US 12,405,019 B2
Air conditioning system, abnormality estimation method for air conditioning system, air conditioner, and abnormality estimation method for air conditioner
Shinji Sasaki, Kanagawa (JP)
Assigned to FUJITSU GENERAL LIMITED, Kanagawa (JP)
Appl. No. 18/280,786
Filed by FUJITSU GENERAL LIMITED, Kanagawa (JP)
PCT Filed Feb. 24, 2022, PCT No. PCT/JP2022/007463
§ 371(c)(1), (2) Date Sep. 7, 2023,
PCT Pub. No. WO2022/209445, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-062277 (JP), filed on Mar. 31, 2021.
Prior Publication US 2024/0142125 A1, May 2, 2024
Int. Cl. F24F 11/32 (2018.01)
CPC F24F 11/32 (2018.01) 33 Claims
OG exemplary drawing
 
1. An air conditioning system comprising:
an air conditioner that includes
a refrigerant circuit in which at least one or more indoor units are connected to an outdoor unit by refrigerant pipes; and
a server that is communicably connected to the air conditioner, wherein
the air conditioner includes:
an first memory; and first processing circuitry coupled to the first memory and configured to:
detect a state quantity related to control on the air conditioner;
acquire a detected value of the state quantity that is detected by the detecting; and
transmit the detected value acquired by the acquiring to the server, and
the server includes:
a second memory; and second processing circuitry coupled to the second memory and configured to:
receive the detected value from the air conditioner; and
estimate occurrence of abnormality of the refrigerant circuit by using a detected value of a feature value by assuming that the state quantity related to abnormality of the refrigerant circuit is adopted as the feature value, wherein
the estimating adopts the outdoor unit and each of the indoor units as a single pair, estimates occurrence of abnormality in the refrigerant circuit for each of the pairs, estimates that abnormality has occurred in the indoor unit of a subject pair when estimating that abnormality has occurred in any of the pairs, and estimates that abnormality has occurred in the outdoor unit when estimating that abnormality has occurred in all of the pairs.