公开(公告)号：US20240377093A1

公开(公告)日：2024-11-14

申请号：US18313405

申请日：2023-05-08

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Mikihito TOKUDI

IPC: F24F11/84

Abstract: An air-conditioner including a main refrigerant circuit having a compressor, a heat-source-side heat exchanger, an expansion valve, and a utilization-side heat exchanger, a bypass path, another expansion valve that decompresses refrigerant flowing in the bypass path, an internal heat exchanger, an opening degree adjuster, and a setter that sets the target temperature difference on the basis of the degree of subcooling of the utilization-side heat exchanger.

公开(公告)号：US11890721B2

公开(公告)日：2024-02-06

申请号：US16434190

申请日：2019-06-07

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Toshio Yamanaka ,  Koji Utsumi ,  Hisashi Aoki ,  Yoshiyuki Yamada ,  Hidetaro Kayanuma

IPC: B24B49/04 ,  B24B5/16 ,  F04C29/06 ,  F04C18/16 ,  F04C2/00

CPC classification number: B24B49/04 ,  B24B5/16 ,  F04C2/00 ,  F04C18/16 ,  F04C29/06

Abstract: A screw rotor lead correction calculation device includes an initial data input section configured to input an error as a distance with respect to a reference lead at each axial position of a rotor groove portion of a screw rotor, and a processing machine input correction amount/position output section configured to compute and output, based on the error as the distance input to the initial data input section, a lead correction amount with respect to the reference lead and a lead correction starting position as an axial position for starting lead correction. With this configuration, correction data for obtaining a screw rotor with a high-accuracy lead can be obtained from a lead error with respect to a reference lead in a screw rotor obtained by ground finish of the material of the screw rotor.

公开(公告)号：US20220112896A1

公开(公告)日：2022-04-14

申请号：US17424243

申请日：2020-04-01

Applicant: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.

Inventor： Jianhui PENG ,  Fei FENG ,  Gene FIELDS

IPC: F04C29/00 ,  F04C18/02

Abstract: In some examples, a co-rotating scroll compressor includes a driver scroll having an axis aligned with the main axis and having a spiral involute, an idler scroll having an axis offset from the main axis and having a spiral involute intermeshed with the spiral involute of the driver scroll, and an Oldham coupling disposed between the driver scroll and idler scroll.
The driver scroll may offset key slots so to engage with corresponding Oldham coupling keys. In another example, the Oldham coupling may offset driver scroll keys so to engage with corresponding key slots of the driver scroll.

公开(公告)号：US20220106952A1

公开(公告)日：2022-04-07

申请号：US17421099

申请日：2019-12-25

Applicant: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.

Inventor： Tsutomu NOZAKI ,  Kazuyuki MATSUNAGA ,  Ryo KURONO

IPC: F04B39/02 ,  F04B39/04 ,  F04C18/02 ,  F04C29/02

Abstract: Provided is, e.g., a compressor with a high reliability. A compressor (100) includes a hermetic container (1) sealed with lubricant oil, an electric motor (6) placed inside the hermetic container (1) and having a stator (6a) and a rotor (6b), a crankshaft (3) configured to rotate integrally with the rotor (6b), a compression mechanism (2) configured to compress refrigerant in association with rotation of the crankshaft (3), a discharge pipe (Pb) configured to guide the refrigerant compressed in the compression mechanism (2) to the outside of the hermetic container (1), and a tubular oil ring (15) provided between the compression mechanism (2) and the electric motor (6). A cutout (s1) is, at a lower portion of the oil ring (15), provided as a first insertion portion into which the discharge pipe (Pb) is inserted.

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：USD937312S1

公开(公告)日：2021-11-30

申请号：US29747966

申请日：2020-08-26

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Designer： Yan Ding ,  Yuan Yuan ,  Chiayen Hsieh

公开(公告)号：US20210041123A1

公开(公告)日：2021-02-11

申请号：US16899732

申请日：2020-06-12

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Hayato MORI ,  Takashi INOUE

IPC: F24F11/38 ,  F24F11/74 ,  F24F11/42 ,  F24F13/30

Abstract: A refrigeration cycle system includes: an acquisition section configured to acquire external air information as information on at least one of an external air temperature around an outdoor unit or weather information; and a control section configured to control a rotation number of a fan of an air blower based on the external air information at a start of operation of the refrigeration cycle system.

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：US20200333090A1

公开(公告)日：2020-10-22

申请号：US16782348

申请日：2020-02-05

Applicant: HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.

Inventor： Mamoru HOUFUKU

IPC: F28F9/02 ,  F28D1/04

Abstract: A distributor distributing refrigerant to multiple pipes including a tubular member including, at a side surface thereof, multiple insertion ports into which the multiple pipes are inserted and a supply port through which the refrigerant is supplied, a first closing member and a second closing member configured to close the tubular member at two spots positioned along a longitudinal direction of the tubular member, and a partition member extending from the first closing member to the second closing member and configured to divide an internal space of the tubular member into a space on an insertion port side and a space on a supply port side. The partition member includes two protruding portions contacting tip ends of the multiple pipes, and includes a refrigerant flow path between the two protruding portions on a first closing member side of one of the insertion ports closest to the first closing member.

公开(公告)号：US20200309403A1

公开(公告)日：2020-10-01

申请号：US16370051

申请日：2019-03-29

Applicant: Hitachi-Johnson Controls Air Conditioning, Inc.

Inventor： Koji Naito ,  Robert D. Turney ,  Liming Yang ,  Yasutaka Yoshida

IPC: F24F11/871 ,  F24F11/47 ,  F24F11/64 ,  F24F3/044

Abstract: A refrigeration cycle, an air conditioning system, and a method for controlling a refrigeration cycle are provided. The refrigeration cycle includes an outdoor unit, an indoor unit, a controller, and an inverter. The controller controls a compressor and an outdoor fan of the air conditioning system so as to minimize a total electric power consumption of the air conditioning system. The inverter controls the outdoor fan in a rotation state predicted from a capacity demand in an air conditioning space depending on an operation mode and sensor values. The controller predicts the capacity demand and controls a rotation rate of the outdoor fan based on a prediction of the capacity demand.