公开(公告)号：US11125216B2

公开(公告)日：2021-09-21

申请号：US16455888

申请日：2019-06-28

Applicant: Danfoss A/S

Inventor： Tianlei Li ,  Lin Sun ,  Mihai Bogdan Dobrica

IPC: F16J15/3288 ,  F04B7/00 ,  F04B43/00 ,  F25B11/04

Abstract: A centrifugal compressor for HVAC application includes a rotary component rotatable about an axis, a static component, and a brush seal fixed to one of the static component and the rotary component. The brush seal includes bristles that contact the other of the static component and the rotary component.

公开(公告)号：US10830509B2

公开(公告)日：2020-11-10

申请号：US15322698

申请日：2014-07-03

Applicant: DANFOSS A/S

Inventor： William Turner Thornton ,  Mogens Rasmussen ,  Lin Sun

IPC: F25B31/00 ,  F25B1/10 ,  F25B5/02 ,  F25B49/02 ,  F25B1/053

Abstract: An example refrigerant system according to an exemplary aspect of this disclosure includes, among other things, a refrigerant loop having at least a condenser, an evaporator, and a compressor. The compressor includes a motor in communication with a variable speed drive. The system further includes a cooling circuit including a pressure regulator downstream of a heat exchanger, the heat exchanger absorbing heat from the variable speed drive.

公开(公告)号：US20200313599A1

公开(公告)日：2020-10-01

申请号：US16308878

申请日：2017-03-06

Applicant: Danfoss A/S

Inventor： Lin Sun ,  HuaiYu Lin

IPC: H02P29/50 ,  F25B31/02 ,  F04B49/20 ,  H02P25/22 ,  H02P27/06

Abstract: Compressors in a refrigerant loop are driven by variable frequency drives. The variable frequency drives are configured to demand current from an alternating current power source at different phases relative to one another such that at least one current harmonic frequency at the alternating current power source is cancelled.

公开(公告)号：US20180231006A1

公开(公告)日：2018-08-16

申请号：US15892872

申请日：2018-02-09

Applicant: Danfoss A/S

Inventor： Lin Sun

IPC: F04D17/12 ,  F04D29/42 ,  F04D29/058 ,  F04D29/057 ,  F04D29/58

CPC classification number: F04D17/122 ,  F04D17/12 ,  F04D25/06 ,  F04D27/0276 ,  F04D29/057 ,  F04D29/058 ,  F04D29/4206 ,  F04D29/5806 ,  F04D29/5826 ,  F25B31/006 ,  F25B49/022 ,  F25B2400/13

Abstract: A compressor operates within a system having a cooling capacity below 60 tons. The compressor includes a hermetically sealed housing and a drive module and aero module within the housing. The drive module includes a motor, a rotor, and oil free bearings. The aero module has a centrifugal impeller driven by the drive module to compress a working fluid. The compressor is arranged such that the working fluid flows through the drive module before reaching the aero module.