公开(公告)号：US20180259265A1

公开(公告)日：2018-09-13

申请号：US15758416

申请日：2015-09-10

申请人： Hitachi-Johnson Controls Air Conditioning, Inc.

发明人： Mikihito TOKUDI ,  Koji NAITO ,  Kazumoto URATA ,  Kenji MATSUMURA ,  Kazuhiko TANI ,  Masayoshi MUROFUSHI ,  Takumi KAMIAKA

IPC分类号： F28D1/04

CPC分类号： F28D1/0435 ,  F25B39/00 ,  F25B39/04 ,  F28D1/0417 ,  F28D1/047 ,  F28D1/0477 ,  F28D1/0478 ,  F28D2021/0068 ,  F28F1/32 ,  F28F1/325 ,  F28F9/26 ,  F28F9/262 ,  F28F9/268

摘要： A heat exchanger includes: a gas-side port connected to piping for a gaseous refrigerant; a liquid-side port connected to piping for a liquid refrigerant; a refrigerant path that links the gas-side port to the liquid-side port; at least four heat exchange part regions that perform heat exchange between air and the refrigerant flowing through the refrigerant path; and a branching and merging part that branches and merges the refrigerant path to connect the heat exchange part regions in series between the gas-side port and the liquid-side port through the refrigerant path. The heat exchange part regions are connected to each other through the branching and merging part so as to allow the number of refrigerant paths provided in the heat exchange part region near the gas-side port to be greater than the number of refrigerant paths provided in the heat exchange part region near the liquid-side port

公开(公告)号：US20190093931A1

公开(公告)日：2019-03-28

申请号：US16200889

申请日：2018-11-27

申请人： Hitachi-Johnson Controls Air Conditioning, Inc.

发明人： Hiroki KINOSHITA ,  Kazuhiro TSUCHIHASHI ,  Naoyuki FUSHIMI ,  Toshiki MOCHIZUKI ,  Shuntaro INOUE ,  Masayoshi MUROFUSHI ,  Yoshinori IWASHINA ,  Kazuhiko TANI

IPC分类号： F25B47/00 ,  F25B41/04 ,  F25B13/00

摘要： 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：US20190277550A1

公开(公告)日：2019-09-12

申请号：US16360189

申请日：2019-03-21

申请人： Hitachi-Johnson Controls Air Conditioning, Inc.

发明人： Atsuhiko YOKOZEKI ,  Koji NAITO ,  Kazuhito SEKIBA ,  Shoutaro YAMAMOTO ,  Hiroaki KANEKO ,  Kazuhiko TANI

IPC分类号： F25B49/02

摘要： To achieve higher efficiency at a low-load region and to enable power saving throughout a year. The refrigeration cycle apparatus 1 includes a compressor 4 that has a flow in/out port 4d through which a refrigerant is capable of flowing out and flowing in, in fluid communication with a compression room 4c; pipes 21, 22 disposed at a suction side of the compressor 4; a pipe 25 connected to the flow in/out port 4d of the compressor 4; a pipe 27 that has one end connected to the pipe 25 and an opposite end connected to the pipe 21; and a second solenoid valve 13 for opening and closing a fluid passage of the pipe 27.