公开(公告)号：US10359211B2

公开(公告)日：2019-07-23

申请号：US15756465

申请日：2016-08-10

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Hayato Mori ,  Shuntaro Inoue ,  Shoutaro Yamamoto ,  Katsuaki Nagahashi

IPC: F24F1/00 ,  F24F1/50 ,  F24F5/00 ,  F24F13/20 ,  F24F13/24 ,  F24F13/32

Abstract: A refrigeration and air conditioning device, which is an outdoor unit of a refrigeration and air conditioning device provided with a heat exchanger within a housing (2) and blowers (3) arranged on the housing, the housing (2) being provided with a side cover covering the sides, a base (9) covering the bottom and a foot portion (10) arranged below the base (9), the foot portion (10) being provided with a raised portion (10b) upwardly bending an end face (10c) of a lower surface of the foot portion. The refrigeration and air conditioning device increases rigidity without increasing costs.

公开(公告)号：US11041667B2

公开(公告)日：2021-06-22

申请号：US16360189

申请日：2019-03-21

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Atsuhiko Yokozeki ,  Koji Naito ,  Kazuhito Sekiba ,  Shoutaro Yamamoto ,  Hiroaki Kaneko ,  Kazuhiko Tani

IPC: F25B49/02 ,  F25B41/00 ,  F25B41/40 ,  F25B1/04 ,  F25B13/00

Abstract: 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.

公开(公告)号：US11204188B2

公开(公告)日：2021-12-21

申请号：US16444162

申请日：2019-06-18

Applicant: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.

Inventor： Hiroaki Kaneko ,  Shoutaro Yamamoto

IPC: F25B13/00 ,  F25B1/00

Abstract: An air-conditioning device including multiple outdoor units and an indoor unit through a pipe includes a control section that obtains a degree of subcooling at an outlet of a subcooling circuit of each outdoor unit based on a temperature detected by a temperature sensor that detects the temperature of refrigerant having passed through the subcooling circuit of each outdoor unit, obtain a target value of the degree of subcooling based on the obtained multiple degrees of subcooling, and perform the control of increasing the rotation speed of a compressor of an outdoor unit having a higher degree of subcooling than the target value and decreasing the rotation speed of a compressor of an outdoor unit having a lower degree of subcooling than the target value such that a difference in the degree of subcooling at the outlet of the subcooling circuit of each outdoor unit is decreased.