公开(公告)号：US11231185B2

公开(公告)日：2022-01-25

申请号：US16371181

申请日：2019-04-01

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Mikihito Tokudi ,  Gen Yasuda ,  Takanori Isogawa ,  Kazuhiro Tsuchihashi ,  Hiroyuki Ogisu

IPC: F24F1/24 ,  F25B49/02 ,  F25B1/00 ,  F25B41/00 ,  F25B41/30 ,  F25B41/31 ,  F25B41/40

Abstract: An air conditioner provided which has: a main refrigerant circuit including a compressor, a heat source side heat exchanger, a first expansion valve, and a utilization side heat exchanger and configured such that refrigerant flows in the main refrigerant circuit; a sub refrigerant circuit including a cooling member configured such that refrigerant branched from the main refrigerant circuit flows in the cooling member and configured such that refrigerant branched from the main refrigerant circuit flows in the sub refrigerant circuit; and a heat generator to be cooled by the cooling member, wherein a pipe in which part of refrigerant discharged from the compressor flows is connected to the cooling member of the sub refrigerant circuit.

公开(公告)号：US11204181B2

公开(公告)日：2021-12-21

申请号：US16371181

申请日：2019-04-01

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Mikihito Tokudi ,  Gen Yasuda ,  Takanori Isogawa ,  Kazuhiro Tsuchihashi ,  Hiroyuki Ogisu

IPC: F24F1/24 ,  F25B49/02 ,  F25B1/00 ,  F25B41/00 ,  F25B41/30 ,  F25B41/31 ,  F25B41/40

Abstract: An air conditioner provided which has: a main refrigerant circuit including a compressor, a heat source side heat exchanger, a first expansion valve, and a utilization side heat exchanger and configured such that refrigerant flows in the main refrigerant circuit; a sub refrigerant circuit including a cooling member configured such that refrigerant branched from the main refrigerant circuit flows in the cooling member and configured such that refrigerant branched from the main refrigerant circuit flows in the sub refrigerant circuit; and a heat generator to be cooled by the cooling member, wherein a pipe in which part of refrigerant discharged from the compressor flows is connected to the cooling member of the sub refrigerant circuit.

公开(公告)号：US10907871B2

公开(公告)日：2021-02-02

申请号：US16200889

申请日：2018-11-27

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Hiroki Kinoshita ,  Kazuhiro Tsuchihashi ,  Naoyuki Fushimi ,  Toshiki Mochizuki ,  Shuntaro Inoue ,  Masayoshi Murofushi ,  Yoshinori Iwashina ,  Kazuhiko Tani

IPC: F25B47/00 ,  F25B41/04 ,  F25B13/00 ,  F25B41/00 ,  F25B49/02

Abstract: A refrigerant flow path switch arranged between an outdoor device and each of multiple indoor devices controls a refrigerant flow and is provided with a housing; a refrigerant flow path switching circuit having multiple refrigerant flow path switching circuits, wherein each refrigerant flow path switching circuit includes a high/low pressure gas pipe, a low pressure gas pipe, a high/low pressure electric valve provided at the high/low pressure gas pipe, and a low pressure electric valve provided at the low pressure gas pipe. A liquid pipe assembly is arranged in the housing and has multiple liquid pipes connected to the multiple indoor devices. A first divider plate is provided between adjacent ones of the refrigerant flow path switching circuits and divides an internal space of the housing such that a space divided by the first divider plate is in a substantially cubic shape, which is filled with a foaming agent.

公开(公告)号：US10557654B2

公开(公告)日：2020-02-11

申请号：US16239776

申请日：2019-01-04

Applicant: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.

Inventor： Kazunori Fukuda ,  Koji Naito ,  Kazuhiro Tsuchihashi

IPC: F25B41/04 ,  F24F1/20 ,  F24F1/30 ,  F25B13/00

Abstract: An collective device for switching refrigerant flow arranged between an indoor device and an outdoor device is provided; which includes multiple high-pressure valves; multiple low-pressure valves; a high-pressure header; a low-pressure header; a high-pressure gas pipe connecting each high-pressure valve and the high-pressure header; and a low-pressure gas pipe connecting each low-pressure valve and the low-pressure header, wherein the multiple high-pressure valves are arranged next to each other in a first direction perpendicular to a vertical direction, the multiple low-pressure valves are arranged next to each other in the first direction, and the low-pressure valves, the low-pressure header, and the low-pressure gas pipe are arranged on one side in a second direction perpendicular to the vertical direction and the first direction with respect to the high-pressure valves, the high-pressure header, and the high-pressure gas pipe.