JPWO2022054174A5

JPWO2022054174A5 -

Info

Publication number: JPWO2022054174A5
Application number: JP2022548296A
Authority: JP
Filing date: 2020-09-09
Publication date: 2022-11-07
Anticipated expiration: 2040-09-09

Description

本開示に係るスクロール圧縮機は、内壁面に突出部を有するシェルと、シェルに接続され、冷媒をシェル内に導入する吸入管と、台板とスクロール歯を有し、突出部に台板が支持されてシェルの内壁面に固定される固定スクロールと、台板とスクロール歯を有し、スクロール歯が形成された面と対向する面に凸部が形成され、固定スクロールとともに圧縮室を形成する揺動スクロールと、揺動スクロールの凸部を支持する揺動軸受が配置される主軸と、主軸を挿入する中空部分を有し、揺動スクロールの摺動面を摺動自在に支持するスラスト軸受と、主軸を支持する主軸受と、が配置され、吸入管からシェル内に導入された冷媒を吸入して圧縮室に導く吸入ポートを備えるフレームと、シェルに接続され、圧縮室で圧縮された冷媒を吐出する吐出管と、を備え、主軸の中心軸に垂直なスクロール圧縮機の断面において、揺動軸受と主軸受の少なくとも一部が、略同一平面状に配置されることを特徴とする。 A scroll compressor according to the present disclosure includes a shell having a protrusion on an inner wall surface, a suction pipe connected to the shell for introducing refrigerant into the shell, a base plate and scroll teeth, and the base plate being attached to the protrusion. It has a fixed scroll that is supported and fixed to the inner wall surface of the shell, a base plate and scroll teeth, and a convex portion is formed on a surface opposite to the surface on which the scroll teeth are formed, and forms a compression chamber together with the fixed scroll. An orbiting scroll, a main shaft on which an orbiting bearing that supports the convex portion of the orbiting scroll is arranged, and a thrust bearing that has a hollow portion into which the main shaft is inserted and that slidably supports the sliding surface of the orbiting scroll , a main bearing for supporting the main shaft, a frame provided with a suction port for sucking the refrigerant introduced into the shell from the suction pipe and leading it to the compression chamber, and a frame connected to the shell and compressed in the compression chamber. and a discharge pipe for discharging refrigerant, wherein at least part of the swing bearing and the main bearing are arranged substantially on the same plane in a cross section of the scroll compressor perpendicular to the central axis of the main shaft. .

Claims

A scroll compressor,
a shell having a protrusion on the inner wall surface;
a suction pipe connected to the shell and introducing refrigerant into the shell;
a fixed scroll having a base plate and scroll teeth, the base plate being supported by the protruding portion and fixed to the inner wall surface of the shell;
an oscillating scroll having a base plate and scroll teeth, a protrusion formed on a surface opposite to the surface on which the scroll teeth are formed, and forming a compression chamber together with the fixed scroll;
a main shaft on which an oscillating bearing that supports the convex portion of the oscillating scroll is arranged;
A thrust bearing that has a hollow portion into which the main shaft is inserted and slidably supports the sliding surface of the orbiting scroll, and a main bearing that supports the main shaft are arranged to extend from the suction pipe into the shell. a frame provided with an intake port for inhaling the refrigerant introduced into and guiding it to the compression chamber ;
a discharge pipe connected to the shell and discharging the refrigerant compressed in the compression chamber ;
A scroll compressor, wherein at least a part of the swing bearing and the main bearing are arranged substantially on the same plane in a cross section of the scroll compressor perpendicular to the central axis of the main shaft.

The main shaft has an eccentric portion having a concave portion eccentrically provided from the central axis of the main shaft, and the concave portion of the eccentric portion has the oscillating bearing that supports the convex portion of the oscillating scroll. A scroll compressor according to claim 1.

An Oldham ring for preventing rotation of the orbiting scroll is provided on the inner diameter side of the thrust bearing,
The frame is formed with an Oldham accommodating portion for accommodating the Oldham ring, and is formed with an Oldham groove for accommodating a key portion protruding downward from the ring portion of the Oldham ring. 3. The scroll compressor according to claim 1, wherein the scroll compressor is formed at least a predetermined distance from the hollow portion.

A stator formed in a ring shape and fixed to the inner wall surface of the shell; a driving mechanism unit arranged in the
a balancer arranged above the drive mechanism;
a balancer cover surrounding the top surface and side surfaces of the balancer;
The radius of the upper surface of the balancer cover is longer than the outer diameter of the locus of rotation of the upper surface of the balancer centered on the central axis of the main shaft, and among the connection positions of one or more wires connected to the stator, 4. The scroll compressor according to any one of claims 1 to 3, wherein the distance is shorter than the distance between the connection position closest to the central axis of the main shaft and the central axis of the main shaft.

5. The method according to claim 4, wherein the radius of the upper surface of the balancer cover is longer than the outer diameter of the locus of rotation of the upper surface of the balancer around the central axis of the main shaft, and is substantially equal to or less than the inner diameter of the stator. Scroll compressor as described.

5. The axial dimension of the frame is shorter than the axial dimension of the eccentric portion of the main shaft, and the balancer is fixed to the side surface of the eccentric portion below the frame. 5. The scroll compressor according to 5.

7. A scroll compressor according to any one of claims 4 to 6, wherein said main shaft and said balancer are integrally formed.