Title:
HERMETIC COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2023/157078
Kind Code:
A1
Abstract:
The purpose of the present invention is to reduce the discharge amount of an oil while suppressing a reduction in oil supply performance in a hermetic compressor which has, inside a spindle of a rotary electric machine, an oil supply hole for guiding the oil axially upward. A hollow member (70) provided with a hollow internal flow path (71) is inserted into and fixed to an oil supply hole (17). The hollow member (70) has a double pipe portion (70a) in which the oil supply hole (17) and the hollow member (70) form a double cylindrical arrangement in the axial direction, and an oil sump (50) side of an annular column space (80) that is formed in a gap between the inside of the oil supply hole (17) and the outside of the hollow member (70) is open inside the oil supply hole (17), and the side opposite the oil sump (50) is closed.
Inventors:
KIMOTO TAKAYA (JP)
SASAKI KEI (JP)
SASAKI KEI (JP)
Application Number:
PCT/JP2022/005946
Publication Date:
August 24, 2023
Filing Date:
February 15, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04C29/02
Foreign References:
| JPH09317668A | 1997-12-09 | |||
| JPS56118578A | 1981-09-17 | |||
| JPS5391009U | 1978-07-25 | |||
| US4209080A | 1980-06-24 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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