Patents by Inventor Fumihiko Ishizono
Fumihiko Ishizono 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: 20160131134Abstract: A scroll compressor to compress fluid in a compression chamber formed by combining a scroll wrap of a fixed scroll and a scroll wrap of an orbiting scroll, the scroll wrap of the fixed scroll and the scroll wrap of the orbiting scroll each having a scroll inner end part having a bulb shape defined by an outer surface involute curve, an inner surface involute curve, and a plurality of arcs connecting an end of the outer surface involute curve and an end of the inner surface involute curve, at least one of the scroll inner end parts being formed in an n-tier stair-like shape in which n?3) number of bulb shapes are stacked on top of one another in an upright direction of the scroll wrap, the scroll compressor being configured to satisfy ?os(0)>?os(1)>?os(2)> . . . >?os(n?1) where involute roll angles of the outer surface involute curve in tiers of the stair-like shape of the scroll inner end part are ?os(0), ?os(1), ?os(2), . . . , ?os(n?1), respectively, from a wrap tip side to a wrap root side.Type: ApplicationFiled: September 19, 2013Publication date: May 12, 2016Inventors: Masayuki KAKUDA, Kohei TATSUWAKI, Masaya OKAMOTO, Koichi FUKUHARA, Fumihiko ISHIZONO, Masaaki SUGAWA
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Patent number: 9169839Abstract: A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed.Type: GrantFiled: February 4, 2014Date of Patent: October 27, 2015Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Fumihiko Ishizono, Hideaki Maeyama, Takeshi Fushiki, Taro Kato
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Publication number: 20150300714Abstract: A controller, at least during the heating operation, controls the opening degree of a second expansion device and/or a third expansion device based on a discharge refrigerant temperature detected by a discharge refrigerant temperature detector, or a value computed using the discharge refrigerant temperature, and causes refrigerant having a quality equal to or greater than 0.9 and less than or equal to 0.99 to be suctioned into a compressor.Type: ApplicationFiled: November 21, 2012Publication date: October 22, 2015Applicant: Mitsubishi Electric CorporationInventors: Katsuhiro ISHIMURA, Koji YAMASHITA, Shinichi WAKAMOTO, Naofumi TAKENAKA, Fumihiko ISHIZONO
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Publication number: 20140154116Abstract: A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed.Type: ApplicationFiled: February 4, 2014Publication date: June 5, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Fumihiko ISHIZONO, Hideaki MAEYAMA, Takeshi FUSHIKI, Taro KATO
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Patent number: 8672646Abstract: A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed.Type: GrantFiled: June 12, 2009Date of Patent: March 18, 2014Assignee: Mitsubishi Electric CorporationInventors: Fumihiko Ishizono, Hideaki Maeyama, Takeshi Fushiki, Taro Kato
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Patent number: 8511112Abstract: A refrigeration cycle apparatus which is capable of performing matching of the volumetric flow rate without performing pre-expansion it obtained. A refrigeration circuit includes a compression unit including a main compressor and a second compressor, a gas cooler, an expansion mechanism, and an evaporator interconnected with pipes, and a sub-compression mechanism driven by power recovered by the expansion mechanism, a suction side of the sub-compression mechanism is connected to a compression process of the compression unit, a discharge side of the sub-compression mechanism is connected to an inlet side of the gas cooler, and flow rate of refrigerant flowing into the sub-compression mechanism is controlled.Type: GrantFiled: May 28, 2010Date of Patent: August 20, 2013Assignee: Mitsubishi Electric CorporationInventors: Masayuki Kakuda, Fumihiko Ishizono, Hideaki Nagata, Naofumi Takenaka, Takashi Okazaki, Mihoko Shimoji, Shin Sekiya, Toshihide Koda
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Patent number: 8475149Abstract: A scroll fluid machine that suppresses fluctuations in a port aperture area during each revolution of an orbiting scroll. Suction ports for sucking in a working fluid are disposed on a second base plate to have openings in a vicinity of a winding start end portion of a second spiral tooth, and near an inward facing surface of the second spiral tooth at a position separated by an involute angle approximately 90° from the winding start end portion of the second spiral tooth. Discharge ports for discharging the working fluid are disposed on a first base plate to have openings in a vicinity of a winding start end portion of a first spiral tooth, and near an inward facing surface of the first spiral tooth at a position separated by an involute angle approximately 90° from the winding start end portion of the first spiral tooth.Type: GrantFiled: January 5, 2009Date of Patent: July 2, 2013Assignee: Mitsubishi Electric CorporationInventors: Masayuki Kakuda, Fumihiko Ishizono, Hideaki Nagata, Mihoko Shimoji, Shin Sekiya, Toshihide Koda
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Publication number: 20120060548Abstract: A refrigeration cycle apparatus which is capable of performing matching of the volumetric flow rate without performing pre-expansion it obtained. A refrigeration circuit includes a compression unit including a main compressor and a second compressor, a gas cooler, an expansion mechanism, and an evaporator interconnected with pipes, and a sub-compression mechanism driven by power recovered by the expansion mechanism, a suction side of the sub-compression mechanism is connected to a compression process of the compression unit, a discharge side of the sub-compression mechanism is connected to an inlet side of the gas cooler, and flow rate of refrigerant flowing into the sub-compression mechanism is controlled.Type: ApplicationFiled: May 28, 2010Publication date: March 15, 2012Applicant: Mitsubishi Electric CorporationInventors: Masayuki Kakuda, Fumihiko Ishizono, Hideaki Nagata, Naofumi Takenaka, Takashi Okazaki, Mihoko Shimoji, Shin Sekiya, Toshihide Koda
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Patent number: 8128388Abstract: A scroll-type expansion machine includes an expansion mechanism including an orbiting scroll and a first fixed scroll for expanding a refrigerant and recovering a power, a sub-expansion mechanism including an orbiting scroll and a second fixed scroll for compressing the refrigerant by the power recovered by the expansion mechanism, and a seal ring disposed in at least one of an outer circumference portion of the sub-compression mechanism or an outer circumference portion of the expansion mechanism. An oil flow path is opened in an upper space of a hermetic vessel to make the upper space and a lower space at a compressed pressure of the sub-compression mechanism, and the lower space is provided with an oil pipe for communicating with the main compressor.Type: GrantFiled: September 28, 2006Date of Patent: March 6, 2012Assignee: Mitsubishi Electric CorporationInventors: Mihoko Shimoji, Masayuki Kakuda, Toshihide Koda, Shin Sekiya, Fumihiko Ishizono, Tomokazu Matsui
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Publication number: 20110081264Abstract: A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed.Type: ApplicationFiled: June 12, 2009Publication date: April 7, 2011Inventors: Fumihiko Ishizono, Hideaki Maeyama, Takeshi fushiki, Taro Kato
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Patent number: 7909592Abstract: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll.Type: GrantFiled: March 26, 2009Date of Patent: March 22, 2011Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kenji Yano, Toshiyuki Nakamura, Masaaki Sugawa, Kunio Tojo, Fumihiko Ishizono, Masayuki Kakuda, Shin Sekiya, Masahiro Sugihara, Toshihide Koda
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Publication number: 20110027114Abstract: A scroll fluid machine that suppresses fluctuations in a port aperture area during each revolution of an orbiting scroll. Suction ports for sucking in a working fluid are disposed on a second base plate to have openings in a vicinity of a winding start end portion of a second spiral tooth, and near an inward facing surface of the second spiral tooth at a position separated by an involute angle approximately 90° from the winding start end portion of the second spiral tooth. Discharge ports for discharging the working fluid are disposed on a first base plate to have openings in a vicinity of a winding start end portion of a first spiral tooth, and near an inward facing surface of the first spiral tooth at a position separated by an involute angle approximately 90° from the winding start end portion of the first spiral tooth.Type: ApplicationFiled: January 5, 2009Publication date: February 3, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Masayuki Kakuda, Fumihiko Ishizono, Hideaki Nagata, Mihoko Shimoji, Shin Sekiya, Toshihide Koda
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Patent number: 7766633Abstract: A scroll compressor includes a compression section having an orbiting scroll with volutes that are substantially symmetrically formed on both surfaces of an orbiting base plate. A main shaft penetrates through and is fixed to a center portion of the base plate. A pair of fixed scrolls is placed on both surfaces of the orbiting scroll, and has volutes which correspond to the respective volutes of the orbiting scroll to form compression chambers. The main shaft has a notch part which is formed at a portion penetrating through the orbiting scroll and fixed scrolls. A slider is provided which has an eccentric hole including a flat slide surface corresponding to the notch part. The slider is fitted to the main shaft where the notch part is formed. The slider is made slidable in a direction orthogonal to a length direction of the main shaft by the flat slide surface.Type: GrantFiled: December 22, 2004Date of Patent: August 3, 2010Assignee: Mitsubishi Electric CorporationInventors: Toshiyuki Nakamura, Kenji Yano, Fumihiko Ishizono, Kunio Tojo, Masaaki Sugawa, Masahiro Sugihara, Masayuki Kakuda, Shin Sekiya, Toshihide Koda
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Publication number: 20100014999Abstract: A scroll-type expansion machine includes an expansion mechanism including an orbiting scroll and a first fixed scroll for expanding a refrigerant and recovering a power, a sub-expansion mechanism including an orbiting scroll and a second fixed scroll for compressing the refrigerant by the power recovered by the expansion mechanism, and a seal ring disposed in at least one of an outer circumference portion of the sub-compression mechanism or an outer circumference portion of the expansion mechanism. An oil flow path is opened in an upper space of a hermetic vessel to make the upper space and a lower space at a compressed pressure of the sub-compression mechanism, and the lower space is provided with an oil pipe for communicating with the main compressor.Type: ApplicationFiled: September 28, 2006Publication date: January 21, 2010Applicant: Mitsubishi Electric CorporationInventors: Mihoko Shimoji, Masayuki Kakuda, Toshihide Koda, Shin Sekiya, Fumihiko Ishizono, Tomokazu Matsui
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Patent number: 7645130Abstract: A scroll compressor that has reduced leakage loss and high efficiency includes an orbiting scroll that has spiral teeth on two surfaces, and a fixed scrolls that face the surfaces of the orbiting scroll and that have spiral teeth that intermesh with the spiral of the orbiting scroll. Tip seals are mounted only to a spiral tooth of one of the fixed scrolls that intermeshes with a spiral tooth of the orbiting scroll and a spiral tooth of the orbiting scroll.Type: GrantFiled: January 30, 2006Date of Patent: January 12, 2010Assignee: Mitsubishi Electric CorporationInventors: Shin Sekiya, Masayuki Kakuda, Toshihide Koda, Toshiyuki Nakamura, Kunio Tojo, Kenji Yano, Masaaki Sugawa, Fumihiko Ishizono, Masahiro Sugihara
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Patent number: 7614860Abstract: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll.Type: GrantFiled: December 22, 2004Date of Patent: November 10, 2009Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kenji Yano, Toshiyuki Nakamura, Masaaki Sugawa, Kunio Tojo, Fumihiko Ishizono, Masayuki Kakuda, Shin Sekiya, Masahiro Sugihara, Toshihide Koda
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Publication number: 20090185936Abstract: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll.Type: ApplicationFiled: March 26, 2009Publication date: July 23, 2009Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Kenji Yano, Toshiyuki Nakamura, Masaaki Sugawa, Kunio Tojo, Fumihiko Ishizono, Masayuki Kakuda, Shin Sekiya, Masahiro Sugihara, Toshihide Koda
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Publication number: 20090123315Abstract: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll.Type: ApplicationFiled: December 22, 2004Publication date: May 14, 2009Applicant: Mitsubishi Electric CorporationInventors: Toshiyuki Nakamura, Kenji Yano, Fumihiko Ishizono, Kunio Tojo, Masaaki Sugawa, Masahiro Sugihara, Masayuki Kakuda, Shin Sekiya, Toshihide Koda
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Publication number: 20080219871Abstract: A scroll compressor is provided which has favorable assembling property, does not require a thrust bearing, has a bearing structure for bearing a compression section at both sides thereof and has a simple structure of a scroll.Type: ApplicationFiled: December 22, 2004Publication date: September 11, 2008Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Kenji Yano, Toshiyuki Nakamura, Masaaki Sugawa, Kunio Tojo, Fumihiko Ishizono, Masayuki Kakuda, Shin Sekiya, Masahiro Sugihara, Toshihide Koda
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Publication number: 20080193313Abstract: The present invention provides a scroll compressor that has reduced leakage loss and high efficiency. In the present invention, an orbiting scroll 31 that has spiral teeth 31L and 31M on two surfaces, and a fixed scrolls 33 and 34 that are installed so as to face the surfaces of the orbiting scroll 31 and that have spiral teeth 33E and 34E that intermesh with the spiral teeth 31L and 31M of the orbiting scroll 31 are included, and tip seals are mounted only to a spiral tooth of the fixed scroll that intermeshes with a first spiral tooth of the orbiting scroll 31 and to the first spiral tooth of the orbiting scroll 31.Type: ApplicationFiled: January 30, 2006Publication date: August 14, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shin Sekiya, Masayuki Kakuda, Toshihide Koda, Toshiyuki Nakamura, Kunio Tojo, Kenji Yano, Masaaki Sugawa, Fumihiko Ishizono, Masahiro Sugihara