EP1624191B1 - Ventilateur à canal latéral - Google Patents

Ventilateur à canal latéral Download PDF

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Publication number
EP1624191B1
EP1624191B1 EP04425593A EP04425593A EP1624191B1 EP 1624191 B1 EP1624191 B1 EP 1624191B1 EP 04425593 A EP04425593 A EP 04425593A EP 04425593 A EP04425593 A EP 04425593A EP 1624191 B1 EP1624191 B1 EP 1624191B1
Authority
EP
European Patent Office
Prior art keywords
rotor
manifold
blower
blades
blower according
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
Application number
EP04425593A
Other languages
German (de)
English (en)
Other versions
EP1624191A1 (fr
Inventor
Luis Sagastegui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fpz Effepizeta Srl
Original Assignee
Fpz Effepizeta Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fpz Effepizeta Srl filed Critical Fpz Effepizeta Srl
Priority to EP04425593A priority Critical patent/EP1624191B1/fr
Priority to AT04425593T priority patent/ATE350582T1/de
Priority to DE602004004102T priority patent/DE602004004102T2/de
Publication of EP1624191A1 publication Critical patent/EP1624191A1/fr
Application granted granted Critical
Publication of EP1624191B1 publication Critical patent/EP1624191B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/12—Multi-stage pumps
    • F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
    • F04D17/125—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors the casing being vertically split

Definitions

  • the invention relates to centrifugal blowers, also known as regenerative blowers, used for supplying the airflow for furnaces or in other industrial applications.
  • blowers consist of a rotor caused to rotate by a motor, generally electric, having the form of a disc on the edge of which the blades are arranged.
  • the latter move inside a toroidal chamber formed in the stator, which communicates with a suction channel and a delivery channel situated on one side of the motor, parallel to the axis of rotation.
  • the blading In the operation of side channel blowers, the blading imparts pressure to the air or other fluid processed, forcing it to circulate in a spiral path along the toroidal chamber.
  • the configuration of the blading significantly affects the performance of side channel blowers; however, there are also other factors having a decisive effect, especially if it is wished to increase the flow rate or the pressure of the fluid processed by the blower.
  • blowers which use two stages in parallel to have a higher flow rate, or in series to achieve greater delivery pressure; however, it does not follow that doubling the rotors also doubles the flow rate or pressure of the air, whereas it is certain that it does increase the complexity of the machine.
  • a side channel blower according to the preamble of claim 1 is known from US Pat. 6, 394, 748 and from US Pat. 3, 963, 371.
  • the technical problem addressed by the present invention is therefore that of overcoming the disadvantages of currently known blowers; the concept for solving this problem consists in producing a machine with modular stages, that is stages which may be used singly, or connected in series or parallel. This technical problem is achieved by the features of claim 1.
  • the blower is characterised in that the suction and discharge of the air from each stage are obtained by means of manifolds which divide the flow of air so as to match the operation of the stages in series or in parallel.
  • the number 1 indicates as a whole a blower according to the invention, having an outer casing 2 in which an electric motor 3 of known type is housed.
  • the latter drives a shaft 4 to which are keyed a cooling fan 5 at one end and a rotor 6 for processing the air at the opposite end.
  • the rotor 6 is constituted by a central disc 8 which extends from the hub 9 to a peripheral ring 10, along which are located the blades 12; these have a convex spoon shape and are divided in the median plane by a baffle 14 constituted by a tapering elongation of the ring 10, which extends as far as the ends of the blades 12.
  • the blades 12 of the rotor move in a toroidal chamber 15 formed between a body 16 attached with screws to the casing 2 and a cover 18 attached to the above-mentioned body; the body 16 and the cover 18 constitute respective shells of a casing which contains the rotor: given their substantially equal form, only the first of these will be described hereafter with reference to figures 4-6 and what will be stated shall be understood valid also for the second.
  • the body 16 is equipped externally with radial ribs 20 and peripheral ribs 21 , while internally it has an annular cavity 23 which forms the internal wall of the toroidal chamber 15.
  • the manifolds 27 and 28 are constituted by respective walls 37 and 38 having a substantially semicircular shape (cf. figures 4 and 5) so that they are open at the top thereby facilitating the passage of the air towards the ports 25 and 26.
  • Each of the semicircular walls 37 and 38 is surrounded by a space 39 and 40, whose function will become clearer in what follows when dealing with the blower with two stages in parallel; in the blower with only one stage of figure 1, the above-mentioned spaces are instead closed by the acoustic insulation 42 present in the side channels 29, 30 for suction and delivery.
  • the cavity 23 has a shape matching that of the blades 12 (cf. figure 1); this is made to form a labyrinth seal between the two ports, enabling the air to be discharged through the above-mentioned ports during operation of the blower which takes place as follows.
  • the blades 12 drive the air along opposite sides with respect to the baffle 14: the latter therefore acts as a dividing wall which prevents interference in the movement of the air that may cause pressure losses.
  • baffle 14 and the blades 12 have the same radial height, thus creating uniform conditions both with respect to the median plane and with respect to the outer circumference of the rotor 6.
  • the radial height of the baffle and of the blades is smaller compared with that of the toroidal chamber 15, so as to maintain the same pressure on both sides of the rotor.
  • Air is sent to the delivery channel 30 at each revolution of the rotor, through the port 26; the latter is arranged to the side with respect to the blades 12, while the manifold 28 is in a tangential position relative to the path of the blades and is configured with a semicircular cross-section.
  • This provides for the discharge of the air from the toroidal chamber 15, because the side port 26 is adjacent to it and there are no obstacles to overcome or ducts to run through while the position and semicircular shape of the manifold 28 assist the centrifugal component of the velocity of the air, so as to make full use of the associated energy and not lose pressure.
  • FIGS 7-10 The first of these is shown in figures 7-10, which give various views of a blower with two stages S, S' connected in series, the parts already seen in the previous example being indicated by the same reference numbers, while the new ones are distinguished by an apostrophe.
  • the suction channel 29 is no longer arranged horizontally by the side of the electric motor 3, but is vertical and positioned at the end of the blower; the latter is equipped with an added compression stage, which comprises a rotor 6' keyed onto the shaft 4 next to the other rotor 6 and identical thereto.
  • the blower 6' is housed in a body 16' closed by a cover 18', identical to those of the adjacent rotor but rotated with respect to them by an angle ⁇ (figure 8) so as to line up the outlet manifold 28' of the first stage with the inlet manifold 27 of the other stage (cf. figure 10); in this way, the two stages are connected in series with each other.
  • each stage S, S' of this blower is identical to that of the preceding case, so that for the sake of brevity reference may be made to what has already been said; it is in any case clear that at the delivery outlet of the blower there will be a pressure approximately double compared with that of a single stage blower.
  • blower in modular form, obtained by using a longer shaft 4 so as to be able to fit the two identical rotors 6, 6', and adding, compared with the previous single stage blower, the cover 18 and the body 16' identical to each other and connected in series simply by rotating one relative to the other.
  • the modular structure designed in this way is also suitable in principle for producing blowers with three or more stages; all that is required for this purpose is to add to the shaft 4 a rotor housed between a body and a cover like those described, offset angularly relative to the adjacent ones according to the description just given.
  • the channel 29 advantageously has a cross-section equal to that of the manifold 37 with the associated space 39, to which it is joined by means of a coupling 47 (the latter might also not be needed if the channel 29 had a diameter such that it could be aligned with the manifold 27).
  • the modular embodiment of the blower provides a simple two-stage machine which differs from the previous ones only by a few parts.
  • blower according to the invention has been described in this example for blowing air, it can in any case be used with other gases and may also be used to generate vacuum; for this purpose, it is only necessary to connect its inlet channel to the volume in which the vacuum is to be produced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Massaging Devices (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Claims (9)

  1. Ventilateur à canal latéral comprenant :
    une chambre toroïdale (15) dans laquelle on trouve au moins un orifice d'entrée (25) et un orifice de sortie (26) pour l'air ou un autre fluide traité ;
    un rotor (6) avec une pluralité d'aubes périphériques (12) qui s'étendent dans la chambre toroïdale (15) ;
    un canal d'aspiration (29) et un canal de refoulement (30) communiquant respectivement avec l'orifice d'entrée (25) et l'orifice de sortie (26) de la chambre toroïdale (15), dans lequel
    chacun desdits orifices (25, 26) est associé à un collecteur tubulaire (27, 28) respectif s'étendant de manière transversale au plan médian du rotor raccordé à l'un desdits canaux (29, 30) au niveau d'une extrémité et capable d'être raccordé à un autre collecteur (27', 28') au niveau de l'autre extrémité,
    et caractérisé en ce que :
    il comprend un corps (16 ; 16') et un couvercle (18, 18') placés côte à côte pour former la chambre toroïdale (15) entre eux, dans lequel le collecteur (27, 28 ; 27', 28') est constitué par des parties formées d'un seul tenant respectivement dans ledit corps (16, 16') et le couvercle (18, 18')
  2. Ventilateur selon la revendication 1, dans lequel chaque collecteur (27, 28) a une section transversale ouverte au niveau de l'extrémité ayant l'orifice (25, 26) associé avec celui-ci.
  3. Ventilateur selon les revendications 1 et 2, dans lequel autour de chaque collecteur (27, 28 ; 27', 28') on trouve un espace (39, 40 ; 39', 40')
  4. Ventilateur selon les revendications précédentes, dans lequel les orifices d'entrée et de sortie (25, 26) sont formés dans la paroi de la chambre toroïdale (15) dans une position à côté des aubes (12) du rotor (6).
  5. Ventilateur selon la revendication 1, dans lequel une pluralité d'étages (S, S') chacun comprenant un corps (16, 16'), un couvercle (18, 18') et le rotor (6, 6') associé, sont montés sur le même arbre (4) et sont raccordés en série entre eux en les décalant de manière angulaire les uns par rapport aux autres, afin de raccorder le collecteur de sortie (28') et le collecteur d'entrée (27) respectif.
  6. Ventilateur selon la revendication 1, dans lequel une pluralité d'étages (S, S') chacun comprenant un corps (16, 16'), un couvercle (18, 18') et le rotor (6, 6') associé sont montés sur le même arbre (4) avec les collecteurs d'entrée (27, 27') et les collecteurs de sortie (28, 28') respectifs, raccordés entre eux, et dans lequel les canaux d'aspiration et de refoulement (29, 30) ont une section transversale égale à celle desdits collecteurs plus celle des espaces (39, 40 ; 39', 40') les entourant.
  7. Ventilateur selon l'une quelconque des revendications précédentes, dans lequel entre les aubes (12, 12') d'au moins un rotor (6, 6') on trouve un déflecteur (14, 14') ayant la même hauteur radiale que les aubes, qui divise les surfaces de celles-ci en deux et qui s'étend dans un plan transversal par rapport à l'axe de rotation du rotor.
  8. Aube selon la revendication 7, dans laquelle le déflecteur (14, 14') est constitué par la prolongation progressivement rétrécie d'une bague (10, 10') du rotor (6, 6').
  9. Ventilateur selon la revendication 8, dans lequel le déflecteur (14, 14') se trouve dans un plan médian des aubes (12, 12').
EP04425593A 2004-08-02 2004-08-02 Ventilateur à canal latéral Active EP1624191B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04425593A EP1624191B1 (fr) 2004-08-02 2004-08-02 Ventilateur à canal latéral
AT04425593T ATE350582T1 (de) 2004-08-02 2004-08-02 Seitenkanalverdichter
DE602004004102T DE602004004102T2 (de) 2004-08-02 2004-08-02 Seitenkanalverdichter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04425593A EP1624191B1 (fr) 2004-08-02 2004-08-02 Ventilateur à canal latéral

Publications (2)

Publication Number Publication Date
EP1624191A1 EP1624191A1 (fr) 2006-02-08
EP1624191B1 true EP1624191B1 (fr) 2007-01-03

Family

ID=34932690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04425593A Active EP1624191B1 (fr) 2004-08-02 2004-08-02 Ventilateur à canal latéral

Country Status (3)

Country Link
EP (1) EP1624191B1 (fr)
AT (1) ATE350582T1 (fr)
DE (1) DE602004004102T2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2132445A1 (fr) * 2007-03-30 2009-12-16 Gebr. Becker GmbH Compresseur à canal latéral et procédé de fonctionnement associé
DE102015202947A1 (de) * 2015-02-18 2016-08-18 Mahle International Gmbh Pumpvorrichtung zum Antreiben von Blow-by-Gas
DE102015202943A1 (de) * 2015-02-18 2016-08-18 Mahle International Gmbh Pumpvorrichtung zum Antreiben von Blow-by-Gas
DE102015202948A1 (de) * 2015-02-18 2016-08-18 Mahle International Gmbh Pumpvorrichtung zum Antreiben von Blow-by-Gas
DE102015202946A1 (de) 2015-02-18 2016-08-18 Mahle International Gmbh Pumpvorrichtung zum Antreiben von Blow-by-Gas
DE102015209561A1 (de) * 2015-05-26 2016-12-01 Mahle International Gmbh Pumpvorrichtung und Kurbelgehäuseentlüftungseinrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1875419A (en) * 1932-09-06 claypool
US3963371A (en) * 1975-07-24 1976-06-15 Roy E. Roth Company Multi-stage pump
DE2721233C2 (de) * 1977-05-11 1979-02-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Aus mehreren Verdichterstufen bestehender Seitenkanalverdichter
US5011369A (en) * 1987-12-28 1991-04-30 Aisan Kogyo Kabushiki Kaisha Regenerative pump
US5718561A (en) * 1994-11-22 1998-02-17 Siemens Aktiengesellschaft Side channel compressor
DE19736678A1 (de) * 1997-08-22 1999-02-25 Rietschle Werner Gmbh & Co Kg Mehrstufige Seitenkanalpumpe

Also Published As

Publication number Publication date
DE602004004102D1 (de) 2007-02-15
DE602004004102T2 (de) 2007-07-12
EP1624191A1 (fr) 2006-02-08
ATE350582T1 (de) 2007-01-15

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