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A low-vibration type compressor for refrigerators using a self-standing support method.

Number: pap. 1343

Author(s) : INAGAKI K., BONKOBARA Y., KONDOU T., et al.

Summary

To reduce the vibration of reciprocating compressors used in household refrigerators, we propose a “self-standing support method” to support the drive unit in a compressor shell. We verified its validity with respect to vibration suppression effects through experiments as well as numerical calculations using a simplified model that was created based on an actual compressor structure. The results are as follows. (1) The self-standing support method attaches a spherical support element to the bottom of the drive unit, which is directly placed on the plate. The method does not require conventional support springs, and thus it can substantially reduce the natural frequency. Therefore, the entire natural frequency can be eliminated from the region of rotational speeds for operation. We verified that the creation of resonance-caused vibration was avoided in the region of low rotational speeds. (2) Aligning the application point of the unbalance force with the center of percussion against the contact point of the spherical support eliminates the friction force acting at the contact point even with the generation of the unbalance force, suppressing the vibration transmission from the drive unit to the plate. Accordingly, we verified that the vibration transmission to the plate could be sufficiently suppressed, even if the unbalance force acting at the drive unit increases in the region of high rotational speeds.

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Pages: 10

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Details

  • Original title: A low-vibration type compressor for refrigerators using a self-standing support method.
  • Record ID : 30024300
  • Languages: English
  • Source: 2018 Purdue Conferences. 24th International Compressor Engineering Conference at Purdue.
  • Publication date: 2018/07/09

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