Patent US3726202A successfully refreshed from Google Patents.
US3726202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement at ventilation installations in rooms with high air comfort requirements
Assignee: Svenska Flaktfabriken AB
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Filing: 1971-07-14
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Granted: 1973-04-10
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Expires: 1991-07-14
Abstract
Abstract An arrangement at ventilation installations with high air comfort requirements including a supply of large fresh air quantities without draught and a removal of exhaust air at an outer wall of a room with a window, said wall being equipped with at least two spaces formed by planeparallel plates, the space located farthest away from the room forming an exhaust air passageway to the room, and the other space located closest to the room interior being provided with a duct for the supply of fresh air adjacent the ceiling and at its lower part being in direct connection with the interior for introducing room air, and with an air diffuser with a damper means between said inlets for the introduction of supply air to the room in a proportion of fresh air and co-ejected room air which is balanced by said damper means.
Inventors
- 👤 A Ahlberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:19
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/04; F24F7/06; F24F13/00; F24F13/02; F24F13/06; F24F13/068; F24F7/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
208 words
An arrangement in ventilation installations in apartment, office and similar rooms with high air comfort requirements, including a need for the supply of large fresh air quantities without causing appreciable draught and the removal of exhaust air from the room at an outer wall adjacent a window, characterized in that the installation comprises at least two spaces in said wall formed by planeparallel plates, the first of said spaces being located farthest away from the room interior and forming an exhaust air passageway having one end in direct and free connection with the room adjacent said window and the other end adjacent the ceiling of the room connected with exhaust means extending through the remaining space of the arrangement, the second space being located closest to the room interior and being connected to a supply of fresh air adjacent the ceiling of the room and at its lower part being in direct connection with the room interior, said second space having between said connections an air diffuser equipped with a damper means for the introduction of air to the room in a proportion of fresh air from said supply and co-ejected room air from said connection with the room interior, said proportion being determined by said damper means.
Claim 2
Dependent Claim
208 words
An arrangement in ventilation installations in apartment, office and similar rooms with high air comfort requirements, including a need for the supply of large fresh air quantities without causing appreciable draught and the removal of exhaust air from the room at an outer wall adjacent a window, characterized in that the installation comprises at least two spaces in said wall formed by planeparallel plates, the first of said spaces being located farthest away from the room interior and forming an exhaust air passageway having one end in direct and free connection with the room adjacent said window and the other end adjacent the ceiling of the room connected with exhaust means extending through the remaining space of the arrangement, the second space being located closest to the room interior and being connected to a supply of fresh air adjacent the ceiling of the room and at its lower part being in direct connection with the room interior, said second space having between said connections an air diffuser equipped with a damper means for the introduction of air to the room in a proportion of fresh air from said supply and co-ejected room air from said connection with the room interior, said proportion being determined by said damper means.
Claim 3
Dependent Claim
45 words
An arrangement according to claim 1 wherein three plane parallel plates form said two spaces, characterized in that the central plate located between the two outer plates is adapted to be moved in parallel for increasing and reducing the width of said two spaces, respectively.
Claim 4
Dependent Claim
40 words
An arrangement according to claim 1 including in the space located closest to the room, between the supply of fresh air and the damper means, a conditioning element for the fresh air supplied through the upper part of the space.
Claim 5
Dependent Claim
62 words
An arrangement according to claim 1 wherein said plates are mounted in a recess above the window in the outer wall, the plate facing the room at its lower edge supporting a screen permeable to light but not to air, suspended in front of said window whereby the room air entering the two spaces at their lower ends sweeps across said window.
Claim 6
Dependent Claim
23 words
An arrangement according to claim 1 wherein said damper means is adjustable to vary the proportion of fresh air and co-ejected room air.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |