US 11,990,950 B2
Communication network system
Kosuke Hotta, Osaka (JP); and Shin Higashiyama, Osaka (JP)
Assigned to Daikin Industries, Ltd., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Jul. 10, 2023, as Appl. No. 18/220,146.
Application 18/220,146 is a continuation of application No. PCT/JP2022/001242, filed on Jan. 14, 2022.
Claims priority of application No. 2021-004300 (JP), filed on Jan. 14, 2021.
Prior Publication US 2023/0353192 A1, Nov. 2, 2023
Int. Cl. H04B 3/44 (2006.01); H04B 3/30 (2006.01); H04B 3/46 (2015.01)
CPC H04B 3/44 (2013.01) [H04B 3/30 (2013.01); H04B 3/46 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An air-conditioning apparatus comprising:
a first transmission channel;
a plurality of second transmission channels different from the first transmission channel;
a controller connected to the first transmission channel and not connected to the second transmission channels;
a plurality of air-conditioning indoor units connected to the second transmission channels and not connected to the first transmission channel; and
a plurality of air-conditioning outdoor units electrically connecting the first transmission channel and the second transmission channels, and not transmitting a short-circuit state occurring in one of the first transmission channel and the second transmission channels to a transmission channel other than the one of the first transmission channel and the second transmission channels, thereby enabling communication between devices connected to the transmission channel other than the one,
each of the plurality of air-conditioning outdoor units electrically connecting the first transmission channel and one of the plurality of second transmission channels,
each of the second transmission channels forming an air conditioner refrigerant system together with the air-conditioning indoor unit connected to the second transmission channel and the air-conditioning outdoor unit connected to the second transmission channel,
the first transmission channel connecting a plurality of the air conditioner refrigerant systems to each other,
each of the plurality of air-conditioning outdoor units not transmitting a short-circuit state occurring in one of the first transmission channel and the plurality of second transmission channels to a transmission channel other than the one of the first transmission channel and the plurality of second transmission channels, thereby enabling communication between the controller or the air-conditioning indoor unit connected to the transmission channel other than the one of the first transmission channel and the plurality of second transmission channels,
each of the plurality of air-conditioning outdoor units includes a communication unit configured to transmit and receive a signal, and
each of the plurality of air-conditioning outdoor units includes an impedance component.