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：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：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.