公开(公告)号：US20230235748A1

公开(公告)日：2023-07-27

申请号：US17994453

申请日：2022-11-28

Applicant: Danfoss A/S

Inventor： Jin Yan ,  Tadeu Mendonca Fagundes ,  Ryan Dingman

IPC: F04D29/28

CPC classification number: F04D29/284 ,  F05D2240/303 ,  F05D2240/304

Abstract: This disclosure relates to a refrigerant compressor including an impeller. The impeller has a blade with a wavy contour. The wavy contour reduces flow separation relative to smooth, non-wavy blades. In particular, the disclosed wavy contour creates smaller trailing edge vortexes adjacent the blades. In turn, the wavy contour of the blades improves overall compressor efficiency.

公开(公告)号：US11560901B2

公开(公告)日：2023-01-24

申请号：US17640536

申请日：2020-11-11

Applicant: Danfoss A/S

Inventor： Alonso Perez ,  Tianlei Li ,  Jin Yan

IPC: F25B1/10 ,  F04D29/44 ,  F04D25/06 ,  F25B1/053

Abstract: A compressor according to an exemplary aspect of the present disclosure includes, among other things, a mixed compression stage having both axial and radial components arranged along a main flow path, and a radial compression stage having an impeller with a plurality of vanes arranged in the main flow path downstream of the mixed compression stage. The impeller is configured to rotate about an axis and has an outlet downstream of the vanes. A movable diffuser is arranged at the outlet, and the movable diffuser is configured to vary an area of the outlet.

公开(公告)号：US12276286B2

公开(公告)日：2025-04-15

申请号：US18274064

申请日：2022-04-12

Applicant: Danfoss A/S

Inventor： Tianli Zhang ,  Jin Yan ,  Jose Manuel Urcia

IPC: F04D29/44 ,  F04D17/10 ,  F04D29/28

Abstract: In some aspects, the techniques described herein relate to a refrigerant compressor, including: a shrouded impeller including a passageway permitting refrigerant to flow from a location radially outside a shroud of the shrouded impeller to a location radially inside the shroud.

公开(公告)号：US12146501B2

公开(公告)日：2024-11-19

申请号：US18197782

申请日：2023-05-16

Applicant: Danfoss A/S

Inventor： James Wilson ,  Jin Yan ,  Lin Xiang Sun ,  Ruiguo Gao ,  Brenden Richman

IPC: F01D11/02 ,  F04D17/10 ,  F04D29/16 ,  F01D5/18 ,  F01D5/28 ,  F04D29/10 ,  F16J15/447

Abstract: In some aspects, the techniques described herein relate to a refrigerant compressor, including: a stator; a rotor configured to rotate with respect to the stator; and at least one step seal between the rotor and the stator, wherein the step seal includes a first tooth and a second tooth extending from the rotor toward the stator, wherein a downstream surface of the first tooth and an upstream surface of the second tooth are arranged at an angle relative to one another, wherein the angle is less than 90°.

公开(公告)号：US20240247686A1

公开(公告)日：2024-07-25

申请号：US18401825

申请日：2024-01-02

Applicant: Danfoss A/S

Inventor： Jin Yan ,  Karthik Krishna

IPC: F16C32/04 ,  F25B31/02 ,  H02K7/09

CPC classification number: F16C32/0474 ,  F25B31/026 ,  H02K7/09 ,  F16C2360/00

Abstract: A refrigerant compressor may include an auxiliary bearing arranged about a shaft. An interface of the auxiliary bearing and the shaft includes at least one groove.

公开(公告)号：US20230392836A1

公开(公告)日：2023-12-07

申请号：US18032890

申请日：2021-11-11

Applicant: DANFOSS A/S

Inventor： Tadeu Mendonca FAGUNDES ,  Jin Yan ,  Lin Xiang Sun

IPC: F25B31/00 ,  F04D29/58 ,  F04D25/06 ,  F04D17/10

CPC classification number: F25B31/006 ,  F04D29/5806 ,  F04D25/06 ,  F04D17/10

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a cooling jacket including a plurality of perforations configured to cause refrigerant flowing through the perforations to form impingement jets and further configured to direct the impingement jets onto a surface adjacent a stator. The refrigerant compressor may be used in a heating, ventilation, and air conditioning (HVAC) chiller system, for example.

公开(公告)号：US11692557B2

公开(公告)日：2023-07-04

申请号：US17546161

申请日：2021-12-09

Applicant: Danfoss A/S

Inventor： James Wilson ,  Jin Yan ,  Lin Xiang Sun ,  Ruiguo Gao ,  Brenden Richman

IPC: F01D11/02 ,  F04D29/16 ,  F04D17/10 ,  F01D5/18 ,  F01D5/28 ,  F04D29/10 ,  F16J15/447

CPC classification number: F04D29/162 ,  F04D17/10 ,  F01D5/186 ,  F01D5/189 ,  F01D5/28 ,  F01D11/02 ,  F04D29/102 ,  F05D2240/55 ,  F16J15/4472

Abstract: In some aspects, the techniques described herein relate to a refrigerant compressor, including: a stator; a rotor configured to rotate with respect to the stator; and at least one step seal between the rotor and the stator, wherein the step seal includes a first tooth and a second tooth extending from the rotor toward the stator, wherein a downstream surface of the first tooth and an upstream surface of the second tooth are arranged at an angle relative to one another, wherein the angle is less than 90°.

公开(公告)号：US11486618B2

公开(公告)日：2022-11-01

申请号：US16599982

申请日：2019-10-11

Applicant: Danfoss A/S

Inventor： Arnold Martin Schaefer ,  Jin Yan ,  Alonso Misael Perez

IPC: F25B1/10 ,  F04D29/42 ,  F25B41/40 ,  F04D1/02 ,  F04D17/12 ,  F04D23/00 ,  F04D29/28

Abstract: This disclosure relates to a compressor having at least two compression stages. In particular, an exemplary compressor includes a first radial compression stage arranged along an axis, a second radial compression stage arranged along the axis, and a connector fluidly connecting an outlet of the first radial compression stage to an inlet of the second radial compression stage. The connector has a plurality of sections arranged about the axis. The compressor may be a refrigerant compressor used in a heating, ventilation, and air conditioning (HVAC) chiller system.

公开(公告)号：US20220243966A1

公开(公告)日：2022-08-04

申请号：US17575708

申请日：2022-01-14

Applicant: DANFOSS A/S

Inventor： Jin Yan

IPC: F25B31/02 ,  F04D17/10 ,  F04D29/28

Abstract: In some aspects, the techniques described herein relate to a refrigerant compressor, including an impeller including a plurality of main blades and first and second splitter blades between adjacent main blades.

公开(公告)号：US20220243965A1

公开(公告)日：2022-08-04

申请号：US17574813

申请日：2022-01-13

Applicant: DANFOSS A/S

Inventor： Tianli Zhang ,  Jin Yan

IPC: F25B31/02 ,  F04D25/06 ,  H02K1/30 ,  H02K5/20 ,  H02K9/06

Abstract: In some aspects, the techniques described herein relate to a refrigerant compressor, including: an impeller; a shaft; a motor configured to rotate the impeller via the shaft, wherein the motor includes a stator and a rotor; and a housing surrounding the motor, wherein the housing includes a first inlet configured to permit fluid to enter the housing and flow along a stator cooling line and a second inlet configured to permit fluid to enter the housing and flow a rotor cooling line, and wherein the first inlet is separate from the second inlet.