公开(公告)号：US12241670B2

公开(公告)日：2025-03-04

申请号：US18182764

申请日：2023-03-13

Applicant: Danfoss Commercial Compressors

Inventor： Thierry Legay ,  Patrice Bonnefoi

IPC: F25B7/00 ,  F04B41/06 ,  F04C2/02 ,  F04C11/00 ,  F25B31/00 ,  F25B41/20

Abstract: The multi-compressor system has a plurality of parallelly coupled compressors; inlet connection lines each connected to a refrigerant suction fitting of a respective compressor; outlet connection lines each connected to a refrigerant discharge fitting of a respective compressor; a common oil balancing line and balancing connection lines each connecting the common oil balancing line to an oil balancing connection of a respective compressor; and spring-loaded normally-open valves each being arranged within a respective balancing connection line or within an oil balancing connection of a respective compressor and each being configured to close when a pressure difference between a pressure prevailing in the low pressure volume of the respective compressor and a pressure prevailing in the common oil balancing line reaches a predetermined value.

公开(公告)号：US20250052242A1

公开(公告)日：2025-02-13

申请号：US18720744

申请日：2022-12-08

Applicant: DANFOSS COMMERCIAL COMPRESSORS

Inventor： Patrice BONNEFOI ,  Florent BERGEON ,  Gabriel STREDA ,  Brian ANGEL ,  Gang YAO ,  Qian HU

IPC: F04C23/00 ,  F04C29/02

Abstract: A scroll compressor including a hermetic casing provided with a suction inlet; a compression unit; a drive shaft configured to drive an orbiting scroll of the compression unit in an orbital movement; an electric motor coupled to the drive shaft; an oil sump; a refrigerant guiding device configured to force a main part of a refrigerant, entering the scroll compressor through the suction inlet, to flow downwardly through the electric motor, before reaching the compression unit; and an oil sump fairing arranged between a lower end of the electric motor and a free surface of oil stored in the oil sump, the oil sump fairing being configured to prevent a refrigerant flow, emerging from the lower end of the electric motor, to directly impact the free surface of the oil stored in the oil sump.

公开(公告)号：US20250003661A1

公开(公告)日：2025-01-02

申请号：US18753330

申请日：2024-06-25

Applicant: Danfoss Commercial Compressors

Inventor： Patrice BONNEFOI ,  Yves ROSSON ,  Gabriel STREDA ,  Alexis DELORME ,  Jean-Jacques LAISSUS

IPC: F25B49/02 ,  F25B31/00 ,  F25B41/20

Abstract: A method for managing oil in a running multi-compressor refrigeration system including a controller and a multi-compressor device, includes monitoring an oil level in the oil sump of each compressor through the respective oil level detection device; detecting that a lack of oil situation occurs in a running compressor, if the oil level in said running compressor reaches a predetermined threshold condition; performing an oil managing action if a lack of oil situation is detected for a running compressor, the oil managing action being based on a changing of ON/OFF configurations of the compressors in the multi-compressor device and including performing an oil balancing action, if more than a half of the total number of compressors are running, or performing an oil returning action, if a half or less of the total number of compressors are running.

公开(公告)号：US12031538B2

公开(公告)日：2024-07-09

申请号：US17423555

申请日：2020-01-27

Applicant: Danfoss Commercial Compressors

Inventor： David Genevois ,  Remi Bou Dargham ,  Cyril Montes ,  Arnaud Daussin ,  Dominique Gross

IPC: F04C23/00 ,  F04C18/02 ,  F04C23/02

CPC classification number: F04C23/008 ,  F04C18/0253 ,  F04C23/02 ,  F04C2230/231 ,  F04C2240/30 ,  F04C2240/809

Abstract: The scroll compressor (2) including a hermetic enclosure (3), a compression unit (11) configured to compress refrigerant, and an electric motor (16) configured to drive the compression unit (11) via a drive shaft (15), the hermetic enclosure (3) including a midshell (4), an upper cap (5) and a baseplate (6), the baseplate (6) including a mounting base (24) having a plate shape and including a central portion, and a cylindrical rim surrounding the central portion and extending upwardly, the cylindrical rim (28) being secured to the mounting base (24) by a double-welded T-joint (29), the double-welded T-joint (29) including an inner welding seam connecting an inner surface of the cylindrical rim (28) to the mounting base (24), and an outer welding seam connecting an outer surface of the cylindrical rim (28) to the mounting base (24).

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：US11841013B2

公开(公告)日：2023-12-12

申请号：US17771851

申请日：2020-11-02

Applicant: DANFOSS COMMERCIAL COMPRESSORS

Inventor： Remi Bou Dargham ,  Arnaud Daussin ,  David Genevois

IPC: F04C18/02 ,  F04C23/00

CPC classification number: F04C18/0215 ,  F04C18/0284 ,  F04C23/008

Abstract: The scroll compressor includes a fixed scroll (8) having a fixed end plate (11) and a fixed spiral wrap (12) extending from the fixed end plate (11); an orbiting scroll (9) having an orbiting base plate (14) and an orbiting spiral wrap (15) extending from a first face of the orbiting base plate (14), the orbiting spiral wrap (15) of the orbiting scroll (9) meshing with the fixed spiral wrap (12) of the fixed scroll (8) to form compression chambers (18), the orbiting base plate (14) having a flange portion (16) radially extending on at least part of the circumference of the orbiting base plate (14) and beyond an outer wall surface of the orbiting spiral wrap (15); and a first and a second axial stabilizing arrangement (29, 31) configured to axially stabilize the orbiting scroll (9), the first axial stabilizing arrangement (29) being formed between the flange portion (16) of the orbiting base plate (14) and the fixed scroll (8), and the second axial stabilizing arrangement (31) being formed between a portion of the orbiting spiral wrap (15) of the orbiting scroll (9) and the fixed end plate (11) of the fixed scroll (8).

公开(公告)号：US20220163036A1

公开(公告)日：2022-05-26

申请号：US17526190

申请日：2021-11-15

Applicant: Danfoss Commercial Compressors

Inventor： Arnaud Daussin ,  David Genevois ,  Remi Bou Dargham

IPC: F04C15/00 ,  F04C2/02

Abstract: The scroll compressor (1) includes a fixed scroll (7); an orbiting scroll (8); a support arrangement (5) including a thrust bearing surface (9) on which is slidably mounted the orbiting scroll (8); a rotation preventing device configured to prevent rotation of the orbiting scroll (8) with respect to the fixed scroll (7), the rotation preventing device including a plurality of orbital discs (28) respectively rotatably mounted in circular receiving cavities (29) provided on the support arrangement (5), each orbital disc (28) being provided with an outer circumferential bearing surface (31) configured to cooperate with an inner circumferential bearing surface (32) provided on the respective circular receiving cavity (29); and a lubrication system configured to lubricate the inner and outer circumferential bearing surfaces (32, 31) with oil supplied from an oil sump (36), the lubrication system including a plurality of oil reservoirs (43) each arranged in a bottom surface of a respective circular receiving cavity, and a plurality of oil stirring arrangements each configured to stir oil contained in a respective oil reservoir (43).

公开(公告)号：US20220074412A1

公开(公告)日：2022-03-10

申请号：US17423555

申请日：2020-01-27

Applicant: Danfoss Commercial Compressors

Inventor： David Genevois ,  Remi Bou Dargham ,  Cyril Montes ,  Arnaud Daussin ,  Dominique Gross

IPC: F04C23/00 ,  F04C18/02 ,  F04C23/02

Abstract: The scroll compressor (2) including a hermetic enclosure (3), a compression unit (11) configured to compress refrigerant, and an electric motor (16) configured to drive the compression unit (11) via a drive shaft (15), the hermetic enclosure (3) including a midshell (4), an upper cap (5) and a baseplate (6), the baseplate (6) including a mounting base (24) having a plate shape and including a central portion, and a cylindrical rim surrounding the central portion and extending upwardly, the cylindrical rim (28) being secured to the mounting base (24) by a double-welded T-joint (29), the double-welded T-joint (29) including an inner welding seam connecting an inner surface of the cylindrical rim (28) to the mounting base (24), and an outer welding seam connecting an outer surface of the cylindrical rim (28) to the mounting base (24).

公开(公告)号：US10830045B2

公开(公告)日：2020-11-10

申请号：US15955794

申请日：2018-04-18

Applicant: Danfoss Commercial Compressors

Inventor： Philippe Perisse ,  Patrice Oliveau

IPC: F01C1/02 ,  F04C23/00 ,  F01C21/10 ,  F01C21/00 ,  F04C18/02 ,  F04B39/00 ,  F01C21/02

Abstract: The scroll compressor (2) comprises a hermetic enclosure (3) comprising a midshell (4), an upper cap (5) and a baseplate (6), the baseplate (6) comprising a mounting base (32) having a plate shape and including a central opening (33), and a central cap (28) arranged within the central opening (33), the central cap (28) comprising a concave portion (29) and a first cylindrical rim portion (30) extending upwardly and having an outer diameter substantially corresponding to an inner diameter of the midshell (4); a compression unit (11) configured to compress refrigerant; and an electric motor (21) configured to drive the compression unit (11) via a drive shaft (19). The mounting base (32) comprises a second cylindrical rim portion (34) extending upwardly and surrounding the central opening (33), wherein an inner diameter of the second cylindrical rim portion (34) substantially corresponds to the inner diameter of the midshell (4) and to an outer diameter of the first cylindrical rim portion (30).

公开(公告)号：US09506470B2

公开(公告)日：2016-11-29

申请号：US13690833

申请日：2012-11-30

Applicant: DANFOSS COMMERCIAL COMPRESSORS

Inventor： Pierre Ginies ,  Dominique Gross ,  Christophe Ancel ,  Yves Rosson ,  Philippe Dugast

IPC: F16K15/14 ,  F16K15/06 ,  F16K17/04 ,  F01C1/02 ,  F01C1/063 ,  F03C2/00 ,  F04C2/02 ,  F04C29/12 ,  F04C23/00 ,  F04C18/02

CPC classification number: F04C29/124 ,  F04C18/0207 ,  F04C23/008 ,  F04C29/126

Abstract: The scroll refrigeration compressor according to the invention includes a sealed enclosure at least partially defining a discharge chamber designed to be connected to a discharge line, and a discharge valve attached on the sealed enclosure and fluidly connected to the discharge chamber. The discharge valve includes a valve body, a valve seat, and a discharge check valve movable between a covering position and a released position. The discharge valve includes deflection means positioned in the valve body and arranged to orient the flow of refrigerant coming from the discharge line at least partially toward the periphery of the discharge check valve.

Abstract translation: 根据本发明的涡旋式制冷压缩机包括至少部分地限定设计成连接到排出管线的排放室的密封外壳和附接在密封外壳上并且流体连接到排出室的排放阀。 排出阀包括阀体，阀座和可在覆盖位置和释放位置之间移动的排出止回阀。 排放阀包括定位在阀体中的偏转装置，其布置成使来自排出管线的制冷剂的流动至少部分地朝向排放止回阀的周边。