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1. 发明公开

EP3128175A1 COMPRESSOR 有权
标题翻译：压缩机
公开(公告)号：EP3128175A1
公开(公告)日：2017-02-08
申请号：EP15792238.6
申请日：2015-05-12
申请人： Daikin Industries, Ltd.
发明人： NISHIMURA, Kousuke , FURUSHO, Kazuhiro , OHKAWA, Takeyoshi
IPC分类号： F04C29/00 , C22C21/02
CPC分类号： F04C18/3564 , C22C21/02 , F04C18/322 , F04C23/008 , F04C2210/268 , F04C2230/41 , F04C2230/91 , F04C2230/92 , F04C2240/20 , F04C2240/30 , F05C2201/021
摘要： An object of the present invention is to enable a reduction in weight and improve reliability. A rotary compressor (101) has a cylinder (24), a piston (21), and a bushing (22). The cylinder (24) includes a cylinder hole (24a). The piston (21) moves relative to the cylinder (24) in the cylinder hole (24a). The bushing (22) slides against the cylinder (24) and the piston (21) in the cylinder hole (24a). The cylinder (24) and the piston (21) are formed from an Al-Si alloy having a Si content exceeding 12.6 wt%, which is a eutectic point. The bushing (22), which is formed from steel, has a surface layer including a sliding surface (22a) that slides against the cylinder (24) and the piston (21). The surface layer is reformed so as to have greater hardness than hardness of proeutectic Si contained in the Al-Si alloy. The surface layer also has hardness of at least Hv 1000 in the sliding surface.
摘要翻译：本发明的目的是减轻重量并提高可靠性。旋转式压缩机101具有气缸24，活塞21和衬套22。气缸（24）具有气缸孔（24a）。活塞（21）相对于缸孔（24a）中的缸体（24）移动。衬套（22）在缸孔（24a）中抵靠缸体（24）和活塞（21）滑动。汽缸（24）和活塞（21）由Si含量超过共晶点12.6wt％的Al-Si合金形成。由钢制成的衬套（22）具有包括滑动表面（22a）的表面层，该滑动表面相对于圆筒（24）和活塞（21）滑动。表面层被重整以具有比包含在Al-Si合金中的共晶Si的硬度大的硬度。表面层在滑动表面上也具有至少Hv 1000的硬度。

2. 发明授权

EP3128175B1 COMPRESSOR 有权
公开(公告)号：EP3128175B1
公开(公告)日：2018-12-12
申请号：EP15792238.6
申请日：2015-05-12
申请人： Daikin Industries, Ltd.
发明人： NISHIMURA, Kousuke , FURUSHO, Kazuhiro , OHKAWA, Takeyoshi
IPC分类号： F04C23/00 , F04C29/00 , C22C21/02 , F04C18/00 , C23C14/06 , C23C28/04 , F04C18/32 , F04C18/356
CPC分类号： F04C18/3564 , C22C21/02 , F04C18/322 , F04C23/008 , F04C2210/268 , F04C2230/41 , F04C2230/91 , F04C2230/92 , F04C2240/20 , F04C2240/30 , F05C2201/021
摘要： An object of the present invention is to enable a reduction in weight and improve reliability. A rotary compressor (101) has a cylinder (24), a piston (21), and a bushing (22). The cylinder (24) includes a cylinder hole (24a). The piston (21) moves relative to the cylinder (24) in the cylinder hole (24a). The bushing (22) slides against the cylinder (24) and the piston (21) in the cylinder hole (24a). The cylinder (24) and the piston (21) are formed from an Al-Si alloy having a Si content exceeding 12.6 wt%, which is a eutectic point. The bushing (22), which is formed from steel, has a surface layer including a sliding surface (22a) that slides against the cylinder (24) and the piston (21). The surface layer is reformed so as to have greater hardness than hardness of proeutectic Si contained in the Al-Si alloy. The surface layer also has hardness of at least Hv 1000 in the sliding surface.

3. 发明公开

EP3647596A1 ROTARY COMPRESSOR 有权
公开(公告)号：EP3647596A1
公开(公告)日：2020-05-06
申请号：EP18845099.3
申请日：2018-08-03
申请人： Daikin Industries, Ltd.
发明人： SOTOJIMA, Takazou , HIGASHI, Hirofumi , NISHIMURA, Kousuke
IPC分类号： F04C18/356 , F04C23/00 , F04C29/00
摘要： In the rotary compressor (1), the drive shaft (70) is configured such that it includes a lower eccentric portion (76), an auxiliary shaft portion (74), and a lower coupling portion (90) coupling them and satisfies R eL - e L S , wherein R eL is the radius of the lower eccentric portion (76), R s is the radius of the auxiliary shaft portion (74), and e L is the eccentricity of the lower eccentric portion (76). Further, the lower coupling portion (90) is formed such that its outer surface does not extend out of the outer surface of the lower eccentric portion (76), and it is provided with a reinforcement portion (92) with its outer surface positioned outside the outer surface of the auxiliary shaft portion (74) in the radial direction of the drive shaft (70).

4. 发明公开

EP4105502A1 THRUST GAS BEARING, CENTRIFUGAL COMPRESSOR EQUIPPED WITH SAME, AND REFRIGERATION DEVICE EQUIPPED WITH SAME 有权转让
公开(公告)号：EP4105502A1
公开(公告)日：2022-12-21
申请号：EP21781830.1
申请日：2021-02-26
申请人： Daikin Industries, Ltd.
发明人： LIU, Bichuan , TANAKA, Kouichi , NISHIMURA, Kousuke
IPC分类号： F16C27/02 , F16C37/00 , F16J15/40 , F04D29/056 , F04D29/58
摘要： A cooling flow path (67) includes a first flow path (61b) and a second flow path (62b). The first flow path (61b) is formed on one end side, in an axial direction, of the first base part (61) and extends from an axial center toward an outer periphery of the first base part (61). The second flow path (62b) is formed on the other end side, in the axial direction, of the second base part (62) and extends from an outer periphery toward an axial center of the second base part (62). The second flow path (62b) is located downstream of the first flow path (61b).

5. 发明公开

EP3922859A1 CENTRIFUGAL COMPRESSOR 有权转让
公开(公告)号：EP3922859A1
公开(公告)日：2021-12-15
申请号：EP20778156.8
申请日：2020-01-29
申请人： DAIKIN INDUSTRIES, LTD.
发明人： KAWAE, Arisa , NISHIMURA, Kousuke
IPC分类号： F04D29/056 , F04D29/28
摘要： A centrifugal compressor includes: a shaft member (52) that extends in an axial direction and that is rotatable; and an impeller (12) including a hub (121) that is disposed on an end portion of the shaft member (52) and a plurality of blades (122, 123) that are disposed on an outer peripheral surface of the hub (121). The impeller (12) has a shape that tapers outward in the axial direction. A cover member (125) is disposed at least at an end portion (12a) of the impeller (12) outside in the axial direction, the cover member (125) being joined to outer peripheries of the plurality of blades (122, 123) in a radial direction and covering at least a part of the plurality of blades (122, 123) from outside in the radial direction. A first bearing (15) that rotatably supports the impeller (12) is disposed outside in the radial direction of the cover member (125).

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