Patents by Inventor Megumi Komazaki

Megumi Komazaki 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 control apparatus based on coolant type detection
    Patent number: 5709094
    Abstract: An air conditioner control apparatus measures coolant temperatures and pressures at both inlet side and outlet side of a compressor, or detects a electric capacity of the coolant and the like in order to determine the kind of coolant. For example, when a CPU 31 detects that the coolant R22 is used, the apparatus selects a data item of a fluorocarbone-based coolant R22 stored in a data selection means 35 storing pressure-temperature data items, and calculates a super-heated rate or a super-cooled rate according to the ability of a compressor 1 so that the room temperature reaches the predetermined one set by the operator and setting a calculation result. Next, a vapor temperature is calculated by each indoor air conditioner side, and during a cooling operation, electronic expansion valves 9, 11 are controlled so that target super-heated temperature are reached to the temperatures in temperature sensors 17 and 19.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: January 20, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasunori Ooyabu, Hideaki Motohashi, Megumi Komazaki, Kokichi Furuhama
  • Air conditioner
    Patent number: 5626031
    Abstract: In an air conditioner having at least an indoor unit 9 and an outdoor unit 11 through which a coolant flows, a saturation temperature of the coolant at 50.degree. C. is not less than 2500 kPa, and the indoor heat exchanger in the indoor unit satisfies a relationship of Hi.times.Li/(Di.sup.3 .times.Ni.sup.2).gtoreq.150 and the outdoor heat exchanger in the outdoor unit satisfies a relationship of Ho.times.Lo/(Do.sup.3 .times.No.sup.2).gtoreq. 60.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: May 6, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hideaki Motohashi, Kokichi Furuhama, Megumi Komazaki, Tetsuo Sano
  • Air conditioning apparatus capable of performing a dehumidifying operation
    Patent number: 5345776
    Abstract: An air conditioner having a compressor, an outdoor fan, and two indoor heat exchangers which are connected by an electric expansion valve. During a dehumidifying operation, the opening of the electric expansion valve is decreased, thereby decompressing the refrigerant flowing from the first indoor heat exchange into the second indoor exchanger. The first and second heat exchangers thereby function as a reheater and an evaporator, respectively. The second indoor heat exchanger cools and dehumidifies the indoor air, and the first indoor heat exchanger heats the indoor air again. The indoor air, first cooled, then dehumidified, and finally re-heated, is supplied into the room. During the dehumidifying operation, a deviation (T) of the indoor temperature (Ta) from a preset indoor temperature (Ts), and a change (.DELTA.T) in the deviation (T) are detected, and the deviation (H) of the indoor humidity (Ha) from a preset indoor humidity (Hs), and a change (.DELTA.H) are also detected.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: September 13, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Megumi Komazaki, Hideaki Suzuki, Hideaki Motohashi, Keiichi Morita