公开(公告)号：US20210180693A1

公开(公告)日：2021-06-17

申请号：US17117823

申请日：2020-12-10

Applicant: LG Electronics Inc.

Inventor： Youngkyun LIM ,  Jeongwoo KIM ,  Donghan KIM

IPC: F16J1/02 ,  F16J1/00 ,  F25B31/02

Abstract: A piston for a compressor includes a bearing portion having a cylindrical shape to define a suction space into which refrigerant is accommodated therein, the bearing portion being provided with a bearing surface facing an inner circumferential surface of the cylinder, a head portion coupled to a front opening of the bearing portion and provided with a plurality of suction ports which communicate with the suction space, the head portion having a compression surface configured to face a compression space to compress the refrigerant in the compression space, and a flange portion coupled to a rear opening of the bearing portion and provided with a through-passage through which the refrigerant is introduced from a muffler unit to the suction space, the flange portion being coupled to a driving portion to transmit driving force to the piston. The bearing surface is subjected to a surface treatment to improve abrasion resistance.

公开(公告)号：US20200149518A1

公开(公告)日：2020-05-14

申请号：US16678956

申请日：2019-11-08

Applicant: LG Electronics Inc.

Inventor： Wooju JEON ,  Donghan KIM ,  Youngpil KIM ,  Eonpyo HONG

IPC: F04B35/04

Abstract: Disclosed herein is a linear compressor. The linear compressor includes a piston, a cylinder, a frame, a first bearing gap formed between an inner circumferential surface of the frame and the outer circumferential surface of the cylinder, a second bearing gap formed between an inner circumferential surface of the cylinder and the outer circumferential surface of the piston, a bearing inflow passage and a bearing side passage formed in the cylinder such that fluid flows from the first bearing gap to the second bearing gap.

公开(公告)号：US20190058951A1

公开(公告)日：2019-02-21

申请号：US16040047

申请日：2018-07-19

Applicant: LG ELECTRONICS INC.

Inventor： Siyoung PARK ,  Donghan KIM ,  Shin HAN

IPC: H04R5/033 ,  H04B1/034 ,  H04B1/08 ,  H04M1/60 ,  H04R1/08 ,  H04R1/10

CPC classification number: H04R5/0335 ,  H01Q1/273 ,  H04B1/034 ,  H04B1/08 ,  H04B1/385 ,  H04M1/6066 ,  H04R1/08 ,  H04R1/1016 ,  H04R1/1041 ,  H04R1/105 ,  H04R1/1066 ,  H04R1/1091 ,  H04R5/027 ,  H04R2201/105 ,  H04R2201/107 ,  H04R2420/07

Abstract: There is disclosed a portable sound equipment comprising a support body formed in a gentle curve; electronic bodies provided in both ends of the support body, respectively, and exhaustible from the support body and rotatable to be folded or unfolded in an exhausted state; and a hinge unit configured to provide a shaft for the rotation, wherein the hinge unit comprises a connection portion projected from one end of the support body; a hinge rotatably coupled to the connection portion; a cylinder connected to the hinge and loaded in the electronic body; and a hinge spring having one end fixed to the cylinder and the other end supporting the electronic body to generate a restoring force which makes the exhausted electronic bodies become drawn into the support body, and when the electronic bodies are drawn into the support body is caught in the connection portion with respect to the rotational direction.

公开(公告)号：US20180320678A1

公开(公告)日：2018-11-08

申请号：US16031220

申请日：2018-07-10

Applicant: LG ELECTRONICS INC.

Inventor： Kichul CHOI ,  Kwangwoon AHN ,  Donghan KIM

IPC: F04B39/02 ,  F04B39/12 ,  F04B35/04 ,  F04B53/00

CPC classification number: F04B39/0292 ,  F04B35/045 ,  F04B39/126 ,  F04B39/16 ,  F04B53/008

Abstract: A reciprocating compressor is provided. The reciprocating compressor may include a cylinder having a compression space, a piston inserted into the cylinder to define the compression space while being reciprocated, the piston having a suction passage to communicate with the compression space, a gas bearing having at least one bearing hole that passes through the cylinder, so that a refrigerant gas may be injected between the cylinder and the piston to support the piston with respect to the cylinder, and a flow resister disposed at an outer circumferential surface of the cylinder or at one side of the cylinder to restrict a flow of the refrigerant gas flowing through or toward the at least one bearing hole.

公开(公告)号：US20180063620A1

公开(公告)日：2018-03-01

申请号：US15687182

申请日：2017-08-25

Applicant: LG ELECTRONICS INC.

Inventor： Donghan KIM ,  Ehwan CHO ,  Obyoung KANG

IPC: H04R1/10

CPC classification number: H04R1/105 ,  H04R1/1016 ,  H04R1/1025 ,  H04R1/1033 ,  H04R1/1041 ,  H04R1/1058 ,  H04R1/1066 ,  H04R5/0335 ,  H04R2420/07

Abstract: There is disclosed a portable sound equipment comprising a neckband wire configured to wrap a predetermined region of a user's neck; a main body coupled to one end of the neckband wire; a first printed circuit board disposed on an upper or lower surface of the main body; a flat bracket disposed on the first printed circuit board and having one surface which contacts with the first printed circuit board; a lateral bracket coupled to a lateral surface of the flat bracket; a second printed circuit board supported to the lateral bracket and toward a lateral surface of the main body; and a side button disposed on the second printed circuit board and exposed outside the lateral surface of the main body.

公开(公告)号：US20170321673A1

公开(公告)日：2017-11-09

申请号：US15496214

申请日：2017-04-25

Applicant: LG ELECTRONICS INC.

Inventor： Kyeongweon LEE ,  Donghan KIM ,  Byungju KIM ,  Byunghoon Woo ,  Wonhyun JUNG

IPC: F04B39/00 ,  F04B39/10 ,  C23C16/50 ,  C23C16/27 ,  C23C14/34 ,  F04B39/12 ,  C23C14/14

CPC classification number: F04B39/0005 ,  C23C14/14 ,  C23C14/34 ,  C23C16/27 ,  C23C16/50 ,  F04B35/045 ,  F04B39/10 ,  F04B39/1073 ,  F04B39/12 ,  F04B39/121 ,  F04B39/123 ,  F16J1/01

Abstract: A linear compressor and a method for manufacturing a linear compressor are provided. A piston of a linear compressor may include a surface treatment body made of aluminum or an aluminum alloy; a first surface treatment provided on an outer surface of the surface treatment body by a first vacuum deposition process; and a second surface treatment provided on an outer surface of the first surface treatment by a second vacuum deposition process.

公开(公告)号：US20170314542A1

公开(公告)日：2017-11-02

申请号：US15497567

申请日：2017-04-26

Applicant: LG ELECTRONICS INC.

Inventor： Seongho HA ,  Donghan KIM ,  Jaeyoun LIM ,  Kichul CHOI ,  Jungwan HEO

IPC: F04B39/00 ,  F04B35/04 ,  F04B39/12 ,  F04B39/16

Abstract: A linear compressor is provided. The linear compressor may include a piston having a first piston groove and a second piston groove.

公开(公告)号：US20210108628A1

公开(公告)日：2021-04-15

申请号：US16943810

申请日：2020-07-30

Applicant: LG Electronics Inc.

Inventor： Kyunyoung LEE ,  Youngmun LEE ,  Donghan KIM ,  Kiwon NOH ,  Eonpyo HONG

IPC: F04B39/06 ,  F04B35/04 ,  F25B31/02 ,  F04B39/00

Abstract: A linear compressor includes a cylinder, a frame, and a discharge unit. The frame includes a discharge frame surface coupled to the discharge unit and a gas hole recessed from the discharge frame surface. The discharge unit includes a bearing refrigerant passage extending toward the gas hole so that a portion of the refrigerant flowing into the discharge space flows into the gas hole.

公开(公告)号：US20200248702A1

公开(公告)日：2020-08-06

申请号：US16631823

申请日：2018-10-22

Applicant: LG Electronics Inc.

Inventor： Sunggi KIM ,  Byungjik KIM ,  Eunji HWANG ,  Donghan KIM ,  Changlae KIM

IPC: F04D25/06 ,  F04D29/056

Abstract: The present embodiment comprises: a rotary shaft; a rotor mounted on the rotary shaft; a stator for encompassing the outer circumference of the rotor; an impeller mounted on the rotary shaft so as to be spaced from the rotor; a bearing housing having a through-hole through which the rotary shaft passes; a rolling bearing disposed in the bearing housing and coupled to the rotary shaft; and a gas bearing disposed in the bearing housing so as to be spaced from the rolling bearing in an axial direction, and facing the outer circumference of the rotary shaft.

公开(公告)号：US20200157359A1

公开(公告)日：2020-05-21

申请号：US16631931

申请日：2018-07-12

Applicant: LG ELECTRONICS INC.

Inventor： Jihyun KIM ,  Donghan KIM ,  Chohee OH ,  Seojin LEE ,  Taegyu JIN ,  Sanghyun HONG

IPC: C09D5/08 ,  F28F13/18 ,  A61L2/232 ,  C09D139/06 ,  F28F19/06 ,  A61L9/01 ,  C09D133/02 ,  C09D129/04 ,  C09D167/04

Abstract: A heat exchanger of the present disclosure is operated in a cooling operation mode in which a region to be heat-exchanged is cooled by the heat exchanger or in a drying operation mode in which the heat exchanger is supplied with wind from a blowing fan, and comprises: a refrigerant pipe which forms a flow path of a refrigerant; a cooling fin which is coupled to the refrigerant pipe; and a hydrophilic coating with which the surface of at least one of the refrigerant pipe and the cooling fin is coated, wherein the hydrophilic coating contains: a first type transition metal oxide which becomes acidic by reacting with water formed on the refrigerant pipe or the cooling fin, so as to have antimicrobial activity when the heat exchanger is operated in the cooling operation mode; and a second type transition metal oxide or a post transition metal oxide which has antimicrobial activity when the heat exchanger is operated in the drying operation mode.