| 摘要 |
A room ventilating device has two separate airflow paths 32, 33 respectively intended for the introduction of and removal of air from a room. The apparatus is designed to remove heat from the departing air and to transfer the heat to the fresh air. One radial blower 13 provides a simultaneous air flow through both flow paths, the flow paths then extending through a heat exchanger 27', 27'', 27''', the air subsequently entering outlet chambers 38 and 39 where one flow of air is discharged into the room to be ventilated and the other flow of air is discharged to the atmosphere. The rotor 14 of the blower 13 is located in a chamber that is common to the two flow paths, the chamber having two axially opposed inlets 7 and 9 communicating respectively with the atmosphere and the interior of the room. The chamber is divided longitudinally into portions solely by a partition 15 that is formed integrally with the blower rotor. The heat exchanger, formed from successive stacks of plate shaped elements 27, is such that each flow path comprises an odd number of longitudinal portions arranged consecutively as a zig-zag therebeing a plate or strip-free zone 34, 35 between each adjacent pair of consecutive portions. A longitudinal partition 37 is disposed in the case adjacent the outlet end of the heat exchanger to define the two outlet chambers 38, 39. <IMAGE> |
