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公开(公告)号：US10233930B2
公开(公告)日：2019-03-19
申请号：US16003991
申请日：2018-06-08
Inventor： Hiroaki Nakai , Hirofumi Yoshida , Shingo Oyagi , Yu Shiotani , Tsuyoshi Karino
Abstract: A rotary compressor having two cylinders includes crankshaft having first eccentric portion and second eccentric portion connected to each other by connecting portion. The rotary compressor further includes two compressive elements that compress working fluid in cylinder as first piston inserted over first eccentric portion eccentrically rotates in accordance with rotation of crankshaft. Further, first piston inserted over first eccentric portion undergoes assembly by being inserted over first eccentric portion through second eccentric portion. Further, a releasing portion is provided at each of outer diameter portions of first eccentric portion and second eccentric portion.
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公开(公告)号：US10151514B2
公开(公告)日：2018-12-11
申请号：US15309567
申请日：2015-04-27
Inventor： Akira Fujitaka , Fuminori Sakima , Yoshikazu Kawabe , Atsushi Sakuda , Hiroaki Nakai , Shigehiro Sato , Kenji Takaichi
IPC: F25B1/04 , C09K5/04 , C10M171/00 , F04C18/02 , F04C29/00 , F04C29/02 , F04C29/12 , F25B31/00 , F04C23/00 , F04C27/00 , F04C28/26
Abstract: A compressor uses a refrigerant containing R1123 (1,1,2-trifluoroethylene) as a working fluid, and uses a polyol ester oil as a compressor lubricating oil. In addition, a fixed scroll and a revolving scroll each having a spiral lap rising from an end plate, and a compression chamber which is formed by meshing the fixed scroll and the revolving scroll, are provided. In addition, a discharge hole which is provided at a center position of the end plate of the fixed scroll, and is open to a discharge chamber, a bypass hole which is provided in the end plate of the fixed scroll, and communicates with the compression chamber and the discharge chamber at a timing different from a timing at which the compression chamber communicates with the discharge hole, and a check valve which is provided in the bypass hole, and allows a flow from the compression chamber side to the discharge chamber side.
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公开(公告)号：US09512841B2
公开(公告)日：2016-12-06
申请号：US14358996
申请日：2012-11-14
Inventor： Takeshi Ogata , Yu Shiotani , Takumi Hikichi , Kentaro Shii , Tadayoshi Shoyama , Masanobu Wada , Hiroshi Hasegawa , Hirofumi Yoshida , Hiroaki Nakai , Akira Hiwata , Daisuke Funakosi , Ryuichi Ohno , Tsuyoshi Karino
IPC: F03C2/00 , F03C4/00 , F04C2/00 , F04C29/04 , F04C29/02 , F04C18/356 , F01C21/10 , F04C29/12 , F04C23/00
CPC classification number: F04C29/04 , F01C21/10 , F04C18/356 , F04C23/001 , F04C23/008 , F04C29/028 , F04C29/126 , F04C2240/50 , F04C2240/809
Abstract: A rotary compressor (100) includes a closed casing (1), a cylinder (15), a piston (28), a lower bearing member (72), a vane (33), a suction port (20), a discharge port (41), and a partition member (64). The partition member (64) is attached to the lower bearing member (72) so as to form a space enclosed by the partition member (64) and the lower bearing member (72) at a position adjacent to the lower bearing member (72). A portion of an oil stored in the oil reservoir (22) flows into the enclosed space, and thereby an oil retaining portion (53) is formed. The oil retaining portion (53) is located on the same side as the suction port (20) with respect to a reference plane (H1).
Abstract translation: 一种旋转式压缩机（100）包括一个封闭的壳体（1），一个气缸（15），一个活塞（28），一个下轴承件（72），一个叶片（33），一个吸入口（20） （41）和分隔构件（64）。 分隔构件64被安装在下轴承构件72上，以便在与下轴承构件72相邻的位置处形成由分隔构件64和下轴承构件72包围的空间。 。 存储在贮油器（22）中的油的一部分流入封闭空间，从而形成油保持部（53）。 油保持部53相对于基准面（H1）位于与吸入口20相同的一侧。
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公开(公告)号：US10591188B2
公开(公告)日：2020-03-17
申请号：US15309977
申请日：2015-05-08
Inventor： Fuminori Sakima , Akira Fujitaka , Shigehiro Sato , Kenji Takaichi , Yoshikazu Kawabe , Hiroaki Nakai
Abstract: A refrigeration cycle device includes a refrigeration cycle formed by connecting a compressor, a condenser, an expansion valve and an evaporator to each other. As a refrigerant in the refrigeration cycle, a working fluid containing 1,1,2-trifluoroethylene (R1123) and difluoromethane (R32) is used. A degree of opening of the expansion valve is controlled such that the refrigerant has two phases at a suction portion of the compressor.
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公开(公告)号：US10233929B2
公开(公告)日：2019-03-19
申请号：US15118857
申请日：2015-06-08
Inventor： Hiroaki Nakai , Hirofumi Yoshida , Shingo Oyagi , Yu Shiotani , Tsuyoshi Karino
Abstract: A rotary compressor having two cylinders includes crankshaft having first eccentric portion and second eccentric portion connected to each other by connecting portion. The rotary compressor further includes two compressive elements that compress working fluid in cylinder as first piston inserted over first eccentric portion eccentrically rotates in accordance with rotation of crankshaft. Further, first piston inserted over first eccentric portion undergoes assembly by being inserted over first eccentric portion through second eccentric portion. Further, a releasing portion is provided at each of outer diameter portions of first eccentric portion and second eccentric portion.
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Patent Agency Ranking
公开(公告)号：US11098715B2
公开(公告)日：2021-08-24
申请号：US16463261
申请日：2017-10-12
Inventor： Hiroaki Nakai , Atsushi Sakuda
Abstract: In an asymmetrical scroll compressor, at least one injection port through which an intermediate-pressure refrigerant is injected into a first compression chamber and a second compression chamber, at least one injection port penetrating an end plate of a fixed scroll at a position where the injection port is open to the first compression chamber or the second compression chamber during a compression stroke after a suction refrigerant is introduced and closed. Further, the amount of a refrigerant injected from an injection port into the first compression chamber is made more than the amount of a refrigerant injected from the injection port into the second compression chamber.
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公开(公告)号：US10590934B2
公开(公告)日：2020-03-17
申请号：US15567558
申请日：2016-06-07
Inventor： Fuminori Sakima , Akira Fujitaka , Hiroaki Nakai , Akihiro Kyogoku , Hideaki Matsuo , Shigehiro Sato , Kenji Takaichi
Abstract: The present invention includes a refrigeration cycle circuit that includes compressor, indoor heat exchanger, expansion valve, and outdoor heat exchanger that are connected to each other. A working fluid containing R1123 (1,1,2-trifluoroethylene) and R32 (difluoromethane) is used as a refrigerant sealed in the refrigeration cycle circuit, and an electric motor driving device that drives an electric motor of compressor includes a rotational speed estimator. The rotational speed estimator estimates rotational speed based on information on a detection value of an electric current input to the electric motor or a magnetic pole position of a rotor that constitutes the electric motor.
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公开(公告)号：US10215451B2
公开(公告)日：2019-02-26
申请号：US15309567
申请日：2015-04-27
Inventor： Akira Fujitaka , Fuminori Sakima , Yoshikazu Kawabe , Atsushi Sakuda , Hiroaki Nakai , Shigehiro Sato , Kenji Takaichi
IPC: F25B1/04 , C09K5/04 , C10M171/00 , F04C18/02 , F04C29/00 , F04C29/02 , F04C29/12 , F25B31/00 , F04C23/00 , F04C27/00 , F04C28/26
Abstract: A compressor uses a refrigerant containing R1123 (1,1,2-trifluoroethylene) as a working fluid, and uses a polyol ester oil as a compressor lubricating oil. In addition, a fixed scroll and a revolving scroll each having a spiral lap rising from an end plate, and a compression chamber which is formed by meshing the fixed scroll and the revolving scroll, are provided. In addition, a discharge hole which is provided at a center position of the end plate of the fixed scroll, and is open to a discharge chamber, a bypass hole which is provided in the end plate of the fixed scroll, and communicates with the compression chamber and the discharge chamber at a timing different from a timing at which the compression chamber communicates with the discharge hole, and a check valve which is provided in the bypass hole, and allows a flow from the compression chamber side to the discharge chamber side.
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公开(公告)号：US09568004B2
公开(公告)日：2017-02-14
申请号：US14358969
申请日：2012-11-14
Inventor： Takeshi Ogata , Yu Shiotani , Takumi Hikichi , Kentaro Shii , Tadayoshi Shoyama , Masanobu Wada , Hiroshi Hasegawa , Hirofumi Yoshida , Hiroaki Nakai , Akira Hiwata , Daisuke Funakosi , Ryuichi Ohno , Tsuyoshi Karino
IPC: F01C1/063 , F04C18/063 , F16N13/00 , F01C21/18 , F04C15/06 , F04C29/12 , F04C29/04 , F04C29/02 , F04C18/356 , F04C18/02 , F04C23/00
CPC classification number: F04C29/04 , F04C18/0215 , F04C18/3564 , F04C23/001 , F04C23/008 , F04C29/026 , F04C2240/809
Abstract: A rotary compressor (100) includes a closed casing (1), a cylinder (15), a piston (28), a lower bearing member (7), a vane (33), a suction port (20), a discharge port (41), and a partition member (10). The partition member (10) is attached to the lower bearing member (7) so as to form a refrigerant discharge space (52) serving as a flow path of a refrigerant discharged from a discharge chamber (26b) through the discharge port (41). The lower bearing member (7) is provided with a first recess (7t) on the same side as the suction port (20) with respect to a reference plane, the reference plane being a plane including a central axis of the cylinder (15) and a center of the vane (33) when the vane (33) protrudes maximally toward the central axis of the cylinder (15). A portion of oil stored in an oil reservoir (22) flows into the first recess (7t), and thereby an oil retaining portion (53) is formed.
Abstract translation: 旋转式压缩机（100）包括封闭壳体（1），气缸（15），活塞（28），下支承构件（7），叶片（33），吸入口（20） （41）和分隔构件（10）。 分隔构件（10）安装在下支承构件（7）上，形成作为从排出室（26b）经排出口（41）排出的制冷剂的流路的制冷剂排出空间（52） 。 下轴承构件（7）在相对于参考平面与吸入口（20）相同的一侧设置有第一凹部（7t），该参考平面是包括气缸（15）的中心轴线的平面， 以及当所述叶片（33）朝向所述气缸（15）的中心轴线最大突出时所述叶片（33）的中心。 存储在储油器（22）中的油的一部分流入第一凹部（7t），从而形成油保持部（53）。
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10.发明授权公开(公告)号：US09482231B2
公开(公告)日：2016-11-01
申请号：US14410951
申请日：2013-10-22
Inventor： Shingo Oyagi , Hirofumi Yoshida , Hiroaki Nakai , Yu Shiotani , Ryuichi Ohno , Tsuyoshi Karino
IPC: F03C2/00 , F03C4/00 , F04C2/00 , F04C15/00 , F04C29/02 , F04C18/32 , F04C27/00 , F04B39/02 , F04C29/00 , F04C18/356 , F04C23/00
CPC classification number: F04C29/02 , F04B39/02 , F04C18/322 , F04C18/3564 , F04C23/008 , F04C27/001 , F04C29/00 , F04C29/028 , F04C2210/268 , F04C2240/50
Abstract: A compression element includes a substantially spiral oil groove which is provided in inner peripheral surfaces of bearings and of the shaft. One end of the oil groove opens at a bearing base portion, and the other end of the oil groove opens at a bearing end. According to this configuration, oil in a gap between the shaft and inner peripheries of the bearings and forcibly discharges, into the hermetic container, gas bubbles generated in a sliding gap between the shaft and the bearings and by action of a viscosity pump generated by the substantially spiral oil groove, and it is possible to provide a rotary compressor capable of preventing seizing and wearing caused by gas-involvement at a bearing sliding portion, and capable of securing reliability when refrigerant including R32 is used.
Abstract translation: 压缩元件包括设置在轴承和轴的内周面中的大致螺旋形的油槽。 油槽的一端在轴承基部开口，油槽的另一端在轴承端开口。 根据该结构，轴与轴承的内周之间的间隙中的油被强制地排出到密封容器中，在轴与轴承之间的滑动间隙中产生的气泡和由 基本上是螺旋形的油槽，并且可以提供一种旋转式压缩机，能够防止在轴承滑动部分引起气体的咬合和磨损，并且能够在使用含有R32的制冷剂时确保可靠性。
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