JPS6081294U - Rotary compressor capacity control device - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は一般的な冷凍サイクル図、第２図及び第３図は
従来例を示し、第２図は回転圧縮機の縦断面図、第３図
は第２図のｍ−ｍ’線断面図、第４図及び第５図はこの
考案を示し、第４図は回転圧縮機の横断面図、第５図は
回転圧縮機の要部拡大断面図である。 １・・・回転圧縮機、９・・・シリンダ、１２・・・ロ
ーラ、２２・・・導出孔、２４・・・容量調節弁、２７
・・・ガス逃し溝。 第３図 第４図Fig. 1 is a general refrigeration cycle diagram, Figs. 2 and 3 show conventional examples, Fig. 2 is a vertical cross-sectional view of a rotary compressor, and Fig. 3 is a cross-section taken along the line mm-m' in Fig. 2. 4 and 5 show this invention, FIG. 4 is a cross-sectional view of a rotary compressor, and FIG. 5 is an enlarged cross-sectional view of a main part of the rotary compressor. DESCRIPTION OF SYMBOLS 1... Rotary compressor, 9... Cylinder, 12... Roller, 22... Outlet hole, 24... Capacity control valve, 27
...Gas relief groove. Figure 3 Figure 4

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] シリンダ内の中間圧力部に連通ずる導出孔を設け、この
導出孔を適宜開閉する容量調節弁に任意の圧力で背圧を
加えるようにした回転圧縮機において、シリンダ内に開
口する導出孔の開口部と連通ずるシリンダ内周壁にロー
ラの回転方向に沿ってガス逃し溝を設けたことを特徴と
する回転圧縮機の容量制御装置。In a rotary compressor that is provided with a discharge hole that communicates with an intermediate pressure section in the cylinder and applies back pressure at a desired pressure to a capacity control valve that opens and closes the discharge hole as appropriate, the opening of the discharge hole that opens in the cylinder. 1. A capacity control device for a rotary compressor, characterized in that a gas relief groove is provided along the rotational direction of a roller in the inner circumferential wall of a cylinder that communicates with the cylinder.