Invention Grant
- Patent Title: Brake system for a compressor
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Application No.: US16591275Application Date: 2019-10-02
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Publication No.: US11531307B2Publication Date: 2022-12-20
- Inventor: Paul William Snell , Matthew Lee Heisey
- Applicant: Johnson Controls Technology Company
- Applicant Address: US MI Auburn Hills
- Assignee: Johnson Controls Technology Company
- Current Assignee: Johnson Controls Technology Company
- Current Assignee Address: US MI Auburn Hills
- Agency: Fletcher Yoder, P.C.
- Main IPC: F24F11/66
- IPC: F24F11/66 ; F24F11/67 ; G05B13/02 ; F25B1/053 ; F25B49/02

Abstract:
A heating, ventilation, and/or air conditioning (HVAC) system includes a compressor having an impeller configured to rotate and drive a working fluid through a working fluid circuit of the HVAC system in an active operating mode. The HVAC system further includes a controller configured to, in response to receiving an input indicative of a transition to operate in an inactive operating mode, suspend the active operating mode by interrupting a supply of power to the compressor, adjust pre-rotation vanes of the compressor, a variable geometry diffuser of the compressor to a first position, or both to enable a backflow of the working fluid through the compressor for a first interval of time, and, after the first interval of time has elapsed, adjust the pre-rotation vanes, the variable geometry diffuser, or both to a second position to block the backflow of the working fluid through the compressor.
Public/Granted literature
- US20210102720A1 BRAKE SYSTEM FOR A COMPRESSOR Public/Granted day:2021-04-08
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