WO1998036223A1 - A device leading in ventilation air - Google Patents

A device leading in ventilation air Download PDF

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Publication number
WO1998036223A1
WO1998036223A1 PCT/FI1998/000128 FI9800128W WO9836223A1 WO 1998036223 A1 WO1998036223 A1 WO 1998036223A1 FI 9800128 W FI9800128 W FI 9800128W WO 9836223 A1 WO9836223 A1 WO 9836223A1
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WO
WIPO (PCT)
Prior art keywords
box
air
filter
chamber
radiator
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/FI1998/000128
Other languages
French (fr)
Inventor
Vilho Ensio Mulari
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP98903048A priority Critical patent/EP0974033B1/en
Priority to DE69811354T priority patent/DE69811354T2/en
Priority to AT98903048T priority patent/ATE232590T1/en
Publication of WO1998036223A1 publication Critical patent/WO1998036223A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/008—Details related to central heating radiators
    • F24D19/0085—Fresh air entries for air entering the room to be heated by the radiator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • 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
    • F24F13/28—Arrangement or mounting of filters

Definitions

  • the intake of ventilation compensation air is an air distributor for use in the space between a heating radiator and outer wall.
  • the box of the device fitted with an air filter and a damper and attached to the outdoor air duct makes by means of air ports the outdoor air turn towards and intermingle with indoor air before it enters the occupied area and produces required additional heating together with the heating radiator.
  • the Finnish publication print FI-97319 is presented describing the intake of compensation air to a box behind the heating radiator and further to the room space.
  • This invention relates to a device particularly applicable to places, where the ventilation of a room space is based on negative pressure produced by a discharge fan, which causes flow of compensation air into indoor spaces.
  • the device can also be used as a compensation air device of other exhaust ventilation, e.g. in fireplaces, and s.c. ventilation of its own.
  • the objective of this invention is also to produce a device, by means of which the disadvantages of air intake by ordinary arrangements are avoided, such as draught, dust and outdoor- noise problems. Due to said adverse factors, generally the air intake is shut by the user in one way or another, and thus the ventilation cannot work as intended.
  • the objective of this invention is to create such an intake device of compensation air that it can be used in combination with different type heating radiators and also to improve the intake of air in old quarters needing renovation, so that by means of this device air can be filtered and heated at the same time the device is also muffling possible outdoor noise.
  • the box of the device is placed behind a radiator in the room or a radiator to be installed there and heated either by electricity or water.
  • the heating radiator warms up the cover of the box construction and dries off moisture possibly condensing on the surface of the box, prevents icing and evaporates moisture formed by snow or rain water and possibly entering the box with outdoor air.
  • the box of the device divides the outdoor air purposefully into three parts and steers it out of the box. By the effect of negative pressure, the air ports also steer the outdoor air evenly over the entire filter surface.
  • the user can, by means of the damper system in the device, control and steer the amount of air entering the room, for instance lessen it in order to reduce ventilation, to prevent the feeling of draught or even to diminish additional air flow due to wind.
  • Closing the other half of the two-piece damper steers the air flow to the opposite side of the device box and in this way it is also possible to influence the direction of air flow in the room.
  • Tilting the filter as per the invention makes it possible to diminish the resistance of flow.
  • the inclined filter position also enables cleansing of the device box, i.e. vacuum-cleaning with a narrow nozzle through the filter access hole thoroughly along the bottom portions of the box. In this manner the intake can be made as narrow as possible and thus well applicable for instance behind an old radiator, or the radiator can be moved a little farther from its ordinary position off the wall by means of adjustable brackets.
  • the invention is characterized in what is presented in the enclosed patent claims. In the following the invention is disclosed with reference the attached drawings, where
  • Fig. 1 is the device in contact with a radiator and cviewed from the back of the radiator.
  • Fig. 2 is a cross-section of the device from the front side.
  • Fig. 3 is a cross-section of the device from line 3-3.
  • Fig. 4 is the air filter support cassette from the front side and its cross section.
  • the device is attached by means of connector 1 to outdoor air duct 19.
  • the compensation air device is comprised of a device box 2, which is through separation by filter portion 3 divided into two chambers, the first one is the chamber of not- filtered air, and the second one the chamber of filtered air.
  • Filter portion 3 is in inclined position, wich enables vacuum- cleaning of the device box bottom with a narrow nozzle and facilitates assembly of the filter into and out of its place, especially also in a case, where the window sill is a protruding construcion.
  • the opening of contactor 1 is placed in the upper part of the device box, where the air inlet flow gets as far as possible from the impact surface, that is from the filter 3 arranged in inclined position.
  • Filter 3 that is to be placed in support cassette 4 ist pressed into place through a uniform opening 11 as broad as the device, arranged in the upper part of the box.
  • Filter 3 takes its accurate position steered by guide bars 6, which are fastened to the end faces of the device box and propped against the cover plate on the outer wall side.
  • a two-piece damper 7 for control and steering of the amount of air, in front of the outdoor air opening there is a two-piece damper 7 , with articulation 9 in its lower portion and operated with control handles 8. The control handles are moved in slots 10 functioning simultaneously as support for the damper upper end position.
  • the side face of the box on the radiator side is furnished with a hole 13 steering the flow upwards and most suitably arranged in the lower part of the box so that air can flow a longer distance upward in contact with the radiator back wall. From the same intermediate space room air 17 flows upward and in this space compensation air becomes efficiently mixed with room air and heat efficiently transmitted to the mixed air flow from the radiator back face.
  • a bottom basin 14 is formed into which moisture possibly entering with outdoor air accumulates, e.g. rain water or melted water from snow taken in. Water gets into the basin through water holes 6.1 made in guide bar 6, from where it either evaporates in the air or, if required by local circumstances, the basin can be drained with a plastic hose 16 connected to the device.
  • air ports 12,13 outdoor air is steered towards the outer wall and into recirculated air 17. Outdoor air is brought to the governor box along the outdoor air duct 19 that is connected to an ordinary outdoor grid 20 in the outer wall 21 exterior surface.
  • the outdoor air duct 19 can also be furnished a separate muffling inner tube (not illustrated) with a small flow resistance.
  • Filter 3 of the device is of ordinary filter mat material placed in a flexible support cassette 4 as per figure 4.
  • the horizontal support ribs 4.1 of the supporting lattices keep the filter mat straight and the outermost lateral support ribs 4.2 guide the supporting mat in slot 11 so that horizontal ribbs 4.1 and filter 3 do not get stuck in slot 11 or in guiding ribs 4.
  • the filter By means of the construction it is possible get the filter accurately guided and by means of the filter material the open ends to take their places self-sealingly.
  • the filter is lifted out from the device box and installed into it by means of uniform lever 5.
  • the support ribs 4.1 and 4.2 of the supporting cassette are slightly opened/shut since they are of flexible construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Ventilation (AREA)
  • Materials For Medical Uses (AREA)
  • Compressor (AREA)
  • Treating Waste Gases (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

An intake of ventilation compensation air for use as an air distributor in the space formed between heating radiator (18) and outer wall (21), the device comprising a box (2), a connector part (1) fixed to the box for connection to air filter (3), a damper (7) and air flow ports (12, 13) for conveying compensation air into room air. The device has a first chamber as broad as the box (2), into which air comes from the outside, further a second chamber as broad as the box (2), out of which compensation air flows both from the chamber opposite side ports (12) to the side and the chamber lower edge port (13) upward parallel with radiator (18) surface, and a chambers-separating filter (3) between the chambers as broad as the box (2), inclined from its upper towards the radiator.

Description

A DEVICE LEADING IN VENTILATION AIR
The intake of ventilation compensation air is an air distributor for use in the space between a heating radiator and outer wall.
The box of the device fitted with an air filter and a damper and attached to the outdoor air duct makes by means of air ports the outdoor air turn towards and intermingle with indoor air before it enters the occupied area and produces required additional heating together with the heating radiator. As technical level the Finnish publication print FI-97319 is presented describing the intake of compensation air to a box behind the heating radiator and further to the room space.
This invention relates to a device particularly applicable to places, where the ventilation of a room space is based on negative pressure produced by a discharge fan, which causes flow of compensation air into indoor spaces. The device can also be used as a compensation air device of other exhaust ventilation, e.g. in fireplaces, and s.c. ventilation of its own.
The objective of this invention is also to produce a device, by means of which the disadvantages of air intake by ordinary arrangements are avoided, such as draught, dust and outdoor- noise problems. Due to said adverse factors, generally the air intake is shut by the user in one way or another, and thus the ventilation cannot work as intended.
The objective of this invention is to create such an intake device of compensation air that it can be used in combination with different type heating radiators and also to improve the intake of air in old quarters needing renovation, so that by means of this device air can be filtered and heated at the same time the device is also muffling possible outdoor noise. In a typical case, the box of the device is placed behind a radiator in the room or a radiator to be installed there and heated either by electricity or water. The heating radiator warms up the cover of the box construction and dries off moisture possibly condensing on the surface of the box, prevents icing and evaporates moisture formed by snow or rain water and possibly entering the box with outdoor air. By means of air ports, the box of the device divides the outdoor air purposefully into three parts and steers it out of the box. By the effect of negative pressure, the air ports also steer the outdoor air evenly over the entire filter surface.
If necessary, the user can, by means of the damper system in the device, control and steer the amount of air entering the room, for instance lessen it in order to reduce ventilation, to prevent the feeling of draught or even to diminish additional air flow due to wind. Closing the other half of the two-piece damper steers the air flow to the opposite side of the device box and in this way it is also possible to influence the direction of air flow in the room.
Replacement of filter has in this device is done easily without turning the battery aside, one only has to lift the filter cassette out from the slot in the device. As filter an efficient filter mat with a sufficient cross-section and moderately priced can be used, one only has to put it in the cassette and press through the slot into place. Essential for the device is that its loss of pressure with the wanted quantity of air remains low enough.
Tilting the filter as per the invention makes it possible to diminish the resistance of flow. The inclined filter position also enables cleansing of the device box, i.e. vacuum-cleaning with a narrow nozzle through the filter access hole thoroughly along the bottom portions of the box. In this manner the intake can be made as narrow as possible and thus well applicable for instance behind an old radiator, or the radiator can be moved a little farther from its ordinary position off the wall by means of adjustable brackets. The invention is characterized in what is presented in the enclosed patent claims. In the following the invention is disclosed with reference the attached drawings, where
Fig. 1 is the device in contact with a radiator and cviewed from the back of the radiator.
Fig. 2 is a cross-section of the device from the front side.
Fig. 3 is a cross-section of the device from line 3-3.
Fig. 4 is the air filter support cassette from the front side and its cross section.
The device is attached by means of connector 1 to outdoor air duct 19. The compensation air device is comprised of a device box 2, which is through separation by filter portion 3 divided into two chambers, the first one is the chamber of not- filtered air, and the second one the chamber of filtered air. Filter portion 3 is in inclined position, wich enables vacuum- cleaning of the device box bottom with a narrow nozzle and facilitates assembly of the filter into and out of its place, especially also in a case, where the window sill is a protruding construcion.
On aiming at a small resistance of flow, the opening of contactor 1 is placed in the upper part of the device box, where the air inlet flow gets as far as possible from the impact surface, that is from the filter 3 arranged in inclined position. Filter 3 that is to be placed in support cassette 4 ist pressed into place through a uniform opening 11 as broad as the device, arranged in the upper part of the box.
Installation of filter 3 is done by means of an assembly lever 5 of same length as the filter of support cassette 4. Lever 5 supports the cassette construction and functions also as a sealing coverplate of fitting hole 11. Filter 3 takes its accurate position steered by guide bars 6, which are fastened to the end faces of the device box and propped against the cover plate on the outer wall side. For control and steering of the amount of air, in front of the outdoor air opening there is a two-piece damper 7 , with articulation 9 in its lower portion and operated with control handles 8. The control handles are moved in slots 10 functioning simultaneously as support for the damper upper end position.
In the device box ends there are air ports 12 in the second chamber portion, i.e. in the filtered-air part of the box. Further, the side face of the box on the radiator side is furnished with a hole 13 steering the flow upwards and most suitably arranged in the lower part of the box so that air can flow a longer distance upward in contact with the radiator back wall. From the same intermediate space room air 17 flows upward and in this space compensation air becomes efficiently mixed with room air and heat efficiently transmitted to the mixed air flow from the radiator back face.
In the box lower portion a bottom basin 14 is formed into which moisture possibly entering with outdoor air accumulates, e.g. rain water or melted water from snow taken in. Water gets into the basin through water holes 6.1 made in guide bar 6, from where it either evaporates in the air or, if required by local circumstances, the basin can be drained with a plastic hose 16 connected to the device. By means of air ports 12,13 outdoor air is steered towards the outer wall and into recirculated air 17. Outdoor air is brought to the governor box along the outdoor air duct 19 that is connected to an ordinary outdoor grid 20 in the outer wall 21 exterior surface.
The narrow box construction of the device and the filter sheet inside in form a construction efficiently muffling outdoor noise. If necessary, the outdoor air duct 19 can also be furnished a separate muffling inner tube (not illustrated) with a small flow resistance.
Filter 3 of the device is of ordinary filter mat material placed in a flexible support cassette 4 as per figure 4. The horizontal support ribs 4.1 of the supporting lattices keep the filter mat straight and the outermost lateral support ribs 4.2 guide the supporting mat in slot 11 so that horizontal ribbs 4.1 and filter 3 do not get stuck in slot 11 or in guiding ribs 4.
By means of the construction it is possible get the filter accurately guided and by means of the filter material the open ends to take their places self-sealingly. The filter is lifted out from the device box and installed into it by means of uniform lever 5. When the filter is assembled or removed from the cassette the support ribs 4.1 and 4.2 of the supporting cassette are slightly opened/shut since they are of flexible construction.

Claims

PATENT CLAIMS
1. An intake device of ventilation compensation for use as an air distributor in the space formed between the heating radiator (18) and outer wall (21), the device comprising a box (2), a connector part (1) fixed in the box for connection to air filter (3), a damper (7) and air flow ports (12,13) for conveying compensation air into room air, characterized in that the device has a first chamber as broad as box (2), into which air comes from the outside, further a second chamber as broad as the box (2), out of which compensation air flows both from the chamber opposite side ports (12) to the side and the chamber lower edge port (13) upward parallel with radiator (18) surface, and a chambers-separating filter (3) between the chambers as broad as box (2) and inclined from its upper towards the radiator.
2. A device according to patent claim 1 characterized in that for distribution of flow evenly through filter (3) the air flow ports (12), (13) starting from the second chamber are placed on several side portions of the box.
3. A device according to patent claim 1 characterized in that the intermingle of room air and compensation air takes place in the space between box (2) and radiator (18) and on the radiator back surface.
4. A device according to patent claim 1 characterized in that filter (3) can be lifted out from the box through fitting hole (11) in order to clean the bottom portion of the device box (2) through said hole.
5. A device according to any of the above patent claims 1-4 characterized in that filter cassette (4) of filter (3) has an assembly lever (5) functioning simultaneously as an element closing and sealing the fitting hole.
6. A device according to any of the above patent claims 1-5 characterized in that the device has a pair of dampers (6) controlling the flow and steering the direction of flow, both dampers of which are turnable with articulation (9) in their lower portion and they can be moved and supported by control handels (8) protruding from slot (10) in the device box.
7. A device according to any of the above patent claims 1-6 characterized in that box (2) has a moisture collecting and by means of the heating radiator (18) moisture evaporating bottom basin (14), into which water can get from the first chamber through water holes (6.1).
8. A device according to patent claim 7 characterized in that bottom basin (12) has a connection for draining of water from the basin, for instance along pipeline (15).
9. A device according to any of the above patent claims 1-8 characterized in that the horizontal support ribs (4.1) of the flexible filter support cassette (4) keep the filter straigth and the outmost lateral support ribs (4.2) guide filter (3) into its place by means of hole (11) edges and guide bars (6).
AMENDED CLAIMS
[received by the International Bureau on 10 Duly 1998 (10.07.98); original claims 1-9 replaced by amended claims 1-9 (2 pages)]
1. An intake device of ventilation compensation for use as an air distributor in the space formed between the heating radiator (18) and outer wall (21) , the device comprising a box (2) , a connector part (1) fixed in the box for connection to air filter (3), a damper (7) and air flow ports (12,13) for conveying compensation air into room air mixed to said room air before said conveying, characterized in that the device comprises a first chamber as broad as box (2) , into which air comes from the outside, further a second chamber as broad as the box (2), out of which compensation air flows both from the chamber opposite side ports (12) to the side and the chamber lower edge port (13) upward parallel with radiator (18) surface wherein the intermingle of room air and compensation air takes place in the space between box (2) and radiator (18) and between wall (21) and radiator (18), and a chambers-separating filter (3) between the chambers as broad as box (2) and inclined from its upper towards the radiator.
2. A device according to patent claim 1 characterized in that for distribution of flow evenly through filter (3) the air flow ports (12), (13) starting from the second chamber are placed on several side portions of the box.
3. A device according to patent claim 1 characterized in that filter (3) can be lifted out from the box through fitting hole (11) in order to clean the bottom portion of the device box (2) through said hole.
4. A device according to any of the above patent claims 1-3 characterized in that filter cassette (4) of filter (3) has an assembly lever (5) functioning simultaneously as an element closing and sealing the fitting hole.
5. A device according to any of the previous claims 1-4 characterized in that the device has a pair of dampers (6) controlling the flow and steering the direction of flow, both dampers of which are turnable with articulation (9) in their lower portion and they can be moved and supported by control handels (8) protruding from slot (10) in the device box.
6. A device according to any of the previous claims 1-5 characterized in that box (2) has a moisture collecting and by means of the heating radiator (18) moisture evaporating bottom basin (14), into which water can get from the first chamber through water holes (6.1) .
7. A device according to claim 6 characterized in that bottom basin (14) has a connection for draining of water from the basin, for instance along pipeline (15) .
8. A device according to any of the previous claims 1-7 characterized in that the horizontal support ribs (4.1) of the flexible filter support cassette (4) keep the filter straigth and the outmost lateral support ribs (4.2) guide filter (3) into its place by means of hole (11) edges and guide bars (6) .
9. A device according to any of the previous claims 1-8 characterized in that narrow box construction and filter sheet inside it form a outdoor noise muffling construction.
PCT/FI1998/000128 1997-02-12 1998-02-12 A device leading in ventilation air Ceased WO1998036223A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98903048A EP0974033B1 (en) 1997-02-12 1998-02-12 A device leading in ventilation air
DE69811354T DE69811354T2 (en) 1997-02-12 1998-02-12 VENTILATION AIR INTAKE
AT98903048T ATE232590T1 (en) 1997-02-12 1998-02-12 VENTILATION AIR INLET

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI970592 1997-02-12
FI970592A FI970592A0 (en) 1997-02-12 1997-02-12 Intagningsanordning Foer ersaettningsluft vid ventilation

Publications (1)

Publication Number Publication Date
WO1998036223A1 true WO1998036223A1 (en) 1998-08-20

Family

ID=8548186

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1998/000128 Ceased WO1998036223A1 (en) 1997-02-12 1998-02-12 A device leading in ventilation air

Country Status (5)

Country Link
EP (1) EP0974033B1 (en)
AT (1) ATE232590T1 (en)
DE (1) DE69811354T2 (en)
FI (1) FI970592A0 (en)
WO (1) WO1998036223A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008101973A1 (en) * 2007-02-22 2008-08-28 Camfil Ab Ventilation air assembly
WO2011152786A1 (en) * 2010-05-31 2011-12-08 Suncore Ab Arrangement and system for climate control
CN109945287A (en) * 2019-03-11 2019-06-28 河南三元光电科技有限公司 A kind of wall-hanging-type warm-air machine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT504937B1 (en) * 2007-02-28 2009-10-15 Rettig Icc Bv DEVICE FOR THE INTRODUCTION OF AIR

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE149751C1 (en) *
US2157307A (en) * 1938-06-27 1939-05-09 Trane Co Damper and filter arrangement for air circulating units
SE195399C1 (en) * 1960-02-11 1965-03-30 Device for fresh air supply to premises via a heating element
SE391232B (en) * 1971-07-14 1977-02-07 Boehler Zenkner Stroemtech APARTMENT FOR CLIMATEING OF ROOMS
SE455963B (en) * 1985-02-08 1988-08-22 Fellingsbro Verkstaeder DEVICE FOR PRESERVING FRESH AIR WITH A RADIATOR
US5176570A (en) * 1991-06-20 1993-01-05 Loren Liedl Filtered cold air baseboard return
US5257738A (en) * 1989-07-20 1993-11-02 Nordsvenska Industrikonstruktioner Ab Supply air terminal device
WO1995030862A1 (en) * 1994-05-09 1995-11-16 Ab Fellingsbro Verkstäder A radiator arrangement including filters
EP0769664A2 (en) * 1995-10-17 1997-04-23 Matsushita Electric Industrial Co., Ltd. Filter casing
SE506987C2 (en) * 1992-08-27 1998-03-09 Rettig Laempoe Oy Rettig Vaerm Radiator

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE149751C1 (en) *
US2157307A (en) * 1938-06-27 1939-05-09 Trane Co Damper and filter arrangement for air circulating units
SE195399C1 (en) * 1960-02-11 1965-03-30 Device for fresh air supply to premises via a heating element
SE391232B (en) * 1971-07-14 1977-02-07 Boehler Zenkner Stroemtech APARTMENT FOR CLIMATEING OF ROOMS
SE455963B (en) * 1985-02-08 1988-08-22 Fellingsbro Verkstaeder DEVICE FOR PRESERVING FRESH AIR WITH A RADIATOR
US5257738A (en) * 1989-07-20 1993-11-02 Nordsvenska Industrikonstruktioner Ab Supply air terminal device
US5176570A (en) * 1991-06-20 1993-01-05 Loren Liedl Filtered cold air baseboard return
SE506987C2 (en) * 1992-08-27 1998-03-09 Rettig Laempoe Oy Rettig Vaerm Radiator
WO1995030862A1 (en) * 1994-05-09 1995-11-16 Ab Fellingsbro Verkstäder A radiator arrangement including filters
EP0769664A2 (en) * 1995-10-17 1997-04-23 Matsushita Electric Industrial Co., Ltd. Filter casing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FAREX PRODUKTKATALOG, ENR Elementair, Varmevaxlande Tillluftsdon 1994, pages ENR1-ENR6. *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008101973A1 (en) * 2007-02-22 2008-08-28 Camfil Ab Ventilation air assembly
WO2011152786A1 (en) * 2010-05-31 2011-12-08 Suncore Ab Arrangement and system for climate control
CN109945287A (en) * 2019-03-11 2019-06-28 河南三元光电科技有限公司 A kind of wall-hanging-type warm-air machine
CN109945287B (en) * 2019-03-11 2024-02-27 河南三元光电科技有限公司 Wall-mounted warm air blower

Also Published As

Publication number Publication date
EP0974033A1 (en) 2000-01-26
DE69811354D1 (en) 2003-03-20
EP0974033B1 (en) 2003-02-12
DE69811354T2 (en) 2003-12-04
ATE232590T1 (en) 2003-02-15
FI970592A0 (en) 1997-02-12

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