Stator

A stator, comprising:

• a substantially cylindrical stator core, which has a fixing ridge provided with a fastening portion for fixing, and which is positioned so that an axial center of the stator extends substantially horizontally, wherein
• the fixing ridge is formed at a circumferential location of a cylindrical main body portion of the stator core, and protrudes radially outward from a main body outer peripheral surface, which is an outer peripheral surface of the main body portion, along an entire axial length of the main body portion, and
• the fixing ridge which satisfies the following conditions is a target ridge:
• an uppermost part of a ridge outer peripheral surface, which is an outer peripheral surface of the fixing ridge, is located at the same height as, or lower than a horizontal plane extending in an uppermost part of the main body outer peripheral surface, and the uppermost part of the ridge outer peripheral surface does not correspond to a boundary with the main body outer peripheral surface, the stator further comprising:
• sealing members, which are respectively attached to both axial ends of the stator core so as to be positioned on a side of the uppermost part of the main body outer peripheral surface with respect to the target ridge, and which respectively form sealing walls that have a height equal to or higher than a horizontal plane extending in the uppermost part of the ridge outer peripheral surface, wherein
• a recess surrounded by the ridge outer peripheral surface, the main body outer peripheral surface, and the sealing walls serves as a refrigerant reservoir recess for storing a refrigerant.