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.

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.