| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the generation of a whining noise accompanying close operation frequencies of a circulation fan and a compressor in the process in which the circulation fan and the compressor reach stationary frequencies. <P>SOLUTION: In the process in which the circulation fan and the compressor reach respective stationary frequencies Fjt, Fct, one operation frequency Fc is controlled to reduce the time in which the operation frequency Fj of the circulation fan and the operation frequency Fc of the compressor are close when one operation frequency Fc changes to cross the other operation frequency Fj in the circulation fan and the compressor. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
