Patents by Inventor Yoshihide Ogawa
Yoshihide Ogawa 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: 20020102175Abstract: A structure is provided that prevents excessive force from acting on a fastening portion where a guide frame is fastened to a sealed container. A fastening position of the guide frame and sealed structure is set within a range bounded by an upper meshing circumferential inner surface of the guide frame together with an upper meshing circumferential outer surface of a compliant frame and a lower meshing circumferential inner surface of the guide frame together with a lower meshing circumferential outer surface of the compliant frame.Type: ApplicationFiled: January 28, 2002Publication date: August 1, 2002Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Teruhiko Nishiki, Takeshi Fushiki, Kiyoharu Ikeda, Yoshihide Ogawa, Takashi Sebata, Fumiaki Sano
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Patent number: 6210130Abstract: A rotary compressor having a piston provided integrally with a blade is contained in a hermetic vessel which is operated at a suction pressure of the rotary compressor and not to discharge pressure. The rotary compressor includes a compression mechanism portion having a cylinder which includes a suction port formed in a cylinder chamber, a piston which eccentrically revolves in the cylinder, a blade which is integrally formed with the piston and partitions the cylinder chamber into a high pressure chamber and a low pressure chamber, and a driving shaft for revolving the piston.Type: GrantFiled: August 5, 1999Date of Patent: April 3, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masayuki Kakuda, Eiji Watanabe, Yoshihide Ogawa, Minoru Ishii, Masao Tani, Munehisa Gunjima, Takashi Yamamoto, Susumu Kawaguchi
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Patent number: 6135739Abstract: A scroll compressor comprising a fixed scroll, a rotating scroll, a compliant frame for supporting the rotating scroll in an axial direction and a main shaft for driving the rotating scroll in directions of radiuses of the rotating scroll, and a guide frame fixed to a hermetically sealed vessel for supporting the compliant frame in the directions of its radiuses, wherein the rotating scroll is slidable in the axial direction by sliding of the compliant frame on the guide frame; a space is formed between the compliant frame and the guide frame; and a pressure in the space is made to be a pressure higher than a suction pressure and the same as a discharge pressure or less, whereby relief of the rotating scroll is avoidable to quickly and constantly realize a state of normal operation.Type: GrantFiled: March 16, 1999Date of Patent: October 24, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Ogawa, Minoru Ishii, Kiyoharu Ikeda, Yasuhiro Suzuki, Takeshi Fushiki, Takashi Sebata, Susumu Kawaguchi, Yoshihide Ogawa, Wataru Izumisawa
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Patent number: 5863191Abstract: The invention concerns a scroll compressor which is low in noise caused by water hammering of a refrigerant gas just after a discharge valve is closed. The scroll compressor includes a discharge member (45) having a discharge port (8) opposed to a discharge port (5) of a fixed scroll (2) and a discharge valve (9) opposed to the discharge port (8) of the discharge member (45) and opened/closed depending on a difference between flow passage pressure of a refrigerant gas and pressure in a high pressure space (27) in a sealed vessel (1). At least either of the fixed scroll (2) and the discharge member (45) is formed with a muffler chamber communicated with the discharge port (5, 8) and having a diameter larger than a diameter of the discharge port (5) of the fixed scroll (2) for suppressing occurrence of an impulse wave caused by water hammering when the discharge valve (9) is closed. Noise caused by a pressure ripple of the discharge port lessens, quieting the operation of the scroll compressor.Type: GrantFiled: January 17, 1997Date of Patent: January 26, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shuji Motegi, Toshiyuki Nakamura, Fumiaki Sano, Masayuki Kakuda, Kiyoharu Ikeda, Yoshihide Ogawa, Eiji Watanabe, Shinji Nakashima
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Patent number: 5853288Abstract: The invention concerns a scroll compressor which is low in noise caused by water hammering of a refrigerant gas just after a discharge valve is closed. The scroll compressor includes a discharge member (45) having a discharge port (8) opposed to a discharge port (5) of a fixed scroll (2) and a discharge valve (9) opposed to the discharge port (8) of the discharge member (45) and opened/closed depending on a difference between flow passage pressure of a refrigerant gas and pressure in a high pressure space (27) in a sealed vessel (1). At least either of the fixed scroll (2) and the discharge member (45) is formed with a counterboring part which communicates with an intermediate pessure chamber after the and intermediate pressure chambers have begun to communicate via separation of the spiral teeth.Type: GrantFiled: May 16, 1997Date of Patent: December 29, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shuji Motegi, Toshiyuki Nakamura, Fumiaki Sano, Masayuki Kakuda, Kiyoharu Ikeda, Yoshihide Ogawa, Eiji Watanabe, Shinji Nakashima
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Patent number: 5846065Abstract: The invention concerns a high-reliability scroll compressor with little moment for making a fixed scroll unstable. A scroll compressor comprising in a sealed vessel a fixed scroll, an orbiting scroll being combined with the fixed scroll for forming a compression space, and executing orbiting motion with respect to the fixed scroll, a frame for axially supporting the orbiting scroll and radially supporting a drive shaft, and a seal member being disposed in an axial gap between a high and low pressure separator stuck to the frame by any method and the fixed scroll, wherein a base plate outer peripheral surface of the fixed scroll is radially supported by a stationary member coaxial with the base plate outer peripheral surface, and wherein with the stationary member as a guide, the fixed scroll can make axial movement within a range in which it interferes with the orbiting scroll downward in the axial direction and with the high and low pressure separator upward in the axial direction.Type: GrantFiled: June 25, 1997Date of Patent: December 8, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Fumiaki Sano, Masayuki Kakuda, Hiroshi Ogawa, Kiyoharu Ikeda, Yoshihide Ogawa, Eiji Watanabe, Toshiyuki Nakamura, Shuji Motegi, Norihide Kobayashi
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Patent number: 5800142Abstract: The invention concerns a scroll compressor which is low in noise caused by water hammering of a refrigerant gas just after a discharge valve is closed. The scroll compressor includes a discharge member (45) having a discharge port (8) opposed to a discharge port (5) of a fixed scroll (2) and a discharge valve (9) opposed to the discharge port (8) of the discharge member (45) and opened/closed depending on a difference between flow passage pressure of a refrigerant gas and pressure in a high pressure space (27) in a sealed vessel (1). At least either of the fixed scroll (2) and the discharge member (45) is formed with a counterboring part which communicates with an intermediate pressure chamber after the high and intermediate pressure chambers have begun to communicate via separation of the spiral teeth.Type: GrantFiled: June 21, 1996Date of Patent: September 1, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shuji Motegi, Toshiyuki Nakamura, Fumiaki Sano, Masayuki Kakuda, Kiyoharu Ikeda, Yoshihide Ogawa, Eiji Watanabe, Shinji Nakashima
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Patent number: 5743720Abstract: The invention concerns a high-reliability scroll compressor with little moment for making a fixed scroll unstable. A scroll compressor comprising in a sealed vessel a fixed scroll, an orbiting scroll being combined with the fixed scroll for forming a compression space, and executing orbiting motion with respect to the fixed scroll, a frame for axially supporting the orbiting scroll and radially supporting a drive shaft, and a seal member being disposed in an axial gap between a high and low pressure separator stuck to the frame by any method and the fixed scroll. A base plate outer peripheral surface of the fixed scroll is radially supported by a stationary member coaxial with the base plate outer peripheral surface, and with the stationary member as a guide. The fixed scroll can make axial movement within a range in which it interferes with the orbiting scroll downward in the axial direction and with the high and low pressure separator upward in the axial direction.Type: GrantFiled: July 21, 1995Date of Patent: April 28, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Fumiaki Sano, Masayuki Kakuda, Hiroshi Ogawa, Kiyoharu Ikeda, Yoshihide Ogawa, Eiji Watanabe, Toshiyuki Nakamura, Shuji Motegi, Norihide Kobayashi
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Patent number: 5674061Abstract: The invention concerns a scroll compressor which is low in noise caused by water hammering of a refrigerant gas just after a discharge valve is closed. The scroll compressor includes a discharge member (45) having a discharge port (8) opposed to a discharge port (5) of a fixed scroll (2) and a discharge valve (9) opposed to the discharge port (8) of the discharge member (45) and opened/closed depending on a difference between flow passage pressure of a refrigerant gas and pressure in a high pressure space (27) in a sealed vessel (1). At least either of the fixed scroll (2) and the discharge member (45) is formed with a muffler chamber communicated with the discharge port (5, 8) and having a diameter larger than a diameter of the discharge port (5) of the fixed scroll (2) for suppressing occurrence of an impulse wave caused by water hammering when the discharge valve (9) is closed. Noise caused by a pressure ripple of the discharge port lessens, quieting the operation of the scroll compressor.Type: GrantFiled: September 29, 1995Date of Patent: October 7, 1997Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shuji Motegi, Toshiyuki Nakamura, Fumiaki Sano, Masayuki Kakuda, Kiyoharu Ikeda, Yoshihide Ogawa, Eiji Watanabe, Shinji Nakashima
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Patent number: 5516267Abstract: A scroll compressor comprising a rotation constraining device for restricting the rotation of the orbital scroll toward the principal axis rotational direction and for extending the constraining range of the orbital scroll toward the principal axis reverse rotational direction, and a compression chamber torque forming device for causing a pressure in a first compression chamber to be larger than that in a second compression chamber when the pressure in the compression chambers rises up abnormally high. The first compression chamber is formed between the wrap member inside surface of the fixed scroll and the wrap member outside surface of the orbital scroll and the second compression chamber is formed between the wrap member outside surface of the fixed scroll and the wrap member inside surface of the orbital scroll.Type: GrantFiled: March 31, 1994Date of Patent: May 14, 1996Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kiyoharu Ikeda, Hiroshi Ogawa, Yoshihide Ogawa, Kazuyuki Akiyama, Fumiaki Sano