Title:
AIR CONDITIONING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/241108
Kind Code:
A1
Abstract:
The present invention enables prompt refrigerant recovery using the pump-down operation of an outdoor unit 4, even when an air conditioner 2 is filled with more refrigerant than the outdoor unit 4 can store. An air conditioning system 1 comprises: an air conditioner 2 that has an indoor unit 5 and a plurality of outdoor units 4 connected to the indoor unit 5; and a control device controller 30 that controls the air conditioner 2. The control device controller 30 alternately performs first control to cause one of the outdoor units 4 to perform pump-down operation, and put another outdoor unit 4 into a state in which refrigerant is recovered by a refrigerant recovery machine 6, and second control to put the outdoor unit 4 caused to perform the pump-down operation in the first control into the state in which the refrigerant is recovered by the refrigerant recovery machine 6, and cause the outdoor unit 4 put into the state in which the refrigerant is recovered in the first control to perform the pump-down operation.
Inventors:
MAEKAWA NAOKI
SHIGETA AKIHIRO
HASHIMOTO SHUNICHI
SHIGETA AKIHIRO
HASHIMOTO SHUNICHI
Application Number:
PCT/JP2021/016678
Publication Date:
December 02, 2021
Filing Date:
April 26, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F25B45/00; F24F11/32; F25B1/00
Domestic Patent References:
| WO2016157519A1 | 2016-10-06 |
Foreign References:
| JP2004232934A | 2004-08-19 | |||
| JP2013122364A | 2013-06-20 | |||
| JP2019143877A | 2019-08-29 | |||
| JP2000199660A | 2000-07-18 | |||
| JP2020094409A | 2020-06-18 |
Other References:
See also references of EP 4160118A4
Attorney, Agent or Firm:
KUSHIBUCHI & ASSOCIATES (JP)
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