Patents by Inventor Kazuya Kanazaki

Kazuya Kanazaki 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).

  • Screw compressor system and operating method thereof
    Patent number: 6599094
    Abstract: A screw compressor system comprises a plurality of screw compressors the capacity of each of which is controlled by repeating load operation and no-load operation. Using a timer output corresponding to compressed gas consumption in a demander including gas consumption equipments, a parent controller determines the number of compressors to be operated among the plurality of compressors. Among the compressors determined to be operated, all compressors other than one are put in load operation. In accordance with a load factor of the excepted one screw compressor, the parent controller controls discharge pressure of each compressor. At this time, the control is made so that discharge pressure of the screw compressor system measured by a pressure gauge be lower than that upon the maximum gas consumption.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: July 29, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Kazuya Kanazaki, Shinichi Hirose, Junji Okita, Seiji Tsuru
  • Screw compressor system and operating method thereof
    Publication number: 20020071769
    Abstract: A screw compressor system comprises a plurality of screw compressors the capacity of each of which is controlled by repeating load operation and no-load operation. Using a timer output corresponding to compressed gas consumption in a demander including gas consumption equipments, a parent controller determines the number of compressors to be operated among the plurality of compressors. Among the compressors determined to be operated, all compressors other than one are put in load operation. In accordance with a load factor of the excepted one screw compressor, the parent controller controls discharge pressure of each compressor. At this time, the control is made so that discharge pressure of the screw compressor system measured by a pressure gauge be lower than that upon the maximum gas consumption.
    Type: Application
    Filed: February 22, 2001
    Publication date: June 13, 2002
    Inventors: Kazuya Kanazaki, Shinichi Hirose, Junji Okita, Seiji Tsuru