公开(公告)号：US11022372B2

公开(公告)日：2021-06-01

申请号：US16019618

申请日：2018-06-27

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Shuuhei Tada ,  Kenji Matsumura ,  Nagatoshi Ooki ,  Mamoru Houfuku ,  Takeshi Endo

IPC: F28D1/053 ,  F28F1/02 ,  F28F1/42 ,  F28F9/02 ,  F25B39/00 ,  F28D1/04 ,  F28F1/32 ,  F28F1/04 ,  F28F23/00 ,  F28D1/02 ,  F24F13/30 ,  F24F11/89

Abstract: An air conditioner that includes a heat exchanger including: heat-transfer pipes extending in a horizontal direction and spaced apart at predetermined intervals in a vertical direction and configured to allow a thermal medium to flow therein. A part of the heat transfer pipes are used for at least one inflow path into which the thermal medium flows from the outside of the heat exchanger and the other part of the heat transfer pipes are used for at least one outflow path from which the thermal medium flows out to the outside. At least one connection pipe through which an outlet side of one of the at least one inflow path communicates with an inlet side of one of the at least one outflow path.

公开(公告)号：US10907902B2

公开(公告)日：2021-02-02

申请号：US15758416

申请日：2015-09-10

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Mikihito Tokudi ,  Koji Naito ,  Kazumoto Urata ,  Kenji Matsumura ,  Kazuhiko Tani ,  Masayoshi Murofushi ,  Takumi Kamiaka

IPC: F28D1/04 ,  F25B39/00 ,  F28D1/047 ,  F28F9/26 ,  F28D21/00 ,  F28F1/32 ,  F25B39/04

Abstract: 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.