JPS6386469U

JPS6386469U -

Info

Publication number: JPS6386469U
Application number: JP18079586U
Authority: JP
Priority date: 1986-11-25
Filing date: 1986-11-25
Publication date: 1988-06-06

Description

[Brief explanation of drawings]

第１図は実施例の部分縦断面図、第２図は第１
図の部分の拡大図、第３図ａ〜第３図ｅは弁座
８に対するスプール弁の変位状態を説明する要部
断面図、第４図はストローク比に対する絞り通路
面積比の変化を示す線図、第５図はストローク比
に対する冷房能力比の変化を示す線図、第６図は
弁座における絞り通路側面の別の態様を示す断面
図、第７図はスプール弁に対する絞り通路側面の
別の態様を示す断面図、第８図は弁座における絞
り通路面についてさらに別の態様を示す断面図、
第９図はスプール弁に対する絞り通路側面につい
てさらに別の態様を示す斜視図、第１０〜１４図
は従来技術に係る図面で、第１０図は冷房回路図
、第１１図はスプール弁が全開時のスプール弁と
弁座との位置関係を示す断面図、第１２図は同じ
く全閉後の断面図、第１３図はストローク比に対
する絞り通路面積比の変化を示す線図、第１４図
はストローク比に対する冷房能力比の変化を示す
線図である。７…スプール弁、７ｘ，８ｘ…絞り通路側面、
８…弁座、Ｈ…ストローク長、Ｈ_０…全開ストロ
ーク長、Ｓ…絞り通路面積、Ｓ_０…全開絞り通路
面積。 Fig. 1 is a partial vertical sectional view of the embodiment, and Fig. 2 is a partial longitudinal sectional view of the embodiment.
An enlarged view of the part shown in the figure, FIGS. 3a to 3e are main part sectional views explaining the displacement state of the spool valve with respect to the valve seat 8, and FIG. 4 is a line showing the change in the throttle passage area ratio with respect to the stroke ratio. Figure 5 is a diagram showing changes in cooling capacity ratio with respect to stroke ratio, Figure 6 is a sectional view showing another aspect of the throttle passage side surface in the valve seat, and Figure 7 is a diagram showing another aspect of the throttle passage side surface with respect to the spool valve. FIG. 8 is a sectional view showing yet another aspect of the throttle passage surface in the valve seat;
Fig. 9 is a perspective view showing yet another aspect of the throttle passage side for the spool valve, Figs. 10 to 14 are drawings related to the prior art, Fig. 10 is a cooling circuit diagram, and Fig. 11 is when the spool valve is fully open. 12 is a sectional view showing the positional relationship between the spool valve and the valve seat, FIG. 12 is a sectional view after the valve is fully closed, FIG. 13 is a diagram showing changes in the throttle passage area ratio with respect to the stroke ratio, and FIG. 14 is a diagram showing the stroke ratio. FIG. 3 is a diagram showing a change in cooling capacity ratio with respect to a cooling capacity ratio. 7...Spool valve, 7x, 8x...throttle passage side,
8... Valve seat, H... Stroke length, H ₀ ... Fully open stroke length, S... Throttle passage area, S ₀ ... Fully open throttle passage area.

Claims

[Claims for Utility Model Registration] 1. The throttle passage area ratio to the fully open throttle passage area in the throttle passage formed between the spool valve and the valve seat is stepped or curved with respect to the stroke ratio to the fully open stroke of the spool valve. A pressure control valve in which at least one of the throttle passage side surface of the spool valve or the throttle passage side surface of the valve seat is formed in a stepped or tapered shape so as to vary the pressure control valve. 2 Utility model registration claim 1 in which a three-step ring-shaped stepped portion is formed on the side surface of the throttle passage of the spool valve.
Pressure control valve as described in section.