SEALED COMPRESSOR AND REFRIGERATION UNIT INCLUDING SEALED COMPRESSOR
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United States of America Patent
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app pub date -
May 31, 2016
filing date -
Mar 16, 2012
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Abstract
A sealed compressor of the present invention comprises a sealed container (101) accommodating an electric component (105) and a compression component (106) and storing lubricating oil (102); wherein the compression component (106) includes a shaft (110) including a main shaft section (111), a main bearing unit (120), and a thrust ball bearing (132); wherein the main shaft section (111) is provided with a first oil feeding passage (150) to transport the lubricating oil (102); the thrust ball bearing (132) includes a cage (133), balls (134), an upper race (135) and a lower race (136), and the thrust ball bearing (132) is provided with a second oil feeding passage (160) communicated with the first oil feeding passage (150) and configured to feed the lubricating oil (102) to the raceway groove provided in at least one of the upper race (135) and the lower race (136), and a discharge passage (180) through which the lubricating oil (102) is discharged.
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