JPS6456592U

JPS6456592U -

Info

Publication number: JPS6456592U
Application number: JP15191787U
Authority: JP
Priority date: 1987-10-02
Filing date: 1987-10-02
Publication date: 1989-04-07

Description

[Brief explanation of the drawing]

第１図は本考案圧縮機の一実施例を示すもので
スクリユーロータを展開した状態の一部省略概略
平面図、第２図は一部を省略した概略断面図、第
３図は別の実施例を示す第１図に対応した概略平
面図、第４図は本考案の実施例による振動値−周
波数の特性図、第５図は従来例による振動値−周
波数の特性図、第６図は従来例を示す概略平面図
である。２……スクリユーロータ、２ａ……スクリユー
溝、３……ゲートロータ、３ａ……歯、６……容
量制御通路、７……スライド弁、７１……吐出ポ
ート、７１ａ……第１端面、７１ｂ……第２端面
、７２……先行ポート。 Fig. 1 shows an embodiment of the compressor of the present invention; Fig. 2 is a partially omitted schematic plan view with the screw rotor unfolded; Fig. 2 is a partially omitted schematic sectional view; Fig. 3 is a schematic plan view of the compressor according to the present invention; A schematic plan view corresponding to FIG. 1 showing the embodiment, FIG. 4 is a vibration value-frequency characteristic diagram according to the embodiment of the present invention, FIG. 5 is a vibration value-frequency characteristic diagram according to the conventional example, and FIG. 6 FIG. 2 is a schematic plan view showing a conventional example. 2... Screw rotor, 2a... Screw groove, 3... Gate rotor, 3a... Teeth, 6... Capacity control passage, 7... Slide valve, 71... Discharge port, 71a... First end surface, 71b...second end face, 72...preceding port.

Claims

[Scope of utility model registration request]

Screw rotor 2 with screw groove 2a
and a plurality of teeth 3 that engage with the screw groove 2a.
A gate rotor 3 with a diameter of The slide valve 7 has a discharge valve defined by a first end surface 71a along the high pressure side end wall 2b of the screw rotor 2 and a second end surface 71b along the screw groove 2a. In the screw compressor in which a port 71 is formed, the second end surface 7 of the discharge port 71
1b, one side of the screw rotor 2 in the rotation direction is displaced toward the low pressure side with respect to the screw groove 2a, and a leading port 7 opens with respect to the screw groove 2a prior to the discharge port 71.
1. A screw compressor characterized by forming 2.