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CN100582486C 设有输送调节装置的容积式螺旋压缩机 失效 - 权利终止

设有输送调节装置的容积式螺旋压缩机
摘要：
容积式螺旋压缩机(1；50)，其包括：壳体(2)，其设有吸入腔(3)和输送腔(4)，在吸入腔(3)和输送腔(4)之间包括有一对螺旋转子(5)；容纳油的盘(6)；装有外部与所述转子(5)配合的滑阀(8)和流体操作致动器(9)的输送调节单元(7)，在流体操作致动器(9)中限定出带有滑动活塞(12)的活动腔(11)，活塞(12)与所述滑阀(8)连接。所述调节单元(7)包括流动转换单元(30、40)，所述流动转换单元(30、40)将致动器的活动腔(11)连接到盘(6)和吸入腔(3)，所述流动转换单元(30、40)包括静态流动开关(31、41)，静态流动开关(31、41)可拆装地与转换电磁阀(22)相联，所述转换电磁阀(22)电气连接到控制单元(23)上。转换电磁阀(22)适于可选择地与各不相同的静态流动开关(31、41)相联，依靠滑阀(8)相对于转子(5)的位置，就可以获得不连续或连续变化的压缩流体的输送量。
摘要（英）：

A volumetric compressor (1; 50) comprising: a casing (2) provided with a suction chamber (3) and a delivery chamber (4), between which a pair of screw rotors (5) is included; a pan (6) containing oil, and a delivery adjustment unit (7) equipped with a slide valve (8), cooperating with the rotors (5) and with a fluid-operated actuator (9), in which it is possible to identify an active chamber (11) with a sliding piston (12) connected to the slide valve (8). The adjustment unit (7) comprises a flow switching unit (30, 40), that connects the active chamber (11) of the actuator to the pan (6) and to the suction chamber (3) and comprises a static flow switch (31, 41) removably associated with a switching solenoid valve (22) electrically connected to a control unit (23). The switching solenoid valve (22) is suited to be associated, alternatively, with different static flow switches (31, 41) that make it possible to obtain deliveries of compressed fluid varying discretely or continuously, depending on the position of the slide valve (8) with respect to the rotors (5).

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