| 摘要 |
The present invention relates to a variable air volume control apparatus capable of effectively reducing air overflow concentrated at one side due to a damper blade biased according to an open angle of the damper blade, thereby precisely adjusting the air volume. The variable air volume control apparatus includes a damper blade disposed rotatably inside the duct to open or close an air flow path and an actuator for rotating the damper blade. The apparatus also includes means for dividing the air flow path inside the duct at the air inlet side into an upper region and a lower region and exerting resistance to the air flow between the means and the biased damper blade. The invention effectively suppresses the air overflow occurring at high opening ratio of the damper blade with simple structural improvements, thereby accurately and precisely adjusting the air volume.
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