Patent EP0052234A1 successfully refreshed from Google Patents.
EP0052234A1
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EP
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Scroll type fluid displacement apparatus with oil separating mechanism
Assignee: Sanden Corp
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Filing: 1981-10-15
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Granted: —
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Expires: 2001-10-15
Abstract
Abstract A scroll type fluid displacement apparatus including a housing (10) divided into a discharge chamber (32) and a suction chamber (33) is disclosed. A fixed scroll member (25) is disposed within the housing (10) and comprises a first end plate (251) and a first wrap (252) which extends from one end surface of the first end plate (251). The discharge chamber (32) is formed adjacent the fixed scroll member (25) on the side of the first end plate (251) opposite the side thereof from which the first wrap (252) extends. An annular shaped dividing wall (253) is formed at the end surface of the first end plate (251) and extends into the interior of the discharge chamber (32). The discharge chamber (32) is partitioned into two chambers (321, 322) by the dividing wall (253). At least one hole (259) is formed through the dividing wall (253) to connect the two chambers (321, 322) of the discharge chamber (32). The dividing wall (253) is provided with a deflecting member (361, 361', 45) for bending the fluid flow of the discharging fluid. At least one oil separating member (37, 38, 46) is disposed in a fluid passageway upstream of a fluid outlet port from the housing. The separation of lubricating oil from the discharging fluid is promoted and the outflow of the oil is minimized.
Inventors
- 👤 Atsushi Mabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 01:40
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/02; F04C29/026; Y; Y10; Y10S; Y10S418/00; Y10S418/01
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
316 words
A scroll type fluid displacement apparatus including a housing (10) having a fluid inlet port (34) and a fluid outlet port (35), a fixed scroll member (25) fixedly disposed within said housing (10) and having a first end plate (251) from which a first involute wrap (252) extends, an orbiting scroll member (26) having a second end plate (261) from which a second involute wrap (262) extends, said first and second wraps (252, 262) interfitting at an angular and radial offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets, driving means (13, 15) for effecting the orbital motion of said orbiting scroll member (26) while the rotation of said orbiting scroll member (26) prevented, whereby said fluid pockets change volume by the orbital motion of said orbiting scroll member (26), characterized by said housing (10) having a discharge chamber (32) adjacent said fixed scroll member (25) on the side of said first end plate (251) opposite the side thereof from which said first wrap (252) extends, said first end plate (251) having a discharge bore (258) therethrough communicating between said fluid pocket near the center of said first wrap (252) and said discharge chamber (32), a dividing wall (253) in said discharge chamber (32) for partitioning said discharge chamber into two partition chambers (321, 322), said dividing wall (253) having at least one hole (259) for providing fluid communication between said two partition chambers (321, 322), deflecting means (36, 361,' 45) for bending the direction of flow of the fluid discharging from said fluid pockets, and at least one oil separating member for separating lubricating oil from the fluid discharging from said fluid pockets, said at least one separating member being disposed in a fluid passageway formed by said dividing wall (253), said deflecting means (36, 361', 45) and the inner surface of said housing (10).
Claim 2
Dependent Claim
316 words
A scroll type fluid displacement apparatus including a housing (10) having a fluid inlet port (34) and a fluid outlet port (35), a fixed scroll member (25) fixedly disposed within said housing (10) and having a first end plate (251) from which a first involute wrap (252) extends, an orbiting scroll member (26) having a second end plate (261) from which a second involute wrap (262) extends, said first and second wraps (252, 262) interfitting at an angular and radial offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets, driving means (13, 15) for effecting the orbital motion of said orbiting scroll member (26) while the rotation of said orbiting scroll member (26) prevented, whereby said fluid pockets change volume by the orbital motion of said orbiting scroll member (26), characterized by said housing (10) having a discharge chamber (32) adjacent said fixed scroll member (25) on the side of said first end plate (251) opposite the side thereof from which said first wrap (252) extends, said first end plate (251) having a discharge bore (258) therethrough communicating between said fluid pocket near the center of said first wrap (252) and said discharge chamber (32), a dividing wall (253) in said discharge chamber (32) for partitioning said discharge chamber into two partition chambers (321, 322), said dividing wall (253) having at least one hole (259) for providing fluid communication between said two partition chambers (321, 322), deflecting means (36, 361,' 45) for bending the direction of flow of the fluid discharging from said fluid pockets, and at least one oil separating member for separating lubricating oil from the fluid discharging from said fluid pockets, said at least one separating member being disposed in a fluid passageway formed by said dividing wall (253), said deflecting means (36, 361', 45) and the inner surface of said housing (10).
Claim 3
Dependent Claim
94 words
A scroll type fluid displacement apparatus of claim 1, characterized in that said deflecting means (36, 361', 45) is comprised of a generally arc shaped plate disposed in an area between an interior surface of said housing (10) and an exterior surface of said dividing wall (253), said arc shaped plate being located in said area such that fluid discharging through said at least one hole (259) in said dividing wall (253) moves in a direction away from said fluid outlet port (35) and thereafter in a direction toward said fluid outlet port (35).
Claim 4
Dependent Claim
135 words
A scroll type fluid displacement apparatus of claim 1 or 2, characterized in that two angularly spaced holes (259) are formed through said dividing wall (253), one of said last-mentioned holes (259) being disposed to one side of said fluid outlet port (35) and the other of said last-mentioned holes (259) being disposed to the other side thereof, said arc shaped plate having a pair of outlets (364) through which the fluid flows as it changes direction, one of said pair of outlets (364) being disposed angularly further away from said fluid outlet port (35) than a first of said holes (259) through said dividing wall (253) and the other of said pair of outlets being disposed angularly further away from said fluid outlet port than the other of said holes through said dividing wall.
Claim 5
Dependent Claim
26 words
A scroll type fluid displacement apparatus of one of claims 1, 2 or 3, characterized in that said dividing wall (253) has a generally annular configuration.
Claim 6
Dependent Claim
29 words
A scroll type fluid displacement apparatus of one of claims 1 - 4, characterized in that said dividing wall (253) is formed integral with said first end plate (251).
Claim 7
Dependent Claim
53 words
A scroll type fluid displacement apparatus of one of claims 1 to 4, characterized by a flange member (363, 363', 46) disposed in the area between the inner surface of said housing and the outer surface of said dividing wall for preventing the blow back of oil separated from the fluid being discharged.
Claim 8
Dependent Claim
59 words
A scroll type fluid displacement apparatus according to one of claims 1 - 6, characterized in that said dividing wall (253) has a plurality of thickened wall portions (254), and a tapped hole (255) formed axially in each of said thickened wall portions (254) into which screws are threaded to attach said dividing wall (253) to said housing (10).
Claim 9
Dependent Claim
76 words
A scroll type fluid displacement apparatus of claim 7, characterized in that fitting portion (362) extends from either end of said arc shaped plate (361), and has an inner surface mating with the outer surface of said thickened portion (254), said arc shaped plate (361) being fixedly disposed above the outer surface of said dividing wall (253) by fitting said fitting portions (362) about adjacent ones of said thickened portions (254) of said dividing wall (253).
Claim 10
Dependent Claim
29 words
A scroll type fluid displacement apparatus of claim 8, characterized in that said arc shaped plate (361), said fitting portion (362) and said flange member (363) are integrally formed.
Claim 11
Dependent Claim
72 words
A scroll type fluid displacement apparatus of one of claims 2 - 9, characterized by a flat plate (411) disposed between an end surface of said dividing wall (253) and an inner surface of said housing (10), said arc shaped plate (361') extending from said flat plate (411) and a flange member (363') extending from said flat plate (411) for preventing the blow back of oil separated from the fluid being discharged.
Claim 12
Dependent Claim
30 words
A scroll type fluid displacement apparatus of one of claims 2 - 10, characterized in that said arc shaped plate (45) is formed integral with said dividing wall projection (254).
Claim 13
Dependent Claim
40 words
A scroll type fluid displacement apparatus according to one of claims 6 - 11, characterized in that said flange member (46) is formed integral with said housing (10, 12) or with said annular wall (253) and said housing (10, 12).
Claim 14
Dependent Claim
33 words
A scroll type fluid displacement apparatus according to one of claims 1 to 12, characterized in that an oil separating member is disposed between the hole (259) and said fluid outlet port (35).
Claim 15
Dependent Claim
71 words
A scroll type fluid displacement apparatus according to one of claims 1 - 13, characterized in that a second oil passageway is formed through a front end plate of the housing and communicates with a suction chamber and a seal cavity of the driving means and a connecting member is disposed between said first and second oil passageways whereby separated oil is transferred from said discharge chamber to said seal cavity.
References Cited (Backward Citations)
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