SCROLL COMPRESSOR AND REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2023/013370

A1

Provided is a scroll compressor in which fixing parts are provided on an end of an arm that supports a bearing, and a plurality of welding pins are press-inserted into each fixing part to weld-fix the welding pins and a casing, wherein damage to the arm when the welding pins are press-inserted is suppressed. The scroll compressor includes a crankshaft; a lower bearing that supports the crankshaft; an arm that extends toward a casing and supports the lower bearing; a fixing part (96) that is connected to an arm end and that is fixed to the casing; and a first pin (160) and a second pin (260). A first hole (98a) and a second hole (98b) are formed in the fixing part. When viewing the first hole along a radial direction of the crankshaft, a center (O1) of the first hole overlaps with a smallest cross-sectional area portion (94a) of the arm and, when viewing the second hole along the radial direction of the crankshaft, a center (O2) of the second hole is offset from the smallest cross-sectional area portion of the arm. The first pin is press-inserted into the first hole, and the second pin is press-inserted into the second hole. A holding force of the first pin by the fixing part is greater than a holding force of the second pin by the fixing part.

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NAGAHARA KENJI
TSUKA YOSHITOMO
TAKAHASHI NOBUO
NISHIKAWA SAYUMI
ARAKI KOSUKE
FUKUNAGA TSUYOSHI

PCT/JP2022/027430

February 09, 2023

July 12, 2022

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DAIKIN IND LTD (JP)

F04C29/00; F04C18/02

JP2017089426A	2017-05-25
JP2017025762A	2017-02-02
JP2015137574A	2015-07-30
JPH07217554A	1995-08-15
JP2006170102A	2006-06-29
US20090269192A1	2009-10-29
JP2017089426A	2017-05-25

SHINJYU GLOBAL IP (JP)

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