Patents by Inventor Masaki Toyoshima

Masaki Toyoshima 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: 11300302
    Abstract: An air-conditioning system includes a heat source unit, an air conditioner connected via piping to the heat source unit and configured to perform heat exchange between water supplied by the heat source unit and indoor air, a water circulation device for circulating the water between the heat source unit and the air conditioner, and an air-conditioning control device. The air-conditioning control device controls the heat source unit to lower temperature of the water flowing into the air conditioner, in accordance with an increase in an indoor humidity, and controls the water circulation device to lower temperature of the water flowing from the air conditioner back to the heat source unit, in accordance with an increase in an indoor temperature.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: April 12, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mamoru Hamada, Masaki Toyoshima
  • Patent number: 11131476
    Abstract: In an air conditioning system, a cooling tower cools cooling water. A chiller generates cold water using the cooling water cooled by the cooling tower. A cooling water circulation passage circulates cooling water between the cooling tower and chiller. A first heat exchanger exchanges heat between air and the cold water generated by the chiller. A cold water circulation passage circulates the cold water between the chiller and first heat exchanger. A second heat exchanger exchanges heat between a portion of the cooling water cooled by the cooling tower and air heat-exchanged with the cold water. A cooling water branch passage, branching from the cooling water circulation passage, introduces to the second heat exchanger the portion of the cooling water introduced to the chiller from the cooling tower, and introduces to the cooling water circulation passage the portion of the cooling water heat-exchanged with air by the second heat exchanger.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: September 28, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mamoru Hamada, Hayato Horie, Masaki Toyoshima
  • Patent number: 10935269
    Abstract: A ventilator includes an exhaust air duct for exhausting air from an interior space to an outside and a supply air duct for supplying air from the outside to the interior space, and is equipped with a heat exchanger and a defroster. The heat exchanger performs heat exchange between air passing through the exhaust air duct and air passing through the supply air duct. The defroster defrosts, when frost attaches to the heat exchanger, the heat exchanger by, after air flows into the exhaust air duct or the supply air duct, changing a state of the air.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: March 2, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mamoru Hamada, Hayato Horie, Masaki Toyoshima
  • Patent number: 10886434
    Abstract: A white LED lamp including: a conductive portion; a light emitting diode chip mounted on the conductive portion, for emitting a primary light having a peak wavelength of 360 nm to 420 nm; a transparent resin layer including a first hardened transparent resin, for sealing the light emitting diode chip; and a phosphor layer covering the transparent resin layer, the phosphor layer being formed by dispersing a phosphor powder into a second hardened transparent resin, and the phosphor powder receiving the primary light and radiating a secondary light having a wavelength longer than that of the primary light. An energy of the primary light contained in the radiated secondary light is 0.4 mW/lm or less.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: January 5, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Tsutomu Ishii, Hajime Takeuchi, Yasumasa Ooya, Katsutoshi Nakagawa, Yumi Kanno, Masaki Toyoshima, Yasuhiro Shirakawa, Ryo Sakai
  • Patent number: 10788225
    Abstract: An air conditioning system includes: an air conditioning device, a ventilator, a sensor group, an operation terminal, and a control device installed in a building. The control device performs controlling and monitoring of operation of the air conditioning device and the ventilator. The control device controls the ventilator so as to operate during the maintenance operation of the air conditioning device.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: September 29, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Emi Takeda, Masaki Toyoshima, Takuya Furuhashi, Sota Komae, Fumihiko Sone, Reiji Morioka
  • Patent number: 10684051
    Abstract: A refrigeration cycle apparatus includes a refrigerant circuit that includes a condenser, multiple temperature sensors that are disposed in line in a direction in which refrigerant flows in the condenser and detect refrigerant temperature of the condenser, a memory unit that stores positional information of the multiple temperature sensors, and a refrigerant amount calculation unit that calculates a refrigerant amount of the condenser based on the positional information of the multiple temperature sensors, detected temperatures of the multiple temperature sensors and a saturated liquid temperature of the refrigerant.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: June 16, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masaki Toyoshima
  • Patent number: 10598417
    Abstract: A refrigeration cycle apparatus is provided with a compressor, a condenser, a pressure-reducing device, and an evaporator. The refrigeration cycle apparatus comprises a refrigeration cycle configured to circulate refrigerant; and a control unit configured to control the refrigeration cycle. The control unit causes the refrigeration cycle to operate when an operation condition is satisfied, the operation condition including elapse of a preset time after the control unit stops the refrigeration cycle. The control unit detects abnormality of the refrigeration cycle based on state data indicating a state of the refrigeration cycle after the control unit causes the refrigeration cycle to operate.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: March 24, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasutaka Ochiai, Masaki Toyoshima, Makoto Saito
  • Publication number: 20200018513
    Abstract: In an air conditioning system, a thermal source device generates cold water from cooling water cooled by a cooling tower. A cooling water circulation passage allows circulation of the cooling water between the cooling tower and the thermal source device. A first heat exchanger exchanges heat between air and the cold water. A cold water circulation passage allows circulation of the cold water between the thermal source device and the first heat exchanger. A second heat exchanger exchanges heat between the cooling water cooled by the cooling tower and the air heat-exchanged with the cold water by the first heat exchanger. A cooling water branch passage, introduces to the second heat exchanger the cooling water introduced to the thermal source device from the cooling tower, and introduces to the cooling water circulation passage the cooling water heat-exchanged with the air by the second heat exchanger.
    Type: Application
    Filed: October 21, 2016
    Publication date: January 16, 2020
    Inventors: Mamoru HAMADA, Hayato HORIE, Masaki TOYOSHIMA
  • Patent number: 10495330
    Abstract: An air conditioning system includes a compressor to compress refrigerant; a first heat exchanger to condense the compressed refrigerant into a supercooled liquid state; a first decompressor to decompress the condensed refrigerant; a second heat exchanger to cause the decompressed refrigerant to absorb heat; a second decompressor to decompress the heated refrigerant; a third heat exchanger to evaporate the decompressed refrigerant; and a blower fan to take in air from outside a room and blow the air to the first heat exchanger. The second heat exchanger is disposed downstream of the first heat exchanger in a blowing direction of the blower fan. A humidifier is disposed between the first heat exchanger and the second heat exchanger in the blowing direction. The air blown from the blower fan is heated by the first heat exchanger, humidified by the humidifier, cooled by the second heat exchanger, and supplied into the room.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: December 3, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hayato Horie, Mamoru Hamada, Masaki Toyoshima
  • Patent number: 10443882
    Abstract: An outside-air processing device includes a main body having a return-air introducing port for introducing return air from a room and a supply-air outlet port for blowing out supply air into the room, a total heat exchanger arranged in the main body and configured to exchange heat between outdoor air and the return air, and to blow out the heat-exchanged outdoor air from the supply-air outlet port as the supply air, and an opening-closing unit configured to open and close a bypass path formed in the main body to bypass between the return-air introducing port and the supply-air outlet port.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: October 15, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hayato Horie, Mamoru Hamada, Masaki Toyoshima
  • Publication number: 20190242597
    Abstract: An air-conditioning system includes a heat source unit, an air conditioner connected via piping to the heat source unit and configured to perform heat exchange between water supplied by the heat source unit and indoor air, a water circulation device for circulating the water between the heat source unit and the air conditioner, and an air-conditioning control device. The air-conditioning control device controls the heat source unit to lower temperature of the water flowing into the air conditioner, in accordance with an increase in an indoor humidity, and controls the water circulation device to lower temperature of the water flowing from the air conditioner back to the heat source unit, in accordance with an increase in an indoor temperature.
    Type: Application
    Filed: October 24, 2016
    Publication date: August 8, 2019
    Inventors: Mamoru HAMADA, Masaki TOYOSHIMA
  • Patent number: 10345000
    Abstract: An air-conditioning apparatus includes an outside-air processing device including a total heat exchanger exchanging heat between outdoor air and return air, and blowing out the outdoor air from a supply-air outlet port into a room as supply air, an indoor unit including an indoor heat exchanger exchanging heat between the return air and refrigerant, and blowing out the return air from an indoor outlet port as indoor outlet air, a joining unit connecting the supply-air outlet port and the indoor outlet port to join the supply air and the indoor outlet air, an opening-closing unit arranged in the joining unit and opening and closing the joining unit, a supply-air temperature detecting unit detecting a supply-air temperature of the supply air, an indoor outlet temperature detecting unit detecting an indoor outlet temperature of the indoor outlet air, and a control unit controlling an operation of the opening-closing unit based on the supply-air temperature and the indoor outlet temperature.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: July 9, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hayato Horie, Mamoru Hamada, Masaki Toyoshima
  • Patent number: 10330365
    Abstract: A refrigerant circuit forming a refrigeration cycle by connecting together a compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger via a refrigerant pipe; and a control unit controlling a blown-out air temperature by causing the indoor heat exchanger to exchange heat while controlling the refrigeration cycle based on one of a sensible heat capability and a latent heat capability calculated from a cooling capability of the refrigerant circuit and a cooling load of the refrigerant circuit. The control unit includes: a capability judging unit judging the cooling capability of the refrigerant circuit based on the one of the sensible heat capability and the latent heat capability; and a control selecting unit selecting one from between superheat degree control to control a degree of superheat and evaporating temperature control to control an evaporating temperature, based on a determination result obtained by the capability judging unit.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: June 25, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hayato Horie, Mamoru Hamada, Masaki Toyoshima, Hidemoto Arai, Masami Yasuda
  • Patent number: 10317120
    Abstract: An air conditioning system according to the present invention changes a target supply temperature based on a magnitude relationship between an operating frequency of a first compressor and a first frequency at which an operating efficiency of the first compressor reaches a maximum, and a magnitude relationship between an operating frequency of a second compressor and a second frequency at which an operating efficiency of the second compressor reaches a maximum.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: June 11, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mamoru Hamada, Masaki Toyoshima, Hayato Horie
  • Patent number: 10274357
    Abstract: Provided is a refrigeration cycle apparatus including: a refrigerant circuit formed by connecting, by a refrigerant pipe, a compressor, a condenser, an expansion device, an evaporator and a liquid reservoir; a liquid level detection sensor including a plurality of heat generating units and a plurality of temperature detection units, the heat generating units being paired with the temperature detection units, and provided in the liquid reservoir, the liquid level detection sensor being configured to detect a liquid level of a refrigerant accumulated in the liquid reservoir, based on a temperature of each of the heat generating units, in which the liquid reservoir includes a container for accumulating the refrigerant, an inlet pipe connected to the refrigerant circuit and configured to allow a portion of the refrigerant flowing out of the container to flow into the container, and in which in the container, a shielding portion is provided between an discharge outlet for the refrigerant of the inlet pipe and the
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: April 30, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasutaka Ochiai, Makoto Saito, Masaki Toyoshima
  • Publication number: 20190056134
    Abstract: A ventilator includes an exhaust air duct for exhausting air from an interior space to an outside and a supply air duct for supplying air from the outside to the interior space, and is equipped with a heat exchanger and a defroster. The heat exchanger performs heat exchange between air passing through the exhaust air duct and air passing through the supply air duct. The defroster defrosts, when frost attaches to the heat exchanger, the heat exchanger by, after air flows into the exhaust air duct or the supply air duct, changing a state of the air.
    Type: Application
    Filed: January 8, 2016
    Publication date: February 21, 2019
    Inventors: Mamoru HAMADA, Hayato HORIE, Masaki TOYOSHIMA
  • Patent number: 10208976
    Abstract: An air-conditioning ventilation system of the present invention includes one or a plurality of air circulation devices configured to circulate air among a plurality of rooms, one or a plurality of air-conditioning apparatuses provided in at least one of the plurality of rooms, a human detector provided in each of the plurality of rooms and configured to detect a human present in a corresponding one of the rooms in which the human detector is provided, an optimal air-conditioning ventilation operation estimating unit configured to estimate presence or absence of any human in each of the plurality of rooms, or a human presence ratio representing a number of humans present per unit time in each of the plurality of rooms, on a basis of a past result of detection by the human detector, and a controller configured to control the air circulation device and the air-conditioning apparatus on a basis of a result of estimation by the optimal air-conditioning ventilation operation estimating unit.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: February 19, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaki Toyoshima, Emi Takeda, Shinichi Ito, Toshiaki Yoshikawa, Haruyuki Hirasawa, Atsushi Shinno, Hiroki Aoki
  • Publication number: 20190011137
    Abstract: An air conditioning system includes a compressor to compress refrigerant; a first heat exchanger to condense the compressed refrigerant into a supercooled liquid state; a first decompressor to decompress the condensed refrigerant; a second heat exchanger to cause the decompressed refrigerant to absorb heat; a second decompressor to decompress the heated refrigerant; a third heat exchanger to evaporate the decompressed refrigerant; and a blower fan to take in air from outside a room and blow the air to the first heat exchanger. The second heat exchanger is disposed downstream of the first heat exchanger in a blowing direction of the blower fan. A humidifier is disposed between the first heat exchanger and the second heat exchanger in the blowing direction. The air blown from the blower fan is heated by the first heat exchanger, humidified by the humidifier, cooled by the second heat exchanger, and supplied into the room.
    Type: Application
    Filed: August 20, 2015
    Publication date: January 10, 2019
    Inventors: Hayato HORIE, Mamoru HAMADA, Masaki TOYOSHIMA
  • Patent number: 10161661
    Abstract: A refrigeration cycle apparatus includes a refrigeration cycle in which refrigerant circulates, the refrigeration cycle including a compressor, an outdoor heat exchanger, expansion valves, and indoor heat exchangers, which are connected to each other via a refrigerant pipe, a heat source unit accommodating the outdoor heat exchanger, use-side units accommodating the indoor heat exchangers, and a control unit that controls at least turning on and off of the refrigeration cycle. The control unit detects abnormality of the refrigeration cycle based on the pressure or temperature of the refrigeration cycle in an off time of the refrigeration cycle.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: December 25, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasutaka Ochiai, Masaki Toyoshima, Takashi Okazaki
  • Patent number: 10132939
    Abstract: To suppress a decrease in optical output of a scintillator. A scintillator includes a sintered body of 1 mm3 or less that contains a rare earth oxysulfide. In a composition image obtained by observing a cross-section of the sintered body under a scanning electron microscope, the sum of the number of oxide regions that contain at least one of a rare earth oxide different from the rare earth oxysulfide and an impurity metal oxide and the number of sulfide regions that contain at least one of a rare earth sulfide different from the rare earth oxysulfide and an impurity metal sulfide, which exist in a unit area of 500 ?m×500 ?m, is zero or more and five or less. Each of the oxide regions and the sulfide regions has a major axis of zero or more and 100 ?m or less.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: November 20, 2018
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Yoshitaka Adachi, Akihisa Saito, Masaki Toyoshima, Eiji Oyaizu, Kazumitsu Morimoto, Takashi Rokutanda