EP0091544A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Movement synchronizing means for scroll-type fluid displacement apparatus
Assignee: Sanden Corp
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Filing: 1981-03-18
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Granted: —
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Expires: 2001-03-18
Abstract
Abstract A scroll-type of fluid displacement apparatus is disclosed. The apparatus includes a housing having a fluid inlet and a fluid outlet port. A fixed scroll member is fixedly disposed with respect to the housing and has an end surface from which a first wrap extends. An orbiting scroll member is movably disposed within the housing and has an end plate from which a second wrap extends. The first and second wraps interfit at an angular offset to make a plurality of line contacts which define at least one pair of sealed off fluid pockets. A drive mechanism is connected to the orbiting scroll member to transmit orbital motion thereto. A rotation preventing means prevents rotation of orbiting scroll member during orbital motion of the orbiting scroll member and is comprised of fixed ring and a sliding ring. The sliding ring is slidably connected to the fixed ring and also the second end plate by keys and keyways. A plurality of pockets is formed through the sliding ring and bearing elements are retained within the pockets for transmitting axial thrust load from the orbiting scroll member to the fixed ring.
Inventors
- 👤 Masaharu Hiraga
- 👤 Kiyoshi Miyazawa
- 👤 Kiyoshi Terauchi
- 👤 Seiichi Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 21:18
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/003; F01C1/00; F01C1/02; F01C1/0207; F01C1/0215; F01C17/00; F01C17/06; F01C17/063; F01C21/008; F04; F04C; F04C29/00; F04C29/0042; F04C29/005; F04C29/0057; F04C2240/00; F04C2240/80; F04C2240/807
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
256 words
A scroll-type fluid displacement apparatus including a housing having a fluid inlet port and a fluid outlet port, a fixed scroll member fixedly disposed relative to said housing and having an end surface from which first wrap means extends into the interior of said housing, an orbiting scroll member having end plate means from which second wrap means extends, said first and second wrap means interfitting at an angular offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets, a drive mechanism connected to said orbiting scroll member for transmitting orbital motion to said orbiting scroll member, and rotation preventing means for preventing rotation of said orbiting scroll member during the orbital motion of said orbiting scroll member, whereby said fluid pockets change volume by the orbital motion of said orbiting scroll member, wherein said rotation preventing means comprise a fixed ring disposed within said housing, spaced from and opposed to said end plate means, and a sliding ring which is slidably connected to said fixed ring by keys and keyways, thereby to permit relative motion in a first direction parallel with a diameter, and slidably connected to said end plate means by keys and keyways, thereby to permit relative motion in a second direction perpendicular to said first direction,,said sliding ring has formed therein a plurality of pockets which penetrate axially and are circumferentially spaced, and said pockets retain bearing elements for transmitting an axial thrust load from said orbiting scroll member to said fixed ring.
Claim 2
Dependent Claim
256 words
A scroll-type fluid displacement apparatus including a housing having a fluid inlet port and a fluid outlet port, a fixed scroll member fixedly disposed relative to said housing and having an end surface from which first wrap means extends into the interior of said housing, an orbiting scroll member having end plate means from which second wrap means extends, said first and second wrap means interfitting at an angular offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets, a drive mechanism connected to said orbiting scroll member for transmitting orbital motion to said orbiting scroll member, and rotation preventing means for preventing rotation of said orbiting scroll member during the orbital motion of said orbiting scroll member, whereby said fluid pockets change volume by the orbital motion of said orbiting scroll member, wherein said rotation preventing means comprise a fixed ring disposed within said housing, spaced from and opposed to said end plate means, and a sliding ring which is slidably connected to said fixed ring by keys and keyways, thereby to permit relative motion in a first direction parallel with a diameter, and slidably connected to said end plate means by keys and keyways, thereby to permit relative motion in a second direction perpendicular to said first direction,,said sliding ring has formed therein a plurality of pockets which penetrate axially and are circumferentially spaced, and said pockets retain bearing elements for transmitting an axial thrust load from said orbiting scroll member to said fixed ring.
Claim 3
Dependent Claim
13 words
An apparatus as claimed in claim 1, wherein said bearing elements comprise balls.
Claim 4
Dependent Claim
20 words
An apparatus as claimed in claim 1, wherein the pockets are located along generally the same circumference as said keys.
Claim 5
Dependent Claim
31 words
An apparatus as claimed in claim 3, wherein the centers of said pockets are located substantially along a circumferential line passing through the center of said keys in a radial direction.
Claim 6
Dependent Claim
22 words
An apparatus as claimed in claim 4, wherein said circumferential line is located adjacent the outer perimeter of said orbiting scroll member.
Claim 7
Independent Claim
32 words
An apparatus as claimed in any one of the preceding claims, wherein said keys have radially extending edges transverse to their major faces, said edges being substantially flat along their entire extent.
Claim 8
Dependent Claim
17 words
An apparatus as claimed in claim 6, wherein said keys are formed integral with said sliding ring.
Claim 9
Independent Claim
33 words
An apparatus as claimed in any one of the preceding claims, wherein said fixed ring is formed discrete from said housing, and including means for fixedly securing said fixed ring within said housing.
Claim 10
Dependent Claim
254 words
A fluid displacement apparatus comprising: a housing having a fluid inlet port and a fluid outlet port; a fixed scroll member fixedly disposed with respect to said housing and having first end surface from which first wrap means extend into the interior of said housing; an orbiting scroll member movably disposed within said housing and having end plate means from which second wrap extends, said first and second wrap means interfitting at an angular offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets; drive means for imparting orbiting motion to orbiting scroll member; rotation preventing means for preventing rotation of said orbiting scroll member during the orbital motion of said orbiting scroll member, said rotation preventing means including a fixed ring fixedly disposed within said housing spaced from and opposed to said end plate means and a sliding ring slidably connected to said fixed ring by keys and keyways for permitting motion in a first direction of a diameter and slidably connected to said end plate means by keys and keyways permitting motion in a second direction of a diameter perpendicular to said first direction; a plurality of circumferentially spaced pockets formed axially through said sliding ring; a bearing element received within each of said pockets for transmitting axial thrust load from said orbiting scroll member to said fixed ring, said pockets being located along generally the same circumference as said keys and being adjacent to the outer perimeter of said orbiting scroll member.
Claim 11
Dependent Claim
254 words
A fluid displacement apparatus comprising: a housing having a fluid inlet port and a fluid outlet port; a fixed scroll member fixedly disposed with respect to said housing and having first end surface from which first wrap means extend into the interior of said housing; an orbiting scroll member movably disposed within said housing and having end plate means from which second wrap extends, said first and second wrap means interfitting at an angular offset to make a plurality of line contacts to define at least one pair of sealed off fluid pockets; drive means for imparting orbiting motion to orbiting scroll member; rotation preventing means for preventing rotation of said orbiting scroll member during the orbital motion of said orbiting scroll member, said rotation preventing means including a fixed ring fixedly disposed within said housing spaced from and opposed to said end plate means and a sliding ring slidably connected to said fixed ring by keys and keyways for permitting motion in a first direction of a diameter and slidably connected to said end plate means by keys and keyways permitting motion in a second direction of a diameter perpendicular to said first direction; a plurality of circumferentially spaced pockets formed axially through said sliding ring; a bearing element received within each of said pockets for transmitting axial thrust load from said orbiting scroll member to said fixed ring, said pockets being located along generally the same circumference as said keys and being adjacent to the outer perimeter of said orbiting scroll member.
Claim 12
Dependent Claim
30 words
An apparatus as claimed in claim 9, wherein the centers of said pockets are located along a circumferential line passing through the center of said keys in a radial direction.
Claim 13
Dependent Claim
38 words
An apparatus as claimed in claim 9 or 10, wherein said keys are formed integral with said sliding ring and have radially extending edges transverse to their major faces, said edges being substantially flat along their entire extent.
References Cited (Backward Citations)
No citation records indexed.
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