Invention Grant
- Patent Title: Scroll compressor having a centrifugal oil pump
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Application No.: US17690517Application Date: 2022-03-09
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Publication No.: US11754074B2Publication Date: 2023-09-12
- Inventor: Patrice Bonnefoi
- Applicant: Danfoss Commercial Compressors
- Applicant Address: FR Trevoux
- Assignee: Danfoss Commercial Compressors
- Current Assignee: Danfoss Commercial Compressors
- Current Assignee Address: FR Trevoux
- Agency: McCormick, Paulding & Huber PLLC
- Priority: FR 02350 2021.03.10
- Main IPC: F04C29/02
- IPC: F04C29/02 ; F04C18/02 ; F04C23/00

Abstract:
The scroll compressor (1) includes a compression unit (6); a drive shaft (16) which is vertically orientated; upper and lower bearing arrangements (27, 28) configured to rotatably support the drive shaft (16); a centrifugal oil pump (29) including a pick-up tube (32) attached to a lower end portion (23) of the drive shaft (16) and provided with a oil inlet immersed in an oil sump (31), the centrifugal oil pump (29) being configured to deliver oil to the compression unit (6) and to the upper and lower bearing arrangements (27, 28); and a static fairing member (35) secured to a non-rotating part of the scroll compressor (1) and including a static tubular part (36) which is immersed in the oil sump (31) and which surrounds the pick-up tube (32) with a predetermined distance such that a gap is formed between the inner surface of the static tubular part (36) and the outer surface of the pick-up tube (32).
Public/Granted literature
- US11913455B2 Scroll compressor having a centrifugal oil pump Public/Granted day:2024-02-27
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