Patents Assigned to Daikin Industries, Ltd.
  • Publication number: 20240167735
    Abstract: A heat source unit includes a first switching valve configured to switch between a first state where the first switching valve brings a high and low pressure gas connection pipe and a discharge side of a compressor into communication with each other and a second state where the first switching valve brings the high and low pressure gas connection pipe and a suction side of the compressor into communication with each other; and a second switching valve configured to switch between a third state where while the second switching valve brings the discharge side of the compressor and a gas end of a first heat exchange section into communication with each other, the second switching valve brings the suction side of the compressor and a gas end of the second heat exchange section into communication with each other and a fourth state where while the second switching valve brings the discharge side of the compressor and the gas end of the second heat exchange section into communication with each other, the second swit
    Type: Application
    Filed: January 31, 2024
    Publication date: May 23, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takaya NAKANISHI, Yuta FUKUYAMA
  • Publication number: 20240167760
    Abstract: Placement of items to be stored is proposed according to how the items to be stored in a chamber performing freezing or refrigerating are cooled. An information processing device including: a prediction section that predicts how items to be stored in a chamber performing freezing or refrigerating are cooled; and an output section that outputs proposal information on the placement of the items to be stored in the chamber performing freezing or refrigerating based on how the items to be stored in the chamber are cooled as predicted by the prediction section.
    Type: Application
    Filed: February 25, 2022
    Publication date: May 23, 2024
    Applicants: DAIKIN INDUSTRIES, LTD., The University of Tokyo
    Inventors: Daisuke SATO, Yasuki KANSHA
  • Publication number: 20240166777
    Abstract: A method for producing a high purity fluoropolymer-containing composition, the method including the steps of performing a fluorine radical treatment on a composition containing a fluoropolymer and a polymer (I) containing a polymerization unit (I) derived from a monomer (I) represented by the general formula (I) to obtain a high purity fluoropolymer-containing composition: CX1X3?CX2R(—CZ1Z2-A0)m??(I) wherein X1 and X3 are each independently F, Cl, H, or CF3; X2 is H, F, an alkyl group, or a fluorine-containing alkyl group; A0 is an anionic group; R is a linking group; Z1 and Z2 are each independently H, F, an alkyl group, or a fluorine-containing alkyl group; and m is an integer of 1 or more.
    Type: Application
    Filed: December 29, 2023
    Publication date: May 23, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro TAIRA, Kazuhiro MISHIMA, Chiaki OKUI, Hirotoshi YOSHIDA, Taketo KATO, Taku YAMANAKA
  • Publication number: 20240167226
    Abstract: An oil-resistant agent composition which contains (1) a hydrocarbon group-containing polymer and (2) an amphoteric polyacrylamide polymer, and which is capable of imparting paper with excellent oil resistance. The hydrocarbon group-containing polymer has (a) a repeating unit that is formed from an acrylic monomer which has a long-chain hydrocarbon group having 7 to 40 carbon atoms and (b) a repeating unit that is formed from an acrylic monomer which has a hydrophilic group. Preferably, the oil-resistant agent composition additionally contains an anionic polyacrylamide polymer. Also disclosed is an oil-resistant agent kit including a liquid containing the oi-resistant agent composition, a method for producing oil-resistant paper which includes adding the oil-resistant agent composition to a paper constituent material, pulp or pulp slurry, as well as an oil-resistant paper.
    Type: Application
    Filed: January 3, 2024
    Publication date: May 23, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Shun SHIBATA, Tetsuya Uehara, Daisuke Noguchi, Hisako Nakamura
  • Patent number: 11988426
    Abstract: Efficiency in refrigerant charging work is addressed when a recovered refrigerant recovered from a first heat source unit is to be charged to a second heat source unit. A refrigerant charging method is a charging method used when a first heat source unit of an already installed refrigeration cycle apparatus in which a refrigeration cycle is to be performed by a refrigerant that circulates is to be replaced with a second heat source unit. The refrigerant charging method includes recovering a first refrigerant from an already installed refrigeration cycle apparatus and obtaining a recovered refrigerant and charging the recovered refrigerant and charging a second refrigerant whose composition differs from the composition of the recovered refrigerant to the refrigeration cycle apparatus after renewal that includes the second heat source unit.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: May 21, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Takuro Yamada, Atsushi Yoshimi, Eiji Kumakura, Ikuhiro Iwata, Shun Ohkubo
  • Patent number: 11990950
    Abstract: An air-conditioning apparatus includes a first transmission channel, a plurality of second transmission channels different from the first transmission channel, a controller connected to the first transmission channel and not connected to the second transmission channels, a plurality of air-conditioning indoor units connected to the second transmission channels and not connected to the first transmission channel, and a plurality of air-conditioning outdoor units. The plurality of air-conditioning outdoor units electrically connect the first transmission channel and the second transmission channels, and do not transmit a short-circuit state occurring in one of the first transmission channel and the second transmission channels to a transmission channel other than the one of the first transmission channel and the second transmission channels, thereby enabling communication between devices connected to the transmission channel other than the one.
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: May 21, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Kosuke Hotta, Shin Higashiyama
  • Publication number: 20240159422
    Abstract: By using a model that predicts an environment where elements are arranged in a desired manner, the air environment of the subject space can be easily estimated. An information processing device includes: a storage section storing element models that are created for respective elements which affect an air environment of a space, and that predict the effect of the elements on the air environment of the space; a placement acquisition section acquiring information on the placement of the respective elements provided in a predetermined subject space; and an estimation section estimating the air environment in the subject space using the information on the placement of each of the elements acquired by the placement acquisition section and the element models, which correspond to the elements, stored in the storage section.
    Type: Application
    Filed: March 24, 2022
    Publication date: May 16, 2024
    Applicants: DAIKIN INDUSTRIES, LTD., The University of Tokyo
    Inventors: Daisuke SATO, Yasuki KANSHA
  • Publication number: 20240162432
    Abstract: Provided is a composition for electrode formation comprising a copolymer comprising vinylidene fluoride unit and a unit of an other monomer other than vinylidene fluoride, and a solvent represented by a general formula (1): NR1R2R3 wherein R1, R2, and R3 are each independently H or a monovalent substituent, provided that the total number of carbon atoms of R1, R2, and R3 is 6 or more, and at least one of R1, R2, and R3 is an organic group having carbonyl group; and any two of R1, R2, and R3 optionally bond to each other to form a ring.
    Type: Application
    Filed: December 7, 2023
    Publication date: May 16, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yumi NISHIYAMA, Chihiro HOSODA, Shigeaki YAMAZAKI, Junpei TERADA
  • Publication number: 20240157008
    Abstract: In response to a person touching a portion indicated by reference sign 1A on a desk 91 installed in a room R, for example, a control device 60 identifies this touched area as an identified area 80 that has been contaminated by the person. In this case, the control device 60 controls a drive mechanism 30 to direct a light source 20 to this identified area 80. The area touched by the person in the room R is thus UV-irradiated and sterilized.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 16, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoki SAITO, Toshio TANAKA, Mamoru OKUMOTO
  • Publication number: 20240159417
    Abstract: [Problem] To allow a user to know a range of an adjustable environment in a predetermined space adjusted by an air conditioner and a spatial range adjustable to a predetermined environment.
    Type: Application
    Filed: February 4, 2022
    Publication date: May 16, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Daisuke SATO
  • Publication number: 20240159434
    Abstract: A heat exchanger, connected to a refrigerant pipe, includes: heat transfer tubes; and a header that connects the refrigerant pipe and the heat transfer tubes, and that forms a refrigerant flow path between the refrigerant pipe and the heat transfer tubes. The header includes a first member that includes a first plate-shaped portion, and a second member that includes a second plate-shaped portion that is stacked on a heat transfer tubes side of the first plate-shaped portion. The first plate-shaped portion has a first opening that forms the refrigerant flow path. The second plate-shaped portion has a second opening that forms the refrigerant flow path. When viewed in a stacking direction of the first plate-shaped portion and the second plate-shaped portion, the second opening and the first opening overlap each other at a first region and at a second region that is different from the first region.
    Type: Application
    Filed: January 22, 2024
    Publication date: May 16, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoki Hirokawa, Kouju Yamada
  • Patent number: 11980302
    Abstract: An air blower includes: a panel (3); a frame member (5) arranged to surround the panel (3) and having a blowout port (13a, 13b, 13c, 13d, 13e, 13f, 13g) of air formed therein; and a fan (11a, 11b, 11c, 11d, 11e, 11f, 30) that sends air to the blowout port (13a, 13b, 13c, 13d, 13e, 13f, 13g). The frame member (5) produces airflows that are blown out from at least three directions and collide with each other, thereby producing an air current going forward to the panel (3).
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: May 14, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Kei Takenaka, Yousuke Imai, Yuusuke Taruki, Keita Kawahara, Aya Okuno, Masahiko Chouji
  • Patent number: 11981883
    Abstract: A composition containing 1,2-dichloro-3,3,3-trifluoropropene (HCFO-1223xd) and a fluorine-based oil.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: May 14, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Daisuke Karube, Yuuko Tsutsui
  • Patent number: 11982478
    Abstract: An air conditioner includes a refrigerant circuit, sensors that measure an amount representing a state of refrigerant in the refrigerant circuit, and a controller. The controller executes normal operation according to air conditioning load and a first detection operation of detecting refrigerant leakage. The controller adjusts a degree of subcooling at an outlet of the condenser to a first value during normal operation. The controller detects a value related to discharge temperature of the compressor or a value related to degree of superheating at an outlet of the evaporator, based on a sensor measurement result. The controller adjusts degree of subcooling to a second value larger than the first value when executing the first detection operation, and determines that refrigerant is leaking when the value related to discharge temperature of the compressor or the value related to degree of superheating is equal to or larger than a threshold value.
    Type: Grant
    Filed: November 20, 2023
    Date of Patent: May 14, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Shu Miura, Keisuke Nishitani
  • Patent number: 11982454
    Abstract: A refrigerant leakage notifying device includes a refrigerant sensor, a determination unit, a notification unit, and an output unit. The refrigerant sensor detects a refrigerant and outputs a detection signal according to a detection result. The determination unit receives the detection signal outputted from the refrigerant sensor and determines leakage of the refrigerant in accordance with the detection signal received. The notification unit notifies leakage of the refrigerant with at least one of sound and light in a case in which the determination unit has determined that the refrigerant is leaking. The output unit is provided separately from the refrigerant sensor. The output unit outputs a test signal to the determination unit. The test signal is a signal that the determination unit has determined that the refrigerant is leaking in a case in which the determination unit receives the signal.
    Type: Grant
    Filed: January 7, 2022
    Date of Patent: May 14, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Shuuichi Suzuki, Shinya Matsuoka
  • Patent number: 11982048
    Abstract: A water repellent composition containing: (A) water repellent particles in which the number of surface alkyl groups on the water repellent particles is 600×1018-50,000×1018 per 1 g of water repellent particles; (B) a water-repellent resin which is a polymer having a long-chain C7-40 hydrocarbon group; and (C) a liquid medium. The water-repellent particles preferably have an average primary particle size of 1-100 nm. Also disclosed is a method for treating a fiber using the water repellent composition, a method for producing a treated textile product, a film formed from the water repellent composition, and a textile product treated with a treatment liquid containing the water-repellent composition.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: May 14, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Yoshito Tanaka, Rena Inamasu, Yuko Shiotani, Shouta Shibutani, Masahiro Higashi, Tomohiro Yoshida, Norimasa Uesugi
  • Patent number: 11982982
    Abstract: A management apparatus monitors and/or controls a facility device. The management apparatus includes a setting unit, a storage unit, a determination unit, and an extraction unit. The setting unit sets association information associating identification information in order to specify a register used by the facility device with a data point regarding monitoring and/or control of the facility device. The storage unit stores history information that is association information previously set by the setting unit. The determination unit determines the use state of the register in the facility device. The extraction unit extracts the history information identical or similar to the use state of the register determined by the determination unit from the history information.
    Type: Grant
    Filed: April 24, 2023
    Date of Patent: May 14, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Tsuyoshi Aramaki, Takayuki Nakahara
  • Patent number: 11984827
    Abstract: A motor control apparatus configured to convert an input power supplied from a power supply to an output alternating-current power having a predetermined voltage and a predetermined frequency is provided. The motor control apparatus includes an inverter circuit configured to supply the output alternating-current power to a motor, and is configured to perform a control to suppress an amplitude of a first harmonic component that occurs synchronously with a rotation rate of the motor in a power input into the motor to be lower than or equal to a predetermined value and to suppress an amplitude of a second harmonic component that occurs in an electromagnetic exciting force of the motor at a same frequency as the first harmonic component to be lower than the amplitude of the second harmonic component in a case of the amplitude of the first harmonic component being suppressed to a minimum.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: May 14, 2024
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomoki Nakata, Takayuki Miyajima, Nobuo Hayashi
  • Publication number: 20240149196
    Abstract: A method of producing an air filter includes a first step of preparing a tow band and a second step of obtaining a filter medium layer that includes first fibers obtained by applying tension to the tow band to spread the tow band and the first fibers having an average fiber diameter of 5 ?m or more and 50 ?m or less and second fibers disposed in gaps between the first fibers and having an average fiber diameter of 30 nm or more and 1 ?m or less. The second fibers are drawn out from the particulate resin by drawing the particulate resin, and the particulate resin is drawn by separating the first fibers from each other so that a gap is formed between the first fibers during the spreading of the tow band.
    Type: Application
    Filed: January 12, 2024
    Publication date: May 9, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Satoshi HARA, Hiroaki SHINTANI, Yoshitaka ITO
  • Publication number: 20240150965
    Abstract: A paper oil-resistant agent composition containing a hydrocarbon group-containing polymer having a repeating unit formed from a monomer having a hydrocarbon group having 7 to 40 carbon atoms and an NH group-containing group in an amount of 80% by weight or more based on the polymer. Also disclosed is an oil-resistant paper to which the hydrocarbon group-containing polymer in the paper oil-resistant agent composition adheres, a method for producing paper which includes treating paper with the paper oil-resistant composition, and a method for producing molded pulp which includes filling a mold with the paper oil-resistant agent composition and a pulp slurry, and molding the pulp.
    Type: Application
    Filed: January 5, 2024
    Publication date: May 9, 2024
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tetsuya UEHARA, Daisuke NOGUCHI, Norimasa UESUGI, Hisako NAKAMURA, Shun SHIBATA, Michio MATSUDA, Teruyuki FUKUDA