DE102011003522B4 - Coupled outlet diffuser angle adjustment - Google Patents

Abstract

The invention relates to a device for adjusting the angle of blades of a Austrittsleitapparats a compressor and a method for assembling such a device for angular adjustment of blades of a Austrittsleitapparats. The device for adjusting the angle of blades (11) of an outlet guide apparatus (102) of a compressor (100) comprises a plurality of angle-adjustable blades (11), each mounted on a shaft (12) in a housing (101), in particular a spiral housing (101) are. The shafts (12) each have an (adjusting) lever (15), which is guided by using a link (24), wherein the links (24) are arranged on an adjusting ring (23), so that upon adjustment of the adjusting ring ( 23), the angular adjustment of the blades (11) can be realized. When mounting this device in the housing (101) of the compressor (100) when coupling the angular adjustment of the Austrittsleitapparats (102) with a Eintrittsleitapparat (103) of the compressor (100) are first the blades (11) on the respective shaft (12) , Rollers (13) on the respective (adjustment) lever (15) and the scenes (24) to the adjusting ring (23) and the adjusting ring (23) to the inlet guide (103) mounted. The shafts (12) are mounted in the housing (101) and the (adjustment) levers (15) are mounted on the respective shaft (12). Thereafter, the Eintrittsleitapparat (103) is mounted in the housing (101), wherein the rollers (13) are inserted into the respective link (24), whereby the coupling of the angular adjustment is realized.

Description

The invention relates to a device for angular adjustment of blades of a Austrittsleitapparats a compressor and a method for assembling such a device for angular adjustment.

Compressors or fluid compressing devices are used in various industries for various applications involving compression or compression of fluids, especially (process) gases. Well-known examples of this are turbo compressors in mobile industrial applications, such as in exhaust gas turbochargers or in jet engines, or even in stationary industrial applications, such as gearbox turbo compressors for air separation.

In such - in its operation continuously working - turbo compressor, the pressure increase (compression) of the fluid is effected by an angular momentum of the fluid from entry to exit by a rotating radially extending blades having impeller of the turbo compressor is increased by the rotation of the blades , D here. H. In such a compressor stage, pressure and temperature of the fluid increase while the relative (flow) velocity of the fluid in the impeller decreases. In order to achieve the highest possible pressure increase or compression of the fluid, a plurality of such compressor stages can be connected in series.

As types of turbocompressors, a distinction is made between radial and axial compressors.

In the axial compressor, the fluid to be compressed, for example a process gas, flows in a direction parallel to the axis (axial direction) through the compressor. In the radial compressor, the gas flows axially into the impeller of the compressor stage and is then deflected outwards (radially, radially). With multi-stage centrifugal compressors, a flow diversion becomes necessary behind each stage.

Combined types of axial and radial compressors draw large volume flows with their axial stages, which are compressed to high pressures in the subsequent radial stages.

While mostly single-shaft machines are used, gear compressor compressors, the individual compressor stages are grouped around a large wheel around, with several parallel shafts, each carrying one or two - recorded in spiral housings - wheels are driven by a large drive gear, a large wheel.

To optimize the flow control through the compressor or by a compressor stage and thus to optimize the performance of the compressor or the compressor stage, it is also known, the impeller inlet Einleitleitat (shortly below ELA) and / or the impeller a Austrittsleitapparat (short in the following ALA).

Such a gear compressor, a gear turbo compressor from Siemens: with the name STC-GC, used for the air separation, is from http://www.energy.siemens.com/hq/en/verdichtung-expansion-ventilation/turboverdichter/getriebeturboverdichter/ stc-gc.htm (available on January 10, 2011).

Furthermore, it is known that in a gear compressor, for example, for the air separation, usually a large driving range in a map of the compressor in the direction of smaller flow rates at almost constant pressure (turn-down driving range) is required.

If these transmission compressors were designed for a final pressure that corresponds to the required final pressure at the operating points, the turn-down driving range would be too small. Therefore, transmission compressors are usually designed for a higher ultimate pressure, so that the characteristic field (i.in., swirl characteristic map) at the required final pressure of the operating points has a required width.

However, then the operating points of the gear compressor are relatively far away from the maximum efficiency, which is usually in the vicinity of the internal Auslegepunktes.

A possible improvement could be achieved if a flatter surge boundary line course could be achieved in the map, and thus the necessary map width with higher efficiency could be achieved.

In order to influence the characteristic map, it is known to change the angle of attack of blades of an outlet guide apparatus, in the following referred to as outlet guide vanes.

Such an influence on the flow pattern after the impeller of a compressor or a compressor stage must be on a flow guide in front of the impeller, d. H. in the inlet guide, be matched, which requires a coordinated or combined adjustment of inlet and outlet guide vanes.

A backdrop is a used in mechanical transmission element for power transmission (link guide).

The gate has a slot, web or a groove in / on which / a sliding block is forcibly guided on both sides to implement a movement of the backdrop in a movement of the sliding block. A transfer function (also coupling function) of the slotted guide is determined by the course of the guide, ie by the course of the slot, web or groove, and is freely selectable within wide limits. The slotted guide is used in particular for the realization of complex transfer functions.

From the publication EP 1 998 026 A2 a device for angular adjustment of vanes is known, in each of which a first engagement element and a second engagement element is rotatably mounted with ring elements at each blade. From the DE 889 091 B is known a vane system, which is associated with scenes.

The invention has for its object to provide a device for angular adjustment of blades of a Austrittsleitapparats a compressor, which improves the disadvantages of the prior art, to realize simple and inexpensive and easy and inexpensive to assemble or in a compressor or a compressor stage is to be installed.

The object is achieved by the device for adjusting the angle of blades of a discharge nozzle of a compressor and by the method for mounting such a device having the features according to the respective independent claim.

The device for angular adjustment of blades of an outlet guide of a compressor comprises a plurality of (angle) adjustable blades, which are each mounted on a shaft in a housing, in particular in a spiral housing.

The shafts each have a (adjustment) lever or are each connected to a (adjusting) lever, which is guided using a link - in particular via the (adjustment) levers mounted and guided in the scenes roles.

The scenes are in turn arranged on an adjusting ring (also in the following setting retaining ring) or connected to a setting ring or gate retaining ring.

When adjusting this collar so the blades or the (Anström-) angle of the blades - according to the realized through the backdrop Verstellmimik - adjust, whereby the flow of the blades changed and influence on the map of the compressor can be taken.

When mounting this device in the housing of the compressor - and coupling the angle adjustment of the Australsleitapparats (ALA) with a Eintrittsleitapparat (ELA) or with an angular displacement of blades of the inlet guide of the compressor - are first the blades of the Austrittleitapparats on the respective shaft, Rollers on the respective (adjusting) lever and the scenes on the adjusting ring - and the adjusting ring mounted on the inlet guide.

The shafts are mounted in the housing and the (adjustment) levers are mounted on the shafts.

Thereafter, the entrance guide is mounted in / on the housing, with the rollers are inserted into the respective gate, whereby the coupling of the angle adjustment of ALA and ELA is realized.

Preferred developments of the invention will become apparent from the dependent claims.

A particular advantage of the invention is that it realizes a very simple, inexpensive and flexible and highly efficient adjustment mechanism for the blades of the ALA, which moreover, via coupling of the adjusting ring with the ELA or with the adjustment mechanism of the ELA to the ELA Adjustment - by means of an ELA adjustment cylinder - can be connected (combined ELA-ALA (angle) adjustment) - and thus requires no separate, separate drive for adjustment.

A combined, mutually tunable ELA-ALA angle adjustment and thus a desired influence on the map of the compressor (to optimize its performance) is possible. In addition, it proves to be advantageous that such a combined ELA-ALA adjustment mechanism can be arranged inside the housing, invisibly from the outside.

About a - simple processing methods - flexible design of the backdrop or the slide guide, for example, by machining a groove or slot in the backdrop and / or alignment of the scenery on the collar, any coupling functions or Verstellmimiken - for the combined Angle adjustment - realize.

Thus it can be provided in a preferred embodiment that the slotted guide is designed as a slot, web or groove in / on the backdrop. Preferably, it can further be provided here that the element guided in the link element is a roller mounted on the (adjusting) lever is used. Particularly preferably, it can be provided to introduce a, in particular straight, groove in the gate by machining, in which then the guided element or the roller is guided or moved.

In such straight grooves or slots, the production is simple, but the coupling of ELA angle to ALA angle (combined ELA-ALA adjustment) still subjected to trigonometric functions. By appropriate processing, for. B. by milling, of guide surfaces or of rolling surfaces (guided in scenes roles as guided elements) in / on the backdrop can be implemented almost any coupling functions.

Simple, linear coupling functions, such as ramps or sawtooth profiles with arbitrary gradients or "translations", as well as complex, non-linear couplings can be realized in this way.

Thus, for example, it is also possible to decouple the combined ELA-ALA adjustment in desired angular ranges of the ELA by incorporating a surface which is neutral (90 °) to the rolling circle of a roller guided in the scenery (in some areas decoupling or dead gear).

In a preferred embodiment, it is provided that the link via one or more eccentric units, for example consisting of an eccentric eccentric, clamping and adjusting screw, in particular via two eccentric units, is bolted to the adjusting ring. Such screwing the backdrop with the collar through one or through the two or more eccentric allows a simple and flexible alignment of the backdrop on the collar - and thus influencing the coupling function. For this purpose, it can also be provided that - by appropriate design of, for example, the housing or other elements with access opening or the like, the adjustment even when mounted state, for. B. quasi closed volute, can be done.

In a preferred embodiment, it is provided to adjust the adjustment mechanism or the adjusting mechanism by appropriate design and / or orientation of the link in such a way that an angular reduction in the combined ELA-ALA angle adjustment is realized. This means that a larger angle adjustment of the ELA blades results in a smaller angle adjustment for the ALA blades.

Thus, for example, the Verstellmimik can be adjusted such. B. by a correspondingly aligned ramp as a slotted guide that an ELA angle adjustment of 60 ° leads to an ALA angle adjustment of 45 °.

Moreover, the invention proves advantageous with its adjustment mechanism according to the invention that in the direction of the force ALA → ELA or counter to the adjustment direction ELA → ALA (ie an adjustment of the ELA blades effected via the realized by the adjustment coupling and the adjustment of the ALA Shovels), in particular in the range of a realized reduction, is self-locking. Thus, an additional clamping of the mechanism is unnecessary, which simplifies the construction of a combined angle adjustment accordingly.

Also, the invention allows, in particular by its simple, constructive structure, the use or the use of commercially available sliding and rolling bearings for storage in the invention of moving elements.

Thus, it can be provided in a preferred embodiment, the (adjusting) lever using a (adjusting) lever arranged in / on the backdrop to lead. This role can according to another preferred embodiment by means of a plain bearing bush and a threaded pin on the (adjustment) lever mounted or stored - and secured using one or more retaining rings - are.

By using such bearing elements, a friction component can be minimized at the drive power to be applied during blade adjustment, in particular combined blade adjustment. Also, the invention thereby enables, d. H. through the use of such conventional bearing elements, a cost-effective design of the angle adjustment.

Furthermore, it proves to be advantageous in the invention that the components according to the invention, such as the (adjustment) lever and / or the scenery, as small and / or simple turned and milled parts can be performed, the no further requirements for a common processing put.

Also, the invention can be used identical for left- and right-handed compressor. Furthermore, it proves to be advantageous in the invention that it can be used or used independently of the number of blades of the ELA as well as of the number of blades of the ALA and thus correspondingly flexibly.

In a preferred embodiment, it is provided that the adjusting ring is connected by connection with an adjusting element of the ELA, for example with a collar of the ELA or with the adjusting ring for the ELA blades. The angle adjustment of the ELA blades - by turning the ELA adjusting ring - thus leads to (coupled or combined) angle adjustment of the ALA blades.

In a further preferred embodiment it can be provided that the fastening of the blade to the shaft is carried out using a sleeve, wherein the blade, the sleeve and the shaft via one or more pins, in particular a threaded pin and / or a clamping pin in the axial Direction can be held together.

From a strength standpoint, this connection is from blade to shaft, i. H. attaching the bucket to the shaft, a critical area. During operation of the compressor, the blading is directly in contact with the fluid to be delivered, since this is to influence the direction of flow. As a result, the blading or the blades are exposed but also occurring flow surges and vibrations or corresponding loads, in particular, limits of the driving range.

In order to take these loads into account, the connection between the blade and the shaft can be massively carried out via the (blade) sleeve. In a particularly preferred embodiment, it is provided that the blade, the sleeve and the shaft are held together in the axial direction via a central threaded pin. The bucket, the sleeve and the shaft can then be pinned together. By the pins in the blade and the sleeve at the same time a release of the central threaded pin is excluded. When fully assembled, all pins can be connected to the front of adjacent components, so that a release in the operating state is excluded.

In the invention further proves to be particularly advantageous that it is divisible and thus easy to install. Thus, a divisibility of the device at a junction between the (adjustment) lever and the link, in particular between a (adjusting) lever arranged on the roller and the scenery executed. During assembly, the inlet guide can be mounted in / on the housing so that the rollers are inserted into the respective slot.

Under certain circumstances, this divisibility may also be possible, especially with large volute casings.

In a preferred embodiment, it may be provided for this purpose that the slide and / or the roller arranged on the (adjusting) lever have / have a mounting bevel, in particular as a threading aid.

In a further preferred embodiment, the compressor is a gear compressor, in particular a multi-stage gear compressor, wherein here the angle adjustment according to the invention can be implemented in one or more stages of this gear compressor. The compressor or the multi-stage gear compressor can preferably be used for air separation.

It proves to be of particular advantage in the invention that it is also suitable for use in large volute casings of compressors, in particular gearbox compressors or compressor stages. Previously known constructions of angular displacements of blades were intended for small spiral housings, since here a spiral insert is used within the spiral housing and thus an adjustment mechanism can be easily integrated and divisible for assembly. Now, the invention also allows the use of an angle adjustment for large volute casings.

Furthermore, the invention makes it possible to increase the efficiency of a compressor designed according to the invention in performance-rated high operating points, which lie in the partial and / or overload range in the swirl characteristic diagram of the compressor. In particular, it proves here in the invention of great advantage that can be improved or extended by the realized angle adjustment of the driving range of, in particular multi-stage, compressors.

In figures, an embodiment of the invention is shown, which will be explained in more detail below.

Show it

1 Sketch of a volute casing of a compressor stage of a gear compressor;

2 Sketch of a section through the spiral housing after

1 with a combined exit nozzle (ALA) / inlet guide (ELA) angle adjustment;

3 Sketch of a further section through the spiral housing 1 with the combined ALA-ELA angle adjustment;

4 Sketch of a section through the sectional drawing after 3 with a sliding mechanism of the combined ALA-ELA angle adjustment;

5 Sketch of a further section through the spiral housing 1 with the combined ALA-ELA angle adjustment;

6 Sketch of a further section through the spiral housing 1 with an eccentric unit for screwing the backdrop with a Backing bracket (ALA collar) of the combined ALA-ELA angle adjustment;

7 Sketch of a blade-shaft (adjustment) lever unit of the combined ALA-ELA angle adjustment;

8th Sketch of a bolting of the blade with the shaft of the blade-shaft (adjustment) lever unit after 7 ;

9 Sketch of an attachment of the (adjustment) lever to the shaft and a bearing of the roller to the (adjustment) lever of the blade-shaft (adjustment) lever unit after 7 ,

Exemplary embodiment: Coupled or combined outlet guide device (ALA) / inlet guide device (ELA) angle adjustment of a compressor stage with spiral housing (with assembly procedure)

(a) Construction

1 shows a spiral housing 101 a compressor stage 100 a multi-shaft gear compressor for air separation.

This compressor stage 100 initially has the usual structure in a spiral housing 101 arranged compressor stage 100 with an impeller, an inlet diffuser upstream of the impeller (ELA) 103 and a downstream of the impeller Austrittsleitapparat (ALA).

However, with this compressor stage 100 an angular adjustment of blades of the ELA 29 with an angle adjustment of blades of the ALA 11 via an adjustment mechanism 4 or Verstellmimik coupled.

In the following 2 to 9 are more details of this in the spiral housing 101 recorded adjustment mechanism 4 or Verstellmimik, ie the coupled outlet guide (ALA) / Eintrittsleitapparat (ELA) angle adjustment shown.

For the angle adjustment or a rotation of ALA blades 11 to enable is any of these ALA blades 11 on a single wave 12 in the spiral housing 101 stored ( 2 . 3 . 5 . 7 to 9 ).

From a strength point of view, this compound is made of ALA scoop 11 to wave 12 ( 7 to 8th ), ie the attachment of the ALA blade 11 on the shaft 12 , a critical area. In operation of the compressor is this blading 1 directly in contact with the fluid to be delivered. This is the blading 1 or are the ALA blades 11 occurring flow surges and vibrations or corresponding loads, in particular at the limits of the driving range exposed.

To account for these loads is the connection of the ALA blade 11 with the wave 12 via a (bucket) sleeve 14 solid executed. The shovel 11 , the thimble 14 and the wave 12 Be there about a central threaded pin 17 held together in the axial direction. The shovel 11 , the sleeve and the shaft 12 are then pinned together ( 8th ).

Through the pins 110 in the shovel 11 and the sleeve 14 will simultaneously release the central threaded pin 17 locked out.

In the assembled state are all pins 110 connected or covered on the front side of adjacent components, so that a release in the operating state is excluded.

On the waves 12 each sit - with the waves 12 pinned - Roller levers or adjusting levers 15 that about roles 13 in scenes 24 to grab. This is shown by the scenes 24 straight long holes 26 in which these roles 13 each be managed ( 2 to 6 ).

9 shows the storage of such a role 13 on the roller lever 15 in detail. The role 13 sits on a plain bearing bush 16 , which in turn on a grub screw 17 stored and with a ring 18 as well as with a circlip 19 secured there. The grub screw 17 is with the roller lever 15 bolted to block and there over a dowel pin 110 secured.

The scenes 24 are each about two in a gate holder 23 recorded eccentric units 3 fixed with this gate retaining ring (ALA collar) 23 connected or screwed ( 4 and 5 ).

5 shows such an eccentric unit 3 in detail. The eccentric unit 3 has an eccentric 31 with two holes 37 on. About the first hole 37 the clamping and fixation of the backdrop takes place 24 , For this purpose, the eccentric 31 there with the scenery 24 associated eccentric pin 32 , this eccentric bolt 32 securing circlip 34 , a mounting funnel 33 as well as a cylinder screw 25 , on which the clamping and fixing takes place on. About the second hole 37 the adjustment of the eccentric takes place 3 ie the orientation of the scenery 24 on the backdrop holder 23 , For this purpose, the eccentric 31 there a cylinder screw 25 about which the adjustment by twisting the eccentric 31 in the gate holder ring 23 done, on.

The backdrop holder 23 is again a construction of several over the circumference of the gate holder 23 distributed ring bearers 21 with cylinder screws 25 and spacer cylinders 22 with a collar of the ELA (ELA collar) 27 firmly connected or screwed ( 3 ).

Will the ELA angle, ie the angular position of the ELA blades 29 and thus the flow of the ELA 103 , adjusted, the ELA adjusting ring rotates 27 , The ALA blading 1 . 11 leads according to the translation / reduction in the scenes 24 and the roller lever 15 this rotation with out.

(b) divisibility of the adjustment mechanism

In this adjustment mechanism or Verstellmimik 3 is roller lever 15 with the spiral housing 101 and the backdrop holder 24 the suction flange 105 connected. Since these components are successively mounted on the gearbox, the Verstellmimik 3 designed to be divisible accordingly.

The division of Verstellmimik 3 takes place at the contact points of roles 13 and scenes 24 , For this purpose are scenes 24 and roles 13 with mounting bevels 39 provided as a threading aid.

(c) Assembly procedure

1. Pre-assembly (guide) blade unit 1

Pre-assembly shaft 12 and shovel 11

For the blading 1 of the ALA 102 First, the blade sleeve 14 on the ALA wave 12 set and over the grub screw 17 with the shovel 11 screwed.

Subsequently, radial and axial dowel pins 110 for securing the position of the bucket 11 and ALA wave 12 bored and used.

Pre-assembly roller lever 15

The role 13 , the plain bearing bush 16 and the ring 18 be with the circlip 19 on the grub screw 17 attached. This is in the roller lever 15 screwed in block, then drilled and over dowel pins 110 secured.

2. Pre-assembly of the scenes 24 at the inlet guide device (ELA) 103

To prepare the gate holder ring 23 in each case two eccentric units 3 with a backdrop 24 screwed. Here are the security screws 25 only loosely screwed. The tightening and thus the clamping takes place after setting the slide position (see point 4).

At the ELA 103 are the ring bearers 21 with cylinder screws 25 and spacer cylinders 22 on the ELA collar 27 to fix radially. Subsequently, the pre-assembled gate holder 23 with the ring carriers 21 screwed.

3. Assembly of the guide vane units 1 in the spiral housing 101 (to each other, 0 °)

In the spiral housing 101 are in the late contact surface of the diffuser disk 106 Drilling according to the neutral and limit positions of the ALA blading 1 brought in.

The adjustment takes place without diffuser disc, whereby in the final state the diffuser disc covers the setting bore. Thus, the flow space is smooth and at the same time the adjustment holes are available for later alignment work.

For assembly, the plain bearing bushes are first 16 in the wave seats 28 in the spiral housing 101 to put. Subsequently, the pre-assembled vane units 1 from the spiral back (collar side) inserted and the blades 11 brought to the pins to the plant.

The pre-assembled roller levers 15 then be on the waves 12 set and aligned in a circle. This setting is via the pre-assembly thread 38 the roller lever 15 fixed.

Subsequently, roller levers 15 and ALA waves 12 pinned together. Thus, the control torque can be transmitted and the vane units 1 are secured axially.

4. Final settings ALA angle / ELA angle (marriage of the adjustment mechanism 3 )

The final adjustment is made to the volute casing 101 attached to the finished gearbox. For accessibility reasons pinion shaft and contour / inlet ring are omitted.

The positioning pins for ALA zeroing are removed and suction flange 105 and attached ELA 103 are inserted axially with the gate attachments. All roles slide 13 into their respective scenery 24 ,

The ELA 103 is to drive manually in its largest Mitdrallstellung (85 °). The coupling alters the ALA blades 11 any.

These are through over the eccentric 31 bring into their first limit position (according to coupling law). Accessibility is for the adjustment tool, in this case a hexagon socket wrench in the ball head, through the adjustment holes 107 in the suction flange 105 given.

To control the ALA angular position, the holes and the locating pins are in the spiral housing 101 (Bearing surface diffuser disc 106 ) used.

After that, the ELA 103 manually brought into its largest counter-rotating position (-35 °). This alters the ALA blades 11 again. Also this second position of the ALA blades 11 will be back on the eccentric 31 gem. Setpoint adjusted.

To secure the settings then all Exzentereinheiten 3 over her cylinder screws 25 in the backdrop holder 23 clamped.

After disassembly of suction flange 105 with ELA extensions 103 become the backdrops 24 with gate holder 23 bored and pinned.

Claims (8)

Device for angular adjustment of blades ( 11 ) of an outlet guide apparatus ( 102 ) of a compressor ( 100 ), with several angle-adjustable blades ( 11 ), each on a wave ( 12 ) in a housing ( 101 ), characterized in that the waves ( 12 ) each one (adjustment) lever ( 15 ) using a lever ( 15 ) arranged roll ( 13 ) in a scenery ( 24 ), whereby the scenes ( 24 ) on a collar ( 23 ) are arranged so that when adjusting the adjusting ring ( 23 ) the angular adjustment of the blades ( 11 ) is feasible. Angle adjustment device according to claim 1, characterized in that the adjusting ring ( 23 ) with an inlet guide ( 103 ) of the compressor ( 100 ) is connected such that the adjustment of the adjusting ring ( 23 ) with an angle adjustment of blades ( 29 ) of the inlet guide ( 103 ) is coupled. Angle adjustment device according to at least one of the preceding claims, characterized in that a connection of the shaft ( 12 ) with the (adjustment) lever ( 15 ) using a sleeve ( 14 ), in particular the shaft ( 12 ), the sleeve ( 14 ) and the (adjustment) lever ( 15 ) via a pen ( 17 ), in particular a threaded pin ( 17 ), held together in the axial direction. Device for angular adjustment according to at least one of the preceding claims, characterized in that the device for angular adjustment is made divisible, in particular the divisibility at a connection point between the (adjustment) lever ( 15 ) and the scenery ( 24 ), in particular between one on (adjusting) lever ( 15 ) arranged roll ( 13 ) and the scenery ( 24 ) is executed. Angle adjustment device according to at least one of the preceding claims, characterized in that the slide ( 24 ) and / or on the (adjustment) lever ( 15 ) arranged roll ( 13 ) have a Montagefase, in particular as Einfädelhilfe, / has. Angle adjustment device according to at least one of the preceding claims, characterized in that the housing ( 101 ) a spiral housing ( 101 ). Angle adjustment device according to at least one of the preceding claims, characterized in that the compressor ( 100 ) is a gear compressor, in particular a multi-stage gear compressor, used for air separation, is. Method for mounting a device for angular adjustment of blades ( 11 ) of an outlet guide apparatus ( 102 ) according to one of the preceding device claims in a housing ( 101 ) of the compressor ( 100 ), in particular a transmission compressor ( 100 ), with coupling of the angular adjustment of the Austrittsleitapparats ( 102 ) with an inlet guide ( 103 ) of the compressor ( 100 ) in which - initially - the blades ( 11 ) to the respective wave ( 12 ) and the roles ( 13 ) on the respective (adjustment) lever ( 15 ) and - the scenes ( 24 ) to the adjusting ring ( 23 ) and the collar ( 23 ) to the inlet guide ( 103 ) and - the waves ( 12 ) in the housing ( 101 ) and the (adjustment) levers ( 15 ) to the respective wave ( 12 ) - after that - the inlet guide ( 103 ) in the housing ( 101 ), whereby the rollers ( 13 ) into the respective scenery ( 24 ), causing the coupling.

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