公开(公告)号：US20230087561A1

公开(公告)日：2023-03-23

申请号：US17795358

申请日：2021-03-16

Applicant: DANFOSS A/S

Inventor： Lin Xiang SUN ,  Tianlei LI ,  Brandon Keith PRITCHARD

IPC: F25B31/00 ,  F04B39/06 ,  F25B41/20 ,  F25B5/02 ,  H02K11/33 ,  H02P1/28 ,  H02P1/52 ,  F04B35/04 ,  F25B1/053 ,  F25B1/10

Abstract: This disclosure relates to refrigerant compressors, and, in particular, relates to cooling for the power electronics of such compressors. An example refrigerant system includes a main refrigerant loop in communication with a condenser, an evaporator, and a compressor. The refrigerant system further includes at least one cooling line configured to direct refrigerant from the main refrigerant loop to cool a chamber containing electronic components. A method is also disclosed.

公开(公告)号：US20240424587A1

公开(公告)日：2024-12-26

申请号：US18274061

申请日：2022-02-23

Applicant: Danfoss A/S

Inventor： Tianlei LI ,  Lin Xiang SUN

IPC: B23K1/00 ,  F01D5/04

Abstract: In some aspects, the techniques described herein relate to a method of manufacturing a shrouded impeller, including: arranging a shell relative to an impeller, wherein the impeller includes a plurality of blades, wherein the shell includes a plurality of slots, and wherein the arranging step includes aligning each of the slots with a tip of a respective one of the blades of the impeller; applying brazing paste to each of the tips by using the slots to direct the brazing paste to the tips; arranging a shroud relative to the impeller; and joining the impeller and shroud using a brazing technique.

公开(公告)号：US20240381595A1

公开(公告)日：2024-11-14

申请号：US18692961

申请日：2022-09-09

Applicant: DANFOSS A/S

Inventor： Myongsok SONG ,  Tianlei LI ,  Hunter KRAMER

IPC: H05K7/20 ,  F25B31/00

Abstract: A refrigerant system according to an example of this disclosure includes a main refrigerant loop in communication with a condenser, an evaporator, and a compressor. A heat exchanger is arranged to cool electronic components. The heat exchanger has a cooling line, which is configured to receive refrigerant from the main refrigerant loop and a heat sink in communication with air surrounding the electronic components.

公开(公告)号：US20230081243A1

公开(公告)日：2023-03-16

申请号：US17792166

申请日：2020-06-30

Applicant: DANFOSS A/S

Inventor： Tianlei LI ,  Delvis Anibal GONZALEZ

IPC: H02K1/28 ,  F25B31/02

Abstract: An electric machine according to an exemplary aspect of the present disclosure includes, among other things, an electric machine including a rotor having a sleeve radially outside a permanent magnet. Further, the sleeve includes at least one magnetic arc segment and at least one non-magnetic arc segment.

公开(公告)号：US20220381350A1

公开(公告)日：2022-12-01

申请号：US17791575

申请日：2020-12-09

Applicant: DANFOSS A/S

Inventor： Mihai B. DOBRICA ,  Tianlei LI

IPC: F16J15/44

Abstract: A refrigerant compressor according to an exemplary aspect of the present disclosure includes, among other things, a floating ring seal having a nose configured to contact a housing. Further, a low friction coating including carbon nanotubes (CNTs) is applied to one or both of the nose and the housing. In another aspect of this disclosure, the floating ring seal has first and second noses configured to contact the housing, and the first nose is radially spaced-apart from the second nose.