公开(公告)号：US20220213896A1

公开(公告)日：2022-07-07

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: F04D29/16 ,  F04D17/10

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：US20220120189A1

公开(公告)日：2022-04-21

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

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：US11143193B2

公开(公告)日：2021-10-12

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 ,  F04D17/10 ,  F25B1/053

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：US20240426318A1

公开(公告)日：2024-12-26

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.