| 摘要 |
PROBLEM TO BE SOLVED: To enable a fan rotation speed to be determined even if a circumstance around an installation site is inconvenient for determining a fan rotation speed.SOLUTION: This invention relates to a method for determining a fan rotation speed executed by a duct-type air volume specified control type air conditioner so as to output a prescribed rated air volume. Under an assumption that the maximum air volume level is defined as the first tap and an air volume level lower than the maximum air volume is defined as the second tap, a fan is driven at the first tap to search for a fan rotation speed where a fan air volume becomes the rated air volume and if the fan rotation speed can be searched at the first tap, the fan rotation speed is determined as the fan rotation speed at the first tap and when it is detected that a state not reaching the rated air volume is continued, a changing-over to the second tap is executed, the fan is driven at the second tap to search for the fan rotation speed that the fan air volume becomes the air volume of the second tap, and the fan rotation speed searched at the second tap is determined as the fan rotation speed at the second tap.SELECTED DRAWING: Figure 5 |
