公开(公告)号：US20240401840A1

公开(公告)日：2024-12-05

申请号：US18806946

申请日：2024-08-16

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yohei KOYAMA ,  Ryosuke YAMAMOTO ,  Taiki KOGAWA ,  Kazuaki ANDO ,  Shin HIGASHIYAMA ,  Kosuke HOTTA

IPC: F24F11/88 ,  F24F11/54 ,  F24F11/89

Abstract: In an air conditioner using a power supply wiring connected between an outdoor unit and an indoor unit for communication between the indoor unit and the outdoor unit, noise transmitted from the power supply wiring to a power supply due to the communication is reduced. An indoor unit has power input terminals that receive power. An outdoor unit is connected to a first power supply and includes power supply terminals that supply power from the first power supply. In an air conditioner, in order to supply power from the outdoor unit to the indoor unit, in some cases, the power input terminal and a power supply terminal are connected by a first power supply line, and a first communication device and a second communication device are connected by a first signal line. In this case, the air conditioner has a first communication mode in which the first communication device performs a first wired communication by using the first signal line and the first power supply line, and the second communication device performs a second wired communication by using the first signal line and the first power supply line.

公开(公告)号：US20250102181A1

公开(公告)日：2025-03-27

申请号：US18852510

申请日：2023-03-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Chang Wenn TOK ,  Shin HIGASHIYAMA ,  Kosuke HOTTA ,  Takafusa MIURA ,  Kensuke URATA ,  Keita KODERA ,  Ryosuke YAMAMOTO ,  Yohei KOYAMA ,  Shinichi ISHIZEKI

IPC: F24F11/88 ,  H04B3/54

Abstract: Air conditioning-related equipment includes: a first connection portion to which wiring for transmitting high voltage along with communication is connected; a second connection portion to which wiring dedicated to communication and not to power transmission or wiring for transmitting low voltage along with communication is connected; and a connection circuit that connects the first connection portion and the second connection portion, wherein the connection circuit includes an isolation circuit that blocks power transmission and transmits a signal pertaining to communication.

公开(公告)号：US20250088384A1

公开(公告)日：2025-03-13

申请号：US18728032

申请日：2023-01-11

Applicant: DAIKIN INDUSTRIES, LTD

Inventor： Kensuke URATA ,  Shin HIGASHIYAMA ,  Kosuke HOTTA ,  Takafusa MIURA ,  Chang Wenn TOK ,  Keita KODERA ,  Ryosuke YAMAMOTO ,  Yohei KOYAMA ,  Shinichi ISHIZEKI

IPC: H04L12/28 ,  F24F11/50 ,  H04B3/54

Abstract: A relay device is provided between a first air-conditioning related apparatus and a second air-conditioning related apparatus. The first air-conditioning related apparatus and the second air-conditioning related apparatus perform multi-hopping communication via a transmission line. The relay device relays the multi-hopping communication.

公开(公告)号：US20240102688A1

公开(公告)日：2024-03-28

申请号：US18524976

申请日：2023-11-30

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Ryosuke YAMAMOTO ,  Yohei KOYAMA ,  Youta KATOU ,  Kazuaki ANDO ,  Taiki KOGAWA ,  Shin HIGASHIYAMA ,  Kosuke HOTTA ,  Shinichi ISHIZEKI ,  Toshiaki KUMATA

IPC: F24F11/88

CPC classification number: F24F11/88

Abstract: An indoor unit included in an air conditioner that includes an outdoor unit includes a power receiving circuit (PR2), a low-frequency transmission and reception circuit as a first reception circuit, a high-frequency transmission and reception circuit as a transmission and reception circuit, and an inner-controller. The low-frequency transmission and reception circuit receives a current signal transmitted from an outdoor unit by using a current loop formed by a power line included in power supply wiring. For a first communication state in which physical connection between with the outdoor unit is recognized and a second communication state in which communication for operation of the air conditioner is performed between with the outdoor unit, the inner-controller selects use of the low-frequency transmission and reception circuit and the high-frequency transmission and reception circuit in the first communication state and the second communication state.