Patents by Inventor Masashi Saitou

Masashi Saitou 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).

  • Patent number: 11149974
    Abstract: An air conditioner selection system is a system for selecting an air conditioner including an indoor unit. The air conditioner selection system is provided with a floor area acquisition section, an allowable refrigerant amount acquisition section, and an air conditioner selection section. The floor area acquisition section acquires a floor area of a room where the indoor unit is to be installed. The allowable refrigerant amount acquisition section acquires an allowable refrigerant amount of a refrigerant allowed to remain in the room at least based on the floor area acquired by the floor area acquisition section. The air conditioner selection section selects the air conditioner including the indoor unit installable in the room at least based on the allowable refrigerant amount acquired by the allowable refrigerant amount acquisition section.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: October 19, 2021
    Assignee: Daikin Industries, Ltd.
    Inventors: Yukio Kitade, Nobuyoshi Kawakami, Kousuke Shiohama, Masashi Saitou
  • Patent number: 10655884
    Abstract: An air conditioner includes a plurality of indoor units of a refrigerant circuit to perform air conditioning of a space, and an air conditioning controller that controls operations of the plurality of indoor units by allocating the indoor units individually to a plurality of predetermined areas of the space. The controller performs an area registration process of allocating the indoor units individually to a plurality of area identification frames corresponding to the areas, and allocating a plurality of ventilators individually to the area identification frames where the indoor units are allocated. The ventilators perform ventilation of the space. The controller does not allow the operations of the plurality of the indoor units when there is an area identification frame to which none of the ventilators is allocated, in the plurality of area identification frames where the indoor units are allocated.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: May 19, 2020
    Assignee: Daikin Industries, Ltd.
    Inventors: Tsutomu Iura, Yasuyuki Aisaka, Taiki Sunahata, Masashi Saitou
  • Publication number: 20200033019
    Abstract: An air conditioner management system according to the present invention enables timely maintenance on an air conditioner installed in a region requiring predetermined maintenance. An air conditioner management system (100) includes a maintenance region information database (23a), an installation region information acquisition unit (12a), and a maintenance necessity determination unit (22c). The maintenance region information database (23a) stores maintenance region information about a region requiring predetermined maintenance on an air conditioner (50). The installation region information acquisition unit (12a) acquires air conditioner installation region information about a region where the air conditioner (50) is installed.
    Type: Application
    Filed: March 20, 2018
    Publication date: January 30, 2020
    Inventors: Yukio KITADE, Nobuyoshi KAWAKAMI, Arina KASAGAWA, Masashi SAITOU
  • Publication number: 20200018502
    Abstract: An air conditioner selection system according to the present invention is capable of efficiently selecting an air conditioner that satisfies a safety standard requirement in a case where a refrigerant leaks. An air conditioner selection system (100) is a system for selecting an air conditioner (50) including an indoor unit (52). The air conditioner selection system (100) is provided with a floor area acquisition section (12a), an allowable refrigerant amount acquisition section (12b), and an air conditioner selection section (12c). The floor area acquisition section (12a) acquires a floor area of a room (3) where the indoor unit (52) is to be installed. The allowable refrigerant amount acquisition section (12b) acquires an allowable refrigerant amount of a refrigerant allowed to remain in the room (3) at least based on the floor area acquired by the floor area acquisition section (12a).
    Type: Application
    Filed: March 20, 2018
    Publication date: January 16, 2020
    Inventors: Yukio KITADE, Nobuyoshi KAWAKAMI, Kousuke SHIOHAMA, Masashi SAITOU
  • Publication number: 20190383522
    Abstract: An indoor unit, being configured to constitute a refrigeration apparatus including a refrigerant circuit, includes: a heat exchanger; and a plurality of refrigerant pipes. R32 refrigerant is enclosed in the refrigerant circuit. At least one of the plurality of refrigerant pipes that circulates the R32 refrigerant has an outer diameter of (Do-1)/8 inches while another of the plurality of refrigerant pipes that circulates R410A refrigerant has an outer diameter of Do/8.
    Type: Application
    Filed: December 22, 2017
    Publication date: December 19, 2019
    Applicant: Daikin Industries, Ltd.
    Inventors: Kousuke SHIOHAMA, Yoshiteru NOUCHI, Tarou YASUMATSU, Masashi SAITOU
  • Publication number: 20180135878
    Abstract: An air conditioner includes a plurality of indoor units of a refrigerant circuit to perform air conditioning of a space, and an air conditioning controller that controls operations of the plurality of indoor units by allocating the indoor units individually to a plurality of predetermined areas of the space. The controller performs an area registration process of allocating the indoor units individually to a plurality of area identification frames corresponding to the areas, and allocating a plurality of ventilators individually to the area identification frames where the indoor units are allocated. The ventilators perform ventilation of the space. The controller does not allow the operations of the plurality of the indoor units when there is an area identification frame to which none of the ventilators is allocated, in the plurality of area identification frames where the indoor units are allocated.
    Type: Application
    Filed: April 18, 2016
    Publication date: May 17, 2018
    Inventors: Tsutomu IURA, Yasuyuki AISAKA, Taiki SUNAHATA, Masashi SAITOU
  • Patent number: 9752815
    Abstract: A heat source-side heat exchanger fan blowing air to a heat source-side heat exchanger performing heat exchange with refrigerant compressed in a compressor is controlled. A current detected temperature at a current time is converted to obtain a current converted high pressure value at the current time. The current converted high pressure is a pressure of refrigerant inside a high pressure-side pipe of the compressor. The current detected temperature is a temperature detected by a temperature detector attached to the heat source-side heat exchanger. A past detected temperature is converted to obtain a past converted high pressure value at the past time. A speed of the heat source-side heat exchanger fan is determined using a corrected converted high pressure value. The corrected converted high pressure value is obtained by correcting the current converted high pressure value based on the past converted high pressure value.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: September 5, 2017
    Assignee: Daikin Industries, Ltd.
    Inventors: Masashi Saitou, Junichi Shimoda, Tatsuya Makino
  • Publication number: 20130061619
    Abstract: A heat source-side heat exchanger fan blowing air to a heat source-side heat exchanger performing heat exchange with refrigerant compressed in a compressor is controlled. A current detected temperature at a current time is converted to obtain a current converted high pressure value at the current time. The current converted high pressure is a pressure of refrigerant inside a high pressure-side pipe of the compressor. The current detected temperature is a temperature detected by a temperature detector attached to the heat source-side heat exchanger. A past detected temperature is converted to obtain a past converted high pressure value at the past time. A speed of the heat source-side heat exchanger fan is determined using a corrected converted high pressure value. The corrected converted high pressure value is obtained by correcting the current converted high pressure value based on the past converted high pressure value.
    Type: Application
    Filed: May 19, 2011
    Publication date: March 14, 2013
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masashi Saitou, Junichi Shimoda, Tatsuya Makino