公开(公告)号：US20210348615A1

公开(公告)日：2021-11-11

申请号：US16921081

申请日：2020-07-06

Applicant: LG ELECTRONICS INC.

Inventor： Cheolmin KIM ,  Jinhee JEONG ,  Hyunwook HAN ,  Uisik HWANG ,  Jungho KANG ,  Heewoong LEE

IPC: F04D17/12 ,  F04D25/02 ,  F25B31/02

Abstract: A turbo compressor includes a housing with a refrigerant suction hole, through which a refrigerant is introduced, at a front portion thereof, and a motor case defining an accommodation space. The accommodation space includes a rotation shaft extending in a front-rear direction and a motor that is configured to rotate the rotation shaft. A first impeller is coupled to one end of the rotation shaft and a second impeller is coupled to the other end of the rotation shaft. The first impeller is configured to primarily compress the refrigerant introduced into the refrigerant suction hole. A connection passage, that surrounds the motor case extends backward from an outlet of the first impeller. The second impeller is configured to secondarily compress the refrigerant introduced through the connection passage.

公开(公告)号：US20210324876A1

公开(公告)日：2021-10-21

申请号：US17230086

申请日：2021-04-14

Applicant: LG ELECTRONICS INC.

Inventor： Heewoong LEE ,  Jinhee Jeong ,  Hyunwook Han ,  Uisik Hwang ,  Jungho Kang ,  Cheolmin Kim

IPC: F04D29/44 ,  F04D29/42

Abstract: The present disclosure relates to a compressor including: a motor having a rotating shaft; a first impeller housing forming a first inlet, through which a first refrigerant flows, and having a chamber into which a second refrigerant flows; a first impeller coupled to one end of the rotating shaft, and rotatably received in the first impeller housing; a diffuser spaced apart from an inside of the first impeller housing, and forming a first outlet; a second impeller housing having a second inlet formed therein; a second impeller coupled to the other end of the rotating shaft, and rotatably received in the second impeller housing; a volute case in which a volute is formed; and a motor housing having a connecting passage formed therein and connecting the first outlet and the second inlet.

公开(公告)号：US20220154982A1

公开(公告)日：2022-05-19

申请号：US17528626

申请日：2021-11-17

Applicant: LG ELECTRONICS INC.

Inventor： Jungho KANG ,  Jinhee JEONG ,  Hyunwook HAN ,  Uisik HWANG ,  Heewoong LEE ,  Chulmin KIM

IPC: F25B39/04 ,  F25B1/00

Abstract: A condenser and a turbochiller including a condenser are provided. The turbochiller may include a compressor including an impeller that compresses refrigerant and a motor that drives the impeller; a condenser for heat exchange between the refrigerant introduced from the compressor and cooling water; an evaporator for heat exchange between the refrigerant discharged from the condenser and cold water; an expansion valve provided between the condenser and the evaporator; and a collector configured to collect noncondensable gas inside of the condenser. Accordingly, it is possible to efficiently collect noncondensable gas inside of a condenser of a turbochiller.