EP3951272A1 - Système de climatisation - Google Patents

Système de climatisation Download PDF

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Publication number
EP3951272A1
EP3951272A1 EP21189332.6A EP21189332A EP3951272A1 EP 3951272 A1 EP3951272 A1 EP 3951272A1 EP 21189332 A EP21189332 A EP 21189332A EP 3951272 A1 EP3951272 A1 EP 3951272A1
Authority
EP
European Patent Office
Prior art keywords
additional
mouth
flow
inner compartment
qin
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
EP21189332.6A
Other languages
German (de)
English (en)
Inventor
Gaetano LICCIARDELLO
Roberto Torcoli
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.)
Enolgas Bonomi SpA
Original Assignee
Enolgas Bonomi 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 Enolgas Bonomi SpA filed Critical Enolgas Bonomi SpA
Publication of EP3951272A1 publication Critical patent/EP3951272A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/00075—Indoor units, e.g. fan coil units receiving air from a central station
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • 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
    • F24F1/01—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air

Definitions

  • the present invention is in the field of devices for the thermal conditioning of civil or industrial spaces, such as homes, offices, premises for production activities, etc.
  • An example of an air conditioning device is illustrated in WO-A1-2014/111742 , according to which, however, air is fed into the device via a motor.
  • the object of the present invention is to overcome this drawback; in particular, according to the invention, the CMV apparatus is used simultaneously in the implementation of a heating or cooling system, avoiding the need to implement them separately.
  • 1 denotes a room in a building, having an indoor environment 2.
  • the room is served by a controlled mechanical ventilation apparatus (CMV apparatus 4) adapted to forcibly feed a predefined incoming air flow Qin to the indoor environment 2 and to forcibly draw a predefined outgoing air flow Qout from the indoor environment 2.
  • CMV apparatus controlled mechanical ventilation apparatus
  • Said apparatus comprises filtration means to filter incoming or outgoing air, and exchanger means to exchange heat between incoming or outgoing air flows and outgoing or incoming air flows, respectively.
  • the CMV apparatus 4 comprises a ventilation device 6, generally affixed to a wall of the building and comprising a motorized fan, an air inlet duct 8, operatively connected to the outflow of the fan for the forced intake of air from the outside environment to the indoor environment 2, and an air outlet duct 10, operatively connected to the intake of the fan for the forced extraction of air from the indoor environment 2 to the outside environment.
  • a ventilation device 6 generally affixed to a wall of the building and comprising a motorized fan, an air inlet duct 8, operatively connected to the outflow of the fan for the forced intake of air from the outside environment to the indoor environment 2, and an air outlet duct 10, operatively connected to the intake of the fan for the forced extraction of air from the indoor environment 2 to the outside environment.
  • the CMV apparatus 4 is coupled to a thermal conditioning device 20 applicable to the air inlet duct 8 of the CMV apparatus 4, adapted to draw in a predetermined additional air flow Q' from the indoor environment 2 of the room 1 by means of a Venturi effect activated by the incoming air flow Qin of the CMV apparatus 4, combining it with said incoming air flow Qin of the CMV apparatus 4 and feeding, into the indoor environment 2, a total air flow Qtot after conditioning it, i.e., after heating or cooling it.
  • the device 20 exploits a negative pressure activated by the incoming air flow Qin of the CMV apparatus 4 to draw in an additional flow Q'in coming from the indoor environment 2 and is able to feed into the indoor environment 2 a total air flow Qtot, after heating or cooling it, as required.
  • the device 20 is part of an apparatus 100 for the thermal conditioning of a room comprising, in addition to said device 20, a generator device 102 adapted to heat or cool a carrier fluid Fv, e.g., water, by an energy transformation, e.g., by electrical energy transformation, by combustion of gas, diesel, or other hydrocarbons, or by heat exchange.
  • a generator device 102 adapted to heat or cool a carrier fluid Fv, e.g., water, by an energy transformation, e.g., by electrical energy transformation, by combustion of gas, diesel, or other hydrocarbons, or by heat exchange.
  • the generator device 102 is a boiler or heat pump or is an exchanger connected to a district heating or cooling system.
  • the generator device 102 is operatively connected to the device 20 via a carrier duct 103, comprising a forward branch 104, through which hot or cold carrier fluid Fv is sent to the device 20, and a return branch 106, through which thermally depleted carrier fluid Fv returns from the device 20 to the generator device 102.
  • the apparatus 100 further comprises typically electronic management means 110, comprising, for example, a circuit board or microchip, operatively connected to the device 20 and to the generator device 102, to control their actuation based on the processing of received signals.
  • typically electronic management means 110 comprising, for example, a circuit board or microchip, operatively connected to the device 20 and to the generator device 102, to control their actuation based on the processing of received signals.
  • the apparatus 100 comprises:
  • the device 20 comprises a casing 22 delimiting an inner compartment 24 and is provided with an inlet mouth 26 for connecting the air inlet duct 8 of the CMV apparatus 4 that supplies the incoming air flow Qin.
  • the inlet mouth 26 is obtained through a side wall 22a of the casing 22.
  • the device 20 further comprises an additional mouth 28 connectable to the inner compartment 24, for suctioning the additional flow Q'in from the indoor environment 2 of the room 1; preferably, said additional mouth 28 is obtained through the casing 22, and in particular through a front wall 22b of said casing 22, preferably at a height corresponding to that of the inlet mouth 26.
  • the device 20 further comprises a shutter assembly 30 adapted to open or close on command the additional mouth 28, to allow or prevent the intake of air from the indoor environment 2 to the inner compartment 24, respectively.
  • the shutter assembly 30 is operatively connected, for example electrically, to the management means 110 of the apparatus 100.
  • the shutter assembly 30 comprises a plurality of movable, e.g., rotatable, shutter flaps 32, which, in a closed configuration, obstruct the additional mouth 28 and, in an open configuration, at least partially release said additional mouth 28.
  • the shutter assembly 30, comprising, for example, an actuator, such as an electric motor, connected to said shutter flaps 32, is controllable by the management means 110 that control said actuator to bring the shutter flaps 32 from the closed configuration to the open configuration and, preferably, vice versa.
  • the outlet mouth 40 is formed through the front wall 22b of the casing 22, spaced apart from the additional mouth 28.
  • the device 20 further comprises a nozzle assembly 50, connected to the inlet mouth 26, which is adapted to receive the incoming flow Qin, accelerate it, and feed it into the inner compartment 24 to create a negative pressure in at least one region 52 of said inner compartment 24, flanked by the additional mouth 28, for example in the direction of the thickness of the casing 22.
  • a nozzle assembly 50 connected to the inlet mouth 26, which is adapted to receive the incoming flow Qin, accelerate it, and feed it into the inner compartment 24 to create a negative pressure in at least one region 52 of said inner compartment 24, flanked by the additional mouth 28, for example in the direction of the thickness of the casing 22.
  • the nozzle assembly 50 is received in the casing 22 and comprises a distribution duct 54 into which the inlet mouth 26 flows, having a main extension along a transverse direction Y, preferably open at the top, and a nozzle 56 that surmounts the distribution duct 54, configured to receive the low speed incoming flow Qin and provided with a plurality of ports 58, preferably open at the top of the nozzle 56 and distributed transversely.
  • Said ports 58 collectively form a narrowing of the passage section of the incoming flow Qin and thus cause high speed air to escape into the region 52, which will experience a negative pressure. Said negative pressure draws, through the additional mouth 28, the additional flow Q'in when the shutter assembly 30 is in the open configuration.
  • the nozzle 56 comprises a transversely extending profile 60 having longitudinally a cross section converging toward a base 62 through which the ports 58 are formed.
  • the longitudinal cross section of the profile 60 is trapezoidal, wherein the major base is located above the distribution duct 54 and the minor base forms said base 62 for the ports 58.
  • the device 20 comprises an exchanger 70, housed in the casing 22, operatively located between the additional mouth 28 and the outlet mouth 40 to condition the air flow passing through the inner compartment 24 between said mouths 28, 40.
  • the exchanger 70 is configured to cooperate with the generator device 102, for example through the carrier duct 103.
  • the heat exchanger 70 comprises a heat exchanger body 72 for example made in one piece of a highly thermally conductive material, for example, aluminum, preferably extruded, traversed by the carrier duct 103 and provided with surfaces placed in contact with said carrier duct 103 to achieve a heat exchange.
  • a heat exchanger body 72 for example made in one piece of a highly thermally conductive material, for example, aluminum, preferably extruded, traversed by the carrier duct 103 and provided with surfaces placed in contact with said carrier duct 103 to achieve a heat exchange.
  • the exchanger body 72 comprises a plurality of exchange fins 74, for example having a mainly longitudinal extension and being placed transversely side by side to one another, between which the carrier duct 103 forms a coil.
  • the carrier duct 103 has a circular cross section; according to a further embodiment, the carrier duct 103 has an oblong cross section in contact with the exchanger body 72 so as to maximize the extent of the contacting surfaces.
  • the heat exchanger body 72 is in contact with the front wall 22b of the casing 22; during operation of the device, the hot or cold heat exchanger body heats or cools the front wall 22b of the casing 22, thereby also contributing to conditioning the indoor environment via conduction.
  • the first temperature detection means 120 detect a temperature in the indoor environment 2 of the room 1 greater than a predetermined threshold temperature and transmit the corresponding temperature signal Ts to the management means 110.
  • the management means 110 based on a processing of the temperature signal Ts, and preferably the temperature signal Ts', control the shutter assembly 30 of the additional mouth 28 to bring it or keep it in the closed configuration, in which it closes said additional mouth 28, and deactivates the generator device 102 or keeps it deactivated, whereby the exchanger 70 is unable to heat or cool any air flow.
  • the CMV apparatus 4 continues to operate by feeding an incoming air flow Qin into the air inlet duct 8.
  • the incoming flow Qin enters the device 20, flows through the inner compartment 24, and flows through the exchanger 70, but is neither heated nor cooled appreciably because the generating device 102 is deactivated.
  • the incoming flow Qin therefore flows out of the outlet mouth 40 into the indoor environment 2.
  • the temperature detecting means 120 detect a temperature in the indoor environment 2 of the room 1 that is lower than a predefined threshold temperature and transmit the corresponding temperature signal Ts to the management means 110.
  • the management means 110 based on a processing of the temperature signal Ts, and preferably the temperature signal Ts', control the shutter assembly 30 of the additional mouth 28 to bring it or keep it in the open configuration, wherein the additional mouth 28 is open, and activates the generator device 102 or keeps it activated, whereby the exchanger 70 is able to heat or cool an air flow.
  • the CMV apparatus 4 continues to operate by feeding an incoming air flow Qin into the air inlet duct 8.
  • the incoming flow Qin enters the device 20 from the inlet mouth 26, flows through the distribution duct 54 at low speed, flows through the nozzle 56, and exits the ports 58 at high speed, causing a negative pressure in at least one region 52 of the inner compartment 24 adjacent to the additional mouth 28.
  • the additional flow Q'in is thus drawn into the inner compartment 24, which is combined with the incoming flow Qin.
  • a flow Qtot Qin + Q'in, e.g., equal to 100 m 3 /h, heated or cooled, is fed into the indoor environment 2.
  • the above-described device overcomes the drawbacks discussed above with reference to the prior art in that, by integrating a CMV apparatus with a thermal conditioning apparatus, labor and component costs may be reduced.
  • this device exploits the pressure generated by the CMV apparatus to create air circulation in the indoor environment without the aid of additional fans.
  • the device according to the invention allows, when no heating or cooling is required, for only the air flow coming from the CMV apparatus to be sent into the indoor environment, avoiding sending a flow that is oversized for the volume of the indoor environment, which would cause discomfort.
  • the additional flow is drawn into the inner compartment by the incoming flow, without said incoming flow having undergone thermal conditioning.
  • this allows the negative pressure generated by the incoming flow to be fully utilized to draw in an elevated additional flow.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Central Air Conditioning (AREA)
EP21189332.6A 2020-08-04 2021-08-03 Système de climatisation Pending EP3951272A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202000019174 2020-08-04

Publications (1)

Publication Number Publication Date
EP3951272A1 true EP3951272A1 (fr) 2022-02-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21189332.6A Pending EP3951272A1 (fr) 2020-08-04 2021-08-03 Système de climatisation

Country Status (1)

Country Link
EP (1) EP3951272A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1197996A (en) * 1966-09-09 1970-07-08 Luwa Ag Induction Air-Conditioning Apparatus
GB1603021A (en) * 1977-04-02 1981-11-18 Ltg Lufttechnische Gmbh Work table
EP0967444A2 (fr) * 1998-06-23 1999-12-29 Stifab Farex AB Dispositif pour la ventilation, le refroidissement et /ou le chauffage de locaux
CA2488276A1 (fr) * 2002-06-03 2003-12-11 Rubitherm Gmbh Procede de chauffage et de refroidissement d'une piece et d'un batiment comprenant plusieurs pieces
WO2014111742A1 (fr) 2013-01-21 2014-07-24 Carrier Corporation Terminal d'air avancé
WO2019239050A1 (fr) * 2018-06-14 2019-12-19 Valeo Systemes Thermiques Boiter destine a etre monte sur une portiere de vehicule automobile et portiere comprenant un tel boitier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1197996A (en) * 1966-09-09 1970-07-08 Luwa Ag Induction Air-Conditioning Apparatus
GB1603021A (en) * 1977-04-02 1981-11-18 Ltg Lufttechnische Gmbh Work table
EP0967444A2 (fr) * 1998-06-23 1999-12-29 Stifab Farex AB Dispositif pour la ventilation, le refroidissement et /ou le chauffage de locaux
CA2488276A1 (fr) * 2002-06-03 2003-12-11 Rubitherm Gmbh Procede de chauffage et de refroidissement d'une piece et d'un batiment comprenant plusieurs pieces
WO2014111742A1 (fr) 2013-01-21 2014-07-24 Carrier Corporation Terminal d'air avancé
WO2019239050A1 (fr) * 2018-06-14 2019-12-19 Valeo Systemes Thermiques Boiter destine a etre monte sur une portiere de vehicule automobile et portiere comprenant un tel boitier

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