Roof arranged type air-conditioner

Abstract

The present invention provides a roof arranged type air-conditioner for confirming the even close of lift type air suction grille. The roof arranged type air-conditioner comprises a machine body, a blast device imbedded into ceiling and having a heat exchanger; air suction grilles removably arranged on lower part of the machine body; a lifting device for lifting or decreasing the air suction grille. Each lifting device comprises a plurality of ropes connecting to positions separated each other by air suction grille; a plurality of reels arranged in the machine body and for swinging or releasing each rope; a drive motor for rotating a plurality of reels; and a differential device transmitting the rotation force of the drive motor to a plurality of reels and offering different rotation speed to each reel according to the difference of rotation resistance of each reel.

Description

[0001] This application claims the benefit of Korean Patent Application No. 2004-54833 filed in the Korean Intellectual Property Office on Jul. 14, 2004, which is hereby incorporated by reference. technical field [0002] The present invention relates to a ceiling-mounted air conditioner, and more particularly, to a ceiling-mounted air conditioner including a lifting device for lifting or lowering a suction grill. Background technique [0003] Generally, a ceiling-mounted air conditioner used on the indoor ceiling of a building includes: a main body embedded in the inner space of the ceiling and containing a heat exchanger and a blower; and a ceiling panel for covering the bottom of the main body and The opening formed in the ceiling. This air conditioner also includes: an inlet formed at the center of the ceiling panel for suction and discharge of indoor air and a plurality of outlets formed around the inlet on the ceiling panel; Air cleaning filter installed inside the in...

AI Technical Summary

Problems solved by technology

[0006] However, such a conventional top-mounted air conditioner has a problem that the ropes are not evenly wound around the reel when the suction grill is lifted by the operation of the lifting device, or the ropes are stretched differently from each other due to long-term use and they are different in length. In different cases presented above, the suction grille cannot be closed accurately

Although the suction grille can be closed evenly to a certain extent through the action of the coil springs installed on each reel and the control operation of the control method, there are still problems when the coil springs fail or the ropes are damaged due to long-term use. Problem with not closing evenly on all sides of the suction grille in case of overstretching

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