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WO1989007186A1 - Ventilation trap door - Google Patents

Ventilation trap door Download PDF

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Publication number
WO1989007186A1
WO1989007186A1 PCT/FI1989/000015 FI8900015W WO8907186A1 WO 1989007186 A1 WO1989007186 A1 WO 1989007186A1 FI 8900015 W FI8900015 W FI 8900015W WO 8907186 A1 WO8907186 A1 WO 8907186A1
Authority
WO
WIPO (PCT)
Prior art keywords
gate
trap door
opening
channel
sound
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.)
Ceased
Application number
PCT/FI1989/000015
Other languages
French (fr)
Inventor
Markku Antila
Björn BACKSTRÖM
Olli Virkkunen
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.)
TURBIMA Oy
Original Assignee
TURBIMA 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 TURBIMA Oy filed Critical TURBIMA Oy
Publication of WO1989007186A1 publication Critical patent/WO1989007186A1/en
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • 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

Definitions

  • the present invention relates to a ventilation trap door which is provided with an air filter, sound-absorbing means and a closeable gate.
  • the sound-absorbing means comprises a metal plate which is fixedly mounted in a ventilation opening in a manner that there remain gaps on its sides for the entrance of air.
  • a drawback in this solution is an inadequate possibility of controlling the air flow rate since the adjustment is merely effected by opening the trap door more or less.
  • the sound absorption is left only to the plate used as a sound-absorbing means and this does not always provide a sufficient absorbing effect.
  • the replacement of air filters requires working tools as the sound-absorbing plate must be removed prior to the replacement of filters.
  • An object of the invention is to provide a ventilation trap door which filters the incoming air , reduces the noise coming in along with air and which also offers a possi ⁇ bility of precisely controlling the rate of through- flowing air.
  • this object is resolved in a manner that the outer surface of a trap door . is fitted with a chute-like element to form a channel between it ⁇ self and the outer surface of the trap door for passing air from one section of the trap door to another and further through the trap door by way of an opening made therein, that the channel is made of a sound-absorbing material or it is provided with a sound-absorbing material, and that in the trap door opening, in front of the opening on the inner surface of the trap door or in the channel is fitted a regulator for controlling the air flow.
  • a channel formed on the outer surface of or inside a trap door is to prevent the direct entrance of air and, thus, noise.
  • air By circulating air suitably through a channel insulated with a sound-absorbing ma ⁇ terial the sound waves attenuate upon impinging on the walls of the channel.
  • the channel length must natural ⁇ ly be optimized between sufficient sound absorption efficiency and unnecessary air drag.
  • One preferred embodiment of the invention is designed in a manner that a regulator is mounted in the trap door opening, in front of the opening on the inner surface of the trap door or in the channel through the intermediary of an adjusting piece.
  • the adjust ⁇ ing piece is preferably fastened to the inner surface of the trap door, said adjusting piece in turn facil ⁇ itating in a simple and advantageous manner the con ⁇ nection of various regulators for controlling the air flow.
  • fig. 1 shows a ventilation trap door according to one embodiment of the invention in a vertical sec ⁇ tion.
  • the basic structure of a ventilation trap door shown in fig. 1 comprises a conventional handle-fitted ventilat ⁇ ion gate which is provided on the outdoor side, on the left side in fig. 1, with a rainwater grate designated with reference numeral 1 , on the oppiste side there is a closable gate 2 with an air filter 3 therebetween.
  • a ventilation trap door as shown in fig. 1 the outer surface 4 of a gate 2 is fitted with a chute-like element 5 for building a channel 6 between itself and outer surface 4 of gate 2. Air is passed from one section of gate 2 to another in channel 6 along outer surface 4 of the gate and further through gate 2 by way of an opening 7 made therein.
  • the chute-like element 5, which in this embodiment covers nearly the entire outer surface 4 of gate 2, has its inner surface coated with a sound-absorbing material 8.
  • the gate 2 itself, which is usually filled with mineral wool, is normally sufficient for absorbing the noise coming in directly through the gate.
  • the sound-insulating qualities of gate 2 in terms of such noise entering directly through a gate, are further improved by a chute-like element 5 covering nearly the entire outer surface 4 of gate 2. If necessary, the sound-insulating qualities of gate 2 can still be substantially improved by applying inside or on the surface of a gate one or a plurality of layers made of a sound-absorbing material. Such a layer can be preferably made of a metal plate fitted inside gate 2.
  • channel 6 can be arranged entirely inside
  • a regulator 9 which, in this case, comprises an adjustable grate.
  • the alternative devices for use as a regulator include also other manually adjustable valves or, for example, a thermostatic valve which automatically controls the flow rate according to temperature differences.
  • a fan can be used as a regulator and/or a flow booster.
  • said regulator 9 can also be fitted in opening 7 of gate 2 or also in channel 6.
  • an adjusting piece (not shown) to which can be readily and conventionally fastened optionally various regulators. Then, the fastening of an adjusting piece itself, e.g. with screws in front of opening 7 to inner surface 10 of gate 2, can always be effected the same way, whereby the structure of gate 2 does not require any modifications when using various regulations 9.
  • channel 6, opening 7 or regulator 9 of gate 2 can be fitted with a heater element (not shown)

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)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Air-Flow Control Members (AREA)

Abstract

The invention relates to a ventilation trap door which is provided with an air filter (3) and a closable gate (2). The outer surface (4) of gate (2) is fitted with a chute-like element (5) to form a channel (6) between itself and outer surface (4) of gate (2), or gate (2) itself is provided with a channel, adapted for passing air from one section of gate (2) to another and further through gate (2) by way of an opening (7) made therein. Channel (6) is made of a sound-absorbing material or it is provided with a sound-absorbing material (8). In opening (7) of gate (2), in front of the opening on inner surface (10) of gate (2), or in channel (6) there is fitted a regulator for controlling the air flow.

Description

Ventilation trap door
The present invention relates to a ventilation trap door which is provided with an air filter, sound-absorbing means and a closeable gate.
This type of ventilation trap door is known from Finnish Patent publication 74109. In that publication, the sound-absorbing means comprises a metal plate which is fixedly mounted in a ventilation opening in a manner that there remain gaps on its sides for the entrance of air. A drawback in this solution is an inadequate possibility of controlling the air flow rate since the adjustment is merely effected by opening the trap door more or less. Also the sound absorption is left only to the plate used as a sound-absorbing means and this does not always provide a sufficient absorbing effect. Also, the replacement of air filters requires working tools as the sound-absorbing plate must be removed prior to the replacement of filters.
An object of the invention is to provide a ventilation trap door which filters the incoming air , reduces the noise coming in along with air and which also offers a possi¬ bility of precisely controlling the rate of through- flowing air.
According to the invention, this object is resolved in a manner that the outer surface of a trap door . is fitted with a chute-like element to form a channel between it¬ self and the outer surface of the trap door for passing air from one section of the trap door to another and further through the trap door by way of an opening made therein, that the channel is made of a sound-absorbing material or it is provided with a sound-absorbing material, and that in the trap door opening, in front of the opening on the inner surface of the trap door or in the channel is fitted a regulator for controlling the air flow.
The purpose of a channel formed on the outer surface of or inside a trap door is to prevent the direct entrance of air and, thus, noise. By circulating air suitably through a channel insulated with a sound-absorbing ma¬ terial the sound waves attenuate upon impinging on the walls of the channel. The channel length must natural¬ ly be optimized between sufficient sound absorption efficiency and unnecessary air drag.
One preferred embodiment of the invention is designed in a manner that a regulator is mounted in the trap door opening, in front of the opening on the inner surface of the trap door or in the channel through the intermediary of an adjusting piece. The adjust¬ ing piece is preferably fastened to the inner surface of the trap door, said adjusting piece in turn facil¬ itating in a simple and advantageous manner the con¬ nection of various regulators for controlling the air flow.
The invention will now be described in more detail with reference made to the accompanying drawing, in which:
fig. 1 shows a ventilation trap door according to one embodiment of the invention in a vertical sec¬ tion.
The basic structure of a ventilation trap door shown in fig. 1 comprises a conventional handle-fitted ventilat¬ ion gate which is provided on the outdoor side, on the left side in fig. 1, with a rainwater grate designated with reference numeral 1 , on the oppiste side there is a closable gate 2 with an air filter 3 therebetween. In a ventilation trap door as shown in fig. 1, the outer surface 4 of a gate 2 is fitted with a chute-like element 5 for building a channel 6 between itself and outer surface
Figure imgf000005_0001
4 of gate 2. Air is passed from one section of gate 2 to another in channel 6 along outer surface 4 of the gate and further through gate 2 by way of an opening 7 made therein. The chute-like element 5, which in this embodiment covers nearly the entire outer surface 4 of gate 2, has its inner surface coated with a sound-absorbing material 8.
When circulating air through channel 6 insulated with sound absorbing material 8, the sound waves traveling along with air attenuate upon impinging on the channel walls. The gate 2 itself, which is usually filled with mineral wool, is
Figure imgf000005_0002
normally sufficient for absorbing the noise coming in directly through the gate. The sound-insulating qualities of gate 2, in terms of such noise entering directly through a gate, are further improved by a chute-like element 5 covering nearly the entire outer surface 4 of gate 2. If necessary, the sound-insulating qualities of gate 2 can still be substantially improved by applying inside or on
Figure imgf000005_0003
the surface of a gate one or a plurality of layers made of a sound-absorbing material. Such a layer can be preferably made of a metal plate fitted inside gate 2.
Figure imgf000005_0004
Figure imgf000005_0005
Alternatively, channel 6 can be arranged entirely inside
In the embodiment shown in fig. 1, in front of opening 7 of gate 2 to inner surface 10 of gate 2 there is fastened a regulator 9 which, in this case, comprises an adjustable grate. The alternative devices for use as a regulator include also other manually adjustable
Figure imgf000006_0002
valves or, for example, a thermostatic valve which automatically controls the flow rate according to temperature differences. Also a fan can be used as a regulator and/or a flow booster.
Alternatively, said regulator 9 can also be fitted in
Figure imgf000006_0003
opening 7 of gate 2 or also in channel 6.
For standardizing the mode of fastening various regu¬ lators it is preferable to use an adjusting piece (not shown) to which can be readily and conventionally fastened optionally various regulators. Then, the fastening of an adjusting piece itself, e.g. with
Figure imgf000006_0001
screws in front of opening 7 to inner surface 10 of gate 2, can always be effected the same way, whereby the structure of gate 2 does not require any modifications when using various regulations 9.
If desired, channel 6, opening 7 or regulator 9 of gate 2 can be fitted with a heater element (not shown)

Claims

Claims
1. A ventilation trap door which is provided with an air filter (3) , sound-absorbing means and a closable gate (2), c h a r a c t e r i z e d in that the outer surface (4) of gate (2) is fitted with a chute-like element (5) to form a channel (6) between itself and outer surface (4) of gate (2) , or gate (2) itself is provided with a channel, adapted for passing air from one section of gate (2) to another and further through gate (2) by way of an opening (7) made therein, that said channel (6) is made of a sound-absorbing material or it is provided with a sound-absorbing material (8), and that in opening (7) of gate (2) , in front of the opening on inner surface (10) of gate (2), or in chan¬ nel (6) is fitted a regulator (9) for controlling the air flow.
2. A ventilation trap door as set forth in claim 1, c h a r a c t e r i z e d in that the regulator is fitted in opening (7) of gate (2) , in front of the opening on inner surface (10) of gate (2), or in chan¬ nel (6) through the intermediary of an adjusting piece.
3. A ventilation trap door as set forth in claim 1 or 2, c h a r a c t e r i z e d in that the adjusting piece is fastened to inner surface (10) of gate (2).
4. A ventilation trap door as set forth in any of claims 1 - 3, c h a r a c t e r i z e d in that the regulator is an adjustable grate, a disc valve, a thermostatic valve or the like.
5. A ventilation trap door as set forth in any of claims 1 - 3, c h a r a c t e r i z e d in that the regulator is a fan.
6. A ventilation trap door as set forth in any of claims 1 - 5, c h a r a c t e r i z e d in that the channel (6), opening (7) or regulator (9) of gate (2) is fitted with a heater element.
7. A ventilation trap door as set forth in any of claims 1 - 6, c h a r a c t e r i z e d in that inside or on the surface of gate (2) there is formed one or a plurality of layers made of a sound-absorbing material,
8. A ventilation trap door as set forth in claim 7, c h a r a c t e r i z e d in that said sound-absorbing layer comprises a metal plate fitted inside said gate (2).
PCT/FI1989/000015 1988-02-03 1989-01-27 Ventilation trap door Ceased WO1989007186A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI880487A FI78338C (en) 1988-02-03 1988-02-03 LUFTVAEXLINGSLUCKA.
FI880487 1988-02-03

Publications (1)

Publication Number Publication Date
WO1989007186A1 true WO1989007186A1 (en) 1989-08-10

Family

ID=8525843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1989/000015 Ceased WO1989007186A1 (en) 1988-02-03 1989-01-27 Ventilation trap door

Country Status (2)

Country Link
FI (1) FI78338C (en)
WO (1) WO1989007186A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997039287A1 (en) * 1996-04-15 1997-10-23 Zeta Dynamics Ltd. Ventilation unit
DE19633735A1 (en) * 1996-08-21 1998-04-09 Rolf Gerisch Flexible window film with filter elements
RU2150565C1 (en) * 1999-07-21 2000-06-10 Общество с ограниченной ответственностью "МОНТАЖЛЕГКОНСТРУКЦИЯ" Block to shut off openings in outer walls of buildings

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520042A (en) * 2020-05-18 2020-08-11 熊招丽 Burglary-resisting door with new trend function

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1946617A1 (en) * 1969-09-15 1971-03-18 Luick Friedrich Continuous ventilation, especially for rooms enclosed by fixed, non-pivoting or tilting window sashes, e.g. Living rooms, vehicle rooms, etc.
DE2806574A1 (en) * 1978-02-16 1979-08-23 Hans Guenter Gebhardt Window ventilating and venting unit - has lengthways perforated intake and outlet ducts with fan and sound insulation
DE3001537A1 (en) * 1980-01-17 1981-07-23 Chemoplast-Kunststoff Gmbh, 6780 Pirmasens Heat loss free window frame ventilator - has membrane hung between outer and inner stops in housing with opening
FI74109B (en) * 1986-09-15 1987-08-31 Ilmasti Oy VAEDRINGSFOENSTER.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1946617A1 (en) * 1969-09-15 1971-03-18 Luick Friedrich Continuous ventilation, especially for rooms enclosed by fixed, non-pivoting or tilting window sashes, e.g. Living rooms, vehicle rooms, etc.
DE2806574A1 (en) * 1978-02-16 1979-08-23 Hans Guenter Gebhardt Window ventilating and venting unit - has lengthways perforated intake and outlet ducts with fan and sound insulation
DE3001537A1 (en) * 1980-01-17 1981-07-23 Chemoplast-Kunststoff Gmbh, 6780 Pirmasens Heat loss free window frame ventilator - has membrane hung between outer and inner stops in housing with opening
FI74109B (en) * 1986-09-15 1987-08-31 Ilmasti Oy VAEDRINGSFOENSTER.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997039287A1 (en) * 1996-04-15 1997-10-23 Zeta Dynamics Ltd. Ventilation unit
DE19633735A1 (en) * 1996-08-21 1998-04-09 Rolf Gerisch Flexible window film with filter elements
DE19633735C2 (en) * 1996-08-21 1999-05-12 Rolf Gerisch Ventilation window and assembly kit for making the ventilation window
RU2150565C1 (en) * 1999-07-21 2000-06-10 Общество с ограниченной ответственностью "МОНТАЖЛЕГКОНСТРУКЦИЯ" Block to shut off openings in outer walls of buildings

Also Published As

Publication number Publication date
FI880487A0 (en) 1988-02-03
FI78338C (en) 1989-07-10
FI78338B (en) 1989-03-31

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