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    • 3. 发明授权
    • Method of stepless capacity control of a reciprocating piston compressor and piston compressor with such control
    • 具有这种控制的往复活塞式压缩机和活塞式压缩机的无级容量控制方法
    • US07331767B2
    • 2008-02-19
    • US10664042
    • 2003-09-17
    • Bernhard SpieglPeter SteinrückGunther MachuMichael Miks
    • Bernhard SpieglPeter SteinrückGunther MachuMichael Miks
    • F04B49/06
    • F04B39/08F04B49/243
    • For stepless capacity control of a reciprocating piston compressor, an unloader (2) arranged on a suction valve (1) keeps open said suction valve (1) over a thereby controllable portion of the working cycle of the compressor by means of an unloading piston (4) biased by gas pressure via a control valve (3). The gas pressure biasing the unloading piston (4) is always above the gas pressure required to overcome the maximum possible reverse flow force, whereby a controllable partial discharge of the unloading cylinder (6) is performed in each phase of the working cycle up to the closing of the suction valve (1) by means of the control valve (3), which is designed to switch rapidly. The theoretical discharge time of the entire discharging volume for the partial discharge is preferably maximal nearly equal or even less than twice the duration of the working cycle.
    • 对于往复式活塞式压缩机的无级容量控制,布置在吸入阀(1)上的卸载器(2)通过卸载活塞(1)将所述吸入阀(1)保持在压缩机的工作循环的可控部分上 4)通过控制阀(3)由气体压力偏置。 偏压卸载活塞(4)的气体压力总是高于克服最大可能反向流动力所需的气体压力,从而在工作循环的每个阶段中执行卸载气缸(6)的可控局部排放直到 通过设计为快速切换的控制阀(3)关闭吸入阀(1)。 整个放电容积的理论放电时间优选为最大近似等于或甚至小于工作循环持续时间的两倍。