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图 1.11a和σ示出在小排气量无十字头的立式、角度式和ш型压缩机中,单体扁圆形阀（图1.11a ）与组合阀（图1.11σ ）的传统安装方式。被单体圆形阀所占据的面积部分限于气缸圆周范围,由于要求在气缸中设置座穴就不可避免地引起余隙容积增加。组合阀的气缸端面面积利用较之单体阀更为充分和获得更大的通流截面。吸入阀和压出阀相邻配置将导致通过隔板加热进入气缸的气体。为消除之,规定用水冷却隔板。为避免气缸加热吸入气体,有时用绝热材料复盖阀板表面。
Figure 1.11a and a show the conventional installation of a single oblate valve (figure 1.11a) with a combination valve (figure 1.11σ) in a low-displacement, crosshead-free vertical, angle and size compressor the way. The area occupied by the monoblock valve is limited to the cylinder circumference and inevitably increases the clearance volume due to the requirement of seating in the cylinder. The cylinder area of the combination valve is more fully utilized than the one-way valve and a larger flow cross-section is achieved. The adjacent arrangement of the suction valve and the pressure valve will result in the gas being heated by the partition into the cylinder. To eliminate it, the provisions of water cooling partitions. In order to avoid cylinder heating of the suction gas, the valve plate surface is sometimes covered with a heat insulating material.