公开(公告)号：US20250075692A1

公开(公告)日：2025-03-06

申请号：US18882040

申请日：2024-09-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Wooju JEON ,  Ohyeok KWON ,  Kyungmin KIM ,  Yongtae KIM ,  Jiwoong KIM ,  Kisun NAM ,  Kichul SONG

IPC: F04B39/02 ,  F04B35/04

Abstract: A reciprocating compressor is provided. The reciprocating compressor includes a case containing an oil reservoir, a motor including a stator disposed inside the case and a rotor that rotates with respect to the stator, a drive shaft that rotates integrally with the rotor and including a cavity formed at a lower portion thereof, a primary oil pump inserted into the cavity of the drive shaft and disposed in the case, a secondary oil pump into which a lower end portion of the drive shaft is inserted and coupled to the primary oil pump, a primary oil passage formed between an inner circumferential surface of the cavity of the drive shaft and the primary oil pump, and a secondary oil passage formed around the primary oil pump between an outer circumferential surface of the lower end portion of the drive shaft and the secondary oil pump, wherein, when the drive shaft rotates, oil contained in the oil reservoir moves to an upper portion of the cavity of the drive shaft along the primary oil passage and the secondary oil passage.

公开(公告)号：US20240426286A1

公开(公告)日：2024-12-26

申请号：US18750168

申请日：2024-06-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kihwan KIM ,  Minjin KIM ,  Kisun NAM ,  Hyunwoo RYU ,  Incheol HWANG

IPC: F04B35/04 ,  F04B53/22 ,  F25B31/02

Abstract: A reciprocating compressor is provided. The reciprocating compressor includes a bearing block, a fixed shaft extending vertically from a lower surface of the bearing block, formed in a cylindrical shape, and having a shaft hole formed therein, a stator disposed on the bearing block and including a coupling hole into which the fixed shaft is inserted, a holder disposed on an outer circumferential surface of the fixed shaft and configured to fix the stator to the bearing block, a rotating shaft inserted into the shaft hole of the fixed shaft, and a rotor disposed outside the stator and fixed to one end of the rotating shaft. The outer circumferential surface of the fixed shaft and the shaft hole may be formed concentrically.