公开(公告)号：EP4339464A1

公开(公告)日：2024-03-20

申请号：EP22807744.2

申请日：2022-05-09

Applicant: LG Electronics Inc.

Inventor： OH, Junchul ,  BAE, Hyojo ,  MOON, Changgook ,  LEE, Byeongchul

IPC: F04D17/12 ,  F04D25/06 ,  F04D29/053 ,  F04D29/28 ,  F04D29/42 ,  F04D27/02

Abstract: The present invention provides a turbocompressor and a method for controlling same, the turbocompressor comprising: a driving unit for enabling generation of rotational power for compressing refrigerant; a shaft extending in one direction and installed in the driving unit to be able to rotate by means of power generated by the driving unit; and first to third compression units installed on the shaft from one side of the shaft. The first compression unit comprises a first impeller rotated by power from the driving unit such that refrigerant discharged from an evaporator can be suctioned, and the suctioned refrigerant can be compressed and discharged. The second compression unit comprises a second impeller rotated by power from the driving unit such that refrigerant discharged from the first compression unit can be suctioned, and the suctioned refrigerant can be compressed and discharged. The third compression unit comprises a third impeller. The third impeller makes it possible to suction refrigerant discharged from the second compression unit, to compress the suctioned refrigerant, and to discharge same to the outside. Alternatively, the third impeller makes it possible to provide the refrigerant while bypassing the first compression unit.