Room air conditioner having inlet and outlet closures and method

Refrigeration – Processes – Circulating external gas

Patent

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Details

62131, 62180, 454236, 454256, F25B 4900

Patent

active

058573437

ABSTRACT:
A room air conditioner includes an air inlet, an air outlet, a heat exchanger disposed between the inlet and outlet, and an air circulation fan. The inlet is opened and closed by motor-driven inlet vanes. The outlet is opened and closed by a vertically slidable motor-driven door. Air direction control vanes extend across the outlet for varying the direction of discharged air. Before the door is either opened or closed, the air control vanes are automatically swung upwardly to a clearance position to avoid interfering with movement of the door. When the inlet and outlet are to be closed, the inlet vane motor is actuated prior the door motor to ensure that the inlet and outlet are fully closed simultaneously, even though it takes longer for the inlet vanes to travel to their fully closed state. A sensor determines when the door reaches an almost-closed state, and the door motor continues to operate for a set period thereafter to ensure that the door becomes fully closed.

REFERENCES:
patent: 4848214 (1989-07-01), Nagao et al.
patent: 5443420 (1995-08-01), Kim et al.
patent: 5461875 (1995-10-01), Lee et al.

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