| 摘要 |
<p>The air flow reversal ventilator is for use in a double-flow ventilation system with a heat pump, evaporator, condenser, and two centrifugal fans mounted on opposite shafts ends of a single motor. The ventilator is cylindrical, with shutters movable round its axis. The ventilator (10) is traversed by the air current drawn in by one of the fans (13, 16) and which discharges to the room, etc., to be ventilated, and also by the air delivered by the other fan, exhausting from the room concerned, the two currents being separate from each other. It directs one or the other of these two currents either through the evaporator (21) or the condenser.</p> |
