| 摘要 |
PROBLEM TO BE SOLVED: To obtain a dehumidifier capable of efficient operation.SOLUTION: A humidity of indoor air, a temperature of the indoor air, an operating frequency of a compressor 11, and a numerical range of a rotating speed of a blower 2 and a value of a d-axis current with which the compressor has the highest operation efficiency in the numerical range are described in a table 17. A d-axis-current determination unit 18 reads a value of a d-axis current corresponding to a condition at the time from the table 17. A compressor driving unit 19 supplies a three-phase current to the compressor 11 so that the operating frequency of the compressor 11 satisfies a compressor-frequency command value while the d-axis current satisfies this value.SELECTED DRAWING: Figure 5 |
