US4068683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High energy loss device
Assignee: IMI Critical Engineering LLC
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Filing: 1975-09-09
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Granted: 1978-01-17
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Expires: 1995-09-09
Abstract
Abstract A more compact high energy loss device is provided having a series of uniquely formed multiturn labyrinth assemblies which reduce the pressure of a fluid flowing therethrough. The inlet of the labyrinth assemblies is formed according to a substantially circular configuration to have a predetermined inlet area while the outlet is formed according to a substantially scalloped configuration to provide an outlet area greater than the inlet area. The scalloped configuration of the outlet yields an outlet area which is also greater than if the outlet were of circular configuration. The scalloped outlet configuration also makes the labyrinth assembly less susceptible to circumferential thermal stresses resulting from high temperature fluids passing through the device producing high temperature inlet conditions and low temperature outlet conditions.
Inventors
- 👤 Richard E. Self
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/02; F16K; F16K47/00; F16K47/08; F16L55/027; F16L55/02781; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734; Y10T137/86759; Y10T137/86791
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
128 words
A high energy loss fluid flow controlling device comprising: a plurality of members having aligned scalloped outer peripheries and being joined together into a rigid structure having a scalloped outer periphery continuously extending along the height of the rigid structure, said rigid structure having a series of high energy loss paths for fluid flow formed by said plurality of members; inlet means centrally cut in each of said members according to a first geometrical configuration to define an inlet area for conducting fluid to the series of paths formed in said rigid structure by said plurality of members; and scalloped outlet means formed along the entire scalloped outer periphery of said rigid structure to define a continuous scalloped outlet area along the entire height of said rigid structure.
Claim 2
Dependent Claim
128 words
A high energy loss fluid flow controlling device comprising: a plurality of members having aligned scalloped outer peripheries and being joined together into a rigid structure having a scalloped outer periphery continuously extending along the height of the rigid structure, said rigid structure having a series of high energy loss paths for fluid flow formed by said plurality of members; inlet means centrally cut in each of said members according to a first geometrical configuration to define an inlet area for conducting fluid to the series of paths formed in said rigid structure by said plurality of members; and scalloped outlet means formed along the entire scalloped outer periphery of said rigid structure to define a continuous scalloped outlet area along the entire height of said rigid structure.
Claim 3
Dependent Claim
45 words
A high energy loss device as set forth in claim 1 wherein said inlet means includes a substantially circular bore extending through said plurality of members to provide a series of openings for fluid flow into the high energy loss path of said rigid structure.
Claim 4
Dependent Claim
35 words
A high energy loss device as set forth in claim 2 wherein said plurality of members includes a series of disks having abutting surfaces and forming high energy loss paths therebetween for fluid flow therealong.
Claim 5
Dependent Claim
93 words
A high energy loss device as set forth in claim 3 wherein said series of disks includes: a first disk having a plurality of openings formed therein according to a first predetermined pattern; a second disk abutting said first disk and having a plurality of openings formed therein according to a second predetermined pattern so as to overlap the openings of said first predetermined pattern to allow the fluid to flow back and forth between said first and second disk as the fluid flows between the inlet and the outlet of said device.
Claim 6
Dependent Claim
42 words
A high energy loss device as set forth in claim 4 wherein said series of disks further includes a pair of blank plates between which said first and second disks are stacked to prevent leakage from said first and said second disk.
Claim 7
Dependent Claim
36 words
A high energy loss device as set forth in claim 3 including a plug member movable within the bore of said rigid structure to vary the inlet area exposed to fluid flow through said rigid structure.
Claim 8
Independent Claim
179 words
A device for providing high energy loss in fluids flowing therethrough comprising: a rigid structure having a series of members joined together to have adjoining faces, each of said series of members having a central opening and a scalloped outer periphery, the central openings and scalloped outer peripheries of each member being aligned with each other in the rigid structure to provide a continuous central opening and a continuous scalloped outer periphery along the entire height of said rigid structure; a series of tortuous paths for fluid flow therealong being formed between at least a pair of the adjoining faces of said series of members between the central opening and the scalloped outer periphery of the rigid structure; inlet means formed in the aligned central opening of the rigid structure to provide an area for inleting fluid into said series of tortuous paths; and scalloped outlet means formed in the scalloped outer periphery of said rigid structure to provide an outlet area along the scalloped periphery of said rigid structure for exhausting fluid from said series of tortuous paths.
Claim 9
Independent Claim
179 words
A device for providing high energy loss in fluids flowing therethrough comprising: a rigid structure having a series of members joined together to have adjoining faces, each of said series of members having a central opening and a scalloped outer periphery, the central openings and scalloped outer peripheries of each member being aligned with each other in the rigid structure to provide a continuous central opening and a continuous scalloped outer periphery along the entire height of said rigid structure; a series of tortuous paths for fluid flow therealong being formed between at least a pair of the adjoining faces of said series of members between the central opening and the scalloped outer periphery of the rigid structure; inlet means formed in the aligned central opening of the rigid structure to provide an area for inleting fluid into said series of tortuous paths; and scalloped outlet means formed in the scalloped outer periphery of said rigid structure to provide an outlet area along the scalloped periphery of said rigid structure for exhausting fluid from said series of tortuous paths.
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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |