Patents by Inventor Lucy Y. Liu

Lucy Y. Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Multi-Compressor Refrigeration System and Method for Operating It
    Publication number: 20130145781
    Abstract: A refrigeration system (20) has a first compressor (24) and a second compressor (26). The second compressor has at least a first condition t least partially in parallel with the first compressor along a refrigerant flowpath. A heat rejection heat exchanger (50) is downstream of the first and second compressors along the refrigerant flowpath. An expansion device (54) is downstream of the heat rejection heat exchanger along the refrigerant flowpath. A heat absorption heat exchanger (56) is downstream of the expansion device along the refrigerant flowpath. The first compressor is a variable speed compressor coupled to a variable speed drive (32). The second compressor is a fixed speed compressor.
    Type: Application
    Filed: April 27, 2012
    Publication date: June 13, 2013
    Applicant: CARRIER CORPORATION
    Inventor: Lucy Y. Liu