公开(公告)号：US20210080140A1

公开(公告)日：2021-03-18

申请号：US16772637

申请日：2019-09-24

Applicant: LG ELECTRONICS INC.

Inventor： Jaewon LEE ,  Woojoo CHOI ,  Jinhyoung PARK ,  Youngjoo SHIN

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

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：US20170023001A1

公开(公告)日：2017-01-26

申请号：US15124899

申请日：2015-03-09

Applicant: LG ELECTRONICS INC.

Inventor： Taeman YANG ,  Woojoo CHOI ,  Dongkyun IM ,  Choonmyun CHUNG

IPC: F04D29/28 ,  F04D29/66

CPC classification number: F04D29/281 ,  F04D29/288 ,  F04D29/666

Abstract: Disclosed herein is a centrifugal fan. The centrifugal fan includes a back plate having a central portion for coupling with a rotation center shaft, a plurality of blades extending from the back plate, and a shroud which is connected to end portions of the blades and has an introduction end portion and a discharge end portion through which fluid passes, and the discharge end portion is rounded with a predetermined curvature in a direction away from the back plate.

Abstract translation: 本文公开了一种离心式风扇。 离心式风扇包括：背板，其具有用于与旋转中心轴联接的中心部分，从后板延伸的多个叶片和连接到叶片的端部的护罩，并且具有导入端部和排出口 流体通过其的端部，并且排出端部以远离背板的方向以预定曲率圆化。

公开(公告)号：US20150013945A1

公开(公告)日：2015-01-15

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

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 a rotary shaft of the motor, a main plate provided at an outer circumferential surface of the hub, a shroud having a suction opening surrounding the rotary shaft, the shroud positioned opposite the main plate to define a main gas flow path, and a plurality of wings arranged along the circumferential direction of the suction opening between the main plate and the shroud. A rear axial end portion 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. The rear portion of the bell mouth may include a plurality of alternately formed protruding portions and recessed portions, with the protruding portions and the recessed portions inserted into the shroud.

Abstract translation: 用于空调的离心式鼓风机可以包括可旋转地联接到马达的离心风扇和将空气引导到离心式风扇中的喇叭口。 离心风扇可以包括固定到电动机的旋转轴的轮毂，设置在轮毂的外周面的主板，具有围绕旋转轴的吸入口的护罩，与主板相对定位的护罩， 主气流路，以及沿着主板和护罩之间的吸入口的圆周方向布置的多个翼。 喇叭口的后轴向端部可以通过吸入口插入护罩中，以便与吸入口形成预定的径向间隙。 喇叭口的后部可以包括多个交替形成的突出部分和凹入部分，其中突出部分和凹入部分插入到护罩中。