Patents by Inventor Naofumi Yokoyama
Naofumi Yokoyama 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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Patent number: 10006463Abstract: An air conditioning apparatus includes a centrifugal fan mounted in an interior of a casing and a pressure sensor. The pressure sensor can have a primary-side pressure detection tube opened in a position adjacent to a circumferential part of the casing on an inlet side surface of the bell mouth of the fan when the bell mouth is seen from a direction along the rotary shaft to detect a primary-side pressure of the centrifugal fan. Alternatively, the pressure sensor can have a primary-side pressure detection tube opened in a position adjacent to a circumferential part of the casing on a heat exchanger compartment side surface of the partition member when the partition member is seen from a direction along the rotary shaft to detect a primary-side pressure of the centrifugal fan.Type: GrantFiled: April 15, 2015Date of Patent: June 26, 2018Assignee: Daikin Industries, Ltd.Inventors: Takashi Kashihara, Takahiro Yamasaki, Naofumi Yokoyama, Tsuyoshi Yokomizo
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Patent number: 9945568Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, a centrifugal fan, a heater and a fan heat shield. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along an opening direction of the fan entrance and an opening direction of the blow-out port, and the bladed wheel being made of resin. The heater is mounted in a blow-out port opposed space opposed to the blow-out port within a fan downwind space located on a downwind side of the bladed wheel within the fan compartment. The fan heat shield member is mounted in the fan downwind space in order to cover a part of the bladed wheel that is opposed to the heater.Type: GrantFiled: April 15, 2015Date of Patent: April 17, 2018Assignee: Daikin Industries, Ltd.Inventors: Naofumi Yokoyama, Tsuyoshi Yokomizo, Takahiro Yamasaki, Takashi Kashihara, Akihiko Mori
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Patent number: 9903386Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger and a centrifugal fan. The centrifugal fan includes a hub and a bladed wheel having a plurality of rearward blades and sucks air existing in the heat exchanger compartment into the fan compartment through the fan entrance. The bladed wheel is mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along an opening direction of the fan entrance and an opening direction of the blow-out port. The hub connects blow-out port side ends of the plural rearward blades and is configured to be rotated about the rotary shaft. The hub has an outer diameter smaller than an outer diameter of the rearward blades.Type: GrantFiled: May 11, 2015Date of Patent: February 27, 2018Assignee: Daikin Industries, Ltd.Inventors: Takahiro Yamasaki, Takashi Kashihara, Kaname Maruyama, Tsunehisa Sanagi, Naofumi Yokoyama
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Publication number: 20180010836Abstract: A heat transfer unit includes: an electrical component casing defining an internal space, the internal space housing a transformer together with a control board and a power supply board; and a cooling unit which cools an electronic component on the power supply board during operation of a compressor.Type: ApplicationFiled: July 6, 2017Publication date: January 11, 2018Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazuya HIRAHARA, Satoshi YAGI, Naofumi YOKOYAMA
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Patent number: 9765989Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing and having a fan entrance, a heat exchanger, a first drain pan mounted in the heat exchanger to receive water produced by dew condensation in the heat exchanger, and a centrifugal fan. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along the fan entrance. The first drain is disposed adjacent to a drain pan nearby lateral part of multiple lateral parts of the casing that are disposed along the opening direction of the fan entrance. The rotary shaft is disposed adjacent to a bladed wheel nearby lateral part of the multiple lateral parts of the casing and being opposed to the drain pan nearby lateral part.Type: GrantFiled: April 15, 2015Date of Patent: September 19, 2017Assignee: Daikin Industries, Inc.Inventors: Naofumi Yokoyama, Takahiro Yamasaki, Takashi Kashihara, Tsuyoshi Yokomizo
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Patent number: 9702588Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, and a centrifugal fan. The partition member has a fan entrance bored in opposition to the blow-out port. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along the fan entrance and the blow-out port. The rotary shaft is disposed adjacent to a bladed wheel nearby lateral part of multiple lateral parts of the casing that are disposed along the opening direction of the fan entrance and the opening direction of the blow-out port. The blow-out port is at least partially disposed in a position adjacent to a blow-out port nearby lateral part of the multiple lateral parts of the casing and being opposed to the bladed wheel nearby lateral part.Type: GrantFiled: April 15, 2015Date of Patent: July 11, 2017Assignee: Daikin Industries, Ltd.Inventors: Naofumi Yokoyama, Takahiro Yamasaki, Takashi Kashihara, Tsuyoshi Yokomizo
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Patent number: 9696062Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, a centrifugal fan, and a heater. The centrifugal fan includes a bladed wheel having a plurality of rearward blades and sucks air existing in the heat exchanger compartment into the fan compartment through the fan entrance. The bladed wheel is mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along an opening direction of the fan entrance and an opening direction of the blow-out port. The heater is mounted in a blow-out port opposed space. The blow-out port opposed space is a region opposed to the blow-out port within a fan downwind space. The fan downwind space is a space located on a downwind side of the bladed wheel within the fan compartment.Type: GrantFiled: April 15, 2015Date of Patent: July 4, 2017Assignee: Daikin Industries, Ltd.Inventors: Takahiro Yamasaki, Tsunehisa Sanagi, Naofumi Yokoyama, Takashi Kashihara, Akihiko Mori
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Patent number: 9618216Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, and a centrifugal fan. The blow-out port is at least partially disposed adjacent to a blow-out port nearby lateral part of the casing along an opening direction of a fan entrance and the blow-out port. A fan downwind space is located on a downwind side of a bladed wheel within a fan compartment, and has a blow-out port opposed space and a blow-out port non-opposed space. A first guide member directs air existing in the blow-out port non-opposed space toward the blow-out port opposed space, and is mounted in a boundary region located astride of regions located on forward and rearward sides in a rotary direction within the blow-out port non-opposed and blow-out port opposed spaces, respectively.Type: GrantFiled: April 15, 2015Date of Patent: April 11, 2017Assignee: Daikin Industries, Ltd.Inventors: Takashi Kashihara, Tsunehisa Sanagi, Takahiro Yamasaki, Naofumi Yokoyama, Tsuyoshi Yokomizo
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Publication number: 20150330403Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger and a centrifugal fan. The centrifugal fan includes a hub and a bladed wheel having a plurality of rearward blades and sucks air existing in the heat exchanger compartment into the fan compartment through the fan entrance. The bladed wheel is mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along an opening direction of the fan entrance and an opening direction of the blow-out port. The hub connects blow-out port side ends of the plural rearward blades and is configured to be rotated about the rotary shaft. The hub has an outer diameter smaller than an outer diameter of the rearward blades.Type: ApplicationFiled: May 11, 2015Publication date: November 19, 2015Inventors: Takahiro YAMASAKI, Takashi KASHIHARA, Kaname MARUYAMA, Tsunehisa SANAGI, Naofumi YOKOYAMA
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Publication number: 20150300360Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, a centrifugal fan, a heater and a fan heat shield. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along an opening direction of the fan entrance and an opening direction of the blow-out port, and the bladed wheel being made of resin. The heater is mounted in a blow-out port opposed space opposed to the blow-out port within a fan downwind space located on a downwind side of the bladed wheel within the fan compartment. The fan heat shield member is mounted in the fan downwind space in order to cover a part of the bladed wheel that is opposed to the heater.Type: ApplicationFiled: April 15, 2015Publication date: October 22, 2015Inventors: Naofumi YOKOYAMA, Tsuyoshi YOKOMIZO, Takahiro YAMASAKI, Takashi KASHIHARA, Akihiko MORI
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Publication number: 20150300669Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, and a centrifugal fan. The blow-out port is at least partially disposed adjacent to a blow-out port nearby lateral part of the casing along an opening direction of a fan entrance and the blow-out port. A fan downwind space is located on a downwind side of a bladed wheel within a fan compartment, and has a blow-out port opposed space and a blow-out port non-opposed space. A first guide member directs air existing in the blow-out port non-opposed space toward the blow-out port opposed space, and is mounted in a boundary region located astride of regions located on forward and rearward sides in a rotary direction within the blow-out port non-opposed and blow-out port opposed spaces, respectively.Type: ApplicationFiled: April 15, 2015Publication date: October 22, 2015Inventors: Takashi KASHIHARA, Tsunehisa SANAGI, Takahiro YAMASAKI, Naofumi YOKOYAMA, Tsuyoshi YOKOMIZO
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Publication number: 20150300359Abstract: An air conditioning apparatus includes a centrifugal fan mounted in an interior of a casing and a pressure sensor. The pressure sensor can have a primary-side pressure detection tube opened in a position adjacent to a circumferential part of the casing on an inlet side surface of the bell mouth of the fan when the bell mouth is seen from a direction along the rotary shaft to detect a primary-side pressure of the centrifugal fan. Alternatively, the pressure sensor can have a primary-side pressure detection tube opened in a position adjacent to a circumferential part of the casing on a heat exchanger compartment side surface of the partition member when the partition member is seen from a direction along the rotary shaft to detect a primary-side pressure of the centrifugal fan.Type: ApplicationFiled: April 15, 2015Publication date: October 22, 2015Inventors: Takashi KASHIHARA, Takahiro YAMASAKI, Naofumi YOKOYAMA, Tsuyoshi YOKOMIZO
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Publication number: 20150300668Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, a centrifugal fan, and a heater. The centrifugal fan includes a bladed wheel having a plurality of rearward blades and sucks air existing in the heat exchanger compartment into the fan compartment through the fan entrance. The bladed wheel is mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along an opening direction of the fan entrance and an opening direction of the blow-out port. The heater is mounted in a blow-out port opposed space. The blow-out port opposed space is a region opposed to the blow-out port within a fan downwind space. The fan downwind space is a space located on a downwind side of the bladed wheel within the fan compartment.Type: ApplicationFiled: April 15, 2015Publication date: October 22, 2015Inventors: Takahiro YAMASAKI, Tsunehisa SANAGI, Naofumi YOKOYAMA, Takashi KASHIHARA, Akihiko MORI
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Publication number: 20150300688Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing, a heat exchanger, and a centrifugal fan. The partition member has a fan entrance bored in opposition to the blow-out port. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along the fan entrance and the blow-out port. The rotary shaft is disposed adjacent to a bladed wheel nearby lateral part of multiple lateral parts of the casing that are disposed along the opening direction of the fan entrance and the opening direction of the blow-out port. The blow-out port is at least partially disposed in a position adjacent to a blow-out port nearby lateral part of the multiple lateral parts of the casing and being opposed to the bladed wheel nearby lateral part.Type: ApplicationFiled: April 15, 2015Publication date: October 22, 2015Inventors: Naofumi YOKOYAMA, Takahiro YAMASAKI, Takashi KASHIHARA, Tsuyoshi YOKOMIZO
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Publication number: 20150285523Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing and having a fan entrance, a heat exchanger, a first drain pan mounted in the heat exchanger to receive water produced by dew condensation in the heat exchanger, and a centrifugal fan. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along the fan entrance. The first drain is disposed adjacent to a drain pan nearby lateral part of multiple lateral parts of the casing that are disposed along the opening direction of the fan entrance. The rotary shaft is disposed adjacent to a bladed wheel nearby lateral part of the multiple lateral parts of the casing and being opposed to the drain pan nearby lateral part.Type: ApplicationFiled: April 15, 2015Publication date: October 8, 2015Inventors: Naofumi YOKOYAMA, Takahiro YAMASAKI, Takashi KASHIHARA, Tsuyoshi YOKOMIZO
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Patent number: 8106726Abstract: A surface acoustic wave device includes a pair of reflectors and an interdigital transducer having a cross electrode having a interdigitated portion and a dummy portion and a dummy electrode. The dummy electrode has a length different from the length of the dummy portion of the cross electrode arranged adjacent to the dummy electrode.Type: GrantFiled: January 17, 2006Date of Patent: January 31, 2012Assignee: National University Corporation Chiba UniversityInventors: Kenya Hashimoto, Masatsune Yamaguchi, Tatsuya Omori, Naofumi Yokoyama, Kenji Matsuda
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Publication number: 20090206954Abstract: A surface acoustic wave device includes a pair of reflectors and an interdigital transducer having a cross electrode having a interdigitated portion and a dummy portion and a dummy electrode. The dummy electrode has a length different from the length of the dummy portion of the cross electrode arranged adjacent to the dummy electrode.Type: ApplicationFiled: January 17, 2006Publication date: August 20, 2009Applicant: National University Corporation Chiba UniversityInventors: Kenya Hashimoto, Masatsune Yamaguchi, Tatsuya Omori, Naofumi Yokoyama, Kenji Matsuda