Method of controlling an air conditioning apparatus and air conditioning apparatus using the method.

摘要

The present invention discloses a novel method of controlling an air conditioning apparatus and an air conditioning apparatus utilizing the control method. The method of controlling an air conditioning apparatus according to the present invention comprises the steps of sucking and cooling air in a room; measuring an air temperature in the room and a temperature of cooled air discharged to the room; determining a first difference value ( DELTA T1 corresponding to the difference between the measured air temperature in the room and a target value of the room temperature; determining a second difference value ( alpha . DELTA T2) corresponding to the difference between a target value of the discharged air temperature lower than the target value of the room temperature by a predetermined value and the measured value of the discharged air temperature; generating a control signal ( DELTA T) corresponding to the difference between the first difference value ( DELTA T1 and the second difference value ( alpha . DELTA T2); and controlling a rotational speed of a compressor of the air conditioning apparatus in accordance with the value of the control signal ( DELTA T) and the measured value of the air temperature in the room, so as to maintain the difference between the target value of the room temperature and the discharged air temperature to be a predetermined constant value. The air conditioning apparatus for realizing the control method of the present invention is an air conditioning apparatus which utilizes a vapor compression cycle to cool a coolant and perform a heat exchange between air and the coolant through a heat exchanger (8) to cool down air, and comprises a first temperature sensor (1) for measuring an air temperature in a room; a second temperature sensor (3) for measuring air cooled by the air conditioning apparatus and discharged to the room; a unit (2) for setting a target value for a room temperature and a target value for a temperature of air discharged to the room at a value lower than the target value for the room temperature by a predetermined value; a unit (4) for determining a first difference value ( DELTA T1 corresponding to the difference between the air temperature in the room measured by the first sensor and the target value for the room temperature indicated by the setting unit; a unit (4) for determining a second difference value ( alpha . DELTA T2) corresponding to a difference between the target value for the discharged air temperature indicated by the indicating unit and the discharged air temperature measured by the second temperature sensor; a unit (4) for generating a control signal ( DELTA T) corresponding to the difference between the first difference value and the second difference value; and a control unit (4) for controlling a rotational speed of an compressor (5) of the air conditioning apparatus in accordance with the value of the control signal ( DELTA T) and the air temperature value in the room measured by the first temperature sensor to maintain the difference between the target value for the room temperature and the measured discharged air temperature to be a predetermined constant value. <IMAGE>