Patents by Inventor Kazuhiro Furusho
Kazuhiro Furusho 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: 20100275634Abstract: A refrigerant circuit (11) includes an oil separator (60) configured to separate oil from high pressure refrigerant, and an oil feed circuit (70) configured to feed the oil separated in the oil separator (60) to a compression mechanism (20) so as to cool the refrigerant in the course of a compression phase of the compression mechanism (20). The oil feed circuit (70) includes a recovery mechanism (40) configured to recover energy of the oil separated in the oil separator (60). In the compression mechanism (20), the refrigerant is cooled by the oil, thereby reducing power of the compression mechanism (20). Simultaneously, in the recovery mechanism (40), power required to increase pressure of the oil in the compression mechanism (20) is recovered.Type: ApplicationFiled: February 3, 2009Publication date: November 4, 2010Inventors: Tetsuya Okamoto, Kazuhiro Furusho, Takayuki Kawano, Shinichi Kasahara, Masakazu Okamoto, Takahiro Yamaguchi, Michio Moriwaki, Syuuji Furui, Atsushi Yoshimi, Shuuji Fujimoto
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Patent number: 7806672Abstract: In a compression mechanism of a rotary compressor, a cylinder chamber is defined by a cylinder and a second housing. A back surface side gap is defined between an end plate part of the cylinder and a flat plate part of a first housing. The first housing is provided with a communicating path and a differential pressure regulating valve. When the difference between the suction pressure and the discharge pressure is small, the discharge pressure is introduced through the communicating path to an intermediate gap whereby both an internal gap and the intermediate gap are placed at the same pressure as the discharge pressure. Conversely, when the difference between the discharge pressure and the suction pressure is great, the communicating path is made discontinuous by the differential pressure regulating valve whereby the intermediate gap is placed at an intermediate pressure lower than the discharge pressure.Type: GrantFiled: May 23, 2006Date of Patent: October 5, 2010Assignee: Daikin Industries, Ltd.Inventors: Kazuhiro Furusho, Takazo Sotojima, Takashi Shimizu, Kazutaka Hori, Yoshitaka Shibamoto, Masanori Masuda
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Patent number: 7802972Abstract: A valve guard for restricting the amount of deformation of a valve disc has a main body part abuttable with the back surface of the valve disc, and a fixation part extending to outside of a receding part. Upon mounting the valve guard to an end plate part, the fixation part is firmly attached to the outside of the receding part of the end plate part.Type: GrantFiled: April 4, 2006Date of Patent: September 28, 2010Assignee: Daikin Industries, Ltd.Inventors: Takashi Shimizu, Yoshitaka Shibamoto, Kazuhiro Furusho, Kazutaka Hori, Takazo Sotojima, Masanori Masuda
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Patent number: 7753663Abstract: A bolt hole receiving a fixing bolt is formed in a portion of an end plate overlapping an annular piston or a fixed wrap as viewed in a thickness direction of the end plate to open at the back face of the end plate. In fixing a discharge valve to the end plate, the fixing bolt is screwed into the bolt hole.Type: GrantFiled: April 25, 2006Date of Patent: July 13, 2010Assignee: Daikin Industries, Ltd.Inventors: Takashi Shimizu, Yoshitaka Shibamoto, Kazuhiro Furusho, Kazutaka Hori, Takazo Sotojima, Masanori Masuda
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Publication number: 20100166577Abstract: A hermetic compressor is disposed with an annular motor stator, a motor rotor, a casing and plural spot joining portions. The motor rotor is disposed such that it may freely rotate in a space inside the motor stator. The casing includes a cylindrical portion. The cylindrical portion houses the motor stator and the motor rotor. The plural spot joining portions fix the motor stator to the cylindrical portion by spot joining in a state where a clearance is secured between the motor stator and the cylindrical portion.Type: ApplicationFiled: August 8, 2007Publication date: July 1, 2010Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Masahide Higuchi, Masanori Masuda, Toshiaki Yoshii, Kazuhiro Furusho, Satoshi Ishikawa
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Patent number: 7722340Abstract: A blade moves backward/forward to enter four different states, namely a first state in which the tip thereof is in sliding contact with the internal peripheral surface of an external side cylinder part, a second state in which the tip is positioned in the cutaway portion of a ring-shaped piston to thereby place only an external side cylinder chamber at rest, a third state in which the tip is positioned in the cutaway portion of an internal side cylinder part to thereby place only the external side cylinder chamber and an intermediate cylinder chamber at rest, and a whole rest state in which the tip is positioned in a blade groove to thereby place all of the cylinder chambers at rest.Type: GrantFiled: March 20, 2006Date of Patent: May 25, 2010Assignee: Daikin Industries, Ltd.Inventors: Masanori Masuda, Yoshitaka Shibamoto, Kazuhiro Furusho, Takashi Shimizu, Takazo Sotojima
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Publication number: 20100119378Abstract: A rotary compressor includes a compression mechanism, an electric motor and a controller. The compression mechanism includes a piston and a cylinder having two cylinder chambers. The electric motor is configured to change volumes of the cylinder chambers by eccentrically moving the cylinder and the piston relative to each other. The controller is configured to change an output torque of the electric motor in accordance with a variation in a load torque of the compression mechanism in one turn of rotation.Type: ApplicationFiled: February 28, 2007Publication date: May 13, 2010Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Yoshitaka Shibamoto, Takashi Shimizu, Masanori Masuda, Takazou Sotojima, Kazuhiro Furusho, Akio Yamagiwa, Yoshiki Yasuda
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Publication number: 20100111737Abstract: A compressor includes a compression mechanism having two opposed end plates, a fixed member disposed between the two end plates, a movable member disposed between the two end plates, a bypass passage, and an opener/closer. The movable member is arranged to eccentrically move about a predetermined rotational axis to compress refrigerant in a compression chamber formed between the fixed member and the movable member. The bypass passageway has an upstream end opened to the compression chamber through which refrigerant is partially ejected from the compression chamber so as to be returned to a suction side of the compression mechanism. The cross section of the upstream end of the bypass passage is preferably elongated circumferentially about the rotational axis. The compression mechanism may include a plurality of bypass passages and a plurality of openers/closers.Type: ApplicationFiled: January 10, 2008Publication date: May 6, 2010Applicant: Daikin Industries, Ltd.Inventors: Hirofumi Higashi, Kazuhiro Furusho
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Publication number: 20100092322Abstract: A rotary fluid machinery includes a fixed member, a drive shaft driven and rotated about a rotation axis, a movable member, a movable member support part and a reverse moment generating mechanism. The movable member is rotatably mounted at the drive shaft with its center being eccentrically disposed relative to the rotation axis, with the movable member and the fixed member forming a fluid chamber. Revolution of the movable member changes the volume of the fluid chamber. The movable member is configured to swing in association with its revolution. The reverse moment generating mechanism generates a moment in a reverse direction about the rotation axis relative to a moment about the rotation axis caused by the revolving movement of the movable member.Type: ApplicationFiled: October 17, 2007Publication date: April 15, 2010Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazuhiro Furusho, Takashi Shimizu, Masanori Masuda, Yoshitaka Shibamoto, Takazo Sotojima, Kenichi Sata
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Publication number: 20100061871Abstract: A compressor slider has a carbon content of 2.0 wt % to 2.7 wt %, a silicon content of 1.0 wt % to 3.0 wt %, a balance of iron that includes unavoidable impurities, graphite that is smaller than the flake graphite of flake graphite cast iron, and a hardness that is greater than HRB 90 but less than HRB 100 in at least a portion of the slider.Type: ApplicationFiled: February 26, 2007Publication date: March 11, 2010Applicant: DAIKIN INSUDTRIES, LTDInventors: Mie Arai, Hiroyuki Yamaji, Mitsuhiko Kishikawa, Satoshi Yamamoto, Mikio Kajiwara, Takashi Hirouchi, Yasuhiro Murakami, Masanori Masuda, Kazuhiro Furusho
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Publication number: 20090277216Abstract: A bolt hole receiving a fixing bolt is formed in a portion of an end plate overlapping an annular piston or a fixed wrap as viewed in a thickness direction of the end plate to open at the back face of the end plate. In fixing a discharge valve to the end plate, the fixing bolt is screwed into the bolt hole.Type: ApplicationFiled: July 20, 2009Publication date: November 12, 2009Applicant: Daikin Industries, Ltd.Inventors: Takashi SHIMIZU, Yoshitaka SHIBAMOTO, Kazuhiro FURUSHO, Kazutaka HORI, Takazo SOTOJIMA, Masanori MASUDA
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Publication number: 20090238705Abstract: A rotary compressor includes a fixed side and a movable side that is eccentrically movable relative to the fixed side. The movable side moves in response to operation of a drive mechanism, which rotates a drive shaft. The fixed side has a main bearing formed as a unitary part. A cylinder may serve as the movable side, which is coupled through an eccentric part to the drive shaft. The drive shaft is supported by the main bearing. With such an arrangement, a ring-shaped piston may serve as the fixed side, which is formed integrally with the main bearing in a front head.Type: ApplicationFiled: October 19, 2006Publication date: September 24, 2009Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takashi Shimizu, Yoshitaka Shibamoto, Kazuhiro Furusho, Takazou Sotojima, Masanori Masuda
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Publication number: 20090148325Abstract: A valve guard for restricting the amount of deformation of a valve disc has a main body part abuttable with the back surface of the valve disc, and a fixation part extending to outside of a receding part. Upon mounting the valve guard to an end plate part, the fixation part is firmly attached to the outside of the receding part of the end plate part.Type: ApplicationFiled: April 4, 2006Publication date: June 11, 2009Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takashi Shimizu, Yoshitaka Shibamoto, Kazuhiro Furusho, Kazutaka Hori, Takazo Sotojima, Masanori Masuda
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Publication number: 20090142214Abstract: In a compression mechanism of a rotary compressor, a cylinder chamber is defined by a cylinder and a second housing. A back surface side gap is defined between an end plate part of the cylinder and a flat plate part of a first housing. The first housing is provided with a communicating path and a differential pressure regulating valve. When the difference between the suction pressure and the discharge pressure is small, the discharge pressure is introduced through the communicating path to an intermediate gap whereby both an internal gap and the intermediate gap are placed at the same pressure as the discharge pressure. Conversely, when the difference between the discharge pressure and the suction pressure is great, the communicating path is made discontinuous by the differential pressure regulating valve whereby the intermediate gap is placed at an intermediate pressure lower than the discharge pressure.Type: ApplicationFiled: May 23, 2006Publication date: June 4, 2009Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Kazuhiro Furusho, Takazo Sotojima, Takashi Shimizu, Kazutaka Hori, Yoshitaka Shibamoto, Masanori Masuda
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Publication number: 20090074602Abstract: A blade moves backward/forward to enter four different states, namely a first state in which the tip thereof is in sliding contact with the internal peripheral surface of an external side cylinder part, a second state in which the tip is positioned in the cutaway portion of a ring-shaped piston to thereby place only an external side cylinder chamber at rest, a third state in which the tip is positioned in the cutaway portion of an internal side cylinder part to thereby place only the external side cylinder chamber and an intermediate cylinder chamber at rest, and a whole rest state in which the tip is positioned in a blade groove to thereby place all of the cylinder chambers at rest.Type: ApplicationFiled: March 20, 2006Publication date: March 19, 2009Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Masanori Masuda, Yoshitaka Shibamoto, Kazuhiro Furusho, Takashi Shimizu, Takazo Sotojima
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Publication number: 20090074600Abstract: A bolt hole receiving a fixing bolt is formed in a portion of an end plate overlapping an annular piston or a fixed wrap as viewed in a thickness direction of the end plate to open at the back face of the end plate. In fixing a discharge valve o the end plate, the fixing bolt is screwed into the bolt hole.Type: ApplicationFiled: April 25, 2006Publication date: March 19, 2009Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takashi Shimizu, Yoshitaka Shibamoto, Kazuhiro Furusho, Kazutaka Hori, Takazo Sotojima, Masanori Masuda
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Publication number: 20090013714Abstract: A compressor (20) is provided with compression mechanisms (61, 62) to have four compression chambers (61, 62, 63, 64) in total. In the compressor (20), the first compression chamber (61) and the second compression chamber (62) differ in the phase of capacity changing cycle from each other by 180° and the third compression chamber (63) and the fourth compression chamber (64) also differ in the phase of capacity changing cycle from each other by 180°. In a cylinder nonoperating mode, refrigerant is compressed in a single stage in each of the first compression chamber (61) and the second compression chamber (62) while the refrigerant compression operation is halted in the third compression chamber (63) and the fourth compression chamber (64). In a two-stage compression mode, refrigerant compressed in a single stage in each of the first compression chamber (61) and the second compression chamber (62) is further compressed in the third compression chamber (63) and the fourth compression chamber (64).Type: ApplicationFiled: March 6, 2007Publication date: January 15, 2009Inventors: Takahiro Yamaguchi, Satoshi Ishikawa, Masahiro Yamada, Kazuhiro Furusho
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Publication number: 20080152527Abstract: In a positioning apparatus (40), a fixed scroll (34) is positioned with respect to an assembly body (11) in which a compressor motor (25) has been incorporated. In positioning the fixed scroll (34), electric power is supplied to the compressor motor (25) from an inverter (81) to rotate a crank shaft (20) by the compressor motor (25), thereby shifting a movable scroll (31). In the positioning apparatus (40), the shift of the movable scroll (31) leads to calculation of an appropriate position of the fixed scroll (34). A striking unit (70) applies impact force to the fixed scroll (34) to stir the fixed scroll (34) to the appropriate position.Type: ApplicationFiled: January 19, 2006Publication date: June 26, 2008Inventors: Takayuki Takahashi, Toshihiro Susa, Kazuhiro Furusho, Atsushi Suhara, Takashi Hirouchi, Tetsuo Nakata
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Patent number: 7134853Abstract: A flow rate controlling member, provided with a spiral passageway formed on its outer periphery, is inserted into a high pressure fluid introducing passageway formed in an end plate of a movable scroll for the introducing of fluid from a fluid feeding path into a thrust bearing.Type: GrantFiled: June 18, 2003Date of Patent: November 14, 2006Assignee: Daikin Industries, Ltd.Inventors: Hiroyuki Yamaji, Takashi Uekawa, Kazuhiro Furusho
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Publication number: 20050220652Abstract: A flow rate controlling member, provided with a spiral passageway formed on its outer periphery, is inserted into a high pressure fluid introducing passageway formed in an end plate of a movable scroll for the introducing of fluid from a fluid feeding path into a thrust bearing.Type: ApplicationFiled: June 18, 2003Publication date: October 6, 2005Applicant: Daikin Industries, Ltd.Inventors: Hiroyuki Yamaji, Takashi Uekawa, Kazuhiro Furusho