| 摘要 |
PURPOSE: A damper blower device is provided to install a damper blower device in a heat recovery ventilator for a window and a window frame having a narrow installation space by using a compact damper module embedded inside an outlet of the blower. CONSTITUTION: A damper blower device is as follows. A plurality of vane holes is punched gradually from the upper parts of both upper walls of an outlet(104) to the lower parts of both inner walls. A rectangular keyhole(202a) is formed in both sides of one rim in a longitudinal direction. A first rectangular key is protruded in one side of a boss of a blower vane hole, and a circular vane shaft bushing is assembled in the other side of the boss so that one later end of a vane(202) is forcibly fitted into the rectangular key hole.
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