Patents by Inventor Ko Inagaki
Ko Inagaki 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: 20140308141Abstract: A sealed compressor (100) of the present invention comprises an electric component (111), a compression component (117), and a sealed container (101), the compression component includes a shaft (119), a cylinder block (129), a piston (133), and a crank weight (126), a rotor (115) of the electric component has a cylindrical shape, contains a cylindrical space therein, and includes an upper section (116) in which a lower portion of a bearing (131) of a cylinder block is fitted into the cylindrical space, a lower section (115e) to which a lower portion of the main shaft inserted into the through-hole of the bearing and inserted into the cylindrical space is fixedly fitted, and a balance weight (170, 270) placed on an opposite side of the crank weight with respect to the piston.Type: ApplicationFiled: December 26, 2012Publication date: October 16, 2014Applicant: Panasonic CorporationInventors: Yu Haraki, Ko Inagaki, Terumasa Ide, Kiwamu Watanabe
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Publication number: 20140308140Abstract: A hermetic compressor includes a closed vessel for storing lubricating oil, an electric-driving element, and a compressing element driven by the electric-driving element. The compressing element includes a cylinder block forming a compression chamber, a piton that reciprocates inside the compression chamber, and an oiling device for supplying the lubricating oil to an outer circumference of the piston. A first oil groove is concavely formed on the outer circumference of the piston, and a second oil groove is concavely formed on a side opposite to the compression chamber relative to the first oil groove. The second oil groove has a spatial volume same or greater than that of the first oil groove. An expanded clearance portion is provided such that a clearance between the piston and the cylindrical hole portion broadens from a top dead point to a bottom dead point.Type: ApplicationFiled: June 18, 2014Publication date: October 16, 2014Inventors: Ko INAGAKI, Akira NAKANO, Yoshinori ISHIDA, Ichiro MORITA
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Patent number: 8814539Abstract: A hermetic compressor includes a closed vessel for storing lubricating oil, an electric-driving element, and a compressing element driven by the electric-driving element. The compressing element includes a cylinder block forming a compression chamber, a piton that reciprocates inside the compression chamber, and an oiling device for supplying the lubricating oil to an outer circumference of the piston. A first oil groove is concavely formed on the outer circumference of the piston, and a second oil groove is concavely formed on a side opposite to the compression chamber relative to the first oil groove. The second oil groove has a spatial volume same or greater than that of the first oil groove. An expanded clearance portion is provided such that a clearance between the piston and the cylindrical hole portion broadens from a top dead point to a bottom dead point.Type: GrantFiled: May 8, 2009Date of Patent: August 26, 2014Assignee: Panasonic CorporationInventors: Ko Inagaki, Akira Nakano, Yoshinori Ishida, Ichiro Morita
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Publication number: 20140234133Abstract: A sealed compressor of the present invention comprises an electric component (110); a compression component (112); a sealed container (102) which accommodates the electric component (110) and the compression component (112) and stores lubricating oil (104) therein; and a suction pipe (170) which is provided to penetrate a wall portion of the sealed container (102), and through which a refrigerant gas suctioned into the sealed container (102) flows; wherein the compression component (112) includes a compression chamber (142) formed within a cylinder (134) and a suction muffler (146) through which the refrigerant gas flows; wherein the suction muffler (146) includes a muffling space (150), an exit pipe (154), an inlet pipe (152), whose suction port (151) opens in a substantially horizontal direction in the interior of the sealed container (102), a funnel-shaped refrigerant receiver section (160) provided to surround the suction port (151); and wherein the suction port (151) is placed such that its center (151A)Type: ApplicationFiled: October 10, 2012Publication date: August 21, 2014Applicant: Panasonic CorporationInventors: Ko Inagaki, Terumasa Ide
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Patent number: 8794933Abstract: A hermetic compressor includes a closed vessel for storing lubricating oil, an electric-driving element, and a compressing element driven by the electric-driving element. The compressing element includes a cylinder block forming a compression chamber, a piton that reciprocates inside the compression chamber, and an oiling device for supplying the lubricating oil to an outer circumference of the piston. A first oil groove is concavely formed on the outer circumference of the piston, and a second oil groove is concavely formed on a side opposite to the compression chamber relative to the first oil groove. The second oil groove has a spatial volume same or greater than that of the first oil groove. An expanded clearance portion is provided such that a clearance between the piston and the cylindrical hole portion broadens from a top dead point to a bottom dead point.Type: GrantFiled: March 18, 2013Date of Patent: August 5, 2014Assignee: Panasonic CorporationInventors: Ko Inagaki, Akira Nakano, Yoshinori Ishida, Ichiro Morita
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Patent number: 8721304Abstract: A hermetic compressor includes a thrust ball bearing (176) on the thrust face (160) of the main bearing (126). The thrust ball bearing (176) includes balls (166) held in a holder (168), an upper race (164) and a lower race (170) arranged respectively on and beneath the balls (166), and an elastic support member (172) below the balls (166). The hermetic compressor is prevented from causing a load to be applied unevenly to the balls (166), thereby achieving high efficiency, low noise level, and high reliability.Type: GrantFiled: October 23, 2009Date of Patent: May 13, 2014Assignee: Panasonic CorporationInventors: Ko Inagaki, Yu Haraki, Hidenori Kobayashi, Tsuyoshi Matsumoto, Yasushi Hayashi
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Publication number: 20130230420Abstract: A hermetic compressor includes a closed vessel for storing lubricating oil, an electric-driving element, and a compressing element driven by the electric-driving element. The compressing element includes a cylinder block forming a compression chamber, a piton that reciprocates inside the compression chamber, and an oiling device for supplying the lubricating oil to an outer circumference of the piston. A first oil groove is concavely formed on the outer circumference of the piston, and a second oil groove is concavely formed on a side opposite to the compression chamber relative to the first oil groove. The second oil groove has a spatial volume same or greater than that of the first oil groove. An expanded clearance portion is provided such that a clearance between the piston and the cylindrical hole portion broadens from a top dead point to a bottom dead point.Type: ApplicationFiled: March 18, 2013Publication date: September 5, 2013Applicant: PANASONIC CORPORATIONInventors: Ko INAGAKI, Akira NAKANO, Yoshinori ISHIDA, Ichiro MORITA
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Patent number: 8517697Abstract: There is disclosed a sealed compressor in which a compressive component housed inside of a sealed container comprises a block, a suction valve, a piston, and a suction muffler, the suction muffler including a muffler body defining a muffler space and an outlet tube communicating the muffler space with the suction valve, the outlet tube having a bent portion bent in a middle portion between an opening exposed to the muffler space and an opening in a vicinity of the suction valve, a first outlet tube portion extending from the bent portion toward the muffler space, and a second outlet tube portion extending from the bent portion toward the suction valve, wherein a close sided space is formed in a vicinity of the bent portion, the close sided space having one end in communication with the outlet tube and the other end closed.Type: GrantFiled: February 9, 2010Date of Patent: August 27, 2013Assignee: Panasonic CorporationInventors: Kenji Kinjo, Ko Inagaki, Masakazu Yamaoka
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Patent number: 8323001Abstract: A compression element is provided with a block, a piston, a valve plate arranged in an opening end of a compression chamber and forming a suction hole, a suction valve, a suction muffler forming a sound absorbing space and provided with a communication pipe, and a cylinder head, the communication pipe has a suction muffler outlet portion communicated with the suction hole, is arranged in such a manner as to extend in a vertical direction with respect to a center line passing through the suction hole, and is arranged in such a manner that a part of the suction muffler outlet portion covers a part of the suction hole in the suction muffler outlet portion positioned in a downstream side of refrigerant gas flowing through the communication pipe, in the case of projection the suction muffler outlet portion in a direction of a center line.Type: GrantFiled: March 31, 2010Date of Patent: December 4, 2012Assignee: Panasonic CorporationInventors: Kenji Kinjo, Ko Inagaki
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Patent number: 8118568Abstract: A hermetic compressor has a hermetic container storing oil, and a compressing element accommodated in the hermetic container and compressing a refrigerant gas. The compressing element has a compression chamber, a cylinder forming the compression chamber, a piston inserted into the cylinder for reciprocation, and a suction muffler whose one end communicates with the compression chamber. The suction muffler has a sound deadening space, a gas flow forming part forming a gas flow flowing in a constant direction in the sound deadening space, and an oil discharge opening provided in a downstream side of the gas flow in a lower part of the sound deadening space. By this construction, there is realized a hermetic compressor in which the oil does not readily remain in the suction muffler, whose noise is lower, and whose performance is stabilized.Type: GrantFiled: December 6, 2005Date of Patent: February 21, 2012Assignee: Panasonic CorporationInventors: Ko Inagaki, Masanori Kobayashi, Terumasa Ide, Tomio Maruyama
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Publication number: 20120020817Abstract: Provided is a reciprocating compressor having a structure in which friction losses between a shaft and a bearing can be reduced without impairing the ability of the bearing to support the shaft. A reciprocating compressor (100) includes a cylinder (5), a piston (4), a connecting rod (6), a shaft (1), and a bearing (2). The shaft (1) has a journal portion (28) as a portion covered by the bearing (2). The journal portion (28) has a first journal portion (7) located closer to the connecting rod (6) with respect to a midpoint M of the journal portion (28) in a direction parallel to a rotational axis and a second journal portion (8) located farther from the connecting rod (6) with respect to the midpoint M. The bearing (2) has a first sliding portion (10) for supporting the first journal portion (7) and a second sliding portion (11) for supporting the second journal portion (8).Type: ApplicationFiled: March 24, 2009Publication date: January 26, 2012Applicant: PANASONIC CORPORATIONInventors: Yoko Sugamoto, Masaru Matsui, Fuminori Sakima, Ko Inagaki, Akira Nakano
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Publication number: 20110271709Abstract: There is disclosed a sealed compressor in which a compressive component housed inside of a sealed container comprises a block, a suction valve, a piston, and a suction muffler, the suction muffler including a muffler body defining a muffler space and an outlet tube communicating the muffler space with the suction valve, the outlet tube having a bent portion bent in a middle portion between an opening exposed to the muffler space and an opening in a vicinity of the suction valve, a first outlet tube portion extending from the bent portion toward the muffler space, and a second outlet tube portion extending from the bent portion toward the suction valve, wherein a close sided space is formed in a vicinity of the bent portion, the close sided space having one end in communication with the outlet tube and the other end closed.Type: ApplicationFiled: February 9, 2010Publication date: November 10, 2011Applicant: PANASONIC CORPORATIONInventors: Kenji Kinjo, Ko Inagaki, Masakazu Yamaoka
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Publication number: 20110200462Abstract: A hermetic compressor includes a thrust ball bearing (176) on the thrust face (160) of the main bearing (126). The thrust ball bearing (176) includes balls (166) held in a holder (168), an upper race (164) and a lower race (170) arranged respectively on and beneath the balls (166), and an elastic support member (172) below the balls (166). The hermetic compressor is prevented from causing a load to be applied unevenly to the balls (166), thereby achieving high efficiency, low noise level, and high reliability.Type: ApplicationFiled: October 23, 2009Publication date: August 18, 2011Applicant: Panasonic CorporationInventors: Ko Inagaki, Yu Haraki, Hidenori Kobayashi, Tsuyoshi Matsumoto, Yusushi Hayashi
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Publication number: 20110027111Abstract: A hermetic compressor includes a closed vessel for storing lubricating oil, an electric-driving element, and a compressing element driven by the electric-driving element. The compressing element includes a cylinder block forming a compression chamber, a piton that reciprocates inside the compression chamber, and an oiling device for supplying the lubricating oil to an outer circumference of the piston. A first oil groove is concavely formed on the outer circumference of the piston, and a second oil groove is concavely formed on a side opposite to the compression chamber relative to the first oil groove. The second oil groove has a spatial volume same or greater than that of the first oil groove. An expanded clearance portion is provided such that a clearance between the piston and the cylindrical hole portion broadens from a top dead point to a bottom dead point.Type: ApplicationFiled: May 8, 2009Publication date: February 3, 2011Applicant: Panasonic CorporationInventors: Ko Inagaki, Akira Nakano, Yoshinori Ishida, Ichiro Morita
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Publication number: 20100260621Abstract: A compression element is provided with a block, a piston, a valve plate arranged in an opening end of a compression chamber and forming a suction hole, a suction valve, a suction muffler forming a sound absorbing space and provided with a communication pipe, and a cylinder head, the communication pipe has a suction muffler outlet portion communicated with the suction hole, is arranged in such a manner as to extend in a vertical direction with respect to a center line passing through the suction hole, and is arranged in such a manner that a part of the suction muffler outlet portion covers a part of the suction hole in the suction muffler outlet portion positioned in a downstream side of refrigerant gas flowing through the communication pipe, in the case of projection the suction muffler outlet portion in a direction of a center line.Type: ApplicationFiled: March 31, 2010Publication date: October 14, 2010Applicant: PANASONIC CORPORATIONInventors: Kenji KINJO, Ko INAGAKI
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Patent number: 7614856Abstract: A linear motor of the present invention has: a stator having a stationary iron core and a magnet wire; a mover having a moving iron core and a magnet; and a plate-shaped elastic member for supporting the mover in a manner to rock in the rocking directions. This construction eliminates a sliding portion for supporting the mover so that it can reduce the loss, which might otherwise accompany the reciprocation of the mover. Moreover, a linear compressor using this linear motor is high in efficiency and reliability.Type: GrantFiled: June 13, 2005Date of Patent: November 10, 2009Assignee: Panasonic CorporationInventors: Ko Inagaki, Ichiro Morita
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Publication number: 20080247886Abstract: A hermetic compressor has a hermetic container storing an oil, and a compressing element accommodated in the hermetic container and compressing a refrigerant gas; the compressing element has a compressing chamber, a cylinder forming the compressing chamber, a piston inserted into the cylinder and reciprocating, and a suction muffler (140) whose one end communicates with the compressing chamber; and the suction muffler (140) has a sound deadening space (142), a gas flow forming part (144) forming a gas flow (143) flowing in a constant direction in the sound deadening space (142), and an oil discharged opening (146) provided in a downstream side of the gas flow (143) in a lower part of the sound deadening space (142). By this constitution, there is realized the hermetic compressor in which the oil is more difficult to remain in the suction muffler (140), whose noise is lower, and whose performance is stabilized.Type: ApplicationFiled: December 6, 2005Publication date: October 9, 2008Inventors: Ko Inagaki, Masanori Kobayashi, Terumasa Ide, Tomio Maruyama
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Publication number: 20070059189Abstract: This relates to a hermetic compressor and a manufacturing method of a suction muffler, and discloses a technique for making energy efficiency higher and reducing noise. According to that technique, in a suction muffler 140 having a sound attenuation space 143, by foam-molding a wall 147, such as an opposite surface and the like, where open ends 145a, 146a within the sound attenuation space among the walls constituting a casing 140C of the suction muffler 140 are opened, it is possible to reduce the heating action of refrigerant gas released into the sound attenuation space 143 effectively in a space-saving manner, and make a sucking efficiency higher, and effectively absorb a refrigerant pulsation tone radiated in the open end 145a within the sound attenuation space, and consequently reduce the noise.Type: ApplicationFiled: October 8, 2004Publication date: March 15, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Akira Nakano, Ko Inagaki
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Patent number: 7078832Abstract: A linear motor of the present invention has: a stator having a stationary iron core and a magnet wire; a mover having a moving iron core and a magnet; and a plate-shaped elastic member for supporting the mover in a manner to rock in the rocking directions. This construction eliminates a sliding portion for supporting the mover so that it can reduce the loss, which might otherwise accompany the reciprocation of the mover. Moreover, a linear compressor using this linear motor is high in efficiency and reliability.Type: GrantFiled: October 15, 2003Date of Patent: July 18, 2006Assignee: Matsushita Refrigeration CompanyInventors: Ko Inagaki, Ichiro Morita
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Publication number: 20060039803Abstract: A compressing unit of a hermetic compressor includes a suction valve placed at an opening of a compressing room and a suction muffler. The muffler includes a suction muffler body which forms a sound-deadening space, a first communicating path which communicates with the suction valve and with the sound-deadening space, and a second communicating path which communicates with a hermetic container and with the sound-deadening space. An opening, situated in the sound-deadening space, of the first communicating path, and an opening, situated in the sound-deadening space, of the second communicating path are both open in the same direction. In addition, a sound-insulating wall is disposed on the wall of the muffler body at a place at least confronting both of the openings. This structure achieves low noise and high efficiency.Type: ApplicationFiled: July 27, 2004Publication date: February 23, 2006Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTDInventors: Akira Nakano, Ko Inagaki, Yoshinori Ishida, Shuhei Sugimoto