Daikin Industries, Ltd.

Azusa Ujihara

Masahide Higuchi

Takehiro Kanayama

Hiroyuki Taniwa

Masanori Yanagisawa

Yoshihiro Kataoka

Kazuo Ida

Kouki Morimoto

Yasukazu Nabetani

Hiroaki Kojima

Hideki Mori

A compressor includes a hermetic container, a compression mechanism section disposed in the hermetic container, and a motor disposed in the hermetic container to drive the compression mechanism section. The motor has a rotor and a stator disposed so as to surround an outer periphery of the rotor. The stator includes a stator core and oil passage grooves. The stator core has a hollow circular cylindrical section and a plurality of circumferentially arranged teeth protruding radially inward from an outer peripheral surface of the hollow circular cylindrical section. The oil passage grooves are located radially outside of the teeth. The oil passage grooves are formed by cutting an outer peripheral surface of the hollow circular cylindrical section.

Compressor

A stator includes a stator core, which has a plurality of stacked electromagnetic steel sheets, caulking portions configured to fix the plurality of electromagnetic steel sheets to each other, and a plurality of slot portions open toward an inner circumference side and arrayed along a circumferential direction. A number Q (an integer of 1 or greater) of the caulking portions, a number S of the slot portions and a number P of the poles satisfy Q&#x2266;S and Q=P&#xd7;n/2 (where n is an integer of 1 or greater). The stator is preferably part of a motor for a compressor.

Stator, motor, and compressor

A compressor has stator of a motor is installed in a closed container, on two planes normal to the center axisof the container. On each of the planes, the stator is welded to the container at three welding points. This mounting arrangement on two planes with three welding points on each plane minimizes the amount of movement of the stator in the direction of the center axis.

Compressor arrangement with stator welded to a housing

Growing community of inventors

Uwajima, Japan

Azusa Ujihara