Patent US3849024A successfully refreshed from Google Patents.
US3849024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vortex blower
Assignee: Hitachi Ltd
•
Filing: 1973-06-01
•
Granted: 1974-11-19
•
Expires: 1993-06-01
Abstract
Abstract A vortex blower comprising a rotor unit provided with vanes disposed in an annular groove and a stator unit provided with an annular groove corresponding to that in said rotor unit, said both units being arranged in opposition to each other, said groove in said stator unit being provided with an inlet opening and an outlet opening, wherein the fluid is moved with rotation of said rotor unit such that said fluid will swirl in the annular grooves in said rotor and stator units and be discharged out from said outlet opening, and further characterized in that partitioning vanes adapted to prevent reverse flow of the fluid are provided in the annular groove in said stator unit.
Inventors
- 👤 T Masai
- 👤 T Atago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:41
CPC Classifications
F; F04; F04D; F04D23/00; F04D23/008
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
205 words
A vortex blower comprising a rotor unit provided with a plurality of vanes arranged at fixed intervals in an annular groove, half circular in sectional shape, formed in said rotor unit, and a stator unit also formed with a similar annular groove half circular in sectional shape and designed to serve as an air chamber, the last-said groove being provided at suitable locations thereof with an inlet opening, an outlet opening and a land portion separating said both openings, said both units being arranged in opposed relation and suitably spaced-apart relative to each other, wherein by rotating said rotor a vortex flow is produced in the grooves in said rotor and stator units and is discharged out from said outlet opening, and further characterized in that a plurality of partitioning vanes are provided in the air chamber formed in said stator unit, wherein said partitioning vanes are arranged such that the intersection betwen said vanes and the inner edge of said air chamber will be located further forward in the direction of advancement of the fluid than the corresponding intersection of the straight line connecting the center of said air chamber with the intersection between said vanes and the outer edge of said air chamber.
Claim 2
Dependent Claim
205 words
A vortex blower comprising a rotor unit provided with a plurality of vanes arranged at fixed intervals in an annular groove, half circular in sectional shape, formed in said rotor unit, and a stator unit also formed with a similar annular groove half circular in sectional shape and designed to serve as an air chamber, the last-said groove being provided at suitable locations thereof with an inlet opening, an outlet opening and a land portion separating said both openings, said both units being arranged in opposed relation and suitably spaced-apart relative to each other, wherein by rotating said rotor a vortex flow is produced in the grooves in said rotor and stator units and is discharged out from said outlet opening, and further characterized in that a plurality of partitioning vanes are provided in the air chamber formed in said stator unit, wherein said partitioning vanes are arranged such that the intersection betwen said vanes and the inner edge of said air chamber will be located further forward in the direction of advancement of the fluid than the corresponding intersection of the straight line connecting the center of said air chamber with the intersection between said vanes and the outer edge of said air chamber.
Claim 3
Dependent Claim
72 words
A vortex blower as claimed in claim 1, wherein arrangement is made such that the angle made by said vanes and the straight radial line extending from the center (0) of the air chamber and passing the intersection between the inner edge of said air chamber and said vanes will become smaller gradually as the distance from the inlet opening increases (in other words, as the distance to the outlet opening decreases).
Claim 4
Dependent Claim
45 words
A vortex blower as claimed in claim 1, wherein said vanes are arranged such that the pitch between a vane and the succeeding one will become smaller as the distance from the inlet opening increases (and hence as the distance to the outlet opening decreases).
Claim 5
Dependent Claim
33 words
A vortex blower as claimed in claim 1, wherein each said vane is provided with cut-out portions at its ends on both outer edge side and inner edge side of the air chamber.
Claim 6
Dependent Claim
43 words
A vortex blower as claimed in claim 4, wherein the depth of the cut-out portion provided on the outer edge side of the air chamber is greater than the depth of the cut-out portion provided on the inner edge side of said chamber.
Claim 7
Dependent Claim
45 words
A vortex blower as claimed in claim 2, wherein vane arrangement is made such that the pitch between a vane and the succeeding one will become smaller as the distance from the inlet opening increases (and hence as the distance to the outlet opening decreases).
Claim 8
Dependent Claim
33 words
A vortex blower as claimed in claim 6, wherein each said vane is provided with cut-out portions at its ends on both inner edGe side and outer edge side of the air chamber.
Claim 9
Dependent Claim
40 words
A vortex blower as claimed in claim 7, wherein the depth of the cut-out portion provided on the outer edge side of the air chamber is greater than the depth of the cut-out portion provided on the inner edge side.
Claim 10
Dependent Claim
51 words
A vortex blower as claimed in claim 6, wherein arrangement is made such that the angle made by the intersection between the inlet opening and the air chamber inner edge of the vane closest to said inlet opening relative to the center of the air chamber will be 50* to 70*.
Claim 11
Dependent Claim
128 words
A vortex blower comprising: rotor means having an annular rotor groove therein, a plurality of rotor vanes arranged in said annular groove, stator means having an annular stator groove therein with radially inner and outer edges, said stator means and said rotor means being arranged to define a fluid flow chamber between said rotor and said stator grooves, fluid inlet and outlet means communicating directly with the fluid flow chamber, a plurality of partitioning vanes arranged within said stator groove and extending between the radially inner and outer edges, each of said partitioning vanes intersecting the radially inner edge of said stator groove at a location closer to the fluid outlet means than the intersection of each said vane with the radially outer edge of said stator groove.
Claim 12
Dependent Claim
128 words
A vortex blower comprising: rotor means having an annular rotor groove therein, a plurality of rotor vanes arranged in said annular groove, stator means having an annular stator groove therein with radially inner and outer edges, said stator means and said rotor means being arranged to define a fluid flow chamber between said rotor and said stator grooves, fluid inlet and outlet means communicating directly with the fluid flow chamber, a plurality of partitioning vanes arranged within said stator groove and extending between the radially inner and outer edges, each of said partitioning vanes intersecting the radially inner edge of said stator groove at a location closer to the fluid outlet means than the intersection of each said vane with the radially outer edge of said stator groove.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |