DE102012105064B4 - Pressure wave charger with cell rotor and method for producing the cell rotor - Google Patents

Abstract

The present invention relates to a pressure wave supercharger with a cell rotor (1) and a method for manufacturing the cell rotor (1), with a meandering separating plate (3) for separating the cells (15) in different, superimposed chamber rows arranged in the radial direction (R) ) is used.

Description

The present invention relates to a pressure wave loader comprising a cell rotor shell and a rotatable rotatable cell rotor according to the features in the preamble of patent claim 1.

The present invention further relates to a method for producing a cell rotor according to the features in claim 7.

Moreover, the present invention relates to a method for producing a cell rotor according to the features in claim 8.

From the prior art it is known to increase the efficiency of an internal combustion engine to charge it. Here, the charge air is precompressed and then introduced with respect to the atmospheric pressure increased pressure in a cylinder. As Aufladetypen example, compressors, turbochargers or even pressure wave superchargers are known.

In a pressure wave supercharger rotates within a cell rotor housing, a cell rotor, wherein the gas excreted by the internal combustion engine exhaust gas enters the cell rotor by a gas-dynamic process, compressed in the cell rotor itself sucked fresh air and then the compressed fresh air of the internal combustion engine supplies. Subsequently, the exhaust gas, which was used to compress the fresh air was fed into an exhaust line.

The efficiency of the pressure wave loader itself depends largely on the cell geometry of the cell rotor and its accuracy in the passage of the cells to the respective channels 1 to 4 of the pressure wave supercharger and further from the inertia of the cell rotor. It is therefore worthwhile a cell rotor with the lowest possible weight, high component precision and exact component dimensions desirable.

This is for example from the DE 10 2007 037 424 B4 a cell rotor is known in which on a rotor hub from inside to outside extending a plurality of chamber rows are formed and in a respective chamber row radially surrounding several cells are formed. For separating the cells with one another, dividing walls are arranged in the chamber row, which then separate a multiplicity of cells from one another in each chamber row. In particular, the production of such a known cell rotor is problematic because complex joining processes are to be used to produce the component with sufficient accuracy. In the operation of the cell rotor this is sometimes exposed to hot and highly corrosive exhaust gases, which can reach temperatures of up to more than 600 ° C, especially up to more than 900 ° C. It is thus likewise desirable to provide a cell rotor which has sufficient component stability even during intensive and years of use, so that it does not fail due to material failure.

Furthermore, from the WO 2010/057319 A1 a method for producing a cellular wheel is known in which a plurality of dividers are fastened to a base plate and then the base plate is wound, so that there is a round cell rotor. Although such a manufacturing method allows access to the sometimes small space between the individual partitions, but is due to the subsequent subsequent winding and the final coupling of the base plate error prone due to a coupling seam, in particular by the Aufwicklungsprozess an imbalance can be formed.

Also the WO 2012/059372 A1 shows a method for producing a cellular wheel made of metal with lying concentrically to a rotation axis sleeves and arranged between successive sleeves, radially aligned to the rotation axis lamellae, which are joined with an end edge with a sleeve and before joining the free end edges with a subsequent sleeve in be fixed in their angular position. The main disadvantage of the described cellular wheel is that the lamellae are arranged substantially perpendicularly, thus creating a structure susceptible to wear.

Also the CH 405 827 A discloses a cellular wheel of a gaseous working fluid pressure wave machine. This pressure wave machine is based on the mechanism of a cell machine, in which takes place by direct action of a gaseous working fluid pressure increase of a second gaseous working fluid. A disadvantage of this embodiment is that between two separate sleeves, a meander-shaped sheet is introduced, which designed the separation areas between the two sleeves.

In the DE 200 13 920 U1 a catalyst is shown, which consists of a housing and disposed in this housing honeycomb and wound sheet metal strip.

It is therefore an object of the present invention, starting from the state of the art, to provide a cell rotor for a pressure wave supercharger that can be produced more cost-effectively compared with cell rotors known from the prior art, and has a higher durability and a low dead weight as well as an improved dynamic behavior. It is a further object of the invention to provide a method for producing such a cell rotor.

The aforementioned object is achieved according to the invention with a pressure wave loader having a cell rotor shell and a rotatably mounted therein cell rotor according to the features in claim 1.

The procedural portion of the object is further achieved by a method according to the features in claim 7. An alternative embodiment of the manufacturing method according to the invention is further shown according to the features in claim 8.

The pressure wave loader according to the invention has a cell rotor shell and a rotatable cell rotor arranged therein, wherein the cell rotor in the radial direction has at least two superposed rows of chambers, wherein in a row of chambers next to each other lying separate cells are arranged. In a row of chambers, a meander-shaped separating plate running around the axis of rotation of the cell rotor is arranged, wherein the meander-shaped separating plate has webs oriented in the radial direction of the cell rotor, wherein transition areas are formed between the webs and wherein the webs separate the individual cells from one another.

In addition, the cell rotor according to the invention is formed from a one-piece and material-uniform sheet metal blank. For this purpose, the sheet metal blank is first divided into smooth and meandering lengths and then wound so that the rotor hub is first wound by a rotation of a smooth length, in a following revolution, the first chamber row is wound by a meandering partition on the rotor hub, in a third Rotation the first separating sleeve is wound from a smooth length on the first chamber row and in a fourth revolution, a second chamber row is wound by a second meandering partition on the first separation sleeve and in a further rotation by a smooth length section, a second separation sleeve on the second meandering partition is wound. In the context of the invention, it is also possible to start directly with the first chamber row, so that the rotor hub is omitted as a winding component and a rotor hub is provided for example from a cylindrical hollow body. As a result, the cell rotor can be provided in a very cost-effective manner with simultaneously high precision and optimized wall thickness. The chamber rows of the cell rotor are annular in one another. Each chamber row is formed in particular kreisabschnittsrund, wherein on a rotor hub, a first chamber row is arranged, which is enclosed by a second chamber row, which in turn is surrounded by a third row of cameras circular segment.

In the individual chamber rows themselves, cells are then distributed radially all around, the cells being separated from one another by respective dividing webs. In particular, the cells are each separated from each other gas-tight. According to the invention, the separation takes place by means of a meandering separating plate arranged in a respective chamber row. The meander-shaped separating plate has a substantially sinusoidal course, so that a wave trough follows on a web oriented in the radial direction, the wave trough in turn follows a web and a wave crest follows the web. This then continues periodically over the entire course of the separating plate. In particular, the separating plate is designed as a corrugated metal sheet.

In the context of the invention, however, it is not absolutely necessary that in each case results in a round course between the webs. The transition from a bridge to wave trough, from wave trough to bridge and bridge to wave mountain turn from wave mountain to another bridge can also be formed with only small bending radii and / or done by folding, so that in the latter case between Wellenberg and bridge and bridge and wave trough yields an angle.

In the context of the invention, the meander-shaped separating plate is arranged in the chamber row such that the webs are oriented substantially in the radial direction. As a result, the trough is formed with a smaller radius than is the case with the wave crest. Also, the wave crest in this case is wider than the wave trough. This then in turn results in the orientation of the web in the radial direction.

In the context of the invention, it is possible that the cells of the individual chamber rows are superimposed in the radial direction, in particular, the cells of the chamber rows extend in a circular section. This means that the radially outer, adjacent cell is formed larger than the cell relative to the radial direction underlying cell. The cells then expand from inside to outside, so that the webs are again oriented in the radial direction and in each case two webs of a cell are formed at an angle to each other.

In the context of the invention, however, it is also possible that the individual webs of different chamber rows are offset from one another. This means that the cells of the chamber row lying in the radial direction are offset with respect to the cells of a chamber row lying radially on the outside.

The inventive arrangement of a meander-shaped separating plate in a respective chamber row, it is possible to form the cell rotor with a particularly low weight. In particular, wall thicknesses are realized by the use of the meander-shaped sheet, which are smaller than 0.5 mm, in particular less than 0.4 mm, more preferably less than 0.3 mm and most preferably less than 0.2 mm are formed.

Due to the wave crests and wave troughs, the webs are at a fixed distance from one another, so that the wave crests and / or wave troughs on the respective outer circumferential surfaces or inner jacket surfaces of separating sleeves preferably have to be adhesively fixed exclusively. This means that the meander-shaped separating plate does not slip on the whole, but that the relative fixing of the webs with each other via wave crests and wave troughs takes place. This makes it possible to form the cell rotor with a low weight, so that the cell rotor during acceleration or deceleration processes has a higher dynamics.

In the context of the invention it is also easier to produce the cell rotor, since the meander-shaped separating plate is inserted into the chamber row and / or wound up. Elaborate joining operations of individual dividers and associated welding operations and optionally production tolerances omitted according to the invention. This reduces production costs while increasing production accuracy.

Further preferably, a separating sleeve is arranged between two rows of chambers, wherein the separating sleeve is formed as a cylindrical hollow body. On the inside, a cell rotor hub is arranged in particular in the cell rotor, the cell rotor hub being in particular circular, very particularly preferably a cylindrical hollow body. The cell rotor hub is then circumferentially encompassed by a first row of chambers. The first row of chambers is in turn encompassed in the invention by a separating sleeve such that the separating sleeve wound on the first row of chambers and / or postponed, the latter case in particular is pressed. In the context of pushing, in particular pressing, it is possible to form the separating sleeve in particular as a seamless hollow body. A seamless hollow body has the advantage that it has no imbalance due to a weld. Furthermore, an optimized wall thickness, in particular a wall thickness of less than 1 mm, preferably less than 0.8 mm and in particular less than 0.5 mm can be realized on the seamless hollow body. In turn, a second meander-shaped separating plate is then in turn pushed onto a first separating sleeve, in particular pressed on, followed in turn by a second separating sleeve. This also makes it possible, in particular to provide a cell rotor, which has an improved response due to a lower dead weight and non-existing imbalances and associated higher dynamics.

In a further preferred embodiment variant of the present invention, the wave troughs are coupled to an outer lateral surface of the separating sleeve underneath and / or the wave crests are coupled to an inner lateral surface of the separating sleeve located above. Below lying and lying above is to be understood in each case in the radial direction, starting from the rotor hub as a reference point.

The coupling is in particular a cohesive coupling, very particularly preferably a thermal joining and in particular a welding process or a soldering process. The coupling can be formed in the context of the invention as adhesive coupling, for example by welding points. In the context of the invention, however, it is also possible to form the coupling as a longitudinal seam which extends completely in the axial direction of the cell rotor. On the one hand, a higher precision of the individual components relative to one another is achieved by the coupling, in particular under thermal stress, so that there is no or negligible distortion of the individual cell dividing walls, formed by the coupling meandering course of the separating plate takes place. This in turn increases the precision of the manufactured cell rotor, which has an advantageous effect on the performance of the pressure wave supercharger and the required accuracy, in particular the adjusting gap dimensions.

In the context of the invention, in particular, the meander-shaped separating plate and / or the separating sleeves are formed from a material which has the following alloy constituents, expressed in% by weight: nickel (Ni) minute 58.00% chrome (Cr) 20:00 to 11:00 p.m.% molybdenum (Not a word) 8:00 to 10:00% niobium (Nb) 3:15 to 4:15% iron (Fe) Max. 5.00% carbon (C) Max. ≤ 0.10% manganese (Mn) Max. 00:50% silicon (Si) Max. 00:50% sulfur (S) Max. 0.015% aluminum (Al) Max. 0.40% titanium (Ti) Max. 0.40% phosphorus (P) Max. 0.015% cobalt (Co) Max. 00:50% the remainder being composed of impurities caused by melting.

Such a material alloy proves to be particularly advantageous for the cell rotor according to the invention, since the material is on the one hand temperature resistant, on the other hand is resistant to the highly corrosive properties of the flowing through the pressure wave supercharger exhaust gas. At the same time, however, such a composite material can be processed very well, especially in terms of weldability and moldability and he has a low specific weight.

This makes it possible that wall thicknesses are realized in the separating plate and / or the separating sleeves, which are between 0.01 mm and in particular 0.3 mm, very particularly preferably between 0.05 mm and 0.25 mm and most preferably from 0 , 1 mm to 0.2 mm are formed.

• – Bereitstellen einer Rotornabe,
• – Bereitstellen eines mäanderförmigen Trennbleches,
• – Aufwickeln des Trennbleches auf die Rotornabe oder Aufwickeln des Trennbleches und Aufschieben auf die Rotornabe,
• – Koppeln des mäanderförmigen Trennbeches mit der Außenmantelfläche der Rotornabe in den Wellentälern,
• – Aufschieben, insbesondere Aufpressen einer Trennhülse auf die Wellenberge,
• – optionales Koppeln der Wellenberge mit einer Innenmantelfläche der Trennhülse,
• – Bereitstellen eines zweiten mäanderförmigen Trennbleches,
• – Aufwickeln des Trennbleches auf die Rotornabe oder Aufwickeln des Trennbleches und Aufschieben auf die Rotornabe,
• – Koppeln des mäanderförmigen Trennbeches mit der Außenmantelfläche der Rotornabe in den Wellentälern
• – Aufschieben, insbesondere Aufpressen einer zweiten Trennhülse auf die Wellenberge,
• – optionales Koppeln der Wellenberge mit einer Innenmantelfläche der zweiten Trennhülse.

The procedural part of the object is further provided with a method for producing a cell rotor of a pressure wave loader having a cell rotor shell and rotatably mounted therein a cell rotor, wherein the cell rotor in the radial direction at least two superimposed rows of chambers, wherein in a row of chambers side by side separate cells are arranged in a meander-shaped separating plate, which runs radially around the rotational axis of the cell rotor, is arranged in a chamber row and the meander-shaped separating plate has webs oriented in the radial direction, wherein transition regions are formed between the webs and wherein the webs form the individual cells (FIG. 15 ) separated from each other by the following method steps:

• Providing a rotor hub,
• Providing a meander-shaped separating plate,
• Winding the separating plate onto the rotor hub or winding up the separating plate and sliding it onto the rotor hub,
• Coupling the meandering separating cup to the outer circumferential surface of the rotor hub in the troughs,
• - pushing, in particular pressing a separating sleeve on the wave crests,
• Optional coupling of the wave crests with an inner circumferential surface of the separating sleeve,
• Providing a second meander-shaped separating plate,
• Winding the separating plate onto the rotor hub or winding up the separating plate and sliding it onto the rotor hub,
• - Coupling of the meandering Trennbeches with the outer surface of the rotor hub in the troughs
• Pushing on, in particular pressing on a second separating sleeve on the wave crests,
• - Optional coupling of the peaks with an inner circumferential surface of the second separation sleeve.

In the context of the invention it is possible to repeat for a third, fourth, fifth, sixth or even further chamber row according to the method steps for applying a further meander-shaped separating plate, with optional coupling and application of a further separating sleeve.

In the context of the invention, the wave crests and / or wave troughs are particularly preferably coupled to the respective separating sleeve at least in sections. For this purpose, in particular a laser welding method is used, wherein the coupling is carried out for fixing by means of spot welds or else for complete fixing by means of longitudinal welding seams. The longitudinal welds extend in particular in the axial direction of the cell rotor.

• – Bereitstellen eines länglichen Blechstreifens,
• – Abschnittsweises Erzeugen einer mäanderförmigen Struktur in dem Blechstreifen, wobei flache Abschnitte zwischen zwei mäanderförmigen Strukturen verbleiben,
• – Aufwickeln des Bearbeiteten Blechstreifens, wobei ein erster flacher Abschnitt zu der Rotornabe als Hohlzylinder aufgewickelt wird,
• – Aufwickeln des einstückig mit der Rotornabe verbundenen ersten mäanderförmigen Abschnittes auf die Außenmantelfläche der Rotornabe,
• – optionales thermisches Fügen der Wellentäler mit der Außenmantelfläche der Rotornabe,
• – Aufwickeln eines einstückig mit dem ersten mäanderförmigen Abschnitt verbundenen zweiten flachen Abschnittes und erzeugen einer Trennhülse, die den ersten mäanderförmigen Abschnitt umgibt,
• – optionales thermisches Fügen der Innenmantelfläche der Trennhülse mit den Wellenbergen des ersten mäanderförmigen Abschnittes,
• – Aufwickeln eines einstückig mit dem zweiten flachen Abschnittes gekoppelten zweiten mäanderförmigen Abschnittes auf die Trennhülse,
• – optionales thermisches Fügen der Wellentäler mit der Außenmantelfläche der ersten Trennhülse,
• – Aufwickeln eines einstückig mit dem zweiten mäanderförmigen Abschnitt verbundenen dritten flachen Abschnittes und erzeugen einer zweiten Trennhülse, die den zweiten mäanderförmigen Abschnitt umgibt,
• – optionales thermisches Fügen der Innenmantelfläche der zweiten Trennhülse mit den Wellenbergen des zweiten mäanderförmigen Abschnittes,

The procedural part of the object is further achieved by an alternative production method by the following method steps:

• Providing an elongated sheet metal strip,
• Section-wise generation of a meandering structure in the sheet metal strip, wherein flat sections remain between two meandering structures,
• Winding the processed sheet metal strip, wherein a first flat section is wound up to the rotor hub as a hollow cylinder,
• Winding the first meander-shaped section integrally connected to the rotor hub onto the outer circumferential surface of the rotor hub,
• Optional thermal joining of the troughs with the outer circumferential surface of the rotor hub,
• Winding a second flat section integrally connected to the first meandering section and producing a separating sleeve surrounding the first meandering section,
• Optional thermal joining of the inner lateral surface of the separating sleeve to the wave crests of the first meandering section,
• Winding a second meander-shaped section, which is integrally coupled with the second flat section, onto the separating sleeve,
• Optional thermal joining of the troughs with the outer circumferential surface of the first separating sleeve,
• Winding a third flat section integrally connected to the second meandering section and producing a second separating sleeve surrounding the second meandering section,
• Optional thermal joining of the inner circumferential surface of the second separating sleeve with the wave crests of the second meandering section,

By means of the alternative production method according to the invention, it is possible to produce the cell rotor, in particular in one piece and of the same material, from a sheet metal strip, in particular from an elongate sheet metal blank by winding.

In the context of the invention, the metal strip is divided over its length into different sections, which are formed by flat and meander-shaped longitudinal sections. The flat longitudinal section is used in particular for producing a separating sleeve and / or rotor hub and the respective meandering longitudinal section is used to form the respective chamber row. In the context of the invention, length sections are thus produced on the blank, which are formed longer with increasing winding direction, so that, for example, the first chamber row has a smaller number and / or smaller cells than the second chamber row. The same applies to the separating sleeve, the first, relative to the radial direction inner separating sleeve thus has a smaller diameter than the radial direction with respect to the outer second separating sleeve.

In the context of the invention, it is also possible to provide a rotor hub as a separate component, in which case a one-piece metal strip is wound onto the rotor hub and both the meander-shaped separating structures and the flat cylinder structures are produced by the metal strip.

In the context of the invention, the alloy according to the invention is then likewise to be used as a possible material in the case of an integrally wound cell rotor.

In the context of the invention, the thermal joining is carried out in particular as laser welding. It is possible, already during the winding process on each of the outer surface of the Rotor hub or the separating sleeve, the next, coming to rest wave trough with this at least adherent, preferably longitudinally welded. This ensures that no unwanted deformation of the meandering sheet occurs during the winding process such that, for example, the wave trough shifts during the further winding process relative to the outer circumferential surface of the underlying rotor hub or separating sleeve.

In the context of the invention, furthermore, a respective flat section is wound onto the meander-shaped section of the chamber row situated below the radial direction with the generation of a prestress, in particular a press fit or transition fit being produced by the winding process. Due to the thus configured winding process, the pressure wave loader is produced with high precision due to the positive interference fit, whereby the thermal expansions in the operating behavior are thereby limited to a negligible extent.

In the context of the invention, it is furthermore particularly advantageous if the sheet metal strip is produced for subsequent winding of the cell rotor in such a way that it has different wall thicknesses extending over its length. In particular, the wall thicknesses of the flat longitudinal sections for producing the rotor hub or separating sleeves are made larger than the wall thickness of the meandering longitudinal section. This makes it possible due to the lower wall thickness in the meandering length section to produce a better formability, which due to the greater wall thickness in the region of the rotor hub or separating sleeve of the cell rotor receives sufficient rigidity.

Further advantages, features, characteristics and aspects of the present invention are part of the following description. Preferred embodiments are shown in the schematic figures. These are for easy understanding of the invention. Show it:

1 a front perspective view of a cell rotor according to the invention;

2 an inventive meander-shaped separating plate in a perspective front view;

3 a cell rotor according to the invention in an exploded view;

4 a detailed view of a cell rotor according to the invention and

5a and b is a schematic diagram of a production method according to the invention.

In the figures, the same reference numerals are used for the same or similar components, even if a repeated description is omitted for reasons of simplicity.

1 shows a perspective top view of a cell rotor according to the invention 1 , wherein the cell rotor 1 is constructed in the radial direction R from the inside to the outside by subsequent structural components. Inside is a cell rotor hub 2 arranged, by a first meandering separating plate 3 is enclosed in a circle. The first meandering partition 3 is again from a first separation sleeve 4 enclosed in a circle, taking on the first separating sleeve 4 a second meander-shaped separating plate 5 follows. On the second meandering separating plate 5 again follows a second separating sleeve 6 followed again by an outer, final third separating sleeve 7 , Shown in the center is inside the cell rotor hub 2 a warehouse 8th that the cell rotor 1 rotatably supported by a non-illustrated, arranged centrally in the bearing in the bearing axis of rotation rotatably supports.

Exemplary is in 2 in a perspective front view of a meander-shaped separating plate 3 shown. The meandering separating plate 3 points to the radial direction R lying inside troughs 9 on and outside lying wave mountains 10 , Between the troughs 9 and wave mountains 10 webs extend 11 in that the separating cells which are adjacent to the inside and outside separate the respective cells of a chamber row from one another. Shown is that the webs 11 themselves oriented in the radial direction R, so that the wave crests 10 are formed wider than the troughs 9 ,

3 shows a cell rotor according to the invention 1 in an exploded view, the cell rotor 1 made of cellular rotor hub 2 , a first divider 3 , a first separating sleeve 4 , a second divider 5 and a second separating sleeve 6 is trained. In the embodiment variant shown here, the first separating plate 3 on the rotor hub 2 deferred, the first separating sleeve 4 on the first divider 3 deferred, that second separating plate 5 on the first separating sleeve 4 pushed on and the second separating sleeve 6 on the second divider 5 postponed.

Optional are the wave crests 10 and / or troughs 9 , as in 4 represented, with an outer circumferential surface 12 the cell rotor hub 2 or an inner circumferential surface 13 the first separating sleeve 4 thermally joined. These are welding points 14 provided, which are either applied only point-like adhesive fixation during the manufacturing process or even, not shown in detail, are designed as a longitudinal weld. This will cause the individual cells 15 each chamber row 16 . 17 . 18 separated from each other, the chamber rows 16 . 17 . 18 even through the separating sleeves 4 are separated from each other. The cell rotor 1 according to 4 has three rows of chambers 16 . 17 . 18 on, the exploding in 3 on the other hand, only two rows of chambers. Within the scope of the invention, however, it is possible that a cell rotor 1 is also formed with five, six or seven or more chamber rows. Furthermore, it is possible in the context of the invention that the rows of chambers 16 . 17 . 18 are themselves formed on the radial direction R superimposed, so that all wave crests on a radial axis 10 and all troughs 9 the respective chamber rows 16 . 17 . 18 lie. In the context of the invention, however, it is also possible that the troughs 9 and wave mountains 10 the various chamber rows are arranged offset from one another in such a way that they are formed with a proper offset to each other.

5a and b show an inventive manufacturing method of a one-piece and material uniformly wound cell rotor 1 , where initially an elongated sheet metal strip 19 Provides the sheet metal strip 19 area 20a , b, c and meandering lengths 21a , b, c.

The sheet metal strip thus provided 19 is then on the cell rotor hub shown here 2 wound up, wherein the winding takes place in such a way that the cell rotor hub 2 around the axis of rotation 22 of the cell rotor to be produced 1 is rotated by the rotational movement D. Here then wound the first meandering length section 21a on the cell rotor hub 2 on, then the first flat longitudinal section 20a followed, again followed by the second meandering length section 21b followed again by the second flat length section 20b , then what about the third length sections 20c . 21c continues.

In the context of the invention, it is possible that the wall thicknesses of the different longitudinal sections, in particular the meandering 21 and the flat lengths 20 are the same or the wall thicknesses are different, in particular, the wall thickness w21 of the meandering length sections 21 is less than the wall thickness w20 of the flat lengths 20 ,

According to 5b it is then possible again at the troughs 9 and wave mountains 10 with respect to the radial direction R welding points 14 each with an inner circumferential surface 13 and / or an outer circumferential surface 12 form, so that a position fixation is given.

LIST OF REFERENCE NUMBERS

1

cell rotor

2

Zellrotornabe

3

Divider

4

separating sleeve

5

second separating plate

6

second separating sleeve

7

third separating sleeve

8th

camp

9

trough

10

Wellenberg

11

web

12

Outer jacket surface too 2

13

Inner jacket surface too 4

14

WeldingSpot

15

cell

16

first chamber row

17

second chamber row

18

third chamber row

19

metal strip

20

flat length section

21

Meander-shaped longitudinal section

22

axis of rotation

R

radial direction

Claims (10)

Pressure wave loader comprising a cell rotor shell and rotatably mounted therein a cell rotor ( 1 ), wherein the cell rotor ( 1 ) in the radial direction (R) at least two superimposed rows of chambers ( 16 . 17 . 18 ), in a row of chambers side by side separated cells ( 15 ) are arranged, in a row of chambers a radially around the axis of rotation ( 22 ) of the cell rotor ( 1 ) circumferential meander-shaped separating plate ( 3 ) is arranged and the meandering separating plate ( 3 ) Radially oriented (R) oriented webs ( 11 ), wherein between the webs ( 11 ) Transition areas are formed and wherein the webs ( 11 ) the individual cells ( 15 ), characterized in that the cell rotor ( 1 ) of a one-piece and material-uniform sheet metal strip ( 19 ) is formed such that the sheet metal strip ( 19 ) meandering lengths ( 21 ) and smooth lengths ( 20 ) and to a cell rotor ( 1 ) is wound, so that the meandering longitudinal sections ( 21 ) within a row of chambers ( 16 . 17 . 18 ) are arranged and the smooth longitudinal sections ( 20 ) a separating sleeve ( 4 . 6 . 7 ) train. Pressure wave charger according to claim 1, characterized in that between two rows of chambers ( 16 . 17 . 18 ) the separating sleeve ( 4 . 6 . 7 ), wherein the separating sleeve ( 4 . 6 . 7 ) is designed as a cylindrical hollow body. Pressure wave charger according to claim 1 or 2, characterized in that the transition regions in the radial direction (R) relative to the inside as a wave trough ( 9 ) are formed and that the transition regions in the radial direction (R) outboard as Wellenberg ( 10 ) are formed. Pressure wave charger according to claim 3, characterized in that the troughs ( 9 ) with an outer circumferential surface ( 12 ) of the underlying separating sleeve ( 4 . 6 . 7 ) and / or that the wave crests ( 10 ) with an overlying separating sleeve ( 4 . 6 . 7 ) are coupled. Pressure wave charger according to one of the preceding claims, characterized in that the meander-shaped separating plate ( 3 ) and / or the separating sleeves ( 4 . 6 . 7 ) are formed of a material having the following alloy constituents expressed in weight percent: nickel Ni minute 58.00% chrome Cr 20:00 to 11:00 p.m.% molybdenum Not a word 8:00 to 10:00% niobium Nb 3:15 to 4:15% iron Fe Max. 5.00% carbon C Max. ≤ 0.10% manganese Mn Max. 00:50% silicon Si Max. 00:50% sulfur S Max. 0.015% aluminum al Max. 0.40% titanium Ti Max. 0.40% phosphorus P Max. 0.015% cobalt Co Max. 00:50% Pressure wave charger according to one of the preceding claims, characterized in that the wall thickness of the separating plates ( 3 ) and / or the separating sleeve ( 4 ) is formed between 0.01 and 0.2 mm. Method for producing a cell rotor ( 1 ) of a pressure wave loader comprising a cell rotor jacket and a cell rotor rotatably mounted therein ( 1 ), wherein the cell rotor ( 1 ) in the radial direction (R) at least two superimposed rows of chambers ( 16 . 17 . 18 ), wherein in a chamber row juxtaposed cells ( 15 ) are arranged, in a row of chambers a radially around the axis of rotation ( 22 ) of the cell rotor ( 1 ) circumferential meander-shaped separating plate ( 3 ) is arranged and the meandering separating plate ( 3 ) Radially oriented (R) oriented webs ( 11 ), wherein between the webs ( 11 ) Transition areas are formed and wherein the webs ( 11 ) the individual cells ( 15 ), characterized by the following steps: - providing a rotor hub ( 2 ), - providing a meander-shaped separating plate ( 3 ), - winding the separating plate ( 3 ) on the rotor hub ( 2 ) or winding the separating plate ( 3 ) and sliding on the rotor hub ( 2 ), - coupling of the meandering separating plate ( 3 ) with the outer circumferential surface ( 12 ) of the rotor hub ( 2 ) in the troughs ( 9 ), - pushing on, in particular pressing on a separating sleeve ( 4 ) on the wave mountains ( 10 ), - optional coupling of the wave crests ( 10 ) with an inner circumferential surface ( 13 ) of the separating sleeve ( 4 ), - providing a second meander-shaped separating plate ( 3 ), - winding the separating plate ( 3 ) on the rotor hub ( 2 ) or winding the separating plate ( 3 ) and sliding on the rotor hub ( 2 ), - coupling of the meandering separating plate ( 3 ) with the outer circumferential surface ( 12 ) of the rotor hub ( 2 ) in the troughs ( 9 ), - pushing on, in particular pressing on a second separating sleeve ( 6 ) on the wave mountains ( 10 ), - optional coupling of the wave crests ( 10 ) with an inner circumferential surface ( 13 ) of the second separating sleeve ( 4 ). Method for producing a cell rotor ( 1 ) of a pressure wave loader according to at least claim 1, characterized by the following method steps - providing an elongate sheet metal strip ( 19 ), - Sectionally generating a meandering structure in the sheet metal strip ( 19 ), with flat lengths ( 20 ) between two meandering lengths ( 21 ), - winding up the processed sheet metal strip ( 19 ), wherein a first flat longitudinal section ( 20a ) to the rotor hub ( 2 ) is wound up as a hollow cylinder, - winding the one-piece with the rotor hub ( 2 ) connected first meander-shaped longitudinal section ( 21a ) on the outer circumferential surface ( 12 ) of the rotor hub ( 2 ), - optional thermal joining of the troughs ( 9 ) with the outer circumferential surface ( 12 ) of the rotor hub ( 2 ), - winding up a piece with the first meandering longitudinal section ( 21a ) connected second flat longitudinal section ( 20b ) and produce a separating sleeve ( 4 ), the first meandering length ( 21a ) surrounds, - optional thermal joining of the inner circumferential surface ( 13 ) of the separating sleeve ( 4 ) with the wave mountains ( 10 ) of the first meandering length section ( 21b ), - Winding a second meandering longitudinal section integrally coupled to the second flat section ( 21b ) on the separating sleeve ( 4 ), - optional thermal joining of the troughs ( 9 ) with the outer circumferential surface ( 12 ) of the first separating sleeve ( 4 ), - winding one piece with the second meandering longitudinal section ( 21b ) connected third flat longitudinal section ( 20c ) and produce a second separating sleeve ( 6 ), the second meandering longitudinal section ( 21b ) surrounds, - optional thermal joining of the inner circumferential surface ( 13 ) of the second separating sleeve ( 6 ) with the wave mountains ( 10 ) of the second meandering longitudinal section ( 21b ). A method according to claim 8, characterized in that the thermal joining is carried out as laser welding. Method according to claim 8, characterized in that a flat longitudinal section ( 20 ) generating a bias on the meandering length (FIG. 21 ) is wound up, so that a transition fit is generated.

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