Scroll compressor having first and second oil grooves formed in fixed and orbiting scroll that are communicable

• US 9,133,843 B2
• Filed: 03/06/2012
• Issued: 09/15/2015
• Est. Priority Date: 03/23/2011
• Status: Active Grant

• Current Assignee: Daikin Industries Ltd
• Original Assignee: Daikin Industries Ltd
• Inventors: Tsuka, Yoshitomo, Nishide, Youhei
• Primary Examiner(s): Trieu, Theresa
• Application Number:
  US14/005,689
• Publication Number:
  US 20140010694A1
• Time in Patent Office: 1,288 Days
• Field of Search: 418 551- 556, 418/57, 418/84, 418/94, 418/97, 418 99-100
• US Class Current: 1/1
• CPC Class Codes: F04C 15/0088 Lubrication of machines or engines in general F01M
• CPC Class Codes: F04C 18/02 of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
• CPC Class Codes: F04C 18/0215 where only one member is moving
• CPC Class Codes: F04C 18/0253 Details concerning the base
• CPC Class Codes: F04C 18/16 with helical teeth, e.g. chevron-shaped, screw type for non-parallel axes of movement F04C18/48
• CPC Class Codes: F04C 23/008 Hermetic pumps
• CPC Class Codes: F04C 29/02 Lubrication of machines or engines in general F01M; Lubricant separation separation in general B01D
• 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

A scroll compressor includes a compression mechanism having a fixed scroll and an orbiting scroll. The fixed scroll includes a first end plate, an outer peripheral wall extending from an edge of the first end plate, a first oil groove, and a first wrap inside of the outer peripheral wall. The orbiting scroll includes a second end plate in sliding contact with an end of the first wrap and an end of the outer peripheral wall, a second oil groove, and a second wrap. The first oil groove is disposed on a surface of the outer peripheral wall, extends along an inner periphery of the outer peripheral wall, and is configured to receive lubricating oil at a high pressure corresponding to a discharge pressure of the compression mechanism. The second oil groove is disposed on a surface of the second end plate, and is communicatable with the first oil groove.

Claims

1. A scroll compressor, comprising:

a compression mechanism including

a fixed scroll including

a first end plate,

an outer peripheral wall extending from an edge of the first end plate,

a first oil groove, and

a first wrap extending from the first end plate inside of the outer peripheral wall; and

an orbiting scroll including

a second end plate in sliding contact with an end of the first wrap-and an end of the outer peripheral wall,

a second oil groove, and

a second wrap extending from the second end plate,

the first oil groove of the fixed scroll

disposed on a surface of the outer peripheral wall of the fixed scroll in sliding contact with the second end plate of the orbiting scroll,

extending along an inner periphery of the outer peripheral wall, and

configured to receive lubricating oil at a high pressure corresponding to a discharge pressure of the compression mechanism,

the second oil groove of the orbiting scroll

disposed on a surface of the second end plate of the orbiting scroll in sliding contact with the outer peripheral wall of the fixed scroll, and

communicatable with the first oil groove of the fixed scroll, and

the second oil groove of the orbiting scroll including

a first portion disposed along an edge of an outer periphery of the second end plate of the orbiting scroll and

a second portion bent toward a center of the orbiting scroll relative to the first portion and intermittently communicating with the first oil groove of the fixed scroll and a compression pocket.