Patents by Inventor Morikuni Natsume

Morikuni Natsume 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).

  • Refrigerant cycle and method of controlling the same
    Patent number: 8266920
    Abstract: An object of the present invention is to reduce electrical noise in accordance with the necessity of a countermeasure taken against electrical noise without changing a structure of an expansion valve. In a case where a judgment result as to whether or not the countermeasure against electrical noise is taken is affirmative, a drive timing (interval) of an expansion valve (107) is increased. Further, a driving amount is reduced. Accordingly, a flow of a refrigerant is made slow, whereby it is possible to reduce generated electrical noise while performing instructed temperature control.
    Type: Grant
    Filed: February 19, 2008
    Date of Patent: September 18, 2012
    Assignee: Daikin Industries, Ltd.
    Inventors: Morikuni Natsume, Hiroshi Doumae, Satoshi Yagi, Yasuaki Miyaba, Hisashi Sumida
  • Load driving device, outdoor unit of air conditioner, and driving method of load
    Patent number: 8109103
    Abstract: After the power source to the control substrate is turned on, power is supplied to the compressor driver and the fan driver. Then, when it is determined that an indoor unit is in operation, the compressor driver and the fan driver are operated. Meanwhile, when it is determined that the indoor unit is not in operation, after the lapse of ten minutes or twenty minutes under a predetermined setting, the power to the compressor driver and the fan driver is cut. When the operation of the indoor unit is started again, power is supplied to the compressor driver and the fan driver.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: February 7, 2012
    Assignee: Daikin Industries, Ltd.
    Inventors: Morikuni Natsume, Satoshi Yagi, Takuya Kotani, Yasuaki Miyaba, Hirotaka Saruwatari, Hiroyuki Matsuura, Mario Hayashi
  • REFRIGERANT CYCLE AND METHOD OF CONTROLLING THE SAME
    Publication number: 20100036532
    Abstract: An object of the present invention is to reduce electrical noise in accordance with the necessity of a countermeasure taken against electrical noise without changing a structure of an expansion valve. In a case where a judgment result as to whether or not the countermeasure against electrical noise is taken is affirmative, a drive timing (interval) of an expansion valve (107) is increased. Further, a driving amount is reduced. Accordingly, a flow of a refrigerant is made slow, whereby it is possible to reduce generated electrical noise while performing instructed temperature control.
    Type: Application
    Filed: February 19, 2008
    Publication date: February 11, 2010
    Inventors: Morikuni Natsume, Hiroshi Doumae, Satoshi Yagi, Yasuaki Miyaba, Hisashi Sumida
  • Load Driving Device, Outdoor Unit of Air Conditioner, and Driving Method of Load
    Publication number: 20090007579
    Abstract: After the power source to the control substrate is turned on, power is supplied to the compressor driver and the fan driver. Then, when it is determined that an indoor unit is in operation, the compressor driver and the fan driver are operated. Meanwhile, when it is determined that the indoor unit is not in operation, after the lapse of ten minutes or twenty minutes under a predetermined setting, the power to the compressor driver and the fan driver is cut. When the operation of the indoor unit is started again, power is supplied to the compressor driver and the fan driver.
    Type: Application
    Filed: March 2, 2007
    Publication date: January 8, 2009
    Inventors: Morikuni Natsume, Satoshi Yagi, Takuya Kotani, Yasuaki Miyaba, Hirotaka Saruwatari, Hiroyuki Matsuura, Mario Hayashi