Patents by Inventor Yuuko NAKANISHI

Yuuko NAKANISHI 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).

  • AIR CONDITIONER AND PREHEATING OPERATION METHOD
    Publication number: 20220128286
    Abstract: The present disclosure provides an air conditioner including a compressor and a drive circuit configured to drive the compressor. The drive circuit includes an AC path, a rectifier connected to the AC path, a DC path on an output side of the rectifier, a smoothing capacitor connected to the DC path, an inverter connected to the DC path, a switch disposed on an electric path from the AC path to the smoothing capacitor, and a controller configured to close and open the switch during a preheating operation of supplying electricity for preheating the compressor via the inverter.
    Type: Application
    Filed: November 14, 2019
    Publication date: April 28, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Keito KOTERA, Masahide FUJIWARA, Hironori OGAWA, Takamune OKUI, Yuuko NAKANISHI, Nobuyasu HIRAOKA