Side channel compressor for compressing gas

Abstract

A side channel compressor for compressing gas includes a housing, which forms a side channel, and an impeller drive arranged in the housing. The housing forms a feed channel fluidically connected to the side channel for feeding gas to the side channel and a discharge channel for discharging gas out of the side channel that is fluidically connected to the side channel. The feed channel branches into two separate channel arms each extending along a channel arm center axis. The housing is subdivided along a separating plane into first and second housing parts which sealingly lie against one another. The discharge channel is passed through between the two channel arms and either a first or second discharge channel part of the discharge channel, opens out on a connecting surface of the first or second housing part forming a gas outlet opening arranged apart from the separating plane.

Claims

1. A side channel compressor for compressing gas, the side channel compressor comprising: a housing, which forms a side channel; and an impeller drive arranged in the housing, which comprises an impeller arranged in the side channel for driving gas through the side channel, wherein the housing forms a feed channel, that is fluidically connected to the side channel, for feeding gas to the side channel and a discharge channel, that is fluidically connected to the side channel, for discharging gas out of the side channel, wherein the feed channel branches into two separate channel arms each extending along a channel arm center axis, wherein the housing is subdivided along a separating plane into a first housing part and a second housing part, which, sealed, lie against one another, wherein the discharge channel is separated at least in sections along the separating plane into a first discharge channel part arranged integrally on the first housing part and a second discharge channel part arranged integrally on the second housing part, wherein the discharge channel or the first and second discharge channel parts are passed through between the two channel arms of the feed channel, wherein either the first discharge channel part, forming a gas outlet opening arranged completely apart from the separating plane, opens out on a connecting surface of the first housing part for conducting gas, or the second discharge channel part, forming the gas outlet opening arranged completely apart from the separating plane, opens out on a connecting surface of the second housing part for conducting gas, and wherein the connecting surface is arranged at a distance from the impeller in a radial direction.

2. The side channel compressor according to claim 1, wherein the feed channel is separated at least in sections along the separating plane into a first feed channel part arranged integrally on the first housing part and a second feed channel part arranged integrally on the second housing part.

3. The side channel compressor according to claim 1, wherein the side channel is configured annularly and is configured to redirect the gas flowing through the side channel by at least 180°, by at least 200°, by at least 220°, by at least 240° or by at least 270°.

4. The side channel compressor according to claim 1, wherein the gas outlet opening is framed by a completely surrounding sealing seat which has an all-round contiguous and joint-free sealing surface.

5. The side channel compressor according to claim 4, wherein: the sealing surface is formed by the connecting surface, and/or the sealing surface is formed by a channel inner surface of the first discharge channel part or by a channel inner surface of the second discharge channel part.

6. The side channel compressor according to claim 1, wherein a transverse axis is defined which stands perpendicularly on the channel arm center axes, and wherein the separating plane is arranged transversely or at a right angle with respect to the transverse axis and/or parallel or substantially parallel with respect to each of the two channel arm center axes.

7. The side channel compressor according to claim 1, wherein the housing or the first housing part and the second housing part forms a tubular outlet connector extending along a connector center axis for letting gas out of the side channel, which on a pipe front end comprises the connecting surface, on which the gas outlet opening opens out.

8. The side channel compressor according to claim 7, wherein: the pipe front end connecting surface of the outlet connector forms a contiguous sealing surface of an axial sealing seat for an axial seal that is joint-free and completely surrounds the gas outlet opening, and/or the outlet connector furthermore comprises a circumferential axial sealing flange projecting radially from the outlet connector with respect to the connector center axis, which forms a contiguous sealing surface of an axial sealing seat for an axial seal that is joint-free and completely surrounds the gas outlet opening.

9. The side channel compressor according to claim 7, wherein the outlet connector comprises a channel inner surface of the first or second discharge channel parts that is orientated radially to an inside with respect to the connector center axis, and wherein this channel inner surface forms a contiguous sealing surface of a radial sealing seat for a radial seal that is joint-free and completely surrounds the gas outlet opening.

10. The side channel compressor according to claim 7, wherein: the outlet connector is inclined at an angle with respect to the separating plane, so that a sealing surface and gas outlet opening of the outlet connector are configured spaced apart from the separating plane and free of a separating plane, and/or the outlet connector is subdivided by the separating plane into a first connector part arranged in particular integrally on the first housing part and into a second connector part arranged in particular integrally on the second housing part, wherein the connecting surface is configured free of a separating plane and formed completely on the first or on the second connector part.

11. The side channel compressor according to claim 10, wherein between the first and second connector parts and the first and second discharge channel parts and/or the first and second feed channel parts a surrounding sealing tape, in particular a surrounding sealing cord, is arranged sandwich-like, and wherein the sealing tape, in particular the sealing cord, runs parallel to the separating plane or within the separating plane.

12. The side channel compressor according to claim 11, wherein the sealing tape, in particular the sealing cord, are touchingly supported on two planar circumferential sealing surfaces on both sides, wherein a first circumferential sealing surface is formed by the first housing part and wherein a second circumferential sealing surface is formed by the second housing part.

13. The side channel compressor according to claim 1, wherein one channel arm is arranged integrally on the first housing part and fluidically connected to the side channel, and wherein an other channel arm is arranged integrally on the second housing part and fluidically connected to the side channel.

14. The side channel compressor according to claim 1, wherein one channel arm of the two channel arms, forming a first gas inlet opening, opens out on a first plug-in surface on the first housing part aligned transversely with respect to the connecting surface, and wherein an other channel arm of the two channel arms, forming a further second gas inlet opening, opens out on a second plug-in surface on the second housing part that is aligned transversely with respect to the connecting surface.

15. The side channel compressor according to claim 14, wherein the side channel compressor comprises a separately formed one-piece Y-inlet connector, which comprises an inlet pipe for letting gas into the feed channel, which branches into two plug-in pipes, and wherein one plug-in pipe is plugged into the first gas inlet opening and a further plug-in pipe into the further second gas inlet opening.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The disclosure will now be described with reference to the drawings wherein:

(2) FIG. 1 shows a perspective view of a preferred exemplary embodiment of a side channel compressor according to the disclosure,

(3) FIG. 2 shows a sectional view of the side channel compressor from FIG. 1 according to a section plane indicated by arrow II there,

(4) FIG. 3 shows a perspective view obliquely from above of a housing part of the housing of the side channel compressor from FIG. 1 with view according to an arrow III entered there,

(5) FIG. 4 shows a perspective view of a preferred further exemplary embodiment of a side channel compressor according to the disclosure,

(6) FIG. 5 shows a sectional view of the side channel compressor from FIG. 4 according to a section plane indicated with arrow V there,

(7) FIG. 6 shows a perspective view obliquely from above of a housing part of the housing of the side channel compressor from FIG. 4 with view according to an arrow VI entered there, and

(8) FIG. 7 shows a perspective view of the side channel compressor from FIG. 4 as in FIG. 4, wherein on the housing of the side channel compressor a Y-inlet connector is arranged.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

(9) FIGS. 1 to 7 show two preferred exemplary embodiments of a side channel compressor altogether marked here and there with 1. These serve for compressing gas, for example air or blow-by gas of an internal combustion engine.

(10) According to FIG. 1, a perspective view of a preferred exemplary embodiment of a side channel compressor 1 according to the disclosure is illustrated, which for compressing gas comprises a housing 2, in which exemplarily a side channel 6 that can be flowed through by gas and a completely internal installation chamber 3 are formed, wherein in the installation chamber 3 an impeller drive 4 for driving or for compressing gas is arranged. Practically, the impeller drive 4 is regulatable and/or controllable by means of a drive control arranged on the housing 2 which is not illustrated here and suppliable by means of not illustrated supply lines. The impeller drive 4 is arranged within the housing 2 or within the installation chamber 3 so that its impeller 5 or its impeller blades can engage in the side channel 6 and fluidically interact with the gas in order to bring about the desired compression of the gas. The installation chamber 3, the impeller drive 4 and the impeller 5 are indicated in FIG. 1 by a small dashed-line box in a highly simplified manner.

(11) FIG. 2 shows in a sectional view the side channel compressor 1 from FIG. 1 according to a section plane indicated with arrow II there, wherein it is noticeable that the side channel 6, because of its circular or annular configuration is designed for redirecting the gas flowing through it by at least 270°. A feed channel 8 is connected to the side channel 6. The feed channel 8 serves for feeding gas towards the side channel 6, both channels are thus fluidically connected to one another. Furthermore, the feed channel 8 branches into two separate channel arms 9′, 9″ which exemplarily extend each parallel to one another, see also FIG. 1, wherein the two channel arms 9′, 9″ are spaced apart from one another in the direction of a transverse axis 11 connecting the two channel arm center axes 10 to one another. According to FIG. 2 it is noticeable, furthermore, that the side channel 6 is also connected to a discharge channel 14. The discharge channel 14 serves for discharging the compressed gas out of the side channel 6. The discharge channel 14 is also fluidically connected to the side channel 6.

(12) In order to achieve redirection of the gas by at least 270° with the side channel 6 and in order to achieve a relatively compact embodiment of the side channel compressor 1, for example in order to arrange the same in a space-saving manner in a motor vehicle, it is exemplarily provided, as is noticeable in FIGS. 1 and 2, that the discharge channel 14 is passed through between the two channel arms 9′, 9″. In a manner of speaking like the thread through the eye of a needle. Thus, the fluid flows intersect in different planes.

(13) In order to be able to produce the side channel compressor 1 relatively cost-effectively it is further exemplarily provided, see in particular FIG. 2, to define a planar separating plane 15, which is practically aligned transversely relative to the transverse axis 11 and parallel with respect to the two channel arm center axes 10. Here, the separating plane 15 is passed through between the two channel arms 9′, 9″ so that it exemplarily penetrates the transverse axis 11 equally. The housing 2 is now separated along the separating plane 15 into a first lower housing part 16 and a second upper housing part 17. The side channel 6, the feed channel 8 and the discharge channel 14 are separated along the separating plane 15, namely the side channel 6 into a first side channel part and a second side channel part, the feed channel 8 into a first feed channel part 18 arranged integrally on the first housing part 16 and a second feed channel part 19 arranged integrally on the second housing part 17 and the discharge channel 14 into a first discharge channel part 20 arranged integrally on the first housing part 16 and a second discharge channel 21 arranged integrally on the second housing part 17. In the assembled state of the side channel compressor 1, i.e., when the two housing parts 16, 17 touching lie on top of one another, all these channel parts are together in order to form the side channel 6, the feed channel 8 and the discharge channel 14.

(14) In order to discharge compressed gas out of the housing 2 or out of the side channel 6 it is exemplarily provided that the first discharge channel part 20, forming a gas outlet opening 22 arranged completely apart from the separating plane 15, opens out on a planar connecting surface 23 of the first lower housing part 16. Because it is located apart from the separating plane 15, the gas outlet opening 22 is not intersected by the separating plane 15, i.e., is separating joint-free. Because of this, for example a supply hose can be connected relatively easily and practically without leakage. It is conceivable, furthermore, but not shown, that alternatively the second discharge channel part 21, forming a gas outlet opening 22 that is arranged completely apart from the separating plane 15, opens out on a connecting surface 23 of the second housing part 17 for conducting gas out of the side channel 6.

(15) According to FIG. 2, a common hollow-cylindrical outlet connector 28 for letting gas out of the side channel 6 or out of the discharge channel 14 is formed on the first housing part 16 and on the second housing part 17. The outlet connector 28 protrudes over the housing parts 16, 17, extends along a connector center axis 29 and, on the pipe front end, has an annular front face, which exemplarily forms the connecting surface 23 limiting the gas outlet opening 22. Because of this, the outlet connector 28 is, by force, longitudinally penetrated by the first and second discharge channel part 20, 21. This has the effect that the connecting surface 23 is not necessarily arranged directly on the housing 2 or on the respective housing part 16, 17. Furthermore, the outlet connector 28 is inclined at a right angle with respect to the separating plane 15. Since the outlet connector 28 is arranged both on the first housing part 16 and also on the second housing part 17, it quasi intersects with the separating plane 15, so that it is separated below the separating plane 15 into a first connector part 33 arranged integrally on the first housing part 16 and above the separating plane 15 into a second connector part 34 arranged integrally on the second housing part 17. Thus, the outlet connector 28 quasi comprises a first and a second discharge channel part 20, 21. Furthermore it is noticeable in FIG. 2 that the connecting surface 23 framing the gas outlet opening 22 is arranged apart from the separating plane 15 and thus joint-free.

(16) Exemplarily, the connecting surface 23 forms a completely circumferential sealing seat 25, which has a sealing surface 26 that is contiguous all round and joint-free. The sealing seat 25 or the sealing surface 26 are likewise arranged completely apart from the separating plane 15 so that they are not intersected, i.e., quasi joint-free.

(17) To make it possible that components such as supply hoses or supply connectors can be connected to the outlet connector 28 in a radially sealed manner, it is provided according to the first exemplary embodiment that the sealing seat 25 or the sealing surface 26 forms a radial sealing seat 32, wherein a channel inner surface 27 of the first discharge channel part 20 that is orientated with respect to the connector center axis 29 radially to the inside forms the sealing surface 26. The channel inner surface 27, i.e., the sealing surface 26, is contiguous, joint-free and frames the gas outlet opening 22 all-round the connector center axis 29 completely.

(18) FIG. 3 shows a perspective view obliquely from above of the first lower housing part 16 of the housing 2 of the side channel compressor 1 from FIG. 2 with view according to an arrow III entered there. The first connector part 33 of the outlet connector 28 with gas outlet opening 22 and the channel inner surface 27 of the first discharge channel part 20 forming the sealing seat 25 or the sealing surface 26 are clearly noticeable.

(19) In FIGS. 2 and 3, two circumferential sealing surfaces 37, 38 are shown, furthermore, which are arranged exemplarily in a flanking manner along the first and second side channel part, the first and second connector part 33, 34, the first and second discharge channel part 20, 21 and the first and second feed channel part 18, 19. Here, the first circumferential sealing surface 37 is integrally formed by the first housing part 16, the second circumferential sealing surface 38 is integrally formed by the second housing part 17, see in particular FIG. 2. Exemplarily, the circumferential sealing surfaces 37, 38 are arranged parallel to or within the separating plane 15. In the assembled state of the side channel compressor 1, a circumferential and continuous sealing tape 35 or a circumferential and continuous sealing cord 36 are arranged sandwich-like between the two circumferential sealing surfaces 37, 38 in order to seal the side channel 6, see FIG. 2.

(20) In FIGS. 4 and 5, a preferred further exemplary embodiment of a side channel compressor 1 according to the disclosure is shown. In contrast with the exemplary embodiment described above it is provided here that the outlet connector 28 formed on the first and second housing part 16, 17 of the housing 2 is merely inclined at an angle with respect to the separating plane 15, i.e., not at a right angle. For example, the outlet connector 28 or its connector center axis 29 is inclined by 30° with respect to the separating plane 15. By way of this, the outlet connector 28 can also quasi dip through under the separating plane 15 in order to arrange the connecting surface 23 or the sealing surface 28 apart from the separating plane 14 in order to achieve a design free of a separating plane.

(21) FIG. 6 shows a perspective view obliquely from above of the first housing part 16 of the housing 2 of the side channel compressor 1 from FIG. 4 with view according to an arrow VI entered there, so that the outlet connector 28 is noticeable from the inside and the circumferential sealing surfaces 27 provided there. In FIG. 6, it is possible to quasi look into the side channel 6, namely once into the first feed channel part 18 of the feed channel 8 arranged integrally on the first housing part 16 and the first discharge channel part 20 of the discharge channel 14.

(22) In order to make it possible that components to be connected to the outlet connector 28, such as supply hoses or supply connectors cannot only be connected subject to radial sealing but also subject to axial sealing, a sealing seat 25 arranged on the outlet connector 28 forms an axial sealing seat 30 according to FIGS. 4 to 6. According to this exemplary embodiment, it is provided that the front-end connecting surface 23 of the outlet connector 28 forms a contiguous axial sealing surface 26 of the sealing seat 25 that is joint-free and completely surrounds the gas outlet opening 22.

(23) Finally, FIG. 7 shows a perspective view of the side channel compressor 1 from FIG. 4 as in FIG. 4, wherein on the housing 2 of the side channel compressor 1 a Y-inlet connector 43 is arranged. Furthermore, the axial sealing seat 30 is slightly modified. The axial sealing seat 30 according to FIG. 7, in contrast with FIGS. 4 to 6, comprises an axial sealing flange 31 arranged on the outlet connector 28. The axial sealing flange 31 defines a contiguous sealing seat 25 with sealing surface 26 that is joint-free and completely surrounds the gas outlet opening 22, which is also referred to as axial sealing seat 30. The axial sealing flange 31 projects, with respect to the connector center axis 29, radially away from the outlet connector 28. With respect to the Y-inlet connector 43 it is noticeable in FIG. 7 that the one channel arm 9′ of the two channel arms 9′, 9″, forming a first gas inlet opening 39 on a first plug-in surface 40 orientated transversely with respect to the connecting surface 23, opens out on the first housing part 16 and that the other channel arm 9″ of the two channel arms 9′, 9″, forming a further second gas inlet opening 41 on a second plug-in surface 42 orientated transversely with respect to the connecting surface 23 and parallel with respect to the first plug-in surface 40, opens out on the second housing part 17. The Y-inlet connector 43 in turn comprises an inlet pipe 44 for letting-in gas for the side channel 6 which branches into two plug-in pipes 45, 46. The one plug-in pipe 45 is plugged into the first gas inlet opening 39 and the further plug-in pipe 46 into the further second gas inlet opening 41.

(24) It is understood that the foregoing description is that of the exemplary embodiments of the disclosure and that various changes and modifications may be made thereto without departing from the spirit and scope of the disclosure as defined in the appended claims.