Patents by Inventor Takamune Okui
Takamune Okui 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).
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Publication number: 20240117976Abstract: An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.Type: ApplicationFiled: December 19, 2023Publication date: April 11, 2024Applicants: Daikin Industries, Ltd., Goodman Manufacturing Company, L.P.Inventors: Miki Yamada, Junichi Shimoda, Takamune Okui, Yuko Ishida, Joseph Kelly Hearnsberger, David Palazzolo, Sriram Venkat
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Publication number: 20240052628Abstract: A partition has an air blowing function of blowing air to a predetermined region. The partition includes a casing, a blower mechanism arranged in the casing, and a blow-out port formed in the casing. On a virtual plane facing the blow-out port and having a wind velocity of 0.2 m/s or more, an airflow with an average momentum per unit area from 0.05 kg/ms2 to 0.75 kg/ms2 is generated.Type: ApplicationFiled: October 25, 2023Publication date: February 15, 2024Inventors: Yousuke IMAI, Takamune OKUI, Chizuru MURAKAMI
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Patent number: 11859861Abstract: An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.Type: GrantFiled: February 7, 2023Date of Patent: January 2, 2024Assignees: Daikin Industries, Ltd., Goodman Manufacturing Company, L.PInventors: Miki Yamada, Junichi Shimoda, Takamune Okui, Yuko Ishida, Joseph Kelly Hearnsberger, David Palazzolo, Sriram Venkat
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Publication number: 20230175711Abstract: An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.Type: ApplicationFiled: February 7, 2023Publication date: June 8, 2023Applicants: Daikin Industries, Ltd., Goodman Manufacturing Company, L.P.Inventors: Miki Yamada, Junichi Shimoda, Takamune Okui, Yuko Ishida, Joseph Kelly Heamsberger, David Palazzolo, Sriram Venkat
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Patent number: 11578880Abstract: An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.Type: GrantFiled: April 14, 2022Date of Patent: February 14, 2023Assignee: Daikin Industries, Ltd.Inventors: Miki Yamada, Junichi Shimoda, Takamune Okui, Yuko Ishida, Joseph Kelly Hearnsberger, David Palazzolo, Sriram Venkat
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Publication number: 20220333032Abstract: A refrigeration cycle apparatus, refrigerating machine oil and refrigerant leakage prevention agent. The refrigeration cycle apparatus contains a working fluid which contains a refrigerant composition including a refrigerant and a refrigerating machine oil including resin particles of which D50 and D90/D10 are 2.0 ?m to 10.0 ?m and 4.0 to 14.0, respectively.Type: ApplicationFiled: June 24, 2022Publication date: October 20, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Taketo Katou, Akinari Sugiyama, Takamune Okui, Sadayasu Inagaki
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Publication number: 20220235949Abstract: An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.Type: ApplicationFiled: April 14, 2022Publication date: July 28, 2022Inventors: Miki Yamada, Junichi Shimoda, Takamune Okui, Yuko Ishida, Joseph Kelly Hearnsberger, David Palazzolo, Sriram Venkat
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Publication number: 20220128286Abstract: The present disclosure provides an air conditioner including a compressor and a drive circuit configured to drive the compressor. The drive circuit includes an AC path, a rectifier connected to the AC path, a DC path on an output side of the rectifier, a smoothing capacitor connected to the DC path, an inverter connected to the DC path, a switch disposed on an electric path from the AC path to the smoothing capacitor, and a controller configured to close and open the switch during a preheating operation of supplying electricity for preheating the compressor via the inverter.Type: ApplicationFiled: November 14, 2019Publication date: April 28, 2022Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Keito KOTERA, Masahide FUJIWARA, Hironori OGAWA, Takamune OKUI, Yuuko NAKANISHI, Nobuyasu HIRAOKA
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Patent number: 11313568Abstract: An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.Type: GrantFiled: January 17, 2019Date of Patent: April 26, 2022Assignee: Daikin Industries, Ltd.Inventors: Miki Yamada, Junichi Shimoda, Takamune Okui, Yuko Ishida, Joseph Kelly Hearnsberger, David Palazzolo, Sriram Venkat
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Publication number: 20190226692Abstract: An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.Type: ApplicationFiled: January 17, 2019Publication date: July 25, 2019Inventors: Miki Yamada, Junichi Shimoda, Takamune Okui, Yuko Ishida, Joseph Kelly Hearnsberger, David Palazzolo, Sriam Venkat
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Publication number: 20140360223Abstract: In an air-conditioning apparatus, refrigerant flows sequentially through a compressor, an outdoor heat exchanger, expansion mechanisms, and an indoor heat exchanger during a cooling operation, and refrigerant flows sequentially through the compressor, the indoor heat exchanger, the expansion mechanisms, and the outdoor heat exchanger during a heating operation. Capacity of the outdoor heat exchanger is 30% to 90% of the indoor heat exchanger. The expansion mechanisms include an upstream-side and downstream-side expansion mechanisms depressurizing refrigerant from high to intermediate pressure, and from intermediate to low pressure in the refrigerant cycle, respectively. The refrigerant is R32. A refrigerant storage tank that stores the intermediate pressure refrigerant is provided between the upstream-side and downstream side expansion mechanisms.Type: ApplicationFiled: December 19, 2012Publication date: December 11, 2014Inventors: Takayuki Setoguchi, Keisuke Tanimoto, Noriyuki Okuda, Takamune Okui, Junichi Shimoda, Tsuyoshi Yamada
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Publication number: 20130174595Abstract: A refrigeration circuit includes a compressor, an outdoor heat exchanger, an expansion valve, an indoor heat exchanger, and a refrigerant storage tank provided between the outdoor heat exchanger and the expansion value. Refrigerant sequentially flows through the compressor, the outdoor heat exchanger, the expansion valve and the indoor heat exchanger during an air-cooling operation. Refrigerant sequentially flows through the compressor, the indoor heat exchanger, the expansion valve, and the outdoor heat exchanger during an air-warming operation. Preferably the indoor heat exchanger is a cross-fin heat exchanger, and the outdoor heat exchanger is a stacked heat exchanger. Preferably, a capacity of the outdoor heat exchanger is no more than 100% of a capacity of the indoor heat exchanger.Type: ApplicationFiled: September 22, 2011Publication date: July 11, 2013Applicant: Daikin Industries, Ltd.Inventors: Noriyuki Okuda, Takayuki Setoguchi, Keisuke Tanimoto, Takamune Okui