CN1039470A - Centrifugal pressure expanding propeller - Google Patents
Centrifugal pressure expanding propeller Download PDFInfo
- Publication number
- CN1039470A CN1039470A CN 89106134 CN89106134A CN1039470A CN 1039470 A CN1039470 A CN 1039470A CN 89106134 CN89106134 CN 89106134 CN 89106134 A CN89106134 A CN 89106134A CN 1039470 A CN1039470 A CN 1039470A
- Authority
- CN
- China
- Prior art keywords
- centrifugal
- propulsion device
- impeller
- diffuser
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Abstract
Centrifugal pressure expanding propeller can be used as the lift unit of high speed helicopters, or the advancing means of hovercraft, hydrofoil craft, and the advancing means of baby plane.Its basic structure is by centrifugal impeller (1), single face umbrella shape Diffuser (2), and rectification leaf grating (3) and annular row gas port (4) are formed, and this angle of rake thrust size is not subjected to the restriction of flying speed.
Description
The invention belongs to a kind of propulsion device.
The fan of aircraft and hovercraft or screw propeller propulsive efficiency are not high in many cases.Common solution is to make angle of rake exhaust velocity and flying speed more approaching.But the also corresponding reduction of at this moment angle of rake thrust.
The objective of the invention is to provide a kind of centrifugal pressure expanding propeller that in very wide velocity range, all has higher propulsive efficiency and thrust.
The object of the present invention is achieved like this: this propulsion device has a centrifugal working impeller and rotates the gas work done under engine driveshaft drives, outlet back wall at centrifugal working impeller has a umbrella shape Diffuser around centrifugal impeller, and the umbrella shape Diffuser is that a kind of single wall face does not have impeller structure.Behind the flow outlet of this Diffuser, be connected with a circle rectification leaf grating and an annular row gas port of forming by radial blade, still have certain circumferentially air-flow of component velocity after slowing down significantly and after the leaf grating rectification, discharge from relief opening again.The high velocity air that comes out from centrifugal working impeller moves and the deceleration diffusion at centrifugal action lower edge Diffuser recess surface current, airmeter area and sectional area increase, most of kinetic energy of air-flow changes large-area pressure potential in this Diffuser, thereby makes the inside and outside pressure difference that produces of diffuser walls obtain propelling force.This propulsion device also can replace centrifugal impeller to the gas work done with axial fan or firing chamber, the turning air flue is housed behind fan or firing chamber makes axial flow become Radial Flow, the rectification leaf grating is housed in air flue makes air-flow produce the circumferential component of pivoting simultaneously.This propulsion device also can water or combustion gas as working medium.
The high velocity air that the centrifugal work wheel produces is in single wall face umbrella shape vaneless diffuser, and kinetic energy is fully used, and its thrust size is not subjected to the restriction of flying speed simultaneously.
Concrete structure of the present invention is provided by following examples and accompanying drawing.
Fig. 1 is that the structural principle of the centrifugal pressure expanding propeller that proposes according to the present invention cuts open and shows single line drawing.
Among Fig. 1: (1) centrifugal working impeller, (2) single wall face umbrella shape vaneless diffuser.(3) rectification leaf grating, (4) annular convergent contour relief opening, (5) engine driveshaft, (6) centrifugal working impeller protecgulum, (7) and intake duct flange connecting, (8) interior connecting ring, (9) outer connecting ring, (10) outer adpting flange, ring in (11) relief opening outer shroud, (12) relief opening.
The transmission shaft of motor (5) is connected with running wheel from the inlet end of centrifugal working impeller (1), and centrifugal work wheel (1) adopts blowing-type sealing forward curved vane type impeller.The protecgulum (6) of active wheel (1) connects single wall face umbrella shape vaneless diffuser (2) by flange, and this Diffuser is semielliptical umbrella shape curved surface.The lower end of this Diffuser (2) connects the rectification leaf grating (3) that the radially evenly distributed blade of a circle is formed by flange, the upper end of this Diffuser (2) has a flanged (FLGD) circular hole to be connected by flange with the protecgulum (6) of active wheel, and leaf grating (3) comprises that an interior connecting ring (8) is connected by bolt with radial blade with outer connecting ring (9).Outer connecting ring (9) is connected by the outer shroud (11) of flange with the relief opening (4) of annular convergent contour, and the interior ring (12) of relief opening (4) is connected by flange with interior connecting ring (8).Relief opening (4) has the exhaust mode of three kinds of discharge directions to select under the different service conditions, a kind of is axial exhaust, a kind of is intilted entad exhaust, and a kind of is laterally radially exhaust, and can save need not for the interior ring (12) of relief opening in many cases.This propulsion device is connected and fixed by flange (10) and aircraft, is connected the location by flange (7) with driving mechanism and intake duct.This angle of rake non-rotatable member can be made with high tensile aluminium alloy.Be provided with radially stiffening rib with broadwise at the outer surface of single wall face umbrella shape vaneless diffuser (2) and centrifugal impeller protecgulum.The location of centrifugal impeller (1) is connected realization by transmission shaft (5) with outside driving mechanism.The thrust size that motor is regulated in the venting of can cracking on umbrella shape Diffuser (2) wall.
Claims (4)
1, a kind of propulsion device, it is characterized in that this propulsion device has a centrifugal working impeller (1), outlet back wall at centrifugal working impeller (1) has a umbrella shape Diffuser (2) around centrifugal impeller, is connected with a circle rectification leaf grating (3) and an annular row gas port (4) of being made up of radial blade after the outlet of this Diffuser (2).
2, propulsion device according to claim 1 is characterized in that umbrella shape Diffuser (2) is that a kind of single wall face does not have impeller structure.
3, propulsion device according to claim 1 is characterized in that relief opening (4) has three kinds of discharge directions, and a kind of is axial exhaust, a kind of is intilted entad exhaust, a kind of is laterally radially exhaust, in many cases, can save the interior ring (12) without relief opening.
4, propulsion device according to claim 1, it is characterized in that and to replace centrifugal impeller (1) with axial fan or firing chamber, the turning air flue that axial flow is transferred to Radial Flow is housed behind fan or firing chamber, the rectification leaf grating that can make air-flow produce circumferential component is housed in the turning air flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106134 CN1012152B (en) | 1989-08-03 | 1989-08-03 | Centrifugal pressure expanding propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106134 CN1012152B (en) | 1989-08-03 | 1989-08-03 | Centrifugal pressure expanding propeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1039470A true CN1039470A (en) | 1990-02-07 |
| CN1012152B CN1012152B (en) | 1991-03-27 |
Family
ID=4856629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89106134 Expired CN1012152B (en) | 1989-08-03 | 1989-08-03 | Centrifugal pressure expanding propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1012152B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020015A (en) * | 2010-11-09 | 2011-04-20 | 任永斌 | Centrifugal lift device |
| CN102197227A (en) * | 2008-10-25 | 2011-09-21 | 戴森技术有限公司 | A fan |
| CN108791879A (en) * | 2018-04-28 | 2018-11-13 | 陈道渠 | A kind of medusoid unmanned plane |
-
1989
- 1989-08-03 CN CN 89106134 patent/CN1012152B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102197227A (en) * | 2008-10-25 | 2011-09-21 | 戴森技术有限公司 | A fan |
| CN102020015A (en) * | 2010-11-09 | 2011-04-20 | 任永斌 | Centrifugal lift device |
| CN108791879A (en) * | 2018-04-28 | 2018-11-13 | 陈道渠 | A kind of medusoid unmanned plane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1012152B (en) | 1991-03-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |