EP 0658728 A3 19960529 - Device for changing the volume of the air flow into a room.
Title (en)
Device for changing the volume of the air flow into a room.
Title (de)
Vorrichtung zur Beaufschlagung eines Raumes mit einem variablen Luftvolumenstrom.
Title (fr)
Dispositif pour varier le volume d'un courant d'air dans un local.
Publication
Application
Priority
DE 4342880 A 19931216
Abstract (en)
[origin: EP0658728A2] For changing the volume of the airflow into a room, there is proposed a device with a flap (4) which is pivotable about a shaft (3). The flap (4) is equipped with a carrying arm (7) which is fitted with a displaceable weight (8). Whereas the flap (4) is pivotable through an acute angle phi , the carrying arm (7) with the weight (8) can pivot through an angle phi + phi 1. On the basis of the characteristic curve, the flap (4) opens and closes automatically, given appropriate differential pressures and acting flow forces. Depending on the angular position of the carrying arm (7) with respect to the flap (4) and depending on the position of the weight (8) with respect to the shaft (3), the flap (4) opens at a differential pressure DELTA pmax. Owing to the mass inertia, the flap (4) swings open, the pivoting movement of the carrying arm (7) additionally through the angle phi 1 accelerating the opening and preventing undesired states of equilibrium in intermediate positions of the flap (4). <IMAGE>
IPC 1-7
IPC 8 full level
F24F 11/75 (2018.01); F24F 13/14 (2006.01)
CPC (source: EP)
F24F 11/75 (2017.12); F24F 13/1426 (2013.01); F24F 2013/146 (2013.01)
Citation (search report)
- [X] GB 272215 A 19270901
- [A] US 4090434 A 19780523 - KRISKO MICHAEL L, et al
- [A] GB 2073404 A 19811014 - FAREX AS
- [A] FR 2309918 A1 19761126 - STIFAB AB [SE]
- [A] US 3066694 A 19621204 - SCHUTMAAT WAYNE H, et al
Designated contracting state (EPC)
AT CH DE GB LI NL
DOCDB simple family (publication)
EP 0658728 A2 19950621; EP 0658728 A3 19960529; DE 4342880 A1 19950622
DOCDB simple family (application)
EP 94118179 A 19941118; DE 4342880 A 19931216