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1.发明授权公开(公告)号：US08720213B2
公开(公告)日：2014-05-13
申请号：US12372131
申请日：2009-02-17
CPC分类号： F04B49/225 , F04B2027/1868 , F04B2027/1881
摘要： A variable displacement compressor with a compensated suction shutoff valve (SSV). The SSV prevents noise generated by a suction reed valve at low refrigerant flow rates in an internal suction region from propagating to an air conditioner evaporator by moving a piston to obstruct an opening and restrict fluid communication. The degree of restriction is decreased by an opening force generated by refrigerant at an external suction pressure acting over a first area, and increased by refrigerant at a crankcase pressure acting over a second area. The second area is smaller than the first area so that at high refrigerant flow rates, the effect of crankcase pressure is reduced so that the restriction is reduced and the compressor operates at greater efficiency. The piston position is also influenced by refrigerant at a pressure intermediate the external suction pressure and the internal suction pressure acting over a third area.
摘要翻译： 具有补偿抽吸截止阀（SSV）的可变排量压缩机。 SSV防止吸入簧片阀在内部吸入区域中以低制冷剂流量产生的噪声，通过移动活塞以阻塞开口并限制流体连通而传播到空调蒸发器。 在作用于第一区域的外部吸入压力下由制冷剂产生的打开力降低限制的程度，并且由作用在第二区域上的曲轴箱压力下的制冷剂增加。 第二区域小于第一区域，使得在高制冷剂流量下，曲轴箱压力的作用减小，从而减小了限制并且压缩机以更高的效率运行。 活塞位置也受到在外部吸入压力和作用在第三区域上的内部吸入压力之间的压力下的制冷剂的影响。
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公开(公告)号：US20090205347A1
公开(公告)日：2009-08-20
申请号：US12372131
申请日：2009-02-17
CPC分类号： F04B49/225 , F04B2027/1868 , F04B2027/1881
摘要： A variable displacement compressor with a compensated suction shutoff valve (SSV). The SSV prevents noise generated by a suction reed valve at low refrigerant flow rates in an internal suction region from propagating to an air conditioner evaporator by moving a piston to obstruct an opening and restrict fluid communication. The degree of restriction is decreased by an opening force generated by refrigerant at an external suction pressure acting over a first area, and increased by refrigerant at a crankcase pressure acting over a second area. The second area is smaller than the first area so that at high refrigerant flow rates, the effect of crankcase pressure is reduced so that the restriction is reduced and the compressor operates at greater efficiency. The piston position is also influenced by refrigerant at a pressure intermediate the external suction pressure and the internal suction pressure acting over a third area.
摘要翻译： 具有补偿抽吸截止阀（SSV）的可变排量压缩机。 SSV防止吸入簧片阀在内部吸入区域中以低制冷剂流量产生的噪声，通过移动活塞以阻塞开口并限制流体连通而传播到空调蒸发器。 在作用于第一区域的外部吸入压力下由制冷剂产生的打开力降低限制的程度，并且由作用在第二区域上的曲轴箱压力下的制冷剂增加。 第二区域小于第一区域，使得在高制冷剂流量下，曲轴箱压力的作用减小，从而减小了限制并且压缩机以更高的效率运行。 活塞位置也受到在外部吸入压力和作用在第三区域上的内部吸入压力之间的压力下的制冷剂的影响。
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