Title:
METHOD FOR CONTROLLING AIR CONDITIONING APPARATUS, AND AIR CONDITIONING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/142269
Kind Code:
A8
Abstract:
This method for controlling an air conditioning apparatus (1), includes: a step for circulating a refrigerant via a refrigerant pipe (4) between an outdoor unit (2) and a plurality of indoor units (3); a step for acquiring operation states of the indoor units (3); a step for determining whether or not the oil quantity of a compressor (5) in the outdoor unit (2) has decreased; and a step for determining, when it is determined that the oil quantity has decreased, whether to perform oil recovery operations by opening expansion valves (13) corresponding to only some of the indoor units (3) that are in operation or to perform oil recovery operations by opening the expansion valves (13) corresponding to all of the indoor units (3).
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Inventors:
IMATO NAOKI (JP)
MIURA KEN (JP)
NAGAI HIROYUKI (JP)
MIURA KEN (JP)
NAGAI HIROYUKI (JP)
Application Number:
PCT/JP2018/001241
Publication Date:
September 12, 2019
Filing Date:
January 17, 2018
Export Citation:
Assignee:
TOSHIBA CARRIER CORP (JP)
International Classes:
F25B1/00; F24F11/46; F24F11/49; F25B13/00
Attorney, Agent or Firm:
TOKYO INTERNATIONAL PATENT FIRM (JP)
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