EP3199816B1 - Seitenkanal bläser/sauger mit verbessertem laufrad - Google Patents
Seitenkanal bläser/sauger mit verbessertem laufrad Download PDFInfo
- Publication number
- EP3199816B1 EP3199816B1 EP16153453.2A EP16153453A EP3199816B1 EP 3199816 B1 EP3199816 B1 EP 3199816B1 EP 16153453 A EP16153453 A EP 16153453A EP 3199816 B1 EP3199816 B1 EP 3199816B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- impeller
- central body
- blade
- aspirator
- 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.)
- Active
Links
- 239000012530 fluid Substances 0.000 description 17
- 230000002093 peripheral effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009424 underpinning Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D23/00—Other rotary non-positive-displacement pumps
- F04D23/008—Regenerative pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
Definitions
- the present invention relates to a side-channel blower / aspirator with an improved impeller.
- the impeller is enclosed into a casing in which an annular conduit is defined, in which the impeller blades rotate.
- the annular conduit has a suction mouth, through which a fluid (normally air) is aspirated and a delivery mouth through which the fluid is expelled.
- a fluid normally air
- a delivery mouth through which the fluid is expelled.
- the impellers used in side-channel machines are provided with rectilinear radial blades.
- the Applicant following research and experimentation activities, has observed that the shape of known impeller blades does not allow the operating principle described above to be exploited with full efficiency.
- the technical task underpinning the present invention is therefore to propose a side-channel blower / aspirator with an improved impeller that makes it able to offer better performance levels with respect to the known art.
- 1 indicates the side-channel blower / aspirator according to the invention.
- the proposed machine 1 comprises an impeller 2 improved with respect to machines of the prior art.
- the impeller 2 is provided with a plurality of peripheral blades 21 and is equipped with a central hub 22, fitted onto a shaft 11 (see in particular figure 2 ), which is placed in rotation by motor means of the known type, for example the electric motor 12 represented in figures 1 and 2 .
- the blades 21 of the impeller 2 are not rectilinear like those of the prior art but, on the contrary, have a particular curvature.
- the impeller 2 according to the invention is enclosed in a casing 13, 14 which internally defines an annular conduit C within which the blades 21 rotate, in the direction indicated by the arrow in figure 3 .
- the two parts of the channel C which are ideally separated by the plane orthogonal to the axis of rotation of the impeller 2 coinciding with the plane of symmetry of the machine 1, are called “side channels”.
- the casing is preferably made of two half-shells 13, 14, sealingly fixed, one of which is connected to the electric motor 12, while the other one constitutes a front cover.
- the aforementioned annular conduit C has a suction mouth 3 for aspirating fluid (in particular air) taken externally to the machine 1 and a delivery mouth 4 for allowing the fluid to exit from the machine 1 itself (see figure 3 ).
- the annular conduit C has a first section which, with respect to the advancement direction of the blades 21 in the conduit, goes from the suction mouth 3 to the delivery mouth 4.
- the annular conduit C further has a second section, which goes from the delivery mouth 4 to the suction mouth 3, within which, preferably, the blades 21 skim the internal walls of the section itself so as to limit the passage of fluid from the delivery mouth 4 to the suction mouth 3.
- the impeller 2 is equipped with blades 21 comprising at least one longitudinally curved portion, defining a substantially curved profile.
- such blades 21 each define a concavity 23 facing the advancement direction of the blades 21 within the conduit C.
- the blades 21 of the impeller 2 according to the invention are bent or curved, hence having a concave front surface 23, at least at the respective aforementioned curved portion.
- the section (or intersection) of the blades 21 of the impeller 2 taken along an ideal plane perpendicular to the axis of rotation of the impeller 2 defines, at the front surface 23, a curved and not rectilinear line.
- the impeller 2 may comprise a central body 24, preferably axial symmetric, for example discoidal, at the centre of which the aforementioned hub 22 is afforded and from which the blades 21 extend.
- the blades 21 originate from a circumferential portion 25 of the central body 24 and extend outwards, substantially lying in the plane of the central body 24 itself.
- each blade 21 includes a proximal portion 210 (i.e. more internal) joined to the central body 24 at its circumferential portion 25.
- the blades 21 have a curvature along their whole longitudinal extension; in this case, the whole side profile of the individual blade 21 has a continuous curvature, without rectilinear sections (see in particular figures 3 and 4 ).
- the blades may each be provided with one rectilinear portion and at least one curved portion, the latter being for example a longitudinal distal portion comprising the free end of the relative blade 21.
- the blades may be formed by a plurality of curved sections, defining cuspidal joining zones.
- the curved or partially curved conformation of the blades 21 allows the machine 1 to operate more efficiently with respect to the prior art, for the reasons illustrated below.
- the air found inside the annular channel receives, from the impeller 2, both a thrust forwards (see arrow A of figure 4 ) and a centrifugal thrust (see arrow B), i.e. away from the centre of rotation of the impeller 2 itself.
- the part of air thrust in the centrifugal direction which would tend to move radially away from the blades 21, is instead intercepted by the blades 21 themselves and projected forwards.
- the radial component of the fluid's motion field is in part deviated in the circumferential direction already by the actual blade before the fluid is subject to the action of the closing walls of the annular conduit C.
- the blades 21 of the impeller 2 are placed tangentially to the aforementioned circumferential portion 25 of the central body 24 (see in particular figure 4 ).
- the mentioned proximal portion 210 of the blade 21 extends from the circumferential portion 25 outwards and along a tangential direction to the circumferential portion 25 itself.
- proximal (or “base”) portion 210 of the blade 21 has a curvature such that it is tangential to the circumferential portion 25.
- part of the fluid contained in the annular conduit C tends to move forwards in the rotation direction along an ascending curve; instead, part of the fluid closer to the centre of rotation follows a descending curve until it moves in the retrograde direction upon reaching the internal area affected by the base of the blades 21 (see arrow D in figure 4 ).
- the blades 21 of the impeller 2 according to the invention being equipped at the base 210 of the aforementioned tangential bend at the joining circumference between blades 21 and central body 24, are able to intercept the aforementioned retrograde fluid and push it forwards, increasing the efficiency of the machine 1.
- each blade has, in addition to the longitudinal curvature described above, a second curvature along its transversal extension.
- each proposed impeller blade has the transversal curvature along its extension, particularly along its whole longitudinal extension and its whole transversal extension.
- the section (or intersection) of the blades 21 of the impeller 2 taken along a plane perpendicular to the diametral plane and parallel to the axis of rotation of the impeller 2 defines, at the front surface 23 itself, a curved and not rectilinear line.
- the blade is able to intercept and project forwards the air flows which would tend to laterally escape from the blade itself.
- the invention allows improved efficiency of the machine 1 with respect to the prior art.
- the blades 21 have a curvature such as to be tangential to a respective diametral plane which passes through the axis of the central body; in detail, the tangency point is located in the rear convex part of the blade 21.
- each blade 21 is contained in one of the two semi-spaces defined by an ideal diametral plane that joins the axis of the central body 24 to the joining zone between the blade 21 and the central body 24.
- the impeller 2 proposed may include a portion with an annular progression 26, i.e. a geometric surface of revolution about the axis of rotation.
- Such an annular portion 26 is incorporated into the blades 21 and extends starting from the circumferential portion 25 mentioned various times of the impeller, in a radial direction, and ends at a shorter distance than the longitudinal extension of the blades 21, for example, substantially half way along their length.
- the impeller 2 proposed may be made of die-cast aluminium or a polymeric material by injection moulding.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Claims (5)
- Seitenkanalverdichter für Druck- oder Vakuumbetrieb (1), umfassend zumindest ein Laufrad (2), das mit einer Vielzahl von Schaufeln (21) ausgestattet ist, und ein Gehäuse (13, 14), in dem das Laufrad (2) enthalten ist und innerhalb dessen ein ringförmiger Kanal (C) ausgebildet ist, in dem sich die Schaufeln (21) drehen, wobei die Schaufeln (21) jeweils zumindest einen Abschnitt umfassen, der kurvenförmig entlang einer Längsausdehnungsrichtung der Schaufel (21) gebogen ist, um eine Konkavität (23) zu bilden, die in Richtung der Laufrichtung der Schaufeln (21) innerhalb des Kanals weist; wobei das Laufrad (2) einen achsensymmetrischen Mittelteil (24) umfasst, mit dem die Schaufeln (21) an entsprechenden Verbindungsbereichen verbunden sind, wobei der Seitenkanalverdichter für Druck- oder Vakuumbetrieb dadurch gekennzeichnet ist, dass jedes Laufrad (21) vollständig innerhalb eines der zwei Halbräume enthalten ist, die durch eine gedachte Diametralebene definiert sind, welche die Achse des Mittelteils (24) mit dem Verbindungsbereich zwischen der Schaufel (21) und dem Mittelteil (24) verbindet, und dass jede Schaufel eine zweite Krümmung entlang ihrer transversalen Ausdehnungsrichtung aufweist.
- Seitenkanalverdichter für Druck- oder Vakuumbetrieb (1) nach dem vorhergehenden Anspruch, wobei die Schaufeln (21) eine Längskrümmung entlang ihrer gesamten Längsausdehnungsrichtung aufweisen.
- Seitenkanalverdichter für Druck- oder Vakuumbetrieb (1) nach zumindest einem der vorhergehenden Ansprüche, wobei das Laufrad (2) einen Mittelteil (24) aufweist, von dem ausgehend sich die Schaufeln (21) erstrecken, die tangential zu einem Umfangsabschnitt (25) des Mittelteils (24) angeordnet sind.
- Seitenkanalverdichter für Druck- oder Vakuumbetrieb (1) nach dem vorhergehenden Anspruch, wobei das Laufrad (2) einen Mittelteil (24) umfasst, von dem ausgehend sich die Schaufeln (21) erstrecken, wobei jede Schaufel (21) einen proximalen Abschnitt (210) aufweist, der mit einem Umfangsabschnitt (25) des Mittelteils (24) verbunden ist, wobei der proximale Abschnitt (210) der Schaufel (21) derart gekrümmt ist, dass er tangential zu dem Umfangsabschnitt (25) des Mittelteils (24) ist.
- Seitenkanalverdichter für Druck- oder Vakuumbetrieb (1) nach Anspruch 1, wobei jede der Schaufeln die genannte zweite Krümmung entlang ihrer gesamten Längsausdehnungsrichtung aufweist.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES16153453T ES2881049T3 (es) | 2016-01-29 | 2016-01-29 | Soplador/aspirador de canal lateral con un impulsor mejorado |
PL16153453T PL3199816T3 (pl) | 2016-01-29 | 2016-01-29 | Dmuchawa boczno-kanałowa / pochłaniacz z ulepszonym wirnikiem |
EP16153453.2A EP3199816B1 (de) | 2016-01-29 | 2016-01-29 | Seitenkanal bläser/sauger mit verbessertem laufrad |
DK16153453.2T DK3199816T3 (da) | 2016-01-29 | 2016-01-29 | Sidekanalblæser/-sugeapparat med et forbedret vingehjul |
US15/415,282 US20170218971A1 (en) | 2016-01-29 | 2017-01-25 | Side-channel blower / aspirator with an improved impeller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16153453.2A EP3199816B1 (de) | 2016-01-29 | 2016-01-29 | Seitenkanal bläser/sauger mit verbessertem laufrad |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3199816A1 EP3199816A1 (de) | 2017-08-02 |
EP3199816B1 true EP3199816B1 (de) | 2021-05-26 |
Family
ID=55521354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16153453.2A Active EP3199816B1 (de) | 2016-01-29 | 2016-01-29 | Seitenkanal bläser/sauger mit verbessertem laufrad |
Country Status (5)
Country | Link |
---|---|
US (1) | US20170218971A1 (de) |
EP (1) | EP3199816B1 (de) |
DK (1) | DK3199816T3 (de) |
ES (1) | ES2881049T3 (de) |
PL (1) | PL3199816T3 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD860956S1 (en) * | 2017-03-31 | 2019-09-24 | Delta Electronics, Inc. | Impeller |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060269394A1 (en) * | 2005-05-27 | 2006-11-30 | Shizu Ishikawa | Blower |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3545890A (en) * | 1967-12-29 | 1970-12-08 | Mechanical Tech Inc | Regenerative compressor |
US5395210A (en) * | 1989-02-13 | 1995-03-07 | Hitachi, Ltd. | Vortex flow blower having blades each formed by curved surface and method of manufacturing the same |
US5143511A (en) * | 1990-09-28 | 1992-09-01 | Lamson Corporation | Regenerative centrifugal compressor |
RU2032836C1 (ru) * | 1992-12-29 | 1995-04-10 | Владимир Николаевич Хмара | Вихревой компрессор |
US6422808B1 (en) * | 1994-06-03 | 2002-07-23 | Borgwarner Inc. | Regenerative pump having vanes and side channels particularly shaped to direct fluid flow |
JPH0886298A (ja) * | 1994-09-19 | 1996-04-02 | Hitachi Ltd | ドライターボ真空ポンプ |
US5819524A (en) * | 1996-10-16 | 1998-10-13 | Capstone Turbine Corporation | Gaseous fuel compression and control system and method |
US6113363A (en) * | 1999-02-17 | 2000-09-05 | Walbro Corporation | Turbine fuel pump |
DE19955955A1 (de) * | 1999-11-19 | 2001-06-13 | Siemens Ag | Seitenkanalmaschine |
US6709243B1 (en) * | 2000-10-25 | 2004-03-23 | Capstone Turbine Corporation | Rotary machine with reduced axial thrust loads |
US6641361B2 (en) * | 2001-12-12 | 2003-11-04 | Visteon Global Technologies, Inc. | Fuel pump impeller for high flow applications |
DE10249244B4 (de) * | 2002-10-23 | 2014-04-10 | DüRR DENTAL AG | Laufrad für eine Seitenkanalmaschine |
US6984099B2 (en) * | 2003-05-06 | 2006-01-10 | Visteon Global Technologies, Inc. | Fuel pump impeller |
US7033137B2 (en) * | 2004-03-19 | 2006-04-25 | Ametek, Inc. | Vortex blower having helmholtz resonators and a baffle assembly |
DE202004019506U1 (de) * | 2004-12-17 | 2006-04-20 | Nash_Elmo Industries Gmbh | Seitenkanalverdichter |
JP4996985B2 (ja) * | 2007-06-04 | 2012-08-08 | 株式会社日立産機システム | 渦流ブロワ |
JP2011140884A (ja) * | 2010-01-05 | 2011-07-21 | Teral Inc | 渦流ブロワ |
US9200635B2 (en) * | 2012-04-05 | 2015-12-01 | Gast Manufacturing, Inc. A Unit Of Idex Corporation | Impeller and regenerative blower |
DE102014106440A1 (de) * | 2014-05-08 | 2015-11-12 | Gebr. Becker Gmbh | Laufrad, insbesondere für eine Seitenkanalmaschine |
US10502178B2 (en) * | 2017-03-10 | 2019-12-10 | Regents Of The University Of Minnesota | In-bank veritcal axis hydropower system |
-
2016
- 2016-01-29 EP EP16153453.2A patent/EP3199816B1/de active Active
- 2016-01-29 DK DK16153453.2T patent/DK3199816T3/da active
- 2016-01-29 ES ES16153453T patent/ES2881049T3/es active Active
- 2016-01-29 PL PL16153453T patent/PL3199816T3/pl unknown
-
2017
- 2017-01-25 US US15/415,282 patent/US20170218971A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060269394A1 (en) * | 2005-05-27 | 2006-11-30 | Shizu Ishikawa | Blower |
Also Published As
Publication number | Publication date |
---|---|
EP3199816A1 (de) | 2017-08-02 |
PL3199816T3 (pl) | 2021-11-29 |
US20170218971A1 (en) | 2017-08-03 |
DK3199816T3 (da) | 2021-07-26 |
ES2881049T3 (es) | 2021-11-26 |
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