Damper apparatus for air conditioning system

Abstract

The invention relates to a damper apparatus for an air conditioning system for more accurately adjusting air volume in accordance with opening ratio of a damper blade. The damper apparatus includes a plurality of damper blades and an actuator for rotating the damper blade. The apparatus also includes an air flow path dividing means for dividing an air flow path in a duct into upper and lower regions with respect to a rotation axis of the damper blade and exerting resistance to air flow between the biased damper blade and the air flow path dividing means. The invention effectively suppresses air overflow with the air flow path dividing means to decrease the air volume surpassing the opening ratio, thereby more accurately adjusting air volume.

Description

CLAIM OF PRIORITY [0001] This application claims the benefit of Korean Patent Application No. 2006-24934 filed on Mar. 17, 2006, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to an air volume control apparatus (hereinafter, referred to as a damper apparatus) for automatically controlling air volume supplied to and exhausted from a room in accordance with temperature change therein. More particularly, the invention relates to a damper apparatus for an air conditioning system which exerts air resistance in accordance with open angle of the damper blade to air flow in a duct to effectively suppress air overflow due to the biased damper blade, and which measures average air flow velocity by measuring average differential pressure or dynamic pressure at many locations within the duct to accurately calculate air volume, thereby more a...

AI Technical Summary

Benefits of technology

[0033] The present invention has been made to solve the foregoing problems of the prior art and therefore an object of certain embodiments of the present invention is to provide a damper apparatus for an air conditioning system capable of effectively suppressing air overflow due to a biased damper blade, with simple structural improvements, thereby accurately adjusting air volume.

[0034] Another object of certain embodiments of the invention to provide a damper apparatus for an air conditioning system which measures average differential pressure, i.e., dynamic pressure at more various and greater number of locations in a duct to accurately measure air volume, thereby accurately adjusting air volume.

Problems solved by technology

However, as the damper blades are divided into regions and controlled respectively, a plurality of actuators are needed to rotate the damper blades in different directions, which in turn increases the total manufacture costs of the damper apparatus.

Moreover, such a conventional damper apparatus fails to obtain an air volume change ratio that is approximate to the opening ratio to a satisfactory level.

However, the problem with this conventional technology is that as the damper apparatus is used over time, measurement errors occur due to the structure of the sensors.

That is, due to back flow of the air passing through the damper blade, the static pressure measuring portion is clogged by foreign material.

Thus, precision and operational reliability of the conventional damper apparatus is degraded over time.

In addition, the conventional apparatus yields too small an open area at a low opening ratio, impossible to adjust the air volume, which leaves room for improvement.

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