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1.前言对空气压缩机的需要量虽然受到经济不景气的影响,但依然逐年增加,其产值到1987年已达到1250亿日元。与液压或电动式相比,气动式空气压缩机具有如下特点:(1)机械设备的结构与操作简单;(2)机械设备易于维修保养;(3)能量易于储存;(4)操作速度快,但不适用于瞬间大负载;(5)价格低廉;(6)漏泄少,污染小。用于产生压缩空气的压缩机从1980年到1987年的销售情况如图1所示,1987年由于日元升值等原因,大型的固定式往复压缩机的销售额有所降低,但是回转式却有所增加。尽
1. Introduction Although the demand for air compressors is affected by the economic downturn, it is still increasing year by year. Its output value reached 125 billion yen by 1987. Compared with the hydraulic or electric type, the pneumatic air compressor has the following characteristics: (1) the mechanical structure and the operation is simple; (2) the mechanical equipment is easy to maintain; (3) the energy is easy to store; (4) the operating speed , But not for the instantaneous load; (5) low price; (6) less leakage, less pollution. The sales of compressed air compressors from 1980 to 1987 are shown in Figure 1. In 1987, due to the appreciation of the yen and other reasons, sales of large fixed reciprocating compressors decreased, but rotary Has increased. Do