Hermetically sealed compressor and method of manufacturing the same

• US 7,473,081 B2
• Filed: 03/16/2006
• Issued: 01/06/2009
• Est. Priority Date: 03/17/2005
• Status: Active Grant

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: Nishikawa, Takahiro, Kogure, Yoshihisa, Hara, Masayuki, Ogasawara, Hirotsugu
• Primary Examiner(s): Trieu; Theresa
• Application Number:
  US11/378,753
• Publication Number:
  US 20060210407A1
• Time in Patent Office: 1,027 Days
• Field of Search: 418/60, 418/63, 418/88, 418/94, 418/98, 418/249, 418/1, 184/6.18, 298/880.25
• US Class Current: 418/1
• CPC Class Codes: F04C 23/008 Hermetic pumps
• CPC Class Codes: F04C 29/023 Lubricant distribution through a hollow driving shaft F04C29/025 takes precedence
• CPC Class Codes: F04C 29/028 Means for improving or restricting lubricant flow

Abstract

In a hermetically sealed compressor 100 including a rotary compressing element (4) having at least one cylinder (43A, 43B), and a roller (45) provided to the cylinder so as to be freely eccentrically rotatable, an electrically-driven element (2) for driving the roller (45) and a hermetically sealed container in which the rotary compressing element and the electrically-driven element are accommodated, oil (8) being stocked in the hermetically sealed container (1), the oil (8) in the hermetically sealed container (1) is injected into the compression chamber (43) when refrigerant is sucked into the compression chamber (43) of the cylinder.

Claims

1. A method of manufacturing a hermetically sealed compressor comprising an electrically driven element having a rotating shaft, a rotary compressing element driven by said rotating shaft comprising a cylinder having a compression chamber therein, a primary and secondary bearing member supporting said cylinder and said rotating shaft, an inlet to provide refrigerant to said compression chamber, a hermetically sealed container for receiving the electrically-driven element, the primary and secondary bearing members and the compressing element therein, an oil pool in said hermetically sealed container, and a conduit for the passage of oil from said pool to an annular space of said primary bearing member along an outer peripheral surface of said rotating shaft at a rubbing face of said bearing member against said rotating shaft, comprising the steps of:

forming a through hole in said primary bearing member extending from a surface of said primary bearing member at said annular space to an outer peripheral surface of said primary bearing member to form an oil path from said annular space to the compression chamber when refrigerant is sucked into the compression chamber; and

inserting said primary bearing member into said hermetically sealed container while gripping said primary bearing member and aligning an open end of the through hole at the outer peripheral surface of the primary bearing member with a section of said hermetically sealed container to be welded from an outside of said hermetically sealed container; and

welding said section to close the open end of said through hole.

2. The hermetically sealed compressor manufacturing method according to claim 1, further comprising a step of providing a positioning member for positioning the open end of the through hole at the outer peripheral surface side to the position corresponding to the welding place.