Patent US953088A successfully refreshed from Google Patents.
Patent US3986799A successfully refreshed from Google Patents.
US3986799A
Expired / Lapsed
US
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Fluid-cooled, scroll-type, positive fluid displacement apparatus
Assignee: Arthur D Little Inc
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Filing: 1975-11-03
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Granted: 1976-10-19
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Expires: 1995-11-03
Abstract
Abstract Cooling means are provided for the stationary and orbiting scroll members of scroll-type apparatus. These cooling means comprise fluid coolant channels in the end plates and in the involute wraps of the scroll members and means to circulate a fluid coolant therethrough. In the case of the stationary scroll member the coolant may be water, oil or the like; while in the case of the orbiting scroll member the coolant is the lubricating oil used to lubricate a thrust bearing and the coupling means. The resulting effective cooling of the scroll members makes it possible to form scroll apparatus in large sizes.
Inventors
- 👤 John E. McCullough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:28
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/02; F01C1/0207; F01C1/0215; F01C1/0246; F01C21/00; F01C21/003; F01C21/06
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
257 words
In a positive fluid displacement apparatus into which fluid is introduced through an inlet port for circulation therethrough and subsequently withdrawn through a discharge port, and comprising a stationary scroll member having an end plate and an involute wrap and an orbiting scroll member having an end plate and an involute wrap, driving means for orbiting said orbiting scroll member with respect to said stationary scroll member whereby said involute wraps make moving line contacts to seal off and define at least one moving pocket of variable volume and zones of different fluid pressure, coupling means to maintain said scroll members in fixed angular relationship, means for providing an axial force to urge said involute wrap of said stationary scroll member into axial contact with said end plate of said orbiting scroll member and said involute wrap of said orbiting scroll member into axial contact with said end plate of said stationary scroll member thereby to achieve radial sealing of said pockets, and tangential sealing means for effecting tangential sealing along said moving line contacts, the improvement comprising first internal coolant circulation channel means extending throughout essentially the entire length of said involute wrap of said stationary scroll member; means to circulate a fluid coolant through said first internal coolant circulation channel means; second internal coolant circulation channel means extending throughout essentially the entire length of said involute wrap of said orbiting scroll member; and means to circulate a fluid coolant through said second internal coolant circulation channel means during the orbiting of said orbiting scroll member.
Claim 2
Dependent Claim
257 words
In a positive fluid displacement apparatus into which fluid is introduced through an inlet port for circulation therethrough and subsequently withdrawn through a discharge port, and comprising a stationary scroll member having an end plate and an involute wrap and an orbiting scroll member having an end plate and an involute wrap, driving means for orbiting said orbiting scroll member with respect to said stationary scroll member whereby said involute wraps make moving line contacts to seal off and define at least one moving pocket of variable volume and zones of different fluid pressure, coupling means to maintain said scroll members in fixed angular relationship, means for providing an axial force to urge said involute wrap of said stationary scroll member into axial contact with said end plate of said orbiting scroll member and said involute wrap of said orbiting scroll member into axial contact with said end plate of said stationary scroll member thereby to achieve radial sealing of said pockets, and tangential sealing means for effecting tangential sealing along said moving line contacts, the improvement comprising first internal coolant circulation channel means extending throughout essentially the entire length of said involute wrap of said stationary scroll member; means to circulate a fluid coolant through said first internal coolant circulation channel means; second internal coolant circulation channel means extending throughout essentially the entire length of said involute wrap of said orbiting scroll member; and means to circulate a fluid coolant through said second internal coolant circulation channel means during the orbiting of said orbiting scroll member.
Claim 3
Dependent Claim
91 words
A positive fluid displacement apparatus in accordance with claim 1 including oil-lubricated thrust bearing means engaging a surface of said end plate of said orbiting scroll and defining therewith a plurality of oil pockets, and means to supply oil to said oil pockets; and wherein said means to circulate said fluid coolant through said second internal coolant circulation channel means comprises fluid passage means extending between one of said oil pockets and said second internal coolant circulation channel means whereby said oil serves as said coolant for said orbiting scroll member.
Claim 4
Dependent Claim
56 words
A positive fluid displacement apparatus in accordance with claim 1 including first channel means defined within said end plate of said stationary scroll member and second channel means defined within said end plate of said orbiting scroll member and first and second means to circulate fluid coolant through said first and said second channel means, respectively.
Claim 5
Dependent Claim
128 words
A positive fluid displacement apparatus in accordance with claim 3 including oil-lubricated thrust bearing means engaging a surface of said end plate of said orbiting scroll and defining therewith a plurality of oil pockets, and means to supply oil to said oil pockets; and wherein said means to circulate said fluid coolant through said second internal coolant circulation channel means and said second means to circulate fluid coolant through said second channel means in said end plate of said orbiting scroll member comprise fluid passage means extending from one of said oil pockets to said second internal coolant circulation channel means and to said second channel means in said end plate of said orbiting scroll member, whereby said oil serves as said coolant for said orbiting scroll member.
Claim 6
Dependent Claim
226 words
A positive fluid displacement apparatus, comprising in combination a. a stationary scroll member having an end plate and an involute wrap; b. an orbiting scroll member having an end plate and an involute wrap; c. driving means, incorporating a main shaft and an orbiting scroll member shaft parallel therewith for orbiting said orbiting scroll member whereby said involute wraps make moving line contacts to seal off and define at least one moving pocket of variable volume and zones fo different fluid pressure, said driving means including radial compliant linking means between said main shaft and said orbiting scroll member shaft to attain tangential sealing along said moving line contacts; d. coupling means to maintain said scroll members in fixed angular relationship; e. means for providing an axial force to urge said involute wrap of said stationary scroll member into axial contact with said end plate of said orbiting scroll member and said involute wrap of said orbiting scroll member into axial contact with said end plate of said stationary scroll member thereby to achieve radial sealing of said pockets; f. stationary scroll member cooling means comprising in combination 1. first stationary involutely configured channel means within said end plate of said stationary scroll member, 2. second stationary channel means extending internally throughout essentially the entire length of said involute wrap of said stationary scroll member, and
Claim 7
Dependent Claim
226 words
A positive fluid displacement apparatus, comprising in combination a. a stationary scroll member having an end plate and an involute wrap; b. an orbiting scroll member having an end plate and an involute wrap; c. driving means, incorporating a main shaft and an orbiting scroll member shaft parallel therewith for orbiting said orbiting scroll member whereby said involute wraps make moving line contacts to seal off and define at least one moving pocket of variable volume and zones fo different fluid pressure, said driving means including radial compliant linking means between said main shaft and said orbiting scroll member shaft to attain tangential sealing along said moving line contacts; d. coupling means to maintain said scroll members in fixed angular relationship; e. means for providing an axial force to urge said involute wrap of said stationary scroll member into axial contact with said end plate of said orbiting scroll member and said involute wrap of said orbiting scroll member into axial contact with said end plate of said stationary scroll member thereby to achieve radial sealing of said pockets; f. stationary scroll member cooling means comprising in combination 1. first stationary involutely configured channel means within said end plate of said stationary scroll member, 2. second stationary channel means extending internally throughout essentially the entire length of said involute wrap of said stationary scroll member, and
Claim 8
Dependent Claim
80 words
means to circulate a fluid coolant through said first and second stationary channel means; g. orbiting scroll member cooling means comprising in combination 1. first orbiting involutely configured channel means within said end plate of said orbiting scroll member, 2. second orbiting channel means extending internally throughout essentially the entire length of said involute wrap of said orbiting scroll member, and 3. means to circulate a fluid coolant through said first and second orbiting channel means; and h. housing means.
Claim 9
Dependent Claim
80 words
means to circulate a fluid coolant through said first and second stationary channel means; g. orbiting scroll member cooling means comprising in combination 1. first orbiting involutely configured channel means within said end plate of said orbiting scroll member, 2. second orbiting channel means extending internally throughout essentially the entire length of said involute wrap of said orbiting scroll member, and 3. means to circulate a fluid coolant through said first and second orbiting channel means; and h. housing means.
Claim 10
Dependent Claim
55 words
A positive fluid displacement apparatus in accordance with claim 5 wherein said end plates of said stationary and said orbiting scroll members are each formed as two engageable plate members, one of which has an involute groove; whereby when they are held in engagement they define said first stationary and said first orbiting channel means.
Claim 11
Dependent Claim
35 words
A positive fluid displacement apparatus in accordance with claim 5 wherein said second stationary and said second orbiting channel means comprise at least two parallel channels extending throughout essentially the entire lengths of said wraps.
Claim 12
Dependent Claim
67 words
A positive fluid displacement apparatus in accordance with claim 5 wherein said means to circulate a fluid coolant through said first and second stationary channel means comprise first fluid conduit means in fluid communication with said first channel means for introducing fluid thereinto and withdrawing therefrom and second fluid conduit means in fluid communication with said second channel means for introducing fluid thereinto and withdrawing fluid therefrom.
Claim 13
Dependent Claim
58 words
A positive fluid displacement apparatus in accordance with claim 5 wherein said end plates of said stationary and said orbiting scroll members have involute grooves corresponding in configuration to said involute wraps of said stationary and said orbiting scroll members and said involute wraps are positioned in said involute grooves and sealed therein to form said scroll members.
Claim 14
Dependent Claim
59 words
A positive fluid displacement apparatus in accordance with claim 5 including compliance/sealing means associated with each of said involute wraps, each compliance/sealing means comprising in combination a seal element of the same involute configuration as its associated wrap through which said axial contact is effected, and force applying means for actuating said seal element to effect said radial sealing.
Claim 15
Dependent Claim
32 words
A positive fluid displacement apparatus in accordance with claim 5 including sealing means within said housing for isolating said at least one moving pocket from the remaining volume defined within said housing.
Claim 16
Dependent Claim
32 words
A positive fluid displacement apparatus in accordance with claim 5 wherein the surfaces of said involute wraps and of said end plates which make sealing contacts are formed of a self-lubricating surface.
Claim 17
Dependent Claim
32 words
A positive fluid displacement apparatus in accordance with claim 12 wherein said self-lubricating surface comprises a separate layer of a self-lubricating material adhered to said involute wraps and to said end plates.
Claim 18
Dependent Claim
121 words
A positive fluid displacement apparatus in accordance with claim 5 wherein said means for providing said axial force comprises oil-lubricated thrust bearing means engaging a surface of said end plate of said orbiting scroll and defining therewith a plurality of oil pockets, and means to supply oil to said oil pockets; and wherein said means to circulate a fluid coolant through said first and second orbiting channel means comprise inlet fluid passage means extending from one of said oil pockets to said first and said second orbiting channel means and discharge fluid passage means extending through said end plate of said orbiting scroll member from said first and said second orbiting channel means to an oil sump within said housing means.
Claim 19
Dependent Claim
41 words
A positive fluid displacement apparatus in accordance with claim 14 wherein said means to supply oil to said oil pockets comprises conduit means connecting said oil pockets with said oil sump and pump means to force oil through said conduit means.
Claim 20
Dependent Claim
33 words
A positive fluid displacement apparatus in accordance with claim 14 including heat exchange means within said pump to circulate an externally supplied coolant in indirect heat exchange with oil in said oil sump.
Claim 21
Dependent Claim
19 words
A positive fluid displacement apparatus in accordance with claim 14 wherein the width of said one of said pockets
Claim 22
Dependent Claim
41 words
A positive fluid displacement apparatus in accordance with claim 5 wherein said radial compliant linking means includes means to provide a centripetal radial force adapted to oppose at least a fraction of the centrifugal force acting upon said orbiting scroll member.
Claim 23
Dependent Claim
49 words
A positive fluid displacement apparatus in accordance with claim 18 wherein said radial compliant linking means is a swing-link and said means to provide said centripetal radial force comprises counterweight means attached to said swing-link and further wherein said driving means includes counterweight means attached to said main shaft.
Claim 24
Dependent Claim
37 words
A positive fluid displacement apparatus in accordance with claim 19 including damper means for making friction contact between facing surfaces of said counterweight means attached to said swing-link and said counterweight means attached to said main shaft.
Claim 25
Dependent Claim
117 words
A positive fluid displacement apparatus in accordance with claim 20 including wear control means to control and adjust the wear on the surfaces of said involute wraps of said stationary and said orbiting scroll members, said wear control means comprising in combination an extension piece having an opening therethrough affixed to said counterweight means attached to said drive shaft, a hard stop affixed to said extension piece and engageable with the edge surface of said counterweight means attached to said swing link, screw means extending through said opening in said extension piece and being affixed to said counterweight means attached to said swing-link, and adjustable spring means affixed to said screw means bearing on said extension piece.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |