| 摘要 |
PURPOSE:To improve the air conditioning efficiency by a method wherein the feeling of chilliness is prevented from giving to human body due to the descent of blow-off temperature and at the same time the direction of blown-off air is optimized. CONSTITUTION:The room temperature is detected by a thermistor 1 in terms of resistances and sent to a central processing unit (CPU) 5 by being converted into digital data by an A/D converter 2. On the other hand, the blow-off temperature is detected by a thermistor 3 in terms of resistances and sent to CPU5 by being converted into digital data by an A/D converter 4. CPU5 compares said digital data of the A/D converters 2 and 4 with the share of frequencies so as to decide an operating frequency and then to issue the address signal of said operating frequency to a programmable counter 6 in order to invert DC source to AC source with said operating frequency by the control signal from an inverter controller 8 in order to send to a compressor motor 10 to drive a compressor. When the compressor is started at the time t0, the room temperature is below Ts-1 and consequently the share of frequencies depends only on the room temperature or a drive on 75Hz is performed in order to control the room temperature and yet, because the blow-off temperature is also below 37 deg.C, the direction of blown-off air is kept horizontally. When the blow-off temperature exceeds 37 deg.C at the time t1, the direction of blown-off air is changed from the horizontal direction to the downward direction. |
