US3761203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring-type fan
Assignee: ELEKTRISCHE GERAETE MBH GES
•
Filing: 1971-11-01
•
Granted: 1973-09-25
•
Expires: 1991-11-01
Abstract
Abstract A ring-type fan or compressor comprises an impeller ring having a propeller-forming hub and surrounds an electric motor to which the fan impeller is coupled. The motor extends axially to both sides of the plane of the impeller ring which surrounds the fan and is rotatable in a housing in which the intake passage communicates with the motor chamber on the opposite side of the motor structure so that the displaced gases are initially drawn through the motor chamber to cool the motor. An axial blower may be located within the housing and is driven by the motor within the annular impeller.
Inventors
- 👤 W Neidhardt
- 👤 O Reschauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:42
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/06; F04D25/0606; F04D23/00; F04D23/008; F04D25/08; F04D25/082; F04D29/00; F04D29/58; F04D29/5806
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
205 words
A ring-type blower, comprising: an electric motor having a stator and a rotor rotatable relative to said stator about an axis; an impeller connected with said motor and having an annulus forming a blade crown concentrically surrounding said motor; and a housing surrounding said motor and said annulus and defining a motor chamber wholly receiving said stator and rotor of said motor and axially extending to opposite sides of the blade crown of said annulus, said stator and said rotor being so constructed and arranged as to be in direct contact with fluid traversing said motor chamber, an intake opening communicating with said motor chamber to one axial side of said motor, a ring-type blower chamber receiving said annulus around said motor chamber, and an axially extending passage communicating between said blower chamber and said motor chamber and opening into the latter at the opposite side of said motor whereby a fluid medium is drawn through said opening and said motor chamber between said stator and said rotor in one direction and is then fed through said passage to said blower chamber in the opPosite axial direction, said housing having generally parallel inlet and outlet fittings communicating respectively with said opening and said blower chamber.
Claim 2
Dependent Claim
205 words
A ring-type blower, comprising: an electric motor having a stator and a rotor rotatable relative to said stator about an axis; an impeller connected with said motor and having an annulus forming a blade crown concentrically surrounding said motor; and a housing surrounding said motor and said annulus and defining a motor chamber wholly receiving said stator and rotor of said motor and axially extending to opposite sides of the blade crown of said annulus, said stator and said rotor being so constructed and arranged as to be in direct contact with fluid traversing said motor chamber, an intake opening communicating with said motor chamber to one axial side of said motor, a ring-type blower chamber receiving said annulus around said motor chamber, and an axially extending passage communicating between said blower chamber and said motor chamber and opening into the latter at the opposite side of said motor whereby a fluid medium is drawn through said opening and said motor chamber between said stator and said rotor in one direction and is then fed through said passage to said blower chamber in the opPosite axial direction, said housing having generally parallel inlet and outlet fittings communicating respectively with said opening and said blower chamber.
Claim 3
Dependent Claim
32 words
The blower defined in claim 1 wherein said chamber and said passage define a channel for said fluid medium, further comprising a sound-damping layer lining at least one wall of said channel.
Claim 4
Dependent Claim
18 words
The blower defined in claim 2 wherein said layer is provided on a wall of said motor chamber.
Claim 5
Dependent Claim
194 words
A ring-type blower, comprising: an electric motor having a stator and a rotor rotatable relative to said stator about an axis; an impeller connected with said motor and having an annulus forming a blade crown concentrically surrounding said motor; and a housing surrounding said motor and said annulus and defining a motor chamber receiving said motor and axially extending to opposite sides of the blade of said annulus, an intake opening communicating with said motor chamber to one axial side of said motor, a ring-type blower chamber receiving said annulus around said motor chamber, and an axially extending passage communicating between said blower chamber and said motor chamber and opening into the latter at the opposite side of said motor whereby a fluid medium is drawn through said opening and said motor chamber in one direction and is then fed through said passage to said blower chamber in the opposite direction, said housing having generally parallel inlet and outlet fittings communicating respectively with said opening and said blower chamber, said impeller having a central portion extending axially out of said plane and formed with an axial-intake axial-out-flow fan between said opening and said motor.
Claim 6
Dependent Claim
194 words
A ring-type blower, comprising: an electric motor having a stator and a rotor rotatable relative to said stator about an axis; an impeller connected with said motor and having an annulus forming a blade crown concentrically surrounding said motor; and a housing surrounding said motor and said annulus and defining a motor chamber receiving said motor and axially extending to opposite sides of the blade of said annulus, an intake opening communicating with said motor chamber to one axial side of said motor, a ring-type blower chamber receiving said annulus around said motor chamber, and an axially extending passage communicating between said blower chamber and said motor chamber and opening into the latter at the opposite side of said motor whereby a fluid medium is drawn through said opening and said motor chamber in one direction and is then fed through said passage to said blower chamber in the opposite direction, said housing having generally parallel inlet and outlet fittings communicating respectively with said opening and said blower chamber, said impeller having a central portion extending axially out of said plane and formed with an axial-intake axial-out-flow fan between said opening and said motor.
Claim 7
Dependent Claim
32 words
The blower defined in claim 4 wherein said chamber and said passage define a channel for said fluid medium, further comprising a sound-damping layer lining at least one wall of said channel.
Claim 8
Dependent Claim
18 words
The blower defined in claim 5 wherein said layer is provided on a wall of said motor chamber.
Claim 9
Dependent Claim
33 words
The blower defined in claim 4 wherein said axial-intake fan comprises a plurality of angularly spaced radial spokes of a pitch adapted to axially induce the flow of gas into said motor chamber.
Claim 10
Dependent Claim
18 words
The blower defined in claim 7 wherein said spokes are composed at least in part of die-cast metal.
Claim 11
Dependent Claim
18 words
The blower defined in claim 8 wherein said spokes have steel skeletons and aluminum die-cast around the skeleton.
Claim 12
Dependent Claim
18 words
The blower defined in claim 4 wherein said fan consists at least in part of synthetic-resin radial spokes.
Claim 13
Dependent Claim
14 words
The blower defined in claim 4 wherein said spokes are provided with sound-damping layers.
Claim 14
Dependent Claim
204 words
A ring-type blower, comprising: an electric motor having a stator and a rotor rotatable relative to said stator about an axis; an impeller connected with said motor and having an annulus forming a blade crown concentrically surrounding said motor; and a housing surrounding said motor and said annulus and defining a motor chamber receiving said motor and axially extending to opposite sides of the blade of said annulus, an intake opening communicating with said motor chamber to one axial side of said motor, a ring-type blower chamber receiving said annulus around said motor chamber, and an axially extending passage communicating between said blower chamber and said motor chamber and opening into the latter at the opposite side of said motor whereby a fluid medium is drawn through said opening and said motor chamber in one direction and is then fed through said passage to said blower chamber in the opposite direction, said housing having generally parallel inlet and outlet fittings communicating respectively with said opening and said blower chamber, said annulus being provided with blade crowns on opposite faces thereof, each received in a respective radial-type blower chamber formed in said housing, said blower further comprising a conduit connecting said blower chambers in series.
Claim 15
Dependent Claim
204 words
A ring-type blower, comprising: an electric motor having a stator and a rotor rotatable relative to said stator about an axis; an impeller connected with said motor and having an annulus forming a blade crown concentrically surrounding said motor; and a housing surrounding said motor and said annulus and defining a motor chamber receiving said motor and axially extending to opposite sides of the blade of said annulus, an intake opening communicating with said motor chamber to one axial side of said motor, a ring-type blower chamber receiving said annulus around said motor chamber, and an axially extending passage communicating between said blower chamber and said motor chamber and opening into the latter at the opposite side of said motor whereby a fluid medium is drawn through said opening and said motor chamber in one direction and is then fed through said passage to said blower chamber in the opposite direction, said housing having generally parallel inlet and outlet fittings communicating respectively with said opening and said blower chamber, said annulus being provided with blade crowns on opposite faces thereof, each received in a respective radial-type blower chamber formed in said housing, said blower further comprising a conduit connecting said blower chambers in series.
Claim 16
Dependent Claim
32 words
The blower defined in claim 12 wherein saId chamber and said passage define a channel for said fluid medium, further comprising a sound-damping layer lining at least one wall of said channel.
Claim 17
Dependent Claim
18 words
The blower defined in claim 13 wherein said layer is provided on a wall of said motor chamber.
Claim 18
Dependent Claim
36 words
The blower defined in claim 12 wherein said impeller has an axial-intake fan comprising a plurality of angularly spaced radial spokes of a pitch adapted to axially induce the flow of gas into said motor chamber.
Claim 19
Dependent Claim
18 words
The blower defined in claim 15 wherein said spokes are composed at least in part of die-cast metal.
Claim 20
Dependent Claim
18 words
The blower defined in claim 16 wherein said spokes have steel skeletons and aluminum die-cast around the skeleton.
Claim 21
Dependent Claim
18 words
The blower defined in claim 15 wherein said fan consists at least in part of synthetic-resin radial spokes.
Claim 22
Dependent Claim
14 words
The blower defined in claim 15 wherein said spokes are provided with sound-damping layers.
References Cited (Backward Citations)
US2398113A
Cited
US2677497A
Cited
US2990779A
Cited
FR1376086A
Cited
US3395853A
Cited
US3558236A
Cited
US3592566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |