Patents by Inventor Masao Igata

Masao Igata 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).

  • Operation controller for compressor and air conditioner having the same
    Patent number: 9074787
    Abstract: The present invention provides a configuration in which a compressor can be controlled using an inverter in an air conditioner where only a signal related to ON/OFF of the compressor is output from a control terminal. An operation controller for a compressor is configured so that the compressor can be controlled using an inverter based on an ON signal output from a control interface of an air conditioner. Specifically, a target value of at least one of an outlet air temperature, an evaporation temperature and a condensation temperature, and a suction pressure and a discharge pressure of the compressor is corrected according to a duration of the ON signal or a duration of the OFF state thereof, thereby controlling the frequency of the compressor.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: July 7, 2015
    Assignee: Daikin Industries, Ltd.
    Inventors: Masamitsu Kitagishi, Ryouta Takechi, Masao Igata
  • OPERATION CONTROLLER FOR COMPRESSOR AND AIR CONDITIONER HAVING THE SAME
    Publication number: 20100218527
    Abstract: The present invention provides a configuration in which a compressor can be controlled using an inverter in an air conditioner where only a signal related to ON/OFF of the compressor is output from a control terminal. An operation controller for a compressor is configured so that the compressor can be controlled using an inverter based on an ON signal output from a control interface of an air conditioner. Specifically, a target value of at least one of an outlet air temperature, an evaporation temperature and a condensation temperature, and a suction pressure and a discharge pressure of the compressor is corrected according to a duration of the ON signal or a duration of the OFF state thereof, thereby controlling the frequency of the compressor.
    Type: Application
    Filed: September 29, 2008
    Publication date: September 2, 2010
    Inventors: Masamitsu Kitagishi, Ryouta Takechi, Masao Igata