Patents by Inventor Masaji Yamanaka
Masaji Yamanaka 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: 20060117789Abstract: An object is to improve an assembly operability while enhancing disconnecting and connecting properties between a main body and a refrigerating unit of a refrigerating device, and there is disclosed a refrigerating device (showcase) which is provided with a refrigerating unit including a refrigerant circuit constituted of a compressor, a radiator as a high-pressure-side heat exchanger, an evaporator as a low-pressure-side heat exchanger and the like and which supplies, by a blower, cold air subjected to heat exchange with the evaporator to a storage chamber as a space to be cooled constituted in a main body by a blower to cool the chamber, wherein a mechanical chamber is constituted under a bottom surface of the main body, the compressor and the radiator are installed on a unit base on the bottom surface of the mechanical chamber, and a refrigerating box in which the evaporator and the blower are stored is attached to the bottom surface of the main body via hooks so as to communicate with the storage chamber.Type: ApplicationFiled: December 2, 2005Publication date: June 8, 2006Applicant: SANYO ELECTRIC CO., LTD.Inventors: Haruhisa Yamasaki, Masaji Yamanaka
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Patent number: 7051551Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: GrantFiled: March 2, 2005Date of Patent: May 30, 2006Assignee: SANYO Electric Co., Ltd.Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Patent number: 7040116Abstract: An object is to improve cooling efficiency while preventing an abnormal increase in pressure of a high side in a cooling apparatus which uses so-called carbon dioxide as a refrigerant. The cooling apparatus comprises a refrigerant circuit in which a compressor, a gas cooler, pressure reducing means, an evaporator and the like are connected in an annular shape, and carbon dioxide is sealed as a refrigerant. In a stable running state in which a temperature of a space to be cooled by the evaporator is cool, time after a start of the compressor until a difference between outlet and inlet temperatures of the evaporator becomes within 1 degree is 5 minutes or more to less than 20 minutes.Type: GrantFiled: June 2, 2004Date of Patent: May 9, 2006Assignee: Sanyo Electric Co., Ltd.Inventors: Haruhisa Yamasaki, Kenzo Matsumoto, Shigeya Ishigaki, Masaji Yamanaka, Kentaro Yamaguchi
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Patent number: 7013664Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: GrantFiled: March 2, 2005Date of Patent: March 21, 2006Assignee: SANYO Electric Co., Ltd.Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Patent number: 7013672Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: GrantFiled: March 2, 2005Date of Patent: March 21, 2006Assignee: SANYO Electric Co., Ltd.Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Patent number: 7000424Abstract: A refrigerant cycling device is provided. The refrigerant cycling device comprises a compressor, an intermediate cooling circuit and a three-way valve device. The compressor is connected to a heat exchanger and a depressurizing means, for performing a cooling operation and a heating operation. The compressor further comprises a first and a second rotary compression elements within a sealed container, and a refrigerant that is compressed and discharged by the first rotary compression element is introduced to the second rotary compression element. The intermediate cooling circuit is used for radiating heat of the refrigerant discharged from the first rotary compression element. The three-way valve device for opening a passage of the intermediate cooling circuit during the cooling operation. In this way, the coefficient of production (COP) during the cooling operation can be improved.Type: GrantFiled: October 9, 2003Date of Patent: February 21, 2006Assignee: Sanyo Electric Co., Ltd.Inventors: Kenzo Matsumoto, Masaji Yamanaka, Haruhisa Yamasaki, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Akifumi Tomiuka
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Publication number: 20050217296Abstract: A refrigerant system 1D comprises a heat insulating housing 3 provided with an accommodating space inside and a refrigeration unit 9 attached to a lower portion of the heat insulating housing 3, in which a compressor 5, a gas cooler 6, an internal heat exchanger 10, a restriction means 16 and an evaporator 8 accommodated in a heat insulating case 7A are disposed on a unit base 4. The gas cooler 6 and the heat insulating case 7A are disposed so that air heat-exchanged by the gas cooler 6 moves toward the heat insulating case 7A, an air passage T is provided between the unit base 4 and the heat insulating case 7A, the air heat-exchanged by the gas cooler 6 is passed through the air passage T to be discharged outside, and the internal heat exchanger 10 is disposed in such a manner that it is embedded in a heat insulating material layer 7C provided around the heat insulating case 7A to be provided with a heat insulation property.Type: ApplicationFiled: February 8, 2005Publication date: October 6, 2005Inventors: Masaji Yamanaka, Shigeya Ishigaki, Kenzo Matsumoto, Haruhisa Yamasaki, Midori Futakawame
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Patent number: 6945073Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: GrantFiled: August 26, 2003Date of Patent: September 20, 2005Assignee: Sanyo Electric Co., Ltd.Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Publication number: 20050183447Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: ApplicationFiled: March 2, 2005Publication date: August 25, 2005Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Patent number: 6931866Abstract: A multi-stage compression type rotary compressor, having a driving element and a first and a second rotary compression element that are driven by the driving element in a sealed container, is provided. The refrigerant compressed by the first rotary compression element is discharged into the sealed container, and said discharged refrigerant with an intermediate pressure is then compressed by the second rotary compression element. By cooling the refrigerant absorbed into the second rotary compression element, the rise in the temperature of the refrigerant that is compressed and discharged by the second rotary compression element can be suppressed. And, the supercooling degree of the refrigerant is increases before reaching the expansion valve to improve the cooling ability of the evaporator.Type: GrantFiled: December 8, 2004Date of Patent: August 23, 2005Assignee: SANYO Electric Co., Ltd.Inventors: Kazuya Sato, Kenzo Matsumoto, Haruhisa Yamasaki, Akifumi Tomiuka, Kazuaki Fujiwara, Kentaro Yamaguchi, Masaji Yamanaka
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Publication number: 20050178151Abstract: For a purpose of preventing a compressor from being damaged by liquid compression without disposing any accumulator on a low-pressure side, there is disclosed a transition critical refrigerant cycle apparatus having a supercritical pressure on a high-pressure side. The transition critical refrigerant cycle apparatus constituted by connecting a compressor, a gas cooler, a pressure reducing device, an evaporator and the like in an annular shape, using carbon dioxide as a refrigerant, and capable of having the supercritical pressure on the high-pressure side comprises: an internal heat exchanger for exchanging heat between a refrigerant which has flown out of the gas cooler and a refrigerant which has flown out of the evaporator.Type: ApplicationFiled: February 10, 2005Publication date: August 18, 2005Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kenzo Matsumoto, Haruhisa Yamasaki, Masaji Yamanaka
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Publication number: 20050172661Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: ApplicationFiled: March 2, 2005Publication date: August 11, 2005Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Publication number: 20050172662Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: ApplicationFiled: March 2, 2005Publication date: August 11, 2005Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Publication number: 20050144973Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: ApplicationFiled: March 2, 2005Publication date: July 7, 2005Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Publication number: 20050144964Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: ApplicationFiled: March 2, 2005Publication date: July 7, 2005Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Publication number: 20050144972Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: ApplicationFiled: March 2, 2005Publication date: July 7, 2005Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Publication number: 20050144977Abstract: A refrigerant cycling device is provided, wherein a compressor comprises an electric motor element, a first and a second rotary compression elements in a sealed container. The first and the second rotary compression elements are driven by the electric motor element. The refrigerant compressed and discharged by the first rotary compression element is compressed by absorbing into the second rotary compression element, and is discharged to the gas cooler.Type: ApplicationFiled: March 2, 2005Publication date: July 7, 2005Inventors: Kenzo Matsumoto, Kazuya Sato, Kentaro Yamaguchi, Kazuaki Fujiwara, Masaji Yamanaka, Haruhisa Yamasaki
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Patent number: 6907746Abstract: A multi-stage compression type rotary compressor, having a driving element and a first and a second rotary compression element that are driven by the driving element in a sealed container, is provided. The refrigerant compressed by the first rotary compression element is discharged into the sealed container, and said discharged refrigerant with an intermediate pressure is then compressed by the second rotary compression element. By cooling the refrigerant absorbed into the second rotary compression element, the rise in the temperature of the refrigerant that is compressed and discharged by the second rotary compression element can be suppressed. And, the supercooling degree of the refrigerant is increases before reaching the expansion valve to improve the cooling ability of the evaporator.Type: GrantFiled: November 6, 2003Date of Patent: June 21, 2005Assignee: Sanyo Electric Co., Ltd.Inventors: Kazuya Sato, Kenzo Matsumoto, Haruhisa Yamasaki, Akifumi Tomiuka, Kazuaki Fujiwara, Kentaro Yamaguchi, Masaji Yamanaka
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Patent number: 6893237Abstract: There is provided a horizontal rotary compressor capable of improving performance thereof while an oil supply means smoothly supplies oil. A part of a hermetic shell case at the upper side is partitioned by a baffle into an electric element side and an oil pump side, a refrigerant which is drawn from an outside of the hermetic shell case is compressed by a first rotary compression element and a second rotary compression element and discharged toward the electric element side of the baffle, then it is further discharged from oil pump side toward the outside of the hermetic shell case. The baffle closes a flow path area of the refrigerant over an oil level inside the hermetic shell case at a ratio ranging from not less than 50% to not more than 80% during the stoppage of the horizontal rotary compressor.Type: GrantFiled: March 14, 2003Date of Patent: May 17, 2005Assignee: Sanyo Electric Co., Ltd.Inventors: Masaji Yamanaka, Etsuo Toriyama, Manabu Takenaka, Yoshihisa Kogure
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Publication number: 20050089413Abstract: A multi-stage compression type rotary compressor, having a driving element and a first and a second rotary compression element that are driven by the driving element in a sealed container, is provided. The refrigerant compressed by the first rotary compression element is discharged into the sealed container, and said discharged refrigerant with an intermediate pressure is then compressed by the second rotary compression element. By cooling the refrigerant absorbed into the second rotary compression element, the rise in the temperature of the refrigerant that is compressed and discharged by the second rotary compression element can be suppressed. And, the supercooling degree of the refrigerant is increases before reaching the expansion valve to improve the cooling ability of the evaporator.Type: ApplicationFiled: December 8, 2004Publication date: April 28, 2005Inventors: Kazuya Sato, Kenzo Matsumoto, Haruhisa Yamasaki, Akifumi Tomiuka, Kazuaki Fujiwara, Kentaro Yamaguchi, Masaji Yamanaka