JP2016079885A5

JP2016079885A5 -

Info

Publication number: JP2016079885A5
Application number: JP2014211769A
Authority: JP
Filing date: 2014-10-16
Publication date: 2016-09-15
Anticipated expiration: 2034-10-16

Description

上記目的を達成するため、請求項１に記載の圧縮機の発明では、非回転部材としての固定側部材（１２）と、
固定側部材との間に圧縮室（１５）を形成し、その固定側部材に対し所定の公転方向（ＤＲｒｔ）へ公転運動することにより圧縮室の容積と位置とを変化させる旋回側部材（１１）とを備えると共に、
外部から吸入された中間圧流体を圧縮室にて圧縮過程の流体へ合流させる合流用吸入口（３９）が設けられたスクロール式圧縮機であって、
圧縮室側から合流用吸入口側へ流体が逆流することを防止する逆流防止装置（５０）を、固定側部材と旋回側部材とを有する圧縮機構部（１０）に備え、
固定側部材には、外部から吸入された流体を、逆流防止装置から圧縮室内の圧縮過程の流体へ合流させる合流用通路（５１）が形成され、
合流用通路は、逆流防止装置に接続された通路入口（５１ａ）と圧縮室に接続された通路出口（５１ｂ）とを有し、
公転運動の中心軸方向（ＤＲ１）から見たときに、固定側部材のスクロール溝（１２ａ）の側壁面（１２ｂ）を規定する仮想のスクロール基礎円の中心と通路出口の中心とを通る径方向基準直線（Ｌｓｔ）に対する合流用通路の傾き角度αは、「０°＜α＜１８０°」の範囲内に設定され、且つ、通路出口は、通路入口に対し、公転運動にて圧縮室が移動する側へずれて位置していることを特徴とする。 In order to achieve the above object, in the compressor invention according to claim 1, a stationary member (12) as a non-rotating member;
A revolving side member (11) that forms a compression chamber (15) between the fixed side member and changes the volume and position of the compression chamber by revolving in a predetermined revolving direction (DRrt) with respect to the fixed side member. ) And,
A intermediate pressure fluid sucked from the external scroll compressor confluence inlet for combining the fluid compression process (39) is provided in the compression chamber,
A backflow prevention device (50) for preventing fluid from flowing back from the compression chamber side to the merging inlet side is provided in a compression mechanism (10) having a stationary member and a swivel member ,
The stationary member is formed with a merging passage (51) for merging the fluid sucked from the outside with the fluid in the compression process in the compression chamber from the backflow prevention device,
The merging passage has a passage inlet (51a) connected to the backflow prevention device and a passage outlet (51b) connected to the compression chamber,
A radial direction passing through the center of the virtual scroll base circle that defines the side wall surface (12b) of the scroll groove (12a) of the fixed side member and the center of the passage outlet when viewed from the central axis direction (DR1) of the revolving motion. The angle of inclination α of the merging passage with respect to the reference straight line (Lst) is set within a range of “0 ° <α <180 °”, and the compression chamber moves by revolving motion at the passage outlet relative to the passage inlet. It is characterized in that it is shifted to the side to be.

上述の発明によれば、合流用通路内の流体は、旋回側部材で合流用通路が閉じ切られる直前において、圧縮室の中央部分に向かって流入し易くなる。 According to the invention described above, the fluid coupling diverted passage is immediately before the confluence passage is cut closed by turning side member, it tends to flow toward the central portion of the compression chamber.

Claims

A stationary member (12) as a non-rotating member;
A revolving side member that forms a compression chamber (15) between the fixed side member and changes the volume and position of the compression chamber by revolving in a predetermined revolving direction (DRrt) with respect to the fixed side member. (11) and
Confluence inlet for combining the fluid compression process in the intermediate pressure fluid sucked from outside the compression chamber (39) A scroll type compressor provided with,
A backflow prevention device (50) that prevents backflow of fluid from the compression chamber side to the merging inlet side is provided in the compression mechanism (10) having the fixed side member and the swivel side member ,
The stationary member is formed with a merging passage (51) for merging the fluid sucked from the outside from the backflow prevention device to the fluid in the compression process in the compression chamber,
The merging passage has a passage inlet (51a) connected to the backflow prevention device and a passage outlet (51b) connected to the compression chamber,
When viewed from the center axis direction (DR1) of the revolving motion, a center of a virtual scroll base circle that defines a side wall surface (12b) of the scroll groove (12a) of the fixed side member and a center of the passage outlet are defined. An inclination angle α of the merging passage with respect to the radial reference straight line (Lst) is set in a range of “0 ° <α <180 °”, and the passage outlet is rotated with respect to the passage inlet. A compressor characterized in that the compression chamber is shifted to a moving side by movement .

When viewed said centric shaft towards suited et al, the compression chamber, to claim 1, characterized in that both ends of and the compression chamber extends to the revolving direction is formed so as to have a pointed shape The compressor described.

The compressor according to claim 1 or 2 , wherein the fluid compressed in the compression chamber is carbon dioxide.