公开(公告)号：US20250067484A1

公开(公告)日：2025-02-27

申请号：US18806980

申请日：2024-08-16

Applicant: LG ELECTRONICS INC.

Inventor： Eunjun CHO ,  Jihoon Jun ,  Woojoo Choi ,  Ilyoong Shin ,  Dongkeun Yang

IPC: F25B41/42 ,  F25B43/00

Abstract: The receiver of the present disclosure includes: a housing having a space therein; an inflow pipe supplying a fluid to the housing; and an outflow pipe discharging the fluid stored in the housing to the outside, and the outflow pipe is inserted into the housing by a predetermined length or more, and a plurality of outflow holes are formed in the outflow pipe in a direction extending to the inside of the housing.

公开(公告)号：US20250035128A1

公开(公告)日：2025-01-30

申请号：US18611824

申请日：2024-03-21

Applicant: LG ELECTRONICS INC.

Inventor： Seungdeok YANG ,  Bonchang Hwang ,  Woojoo Choi ,  Seokho Choi

IPC: F04D29/42 ,  F04D17/16 ,  F04D29/44 ,  F04D29/62

Abstract: The present disclosure relates to a centrifugal fan and a method for manufacturing the same. The centrifugal fan can easily implement a three-dimensional blade by including a main plate, a blade, and a shroud that injection-molded as one body, thereby reducing the weight of the centrifugal fan and improving the operating efficiency. In addition, since assembly processes such as fastening or welding are unnecessary when manufacturing the blade, the defect rate of the blade can be reduced and the fluidity performance can be prevented from deteriorating due to traces of welded areas.

公开(公告)号：US11131472B2

公开(公告)日：2021-09-28

申请号：US16772637

申请日：2019-09-24

Applicant: LG ELECTRONICS INC.

Inventor： Jaewon Lee ,  Woojoo Choi ,  Jinhyoung Park ,  Youngjoo Shin

IPC: F25B47/02 ,  F24F11/42 ,  F25B6/02

Abstract: An air conditioner includes an outdoor heat exchanger in which N heat exchange units are spaced apart from one another sequentially in a vertical direction N expansion valves respectively connected to the N heat exchange units; N hot gas pipes respectively connected to the N heat exchange units; N hot gas valves respectively installed in the N hot gas pipes; and a controller configured to control the N expansion valves and the N hot gas valves to defrost the N heat exchange units, wherein the controller is configured to defrost a bottom heat exchange unit first, then defrost a top heat exchange unit, and defrost the heat exchange units located under the top heat exchange unit sequentially from a second highest heat exchange unit to the bottom heat exchange unit after defrosting the top heat exchange unit.

公开(公告)号：US09951781B2

公开(公告)日：2018-04-24

申请号：US14329469

申请日：2014-07-11

Applicant: LG ELECTRONICS INC.

Inventor： Woojoo Choi ,  Choonmyun Chung ,  Dongkyun Im ,  Taeman Yang

IPC: F04D17/10 ,  F24F7/007 ,  F24F1/00 ,  F04D25/08 ,  F04D25/12 ,  F04D29/44 ,  F04D29/42 ,  F04D17/16

CPC classification number: F04D17/10 ,  F04D17/16 ,  F04D25/08 ,  F04D25/082 ,  F04D25/088 ,  F04D25/12 ,  F04D29/4213 ,  F04D29/4226 ,  F04D29/441 ,  F24F1/0007 ,  F24F1/0022 ,  F24F7/007 ,  F24F2001/0037

Abstract: A centrifugal blower for an air conditioner may include a centrifugal fan rotatably coupled to a motor, and a bell mouth guiding air into the centrifugal fan. The centrifugal fan may include a hub fixed to the motor, a main plate provided at an outer circumferential surface of the hub, a shroud surrounding the rotary shaft, the shroud positioned opposite the main plate to define a main gas flow path, and wings arranged along a circumferential direction of the suction opening between the main plate and the shroud. A rear axial end of the bell mouth may be inserted into the shroud through the suction opening so as to form a predetermined radial gap with the suction opening. A rear portion of the bell mouth may include alternately formed protrusions and recesses inserted into the shroud.

公开(公告)号：US20240027077A1

公开(公告)日：2024-01-25

申请号：US18218791

申请日：2023-07-06

Applicant: LG ELECTRONICS INC.

Inventor： Yejin KIM ,  Eunjun CHO ,  Woojoo Choi ,  Jihyeong RYU ,  Dongkeun Yang

IPC: F24D17/00 ,  F24D19/10

CPC classification number: F24D17/0005 ,  F24D19/1051 ,  F24D2200/31 ,  F24D2220/0242 ,  F24D2220/0271 ,  F24D2220/06

Abstract: A hybrid multi-air conditioning system and a method for controlling a hybrid multi-air conditioning system are provided. The hybrid multi-air conditioning system may include a hot water supply unit including a hot water supply heat exchanger that exchanges heat between refrigerant and water accommodated in a water tank and a first hot water supply expansion valve that blocks or allows refrigerant condensed in the hot water supply heat exchanger to flow through a first hot water supply discharge pipe; at least one indoor device installed indoors and including an indoor heat exchanger and at least one indoor expansion valve; an outdoor device connected to the at least one indoor device and the hot water supply unit through a refrigerant pipe and including an outdoor heat exchanger, a compressor, and an outdoor expansion valve; a second hot water supply discharge pipe having a first side branched from the first hot water supply discharge pipe, which connects the hot water supply heat exchanger and the indoor heat exchanger, and a second side that joins a first discharge pipe, which connects the compressor and the outdoor heat exchanger; and a second hot water supply expansion valve installed on the second hot water supply discharge pipe.

公开(公告)号：US20230094976A1

公开(公告)日：2023-03-30

申请号：US17949532

申请日：2022-09-21

Applicant: LG Electronics Inc.

Inventor： Woojoo Choi ,  Yejin Kim ,  Eunjun Cho ,  Jihyeong Ryu

IPC: F25B41/20 ,  F25B31/00 ,  F25B49/02 ,  F25B41/40 ,  F24F5/00

Abstract: An air conditioner and a method for controlling an air conditioner. The method may include detecting an outlet temperature of a compressor; detecting a change in temperature of a hot water supply pipe; determining a system error based on the outlet temperature of the compressor; and determining an abnormality in an adjustment valve based on the temperature of the hot water supply pipe when a system error is determined.