Patents by Inventor Hajime Kitauchi

Hajime Kitauchi 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).

  • Cooling and heating concurrent operation type of multiple refrigeration cycle
    Patent number: 5086624
    Abstract: A cooling and heating concurrent operation type of multiple refrigeration cycle comprises an indoor unit including a variable delivery type of compressor and an outdoor heat exchanger; indoor units including indoor heat exchangers, respectively; triple connection pipes of a high pressure gas pipe, a high pressure liquid pipe and a low pressure gas pipe, the triple connection pipes connecting between the outdoor unit and the indoor units; pressure detection means for detecting the intake pressure of the compressor and the discharge pressure of the compressor; and calculation and control means for comparing two detected values of the intake pressure and the discharge pressure of the compressor with two set values of a set intake pressure and a set discharge pressure, and for making variable controls of the compression capability of the compressor and the heat exchange capability of the outdoor heat exchanger based on the respective deviation values between the respective detected values and the respective set v
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: February 11, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Fumio Matsuoka, Jiro Okajima, Keiko Okuma, Ken Tomita, Yasuo Shibuya, Mutsumi Nakamura, Hajime Kitauchi
  • Decentralization type control apparatus for an air-conditioning or a refrigerating apparatus
    Patent number: 4674291
    Abstract: A decentralization type control apparatus for an air-conditioning or a refrigerating apparatus comprising a plurality of terminal control units and a central control unit for controlling the plurality of terminal control units.
    Type: Grant
    Filed: April 9, 1986
    Date of Patent: June 23, 1987
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hajime Kitauchi
  • Temperature control system for an air conditioner
    Patent number: 4467616
    Abstract: The disclosed temperature control system for an air conditioner includes a sensor for sensing an actual air temperature and a comparator for determining the temperature difference between the sensed actual air temperature and a set air temperature after their conversion to digital voltages. The temperature difference is stored in a memory and is also applied to a calculator where a rate of change in temperature per unit time is calculated from the temperature difference thus formed and from that temperature which had occurred just before a predetermined time stored in the memory. A control unit responds to both the temperature difference and the rate of change in temperature per unit time to increase or decrease the number of compressors put into operation with respect to the number of the compressors operated at the just preceeding interval of time.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: August 28, 1984
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hajime Kitauchi