EP2639519A1 - Lüftungsgerät mit interner Heizung - Google Patents

Lüftungsgerät mit interner Heizung Download PDF

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Publication number
EP2639519A1
EP2639519A1 EP13154233.4A EP13154233A EP2639519A1 EP 2639519 A1 EP2639519 A1 EP 2639519A1 EP 13154233 A EP13154233 A EP 13154233A EP 2639519 A1 EP2639519 A1 EP 2639519A1
Authority
EP
European Patent Office
Prior art keywords
ventilation device
housing
heat
heating means
exchanging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13154233.4A
Other languages
English (en)
French (fr)
Other versions
EP2639519B1 (de
Inventor
Luc Louis Renson
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.)
Vero Duco NV
Original Assignee
Vero Duco NV
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 Vero Duco NV filed Critical Vero Duco NV
Publication of EP2639519A1 publication Critical patent/EP2639519A1/de
Application granted granted Critical
Publication of EP2639519B1 publication Critical patent/EP2639519B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24F7/00—Ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/002—Air heaters using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • 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
    • F24F2007/0025—Ventilation using vent ports in 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
    • F24F7/00—Ventilation
    • F24F2007/004—Natural ventilation using convection
    • 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
    • F24F2221/34—Heater, e.g. gas burner, electric air heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0052—Details for air heaters
    • F24H9/0057—Guiding means
    • F24H9/0063—Guiding means in air channels

Definitions

  • the invention relates to a passive ventilation device for use in a building, comprising a housing, a ventilation passage which extends through the housing between an inlet of the housing which is to be turned towards the exterior of the building and an outlet of the housing to be turned towards the interior of the building in order to provide an airflow between the inlet and the outlet, a flap for closing or opening the ventilation passage, as well as a heating means incorporated in the housing.
  • Such a ventilation device is known from DE-A-3419001 .
  • this known ventilation device On the side turned towards the interior of the building, this known ventilation device has a grate comprising grate openings via which the outside air can flow into the building.
  • a heating foil is attached to the inner surface of the grate. By applying an electrical voltage across said heating foil, the temperature of the foil and of the grate increases, as a result of which the air is heated before flowing into a building via the grate. This is intended to prevent draughts and/or cold air streams.
  • the heating foil covers a part of the grate openings, which adversely affects the ventilation capacity. If desired, openings can be made in the foil, but this is a difficult operation which also carries the risk that the foil is damaged to such a degree that it no longer functions well.
  • a further important drawback is that the grate itself also becomes hot. Since the grate is freely accessible from the space in the building, there is a risk that the user may bum himself when operating the ventilation device.
  • a further ventilation device is known from DE-U-20110569 .
  • This is configured as a piece of pipe inside which an electrical heating resistor is suspended.
  • This piece of pipe may be configured to be thermally insulated, so that it does not heat up, or only to a limited degree. Thus, the air is only heated along the free surface of the heating resistor, as a result of which the heating capacity is limited.
  • US-A-2100/0143643 discloses a ventilation port for a closable cooling device.
  • a heating system is provided with the aim of preventing the closure element from freezing onto said cooling device.
  • Said heating system is fitted to a heat-conducting support, so that the heat can readily heat the flap and the flap seat of the closure element.
  • This object is achieved by the heating means being suspended from a thermally insulated support means and by the heating means having heat-exchanging surfaces facing away from each other, preferably two of such heat-exchanging surfaces.
  • the ventilation device can heat the incoming air before it reaches the space in question, without the temperature of the housing increasing significantly.
  • the thermally insulated suspension ensures that the relatively high temperatures which the heating means has to reach to effectively heat the air, do not impact on the housing. Thus, the problem of the user burning himself is eliminated.
  • thermally insulated support means may be configured in many different ways.
  • the thermally insulated support means has a thermal conduction (W.m -1 .K -1 , watt per metre Kelvin) which is lower than that of the housing, given otherwise identical circumstances.
  • the desired thermal insulation of the heating means with respect to the housing can be achieved in different ways.
  • Such supports may be formed in many ways, depending on the internal configuration of the housing.
  • the supports comprise thermally insulated material which has a lower thermal conduction (W.m -1 .K -1 ) than metal, such as a plastic.
  • a thermal conduction at room temperature having a value of ⁇ 10 W.m -1 .K -1 , preferably ⁇ 1 W.m -1 .K -1 is mentioned.
  • the heating means furthermore preferably has two heat-exchanging surfaces facing away from each other. Due to the orientation of the heating means, the incoming air flows freely across both said surfaces in the transverse direction. Due to the spaced-apart supports, the air can flow both underneath and over the heating means, in such a way that it can be heated effectively. These heat-exchanging surfaces may run parallel to each other, but this is not obligatory.
  • the heating means may be configured in the form of a foil or sheet of electrically conductive material. Although the heating means may be flat, it does not have to be completely flat.
  • the heating means may have a partly or completely curved surface. The surface may also comprise small indentations or small projections.
  • an auxiliary profile may be provided from which the heating means is suspended. This auxiliary profile may itself also be heated by the heating means, and thus serve as a source of heat for the air flowing across it.
  • the ventilation device may have different shapes.
  • the ventilation device may have an elongate housing which defines a longitudinal direction x, a vertical direction z at right angles to the longitudinal direction and a transverse direction y at right angles to the longitudinal direction and vertical direction, which housing comprises mutually coupled profiles which are directed in the longitudinal direction.
  • the heating means is situated inside the profiles defining the housing.
  • the ventilation device may be circular in shape in order to be accommodated in a hole in a façade.
  • At least one heat-exchanging surface extends in the transverse direction in such a manner that the incoming air can readily flow across it. Such a surface can also extend obliquely with respect to the transverse direction. At least one heat-exchanging surface may be straight in cross section or curved in cross section.
  • the heat-exchanging means is situated in the housing.
  • the user can no longer come into contact with the heating means, so that the risk of injury from burning is prevented.
  • the figure shows a variant of the ventilation device 1 which is constructed from a number of profiles which are coupled to one another, including the outer profile 5, the inner profile 8 and the connecting profiles 9, 10.
  • the inner profile 8 has a punched-out grate 11 and is attached to the top and bottom profiles 9, 10 by means of a click-action fastening 27, 28. Together, these profiles form the housing 12 of the ventilation device.
  • the ventilation passage 13 extends through this housing 12 between the inlet 15 and the outlet 16.
  • the ventilation passage 13 can be closed by means of the flap 14 which is rotatably suspended from the bottom inner profile 8.
  • the ventilation device 1 forms the connection between the exterior 17 and the interior 18 of the building and, when the flap 14 is open, supplies fresh outside air to the space which is situated in the interior of the building.
  • an unpleasant cold draught may be caused in said space.
  • an auxiliary profile 19 with a heating foil 20 is attached on the side of the housing 12 facing the outlet.
  • said heating foil can be heated electrically.
  • the outside air originating from the outlet 16 and flowing past the heating foil can then be heated to such a temperature that no unpleasant draught or cold air stream results in the space to be aerated.
  • the action of the ventilation device is not affected, or hardly at all, by the advantageous arrangement of the heating system parallel to the direction of flow.
  • the desired ventilation of the space situated behind it can also be ensured at relatively low outside temperatures.
  • the auxiliary assembly 26 consisting of the auxiliary profile 19 and the heating foil 20 is supported in the centre of the housing 12 by supports 31 which are spaced apart from each other. Said supports preferably consist of heat-resistant plastic and insulate the heating means 19, 20 with respect to the various profiles of the housing. Due to this arrangement of the heating means 19, 20, the air can flow along both surfaces thereof running in the transverse direction, as a result of which an optimum exchange of heat is effected. On the top surface, the air flows directly along the heating foil 20 itself. This heating foil 20 also heats the auxiliary profile 19, so that the air which flows along the underside is heated by said auxiliary profile. If desired, a second heating foil 20' may be arranged along the underside of the auxiliary profile in order to heat the air flowing along the underside.
  • Ventilation device Façade 3. Casing 4. Ceiling 5., 6. Outer profile 7., 8. Inner profile 9., 10. Connecting profile 11. Inner grate 12. Housing 13. Ventilation passage 14. Flap 15. Inlet 16. Outlet 17. Building exterior 18. Building interior 19. Auxiliary profile 20., 20'. Heating foil 21. Housing attachment means 22. Housing attachment means 26. Auxiliary assembly 27., 28. Click-action fastening 31. Heating means support 32. Sound-insulating material

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Central Heating Systems (AREA)
  • Building Environments (AREA)
EP13154233.4A 2012-03-14 2013-02-06 Lüftungsgerät mit interner Heizung Active EP2639519B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2008487A NL2008487C2 (nl) 2012-03-14 2012-03-14 Ventilatie-inrichting met interne verwarming.

Publications (2)

Publication Number Publication Date
EP2639519A1 true EP2639519A1 (de) 2013-09-18
EP2639519B1 EP2639519B1 (de) 2018-01-31

Family

ID=47630217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13154233.4A Active EP2639519B1 (de) 2012-03-14 2013-02-06 Lüftungsgerät mit interner Heizung

Country Status (2)

Country Link
EP (1) EP2639519B1 (de)
NL (1) NL2008487C2 (de)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB556037A (en) * 1941-08-29 1943-09-17 Hugh Stanley Ellis Improvements in or relating to ventilators
GB1488983A (en) * 1974-10-24 1977-10-19 Eberspaecher J Ventilating device for the ventilation of spaces such as rooms
DE3419001A1 (de) 1984-05-22 1985-11-28 Eberbach GmbH & Co, 6340 Dillenburg Belueftungseinrichtung mit luftvorwaermung
DE4143036A1 (de) * 1991-12-24 1993-07-01 Otto Feyer Belueftungseinrichtung fuer raeume
GB2304404A (en) * 1995-08-15 1997-03-19 Aztec Air vent with planar electric heating element
DE20110569U1 (de) 2001-06-26 2001-09-06 Msr Service Gmbh Geräuschlose Belüftung von Räumen mit Frischluft durch "Thermische Lüftungsanlage"
US20110143643A1 (en) 2009-12-10 2011-06-16 Thomas Graham Vent port for a refrigerated cabinet

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB556037A (en) * 1941-08-29 1943-09-17 Hugh Stanley Ellis Improvements in or relating to ventilators
GB1488983A (en) * 1974-10-24 1977-10-19 Eberspaecher J Ventilating device for the ventilation of spaces such as rooms
DE3419001A1 (de) 1984-05-22 1985-11-28 Eberbach GmbH & Co, 6340 Dillenburg Belueftungseinrichtung mit luftvorwaermung
DE4143036A1 (de) * 1991-12-24 1993-07-01 Otto Feyer Belueftungseinrichtung fuer raeume
GB2304404A (en) * 1995-08-15 1997-03-19 Aztec Air vent with planar electric heating element
DE20110569U1 (de) 2001-06-26 2001-09-06 Msr Service Gmbh Geräuschlose Belüftung von Räumen mit Frischluft durch "Thermische Lüftungsanlage"
US20110143643A1 (en) 2009-12-10 2011-06-16 Thomas Graham Vent port for a refrigerated cabinet

Also Published As

Publication number Publication date
EP2639519B1 (de) 2018-01-31
NL2008487C2 (nl) 2013-09-18

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