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：US20210131431A1

公开(公告)日：2021-05-06

申请号：US17087954

申请日：2020-11-03

Applicant: Danfoss Commercial Compressors

Inventor： Remi Bou Dargham ,  Arnaud Daussin ,  Dominique Gross

IPC: F04C18/02 ,  F04C23/00

Abstract: The scroll compressor comprises a fixed scroll having a fixed end plate and a fixed spiral wrap extending from the fixed end plate; an orbiting scroll (9) having an orbiting end plate and an orbiting spiral wrap extending from the orbiting end plate, the fixed spiral wrap and the orbiting spiral wrap meshing with each other to form compression chambers; a vertical drive shaft (19) having a crankpin (21) at an upper end portion of the vertical drive shaft (19), the crankpin (21) including an outer circumferential surface (23) cooperating with an orbiting scroll bearing (24). The crankpin (21) includes a recess (25) formed in an axial end face (26) of the crankpin (21), the recess (25) and an upper portion (27) of the outer circumferential surface (23) defining therebetween a circumferential wall (28) extending along at least a part of the circumference of the crankpin (21), the circumferential wall (28) being deformable in a radial direction during operation of the scroll compressor.

公开(公告)号：US10753360B2

公开(公告)日：2020-08-25

申请号：US16071155

申请日：2017-02-15

Applicant: Danfoss Commercial Compressors

Inventor： Remi Bou Dargham ,  David Genevois ,  Dominique Gross

IPC: F01C19/08 ,  F04C18/02 ,  F04C29/00 ,  F04C27/00 ,  F04C23/00

Abstract: The scroll compression device includes a first scroll element (11) having a first base plate (13) and a first spiral wrap (14); a second scroll element (12) having a second base plate (15) and a second spiral wrap (16), one of the first and second scroll elements (11, 12) being configured to perform an orbiting movement in relation to the other one of the first and second scroll elements, the first and second scroll elements (11, 12) intermeshing with each other and delimiting compression chambers (17); and a sealing device (28) arranged in an end face (19) of the first spiral wrap (14) and having a sealing surface configured to cooperate with the second base plate (15). The sealing device (28) is configured to allow fluid flow from an upstream compression chamber to a downstream compression chamber through the sealing surface when the pressure in the upstream compression chamber exceeds the pressure in the downstream compression chamber, and the sealing device (28) is configured to prevent fluid flow from a downstream compression chamber to an upstream compression chamber through the sealing surface when the pressure in the downstream compression chamber exceeds the pressure in the upstream compression chamber.

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：US20190063432A1

公开(公告)日：2019-02-28

申请号：US16108693

申请日：2018-08-22

Applicant: Danfoss Commercial Compressors

Inventor： Sebastien Denis ,  David Genevois ,  Julien Lavy

IPC: F04C18/02 ,  F04C29/12

Abstract: The scroll compressor comprises a fixed scroll element comprising a fixed end plate (13) and a fixed spiral wrap (14); an orbiting scroll element comprising an orbiting end plate and an orbiting spiral wrap (16), the fixed and orbiting spiral wraps (14, 16) being intermeshed with each other to define pairs of compression pockets, a radial inner pair of compression pockets comprising a direct pocket (17.1) and an indirect pocket (17.2); a central main discharge port (18) formed in the fixed end plate (13) and configured to communicate the direct pocket (17.1) with a discharge pressure volume; and an auxiliary discharge port (26) formed in the fixed end plate (13) at a position close to an outer wall side (14.2) of the fixed spiral wrap (14) and adjacent the inner end (14.4) of the fixed spiral wrap (14). The auxiliary discharge port (26), during orbiting movement of the orbiting scroll element (12), is at least partially uncovered by the orbiting spiral wrap (16) to communicate the indirect pocket (17.2) with the discharge pressure volume.

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.

公开(公告)号：US20180142694A1

公开(公告)日：2018-05-24

申请号：US15735301

申请日：2016-06-20

Applicant: DANFOSS COMMERCIAL COMPRESSORS

Inventor： Arnaud Daussin ,  Patrice Bonnefoi ,  Nicolas Nouyrigat

IPC: F04D29/10 ,  F04D29/051 ,  F04D29/056

CPC classification number: F04D29/102 ,  F04D17/12 ,  F04D17/122 ,  F04D25/06 ,  F04D29/051 ,  F04D29/053 ,  F04D29/056 ,  F04D29/286

Abstract: The centrifugal compressor includes an hermetic housing; a drive shaft (4); a first and a second compression stage (8, 9) configured to compress a refrigerant, the first and second compression stages (8, 9) respectively including a first and a second impeller (18, 19), the first and second impellers (18, 19) being connected to the drive shaft (4) and being arranged in a back-to-back configuration; a radial annular groove (27) formed between the back-sides (25, 26) of the first and second impellers (18, 19); an inter-stage sealing arrangement (35) provided between the first and second compressor stages (8, 9) and in the radial annular groove (27); a radial bearing arrangement configured to rotatably support the drive shaft (4); and a thrust bearing arrangement configured to limit an axial movement of the drive shaft (4) during operation. The diameter of the inter-stage sealing arrangement (35) is configured to minimize the amplitude of the axial load applying on the thrust bearing arrangement during operation of the centrifugal compressor (2).

公开(公告)号：US09551351B2

公开(公告)日：2017-01-24

申请号：US13690731

申请日：2012-11-30

Applicant: DANFOSS COMMERCIAL COMPRESSORS

Inventor： Jean De Bernardi ,  Patrice Bonnefoi ,  Xavier Durand ,  Fabien Gall ,  Jean-Francois Le Coat

IPC: F04D29/063 ,  F04C23/00 ,  F04C28/02 ,  F04B39/02 ,  F04B41/06 ,  F04B49/02 ,  F25B31/00 ,  F04C28/06 ,  F04C29/02

CPC classification number: F04D29/063 ,  F04B39/0207 ,  F04B39/0238 ,  F04B41/06 ,  F04B49/02 ,  F04C23/001 ,  F04C23/008 ,  F04C28/02 ,  F04C28/06 ,  F04C29/021 ,  F04C2270/24 ,  F25B31/004 ,  F25B2400/075 ,  F25B2600/0253 ,  F25B2700/03 ,  Y02B30/741

Abstract: A compression device includes a first compressor and a second compressor mounted in parallel, each compressor including a leakproof enclosure including a low pressure portion containing a motor and an oil sump, an oil level equalization conduit putting into communication the oil sumps of the first and second compressors, and control means adapted for controlling the starting and the stopping of the first and second compressors. The first compressor includes first detection means coupled with the control means and adapted for detecting an oil level in the oil sump of the first compressor. The control means are adapted for controlling the stopping of the second compressor when the oil level detected by the first detection means falls below a first predetermined value.

Abstract translation: 压缩装置包括并联安装的第一压缩机和第二压缩机，每个压缩机包括防漏外壳，其包括含有马达和油底壳的低压部分，油位平衡导管将第一和第二压缩机 压缩机和适于控制第一和第二压缩机的启动和停止的控制装置。 第一压缩机包括与控制装置联接并适于检测第一压缩机的油底壳中的油位的第一检测装置。 当第一检测装置检测到的油位低于第一预定值时，控制装置适于控制第二压缩机的停止。

公开(公告)号：US08974190B2

公开(公告)日：2015-03-10

申请号：US13715214

申请日：2012-12-14

Applicant: Danfoss Commercial Compressors

Inventor： Patrice Bonnefoi ,  Feifei Wang

IPC: F04C18/00 ,  F04B49/06 ,  F04C28/06 ,  F04C28/08 ,  F04C29/02 ,  F04C18/02 ,  F04C23/00

CPC classification number: F04C18/00 ,  F04C18/0215 ,  F04C23/008 ,  F04C28/06 ,  F04C28/08 ,  F04C29/025

Abstract: The compressor includes a sealed enclosure containing a compression stage, an electric motor having a stator and a rotor, an oil pump rotationally coupled to the rotor, including an oil inlet port connected to an oil sump, and control means arranged to command the operation of the motor in a start-up mode in which the rotor is rotated at a first speed of rotation included in a first speed range, and a normal operating mode in which the rotor is rotated at a second speed of rotation included in a second speed range higher than the first speed range. The compressor includes an oil injection device having an oil injection duct connected to a first oil outlet port of the oil pump and arranged to supply the compression stage with oil.

Abstract translation: 该压缩机包括：包含压缩级的密封外壳，具有定子和转子的电动马达，与该转子相连接的包括连接到油底壳的进油口的油泵，以及控制装置， 所述电动机处于其中所述转子以包括在第一速度范围内的第一转速旋转的启动模式，以及所述转子以包括在第二速度范围内的第二转速旋转的正常操作模式 高于第一速度范围。 压缩机包括注油装置，该注油装置具有连接到油泵的第一出油口的喷油管道，并设置成向压缩级供油。