公开(公告)号：US11525453B2

公开(公告)日：2022-12-13

申请号：US16491201

申请日：2018-03-08

Applicant: Robert Bosch GmbH ,  Danfoss Commercial Compressors

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

IPC: F04D29/056 ,  F01D25/12 ,  F16C3/02 ,  F16C17/02 ,  F16C33/12 ,  F04D29/057

Abstract: The bearing arrangement includes a one-piece gas bearing sleeve (32) configured to rotatably support the drive shaft (4) and made in molybdenum or in a molybdenum alloy, the one-piece gas bearing sleeve (32) including a radial bearing surface (33) configured to Surround the drive shaft (4).

公开(公告)号：US20220397109A1

公开(公告)日：2022-12-15

申请号：US17831822

申请日：2022-06-03

Applicant: Danfoss Commercial Compressors

Inventor： Clement Martignago ,  Alain Picavet ,  Alexis Delorme

IPC: F04B39/10 ,  F04B39/00 ,  F04B39/08

Abstract: The discharge valve arrangement (17) includes a valve plate (18) including a discharge passage (22) and a valve seat (23) surrounding the discharge passage (22); a valve housing (24) being secured to the valve plate (18) and including a bottom portion (25) facing away from the valve plate (18), a sidewall (26) extending from the bottom portion (25) and towards the valve plate (18), and a discharge opening (28) formed in the sidewall (26); a valve member (31) displaceable between a closed position in which the valve member (31) closes the discharge passage (22) and an open position in which the valve member (31) opens the discharge passage (22). The valve housing (24) includes a gas damping chamber defined by the bottom portion (25) and the sidewall (26) and being configured to accommodate the valve member (31) in the open position; and an exhaust opening (37) formed in the bottom portion (25) and emerging in the gas damping chamber.

公开(公告)号：US20200011334A1

公开(公告)日：2020-01-09

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 ,  F04D29/16 ,  F04D29/046

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：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：US12018666B2

公开(公告)日：2024-06-25

申请号：US17831822

申请日：2022-06-03

Applicant: Danfoss Commercial Compressors

Inventor： Clement Martignago ,  Alain Picavet ,  Alexis Delorme

IPC: F04B39/10 ,  F04B39/00 ,  F04B39/08 ,  F16K15/02

CPC classification number: F04B39/1066 ,  F04B39/0055 ,  F04B39/08 ,  F16K15/025 ,  F04B39/102 ,  Y10T137/7937

Abstract: The discharge valve arrangement (17) includes a valve plate (18) including a discharge passage (22) and a valve seat (23) surrounding the discharge passage (22); a valve housing (24) being secured to the valve plate (18) and including a bottom portion (25) facing away from the valve plate (18), a sidewall (26) extending from the bottom portion (25) and towards the valve plate (18), and a discharge opening (28) formed in the sidewall (26); a valve member (31) displaceable between a closed position in which the valve member (31) closes the discharge passage (22) and an open position in which the valve member (31) opens the discharge passage (22). The valve housing (24) includes a gas damping chamber defined by the bottom portion (25) and the sidewall (26) and being configured to accommodate the valve member (31) in the open position; and an exhaust opening (37) formed in the bottom portion (25) and emerging in the gas damping chamber.

公开(公告)号：US20200011341A1

公开(公告)日：2020-01-09

申请号：US16491201

申请日：2018-03-08

Applicant: Robert Bosch GmbH ,  Danfoss Commercial Compressors

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

IPC: F04D29/056 ,  F01D25/12 ,  F16C3/02 ,  F16C17/02 ,  F16C33/12

Abstract: The bearing arrangement includes a one-piece gas bearing sleeve (32) configured to rotatably support the drive shaft (4) and made in molybdenum or in a molybdenum alloy, the one-piece gas bearing sleeve (32) including a radial bearing surface (33) configured to Surround the drive shaft (4).