Patents by Inventor Hiroaki Watanuki

Hiroaki Watanuki 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
    Patent number: 7987680
    Abstract: Between two heat exchangers of a first heat exchanger unit 41 and a second heat exchanger unit 42 included in an indoor heat exchanger 40, an opening 80 is arranged for introducing indoor air sucked from an air inlet 321 into an indoor blower 50 without being heat-exchanged. At the opening 80, a damper 91 is arranged for adjusting the opening rate of the opening 80, which is driven by a predetermined driving member 92. During a cooling cycle running of a freezing cycle, the opening rate of the opening 80 and/or the devices included in the freezing cycle such as a compressor, blower and expansion valve are controlled alone or in combination so that the temperature of the indoor heat exchanger 40 is lower than a dew point temperature of the indoor air.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: August 2, 2011
    Assignee: Fujitsu General Limited
    Inventors: Mamoru Hamada, Hiroki Igarashi, Atsushi Itagaki, Takafumi Arima, Hiroaki Watanuki, Yoshihiro Sasaki, Masamitsu Usui
  • Air conditioner
    Publication number: 20070079619
    Abstract: Between two heat exchangers of a first heat exchanger unit 41 and a second heat exchanger unit 42 included in an indoor heat exchanger 40, an opening 80 is arranged for introducing indoor air sucked from an air inlet 321 into an indoor blower 50 without being heat-exchanged. At the opening 80, a damper 91 is arranged for adjusting the opening rate of the opening 80, which is driven by a predetermined driving member 92. During a cooling cycle running of a freezing cycle, the opening rate of the opening 80 and/or the devices included in the freezing cycle such as a compressor, blower and expansion valve are controlled alone or in combination so that the temperature of the indoor heat exchanger 40 is lower than a dew point temperature of the indoor air.
    Type: Application
    Filed: October 11, 2006
    Publication date: April 12, 2007
    Applicant: FUJITSU GENERAL LIMITED
    Inventors: Mamoru Hamada, Hiroki Igarashi, Atsushi Itagaki, Takafumi Arima, Hiroaki Watanuki, Yoshihiro Sasaki, Masamitsu Usui