公开(公告)号：US11242857B2

公开(公告)日：2022-02-08

申请号：US16492192

申请日：2018-03-08

Applicant: Robert Bosch GmbH ,  Danfoss Commercial Compressors

Inventor： Clement Martignago ,  Patrice Bonnefoi ,  Stan Vandesteene ,  Yves Rosson

IPC: F04D17/12 ,  F04D29/046 ,  F04D29/16

Abstract: The centrifugal turbo-compressor (2) includes a hermetic casing; a drive shaft (6); a first and a second compression stage (12, 13) configured to compress a refrigerant and respectively including a first and a second impeller (18, 19) connected to the drive shaft (6) and being arranged in a back-to-back configuration; an interstage sealing device provided between the first and second impellers (18, 19). The hermetic casing includes a main casing portion (4) in which are arranged the first and second compression stages (12, 13) and the inter-stage sealing device. The first and second compression stage (12, 13) respectively includes a first and a second aerodynamic member (29, 31) each having an annular disc shape and respectively facing front-sides (21, 22) of the first and second impellers (18, 19).

公开(公告)号：US10605244B2

公开(公告)日：2020-03-31

申请号：US15521635

申请日：2015-09-08

Applicant: DANFOSS COMMERCIAL COMPRESSORS S.A.

Inventor： Nicolas Nouyrigat ,  Patrice Bonnefoi ,  Yves Rosson ,  Ingrid Claudin ,  Arnaud Daussin

IPC: F01C1/02 ,  F04C18/02 ,  F04C29/12 ,  F04C27/00

Abstract: This scroll compressor includes a scroll compression unit including a first fixed scroll including a first fixed base plate and a first fixed spiral wrap, an orbiting scroll arrangement (7) including a first orbiting spiral wrap (14), the first fixed spiral wrap and the first orbiting spiral wrap (14) forming a plurality of first compression chambers. The scroll compressor further includes a refrigerant suction part suitable for supplying the scroll compression unit with refrigerant to be compressed. The orbiting scroll arrangement (7) further includes a first orbiting guiding portion (21) extending from an outer end portion of the first orbiting spiral wrap (14) and configured to guide, in use, at least a part of the refrigerant supplied to the scroll compression unit towards the first compression chambers.

公开(公告)号：US10472967B2

公开(公告)日：2019-11-12

申请号：US15647343

申请日：2017-07-12

Applicant: Danfoss Commercial Compressors

Inventor： Yves Rosson ,  Philippe Dugast

IPC: F01C17/06 ,  F04C18/02 ,  F16D3/04 ,  F04C23/00

Abstract: An Oldham coupling includes an annular ring having a first side and a second side opposite to the first side, a first and a second engaging groove that are diametrically opposed and located on the first side, and a third and a fourth engaging groove that are diametrically opposed and located on the second side. The first and second engaging grooves are configured to be engaged with a first and a second engaging projection provided on a fixed element. The third and fourth engaging grooves are configured to be engaged with a third and a fourth engaging projection provided on an orbiting scroll. The first and third engaging grooves are located in a first angular sector, and the second and fourth engaging grooves are located in a second diametrically opposed angular sector of the annular ring, the first and second angular sectors have an opening angle less than 40°.

公开(公告)号：US20180274543A1

公开(公告)日：2018-09-27

申请号：US15542487

申请日：2015-10-16

Applicant: Danfoss Commercial Compressors

Inventor： Arnaud Daussin ,  Patrice Bonnefoi ,  Yves Rosson ,  Ingrid Claudin

IPC: F04C29/02 ,  F04C18/02

Abstract: A scroll compressor including a compression unit includes a first non-orbiting scroll having a receiving cavity and an orbiting scroll arrangement. The compression unit further includes a refrigerant suction part suitable for supplying the compression unit with a refrigerant flow, and a first anti-rotation device located in the receiving cavity and configured to prevent rotation of the orbiting scroll arrangement with respect to the first fixed non-orbiting scroll. The compression unit further includes an oil discharge device including an oil discharge passage, the oil discharge passage includes an oil inlet fluidly connected to the receiving cavity and at least one oil discharge outlet located in a refrigerant flow path and configured to supply the refrigerant flow with oil from the receiving cavity.