公开(公告)号：US20250163937A1

公开(公告)日：2025-05-22

申请号：US18948867

申请日：2024-11-15

Applicant: Danfoss A/S

Inventor： Brenden Richman ,  Karthik Krishna ,  Jin Yan

IPC: F04D29/66 ,  F04D17/10 ,  F04D29/44 ,  F25B31/02

Abstract: A refrigerant compressor includes an impeller rotatable about an axis and a volute. A diffuser is axially between a first wall and a second wall, and radially between an outlet of the impeller and the volute. A diffuser plate provides the second wall, which includes a plurality of quarter wave tubes, each of the plurality of quarter wave tubes including a cylindrical blind hole extending radially from the second wall.

公开(公告)号：US11988420B2

公开(公告)日：2024-05-21

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

CPC classification number: F25B31/026 ,  F04D25/06 ,  H02K1/30 ,  H02K5/207 ,  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.

公开(公告)号：US20230279865A1

公开(公告)日：2023-09-07

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

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

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：US11739654B2

公开(公告)日：2023-08-29

申请号：US17422407

申请日：2020-02-21

Applicant: Danfoss A/S

Inventor： Alonso Perez ,  Lin Xiang Sun ,  Jin Yan ,  Tianlei Li

IPC: F01D11/12 ,  F01D11/02 ,  F01D15/00 ,  F16J15/447 ,  F25B31/00

CPC classification number: F01D11/122 ,  F01D11/02 ,  F01D15/005 ,  F16J15/447 ,  F25B31/00 ,  F05D2240/55

Abstract: A compressor according to an exemplary aspect of the present disclosure includes, among other things, a rotor configured to rotate with respect to a stator, the stator having an abradable portion. At least one labyrinth seal is between the rotor and the stator, wherein the labyrinth seal comprises a plurality of teeth extending from the rotor toward the abradable portion.

公开(公告)号：US20220341437A1

公开(公告)日：2022-10-27

申请号：US17640536

申请日：2020-11-11

Applicant: Danfoss A/S

Inventor： Alonso Perez ,  Tianlei Li ,  Jin Yan

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

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：US20210108838A1

公开(公告)日：2021-04-15

申请号：US16599982

申请日：2019-10-11

Applicant: Danfoss A/S

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

IPC: F25B41/00 ,  F25B1/10

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：US20200208642A1

公开(公告)日：2020-07-02

申请号：US16515668

申请日：2019-07-18

Applicant: Danfoss A/S

Inventor： Jin Yan ,  Lin Xiang Sun ,  Arnold Martin Schaefer ,  Ruiguo Gao

IPC: F04D27/02 ,  F25B1/053 ,  F04D17/10

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, an impeller arranged in a main flow path and including a plurality of vanes. The impeller is configured to rotate about an axis. A channel is outside the main flow path. A first orifice fluidly couples the channel to the main flow path upstream of the vanes, and a second orifice fluidly couples the channel to the main flow path downstream of leading edges of the vanes.

公开(公告)号：US12025154B2

公开(公告)日：2024-07-02

申请号：US18032854

申请日：2021-11-17

Applicant: DANFOSS A/S

Inventor： Jin Yan ,  Kevin Patrick Hartzog ,  Tianli Zhang

IPC: F04D29/44 ,  F04D17/10 ,  F04D29/66

CPC classification number: F04D29/441 ,  F04D17/10 ,  F04D29/661

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a diffuser including grooves configured to resist backflow of refrigerant. The compressor is used in a heating, ventilation, and air conditioning (HVAC) chiller system, for example.

公开(公告)号：US11988221B2

公开(公告)日：2024-05-21

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：US20230400038A1

公开(公告)日：2023-12-14

申请号：US18032854

申请日：2021-11-17

Applicant: DANFOSS A/S

Inventor： Jin Yan ,  Kevin Patrick HARTZOG ,  Tianli ZHANG

IPC: F04D29/44 ,  F04D17/10 ,  F04D29/66

CPC classification number: F04D29/441 ,  F04D17/10 ,  F04D29/661

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a diffuser including grooves configured to resist backflow of refrigerant. The compressor is used in a heating, ventilation, and air conditioning (HVAC) chiller system, for example.