless fan.
  • additional transmission fans 30 can be provided, configured to keep the internal air flow constantly circulating within the internal volume or plenum 20.
  • the false ceiling 14 and radiant panels 12 can also be devoid of a thermal insulating layer on the face opposite that facing the internal 100 and can instead advantageously comprise an acoustic insulation layer or multilayer insulation with acoustic insulating features.
  • said upper volume or plenum 20 can be formed and integrated directly within the structure of the connected radiant panels 12 and arranged between the supporting surface of the pipeline 15 of the heat carrier fluid and a thermal insulating layer 42 suitable for defining a thermal insulating surface 44 in cooperation with a plurality of radiant panels 12.
  • the radiant panel 12 can advantageously comprises a support structure 16 or frame configured to maintain the pipeline 15 support surface at a distal position from the thermal insulating layer 42 in such a way that an upper volume or plenum 20 arranged between the false ceiling 14 and the thermal insulating surface 44 can be realized in cooperation with a plurality of radiant panels 12.
  • Said support structure 16 can also be advantageously fixed to the load-bearing structure of the internal room 100.
  • said a Vogellic devices 1, 1' for air circulation can be arranged with the inlet and outlet openings 3, 4, placed therein the same at least two openings 18, only formed on the false ceiling 14 and not on the thermal insulating surface 44, or arranged within the upper volume or plenum 20 and configured in such a way as to move the inlet and outlet air into the upper volume or plenum 20.
  • said fans 30 of the aeraulic devices 1, 1' can be radial fans configured to move the air flow by changing its direction by 90° but can also comprise any type of fan suitable for moving the air such as axial blade fans or axial vaneless fans.
  • said aeraulic devices 1, 1' can be fixed directly to the false ceiling 14 on the radiant panels 12, to the support structure 16 or to the surface of the upper slab 102, or they can be fixed by an auxiliary support frame (not shown).
  • the radiant panels 14 can be advantageously shaped in such a way as to allow the opening 18 to be made for the passage of air flow and for anchoring the support frame of the aeraulic devices 1, T.
  • the pipeline 15 of the thermal carrier fluid of the radiant panels 12 can also be shaped and arranged in such a way as to allow the opening 18 for the passage of air flow to be obtained subsequently, in order to have a radiant panel 12 having a single shape suitable to defining the false ceiling 14 once installed.
  • Said auxiliary support frame (not shown) of the aeraulic devices 1, T can also be advantageously orientable in such a way as to direct the airflow of the aunterlic devices 1, so as to define preferential flows within the upper volume or plenum 20.
  • the radiant ceiling thermal system 10 subject of the present invention can also comprise a fan control system 30 of the aeraulic devices 1 controlled by a logic unit in such a way as to operate continuously or intermittently.
  • Said control system can also comprise temperature sensors arranged in the whole room 10 and upper volume 20 in such a manner as to operate the fans 30 for example when the logic unit detects a temperature differential above a certain limit.
  • the aunterlic device 1 subject of the present invention has, in a simplified embodiment, a case body with an inlet and outlet 3, 4 configured for inlet and outlet of the airflow generated by the fan 30.
  • Said device is arranged above the radiant ceiling 14, as in the examples of figures 1 and 2, and it is configured to drawing in and feeding air into the upper volume or plenum 20 and then feeding it back into the internal room 100.
  • the aeraulic device 1 is arranged at or near each opening 18 and for each aeraulic device 1 configured to feed air into the upper volume or plenum 20 from the internal room 100, an additional aeraulic device 1 configured to take air from the upper volume or plenum 20 and feed it back into the internal room 100 can be coupled for greater efficiency.
  • inlet and outlet openings 3 and 4 are defined by the direction of the airflow movement given by fan 30 and can be reversed.
  • the fan 30 inside the case body can be configured to move the airflow in either direction.
  • two aunterlic devices 1 are arranged at openings 18 in the ceiling 14.
  • the aunterlic device 1 of extracting air from the internal room 100 is arranged with the inlet opening 3 connected to an opening 18 while the outlet opening 4 is in fluid connection with the upper volume or plenum 20.
  • the aeraulic device T of reintroducing air into the internal room is configured with the inlet opening 3 in fluid connection with the upper volume or plenum 20 and the outlet opening 4 connected with the other opening 18.
  • a filter element collects dust and particles present in the air while the presence of an air sanitizing device 7 or system releases sanitizing and bactericidal substances contained in a reservoir into the airflow, so as to purify and sanitize the mixing airflow.
  • an additional sound-absorbing layer 8 in the case body 2 makes the device quieter by eliminating noise and vibration due to the fan 30 and its electric motor.
  • the deflection and conveying means 5 of the flow such as vanes, conveyors or slits arranged at the inlet and outlet openings 3, 4, allow preferential orientation of the airflow input to the upper volume or plenum 20, the calibration and adjustment of the flow rate, but also allow improved airflow capture from the upper volume or plenum 20 by improving the recirculation flow and thus the air mixing between the upper volume or plenum 20 and the internal room 100.
  • the hot or cold air that tends to stratify in the upper volume or plenum 20 above the ceiling 14, as shown in the example in Figure 5, is advantageously mixed with the air from the internal room 100 by means of the fans 30 of the aunterlic device 1, to create a recirculating internal air flow indicated in Figure 1 by the circuit F of arrows.
  • the fan 30 of at least one aunterlic device 1 is configured to draw air from the inlet opening 3 in the internal room 100 through an opening 18 and feed it into the upper volume or plenum 20 in a manner that mixes with the stratified air and then is fed back into the internal room 100 through an additional aeraulic device 1.
  • the stratified air above the false ceiling 14 is mixed into the internal room 100 by the recirculating internal air flow generated by the axial fan 30 of the aeraulic device 1 according to the circuit F of the arrows in Figure 2.
  • the mixing of internal air generated by the at least one a Vogellic device 1, through the openings 18, is capable to equalize the temperature T A [°C] of the internal room 100 and limit energy consumption by going to use the energy stored in the air stratified in the upper volume or plenum 20 above the false ceiling 20.
  • the technical solution subject of the present invention is also further advantageous because it allows the use of simpler and lighter radiant panels 12 without the need for an insulating layer on the opposite face to the face facing the internal room 100, or advantageously allows the thermal insulating layer to be replaced by an acoustic insulating layer.
  • the internal volume or plenum 20 can advantageously be realized inside to the plurality of radiant panels 12 forming the ceiling 14, arranged between the exposed surface in contact with the heat carrier fluid pipeline 15 and an insulating layer 42.
  • the aunterlic device 1 can have the size and the structure of a traditional radiant panel 12, comprising pipeline 15 and hydraulic connecting means to the other radiant panels 12 in such a way as to be integrated into the structure of the radiant surface or false ceiling 14.
  • the a somehowlic device 1 can also comprise an insulating layer 42 arranged in contact with or opposite to the part containing the pipeline 15 with the inner volume or plenum between the pipeline and the insulating layer 42, as in the example in Figure 3.
  • This embodiment is advantageously applicable on installations in which the upper volume or plenum 20 has considerable dimensions for which an efficient recirculation flow of internal air would not be achievable.
  • the a Vogellic devices 1 convey air drawn from the internal room 100 into the upper volume or plenum 20 arranged between the pipeline 15 of the false ceiling 14 and an insulating layer 42 and then feed it back into the internal room.
  • the recirculation airflow shown in Figure 3 with circuit F of arrows also allows the stored stratified thermal (or cooling) energy in the upper volume or plenum 20 to be collected.
  • This solution in addition to allowing a uniformity of the temperature T A [°C] of the internal room 100, allows energy saving by avoiding mixing of the internal air of rooms in very high ceilings or vaults, also allowing the use of an insulating layer 42 and a less thick insulating surface 44, thus advantageously allowing the addition of, for example, other layers of sound insulation while at the same time maintaining compact radiant panel dimensions 12.
  • the management of the speed of the fans 30 of the a somehowlic device 1 by means of an electrical or electronic system allows to realize a mixing system that can be manually controlled or automatically operated by a desired operating logic.
  • the radiant system 10 subject of the present invention also comprises a dehumidifier device for lowering the humidity level of the air in the internal room 100.
  • the aeraulic device and the radiant ceiling thermal system 10 subject of the present invention are particularly advantageous because thanks to the mixing the internal air of a room, it allows the improvement of living comfort and equalizes the temperature of the internal room by avoiding stratification of air at different temperatures and reducing energy consumption. Mixing enhances convective motions that are already naturally present, extending them to areas of the radiant ceiling thermal system with high energy potential that would otherwise be less involved. The increase in said motions allows an improvement in the convective heat transfer of the ceiling.
  • a further advantage of the radiant ceiling thermal system is to provide the user with a radiant ceiling thermal system 10 that can also be easily integrated even on pre-existing installations with very high ceilings or vaults.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

An aeraulic device (1, 1') for radiant ceiling thermal systems (10) of an internal room (100) comprises a case body (2) having an inlet opening (3) and an outlet opening (4) and at least a fan (30), housed internally in said case body (2), configured to move an airflow between said inlet opening (3) and outlet opening (4). Said aeraulic device (1, 1') is configured and suitable to be arranged in an upper volume or plenum (20) of the internal room (100) above the false ceiling (14) of said radiant system (10) and wherein said inlet opening (3) and outlet opening (4) are configured and suitable to be placed in fluid connection with said internal room (100) and said upper volume or plenum (20) in cooperation with at least two openings (18) of the false ceiling (14). The invention also comprises a radiant ceiling thermal system (10) provided with the aeraulic device (1,1').

Description

AERAULIC DEVICE AND RADIANT CEILING THERMAL SYSTEM WITH
INTERNAL AIR MIXING";
FIELD OF THE INVENTION
The present invention relates to an aeraulic device and radiant ceiling thermal system with internal air mixing.
More particularly, the present invention relates to a novel aeraulic device for air mixing and a related radiant thermal system with radiant elements or panels arranged in a false ceiling for heating and cooling provided with internal air mixing for closed spaces. BACKGROUND OF THE ART
In the field of air-conditioning for heating/cooling of spaces or rooms, radiant hydronic system or radiant panel systems are widely used, especially in large spaces or rooms having high ceiling height, systems that are generally integrated into the room surfaces on walls, floors and even ceilings. These radiant type systems are fully built-in with the structure of the space to be air-conditioned and are invisible for the benefit of aesthetics and better use of space.
Said systems generally consist of a plurality of modular elements or radiant panels that define the radiant surface. Each modular element or panel is generally assembled with a rigid supporting frame, typically rectangular in shape, within which is housed, with a typically coil arrangement, the pipeline for the passage of the thermal-carrier fluid. Said panel pipeline is typically provided on the ends with connectors arranged at one or more sides of the panel in such a way that the pipeline of each modular element or panel defining the ceiling can be arranged in a fluid connection. Said modular elements or panels including typically also one or more insulating layers or one or more conductive layers in such a way as to transfer or receive heat uniformly and preferentially from the side of the panel facing the room and insulate the side of the panel facing the wall or surface outside the room to be conditioned.
It is also known that hydronic systems with radiant panels for space cooling also including dehumidifier devices to eliminate the phenomenon of water vapor condensation in the room. Among the various types of technical and architectural embodiments of hydronic radiant panel for heating and cooling systems, arrangements with radiant panels arranged in false ceilings in such a way as to radiate or to absorb heat from above the room to be air- conditioned are increasingly used.
The false ceiling arrangement of radiant systems can be of the "closed" type, that is, when the plurality of elements or panels defining the false ceiling cover and completely od partially closing the upper slab, typically leaving a space, upper volume or cavity between the false ceiling formed by the panels and the upper slab of the room to be air-conditioned, or can be on the other way of the "open" type, when the false ceiling only partially covers the upper slab surface.
An example of these radiant ceiling thermal systems is described in the European Patent Application EP 3 309 314 Al.
Further examples of these known radiant ceiling thermal systems are described in Chinese document CN 105756256 B and German document DE 10 2011 108090 Al.
A limitation of these known radiant ceiling thermal systems for heating and cooling is that the internal air tends to stratify and accumulate in the spaces above the ceiling.
More specifically, when the radiant system is operating in heating mode, for example, supplying heat energy to the room, the warmer air tends naturally to vertically stratify by convection in the upper part of the room, particularly in the space or plenum between the false ceiling and the upper slab in such a way to preventing the mixing of the room air.
Even if the radiant elements or panels defining the radiant surface or false ceiling are provided with an insulation layer arranged on the face opposite to that facing the internal room, heat loss (or heat absorption in the case of cooling) to the smaller spaces between the false ceiling and the upper slab will still be present generating and maintaining an unused thermal energy reservoir.
This limitation and drawback of radiant ceiling thermal systems is also present in the case of radiant system operation in cooling mode, where it has been noted that even the air at lower temperature tends to stratify in the volume or space above the internal room close to the top of the ceiling, also generating condensation phenomena if the ceiling surface is close to dew point temperature, that can lead to unhealthy conditions in the internal room.
Air mixing increases the heat exchange capacity of the radiant system, as well as energy savings.
OBJECTS OF THE INVENTION
It is an object of the present invention to overcome and obviate, at least in part, the drawbacks and operating limitations of the above-mentioned radiant ceiling thermal systems. More particularly, object of the present invention is to provide to the user a radiant ceiling thermal system or installation with improved mixing of the air inside the room, without stratification phenomena of air at different temperatures in the upper part between the false ceiling and the upper slab of the room or space to be air-conditioned.
A further object of the present invention is to make available to the user a radiant ceiling thermal system with air mixing that can be easily installed or integrated with pre-existing systems and rooms.
A further object of the present invention is to provide an efficient and energy-saving radiant ceiling thermal system with air mixing; Still further object of the present invention is to provide a radiant ceiling thermal system with a simplified air mixing that capable of a high level of durability and reliability over time and such as that it can also be easily and economically achievable.
These and other objects are achieved by the radiant ceiling thermal system with air mixing which is the subject of the present invention according with the independent claim.
The structural and functional features of the radiant ceiling thermal system with air mixing can be better understood from the detailed description that follows, in which reference is made to the attached drawing figures which representing several preferred and non-limiting embodiments, where:
BRIEF DESCRIPTION OF THE FIGURES
Figure 1 is a schematic representation of a cross-sectional view of an embodiment of the radiant ceiling thermal system with air-mixing object of the present invention in a "closed" type configuration;
Figure 2 is a schematic representation of a cross-sectional view of a further embodiment of a radiant ceiling thermal system with mixing object of the present invention in an "open" type configuration;
Figure 3 is a schematic representation of a cross-sectional view of a further embodiment of a radiant ceiling thermal system with mixing object of the present invention in a closed-type configuration with the upper volume or plenum arranged and integrated into the radiant panels; figure 4 is a schematic representation of a longitudinal cross-sectional view of a preferred embodiment form of the aeraulic device for radiant ceiling thermal systems object of the present invention; figure 5 is a schematic representation of a cross-sectional view of internal air stratification in a room with a traditional radiant ceiling thermal system according to known art, configured for operation in heating mode;
Figure 6 is a schematic representation of a sectional view of internal air stratification in a room with a traditional radiant ceiling thermal system according to known art, configured for operation in cooling mode.
DETAILED DESCRIPTION OF THE INVENTION
In this description, the terms "false ceiling" and "radiant surface" are intended to refer both to surfaces configured to transfer heat in the form of thermal energy to the internal room 100 and surfaces configured to absorb heat by extracting thermal energy from the internal room 100.
It will also resulting evident from the following to the person skilled in the art how the radiant thermal system also comprises a traditional thermal machine, or it is otherwise configured to operate in cooperation with a traditional thermal machine, refrigerating machine, or heat pump for thermal heat generation and/ or absorption.
In the following description, the term "internal air" refers to the air present in the internal room below the false ceiling also including the upper volume or plenum above the false ceiling, without air recirculation or exchange with the outdoor environment.
With reference starting to Figures 1 to 3 and particularly to Figure 4, an aeraulic device 1 for a radiant ceiling thermal system 10 of an internal room 100 subject of the present invention is described below and comprising a case body 2 having an inlet opening 3 and an outlet opening 4, at least a fan 30, housed internally in said case body 2, configured to move an air flow between the inlet opening 3 and the inlet opening 4 and vice-versa.
Said aeraulic device 1, T is configured and suitable to be arranged in an upper volume or plenum 20 of said internal room 100 above the false ceiling 14 of said radiant system 10. Said inlet opening 3 and outlet opening 4 are configured and suitable to be placed in fluid connection with said internal room 100 and said upper volume or plenum 20 in cooperation with at least two openings 18 of the false ceiling 14, so that said fan 30 is apt to generate an air-mixing flow between said internal room 100 and said upper volume or plenum 20 of a conventional radiant ceiling thermal system 10.
Said fans 30 can advantageously be traditional axial impeller fans configured to move the airflow but can also comprise any type of fan capable of moving airflow such as radial fans or vaneless fans, typically driven by an electric motor.
The inlet and outlet openings 3, 4 of said aeraulic device 1 are generally formed into the case body 2 and can define a linear direction, a 90° direction or an angled direction of the airflow passing through the aeraulic device 1, T. Said inlet and outlet openings 3, 4 also can be more than one and can be provided with known connecting means (not shown) to openings 18 of a radiant false ceiling 14 such as elbows or connector pipes.
Said aeraulic devices 1 can also comprise at the inlet and outlet openings 3, 4 diverting and conveying means 5 of the airflow selected from a group comprising, for example, fixed or adjustable vanes or blades, conveyors, slits formed directly into the case body 2 or baffle elements separated from the case body 2 and such as to allow the direct of the airflow, and the flow-rate calibration and adjustment of the airflow.
With reference again to Figure 4, the aeraulic device 1 can also be advantageously provided with a removable filter element 6 suitable for the removal of dust and particles in the air and with an air sanitizing device 7 or system suitable for delivering or releasing into the air stream sanitizing and bactericidal substances, such as a traditional spray device connected to a tank (not shown) .
The aeraulic device 1 can also be provided with a sound-absorbing or thermo-acoustic insulation material layer 8 arranged internally (as in the example in Figure 4) or externally to the case body 2.
With reference only to Figures 1 to 3, the radiant ceiling thermal system 10 subject of the present invention for heating and cooling an internal room 100 is described below in several preferred embodiments.
The radiant ceiling thermal system 10 comprises in its general embodiment:
- a radiant surface or false ceiling 14 formed by one or more of radiant panels 12 connectable to each other, said radiant panels being provided with pipeline 15 suitable for transporting a heat carrier fluid;
- an upper volume or plenum 20 comprised between the false ceiling 14 and the surface of the upper slab 102 of said internal room 100.
Said false ceiling 14, formed by one or more interconnected radiant panels 12, is provided with at least two openings 18 suitable for placing in inlet and outlet fluid connection said internal room 100 with said upper volume or plenum 20.
Said radiant ceiling thermal system 10 is provided of the innovative feature of comprising at least one aeraulic device 1, T, above described, arranged above said false ceiling 14 between said internal room 100 and said upper volume or plenum 20, said aeraulic device 1, T being suitable for circulating air in such a manner as to mixing said circulating internal air through said openings 18 and prevent its stratification at different temperatures.
The false ceiling 14 generally has an exposed surface in direct contact with the internal room 100 and can have a smooth or micro-perforated finish and can be made of metal, plasterboard, or other compatible building materials.
With particular reference to the "closed" embodiment form of Figure 1, where the ceiling 14 is configured to cover the entire surface of the upper slab 102, the at least two openings 18 are formed directly into two or more radiant panels 12, in such a way as to place in fluid connection the internal room 100 and the upper volume or plenum 20.
In other possible further variant embodiments said openings 18 can be defined by the absence or by the array interruption of one or more elements or radiant panels 12 to form the ceiling 14.
Said at least an aeraulic device 1 for air circulation can be arranged with the inlet opening 3 or outlet opening 4 placed at said at least two openings 18 and configured in such a way as to move the inlet and outlet internal air into the upper volume or plenum 20.
Said radiant ceiling thermal system 10 can be provided with an external support structure 16 suitable for attaching said panels to the load-bearing surfaces of the internal room 100 or upper slab 102 and configured in such a way as to define the vertical height of said volume or plenum 20.
Again with reference to Figure 1, the support structure 16 of the false ceiling 14 can generally be provided by the rigid frame of radiant panels 12 interconnected to each other and to the surface of the upper floor slab 102 or to the walls of the internal room by means of known means of attachment not shown, such as brackets joints screws etc.
Said support structure 16 can also be independent of the radiant panels 12 and stabilized to the load-bearing structure of the internal room 100 prior to the arrangement and connection of the same radiant panels 102 to form the false ceiling 14.
Again with reference to the embodiment form of figure 1 and also figure 3, the radiant ceiling thermal system 10 can comprises further more aeraulic devices 1' advantageously arranged in pairs, with an aeraulic device 1 configured for the inlet and an aeraulic device 1' configured for the outlet of the internal air flow in the upper volume 20.
With special reference to Figure 3, in radiant ceiling thermal system s 10 with very large radiant surfaces, deferral aeraulic devices 1' can be provided and suitable for maintaining constant air flow within the upper volume or plenum 20.
For a very extensive radiant surface 14 additional return fans 30 can be arranged configured to maintain a constant and uniform flow of circulating internal air within the upper volume or plenum 20. With reference again to Figures land 3, it will be clear to a person skilled in the art, how the inlet and outlet openings 3, 4 and the direction of rotation of the fans 30 of the aeraulic devices 1 can be reversed depending on whether the aeraulic device 10 is configured to feed air into the upper volume or plenum 20 by extracting it from the internal room 100, or to extract air from the upper volume or plenum 20 to feed it into the internal room.
In an alternative "open" type embodiment, with special reference to Figure 2, the false ceiling 14 can be smaller in size than the area of the upper slab 102 and be configured to cover only a portion thereof, in this case the at least two openings 18 are defined by the surface portion of the upper slab 102 not covered by the false ceiling 14. These at least two openings 18 are formed directly into two or more radiant panels 12 in such a way as to place the internal room 100 and the upper volume or plenum 20 in fluid connection.
Again with reference to the embodiment of Figure 2, the false ceiling 14, formed by one or more radiant panels 20, typically comprises brackets or tie rods 16' suitable for keeping the false ceiling 14 suspended from the surface of the upper slab 102.
Said at least an aeraulic device 1 suitable for air circulation can be arranged on the top of the false ceiling 14 and stabilized directly on the radiant panels 12, said aeraulic device 1 being configured in such a way as to move the incoming and outcoming air into the upper volume or plenum 20, even if not integrally bounded by the false ceiling 14.
The fan 30 arranged within the aeraulic device 1 can be any type of fan, or blower, such as a radial type impeller fan, an axial bladed fan, or an axial vaneless fan.
If the ceiling 14 surface is very wide, additional transmission fans 30 can be provided, configured to keep the internal air flow constantly circulating within the internal volume or plenum 20.
In the embodiments of Figures 1 and 2, the false ceiling 14 and radiant panels 12 can also be devoid of a thermal insulating layer on the face opposite that facing the internal 100 and can instead advantageously comprise an acoustic insulation layer or multilayer insulation with acoustic insulating features.
In a further embodiment of the radiant system 10, with particular reference to Figure 3, said upper volume or plenum 20 can be formed and integrated directly within the structure of the connected radiant panels 12 and arranged between the supporting surface of the pipeline 15 of the heat carrier fluid and a thermal insulating layer 42 suitable for defining a thermal insulating surface 44 in cooperation with a plurality of radiant panels 12.
The radiant panel 12 can advantageously comprises a support structure 16 or frame configured to maintain the pipeline 15 support surface at a distal position from the thermal insulating layer 42 in such a way that an upper volume or plenum 20 arranged between the false ceiling 14 and the thermal insulating surface 44 can be realized in cooperation with a plurality of radiant panels 12.
Said support structure 16 can also be advantageously fixed to the load-bearing structure of the internal room 100.
Still with reference to Figure 3, said aeraulic devices 1, 1' for air circulation can be arranged with the inlet and outlet openings 3, 4, placed therein the same at least two openings 18, only formed on the false ceiling 14 and not on the thermal insulating surface 44, or arranged within the upper volume or plenum 20 and configured in such a way as to move the inlet and outlet air into the upper volume or plenum 20.
In the latest embodiment also, said fans 30 of the aeraulic devices 1, 1' can be radial fans configured to move the air flow by changing its direction by 90° but can also comprise any type of fan suitable for moving the air such as axial blade fans or axial vaneless fans.
With reference to all the embodiments, said aeraulic devices 1, 1' can be fixed directly to the false ceiling 14 on the radiant panels 12, to the support structure 16 or to the surface of the upper slab 102, or they can be fixed by an auxiliary support frame (not shown). The radiant panels 14 can be advantageously shaped in such a way as to allow the opening 18 to be made for the passage of air flow and for anchoring the support frame of the aeraulic devices 1, T.
The pipeline 15 of the thermal carrier fluid of the radiant panels 12 can also be shaped and arranged in such a way as to allow the opening 18 for the passage of air flow to be obtained subsequently, in order to have a radiant panel 12 having a single shape suitable to defining the false ceiling 14 once installed.
Said auxiliary support frame (not shown) of the aeraulic devices 1, T can also be advantageously orientable in such a way as to direct the airflow of the aeraulic devices 1, so as to define preferential flows within the upper volume or plenum 20.
The radiant ceiling thermal system 10 subject of the present invention can also comprise a fan control system 30 of the aeraulic devices 1 controlled by a logic unit in such a way as to operate continuously or intermittently. Said control system can also comprise temperature sensors arranged in the whole room 10 and upper volume 20 in such a manner as to operate the fans 30 for example when the logic unit detects a temperature differential above a certain limit.
From the description of the aeraulic device 1 and the radiant ceiling thermal system 10 subject of the present invention it is possible understanding the operation described below. With reference starting to Figure 4, the aeraulic device 1 subject of the present invention has, in a simplified embodiment, a case body with an inlet and outlet 3, 4 configured for inlet and outlet of the airflow generated by the fan 30.
Said device is arranged above the radiant ceiling 14, as in the examples of figures 1 and 2, and it is configured to drawing in and feeding air into the upper volume or plenum 20 and then feeding it back into the internal room 100.
The aeraulic device 1 is arranged at or near each opening 18 and for each aeraulic device 1 configured to feed air into the upper volume or plenum 20 from the internal room 100, an additional aeraulic device 1 configured to take air from the upper volume or plenum 20 and feed it back into the internal room 100 can be coupled for greater efficiency.
It is evident how the inlet and outlet openings 3 and 4 are defined by the direction of the airflow movement given by fan 30 and can be reversed.
The fan 30 inside the case body can be configured to move the airflow in either direction.
In a preferred embodiment of Figure 1, two aeraulic devices 1 are arranged at openings 18 in the ceiling 14. The aeraulic device 1 of extracting air from the internal room 100 is arranged with the inlet opening 3 connected to an opening 18 while the outlet opening 4 is in fluid connection with the upper volume or plenum 20. While the aeraulic device T of reintroducing air into the internal room is configured with the inlet opening 3 in fluid connection with the upper volume or plenum 20 and the outlet opening 4 connected with the other opening 18.
The optional presence of a filter element collects dust and particles present in the air while the presence of an air sanitizing device 7 or system releases sanitizing and bactericidal substances contained in a reservoir into the airflow, so as to purify and sanitize the mixing airflow.
The presence of an additional sound-absorbing layer 8 in the case body 2 makes the device quieter by eliminating noise and vibration due to the fan 30 and its electric motor.
Again with reference to Figure 4, the deflection and conveying means 5 of the flow such as vanes, conveyors or slits arranged at the inlet and outlet openings 3, 4, allow preferential orientation of the airflow input to the upper volume or plenum 20, the calibration and adjustment of the flow rate, but also allow improved airflow capture from the upper volume or plenum 20 by improving the recirculation flow and thus the air mixing between the upper volume or plenum 20 and the internal room 100. With initial reference to Figure 1, in the first embodiment of the radiant ceiling thermal system 10, the hot or cold air that tends to stratify in the upper volume or plenum 20 above the ceiling 14, as shown in the example in Figure 5, is advantageously mixed with the air from the internal room 100 by means of the fans 30 of the aeraulic device 1, to create a recirculating internal air flow indicated in Figure 1 by the circuit F of arrows. The fan 30 of at least one aeraulic device 1 is configured to draw air from the inlet opening 3 in the internal room 100 through an opening 18 and feed it into the upper volume or plenum 20 in a manner that mixes with the stratified air and then is fed back into the internal room 100 through an additional aeraulic device 1.
Also in the embodiment of Figure 2, the stratified air above the false ceiling 14 is mixed into the internal room 100 by the recirculating internal air flow generated by the axial fan 30 of the aeraulic device 1 according to the circuit F of the arrows in Figure 2.
With reference to all embodiments, the mixing of internal air generated by the at least one aeraulic device 1, through the openings 18, is capable to equalize the temperature TA [°C] of the internal room 100 and limit energy consumption by going to use the energy stored in the air stratified in the upper volume or plenum 20 above the false ceiling 20.
The technical solution subject of the present invention is also further advantageous because it allows the use of simpler and lighter radiant panels 12 without the need for an insulating layer on the opposite face to the face facing the internal room 100, or advantageously allows the thermal insulating layer to be replaced by an acoustic insulating layer.
With particular reference to Figure 3, in a further alternative embodiment form of the aeraulic device 1 and radiant ceiling thermal system 10 subject of the present invention, the internal volume or plenum 20 can advantageously be realized inside to the plurality of radiant panels 12 forming the ceiling 14, arranged between the exposed surface in contact with the heat carrier fluid pipeline 15 and an insulating layer 42. In this particular embodiment, the aeraulic device 1 can have the size and the structure of a traditional radiant panel 12, comprising pipeline 15 and hydraulic connecting means to the other radiant panels 12 in such a way as to be integrated into the structure of the radiant surface or false ceiling 14.
The aeraulic device 1 can also comprise an insulating layer 42 arranged in contact with or opposite to the part containing the pipeline 15 with the inner volume or plenum between the pipeline and the insulating layer 42, as in the example in Figure 3.
This embodiment is advantageously applicable on installations in which the upper volume or plenum 20 has considerable dimensions for which an efficient recirculation flow of internal air would not be achievable.
In this case, the aeraulic devices 1 convey air drawn from the internal room 100 into the upper volume or plenum 20 arranged between the pipeline 15 of the false ceiling 14 and an insulating layer 42 and then feed it back into the internal room. The recirculation airflow shown in Figure 3 with circuit F of arrows also allows the stored stratified thermal (or cooling) energy in the upper volume or plenum 20 to be collected.
This solution, in addition to allowing a uniformity of the temperature TA [°C] of the internal room 100, allows energy saving by avoiding mixing of the internal air of rooms in very high ceilings or vaults, also allowing the use of an insulating layer 42 and a less thick insulating surface 44, thus advantageously allowing the addition of, for example, other layers of sound insulation while at the same time maintaining compact radiant panel dimensions 12.
The management of the speed of the fans 30 of the aeraulic device 1 by means of an electrical or electronic system allows to realize a mixing system that can be manually controlled or automatically operated by a desired operating logic.
The above operation considerations, carried out by considering the embodiments of the radiant ceiling thermal system 10 in an exemplary starting condition as in Figure 5, in the case of a traditional radiant system operating in heating mode, will result obviously applicable to a person skilled in the art also considering an exemplary starting condition as in Figure 6, in the case of a traditional radiant system operating in cooling mode.
It will also obviously result to the person skilled in the art that in cooling operation mode, the radiant system 10 subject of the present invention also comprises a dehumidifier device for lowering the humidity level of the air in the internal room 100.
As can be seen from the foregoing are evident the advantages that the aeraulic device 1 and the radiant ceiling thermal system 10 subject of the present invention achieve.
The aeraulic device and the radiant ceiling thermal system 10 subject of the present invention are particularly advantageous because thanks to the mixing the internal air of a room, it allows the improvement of living comfort and equalizes the temperature of the internal room by avoiding stratification of air at different temperatures and reducing energy consumption. Mixing enhances convective motions that are already naturally present, extending them to areas of the radiant ceiling thermal system with high energy potential that would otherwise be less involved. The increase in said motions allows an improvement in the convective heat transfer of the ceiling.
Further important advantage due to the aeraulic device 1 and radiant ceiling thermal system 10 is to provide the user with a simple, thin radiant panel, without the need for a layer with thermally insulating features or replaceable with an acoustic insulating layer or also having acoustic insulating features.
A further advantage of the radiant ceiling thermal system is to provide the user with a radiant ceiling thermal system 10 that can also be easily integrated even on pre-existing installations with very high ceilings or vaults.
Although the invention has been described above with particular reference to several preferred embodiments, given for illustrative and non-limiting purposes, numerous modifications and variations will become apparent to a person skilled in the art in the light of the above description. The present invention is therefore intended to embrace all modifications and variations falling within the scope of the following claims.

Claims

1. An aeraulic device (1, 1') for ceiling radiant thermal systems (10) of an internal room (100) comprising a case body (2) having an inlet opening (3) and an outlet opening (4) and at least a fan (30), housed internally in said case body (2) and configured to move an airflow between said inlet opening (3) and outlet opening (4); characterized in that said aeraulic device (1, 1') is configured and suitable to be arranged in an upper volume or plenum (20) of the internal room (100) above the false ceiling (14) of said radiant system (10) and wherein said inlet opening (3) and outlet opening (4) are configured and suitable to be placed in fluid connection with said internal room (100) and said upper volume or plenum (20) in cooperation with at least two openings (18) of the false ceiling (14), in such a way that said fan (30) is capable to generate a flow of air mixing between said internal room (100) and said upper volume or plenum (20).
2. The aeraulic device (1, 1') according to claim 1, wherein said inlet and outlet openings (3, 4) are formed on the surfaces of said case body (2) and are suitable to define a linear direction or an angled direction of air flow.
3. The aeraulic device (1, G) according to claim 1, wherein said inlet and outlet openings (3, 4) are provided with connecting means to the openings (18) of said ceiling (14), such as elbows or connector pipes.
4. The aeraulic device (1, T) according to claim 1, comprising, at said inlet and outlet openings (3, 4), diverting and conveying means (5) of the airflow selected from the group comprising: vanes, conveyors, a plurality of slits directly formed into the case body (2).
5. The aeraulic device (1, 1') according to claim 1, comprising a filter element (6) suitable for removing dust and particles present in the air.
6. The aeraulic device (1, T) according to claim 1, comprising an air sanitizing device
(7)·
7. The aeraulic device (1, T) according to claim 1, comprising a thermo-acoustic insulation or sound-absorbing insulation material layer (8) arranged internally or externally to said case body (2).
8. A radiant ceiling thermal system (10) for heating and cooling of an internal room (100) comprising:
- one or more radiant panels (12) connectable together to form a radiant false ceiling (14);
- an upper volume or plenum (20) of said internal room (100); wherein said false ceiling (14) is provided with at least two openings (18) suitable for placing in fluid connection said internal room (100) with said upper volume or plenum (20); characterized in that it comprises at least one aeraulic device (1, T) according to at least one of claims 1 to 7, arranged above said false ceiling (14) between said internal room (100) and said upper volume or plenum (20), said aeraulic device (1, T) being suitable for circulating air in such a manner as to mix said internal air in circulation through said openings (18).
9. The radiant ceiling thermal system (10) according to claim 8, wherein said at least two openings (18) are formed directly on two or more radiant panels (12).
10. The radiant ceiling thermal system (10) according to claim 8, wherein said at least two openings (18) are defined by an absence or by an array interruption of the radiant panels (12) on the false ceiling (14).
11. The radiant ceiling thermal system (10) according to claim 8, wherein said at least one circulating aeraulic device (1, T) is arranged with the inlet opening 3 or the outlet opening 4 placed at said at least two openings (18) and configured in such a manner as to move the inlet and outlet internal air into the upper volume or plenum (20).
12. The radiant ceiling thermal system (10) according to claim 8, comprising a support structure (16) of the false ceiling (14) suitable for fixing said panels to the load-bearing surfaces of the internal space (100) and configured in such a manner as to define the vertical height of said volume or plenum (20).
13. The radiant ceiling thermal system (10) according to claim 12, wherein said support structure (16) is provided by the rigid frame of radiant panels (12) interconnect to each other and to the surface of the upper slab (102) or to walls of the internal room (100).
14. The radiant ceiling thermal system (10) according to claim 12, wherein said support structure (16) is independent of the radiant panels (12) and fixed to the load-bearing structure of the internal room (100).
15. The radiant ceiling thermal system (10) according to claim 8, further comprising additional aeraulic devices (T) of deferral configured to maintain the flow of circulating internal air in the internal volume or plenum (20).
16. The radiant ceiling thermal system (10) according to claim 8, wherein said upper volume or plenum (20) is defined from and integrated directly within the connected radiant panels (12), said upper volume or plenum (20) being disposed between a pipeline (15) support surface of the heat carrier fluid and a thermal insulating layer (42) suitable for defining a thermal insulating surface (44) in cooperation with a plurality of radiant panels
(12).
17. The radiant ceiling thermal system (10) according to any of the previous claims 8 to 16, wherein the radiant surface 14 is provided with an acoustic insulation layer or multilayer insulation with acoustic insulation features.
18. The radiant ceiling thermal system (10) according to any one of the previous claims
8 to 17, wherein said at least one aeraulic device (1, T) is fixed on said false ceiling (14) by means of an adjustable support frame so as to direct the flow of internal air or are placed in cooperation with conveyor elements configured for directing the flow of internal air.
19. The radiant ceiling thermal system (10) according to any of the previous claims 8 to 18, comprising a fan control system (30) of the at least one aeraulic device (1, T) controlled by a logic unit for continuous or intermittent operation.
20. The radiant ceiling thermal system (10) according to any one of the previous claims 8 to 19, wherein the false ceiling (14) having an exposed surface in direct contact with the internal room (100) comprises a smooth or microperforated finish and can be made of metal material, plasterboard, or other compatible building materials.
EP22748070.4A 2021-07-09 2022-07-05 Aeraulic device and radiant ceiling thermal system with internal air mixing Pending EP4367444A1 (en)

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