Title:
AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/094117
Kind Code:
A1
Abstract:
An air-conditioning device comprising a control device, the control device being equipped with: a volume calculation unit which calculates the piping volume of the overall piping through which a refrigerant flows while outdoor units and indoor units are in heating operation; a frequency table in which discharge pressure, the differential pressure between the discharge pressure and suction pressure, and the piping volume have been associated with the resonance frequency of the overall piping through which the refrigerant flows; a frequency estimation unit which estimates the resonance frequency with reference to the frequency table on the basis of the piping volume calculated by the volume calculation unit, the discharge pressure, and the differential pressure between the discharge pressure and the suction pressure; and a condition setting unit which sets the range of the operational frequency of a compressor so as to restrain the operational frequency of the compressor from becoming the resonance frequency estimated by the frequency estimation unit.
Inventors:
IWASAKI KAZUHISA (JP)
Application Number:
PCT/JP2015/083754
Publication Date:
June 08, 2017
Filing Date:
December 01, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F24F11/02; F24F1/12
Foreign References:
| JPH11248226A | 1999-09-14 | |||
| JP2012110070A | 2012-06-07 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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