JPS63113788U

JPS63113788U -

Info

Publication number: JPS63113788U
Application number: JP616687U
Authority: JP
Priority date: 1987-01-20
Filing date: 1987-01-20
Publication date: 1988-07-22

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示す断面図、第
２図は同実施例に用いられるレリースパイプの要
部を示す斜視図、第３図は第２図の―線断面
図、第４図はこの考案の他の実施例を示す第１図
と同様な断面図、第５図は従来例を示す断面図、
第６図は同従来例に組込まれている弁ガイドの斜
視図である。図中、１０はシリンダ、１１は弁孔、１３は弁
体、１４はレリースパイプ、１５は大径部、１６
は段部、１７は小径部、１８は通気孔である。 Fig. 1 is a sectional view showing an embodiment of this invention, Fig. 2 is a perspective view showing the main parts of a release pipe used in the same embodiment, Fig. 3 is a sectional view taken along the line - - of Fig. 2, and Fig. 4 is a sectional view showing an embodiment of the invention. The figure is a sectional view similar to FIG. 1 showing another embodiment of this invention, and FIG. 5 is a sectional view showing a conventional example.
FIG. 6 is a perspective view of a valve guide incorporated in the conventional example. In the figure, 10 is a cylinder, 11 is a valve hole, 13 is a valve body, 14 is a release pipe, 15 is a large diameter part, 16
17 is a small diameter portion, and 18 is a ventilation hole.

Claims

[Claims for Utility Model Registration] (1) A release hole and a valve hole with a larger diameter are coaxially connected to a predetermined part of the cylinder in which the rotor is housed, and a valve body is installed in the valve hole. The operating capacity control device controls the operating capacity of a rotary compressor by selectively opening and closing the release hole with the valve body, the operating capacity control device having a release pipe press-fitted into the valve hole. , at one end of the release pipe on the side to be press-fitted into the valve hole, a large diameter portion having a substantially larger diameter than the valve body and capable of movably housing the valve body; The small diameter portion has a substantially small diameter and forms a stepped portion acting as a stopper for the valve body at the boundary with the large diameter portion, and the large diameter portion is formed when the valve body is pressed against the stopper. An operating capacity control device for a rotary compressor, characterized in that a ventilation means is formed to communicate the small diameter portion with the small diameter portion. (2) In claim (1) for utility model registration, the ventilation means is a ventilation groove formed from one end of the large-diameter portion to the small-diameter portion through the stepped portion. Capacity control device. (3) In claim (1) or (2) of the utility model registration, a spring is interposed between the stepped portion and the valve body to bias the valve body toward the release hole. Rotary compressor operating capacity control device. (4) The operating capacity control device for a rotary compressor according to claim (1) or (2), wherein one end of the large diameter portion acts as a stopper for positioning the valve hole.