公开(公告)号：US06398520B2

公开(公告)日：2002-06-04

申请号：US09239142

申请日：1999-01-28

Applicant: Chang-ju Han

Inventor： Chang-ju Han

IPC: F04B3900

CPC classification number: F04C29/068 ,  F04C18/3564 ,  F04C23/008 ,  F04C29/065 ,  Y10S181/403

Abstract: A discharge muffler of a hermetic rotary compressor has a simple structure, and reduces the noises which occur due to pulsation of refrigerant and impact to a valve when the refrigerant, which is compressed in an inner space of a cylinder of the compressor, is discharged. The discharge muffler includes a muffler body which is disposed above an upper flange to define a noise reducing space with the upper flange, and has a pair of discharge openings through which the refrigerant, which is discharged to the noise reducing space, is discharged, and a phase varying means for preventing the noises which occur due to the pulsation of the refrigerant and the impact to the valve which is disposed at the discharge port, from being discharged together with the refrigerant. The phase varying means also functions to vary the phases of the noises and to counterbalance the noises. The phase varying means comprises a pair of covers which extend from the muffler body toward centers of the discharge openings to cover approximately half portions of the discharge openings from above and from below, respectively, in an alternating pattern. Accordingly, the noise, which is produced when the refrigerant is discharged, is blocked by a pair of covers which are disposed at the discharge openings, and the phases of the noises are varied, so that the noises are counterbalanced. As a result, the great noise reduction effect is guaranteed with a simple structure.

Abstract translation: 密封旋转式压缩机的排气消声器具有简单的结构，并且当在压缩机的气缸的内部空间中被压缩的制冷剂被排出时，减少了由于制冷剂的脉动而产生的噪声和对阀的冲击。 排气消声器包括消声器主体，其设置在上凸缘上方以限定具有上凸缘的减噪空间，并且具有一对排出口，排放到减噪空间的制冷剂通过该排出口排出;以及 用于防止由于制冷剂的脉动而产生的噪声以及对设置在排出口处的阀的冲击的相位改变装置与制冷剂一起排出。 相位变化装置还用于改变噪声的相位并抵消噪声。 相变装置包括从消音器主体朝向排出口的中心延伸的一对盖，分别以交替图案从上方和下方覆盖排出口的大约一半部分。 因此，当制冷剂排出时产生的噪声被布置在排出口处的一对盖阻挡，并且噪声的相位变化，使得噪声被平衡。 结果，以简单的结构保证了极大的降噪效果。