EP0663571A2 - Dispositif de refroidissement par convection - Google Patents

Dispositif de refroidissement par convection Download PDF

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Publication number
EP0663571A2
EP0663571A2 EP94120256A EP94120256A EP0663571A2 EP 0663571 A2 EP0663571 A2 EP 0663571A2 EP 94120256 A EP94120256 A EP 94120256A EP 94120256 A EP94120256 A EP 94120256A EP 0663571 A2 EP0663571 A2 EP 0663571A2
Authority
EP
European Patent Office
Prior art keywords
cladding
cooling element
longitudinal
heat exchanger
element according
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.)
Withdrawn
Application number
EP94120256A
Other languages
German (de)
English (en)
Other versions
EP0663571A3 (fr
Inventor
Hans Dipl.-Ing. Leyer
Detlef Dipl.-Ing. Makulla
Jürgen Dipl.-Ing. Nickel
Franc Dr. Ing. Sodec
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.)
Krantz TKT GmbH
H Krantz TKT GmbH
Original Assignee
Krantz TKT GmbH
H Krantz TKT GmbH
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 Krantz TKT GmbH, H Krantz TKT GmbH filed Critical Krantz TKT GmbH
Publication of EP0663571A2 publication Critical patent/EP0663571A2/fr
Publication of EP0663571A3 publication Critical patent/EP0663571A3/fr
Withdrawn legal-status Critical Current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
    • F24F1/01—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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • 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
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at 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
    • 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

Definitions

  • the invention relates to a convective cooling element which has an elongated, cuboid cladding to be arranged horizontally in the area of a ceiling. This can be flowed through perpendicularly to its longitudinal axis by an air stream and is provided with inlet and outlet openings are connected.
  • the inlet openings are defined by the distances between the longitudinal side walls and the heat exchanger fins and the outlet openings by openings provided below the heat exchanger fins in the cladding.
  • Such cooling elements are generally known and serve to cool rooms by extracting heat from the room air passed through the cooling elements and dissipating them in this way.
  • the warm air introduced via the inlet openings in the cladding of such a cooling element is cooled by the heat exchanger fins and enters the room by gravity through the outlet openings arranged below the heat exchanger fins in the cladding of the cooling element.
  • the cooled air tends to flow into the room at a relatively high speed, causing drafts, particularly in the area under the cooling elements.
  • the expert is therefore of the opinion that such cooling elements only prevent the occurrence of draft and cold fall if the cladding comprises a closed floor profile.
  • Known cooling elements therefore preferably each have a gap provided in the longitudinal side walls of the cladding, which extends continuously over the entire length of the cooling element. But also the Cold air flows emerging from the cooling element on both sides tend to fall into the room at a high speed and to reach the lounge area before the cold air supplied has been sufficiently mixed with the room air.
  • the invention is based on the object of proposing a convective cooling element of the type described at the outset, which makes it possible to introduce relatively large cold air volume flows per unit of time draft-free into the lounge area of a room to be cooled.
  • the distribution device which deflects the cold air flow and fans it out into individual flows, these mix intensively with the room air before the air mixture reaches the lounge area.
  • the proportion of cold air in the air mixture the flow rate of which has already been considerably reduced by the mixing, no longer has the effect that drafts or cold falls can occur, especially since the temperature of the air mixture is higher than the temperature of the cold air emerging directly from the cooling element.
  • the distribution device is formed by a closed cladding base which deflects the cooled air flow horizontally in two opposite directions and by a series of rectangular outlet openings provided in each longitudinal side wall of the cladding and reaching down to the cladding base.
  • the cooled air flow is initially divided into two horizontal partial air flows with opposite flow directions.
  • the two partial air flows are divided into a large number of individual flows through the individual outlet openings in the longitudinal side walls of the cladding, which can mix much more intensively with the room air than partial air flows which exit through slots which extend continuously over the entire length of a cooling element.
  • the distribution device is formed by a deflection profile assigned to the cladding base and dividing it into two longitudinal halves, and by perforations provided in the cladding base.
  • the cooled air flow is divided into two diverging partial flows, whereby the individual jets emerging from the perforations provided in the cladding floor are also divided into two diverging groups.
  • the cooled air flow can have a draft-free effect over a large area.
  • the distribution device is formed by perforations provided at intervals along the length of the cladding between the heat exchanger fins and the swirl outlets arranged in the cladding floor and in the cladding side walls and / or in the cladding floor.
  • the swirl outlets which according to a further embodiment of the invention can face or face away from the heat exchanger fins with their outlet side and are connected to a supply air distribution pipe extending in the longitudinal direction of the cladding, allow the cooled air flow to be mixed intensively with supply air, before or immediately after the cooled airflow enters the room.
  • the supply air distribution pipe can also be divided into two longitudinal halves in a particularly advantageous manner, the swirl outlets being connected to one longitudinal half, while the other longitudinal half is provided with nozzles.
  • the swirl outlets and / or the nozzles not only increase the induction of the room air by the cooling fins, but also supply fresh air to the room at the same time.
  • the convection on the cooling fins is increased and the cooling capacity is increased considerably as a result.
  • the highly turbulent air jets from the swirl outlets considerably reduce the speed of the combined convective and forced flow.
  • an embodiment of the invention provides that the cladding encloses a supply air duct extending along its length, in the duct bottom of which is flush with the perforated cladding base, a series of induction nozzles is provided, the center axes of which alternately point in divergent directions.
  • This configuration makes it possible to superimpose the rays of the exiting cooled air stream with highly inductive rays which, due to their diverging alignment, can act on a large area without causing drafts.
  • the cooling element consists of an elongated cuboid cladding 1 which is arranged at a distance below a building ceiling 2 (FIGS. 10, 11), it being possible for a multiplicity of cooling elements of the same design to be part of a room ceiling which is not otherwise shown.
  • two pipes 3 which can preferably be made of copper, extend along the length of the cooling element at a parallel distance, through which cold water can flow. These penetrate vertically aligned heat exchanger fins 4, which are connected to the longitudinal side walls 5 of the cladding.
  • the heat exchanger fins 4 and the longitudinal side walls 5 delimit gap-shaped inlet openings 6 on the ceiling side of the cladding 1, through which warm air flows in and is cooled by the extensive contact with the heat exchanger fins 4.
  • the cooled air flow strikes a closed cladding base 7, is deflected horizontally and is introduced into the space to be cooled through outlet openings 8 provided in the two longitudinal side walls 5 and reaching down to the cladding base 7.
  • the longitudinal side walls 5 are not provided with outlet openings, but are closed.
  • a cladding floor 7 ' is provided with perforations, which form a plurality of outlet openings 9, through the cooled air in the form of vertical individual jets (FIG. 2) or in the form of diverging groups of individual jets (FIG. 3) into the space to be cooled reached.
  • the divergence of the radiation groups is shown by a cross section arranged on the cladding floor 7 ' pointed roof-shaped deflection profile 10, which divides the cladding floor 7 'into two longitudinal halves.
  • the lining base 7 'and also the longitudinal side walls 5' are provided with perforations 9 over their lower half.
  • the cooled air exiting through the perforations 9 is admixed with supply air which exits through swirl outlets 11 which, as shown in FIG. 7, are connected to a supply air distribution pipe 12 at intervals along its length.
  • the swirl outlets 11 are connected on the upper side to the supply air distribution pipe 12, so that the respective outlet cross section of these swirl outlets 11 faces the fins 4 and the cooled air flow is deflected horizontally by the supply air flow before it reaches the space to be cooled through the perforations 9.
  • the supply air distribution pipe 12 ' is divided by a separating plate 13 into two longitudinal halves 14 and 15, which can be blocked completely or partially from the supply air supply by a flap 16. While the swirl outlets 11 are connected to the lower longitudinal half 14, the upper longitudinal half 15 is provided with nozzles 17 pointing in the direction of the lamellae 4.
  • the cooling element shown in each case is divided vertically by a channel 18 into two longitudinal halves.
  • the channel 18 can be used to accommodate various supply lines, Sprinkler components, lighting devices and the like are used.
  • the channel 18 can also be used to fill an opening in an acoustic room partition 19, as shown in FIG. 11 in a vertical section.
  • the duct 18 ' can be designed as a supply air duct and, in its duct bottom 19 which is flush with the perforated cladding base 7', can have a series of induction nozzles 20, the center axes of which alternately point in divergent directions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Thermistors And Varistors (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
EP94120256A 1994-01-18 1994-12-21 Dispositif de refroidissement par convection. Withdrawn EP0663571A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9400738U DE9400738U1 (de) 1994-01-18 1994-01-18 Konvektives Kühlelement
DE9400738U 1994-01-18

Publications (2)

Publication Number Publication Date
EP0663571A2 true EP0663571A2 (fr) 1995-07-19
EP0663571A3 EP0663571A3 (fr) 1997-05-28

Family

ID=6903323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94120256A Withdrawn EP0663571A3 (fr) 1994-01-18 1994-12-21 Dispositif de refroidissement par convection.

Country Status (2)

Country Link
EP (1) EP0663571A3 (fr)
DE (1) DE9400738U1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608327A1 (de) * 1996-03-05 1997-09-11 Griepentrog Joachim Konvektor zum Kühlen und/oder Heizen eines Raumes
EP0849545A3 (fr) * 1996-12-19 1998-11-11 Kessler & Luch GmbH Plafond de refroidissement
WO1999026027A1 (fr) * 1997-10-31 1999-05-27 Abb Miljø As Procede et dispositif d'apport d'air de refroidissement
DE19934886C1 (de) * 1999-07-24 2001-03-01 Krantz Tkt Gmbh Deckenkonvektor
FR2833339A1 (fr) * 2001-12-10 2003-06-13 Bense Dominique Dispositif de traitement d'air
WO2005075897A1 (fr) * 2004-02-10 2005-08-18 Lindab Ab Dispositif d'alimentation d'air
GB2415247B (en) * 2004-06-18 2009-08-05 Halton Oy Supply air terminal device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19504931C2 (de) * 1995-02-15 2002-06-13 Bsata Marwan Einrichtung zur Kühlung und Entfeuchtung von Raumluft

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL276326A (fr) * 1961-03-23
SE461172B (sv) * 1987-08-31 1990-01-15 Novenco Ab Vaerme- eller kylanordning att anbringas vid tak
EP0508176B1 (fr) * 1991-04-12 1995-05-17 Kessler & Luch GmbH Structure pour évacuer des charges thermiques

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608327A1 (de) * 1996-03-05 1997-09-11 Griepentrog Joachim Konvektor zum Kühlen und/oder Heizen eines Raumes
DE19608327C2 (de) * 1996-03-05 2000-01-13 Joachim Griepentrog Konvektor zum Kühlen oder Heizen eines Raumes
EP0849545A3 (fr) * 1996-12-19 1998-11-11 Kessler & Luch GmbH Plafond de refroidissement
WO1999026027A1 (fr) * 1997-10-31 1999-05-27 Abb Miljø As Procede et dispositif d'apport d'air de refroidissement
DE19934886C1 (de) * 1999-07-24 2001-03-01 Krantz Tkt Gmbh Deckenkonvektor
EP1072846A3 (fr) * 1999-07-24 2002-04-17 KRANTZ-TKT GmbH Convecteur pour plafond
FR2833339A1 (fr) * 2001-12-10 2003-06-13 Bense Dominique Dispositif de traitement d'air
EP1319901A1 (fr) * 2001-12-10 2003-06-18 Dominique Bense Dispositif de traitement d'air
WO2005075897A1 (fr) * 2004-02-10 2005-08-18 Lindab Ab Dispositif d'alimentation d'air
GB2415247B (en) * 2004-06-18 2009-08-05 Halton Oy Supply air terminal device

Also Published As

Publication number Publication date
EP0663571A3 (fr) 1997-05-28
DE9400738U1 (de) 1994-03-10

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