Title:
空気調和装置
Document Type and Number:
Japanese Patent JP6545281
Kind Code:
B2
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:
Iwa Saki Kazuhisa
Application Number:
JP2017553535A
Publication Date:
July 17, 2019
Filing Date:
December 01, 2015
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F24F11/86; F25B41/00
Domestic Patent References:
| JP11248226A | ||||
| JP2012110070A | ||||
| JP2008002372A |
Attorney, Agent or Firm:
Patent Business Corporation Kisa Patent Trademark Office