公开(公告)号：US20250116273A1

公开(公告)日：2025-04-10

申请号：US18832318

申请日：2022-08-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hirofumi YOSHIDA ,  Akifumi HYODO ,  Yusuke IMAI

IPC: F04C29/06 ,  F04C18/356

Abstract: A rotary compressor 100 includes a drive shaft 101 having an eccentric shaft 101a, a piston 102 fitted onto the eccentric shaft 101a, a cylinder 103 that receives the eccentrically rotating piston 102, an upper end plate 104 and a lower end plate 105 that close the upper and lower opening surfaces of the cylinder 103, a vane 106 that divides a space formed by the cylinder 103, the piston 102, the upper end plate 104, and the lower end plate 105 into a suction chamber 113 and a compression chamber 114, a discharge space 117 that is formed by causing the cover 108 to close a recessed portion 107 obtained by recessing a surface of either the upper end plate 104 or the lower end plate 105 on the opposite side to the cylinder 103 and where discharge gas flows in from the compression chamber 114 and directly flows out to the outside of the compressor 100, and spatial volume of the discharge space 117 having 10 times enclosed volume of the cylinder 103, thereby reducing noise and vibration due to discharge pulsation as well as improving efficiency and reliability and reducing cost.

公开(公告)号：US20180291899A1

公开(公告)日：2018-10-11

申请号：US16003991

申请日：2018-06-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiroaki NAKAI ,  Hirofumi YOSHIDA ,  Shingo OYAGI ,  Yu SHIOTANI ,  Tsuyoshi KARINO

IPC: F04C18/356 ,  F04C18/44 ,  F04C23/00 ,  F04C29/00

CPC classification number: F04C18/3564 ,  F04C18/356 ,  F04C18/44 ,  F04C23/00 ,  F04C23/001 ,  F04C29/00 ,  F04C29/0057 ,  F04C2240/20 ,  F04C2240/60

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.

公开(公告)号：US20150322949A1

公开(公告)日：2015-11-12

申请号：US14410951

申请日：2013-10-22

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Shingo OYAGI ,  Hirofumi YOSHIDA ,  Hiroaki NAKAI ,  Yu SHIOTANI ,  Ryuichi OHNO ,  Tsuyoshi KARINO

IPC: F04C29/02 ,  F04C27/00 ,  F04C18/32

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 3 includes a substantially spiral oil groove 23 which is provided in inner peripheral surfaces of bearings 14 and 15 of the shaft 6. One end of the oil groove 23 opens at a bearing base portion 24, and the other end of the oil groove 23 opens at a bearing end 25. According to this configuration, oil in a gap between the shaft 6 and inner peripheries of the bearings 14 and 15 forcibly discharges, into the hermetic container 1, gas bubbles generated in a sliding gap between the shaft 6 and the bearings 14 and 15 by action of a viscosity pump generated by the substantially spiral oil groove 23, 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3包括设置在轴6的轴承14和15的内周面的大致螺旋形的油槽23.油槽23的一端在轴承基部24处开口，油的另一端 槽23在轴承端部25处开口。根据该结构，轴6和轴承14和15的内周之间的间隙中的油被强制地排出到密封容器1中，在轴之间的滑动间隙中产生气泡 6和轴承14和15通过由基本上螺旋形的油槽23产生的粘度泵的作用，并且可以提供一种旋转式压缩机，其能够防止由轴承滑动部分的气体受累引起的卡死和磨损，并且能够 在使用包含R32的制冷剂时确保可靠性。