WO1996006285A1 - Überschallvorrichtung - Google Patents
Überschallvorrichtung Download PDFInfo
- Publication number
- WO1996006285A1 WO1996006285A1 PCT/DE1995/001160 DE9501160W WO9606285A1 WO 1996006285 A1 WO1996006285 A1 WO 1996006285A1 DE 9501160 W DE9501160 W DE 9501160W WO 9606285 A1 WO9606285 A1 WO 9606285A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- supersonic device
- supersonic
- mixer
- struts
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
- F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
- F04F5/22—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating of multi-stage type
Definitions
- the invention relates to an overview device with an elongated tubular mixer and diffuser housing, in which a first axially and this one in series with a
- Displacement body provided second propelling nozzle is arranged.
- Multiple ejectors consisting of a set of at least two
- nozzles which are arranged one after the other in the direction of flow, can be used for various purposes.
- an ejector device which consists of at least two ejectors formed by a corresponding number of axially successive jet nozzles of increasing size within one
- Modular system made up of several in a longitudinal direction
- Sections exist, each with at most one transverse wall
- This ejector device known from the document is used, for example, to generate overpressure and underpressure when machine is moving paper sheets in printers
- the supersonic device known from this document has the design of a conventional two-stage supersonic, which consists of two individual stages with central primary nozzles and cylindrical mixing chambers
- the usual subsonic cone diffuser is connected to the mixing chamber of the second stage.
- the deceleration of the flow of the two-stage supersonic ejector emerging from the first stage is carried out in a subsonic double-cone diffuser, which is at the same time the constructive connection of the
- the two-stage ejector can only be useful for small ones
- the two-stage supersonic ejector is still burdened with the disadvantage that in the first supersonic diffuser it is initially decelerated with high losses and then accelerated again in the subsequent part.
- the invention has set itself the goal of the aforementioned
- the invention achieves this aim by the characterizing features of claim 1.
- the subclaims are advantageous developments of the supersonic device.
- Displacement body of the second drive nozzle connected in series into the core and mixing zone of the first drive nozzle.
- both drive nozzles are each arranged in a cylindrical region of the mixer and diffuser housing.
- the second propelling nozzle is preceded by a conical displacement body in the form of a supersonic cone or wedge, the tip or cutting edge of which in the conically tapering first mixing zone of the diffuser
- the integrated shape of the T at dems trahlers with supersonic cone or wedge diffuser works much less loss than the classic mixer with shock diffuser tube.
- the overall length of the integrated tandem radiator is smaller than the known one, including the two-stage system.
- conical DC mixing chambers achieve significantly better efficiencies than the known cylindrical mixing chambers for high-performance jet pumps.
- the second propelling nozzle which is at least 0.8 times smaller in its dimensions, is in the first transonic range of the
- This cylindrical part extends beyond the nozzle end of the second driving nozzle, to the extent that the second mixing zone is not touched.
- the conically tapering part of the mixing zone 2 which is followed by the second region of the transistor, then adjoins this cylindrical part of the diffuser housing
- the second driving nozzle is attached to the housing by at least three, preferably for securely fixing the radiator with a total of six struts.
- One of the struts is as
- the cross sections of the struts are designed to obstruct the flow as little as possible.
- An embodiment is a rhombic cross section, the surfaces inclined towards the flow preferably being one
- Angle between the struts and the drive nozzle is less than 70 °.
- Fig. 1 shows the diagram of the supersonic device
- Fig. 2 shows the arrangement of the struts
- Fig. 3 housing with rectangular driving nozzles.
- the housing 20 has a first
- cylindrical part 21 for load current supply on it adjoining second cylindrical part 22 in the region of the trans-mixing zone, followed by a second mixer part 24, which is followed by an impact diffuser 25 and finally a subsonic diffuser 26.
- the first driving nozzle 11 is arranged in the cylindrical part 21.
- the supersonic device also has a second driving nozzle 12 connected in series and arranged within the second cylindrical part 22.
- the driving nozzle 12 is fastened to the cylindrical part 21 of the housing 20 via struts 15, 16.
- struts 15 are arranged at the head and foot end of the propellant nozzle 12, one of which is designed as a propellant supply strut 16 which is connected to the tubular propellant supply 13.
- the second driving nozzle 12 has on its end face inclined towards the driving nozzle 11 a conical or wedge-shaped displacement body 14 with a half angle ⁇ and one
- Dashed lines are in the first mixer part 23 of the housing 20, a first core jet 31 with a first mixing zone 32 and d in the second cylindrical part 22 and in the second
- Mixer part 24 a second core jet 33 and a second
- the letter A is the distance between the mouth of the second driving nozzle 12 and the outlet mouth of the second
- Mixing part 24 denotes.
- Fig. 2 shows in detail the attachment of the second
- struts 15 are arranged at the head and foot end of the driving nozzle, from which one is designed as a propellant supply strut 16 which is connected to the tubular propellant supply 13.
- the struts are arranged at right angles at a strut angle ⁇ in the lower part of the picture.
- the section A-A shows the cross-sectional area of a strut 15 which is designed and arranged in such a way that the flow medium has as little resistance as possible
- the cross-sectional area is spatially formed, in the lower part the areas inclined to the flow are larger and arranged at an acute angle to one another than the other two areas.
- Section B-B shows that a total of three struts are distributed around the circumference of the driving nozzle, namely two struts 15 and a blowing agent supply strut 16 within the second cylindrical part 22.
- FIG. 3 shows the structure of the mixer and diffuser housing 20 as in FIG. 1 in a perspective view.
- a propellant nozzle 11 is arranged in the housing 20 in the region of the first cylindrical part 21 and has a rectangular outlet cross section.
- a second drive nozzle 12 is connected in series, which likewise has a rectangular outlet cross section and has a housing size which extends directly to the housing wall of the second cylindrical part 22 on the narrow sides.
- the propellant supply 13 is guided directly through the wall of the housing 20 and the propellant nozzle 12.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
- Percussion Or Vibration Massage (AREA)
- Nozzles (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95929721A EP0793780B1 (de) | 1994-08-18 | 1995-08-18 | Überschallvorrichtung |
AU33398/95A AU3339895A (en) | 1994-08-18 | 1995-08-18 | Supersonic jet nozzle-device |
US08/776,988 US5839884A (en) | 1994-08-18 | 1995-08-18 | Supersonic jet pump device with two drive nozzles |
DE59507105T DE59507105D1 (de) | 1994-08-18 | 1995-08-18 | Überschallvorrichtung |
JP08507707A JP3137986B2 (ja) | 1994-08-18 | 1995-08-18 | 超音速装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4430574A DE4430574C2 (de) | 1994-08-18 | 1994-08-18 | Strahlpumpe mit zwei Überschalldüsen |
DEP4430574.5 | 1994-08-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996006285A1 true WO1996006285A1 (de) | 1996-02-29 |
Family
ID=6526790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1995/001160 WO1996006285A1 (de) | 1994-08-18 | 1995-08-18 | Überschallvorrichtung |
Country Status (7)
Country | Link |
---|---|
US (1) | US5839884A (de) |
EP (1) | EP0793780B1 (de) |
JP (1) | JP3137986B2 (de) |
AT (1) | ATE185880T1 (de) |
AU (1) | AU3339895A (de) |
DE (2) | DE4430574C2 (de) |
WO (1) | WO1996006285A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10050697A1 (de) * | 2000-10-13 | 2002-04-18 | Alstom Switzerland Ltd | Verfahren und Vorrichtung zur isothermen Kompression eines gasförmigen Mediums |
KR100801658B1 (ko) | 2006-09-19 | 2008-02-05 | 한국에너지기술연구원 | 연료전지용 양방향 가변노즐 이젝터 |
CA2560814C (en) * | 2006-09-25 | 2014-08-26 | Transcanada Pipelines Limited | Tandem supersonic ejectors |
WO2009008776A1 (ru) * | 2007-07-06 | 2009-01-15 | Obschestvo S Ogranichennoi Otvetstvennostju 'akva-Piro-Alyans' | Ствол для получения струй аэрозольного распыла |
RU2348871C1 (ru) * | 2007-08-22 | 2009-03-10 | Вадим Иванович Алферов | Устройство для сжижения и сепарации газов |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3025525A1 (de) * | 1980-07-05 | 1982-01-28 | Jürgen 4477 Welver Volkmann | Ejektorvorrichtung |
GB2100351A (en) * | 1981-06-17 | 1982-12-22 | British Nuclear Fuels Ltd | Steam ejector pumping system |
DE4400958C1 (de) * | 1994-01-14 | 1995-04-06 | Bayerische Motoren Werke Ag | Saugstrahlpumpe |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE313020C (de) * | ||||
DE322838C (de) * | 1918-05-31 | 1920-07-09 | Aeg | Strahlpumpe |
DE662250C (de) * | 1936-01-21 | 1938-07-09 | Gerhard Fehst Dipl Ing | Strahlverdichter, bei welchem dem anzusaugenden Mittel vor dem Zusammentreffen mit dem Treibmittel eine gewisse Geschwindigkeit erteilt ist |
US2111266A (en) * | 1936-12-28 | 1938-03-15 | Thomas S Hopkins | Draft inducer |
US2424722A (en) * | 1944-09-16 | 1947-07-29 | Youngstown Welding & Engineeri | Jet for tanks and the like |
US2602398A (en) * | 1947-10-17 | 1952-07-08 | Alfred E Nittka | Jet booster pump |
DE1081182B (de) * | 1959-02-14 | 1960-05-05 | Siemens Ag | Aus Dampf- und Wasserstrahlsauger bestehendes Strahleraggregat |
DE1268307B (de) * | 1961-07-01 | 1968-05-16 | Koerting Ag | Strahlpumpe |
US3371618A (en) * | 1966-02-18 | 1968-03-05 | Chambers John | Pump |
US4379679A (en) * | 1980-12-01 | 1983-04-12 | United Technologies Corporation | Supersonic/supersonic fluid ejector |
US4487553A (en) * | 1983-01-03 | 1984-12-11 | Fumio Nagata | Jet pump |
-
1994
- 1994-08-18 DE DE4430574A patent/DE4430574C2/de not_active Expired - Fee Related
-
1995
- 1995-08-18 JP JP08507707A patent/JP3137986B2/ja not_active Expired - Fee Related
- 1995-08-18 AT AT95929721T patent/ATE185880T1/de active
- 1995-08-18 WO PCT/DE1995/001160 patent/WO1996006285A1/de active IP Right Grant
- 1995-08-18 DE DE59507105T patent/DE59507105D1/de not_active Expired - Fee Related
- 1995-08-18 AU AU33398/95A patent/AU3339895A/en not_active Abandoned
- 1995-08-18 EP EP95929721A patent/EP0793780B1/de not_active Expired - Lifetime
- 1995-08-18 US US08/776,988 patent/US5839884A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3025525A1 (de) * | 1980-07-05 | 1982-01-28 | Jürgen 4477 Welver Volkmann | Ejektorvorrichtung |
GB2100351A (en) * | 1981-06-17 | 1982-12-22 | British Nuclear Fuels Ltd | Steam ejector pumping system |
DE4400958C1 (de) * | 1994-01-14 | 1995-04-06 | Bayerische Motoren Werke Ag | Saugstrahlpumpe |
Also Published As
Publication number | Publication date |
---|---|
DE59507105D1 (de) | 1999-11-25 |
JPH10504368A (ja) | 1998-04-28 |
AU3339895A (en) | 1996-03-14 |
US5839884A (en) | 1998-11-24 |
ATE185880T1 (de) | 1999-11-15 |
EP0793780B1 (de) | 1999-10-20 |
DE4430574C2 (de) | 1996-07-18 |
DE4430574A1 (de) | 1996-02-22 |
EP0793780A1 (de) | 1997-09-10 |
JP3137986B2 (ja) | 2001-02-26 |
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