Patents Assigned to Daikin Industries, Ltd.
  • Publication number: 20190257536
    Abstract: A system for air-conditioning and hot-water supply is configured to selectively perform a cooling operation and a heating operation. The system includes: an outdoor unit having a compressor and an outdoor heat exchanger; at least one or more indoor units each of which is connected to the outdoor unit and includes an indoor heat exchanger; a hot-water supply unit connected to the outdoor unit so as to be arranged in parallel to the at least one or more indoor units and including a refrigerant-water heat exchanger; and a controller configured to monitor an occurrence of a request for hot-water supply from the hot-water supply unit during the cooling operation performed at at least one of the indoor units, and then to start the heating operation. The controller is further configured to determine a time point to resume the cooling operation based on at least one of an outdoor temperature and a target temperature of at least one indoor unit in the heating operation.
    Type: Application
    Filed: September 14, 2017
    Publication date: August 22, 2019
    Applicants: DAIKIN INDUSTRIES, LTD., DAIKIN EUROPE N.V.
    Inventors: Hideo CHIKAMI, Tim COESSENS
  • Publication number: 20190260304
    Abstract: The voltage detection circuit (33) is a voltage divider circuit including a plurality of resistances (34a to 34c and 35a to 35c) and detects voltages (Vac1, Vac2) correlating with a power source voltage (Vin) of the AC power source (91). The calculation unit (40) obtains the across voltage (VL) of the reactor (29) using detection results (Vac1, Vac2) of the voltage detection circuit (33), and estimates a power source current (Iin) based on the across voltage (VL). The calculation unit (40) corrects gains of the detection results (Vac1, Vac2) so that a value correlating with an average value per predetermined time period of the estimated power source current (Iin) matches a value correlating with an average value per the predetermined time period of a current (Iinv) downstream of the capacitor (26), and obtains the across voltage (VL) using the detection results (Vac1, Vac2).
    Type: Application
    Filed: September 28, 2017
    Publication date: August 22, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takurou OGAWA, Eiji TOOYAMA, Akiko SERA, Morimitsu SEKIMOTO
  • Publication number: 20190257531
    Abstract: A system for air-conditioning and hot-water supply is configured to selectively perform a cooling operation and heating operation. The system includes: an outdoor unit having a compressor and an outdoor heat exchanger; a plurality of indoor units each of which is connected to the outdoor unit and includes an indoor heat exchanger; a hot-water supply unit connected to the outdoor unit so as to be arranged in parallel to the plurality of indoor units and including a refrigerant-water heat exchanger; and a controller configured to monitor an occurrence of a hot water request for hot-water supply from the hot-water supply unit during the cooling operation performed at at least one of the plurality of indoor units, and then to start the heating operation in accordance with the hot-water request.
    Type: Application
    Filed: September 14, 2017
    Publication date: August 22, 2019
    Applicants: DAIKIN INDUSTRIES, LTD., DAIKIN EUROPE N.V.
    Inventors: Hideo CHIKAMI, Tim COESSENS
  • Publication number: 20190256457
    Abstract: A novel branched fluorine-containing compound represented by formula (1): (Rf—Y?n1L?X-A)n2??(1) wherein L represents a predetermined carbon-containing linker moiety; Rf, in each occurrence, is the same or different and represents fluoroalkyl optionally having at least one ether bond; Y, in each occurrence, is the same or different and represents a predetermined divalent linking group or a bond; RY, in each occurrence, is the same or different and represents hydrogen or an organic group; L represents an (n1+n2)-valent carbon-containing linker moiety having at least one carbon atom; n1 represents a number greater than or equal to 1; n2 represents a number greater than or equal to 1; n1+n2 is a number from 3 to 6; X, in each occurrence, is the same or different and represents a divalent linking group or a bond; A, in each occurrence, is the same or different and represents —ArSO3M or the like; M, in each occurrence, is the same or different and represents hydrogen, —NR4, or a metal salt; and R represents hydr
    Type: Application
    Filed: September 14, 2017
    Publication date: August 22, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masahiro HIGASHI, Moe HOSOKAWA, Akiyoshi YAMAUCHI, Sumi ISHIHARA, Yosuke KISHIKAWA
  • Publication number: 20190257594
    Abstract: An outdoor heat exchanger includes a plurality of flat multi-hole tubes, a return header, a plurality of heat transfer fins, and a partition including a concave-convex portion on the leeward side. A space inside the return header to which the flat multi-hole tubes are connected is formed so as to cause a larger amount of refrigerant to flow on the upstream side than on the downstream side in an airflow direction.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 22, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Satoshi Inoue, Tomohiko Sakamaki, Tomoya Yamaguchi, Ken Satou, Kouju Yamada, Masanori Jindou, Yoshio Oritani
  • Patent number: 10388878
    Abstract: The present invention is a material having excellent performance as an n-type semiconductor material, in particular for organic thin-film solar cells. The present invention provides an n-type semiconductor consisting of a fullerene derivative having a purity of 99% or more, the fullerene derivative being represented by formula (1): wherein ring A represents C60 fullerene; R1 represents a hydrogen atom, alkyl optionally having at least one substituent, or aryl optionally having at least one substituent; and Ar represents aryl optionally substituted with at least one alkyl group.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: August 20, 2019
    Assignees: DAIKIN INDUSTRIES, LTD., OSAKA UNIVERSITY
    Inventors: Takabumi Nagai, Kenji Adachi, Yoshio Aso, Yutaka Ie, Makoto Karakawa
  • Patent number: 10386078
    Abstract: An air conditioning system includes a heat pump unit including a radiator usable with a refrigerant, a gas furnace unit including a heating section arranged to heat passing air, a blower arranged to generate an air flow that passes through the radiator and the heating section, a first temperature sensor provided in a room, and a controller configured to control each action of the heat pump unit, the gas furnace unit, and the blower. The temperature sensor detects an indoor temperature in the room. The controller causes the gas furnace unit to operate as a heat source unit when a difference value obtained by subtracting the indoor temperature from a set temperature is equal to or greater than a first threshold at startup, and causes the heat pump unit to operate as a heat source unit when the difference value is less than the first threshold at startup.
    Type: Grant
    Filed: February 2, 2015
    Date of Patent: August 20, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Hiroshi Yoh, Michio Moriwaki, Masakazu Okamoto
  • Publication number: 20190249912
    Abstract: An air conditioner includes: liquid-side indoor expansion valves corresponding to a liquid side of respective indoor heat exchangers; and gas-side indoor expansion valves corresponding to a gas side of the respective indoor heat exchangers. In a case where both a heating-operation indoor heat exchanger and a heating-stopped indoor heat exchanger are present, the controller of the air conditioner controls the liquid-side indoor expansion valve and the gas-side indoor expansion valve corresponding to the heating-stopped indoor heat exchanger such that an opening degree of the gas-side indoor expansion valve becomes smaller than an opening degree of the liquid-side indoor expansion valve.
    Type: Application
    Filed: September 29, 2017
    Publication date: August 15, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takuro YAMADA, Yuusuke NAKAGAWA, Masahiro HONDA, Yuusuke OKA
  • Publication number: 20190248938
    Abstract: The invention provides a fluoroelastomer composition capable of providing a molded article that is inexpensive and has excellent heat-aging resistance. The fluoroelastomer composition is a peroxide-crosslinkable fluoroelastomer composition containing a fluorine-containing elastomer that contains 25 to 90 mol % of a unit of vinylidene fluoride, 10 to 75 mol % of a unit of a fluorine-containing monomer other than the vinylidene fluoride, 0 to 10 mol % of a unit of a fluorine-free monomer copolymerizable with the vinylidene fluoride, and 0.1% by mass or less of an iodine atom and a bromine atom; an organic peroxide having a specific structure; and a co-crosslinking agent. The organic peroxide is present in an amount of 0.3 to 10 parts by mass relative to 100 parts by mass of the fluorine-containing elastomer.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 15, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Kazuyoshi KAWASAKI
  • Publication number: 20190249309
    Abstract: A pipe is manufactured through injecting a chloride ion-containing aqueous solution into a copper pipe to fill the copper pipe, thereby forming a copper oxide film on an inner surface of the copper pipe.
    Type: Application
    Filed: September 26, 2017
    Publication date: August 15, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventor: Yutaka SHIBATA
  • Publication number: 20190252881
    Abstract: In a device with a built-in active filter, the device incorporating an active filter therein and being connected to an AC power source, the active filter operates based on a value detected by a load information detection unit detecting load information on an AC power source outside the device with a built-in active filter.
    Type: Application
    Filed: December 8, 2017
    Publication date: August 15, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Masaki KONO, Reiji KAWASHIMA, Takayuki FUJITA
  • Patent number: 10381546
    Abstract: An object of the present invention is to provide a bimorph piezoelectric film that enables the production of touch panels and the like that are less influenced by pyroelectric noise due to temperature change, and exhibit high transparency. The present invention provides a bimorph piezoelectric film comprising in sequence a first piezoelectric film, a tackifier layer or an adhesive agent layer, and a second piezoelectric film, the first piezoelectric film and the second piezoelectric film being disposed in such a manner that their surfaces on which electric charges of the same polarity are generated by a temperature increase are each outward-facing, the first piezoelectric film and the second piezoelectric film each having a total light transmittance of 90% or more, and a total haze value of 8.0% or less.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: August 13, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Meiten Kou, Tetsuhiro Kodani, Tomoyuki Gotou, Saori Inaba, Takashi Kanemura
  • Patent number: 10377881
    Abstract: The invention provides a composition capable of providing a molded article that has excellent heat resistance and a small weight change against both fluorine plasma exposure and oxygen plasma exposure during a semiconductor manufacturing step. The composition contains a fluorine-containing polymer and a cage silsesquioxane having a specific structure.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: August 13, 2019
    Assignees: Akita University, DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuya Matsumoto, Mitsutoshi Jikei, Kunio Nishi, Tsuyoshi Noguchi, Fumihiro Kamiya
  • Patent number: 10380706
    Abstract: An equipment management apparatus manages at least one equipment unit that is supplied with energy and that consumes energy. The equipment management apparatus includes a result value storage unit, an adjustment control implementation status storage unit, and a hypothetical value computation unit. The result value storage unit stores result values of an amount of energy consumed in a first particular day by the at least one equipment unit. The result values are stored in association with time slots of the first particular day. The adjustment control implementation status storage unit stores adjustment control implementation status information indicating whether or not energy adjustment control has been performed in each of the time slots of the first particular day. The hypothetical value computation unit computes a hypothetical value of an amount of energy consumed by the at least one equipment unit as if the energy adjustment control had not been performed.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: August 13, 2019
    Assignee: Daikin Industries, Ltd.
    Inventor: Nanae Niikura
  • Publication number: 20190242632
    Abstract: Provided is a refrigeration apparatus that secures safety while suppressing an increase in cost. A refrigeration apparatus performs a refrigeration cycle in a refrigerant circuit including a compressor, a heat source-side heat exchanger, and a usage-side heat exchanger. The refrigeration apparatus comprises a usage-side fan providing an air flow, and a controller. The usage-side fan is disposed in a target space where inside air is cooled. The controller performs a refrigerant leak determination process to determine whether a refrigerant leak occurs, based on a state of a refrigerant in the refrigerant circuit. When the controller performs the refrigerant leak determination process to determine that a refrigerant leak occurs, then the controller performs leakage refrigerant agitation control to operate the usage-side fan so as to suppress local emergence of a region where the refrigerant leaks at a high concentration in the target space.
    Type: Application
    Filed: October 17, 2017
    Publication date: August 8, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Satoru SAKAE, Takahito NAKAYAMA, Takenori MEZAKI
  • Publication number: 20190242602
    Abstract: When refrigerant leakage occurs, a controller in an air conditioner performs first shutoff control to open a liquid relay shutoff valve and close an indoor expansion valve and a gas relay shutoff valve on the basis of information from a refrigerant leakage detector.
    Type: Application
    Filed: April 16, 2019
    Publication date: August 8, 2019
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takuro YAMADA, Yuusuke NAKAGAWA, Yuusuke OKA
  • Patent number: 10371393
    Abstract: An air conditioning system includes a heat pump having a refrigerant radiator, a gas furnace unit having a heating section to heat passing air, a blower generating air flow through the radiator and the heating section, and a controller controlling operation of the heat pump unit, the gas furnace unit, and the blower. The controller has a first operating mode in which the gas furnace unit operates alone as a heat source unit, a second operating mode in which the heat pump unit operates alone as a heat source unit, and a third operating mode in which the gas furnace unit and the heat pump unit operate at the same time as a heat source unit. The controller is configured to select the operating modes based on a parameter relating to outside air temperature that is the temperature of outside air.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: August 6, 2019
    Assignee: Daikin Industries, Ltd.
    Inventors: Masakazu Okamoto, Michio Moriwaki, Hiroshi Yoh
  • Patent number: 10371404
    Abstract: A receiver unit includes: a receiving section receiving a signal of a measurement value (Tm2) transmitted from a wireless temperature sensor unit; an input connector connected to a sensor signal line, the sensor signal line being configured to transfer a signal of a measurement value (Tm1) of the suction air temperature sensor; a signal generator generating a signal serving as an index of indoor temperature, based on the measurement values (Tm1, Tm2) of the wireless temperature sensor unit and the suction air temperature sensor; and a signal output section outputting the signal generated by the signal generator to a controller of an air-conditioning device.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: August 6, 2019
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Toshimichi Nakayama, Yoshiteru Nouchi, Kousuke Shiohama
  • Patent number: D856469
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: August 13, 2019
    Assignee: DAIKIN INDUSTRIES LTD.
    Inventor: Toshihiro Nagashima
  • Patent number: D857184
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: August 20, 2019
    Assignees: DAIKIN INDUSTRIES LTD., DAIKIN EUROPE N.V.
    Inventor: Tom Surmont