TW201706509A - Side channel compressor or side channel vacuum pump with sealing inlet strips between two annular channels, located on either side of a rotor disc - Google Patents

Abstract

The invention relates to a side channel compressor comprising an impeller (2) which is arranged such that it can rotate in a housing (3), which is connected to a drive shaft that can rotate around a geometric axis of rotation (x), wherein the impeller (2) is positioned in the housing (3) in such a way that radially outer gaps (11) and radially inner gaps (13) exist between housing (3) and impeller (2), which, during operation, should prevent contact between impeller (2) and housing (3), wherein, in addition, the impeller (2) comprises a closed outer and inner edge and a plurality of vanes (5) on both axial sides, arranged behind one another in a circumferential direction of the impeller, and opening to a surface extending perpendicular to the axis of rotation (x), and the outer edge of which forms a circumferential wall (7) that is associated with a radial wall (10) of the housing (3) to form the radially outer gap (11). According to the invention, in order to advantageously develop a side channel compressor or a side channel machine of this type, such that an improved efficiency is achieved, firstly one or more sealing strips (14) having flat sides (15) are glued in the radially outer gap (11) between the closed outer edge of the impeller (2) and the radial wall (10) of the housing wall on the circumference, which is/are made of a material which lightly abrades in the event of a potential contact with the rotating impeller (2) and thus prevents a jamming of the impeller (2) on the housing (3), wherein the flat sides (15) of the sealing strip (14) extend along the radial wall (10) of the housing (3) and the outer edge of the impeller (2).

Description

Side channel compressor and side channel machine

The present invention relates to a side channel compressor having an impeller rotatably disposed in a housing that is coupled to a drive shaft rotatable about a geometrical axis of rotation, wherein the impeller is positioned in the housing Thus, a radially outer gap and a radially inner gap are created between the housing and the impeller, the gaps preventing contact between the impeller and the housing during operation, wherein, further, the impeller has a closed outer edge And an inner edge, and having a plurality of vanes exposed to the surface perpendicular to the rotating shaft in a manner of successively arranged along the circumferential direction of the impeller on both sides of the axial direction, and the outer edge forms a peripheral wall, The radial wall of the housing is distributed in such a way as to form the radially outer gap.

The invention also relates to a side channel machine, such as a side channel compressor or a side channel vacuum pump, comprising: an impeller having a geometrically rotating shaft and a casing, wherein the impeller is successively radially outward along the circumference of the impeller The arrangement has a plurality of blades exposed to a surface perpendicular to the axis of rotation, and a peripheral wall extending radially outward of the blades, wherein, further, the housing has a radial direction toward the peripheral wall a wall, and a gap is formed between the radial wall and the peripheral wall.

Side channel compressors or side channel machines of the above type are known. Such side channel compressors or side channel machines can be implemented as secondary compressors or pumps. Among them, through the corresponding structural design of the housing part, several passages (so-called "side passages") connecting the impellers on both sides in the axial direction are flowed sequentially (in order). Side pass In the case of a single-stage or single-stage use scheme for a road compressor or side channel machine, the two channels work in parallel.

In the case of the secondary scheme, there are different pressure levels on the two axial impeller sides in these passages because the pressure continues to increase with the distance traveled in the passage. Thus, in the sealing gap between the housing and the impeller, a harmful leakage flow is generated, in particular, from the passage forming the second stage to the passage forming the first stage. This can adversely affect the maximum efficiency and temperature variations in the side channel machine.

Due to manufacturing technical errors in all components, the gap must be relatively large in size on both the radially outer side and the radially inner side of the impeller. Conventional radial gap sizes range from 0.5 to 0.7 mm. Thereby, it is ensured that even in the case where the members have an unfavorable combination in terms of their allowable tolerance limits, the gap can reach the extent that the impeller and the casing member are not brought into contact under the pressure load and the temperature load generated during the work. . Such contact may cause the impeller to lock, resulting in total damage to the side channel machine.

In view of such prior art, the technical object of the present invention is to provide a beneficial improvement to a side channel compressor or side channel machine of the type described above, thereby increasing efficiency.

The main solution of the present invention for achieving the above object is the subject matter of claim 1, wherein in a side channel compressor, the radial direction between the closed outer edge of the impeller and the radial wall of the housing wall portion In the outer gap, one or more sealing strips having a flat surface are adhered to the periphery, and the constituent materials are slightly worn away when coming into contact with the rotating impeller, thereby preventing the impeller from being locked on the housing, wherein The flat surface of the sealing strip extends along the radial wall of the housing and the outer edge of the impeller.

In a side channel machine, the solution of the present invention for achieving the above object is the subject matter of claim 2, wherein a plastic sealing strip is bonded to the radial wall and/or the peripheral wall, which has two flat faces and two a narrow face, wherein an adhesive layer that creates an adhesive effect between the housing and the impeller is disposed only on one of the flat faces, and the opposing flat faces and the peripheral wall or the The radial walls are arranged opposite each other.

By providing a material in its gap (sealing gap) that is easy to wear off when contact occurs and does not generate a large frictional force, the structurally defined gap between the impeller and the housing can be greatly reduced, for example, 0.5 to 0.7 mm is reduced to 0.2 to 0.4 mm. This can greatly improve efficiency. The solution proposed by the present invention for the use of sealing strips (especially plastic sealing strips) is particularly simple and relatively inexpensive.

In this way, the effect of reducing the gap can be achieved without the risk of equipment damage occurring when the impeller is started. The impeller is free to rotate at the start of the installation due to the removal of the sealing strip material, wherein the sealing strip material may be removed to varying degrees as viewed around the sealing strip material and may not be removed locally.

The sealing strip (in particular, the plastic sealing strip) may be provided with an adhesive layer on one of its flat faces extending along the circumferential direction of the radial wall and/or the peripheral wall. Therefore, there is a self-adhesive sealing strip.

By means of the adhesive layer, the sealing strip is fastened circumferentially on the peripheral wall of the impeller or on the radial wall of the housing, wherein the flat surface arranged opposite the adhesive layer fixes the sealing strip in the radial direction The wall faces toward the peripheral wall and faces the radial wall of the housing when the sealing strip is secured to the peripheral wall.

The thickness of the weather strip defined by the distance between the flat faces before the machine is first started can be equal over the entire usable length of the weather strip.遂In the case of slight wear, the machine is initially activated through this side channel, and on the entire perimeter Produces different seal strip thicknesses.

By arranging one or more sealing strips, the outlet temperature can be drastically reduced. In addition, it has been found that the bearing load of the impeller is reduced. In addition, it is also easy to install or remanufacture components intended to reduce the gap during the manufacturing process of the side channel machine and when providing service.

Other features of the invention will be described hereinafter and also in the description of the drawings, and are often preferred in the sub-claims 1 and/or claim 2 or in the features of other claims. These features may however also have important significance in the individual features of claim 1 and/or claim 2 or other claims.

Thus, in a further development, on the radially inner side of the blades, an inner peripheral wall extending on the first side and the second side of the impeller, respectively, may be constructed, wherein further radially inward, a hub connects the inner peripheral walls Further, the housing has a radially inner side or a radially outer side with respect to the peripheral walls, and has opposing walls arranged in a radial direction opposite to each other, and is provided with a radial direction between the opposite walls and the inner peripheral walls The way of the inner gap is. As in the region of the radially outer gaps, the leakage flow can also be adjusted during the operation of the side channel machine in the region of the radially inner gaps.

Thus, in order to further increase the efficiency and improve the temperature change, in addition to the or the seal strips located in the radially outer gap, one or more seal strips assigned to the radially inner gaps are provided. The sealing strips assigned to the radially inner gaps preferably have the same construction as the sealing strips assigned to the radially outer gaps, which mainly relate to the unaffected thickness and the axis of the sealing strip. In terms of width. Furthermore, the sealing strip for the radially outer gap and for the radially inner gap is preferably made of the same material, in particular made of plastic.

The sealing strips are bonded to the surface of the radial wall or the opposite wall in a plane Upper, or the surface of the peripheral wall or inner peripheral wall of the impeller. The respective wall surfaces of the housing or impeller are not specifically fixed for the sealing strip and are structurally pretreated, for example, through a pocket-like recess for receiving the sealing strip.

The sealing strip or sealing strips can be arranged in different ways. For example, a sealing strip may be fastened to the radial wall and/or the opposite wall of the housing such that the flat surface of the sealing strip, which is disposed opposite the bonding surface, interacts with the outer peripheral wall and/or the inner peripheral wall of the impeller.

The sealing strip can also be fastened to the outer peripheral wall and/or the inner peripheral wall of the impeller. During the operation of the machine, the flat faces of the sealing strip that are disposed opposite the bonding faces interact correspondingly with the radial walls and/or the opposing walls of the housing.

In another possible design, it is partially fastened to the radial wall and/or the one or more opposite walls of the housing and partially fastened to the outer peripheral wall and/or the inner peripheral wall of the housing. . Such mutual arrangement may refer to both an axially stacked arrangement in the region of the gap and an arrangement between the inner and outer gaps. For example, a sealing strip can be fastened to the impeller side in the region of the inner gap, and one or more sealing strips are arranged on the peripheral wall of the housing in the region of the outer gap. The sealing strips can also have an arrangement and a fixing scheme that are opposite to the aforementioned arrangement.

Furthermore, for example, two sealing strips can be provided in the region of the outer gap which are spaced apart from each other in the axial direction, wherein one sealing strip can be arranged on the radial wall of the housing, and one sealing strip can be arranged on the impeller. On the perimeter wall. Such mutual arrangement can also be provided in the region of the radially outer gaps.

In a further alternative arrangement, a sealing strip can be arranged at the same gap position, on the radial wall and/or the opposite wall of the housing, and on the outer peripheral wall and/or the inner peripheral wall of the impeller. The sealing strips are correspondingly arranged such that they are in contact with the bonding zone The flat faces of the opposite arrangement are arranged opposite each other with a flat face of the sealing strip arranged radially diametrically opposite the gap, or at least partially against the sealing strip over the entire perimeter. The sealing strips, which are made of plastic, which are opposite each other, can be worn away from each other during the operation of the machine.

In a further preferred refinement, in the gap, in particular in the radially outer gap, two sealing strips are arranged, wherein each sealing strip is assigned to the axially oppositely arranged edges of the impeller One of the regions. The sealing strips can thus be arranged in an axially inwardly extending manner starting from an area in which the impeller is axially defined. Thus, the sealing strip is arranged such that its axially outer narrow faces are at least substantially in a plane facing the corresponding axial edge region of the impeller. The other narrow face is arranged inside the axial direction starting from here. The sealing strip can also be arranged above or below its plane with a tolerance of 1 mm with respect to a substantially planarly identical orientation.

The sealing strip can be provided with a self-adhesive bonding layer. Therefore, the weather strip may have an acrylic layer or a silicon oxide layer. Depending on the situation, a special adhesive can also be provided for the sealing strip after activation of the corresponding surface, for example a two-component adhesive.

In a possible design, the sealing strip consists of polytetrafluoroethylene (PTFE). Grinding off the PTFE also facilitates the creation of a dry lubricating film between the impeller and the contact surface of the housing. The sealing strip can also be composed of more plastic material, for example, consisting of polyperfluoroethylene propylene (FEP), polyimide or polyether ether ketone.

1‧‧‧ side channel machine/compressor

2‧‧‧ Impeller

3‧‧‧Shell

4‧‧·wheels

5‧‧‧ leaves

6‧‧‧ channel

7‧‧‧(outside) perimeter wall

8‧‧‧(内)周壁

9‧‧‧Connected section

10‧‧‧ radial wall

11‧‧‧(outside) clearance

12‧‧‧ opposite wall

13‧‧‧(internal) gap

14‧‧‧ Sealing strip

15‧‧‧(seal strip) flat surface

16‧‧‧(sealing strip) narrow side

17‧‧‧Electric motor

x‧‧‧Rotary axis

The invention is illustrated below with reference to the drawings, but the drawings illustrate only one embodiment. A component that is only described in connection with one of the embodiments, if it is not replaced by other components in other embodiments due to the features disclosed in the embodiment, the component is also Possible parts.

1 is a perspective perspective view of a side channel compressor or a side channel machine; FIG. 2 is a top plan view showing a partial section of an impeller region surrounded by a casing; FIG. 3 is an enlarged view of a region III in FIG. 2; 3 is a cross-sectional view substantially identical to FIG. 3, but with a section offset from the direction of the impeller in FIG. 3, and the impeller is not shown; FIG. 5 is a perspective perspective view of the impeller; FIG. 6 is a perspective view of FIG. A schematic view of a section in which a plurality of sealing strips are arranged on the peripheral wall and the opposite wall of the housing side; FIG. 7 is a view conforming to FIG. 6, wherein the radially outer side and the radially inner side of the impeller are arranged on the peripheral wall. a plurality of sealing strips; FIG. 8 is another view consistent with FIG. 6, wherein a plurality of sealing strips are disposed on the radially outer side defining the gaps; FIG. 9 is another view consistent with FIG. However, a plurality of sealing strips are arranged on the radially inner side defining the gaps; FIG. 10 is another view consistent with FIG. 6, wherein a plurality of sealing strips are arranged between each other in the axial direction; 11 is a view of another embodiment according to FIG. 6, In the peripheral wall of the impeller and on the radial wall and the opposite wall of the casing, a plurality of sealing strips are arranged at the same gap position.

First, referring to Figures 1 and 2, there is shown a side channel machine 1 in the form of a side channel compressor having an impeller 2 and a housing 3 surrounding the impeller.

In the region of the hub 4 , the impeller 2 is connected in a rotationally fixed manner to a drive shaft (not shown) which is rotatable about a geometrical axis of rotation x.

The shaft body of the impeller 2 is driven by the electric motor 17.

The impeller 2 is provided on the radially outer side with a plurality of blades 5 arranged one after the other along the circumference of the impeller. Viewed in the axial direction, the plurality of vanes 5 arranged one after the other in the circumferential direction are constructed on both sides of the impeller 2, wherein the vanes 5 are exposed toward the corresponding faces of the impeller 2 which are perpendicular to the axis of rotation x.

As the blades 5 are arranged concentrically with respect to the axis of rotation x, a plurality of channels 6 are annularly constructed in the housing in such a way as to overlap the blades 5. This produces a two-stage side channel compressor.

On the radially outer side of the vanes 5, the impeller 2 is formed with an outer peripheral wall 7, which is parallel to the axis of rotation x in the cross-sectional view shown in FIG.

The inner peripheral wall 8 is also provided on the radially inner side of the vanes 5 in the same direction as the outer peripheral wall 7, and is axially spaced from the hub 4 by the connecting section 9.

The outer peripheral wall 7 is assigned a circumferential radial wall 10 of the housing 3 with respect to the radially outer portion with respect to the axis of rotation x. This radial wall 10 preferably has the same axial length as the peripheral wall 7.

A radial outer gap 11 is created between the radial wall 10 and the outer peripheral wall 7.

The inner peripheral wall 8 of the impeller 2 is also oppositely assigned to the opposite side wall 12 of the casing side. Viewed from the axis of rotation x, the opposite walls cover the inner peripheral wall 8 radially inward.

The facing walls may preferably also have the same axial length as the inner peripheral wall 8 of the impeller 2 facing.

Between the inner peripheral wall 8 of the impeller 2 and the opposite wall 12 of the casing 3, two inner gaps 13 axially spaced apart are produced.

In the region of the outer gap 11 and the inner gap 13, the radial gap size, that is, the radial distance between the outer peripheral wall 7 or the inner peripheral wall 8 and the assigned housing wall portion, It can be from 0.5 to 0.7 mm.

In order to at least partially reduce its gap size and to minimize leakage flow between the channels 6 during operation of the side channel machine 1, in particular in the outer gap 11, in addition to the inner gap 13 as shown in this embodiment In the region, a sealing strip 14 is arranged.

Each sealing strip 14 first has two flat faces 15 spaced apart from each other and parallel to each other, and two narrow faces 16, as shown in Fig. 6, which are perpendicular to the flat faces 15 in cross section.

The distance between the narrow faces 16 defines the width of the weather strip 14 as viewed in the axial direction, which is less than the axially viewed length of the corresponding gap 11 or 13.

In the embodiments, the width of the weather strip 14 is about 1/5 to 1/6 of the width of the outer gap 11, or 7/10 to 8/10 of the width of the inner gap 13.

The sealing strips 14 are all arranged in the gaps 11 and/or 13 around the axis of rotation x.

As shown in the embodiments, two axially spaced apart sealing strips 14 can be provided in the region of the outer gap 10. A single sealing strip 14 can also be provided in the region of the outer gap 11, for example in a substantially centrally spaced manner on the axial extent of the outer peripheral wall 7 of the impeller 2. Furthermore, a sealing strip 14 can be provided in the region of the two inner gaps 13, and alternatively, a sealing strip can be provided only in one of the inner gaps 13.

In a preferred embodiment, the sealing strips 14 (as shown) are assigned axially opposite edge regions of the impeller 2 such that the axially outer narrow faces 16 of each sealing strip 14 and the impeller 2 One of the faces is at least substantially aligned, and the vanes 5 are exposed toward the face. Starting from here, the other narrow face 16 of the sealing strip 14 is arranged Axial interior.

Each weather strip 14 is preferably a plastic sealing strip, such as a PTFE sealing strip. An adhesive layer, not shown, is provided on one of the flat faces 15, for example, a self-adhesive layer for fixing the weather strip 14 to the wall portion facing.

In the schematic views of Figs. 6 to 11, in order to protrude the arrangement of the weather strip 14, the radial gap sizes are shown to be wide. Specifically, due to the arrangement of the sealing strip 14, a reduced gap size of 0.2 to 0.4 mm is produced in these areas.

Due to manufacturing technical errors, in particular in the region of the radial wall 10 and/or the opposite wall 12 of the housing 3, and in the region of the inner and outer peripheral walls 7, 8 of the impeller 2, the gap 11 must be made And 13 employs a relatively large size of, for example, 0.5 to 0.7 mm. By installing the sealing strip 14 in the sealing gap, the gap width can be reduced to, for example, 0.2 to 0.4 mm, wherein the material of the sealing strip 14 is only in contact with the impeller 2 or the corresponding housing wall portion (as appropriate It is worn away in the peripheral area of the part without generating a large friction.

Different bonding and fixing methods can be selected for the sealing strip 14. For example, in the embodiment shown in the schematic views of Figures 3 and 4 and the schematic view of Figure 6, the sealing strip 14 is secured to the wall of the housing. Each of the weather strips 14 is fixed to the radial wall 10 and the opposite wall 12 by a flat surface provided with an adhesive. The flat surface 15 of the corresponding sealing strip 14 opposite to the bonding surface is directed to the outer peripheral wall 7 or the inner peripheral wall 8 of the impeller 2, the flat surface being located on the outer peripheral wall or the inner peripheral wall as appropriate, or at least The aforementioned reduced clearance is maintained after the initial activation of the side channel machine 1.

According to the schematic diagram of Fig. 7, all of the weather strips 14 can be arranged only on the impeller side. In this embodiment, the weather strips 14 are fastened to the outer peripheral wall 7 and the inner peripheral wall 8 of the impeller 2 through a flat surface provided with an adhesive. Keep away from the sealing strip 14 The flat face 15 on the bonding surface is directed toward the radial wall 10 and the opposite wall 12 of the housing 3.

In another exemplary embodiment, the sealing strips 14 can be fastened to the radially outwardly facing walls of the gaps 11 and 13 as viewed from the axis of rotation x, for example, on the radial wall 10 of the housing 3. In the region of the outer gap 11, and in the region of the inner gap 13 on the inner peripheral wall 8 of the impeller 2 (see Fig. 8).

FIG. 9 shows a further arrangement in which the sealing strip 14 is likewise arranged on the radially inward wall of the gaps 11 and 13 starting from the axis of rotation x. For example, the weather strip 14 is adhesively fastened in the outer gap 11 on the outer peripheral wall 7 of the impeller 2, and the sealing strips 14 are adhered to the inner gap 13 fastened to the opposite wall 12 of the casing 3. within the area.

The sealing strips 14 can also be arranged offset on the radially inner side and the radially outer side of the gap in the axial direction with respect to the outer gap 11 or with respect to the combination of the inner gaps 13 (see Figure 10). For example, the sealing strips 14 assigned to one side of the impeller (the blades 5 are exposed toward the surface) are fixed to the respective peripheral walls on the impeller side, and the axially oppositely disposed sealing strips 14 are fixed in correspondence. On the wall of the housing (radial wall 10 and opposite wall 12).

In addition, in the radially outer wall portion of the gap, and on the radially inner wall portion of the gap, corresponding to an axial gap position, each of the sealing strips 14 may be fastened away from the bonding surface. The straight faces are aligned with each other, preferably overlapping in a radial projection. The weather strips 14 are at least partially abutted as viewed over the perimeter, as occurs by the wear of the side channel machine 1 during initial use after assembly with the unaffected weather strip 14.

The foregoing embodiments are for explaining the hairs contained in the entire application. It is to be noted that these inventions each independently form a further solution with respect to the prior art, at least through the following combination of features: a side channel compressor, characterized in that the outer edge of the closed end of the impeller 2 and the radial wall 10 of the wall of the housing In the radially outer gap 11 , one or more sealing strips 14 having a flat surface 15 are adhered to the periphery, and the constituent materials are slightly worn away when coming into contact with the rotating impeller 2, thereby preventing the impeller 2 from being worn. Locked on the housing 3, wherein the flat face 15 of the sealing strip 14 extends along the radial wall 10 of the housing 3 and the outer edge of the impeller 2; a side channel machine characterized by a radial wall 10 And/or the peripheral wall 7 is adhered with a plastic sealing strip 14 having two flat faces 15 and two narrow faces 16 , wherein the housing 3 and the impeller 2 are arranged only on one of the flat faces 15 An adhesive layer that creates an adhesive effect, and the opposing flat faces 15 are disposed opposite the peripheral wall 7 or the radial wall 10; a side channel compressor or side channel machine characterized in that The radially inner side of the blade 5 is constructed on the first side of the impeller 2, respectively An inner peripheral wall 8 extending on the second side, wherein, further radially inside, a hub 4 is connected to the inner peripheral wall 8, and the housing 3 has a radially inner side or a radially outer side with respect to the peripheral walls 8 in the axial direction. Oppositely disposed opposite wall 12, which is provided with a radially inner gap 13 between the opposing wall 12 and the inner peripheral walls 8; a side channel compressor or side channel machine characterized in that In addition to the or the sealing strips 14 located in the radially outer gap 11, one or more sealing strips 14 assigned to the radially inner gaps 13; a side channel compressor or side channel machine, Characterized in that the sealing strip 14 is fastened on the radial wall 10 and/or on the opposite wall 12; A side channel compressor or side channel machine characterized in that the sealing strip 14 is fastened to the outer peripheral wall 7 and/or the inner peripheral wall 8 of the impeller 2.

A side channel compressor or side channel machine characterized in that the sealing strips 14 are partially fastened to the radial wall 10 and/or the opposite wall 12 and partially fastened to the peripheral wall 7 and/or the inner peripheral wall 8 on.

A side channel compressor or side channel machine characterized in that a sealing strip is arranged on the radial wall 10 and/or the opposite wall 12 and on the outer peripheral wall 7 and/or the inner peripheral wall 8 at the same gap position. 14.

A side channel compressor or side channel machine, characterized in that two sealing strips 14 are arranged in the gaps 11, 13, wherein each sealing strip 14 is assigned to an axially opposite edge region of the impeller 2 One of them.

A side channel compressor or side channel machine characterized in that the sealing strip 14 is provided with a self-adhesive bonding layer.

A side channel compressor or side channel machine characterized in that the sealing strip 14 is composed of PTFE.

All of the disclosed features (as a single feature or combination of features) are the essence of the invention. Therefore, the disclosure of this application also contains all the contents disclosed in the relevant/attached priority file (copy of the prior application). In addition, for the purpose of this purpose, the features described in the files are also included in the application. The scope of the patent application. The subsidiary item is characterized by its characteristics for the features of the prior art improvement of the prior art, and its main purpose is to make a divisional application on the basis of the claims.

1‧‧‧ side channel machine/compressor

2‧‧‧ Impeller

3‧‧‧Shell

5‧‧‧ leaves

6‧‧‧ channel

7‧‧‧(outside) perimeter wall

8‧‧‧(内)周壁

9‧‧‧Connected section

10‧‧‧ radial wall

11‧‧‧(outside) clearance

12‧‧‧ opposite wall

13‧‧‧(internal) gap

14‧‧‧ Sealing strip

Claims (12)

A side channel compressor having an impeller (2) rotatably disposed in a housing (3) coupled to a drive shaft rotatable about a geometrical axis of rotation (x), wherein the impeller (2) is Positioned in the casing (3) such that a radial outer gap (11) and a radial inner gap (13) are generated between the casing (3) and the impeller (2), and the gaps are in operation Preventing contact between the impeller (2) and the casing (3), wherein, further, the impeller (2) has a closed outer edge and an inner edge, and on both sides of the axial direction along the circumference of the impeller The successive arrangement has a plurality of blades (5) exposed to a face perpendicular to the axis of rotation (x), and the outer edge forms a peripheral wall (7) which is formed to form the radially outer gap (11) Disposed to the radial wall (10) of the casing (3), characterized by a radial direction between the closed outer edge of the impeller (2) and the radial wall (10) of the casing wall In the outer gap (11), one or more sealing strips (14) having a flat surface (15) are adhered to the periphery, and the constituent materials are slightly worn off when coming into contact with the rotating impeller (2). Thereby preventing the impeller (2) from being in the shell (3) on the lock, wherein the sealing strip (14) of the flat face (15) and the impeller system (2) extends along the outside edge of the housing (3) of the radial wall (10). A side channel machine, such as a side channel compressor or a side channel vacuum pump, comprising: an impeller (2) having a geometrical axis of rotation (x) and a casing (3), wherein the impeller system (2) is radially outwardly The manner in which the impellers are circumferentially arranged one after the other has a plurality of blades (5) exposed to a face perpendicular to the axis of rotation (x), and a peripheral wall extending radially outward of the blades (5) ( 7), wherein, further, the casing (3) has a radial wall (10) facing the outer peripheral wall (7), and a gap is formed between the radial wall (10) and the peripheral wall (7) (11), characterized in that a plastic sealing strip (14) is adhered to the radial wall (10) and/or the peripheral wall (7), which has two flat faces (15) and two narrow faces ( 16), wherein only one of the flat faces (15) Arranging an adhesive layer that creates an adhesive effect between the casing (3) and the impeller (2), and the opposing flat faces (15) and the peripheral wall (7) or the diameter Arranged opposite the wall (10). A side channel compressor or side channel machine according to any of the preceding claims, wherein, on the radially inner side of the blades (5), respectively constructed on the first side and the second side of the impeller (2) An inner peripheral wall (8) extending, wherein, further radially inside, a hub (4) connects the inner peripheral walls (8), and the casing (3) is radially with respect to the peripheral walls (8) The inner side or the radially outer side has opposing walls (12) disposed opposite each other in the axial direction, and is provided with a radially inner gap between the opposite facing walls (12) and the inner peripheral walls (8) (13) ) the way it is. A side channel compressor or side channel machine according to any of the preceding claims, wherein one or more are provided in addition to the or the sealing strip (14) located in the radially outer gap (11) A sealing strip (14) assigned to the radially inner gaps (13). A side channel compressor or side channel machine according to any of the preceding claims, wherein the sealing strip (14) is fastened to the radial wall (10) and/or to the opposite wall (12). A side channel compressor or side channel machine according to any of the preceding claims, wherein the sealing strip (14) is fastened to the outer peripheral wall (7) and/or the inner peripheral wall (8) of the impeller (2) . A side channel compressor or side channel machine according to any of the preceding claims, wherein the sealing strips (14) are partially fastened to the radial wall (10) and/or the opposite wall (12) And partially fastened to the outer peripheral wall (7) and/or the inner peripheral wall (8). A side channel compressor or side channel machine according to any of the preceding claims, wherein in the same gap position, on the radial wall (10) and/or the opposite wall (12) and on the peripheral wall A sealing strip (14) is disposed on both (7) and/or the inner peripheral wall (8). A side channel compressor or side channel machine according to any of the preceding claims, wherein Two sealing strips (14) are arranged in the gap (11, 13), and wherein each sealing strip (14) is assigned to each of the axially oppositely disposed edge regions of the impeller (2) One. A side channel compressor or side channel machine according to any of the preceding claims, wherein the sealing strip (14) is provided with a self-adhesive bonding layer. A side channel compressor or side channel machine according to any of the preceding claims, wherein the sealing strip (14) is comprised of polytetrafluoroethylene (PTFE). A side channel compressor or side channel machine characterized by having one or more of the distinguishing features of any of the foregoing claims.