公开(公告)号：US20210003131A1

公开(公告)日：2021-01-07

申请号：US16980426

申请日：2018-04-23

Applicant: Mitsubishi Electric Corporation

Inventor： Wataru IWATAKE ,  Shin SEKIYA ,  Masayuki KAKUDA ,  Raito KAWAMURA ,  Kei SASAKI

IPC: F04C18/02 ,  F04C29/02

Abstract: A scroll compressor in which refrigerant gas is sucked into a hermetic container and is then compressed in a compression chamber. The scroll compressor includes an orbiting scroll including a second end plate having a second surface. The second end plate has an annular groove having an opening that opens into the second surface facing a frame and serving as a back-pressure chamber with the opening being closed by the frame, a gas communication path through which the groove communicates with the compression chamber in which the refrigerant gas is being compressed, and a first oil supply passage having a first opening that opens into at least one of a region inside the groove and a region outside the groove in the second surface and through which the refrigerating machine oil is supplied to a gap between the second surface and the frame.

公开(公告)号：US20190063436A1

公开(公告)日：2019-02-28

申请号：US16085820

申请日：2017-03-28

Applicant: Mitsubishi Electric Corporation

Inventor： Yuji TAKAMURA ,  Tomokazu MATSUI ,  Masayuki KAKUDA ,  Hideaki NAGATA

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

Abstract: A scroll compressor includes a slider including a cylindrical portion supported by a rocking bearing provided on an orbiting scroll so that it rotates freely, and a balance weight portion connected to the cylindrical portion. When a direction opposite to an eccentric direction of the orbiting scroll is a counter eccentric direction and a direction of a central axis of the rocking bearing is a Z-axis direction, the balance weight portion includes a main weight portion provided at a position distant from a center of rotation of the slider in the counter eccentric direction, and a counter-weight portion provided at a position spaced away from the orbiting scroll than a position of a center of the rocking bearing in the Z-axis direction and at a position distant from the center of rotation of the slider in the eccentric direction.

公开(公告)号：US20160230764A1

公开(公告)日：2016-08-11

申请号：US15026996

申请日：2013-12-09

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Kohei TATSUWAKI ,  Fumihiko ISHIZONO ,  Masayuki KAKUDA ,  Yuji TAKAMURA

IPC: F04C29/00 ,  F04C29/02 ,  F25B1/04 ,  F04C18/02

CPC classification number: F04C29/0057 ,  F01C17/066 ,  F04C18/0215 ,  F04C18/0253 ,  F04C23/008 ,  F04C29/0021 ,  F04C29/0085 ,  F04C29/025 ,  F04C2240/50 ,  F04C2240/807 ,  F25B1/04 ,  F25B47/022 ,  F25B49/025 ,  F25B49/027

Abstract: A scroll compressor includes a stationary scroll; an orbiting scroll having a pair of first Oldham keyways on one surface thereof, the orbiting scroll defining a compression chamber in combination with the stationary scroll; a frame having a pair of second Oldham keyways and supporting the orbiting scroll; and an Oldham ring for inhibiting rotation of the orbiting scroll, the Oldham ring having a pair of first Oldham keys on one surface thereof and a pair of second Oldham keys on the other surface thereof, the first Oldham keys slidably engaging with the respective first Oldham keyways, the second Oldham keys slidably engaging with the respective second Oldham keyways. The Oldham ring includes at least a pair of projections on the other surface thereof, and the projections have a height such that when the Oldham ring is inclined during simple harmonic motion, one of the projections makes contact with the one surface of the orbiting scroll before each of the first Oldham keys is brought into contact with the corresponding first Oldham keyway at two locations.

Abstract translation: 涡旋压缩机包括固定涡卷; 轨道式涡旋盘在其一个表面上具有一对第一奥德姆键槽，所述绕动涡旋盘与所述固定涡旋盘组合地限定压缩室; 具有一对第二十字键槽并支撑绕动涡卷的框架; 以及用于禁止绕动涡盘的旋转的奥德姆环，该十字环在其一个表面上具有一对第一个十字键，另一个表面上具有一对第二个十字键，第一个十字键与第一个奥德姆 键槽，第二个Oldham键可滑动地与相应的第二个Oldham键槽啮合。 该十字环在其另一个表面上至少包括一对突起，并且突起具有这样的高度，使得当在简单谐波运动期间该十进制环是倾斜的时，其中一个突起与动涡卷的一个表面接触，之后 每个第一个Oldham钥匙与两个位置的相应的第一个Oldham键槽接触。

公开(公告)号：US20180142687A1

公开(公告)日：2018-05-24

申请号：US15568509

申请日：2015-06-10

Applicant: Mitsubishi Electric Corporation

Inventor： Kohei TATSUWAKI ,  Fumihiko ISHIZONO ,  Masayuki KAKUDA

IPC: F04C18/02 ,  F04C23/00

CPC classification number: F04C18/0215 ,  F04C18/02 ,  F04C18/0246 ,  F04C18/0269 ,  F04C18/0284 ,  F04C23/001 ,  F04C23/008 ,  F04C27/005

Abstract: A scroll compressor includes a fixed scroll and an orbiting scroll, which are made of materials having different strengths and which include respective scroll laps. The scroll lap of the fixed scroll and the orbiting scroll having a lower material strength has a thickness satisfying tl=2aα, where tl represents scroll lap thickness, a represents basic circle radius, and α represents phase angle. The scroll lap of the fixed scroll and the orbiting scroll having a higher material strength has a thickness satisfying th=2aβ, where th represents scroll lap thickness, a represents basic circle radius, and β represents phase angle. The scroll lap thickness th of the fixed scroll and the orbiting scroll having the higher material strength is set to be less than the scroll lap thickness tl of the fixed scroll and the orbiting scroll having the lower material strength.

公开(公告)号：US20170335847A1

公开(公告)日：2017-11-23

申请号：US15522150

申请日：2014-11-20

Applicant: Mitsubishi Electric Corporation

Inventor： Raito KAWAMURA ,  Shin SEKIYA ,  Shinichi WAKAMOTO ,  Masayuki KAKUDA

IPC: F04C18/02 ,  F04C29/12 ,  F04C29/00

CPC classification number: F04C18/0292 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/0085 ,  F04C29/028 ,  F04C29/12 ,  F04C2210/26 ,  F04C2240/30 ,  F04C2240/40

Abstract: A second space communicated with a first space through communicating paths is provided on an outer circumferential side of first and second scroll bodies. Scroll end portions of the first and second scroll bodies form an inlet port configured to suck gas refrigerant into a compression chamber from the second space. Open ends of the communicating paths on a side of the second space are located at an angle larger than 0° and less than or equal to 180°, around a central axis of a rotating shaft portion, from the inlet ports in a scroll involute direction of the first scroll body and the second scroll body, respectively. Injection ports in a part of an outer circumference of the second space between the open ends and the inlet ports in a circumferential direction are configured to eject liquid refrigerant in a direction toward the inlet ports, respectively.

公开(公告)号：US20170097002A1

公开(公告)日：2017-04-06

申请号：US15311545

申请日：2014-07-01

Applicant: Mitsubishi Electric Corporation

Inventor： Fumihiko ISHIZONO ,  Masayuki KAKUDA ,  Kohei TATSUWAKI ,  Yuji TAKAMURA

IPC: F04C29/12 ,  F04C18/02

CPC classification number: F04C29/124 ,  F04B39/10 ,  F04B39/1073 ,  F04C18/0215 ,  F04C23/008 ,  F04C29/128 ,  F04C2210/263 ,  F04C2210/268

Abstract: A fluid compressor includes a closed container having an inlet, a compression mechanism including a compression chamber in which fluid flowing into the closed container through the inlet is compressed, a discharge port through which the fluid compressed in the compression chamber is allowed to flow, a discharge valve opening and closing the discharge port, and a valve retainer limiting an amount of lift of the discharge valve. The discharge valve includes a curved portion whose shape is defined by one or more curvatures. When the discharge port is closed by the discharge valve, the valve retainer and the discharge valve are spaced apart from each other.

公开(公告)号：US20160131134A1

公开(公告)日：2016-05-12

申请号：US14899320

申请日：2013-09-19

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Masayuki KAKUDA ,  Kohei TATSUWAKI ,  Masaya OKAMOTO ,  Koichi FUKUHARA ,  Fumihiko ISHIZONO ,  Masaaki SUGAWA

IPC: F04C18/02

CPC classification number: F04C18/0269 ,  F01C1/0246 ,  F01C1/0269 ,  F01C1/0284 ,  F04C18/0215 ,  F04C18/0276 ,  F04C18/0284 ,  F04C23/008 ,  F04C29/12

Abstract: A scroll compressor to compress fluid in a compression chamber formed by combining a scroll wrap of a fixed scroll and a scroll wrap of an orbiting scroll, the scroll wrap of the fixed scroll and the scroll wrap of the orbiting scroll each having a scroll inner end part having a bulb shape defined by an outer surface involute curve, an inner surface involute curve, and a plurality of arcs connecting an end of the outer surface involute curve and an end of the inner surface involute curve, at least one of the scroll inner end parts being formed in an n-tier stair-like shape in which n≧3) number of bulb shapes are stacked on top of one another in an upright direction of the scroll wrap, the scroll compressor being configured to satisfy φos(0)>φos(1)>φos(2)> . . . >φos(n−1) where involute roll angles of the outer surface involute curve in tiers of the stair-like shape of the scroll inner end part are φos(0), φos(1), φos(2), . . . , φos(n−1), respectively, from a wrap tip side to a wrap root side.

Abstract translation: 一种用于压缩压缩室中的流体的涡旋压缩机，其通过将固定涡旋盘的涡卷和涡旋盘绕的涡旋盘组合而形成，所述固定涡旋盘的涡卷和涡旋涡卷的涡旋盘绕件具有涡旋内端 具有由外表面渐开线曲线限定的灯泡形状的部分，内表面渐开线曲线和连接外表面渐开线曲线的端部和内表面渐开线曲线的端部的多个弧，至少一个涡卷内 涡卷压缩机被构造成满足＆lt; os（（...））的涡卷压缩机，其中，n型层状梯形形状，其中n≥3）个球形形状彼此堆积在涡卷的直立方向上， 0）>＆phgr; os（1）>＆phgr; os（2）>。 。 。 （0），＆phgr; os（1），＆phgr; os（1）中的外圆面渐开线曲线的渐开线滚动角度 os（2），。 。 。 ，＆phgr; os（n-1），从包裹尖端侧到卷绕根侧。