EP3214253B1 - Ventilation device for a window - Google Patents

Ventilation device for a window Download PDF

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Publication number
EP3214253B1
EP3214253B1 EP17157746.3A EP17157746A EP3214253B1 EP 3214253 B1 EP3214253 B1 EP 3214253B1 EP 17157746 A EP17157746 A EP 17157746A EP 3214253 B1 EP3214253 B1 EP 3214253B1
Authority
EP
European Patent Office
Prior art keywords
ventilation device
heating resistor
window
outlet duct
ventilation
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.)
Active
Application number
EP17157746.3A
Other languages
German (de)
French (fr)
Other versions
EP3214253A1 (en
Inventor
Petri HÄNNINEN
Markus MADETOJA
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.)
Skaala Ifn Oy
Original Assignee
Skaala Ifn Oy
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 Skaala Ifn Oy filed Critical Skaala Ifn Oy
Publication of EP3214253A1 publication Critical patent/EP3214253A1/en
Application granted granted Critical
Publication of EP3214253B1 publication Critical patent/EP3214253B1/en
Active legal-status Critical Current
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
    • E06B7/10—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses by special construction of the frame members
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • 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

Definitions

  • the invention is related to the field of building technology and in particular to the implementation of mechanical ventilation.
  • Ventilation devices installable in a window and by means of windows equipped with a ventilation device it is possible to implement room-specific or decentralised ventilation in buildings.
  • Ventilation devices installable in a window and windows equipped with a ventilation device can either form a ventilation system in themselves or contribute jointly as part of a central ventilation system.
  • a central ventilation system would typically include at least centralised air exhaust through ceiling valves at least in the bathroom and toilet facilities and possibly also in the kitchen.
  • a decentralised or room-specific ventilation implemented by means ventilation devices installable in a window or windows equipped with a ventilation device is that for example in residential use it is possible to bring air taken from the outside into the interior in facilities where the users spend relatively much time.
  • ventilation is intensified locally by increasing the volume flow of a ventilation device installable in a window or of a window equipped with a ventilation device.
  • Such ventilation devices are typically kept operating continuously also in the winter. Because indoor air is warmer than outdoor air in a normal usage situation (where it is colder outdoors than indoors) and because some of the heat of indoor air is recovered in the exhaust air duct to the outdoor air travelling in the fresh air duct by using a heat exchanger, it is clear that when the indoor air cools, the accumulating condensation water needs to be treated in some way.
  • the applicant's Finnish patent 125451 describes a ventilation device used in connection with a window, which ventilation device comprises a collection trough for the collection of condensation water and an outlet tube for condensation water for the removal of condensation water through a condensation water removal hole.
  • the applicant's Finnish patent 126024 describes an arrangement for the removal of condensation water for example for a ventilation device usable in connection with a window.
  • the document FI 20 155 091 A shows a ventilation device for a window with a heat exchanger.
  • the objective of the invention is to improve the usage safety and operating reliability of the ventilation device.
  • the outlet duct comprises an outlet tube inside which is a heating resistor that follows the shape of the outlet tube.
  • a metal sleeve which is in a mechanical contact with the heating resistor for the collection of heat from the heating resistor in order to prevent the freezing of the mouth of the outlet duct.
  • the metal sleeve is inside the outlet tube in order to fasten the distal end of the heating resistor into place.
  • the sleeve By means of the sleeve, it is possible to better keep the mouth of the outlet duct unfrozen, which prevents freezing, improves the operating reliability of the ventilation device and at the same time also prevents the formation of icicles at sub-zero temperatures Celsius better than in the ventilation device described in the patent of prior art, which enhances the usage safety of the ventilation device.
  • the sleeve is of copper or other metal. At the moment, the sleeve is of copper due to its easy workability.
  • the sleeve could be implemented of aluminium, steel, even plastic or other material that conducts heat sufficiently well. It is sufficient that the sleeve material works as a sufficiently good heat conductor, in other words that its thermal conductivity is for example more than 100 W/mK.
  • the sleeve is inside the outlet duct fastening the distal end of the heating resistor into place. So it is possible to better ensure that the mouth of the outlet duct remains unfrozen.
  • the ohmic resistance of the heating resistor per a unit of length is advantageously greater at the metal sleeve than in the outlet duct before the sleeve.
  • a heating resistor with a total power of 12 W at the metal sleeve it is hence possible to dissipate for example 4 W of the heating power to the sleeve.
  • the heating power is hence spread over the area of the entire sleeve, contributing to the prevention of freezing of the mouth of the outlet tube.
  • the ohmic resistance of the heating resistor most advantageously decreases as the temperature decreases, in order to increase the heating power.
  • the heating power of the heating resistor increases as the temperature goes farther below zero degrees Celsius, in which situation there is typically also a greater need for the defrosting feature than at sub-zero temperatures Celsius closer to -0 °C.
  • the outlet duct advantageously runs over the entire distance between the heat exchanger and the mouth of the outlet duct inside the ventilation device and furthermore so that condensation water travels all the time downwards by gravitation and with an air flow.
  • the ventilation device has most advantageously been installed in the vertical frame of the window, for example from the side of an intermediate space, in other words in the part of the vertical frame remaining between the pane of the inner sash and the pane of the outer sash.
  • FIG 1 shows a perspective view of a ventilation window 1, to which a ventilation device 100 has been installed, viewed from the exterior U side.
  • the ventilation window 1 comprises a frame 2.
  • the ventilation window 1 comprises an outer sash 4 arranged in connection with the frame 2, to which outer sash 4 at least one pane 6 has been fastened, and an inner sash 3 arranged in connection with the frame 2, to which inner sash 3 at least one pane has been fastened.
  • the ventilation window 1 can have frame lining 9 to cover the frame 2 and the outer sash 4 from the exterior U side.
  • the outer sash 4 and the inner sash 3 have been fastened to the frame 2 or one of the sashes 3, 4 has been fastened to the frame 2 and the other sash 3, 4 has been fastened to a sash fastened to the frame 2.
  • an intermediate space 10 remains between the outer sash 4 and the inner sash 3.
  • the outer sash 4 and the inner sash 3 together define the light opening area 7.
  • the ventilation window 1 can be implemented without the intermediate space 10, in other words with one sash.
  • the ventilation device 100 equipped with a heat exchanger comprises an outlet duct forming a drain connection from the heat exchanger to the exterior U, which outlet duct 55 comprises an outlet tube 551, inside which is a heating resistor 552 that follows the shape of the outlet tube 551.
  • a sleeve 553 At the distal end of the outlet tube 551 is a sleeve 553 which is in a mechanical contact with the heating resistor for the collection of heat from the heating resistor 552 in order to prevent the freezing of the mouth of the outlet tube 551.
  • the outlet 54 of the exhaust air duct is above the outlet duct 55.
  • the heating resistor 552 is supplied from the electrical system of the ventilation device 100.
  • the sleeve 553 is inside the outlet tube 551, fastening the distal end of the heating resistor 552 into place.
  • the ohmic resistance of the heating resistor 552 per a unit of length is advantageously greater at the metal sleeve 553 than in the outlet tube before the sleeve 553.
  • the ohmic resistance of the heating resistor 552 decreases as the temperature decreases, in order to increase the heating power.
  • the outlet duct 55 runs most advantageously over the entire distance between the heat exchanger and the mouth of the outlet tube 551 inside the ventilation device 100 and furthermore so that condensation water travels all the time downwards by gravitation and with the air flow.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Description

    Field of invention
  • The invention is related to the field of building technology and in particular to the implementation of mechanical ventilation.
    • Technical background
  • Skaala Production Oy has made considerable investments in product development in order to bring to the market ventilation devices installable in a window and windows which are or can be equipped with a ventilation device.
  • By means of ventilation devices installable in a window and by means of windows equipped with a ventilation device, it is possible to implement room-specific or decentralised ventilation in buildings. Ventilation devices installable in a window and windows equipped with a ventilation device can either form a ventilation system in themselves or contribute jointly as part of a central ventilation system. A central ventilation system would typically include at least centralised air exhaust through ceiling valves at least in the bathroom and toilet facilities and possibly also in the kitchen.
  • One advantageous characteristic of a decentralised or room-specific ventilation implemented by means ventilation devices installable in a window or windows equipped with a ventilation device is that for example in residential use it is possible to bring air taken from the outside into the interior in facilities where the users spend relatively much time. When the quality of air deteriorates, ventilation is intensified locally by increasing the volume flow of a ventilation device installable in a window or of a window equipped with a ventilation device.
  • Such ventilation devices are typically kept operating continuously also in the winter. Because indoor air is warmer than outdoor air in a normal usage situation (where it is colder outdoors than indoors) and because some of the heat of indoor air is recovered in the exhaust air duct to the outdoor air travelling in the fresh air duct by using a heat exchanger, it is clear that when the indoor air cools, the accumulating condensation water needs to be treated in some way.
  • The applicant's Finnish patent 125451 describes a ventilation device used in connection with a window, which ventilation device comprises a collection trough for the collection of condensation water and an outlet tube for condensation water for the removal of condensation water through a condensation water removal hole.
  • The applicant's Finnish patent 126024 describes an arrangement for the removal of condensation water for example for a ventilation device usable in connection with a window. The document FI 20 155 091 A shows a ventilation device for a window with a heat exchanger.
    • Objective of invention
  • The objective of the invention is to improve the usage safety and operating reliability of the ventilation device.
  • This objective can be accomplished by means of the ventilation device according to independent claim 1.
  • The dependent claims describe the advantageous aspects of the ventilation device.
    • Advantages of invention
  • A ventilation device suitable to be installed in a vertical frame of a window, and equipped with a heat exchanger comprising an outlet duct forming a drain connection from the heat exchanger to the exterior. The outlet duct comprises an outlet tube inside which is a heating resistor that follows the shape of the outlet tube. At the outer end of the outlet duct is a metal sleeve which is in a mechanical contact with the heating resistor for the collection of heat from the heating resistor in order to prevent the freezing of the mouth of the outlet duct. The metal sleeve is inside the outlet tube in order to fasten the distal end of the heating resistor into place.
  • By means of the sleeve, it is possible to better keep the mouth of the outlet duct unfrozen, which prevents freezing, improves the operating reliability of the ventilation device and at the same time also prevents the formation of icicles at sub-zero temperatures Celsius better than in the ventilation device described in the patent of prior art, which enhances the usage safety of the ventilation device. The sleeve is of copper or other metal. At the moment, the sleeve is of copper due to its easy workability. The sleeve could be implemented of aluminium, steel, even plastic or other material that conducts heat sufficiently well. It is sufficient that the sleeve material works as a sufficiently good heat conductor, in other words that its thermal conductivity is for example more than 100 W/mK.
  • The sleeve is inside the outlet duct fastening the distal end of the heating resistor into place. So it is possible to better ensure that the mouth of the outlet duct remains unfrozen.
  • The ohmic resistance of the heating resistor per a unit of length is advantageously greater at the metal sleeve than in the outlet duct before the sleeve. As an example, in a heating resistor with a total power of 12 W, at the metal sleeve it is hence possible to dissipate for example 4 W of the heating power to the sleeve. Especially when using a copper sleeve, the heating power is hence spread over the area of the entire sleeve, contributing to the prevention of freezing of the mouth of the outlet tube.
  • The ohmic resistance of the heating resistor most advantageously decreases as the temperature decreases, in order to increase the heating power. In this case, the heating power of the heating resistor increases as the temperature goes farther below zero degrees Celsius, in which situation there is typically also a greater need for the defrosting feature than at sub-zero temperatures Celsius closer to -0 °C.
  • The outlet duct advantageously runs over the entire distance between the heat exchanger and the mouth of the outlet duct inside the ventilation device and furthermore so that condensation water travels all the time downwards by gravitation and with an air flow.
  • The ventilation device has most advantageously been installed in the vertical frame of the window, for example from the side of an intermediate space, in other words in the part of the vertical frame remaining between the pane of the inner sash and the pane of the outer sash.
    • List of drawings:
  • In what follows, the ventilation device is presented in more detail by means of the exemplary embodiments shown in the enclosed drawings FIG 1 - FIG 4. Of the drawings:
    • FIG 1
    shows the ventilation device installed in the frame of a ventilation window, viewed from the exterior side;
    FIG 2
    shows the outlet tube, heating resistor and sleeve;
    FIG 3
    shows the defrosting arrangement of the outlet tube while the arrangement is assembled; and
    FIG 4
    shows section IV - IV (cf. FIG 3).
  • The same reference numbers refer to the same technical characteristics in all drawings.
    • Detailed description
  • FIG 1 shows a perspective view of a ventilation window 1, to which a ventilation device 100 has been installed, viewed from the exterior U side.
  • The ventilation window 1 comprises a frame 2. In addition to this, the ventilation window 1 comprises an outer sash 4 arranged in connection with the frame 2, to which outer sash 4 at least one pane 6 has been fastened, and an inner sash 3 arranged in connection with the frame 2, to which inner sash 3 at least one pane has been fastened. The ventilation window 1 can have frame lining 9 to cover the frame 2 and the outer sash 4 from the exterior U side.
  • The outer sash 4 and the inner sash 3 have been fastened to the frame 2 or one of the sashes 3, 4 has been fastened to the frame 2 and the other sash 3, 4 has been fastened to a sash fastened to the frame 2.
  • In this way, an intermediate space 10 remains between the outer sash 4 and the inner sash 3. The outer sash 4 and the inner sash 3 together define the light opening area 7.
  • Alternatively, the ventilation window 1 can be implemented without the intermediate space 10, in other words with one sash.
  • The ventilation device 100 equipped with a heat exchanger comprises an outlet duct forming a drain connection from the heat exchanger to the exterior U, which outlet duct 55 comprises an outlet tube 551, inside which is a heating resistor 552 that follows the shape of the outlet tube 551. At the distal end of the outlet tube 551 is a sleeve 553 which is in a mechanical contact with the heating resistor for the collection of heat from the heating resistor 552 in order to prevent the freezing of the mouth of the outlet tube 551. The outlet 54 of the exhaust air duct is above the outlet duct 55.
  • The heating resistor 552 is supplied from the electrical system of the ventilation device 100.
  • Most advantageously, the sleeve 553 is inside the outlet tube 551, fastening the distal end of the heating resistor 552 into place.
  • The ohmic resistance of the heating resistor 552 per a unit of length is advantageously greater at the metal sleeve 553 than in the outlet tube before the sleeve 553.
  • The ohmic resistance of the heating resistor 552 decreases as the temperature decreases, in order to increase the heating power.
  • The outlet duct 55 runs most advantageously over the entire distance between the heat exchanger and the mouth of the outlet tube 551 inside the ventilation device 100 and furthermore so that condensation water travels all the time downwards by gravitation and with the air flow.
  • The invention should not be understood to be limited only by the below claims, but the invention is to be understood to include all their legal equivalents and the combinations of the embodiments presented.
    • List of reference numbers used
    • S
    interior
    U
    exterior
    1
    ventilation window
    2
    frame
    3
    inner sash
    4
    outer sash
    6
    pane
    7
    light opening area
    9
    frame lining
    10
    intermediate space
    20
    fresh air
    23
    waste air
    51
    inlet
    54
    outlet
    55
    outlet duct
    551
    outlet tube
    552
    heating resistor
    553
    sleeve
    100
    ventilation device

Claims (6)

  1. A ventilation device (100) suitable to be installed in a vertical frame of a window, and equipped with a heat exchanger, the ventilation device (100) comprising: an outlet duct (55) forming a drain connection from the heat exchanger to the exterior (U), the outlet duct (55) comprising an outlet tube (551) inside which is a heating resistor (552) that follows the shape of the outlet tube (551), characterized in that there is a metal sleeve (553) at the outer end of the outlet tube (551), which metal sleeve (553) is in a mechanical contact with the heating resistor for the collection of heat from the heating resistor (552) in order to prevent the freezing of the mouth of the outlet duct (55), wherein the metal sleeve (553) is inside the outlet tube (551) in order to fasten the distal end of the heating resistor (552) into place.
  2. A ventilation device (100) according to claim 1, wherein the ohmic resistance of the heating resistor (552) per a unit of length is greater at the metal sleeve (553) than in the outlet duct before the sleeve (553).
  3. A ventilation device (100) according to claim 2, wherein the ohmic resistance of the heating resistor (552) decreases as the temperature decreases, in order to increase the heating power.
  4. A ventilation device (100) according to any one of the preceding claims, wherein the outlet duct runs over the entire distance between the heat exchanger and the mouth of the outlet duct (55) inside the ventilation device (100) and furthermore so that condensation water travels all the time downwards by gravitation and with an air flow.
  5. A ventilation device (100) according to any one of the preceding claims, being installed in a vertical frame (2) of a window (1).
  6. A ventilation device (100) according to claim 5, being installed in the vertical frame (2) of the window (1) from the side of an intermediate space (10), in other words in the part of the vertical frame (2) remaining between the pane of the inner sash (3) and the pane (6) of the outer sash (4).
EP17157746.3A 2016-03-03 2017-02-24 Ventilation device for a window Active EP3214253B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20165179 2016-03-03

Publications (2)

Publication Number Publication Date
EP3214253A1 EP3214253A1 (en) 2017-09-06
EP3214253B1 true EP3214253B1 (en) 2019-07-10

Family

ID=58264366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17157746.3A Active EP3214253B1 (en) 2016-03-03 2017-02-24 Ventilation device for a window

Country Status (1)

Country Link
EP (1) EP3214253B1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022522A1 (en) * 1980-06-16 1981-12-24 Johann Baptist 6530 Bingen Pfeiffer Double glazed building or vehicle window - has bottom air intake and top outlet duct with heat exchanger
DE3837851A1 (en) * 1988-11-08 1990-05-10 Heraeus Wittmann Gmbh Electrically heatable flexible tube, in particular for window or headlamp cleaning systems of motor vehicles
CN201414228Y (en) * 2009-06-05 2010-02-24 徐洲 Heating wire
GB201001999D0 (en) * 2010-02-08 2010-03-24 Haven Ltd Frost protection system for condensate drain pipe
FI125451B2 (en) 2013-03-06 2019-03-15 Skaala Oy Ventilation window
FI126024B (en) 2014-09-05 2016-05-31 Skaala Production Oy Ventilation window and method for conducting condensate from a ventilation window to an outdoor space
FI20155091A (en) * 2015-02-10 2015-02-10 Skaala Oy Method and system of ventilation device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3214253A1 (en) 2017-09-06

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