Patents by Inventor Hideaki Inazawa
Hideaki Inazawa 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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Patent number: 11873935Abstract: A double pipe forms an inner flow path, through which a low-pressure side refrigerant flows, inside an inner pipe, and forms an inner-outer flow path, through which a high-pressure side refrigerant flows, between the outer pipe and the inner pipe. It comprises an expansion valve side connector and a counter-expansion valve side connector which are interposed between distal ends of the outer pipe and the inner pipe and members to be connected. An outer diameter of the outer pipe is 30 millimeters or less. A ratio of a difference between an inner diameter of the outer pipe and an outer diameter of the inner pipe with respect to the inner diameter of the outer pipe is 25% or less. A sealing member is provided to prevent a refrigerant leakage. The plurality of members are mechanically fixed.Type: GrantFiled: February 19, 2021Date of Patent: January 16, 2024Assignees: DENSO AIR SYSTEMS CORPORATION, DENSO CORPORATIONInventors: Fumiaki Nakamura, Minoru Maruyama, Hideaki Inazawa, Masao Mutai, Kouichi Satou, Nobumichi Harada
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Publication number: 20210172684Abstract: A double pipe forms an inner flow path, through which a low-pressure side refrigerant flows, inside an inner pipe, and forms an inner-outer flow path, through which a high-pressure side refrigerant flows, between the outer pipe and the inner pipe. It comprises an expansion valve side connector and a counter-expansion valve side connector which are interposed between distal ends of the outer pipe and the inner pipe and members to be connected. An outer diameter of the outer pipe is 30 millimeters or less. A ratio of a difference between an inner diameter of the outer pipe and an outer diameter of the inner pipe with respect to the inner diameter of the outer pipe is 25% or less. A sealing member is provided to prevent a refrigerant leakage. The plurality of members are mechanically fixed.Type: ApplicationFiled: February 19, 2021Publication date: June 10, 2021Inventors: Fumiaki NAKAMURA, Minoru MARUYAMA, Hideaki INAZAWA, Masao MUTAI, Kouichi SATOU, Nobumichi HARADA
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Patent number: 6557722Abstract: In a case connection structure for connecting connection end portions of both case members, a boss portion is formed in one of the connection end portions to protrude to the other one of the connection end portions, and a recess portion into which the boss portion is fitted is formed in the other one of the connection end portions. A slit is provided in the boss portion, and a press-fitting portion is provided in the recess portion to be press-fitted into the slit. While the boss portion is fitted into the recess portion, the press-fitting portion is press-fitted into the slit to expand the boss portion to an outer side, so that an outer surface of the boss portion press-contacts the recess portion.Type: GrantFiled: November 28, 2001Date of Patent: May 6, 2003Assignee: Denso CorporationInventors: Yoshihisa Ueno, Masaei Mitomi, Hideaki Inazawa
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Publication number: 20020070216Abstract: In a case connection structure for connecting connection end portions of both case members, a boss portion is formed in one of the connection end portions to protrude to the other one of the connection end portions, and a recess portion into which the boss portion is fitted is formed in the other one of the connection end portions. A slit is provided in the boss portion, and a press-fitting portion is provided in the recess portion to be press-fitted into the slit. While the boss portion is fitted into the recess portion, the press-fitting portion is press-fitted into the slit to expand the boss portion to an outer side, so that an outer surface of the boss portion press-contacts the recess portion.Type: ApplicationFiled: November 28, 2001Publication date: June 13, 2002Inventors: Yoshihisa Ueno, Masaei Mitomi, Hideaki Inazawa
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Patent number: 6352102Abstract: According to the present invention, in an air conditioning apparatus setting a double laminar mode in which inside air and outside air are blown while being partitioned, when the maximum heating state (including the high heating capacity close to the maximum heating operation) is set, a warm air bypass door for introducing warm air directly into a foot opening portion, without being mixed into cool air, functions as a movable partition member for partitioning an air passage at a downstream side of a heating heat exchanger, into an inside air passage and an outside air passage. In this way, it is possible to downsize the air conditioning unit.Type: GrantFiled: October 6, 1997Date of Patent: March 5, 2002Assignee: Denso CorporationInventors: Tetsuya Takechi, Toshihiko Muraki, Manabu Miyata, Hideaki Inazawa, Yasuhiro Sato, Koji Takahashi
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Patent number: 6142864Abstract: A blower unit includes a centrifugal fan, a fan casing forming a scroll-shaped air passage and accommodating the centrifugal fan, and a partition wall for partitioning an interior of the fan casing into first and second air passages in which different kinds of airs flow, respectively, in the axial direction. The partition wall is molded integrally to the fan casing so as to extend linearly from the inner wall surface of the fan casing toward a radial inside of the fan. The fan casing includes two divided cases having a divided face in the axial direction. In this way, the number of divided cases can be as well as the number of steps of assembling the fan casing can be reduced so that the work efficiency for assembling the fan casing is improved.Type: GrantFiled: June 25, 1997Date of Patent: November 7, 2000Assignee: DENSO CorporationInventors: Yukio Uemura, Kenji Suwa, Kazushi Shikata, Hiroshi Nonoyama, Hikaru Sugi, Koji Takahashi, Hideaki Inazawa, Yasuhiro Sato, Tetsuya Takechi, Manabu Miyata
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Patent number: 6110035Abstract: According to the present invention, a blower unit includes a centrifugal fan, a fan casing forming a scroll-shaped air passage and accommodating the centrifugal fan, and a partition wall for partitioning an interior of the fan casing into first and second air passages in which different kinds of airs flow, respectively, in the axial direction. The partition wall is molded integrally to the fan casing so as to extend linearly from the inner wall surface of the fan casing toward a radial inside of the fan. The fan casing includes two divided cases having a divided face in the axial direction. In this way, the number of divided cases can be as well as the number of steps of assembling the fan casing can be reduced so that the work efficiency for assembling the fan casing is improved.Type: GrantFiled: October 12, 1999Date of Patent: August 29, 2000Assignee: Denso CorporationInventors: Yukio Uemura, Kenji Suwa, Kazushi Shikata, Hiroshi Nonoyama, Hikaru Sugi, Koji Takahashi, Hideaki Inazawa, Yasuhiro Sato, Tetsuya Takechi, Manabu Miyata
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Patent number: 6016967Abstract: According to the present invention, in an air conditioning apparatus setting a double laminar mode in which an inside air and an outside air are blown while being partitioned, when the maximum heating state is set during an air outlet mode in which air is blown out simultaneously from both of a foot opening portion toward feet of a passenger and a defroster opening portion toward a windshield, a passage for conditioned air is partitioned into a first air passage for the inside air and a second air passage for the outside air. The first air passage is communicated with the foot opening portion, and the second air passage is communicated with the defroster opening portion.Type: GrantFiled: October 6, 1997Date of Patent: January 25, 2000Assignee: Denso CorporationInventors: Tetsuya Takechi, Koji Takahashi, Hideaki Inazawa, Yasuhiro Sato, Tatsuo Tsunooka, Toshiaki Nomura