WO1989007225A1 - Replacement air valve - Google Patents

Replacement air valve Download PDF

Info

Publication number
WO1989007225A1
WO1989007225A1 PCT/FI1989/000014 FI8900014W WO8907225A1 WO 1989007225 A1 WO1989007225 A1 WO 1989007225A1 FI 8900014 W FI8900014 W FI 8900014W WO 8907225 A1 WO8907225 A1 WO 8907225A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
mounting flange
valve
opening
fitted
Prior art date
Application number
PCT/FI1989/000014
Other languages
French (fr)
Inventor
Markku Antila
Björn BACKSTRÖM
Olli Virkkunen
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 WO1989007225A1 publication Critical patent/WO1989007225A1/en

Links

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
    • 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
    • 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 present invention relates to a replacement air valve which can be fitted in an opening made in a wall structure or the like and which is provided with an air filter, a silencer means made of a sound dampening board fitted against the wall of an opening in a wall structure or the like, as well as a flow control means.
  • Such a valve is prior known from Finnish Patent 70294, wherein the valve is designed as filter cassette, each end of which is provided with filter elements and be ⁇ tween filter elements there are noise pick-ups, said filter elements and noise pick-ups being resiliently and removably mounted at a distance from each other.
  • a drawback in this structure is the small size of fil ⁇ ter elements as they are plate-shaped or flat pieces fitted crosswise relative to the opening. In addition, the replacement of these filter elements is quite troublesome.
  • An object of the invention is to provide a replacement air valve, wherein the filter surface of an air filter is as large as possible and, in addition to that, the replacement of a filter can be readily effected without any tools at all. Furthermore, the valve must reduce the noise coming in along with air and also offer a possibility of controlling exactly the rate of through- flowing air.
  • this object has been carried out in a manner that in front of the opening to the wall is fastened a mounting flange having a hole there ⁇ in aligned with the opening, that the air filter is a tubular, fastening flange fitted filter adapted to be inserted through the mounting flange hole into an open ⁇ ing in a wall structure or the like and to- be removably fastened by its fastening flange to the mounting flange whereby, with the filter secured in position, the actual filter section of the filter is spaced from said sound dampening board, and that the mounting flange is remov ⁇ ably fitted with a flow control means.
  • the mounting flange is a substan ⁇ tially flat element provided with holes or recesses for fastening the mounting flange with screws or the like to a wall, clamping means for fastening a filter as well as clamping means for fastening an adjusting piece and/or a flow control means.
  • Yet another preferred embodiment of the invention is designed in a manner that the air filter carries a separate, fastening flange fitted body section, which is removably fitted with the actual filter section, or the air filter is designed as a disposable filter car ⁇ tridge replaceable as a whole.
  • the filter section pre ⁇ ferably comprises a tube made of a filter fabric and- sealed at one end.
  • fig. 1 shows a longitudinal section of a replacement air valve of the invention fitted in an opening made in a wall structure.
  • Fig. 2 shows a front view of a replacement air valve of the invention with an adjusting piece removed.
  • Fig. 3 shows a front view of an adjusting piece.
  • Fig. 4 shows a longitudinal section similar to fig. 1 of a replacement air valve according to one em ⁇ bodiment of the invention.
  • Fig. 1 shows schematically a replacement air valve of the invention in a longitudinal section.
  • the valve is fitted in an opening 2 made in a wall structure desig ⁇ nated with reference numeral 1 , which opening may be an existing ventilation port extending through the wall or an opening made just for this purpose.
  • the outer surface 3 of wall structure 1 is provided with a rain grate 4 covering said opening 2 and, re ⁇ spectively, the inner surface 5 of wall structure 1 is fitted with a mounting flange 6 aligned with opening 2 and fastened e.g. with screws 13.
  • the walls of opening 2 are preferably covered with a sound dampening board 7 over the entire section extending between rain grate 4 and mounting flange 6.
  • sound dampening board 7 is preferably such that it comprises a resilient layer conforming closely to the wall of opening 2, a vapour barrier layer and a sound insulation layer.
  • Board 7 can be designed as a tube which is fitted in opening 2 after cutting. Naturally, board 7 can also be designed so as to con ⁇ form precisely to opening 2.
  • said mounting flange 6 is further fitted with an adjusting piece 11, covering said flange entirely and carrying in turn a regulator 12, which in the example of fig. 1 is an adjustable grate.
  • a regulator it is also possible to use other manually adjustable valves as well or, for example, a thermostatic valve which automatically controls the flow rate according to temperature differences.
  • a fan can also be used as a regulator and/or a flow booster.
  • the mounting flange 6 is a substantially flat element provided with holes or recesses for fastening the mount ⁇ ing flange to wall 1 by means of screws 13 or the like. Furthermore, it is provided with clamping means 16 for fastening a filter and clamping means 19 for fastening adjusting piece 11 and/or flow rate regulator 12.
  • the mounting flange 6 is provided with two headed clamp ⁇ ing pins 16 disposed symmetrically relative to a hole 8 for fastening an air filter 9 by means of two grooves
  • said mounting flange 6 For fastening the adjusting piece 11 , made of a box- shaped element, to mounting flange 6, said mounting flange 6 is provided with extensions 18 which protrude perpendicularly from its plane and are provided with holes 19 in which the respectively positioned pins 17 of adjusting piece 11 are engaged as said adjusting piece 11 is pushed on top of mounting flange 6.
  • the adjusting piece 11 is used for standardizing the various modes of fastening flow regulators 12, whereby various regulators 12 can be readily fastened to ad ⁇ justing piece 11 optionally in various ways.
  • the fastening of adjusting piece 11 itself can always be effected in the same, e.g. above-described manner.
  • An air opening 20 made in adjusting piece 11 can either be positioned concentrically with hole 8 of mounting flange 6 or, alternatively, offset relative to hole 8 of mounting flange 6. In the latter case the purpose is to further silence the incoming noise, since sound waves in this case are forced to impinge to a sound ⁇ proofing material 21 placed in a duct between hole 8 of mounting flange 6 and air opening 20 of adjusting piece 11.
  • Adjusting piece 11 or flow control means or regulator 12 can be provided with a heater element (not shown), if desired, for draftless ventilation.
  • Fig. 4 illustrates a replacement air valve according to one preferred embodiment of the invention in a view similar to fig. 1.
  • the identical or corresponding elements are designated with the same reference numerals as in figs. 1 - 3.
  • a mounting flange 6 is fasten ⁇ ed to a wall e.g. with screws 13.
  • a mounting flange 10 for air filter 9 is in this embodiment fastened by means of screws 25 or the like to adjusting piece 11 which in turn is secured e.g. by means of a convention ⁇ al snap joint 26 to mounting flange 6, as shown in fig. 4.
  • Inside adjusting piece 11 is fitted e.g. by gluing a sealing ring 21 made of a sound-insulating material which compresses against mounting flange 6 as adjusting piece 11 is pressed in position.
  • the mounting flange 10 for air fil ⁇ ter 9 is fitted with a cylindrical member 27 which in a per se known manner is provided with support members 28, made e.g. of coated steel wire and intended for air filter 9 sealed at one end, which filter, in order to increase the filter surface area, can be folded as shown in fig. 4 or some other suitable way.
  • said filter 9 is mounted on top of cylindrical member 27 and, in order to secure its position, it is possible to use a rubber ring or the like (not shown) .
  • thermostatic regulator 30 which moves an adjustment plate 29 axial- ly relative to mounting flange 10 for controlling the air flow rate through the valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Valves (AREA)
  • Air-Flow Control Members (AREA)

Abstract

The invention relates to a replacement air valve which can be fitted in an opening (2) made in a wall structure (1) or the like and which is provided with an air filter, a silencer made of a sound dampening board (7) fitted against the wall of opening (2) in wall structure (1) or the like, as well as a flow control means. In front of opening (2) to wall (1) is fastened a mounting flange (6) having a hole (8) therein aligned with opening (2). Air filter (9) is a tubular filter fitted with a fastening flange (10) and adapted to be inserted through hole (8) of mounting flange (6) into opening (2) in wall structure (1) or the like and to be removably fastened by its fastening flange (10) to mounting flange (6) whereby, with filter (9) secured in position, an actual filter section (22) of the filter is spaced from said sound dampening board (7). Mounting flange (6) is removably fitted with a flow control means (12).

Description

Replacement air valve
The present invention relates to a replacement air valve which can be fitted in an opening made in a wall structure or the like and which is provided with an air filter, a silencer means made of a sound dampening board fitted against the wall of an opening in a wall structure or the like, as well as a flow control means.
Such a valve is prior known from Finnish Patent 70294, wherein the valve is designed as filter cassette, each end of which is provided with filter elements and be¬ tween filter elements there are noise pick-ups, said filter elements and noise pick-ups being resiliently and removably mounted at a distance from each other. A drawback in this structure is the small size of fil¬ ter elements as they are plate-shaped or flat pieces fitted crosswise relative to the opening. In addition, the replacement of these filter elements is quite troublesome.
An object of the invention is to provide a replacement air valve, wherein the filter surface of an air filter is as large as possible and, in addition to that, the replacement of a filter can be readily effected without any tools at all. Furthermore, the valve must reduce the noise coming in along with air and also offer a possibility of controlling exactly the rate of through- flowing air.
According to the invention, this object has been carried out in a manner that in front of the opening to the wall is fastened a mounting flange having a hole there¬ in aligned with the opening, that the air filter is a tubular, fastening flange fitted filter adapted to be inserted through the mounting flange hole into an open¬ ing in a wall structure or the like and to- be removably fastened by its fastening flange to the mounting flange whereby, with the filter secured in position, the actual filter section of the filter is spaced from said sound dampening board, and that the mounting flange is remov¬ ably fitted with a flow control means.
One preferred embodiment of the invention is carried out in a manner that the mounting flange is a substan¬ tially flat element provided with holes or recesses for fastening the mounting flange with screws or the like to a wall, clamping means for fastening a filter as well as clamping means for fastening an adjusting piece and/or a flow control means.
Yet another preferred embodiment of the invention is designed in a manner that the air filter carries a separate, fastening flange fitted body section, which is removably fitted with the actual filter section, or the air filter is designed as a disposable filter car¬ tridge replaceable as a whole. The filter section pre¬ ferably comprises a tube made of a filter fabric and- sealed at one end.
The invention will now be described in more detail with reference made to the accompanying drawing, in which
fig. 1 shows a longitudinal section of a replacement air valve of the invention fitted in an opening made in a wall structure.
Fig. 2 shows a front view of a replacement air valve of the invention with an adjusting piece removed. Fig. 3 shows a front view of an adjusting piece.
Fig. 4 shows a longitudinal section similar to fig. 1 of a replacement air valve according to one em¬ bodiment of the invention.
Fig. 1 shows schematically a replacement air valve of the invention in a longitudinal section. The valve is fitted in an opening 2 made in a wall structure desig¬ nated with reference numeral 1 , which opening may be an existing ventilation port extending through the wall or an opening made just for this purpose.
The outer surface 3 of wall structure 1 is provided with a rain grate 4 covering said opening 2 and, re¬ spectively, the inner surface 5 of wall structure 1 is fitted with a mounting flange 6 aligned with opening 2 and fastened e.g. with screws 13. The walls of opening 2 are preferably covered with a sound dampening board 7 over the entire section extending between rain grate 4 and mounting flange 6.
The structure of sound dampening board 7 is preferably such that it comprises a resilient layer conforming closely to the wall of opening 2, a vapour barrier layer and a sound insulation layer. Board 7 can be designed as a tube which is fitted in opening 2 after cutting. Naturally, board 7 can also be designed so as to con¬ form precisely to opening 2.
In addition to an air filter 9, said mounting flange 6 is further fitted with an adjusting piece 11, covering said flange entirely and carrying in turn a regulator 12, which in the example of fig. 1 is an adjustable grate. As a regulator it is also possible to use other manually adjustable valves as well or, for example, a thermostatic valve which automatically controls the flow rate according to temperature differences. A fan can also be used as a regulator and/or a flow booster.
The mounting flange 6 is a substantially flat element provided with holes or recesses for fastening the mount¬ ing flange to wall 1 by means of screws 13 or the like. Furthermore, it is provided with clamping means 16 for fastening a filter and clamping means 19 for fastening adjusting piece 11 and/or flow rate regulator 12.
The mounting flange 6 is provided with two headed clamp¬ ing pins 16 disposed symmetrically relative to a hole 8 for fastening an air filter 9 by means of two grooves
14 made in its flange 10 and disposed symmetrically relative to centre axis as well as by means of its con¬ necting hole 15, said groove 14 being narrower than the head of pin 16 and, respectively, the diameter of hole
15 being greater than that of the head of pin 16.
When inserting air filter 9 through hole 8 of mounting flange 6 in opening 2, the heads of pins 16 of mounting flange 6 work their way through holes 15 in mounting flange 10 of air filter 9 whereafter, by turning said mounting flange 10 by lugs 23, said pins 16 are forced into grooves 14 of mounting flange 10 to thus clamp air filter 9 in position.
For fastening the adjusting piece 11 , made of a box- shaped element, to mounting flange 6, said mounting flange 6 is provided with extensions 18 which protrude perpendicularly from its plane and are provided with holes 19 in which the respectively positioned pins 17 of adjusting piece 11 are engaged as said adjusting piece 11 is pushed on top of mounting flange 6.
The adjusting piece 11 is used for standardizing the various modes of fastening flow regulators 12, whereby various regulators 12 can be readily fastened to ad¬ justing piece 11 optionally in various ways. Thus, the fastening of adjusting piece 11 itself can always be effected in the same, e.g. above-described manner.
An air opening 20 made in adjusting piece 11 can either be positioned concentrically with hole 8 of mounting flange 6 or, alternatively, offset relative to hole 8 of mounting flange 6. In the latter case the purpose is to further silence the incoming noise, since sound waves in this case are forced to impinge to a sound¬ proofing material 21 placed in a duct between hole 8 of mounting flange 6 and air opening 20 of adjusting piece 11.
Adjusting piece 11 or flow control means or regulator 12 can be provided with a heater element (not shown), if desired, for draftless ventilation.
Fig. 4 illustrates a replacement air valve according to one preferred embodiment of the invention in a view similar to fig. 1. The identical or corresponding elements are designated with the same reference numerals as in figs. 1 - 3.
Also in this embodiment, a mounting flange 6 is fasten¬ ed to a wall e.g. with screws 13. A mounting flange 10 for air filter 9 is in this embodiment fastened by means of screws 25 or the like to adjusting piece 11 which in turn is secured e.g. by means of a convention¬ al snap joint 26 to mounting flange 6, as shown in fig. 4. Inside adjusting piece 11 is fitted e.g. by gluing a sealing ring 21 made of a sound-insulating material which compresses against mounting flange 6 as adjusting piece 11 is pressed in position.
In this embodiment, the mounting flange 10 for air fil¬ ter 9 is fitted with a cylindrical member 27 which in a per se known manner is provided with support members 28, made e.g. of coated steel wire and intended for air filter 9 sealed at one end, which filter, in order to increase the filter surface area, can be folded as shown in fig. 4 or some other suitable way. At its open end, said filter 9 is mounted on top of cylindrical member 27 and, in order to secure its position, it is possible to use a rubber ring or the like (not shown) .
In the solution shown in fig. 4, inside cylindrical member 27 is fitted a per se known a thermostatic regulator 30 which moves an adjustment plate 29 axial- ly relative to mounting flange 10 for controlling the air flow rate through the valve.

Claims

Claims
1. A replacement air valve which can be fitted in an opening (2) made in a wall structure (1) or the like and which is provided with an air filter, a silencer means made of a sound dampening board (7) fitted against the wall of opening (2) in wall structure (1) or the like, as well as a flow control means, c h a r a c - t e r i z e d in that in front of opening (2) to wall (1) is fastened a mounting flange (6) having a hole (8) therein aligned with opening (2) , that air filter (9) is a tubular filter fitted with a fastening flange (10) and adapted to be inserted through hole (8) of mounting flange (6) into opening (2) in wall structure (1) or the like and to be removably fastened by its fastening flange (10) to mounting flange (6) whereby, with filter (9) secured in position, an actual filter section (22) of the filter is spaced from sound dampening board (7) , and that mounting flange (6) is removably fitted with a flow control means (12) .
2. A valve as set forth in claim 1, c h a r a c t e r ¬ i z e d in that said mounting flange (6) is provided with holes or recesses for fastening the mounting flange to wall (1) by means of screws (13) or the like, clamp¬ ing means (16) for fastening filter (9) and clamping means (19) for fastening an adjusting piece (11) and/or flow control means (12).
3. A valve as set forth in claim 1 or 2, c h a r a c ¬ t e r i z e d in that an air opening (20) made in ad¬ justing piece (11) is fitted concentrically with hole (8) of mounting flange (6) .
A valve as set forth in claim 1 or 2, c h a r a c - t e r i z e d in that an air opening (20) made in ad¬ justing piece (11) is fitted offset relative to hole (8) of mounting flange (6) .
5. A valve as set forth in any of claims 1 - 4, c h a r a c t e r i z e d in that a duct between hole
(8) of mounting flange (6) and air opening (20) of ad¬ justing piece (11) is provided with a sound-insulating material (21) .
6. A valve as set forth in any of claims 1 - 5, c h a r a c t e r i z e d in that said flow control means (12) is connected with mounting flange (6) through the intermediary of adjusting piece (11) .
7. A valve as set forth in any of claims 1 - 6, c h a r a c t e r i z e d in that said air filter (9) carries a separate body section fitted with a fasten¬ ing flange (10), upon which body section said actual filter section (22) is removably mounted, or air filter
(9) is designed as a disposable filter cartridge re¬ placeable as a whole.
8. A valve as set forth in any of claims 1 - 7, c h a r a c t e r i z e d in that said filter section (22) consists of a tube which is made of filter fabric and sealed at one end.
9. A valve as set forth in any of claims 1 - 8, c h a r a c t e r i z e d in that said sound dampening board (7) comprises a resilient layer, a vapour barrier layer and a soundproofing layer.
10. A valve as set forth in any of claims 1 - 9, c h a r a c t e r i z e d in that said sound dampening board (7) is designed as a tube.
11. A valve as set forth in any of claims 1 - 10, c h a r a c t e r i z e d in that the valve is provided with a heater element.
PCT/FI1989/000014 1988-02-03 1989-01-27 Replacement air valve WO1989007225A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI880486 1988-02-03
FI880486A FI78337C (en) 1988-02-03 1988-02-03 Valve for replacement air

Publications (1)

Publication Number Publication Date
WO1989007225A1 true WO1989007225A1 (en) 1989-08-10

Family

ID=8525842

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1989/000014 WO1989007225A1 (en) 1988-02-03 1989-01-27 Replacement air valve

Country Status (2)

Country Link
FI (1) FI78337C (en)
WO (1) WO1989007225A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012467A1 (en) * 1990-02-19 1991-08-22 Berggren & Eriksson Ingenjörer Ab A heating and ventilation system
GB2315122A (en) * 1996-07-11 1998-01-21 Rytons Building Products Limit Wall ventilator
WO2002039026A1 (en) * 2000-11-10 2002-05-16 ABB Fläkt AB Ventilating device for air exchange in buildings and ventilator therefore
WO2007006568A1 (en) * 2005-07-12 2007-01-18 Berbel Ablufttechnik Gmbh Air guide box
US8048186B2 (en) 2009-04-02 2011-11-01 General Electric Company Filter retention systems and devices
RU182919U1 (en) * 2018-03-29 2018-09-05 Антон Геннадьевич Вайс VENTILATION UNIT FOR FASTENING THE EXTERNAL WALL OF A BUILDING WITH A VENTILATION HOLE
US10119469B2 (en) 2016-09-15 2018-11-06 General Electric Company Method and apparatus for modularized inlet silencer baffles
FR3067097A1 (en) * 2017-05-30 2018-12-07 Anjos Ventilation WALL AIR INLET AND CONTROLLED MECHANICAL VENTILATION COMPRISING SUCH AIR INTAKE
US10385778B2 (en) 2017-01-06 2019-08-20 General Electric Company System and method for an improved inlet silencer baffle
US10550766B2 (en) 2017-01-06 2020-02-04 General Electric Company System and method for an improved inlet silencer baffle
JP2020038031A (en) * 2018-09-04 2020-03-12 三菱地所レジデンス株式会社 Ventilation hole terminal member and building
US10722990B2 (en) 2016-09-15 2020-07-28 General Electric Company Method for installing and removing modularized silencer baffles
RU211081U1 (en) * 2021-12-02 2022-05-19 Антон Геннадьевич Вайс AIR INTAKE UNIT FOR SUPPLY VENTILATION UNIT

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE620499C (en) * 1935-10-22 Eugen Steiner Air cleaning, humidifying and cooling device with a rotating wire mesh filter
US3358577A (en) * 1965-08-16 1967-12-19 Krueger Mfg Company Air diffusing register
US4163416A (en) * 1977-08-29 1979-08-07 Schako Metallwarenfabrik Ferdinand Schad Gmbh Slotted outlet for the ventilation of interior spaces
US4274330A (en) * 1979-07-09 1981-06-23 Witten Automatic Vent Company, Inc. Ventilator and mounting frame assembly
SE428155B (en) * 1975-06-10 1983-06-06 Carrier Corp OUTDOOR DEVICE BY AIR CONDITIONING

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE620499C (en) * 1935-10-22 Eugen Steiner Air cleaning, humidifying and cooling device with a rotating wire mesh filter
US3358577A (en) * 1965-08-16 1967-12-19 Krueger Mfg Company Air diffusing register
SE428155B (en) * 1975-06-10 1983-06-06 Carrier Corp OUTDOOR DEVICE BY AIR CONDITIONING
US4163416A (en) * 1977-08-29 1979-08-07 Schako Metallwarenfabrik Ferdinand Schad Gmbh Slotted outlet for the ventilation of interior spaces
US4274330A (en) * 1979-07-09 1981-06-23 Witten Automatic Vent Company, Inc. Ventilator and mounting frame assembly

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991012467A1 (en) * 1990-02-19 1991-08-22 Berggren & Eriksson Ingenjörer Ab A heating and ventilation system
GB2315122A (en) * 1996-07-11 1998-01-21 Rytons Building Products Limit Wall ventilator
GB2315122B (en) * 1996-07-11 2000-03-08 Rytons Building Products Limit Wall ventilator
WO2002039026A1 (en) * 2000-11-10 2002-05-16 ABB Fläkt AB Ventilating device for air exchange in buildings and ventilator therefore
WO2007006568A1 (en) * 2005-07-12 2007-01-18 Berbel Ablufttechnik Gmbh Air guide box
US8048186B2 (en) 2009-04-02 2011-11-01 General Electric Company Filter retention systems and devices
US10722990B2 (en) 2016-09-15 2020-07-28 General Electric Company Method for installing and removing modularized silencer baffles
US10119469B2 (en) 2016-09-15 2018-11-06 General Electric Company Method and apparatus for modularized inlet silencer baffles
US10385778B2 (en) 2017-01-06 2019-08-20 General Electric Company System and method for an improved inlet silencer baffle
US10550766B2 (en) 2017-01-06 2020-02-04 General Electric Company System and method for an improved inlet silencer baffle
FR3067097A1 (en) * 2017-05-30 2018-12-07 Anjos Ventilation WALL AIR INLET AND CONTROLLED MECHANICAL VENTILATION COMPRISING SUCH AIR INTAKE
RU182919U1 (en) * 2018-03-29 2018-09-05 Антон Геннадьевич Вайс VENTILATION UNIT FOR FASTENING THE EXTERNAL WALL OF A BUILDING WITH A VENTILATION HOLE
JP2020038031A (en) * 2018-09-04 2020-03-12 三菱地所レジデンス株式会社 Ventilation hole terminal member and building
RU211081U1 (en) * 2021-12-02 2022-05-19 Антон Геннадьевич Вайс AIR INTAKE UNIT FOR SUPPLY VENTILATION UNIT
RU2775296C1 (en) * 2021-12-02 2022-06-29 Антон Геннадьевич Вайс Supply ventilation unit and air intake unit for it

Also Published As

Publication number Publication date
FI78337C (en) 1989-07-10
FI78337B (en) 1989-03-31
FI880486A0 (en) 1988-02-03

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