公开(公告)号：US20250012489A1

公开(公告)日：2025-01-09

申请号：US18712375

申请日：2023-01-31

Applicant: Danfoss A/S

Inventor： Sushank THOTAKOORI ,  Marius DRAGUT ,  Lin Xiang SUN ,  Brandon Keith PRITCHARD ,  Wenchao CAO ,  Ruiguo GAO ,  Joshua David FLESCH

IPC: F25B31/00 ,  B33Y10/00 ,  F25B49/02

Abstract: A housing for a refrigerant compressor may include a first portion made of a metallic material and surrounding moving parts of the refrigerant compressor. The housing may further include a second portion mounted to the first portion and surrounding non-moving, electronic parts of the refrigerant compressor. The second portion is made of a plastic material.

公开(公告)号：US20220385138A1

公开(公告)日：2022-12-01

申请号：US17791586

申请日：2020-02-20

Applicant: DANFOSS A/S

Inventor： Delvis Anibal GONZALEZ ,  Lin Xiang SUN

IPC: H02K7/09 ,  F25B31/02 ,  F16C32/04

Abstract: This disclosure relates to an axial magnetic bearing for a centrifugal refrigerant compressor, and a corresponding system and method. A centrifugal refrigerant compressor system according to an exemplary aspect of the present disclosure includes, among other things, an impeller connected to a shaft, and a magnetic bearing system supporting the shaft. The magnetic bearing system includes an axial magnetic bearing, which itself includes a first permanent magnet configured to generate a first bias flux, a second permanent magnet axially spaced-apart from the first permanent magnet and configured to generate a second bias flux, and an electromagnet. The electromagnet includes a coil arranged radially outward of the first and second permanent magnets, and the electromagnet is configured to selectively generate either a first control flux or a second control flux to apply a force to the shaft in a first axial direction or second axial direction opposite the first axial direction, respectively.

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.