阅读说明：本技术 具有通道件的抽吸器 (Aspirator with channel member ) 是由 罗曼·波德霍尔尼 于 2020-02-19 设计创作，主要内容包括：本发明涉及抽吸器,其包括用于产生抽吸流的抽吸机组装置(50),其中,抽吸机组装置(50)具有带有鼓风机马达(62)的鼓风机(60)、用于保持鼓风机(60)和/或鼓风机马达(62)的鼓风机支架(72)以及用于过程空气的引导装置(70),其中,用于过程空气的引导装置(70)具有通道件(80),通道件具有在排气侧与鼓风机(60)联接的至少一个通道(82),通道件(80)安放在鼓风机支架(72)上,并且通道件(80)安放在鼓风机(60)或鼓风机马达(62)上。(The invention relates to an aspirator comprising an aspirator unit device (50) for generating a suction flow, wherein the aspirator unit device (50) has a blower (60) having a blower motor (62), a blower holder (72) for holding the blower (60) and/or the blower motor (62), and a guide device (70) for process air, wherein the guide device (70) for process air has a channel piece (80) having at least one channel (82) coupled to the blower (60) on an exhaust side, wherein the channel piece (80) rests on the blower holder (72), and wherein the channel piece (80) rests on the blower (60) or the blower motor (62).)

1. Aspirator comprising a suction assembly device (50) for generating a suction flow, wherein the suction assembly device (50) has a blower (60) with a blower motor (62), a blower bracket (72) for holding the blower (60) and/or the blower motor (62), and a guide device (70) for process air, characterized in that the guide device (70) for process air has a channel piece (80) with at least one channel (82) coupled with the blower (60) on an exhaust side, the channel piece (80) being located at the blower bracket (72), and the channel piece (80) being located at the blower (60) or the blower motor (62).

2. The aspirator of claim 1, having at least one of the following features:

-the channel piece (80) is formed in one piece;

-the channel piece (80) is formed in one piece;

-the channel member (80) is an integrally disposable unit at least at the time of manufacturing the aspirator;

-the channel piece (80) is made of an elastic material having a fluid-tight function and/or enabling a floating bearing.

3. An aspirator according to claim 1 or 2, characterised in that the channel member (80) has a first opening (96) and a second opening (100), wherein the second opening (100) is spaced apart from the first opening (96) in the axial direction (98).

4. The aspirator of claim 3, having at least one of the following features:

-the first opening (96) and the second opening (100) are oriented parallel to each other;

-the first opening (96) and/or the second opening (100) are oriented transversely, in particular perpendicularly, with respect to the axial direction;

-the first opening (96) and/or the second opening (100) is surrounded by a closed wall;

-the first opening (96) and/or the second opening (100) has a circular cross-section;

-the blower motor (62) is positioned within the second opening (100);

-the blower motor (62) is positioned in at least one partial region of the first opening (96).

5. The aspirator of any preceding claim, having at least one of the following features:

-the blower motor (62) is floatingly supported on the blower bracket (72) via the tunnel (80);

-the channel piece (80) forms a sealing device for sealing the blower motor (62), in particular with respect to the blower bracket (72) and/or with respect to a cooling air guide device (70) for the blower motor.

6. The aspirator according to claim 5, characterized in that the tunnel part (80) has a first partial region (102) which is supported on the blower bracket (72), and in that the blower motor (62) is supported on the first partial region (102), and in that in particular the first partial region (102) is positioned between the blower motor (62) and the blower bracket (72) with respect to an axial direction (98).

7. An aspirator according to claim 5 or 6, characterised in that the first partial region (102) surrounds the first opening (96) of the channel piece (80), and in particular the first partial region (102) forms a wall which closely surrounds the first opening (96).

8. The aspirator according to claim 7, characterized in that the first opening (96) has a first region (112) which forms or at least partially has a process air inlet-side connection of the air guide device (70) for process air at the blower (60).

9. The aspirator of claim 8, wherein the first opening (96) has a second region (114), the blower motor (62) being positioned on the second region (114).

10. The aspirator of claim 9, having at least one of the following features:

-the second region (114) follows the first region (112) in an axial direction (98);

-the second region (114) has a larger cross-sectional area, in particular a larger diameter, than the first region (112);

-the first partial region (102) of the channel piece (80) has a first contact surface (118) for the blower motor (62) on the second region (114) of the first opening (96), said first contact surface being used for axially supporting the blower motor (62);

-the first sub-region (102) has a second contact surface (120) for the blower motor (62) on a second region (114) of the first opening (96), for radially supporting the blower motor (62);

the first contact surface (118) and/or the second contact surface (120) are formed in an annular and, in particular, circular shape;

-the first abutment surface (118) and the second abutment surface (120) continuously transition into each other.

11. The aspirator according to any of the preceding claims, characterized by cooling air guiding means for the blower motor (62), wherein the channel piece (80) forms sealing means for the cooling air guiding means.

12. An aspirator according to any of the preceding claims, characterized in that a cover (84) is arranged on the blower motor (62), wherein at least one channel for cooling air guiding of the blower motor (62) is arranged or formed between the cover (84) and the blower motor (62).

13. The aspirator of claim 12, having at least one of the following features:

-the channel piece (80) is configured as a sealing means for achieving a fluid seal between the cover cap (84) and the blower motor (62);

-the channel piece (80) comprises a second partial region (104) which is arranged between a wall of the cover (84) and a wall of the blower motor (62) and forms a fluid seal;

-the channel piece (80) is configured for floating support of the cover cap (84) on the blower motor (62).

14. The aspirator of claim 13, having at least one of the following features:

-the second partial region (104) is axially spaced apart from the first partial region (102) of the tunnel part (80) which ensures the support and/or fluid-tight sealing of the blower motor (62) on the blower bracket (72);

-at least one channel (82) of the channel piece (80) is formed between the first partial region (102) and the second partial region (104);

-the second partial region (104) is designed as a projecting tab (126) which dips into a groove (128) on the blower motor (62);

-the tab (126) extends at least substantially in an axial direction (98);

the webs (126) are formed in an annular and in particular circular ring shape;

-the second partial region (104) surrounds a second opening (100) of the channel piece (80);

-a partial region of the cover (84) is positioned in the second opening (100).

15. An aspirator according to any preceding claim, in which the tunnel member (80) has a third partial region (106) forming a wall of the at least one tunnel (82).

16. The aspirator according to claim 15, characterized in that the third partial region (106) is arranged between a first partial region (102) of the tunnel part (80) and a second partial region (104) of the tunnel part (80), wherein the first partial region (102) ensures a support and/or a fluid-tight seal on the blower bracket (72) and the second partial region (104) ensures a fluid-tight seal and/or a support cover (84).

17. An aspirator according to claim 15 or 16, characterised in that the blower motor (62) forms a further wall of at least one channel (82) of the channel piece (80).

18. The aspirator according to claim 16 or 17, characterised in that a receptacle (130), in particular an annular receptacle, is formed on the inner side of the channel piece (80) between the second partial region (104) and the third partial region (106).

19. An aspirator according to any preceding claim, characterised in that a receptacle (130) is formed on the inner side of the channel piece (80), wherein a wall of the blower motor (62) is arranged on the receptacle (130).

20. The aspirator according to any preceding claim, characterized by a blower motor receiving portion (76) on which at least one receiving portion for the tunnel (80) is formed.

21. The aspirator of claim 20, having a first receiving portion (154) for a tab (152) of the channel member (80), having at least one of the following features:

-at least one web (152) is arranged on an upper side of the channel part (80), in particular facing away from the blower bracket (72);

-at least one web (152) is arranged on a second partial region (104) of the channel part (80) which ensures a seal against the cover (84);

-at least one tab (152) extending in an axial direction (98);

-preventing radial displaceability of the channel piece (80) relative to the blower motor (62) when at least one tab (152) is sunk in the receptacle (154).

22. Aspirator according to claim 20 or 21, characterized by a second receiving part having a shoulder (124) and having at least one of the following features:

-the channel piece (80) has a shoulder (122) for mating with the second receiving portion;

-the shoulder (122) of the channel part (80) is formed on a first partial region (104) which ensures support and/or tightness on the blower bracket (72);

-the second receptacle prevents radial and/or axial movability of the blower motor (62).

23. The aspirator according to any of claims 20 to 22, characterized by a third receptacle which prevents radial movability and in particular also ensures pressing of the channel piece (80) in radial direction.

24. The aspirator according to any of the preceding claims, characterized in that the channel member (80) forms a first axial sealing means and a second axial sealing means spaced apart from the first axial sealing means, and at least one of the sealing means is radially compressed.

25. The aspirator according to any one of the preceding claims, characterized in that the channel piece (80) has at least one tongue (156) and a mating element (160) for the at least one tongue (156) is assigned to the blower bracket (72), wherein, when a tongue (156) is fixed on the mating element (160), a rotatability of the channel piece (80) relative to the blower bracket (72) is prevented.

26. The aspirator of claim 25, in which the at least one tongue (156) has an opening (158) and the engagement element (160) is a pin for passing through the opening.

27. The aspirator of any preceding claim, in which the blower motor (62) is axially clamped.

28. The aspirator according to any of the preceding claims, characterized in that at least one channel (82) of the channel piece (80) has an output (94) which opens directly or via a tube element into an outlet for discharging process air exhaust to the surroundings of the aspirator.

29. The aspirator of claim 28, in which the output end (94) of the at least one passage (82) has a circular cross-section.

30. The aspirator of any preceding claim, wherein the at least one passage (82) extends around the blower motor (62).

31. An aspirator according to any preceding claim, characterised in that the at least one passage (82) has a course of trajectory extending around an axis parallel or coaxial to the motor axis (66).

32. Aspirator according to any preceding claim, characterized in that the at least one channel (82) has a spiral trajectory.

33. The aspirator of any preceding claim, having a suction head (36) and a aspirate container (22), wherein the suction head (36) is detachably arranged on the aspirate container (22).

34. The aspirator of claim 33, in which the blower motor (62) is arranged on the suction head (36).

35. An aspirator according to any preceding claim, having a vertical axis (40), wherein motor axis (66) is oriented at an acute angle (68) to the vertical axis (40).

36. The aspirator according to any of the preceding claims, characterized by a constructive solution as at least one of the following features:

-as a stand-alone device;

as a wet and dry vacuum cleaner.

Technical Field

The invention relates to a suction device comprising a suction unit arrangement for generating a suction flow, wherein the suction unit arrangement has a blower with a blower motor, a blower holder for holding the blower and/or the blower motor, and a guide for process air.

Background

US 2014/0026355 a1 discloses a wet and dry suction machine.

US 8,297,949B 1 discloses a suction machine.

WO 2013/139833 a1 discloses a suction set for a suction machine.

CH 440589 discloses a vacuum cleaner with a spiral housing having a rear end wall inclined with respect to a longitudinal central axis, wherein the spiral housing cross section increases towards the nipple.

US 2007/0151072 a1 discloses a vacuum cleaner having an exhaust gas flow path.

DE 202018105372U 1 discloses a device for the groove suction of exhaust gases generated on a hob.

JP H10-252696 discloses a centrifugal compressor.

US 2009/0095360 a1 discloses a vacuum cleaner having multiple exhaust air output positions.

Disclosure of Invention

The object of the present invention is to provide an aspirator of the type mentioned at the outset which can be produced in a simple manner and/or has an optimized fluid-tight structure.

According to the invention, in the suction device mentioned at the beginning, this object is achieved in that the guide device for the process air has a tunnel part with at least one tunnel which is coupled to the blower on the exhaust side, the tunnel part rests on the blower bracket and the tunnel part rests on the blower or blower motor.

The channel piece can be constructed in a multifunctional manner: it first forms a channel for conducting out process air from the blower. Since the channel part is placed on both the blower support and the blower or blower motor, the channel can be designed as a sealing device which seals the blower or blower motor in a fluid-tight manner with respect to the blower support. In addition, this makes it possible to achieve a liquid-tight seal against the blower motor in a simple manner. Furthermore, a sealing device can be integrated into the tunnel part, which seals off the cooling air guide for the blower motor.

Furthermore, a floating mounting of the blower motor or blower in particular can be achieved via the channel device. This enables, for example, vibration decoupling and noise reduction to a minimum.

An optimized low-resistance air guidance is achieved via the channel element, so that an energy-saving suction operation can be achieved.

By means of the channel piece, the aspirator can be manufactured in a simple manner. During production, the duct piece can be positioned in a simple manner relative to the blower, and the number of components required can be kept low by the multifunctional construction.

Advantageously, the duct element is formed in one piece and/or the duct element is an integrally disposable unit at least during the production of the suction device and/or the duct element is made of an elastic material which has a fluid-tight function and/or enables a floating bearing. The number of components required is thereby kept low.

In one embodiment, the channel member has a first opening and a second opening, wherein the second opening is spaced apart from the first opening in the axial direction. In this way, the channel part can be fitted to the blower/blower motor in a simple manner. It can be positioned in a simple manner with respect to the blower. It is possible to achieve the sealing function in a simple manner. In this case, it is possible for the sealing function to be implemented, for example, on a circular surface. This results in a simple manufacturability.

In particular, at least one of the following features is provided:

-the first opening and the second opening are oriented parallel to each other;

the first opening and/or the second opening are oriented transversely, in particular perpendicularly, to the axial direction;

the first opening and/or the second opening is surrounded by a closed wall;

the first opening and/or the second opening have a circular cross section;

-the blower motor is positioned in the second opening;

the blower motor is positioned in at least one partial region of the first opening.

A simple manufacturability of the channel element is thus obtained. Furthermore, the aspirator can be manufactured in a simple manner when manufacturing the aspirator.

In particular, it is provided that the blower motor is mounted in a floating manner on the blower support via the tunnel part, and/or that the tunnel part forms a sealing device for sealing the blower motor, in particular with respect to the blower support and/or with respect to a cooling air guide for the blower motor. A multifunctional construction is thereby obtained. For example, the blower motor can be mounted in a floating manner by means of a single duct element, and in particular can be sealed with respect to the blower bracket and the cooling air guide.

In one embodiment, the duct piece has a first partial region which is supported on the blower bracket, and wherein the blower motor is supported on the first partial region, and wherein in particular the first partial region is positioned between the blower motor and the blower bracket with respect to the axial direction. A fluid seal between the blower bracket and the blower motor can thereby be achieved. In addition, a floating mounting of the blower motor or blower bracket is also thereby still possible.

It is then advantageous if the first subregion encloses the first opening of the duct piece, and in particular here the first subregion forms a wall which encloses the first opening in a closed manner. The corresponding channel element can be produced in a simple manner. Furthermore, a corresponding aspirator can be manufactured in a simple manner.

For the same reason, it is advantageous if the first opening has a first region which forms, or at least partially accommodates, an inlet-side connection for process gas of the air guide for process air at the blower. This allows a simple coupling of the blower to the air guide via the duct element.

Furthermore, it is advantageous if the first opening has a second region, on which a blower motor is positioned. In this way, a simple and optimized positioning between the blower motor and the tunnel can be achieved.

In particular, at least one of the following features is then provided:

the second region follows the first region in the axial direction;

the second region has a larger cross-sectional area and in particular a larger diameter than the first region;

the first partial region of the duct part has a first contact surface for the blower motor in the second region of the first opening, the first contact surface being used for axially supporting the blower motor;

the first partial region has a second contact surface for the blower motor on a second region of the first opening, the second contact surface being used for radially supporting the blower motor;

the first contact surface and/or the second contact surface are formed annularly, in particular annularly;

the first contact surface and the second contact surface merge continuously into one another.

Thereby providing a multi-functional channel member. The coupling of the blower to the air guide device takes place via the channel piece. The fluid-tight and floating mounting of the blower/blower motor can be realized via the channel piece relative to the blower bracket.

Preferably, a cooling air guide for the blower motor is provided, wherein the channel piece forms a sealing device for the cooling air guide. It is then not necessary to provide a separate sealing device for the fluid-tight sealing of the cooling air guide device in addition to the channel elements.

In one embodiment, a cover is arranged on the blower motor, wherein at least one channel for guiding cooling air of the blower motor is arranged or formed between the cover and the blower motor. This makes it possible to realize the cooling air guide device in a simple manner.

In particular, at least one of the following features is provided:

the channel part is configured as a sealing device for achieving a fluid seal between the cover and the blower motor;

the channel piece comprises a second partial region which is arranged between the wall of the cover and the wall of the blower motor and forms a fluid seal;

the duct element is designed for the floating mounting of the cover on the blower motor.

This makes it possible to provide a multifunctional channel element which also ensures a fluid-tight seal with respect to the cooling air guide.

In particular, at least one of the following features is provided:

The second partial region is axially spaced apart from the first partial region of the tunnel part which ensures a fluid-tight and/or bearing of the blower motor on the blower bracket;

at least one channel of the channel piece is formed between the first partial region and the second partial region;

the second partial region is designed as a projecting tab which is sunk into a groove on the blower motor;

the webs extend at least approximately in the axial direction;

the webs are annular and are in particular circular;

the second partial region surrounds the second opening of the channel piece;

-a partial region in which the cover is positioned in the second opening.

A multifunctional channel element can thus be provided and a fluid-tight seal with respect to the cooling air guiding device can be achieved in a simple manner.

In particular, it is provided that the channel part has a third partial region which forms a wall of the at least one channel. The air guiding function of the channel element can thereby be realized in a simple manner.

In particular, the third partial region is arranged between a first partial region of the duct part, which ensures a fluid-tight and/or bearing on the blower bracket, and a second partial region of the duct part, which ensures a fluid-tight and/or bearing on the cover. A multifunctional channel piece can thus be realized in a simple manner.

Advantageously, the blower motor forms a further wall of the at least one channel of the channel piece. Thereby, the at least one channel can be closed via the blower motor and in particular the housing of the blower motor. This allows the number of parts to be kept low and a simple assembly to be achieved. In particular, the channel part can be fitted to the blower/blower motor, for example, in a simple manner.

In one embodiment, a receptacle, in particular an annular receptacle, is formed on the inner side of the channel piece between the second partial region and the third partial region. This makes it possible to position the corresponding mating element of the blower/blower motor on the receptacle in order to achieve a secure fastening of the tunnel part.

In particular, a receptacle, such as a groove or a shoulder, is formed on the inner side of the channel piece, wherein a wall of the blower motor is arranged on the receptacle. This enables a secure fastening of the tunnel part to the blower motor or blower.

Advantageously, a blower motor receptacle is provided, on which at least one receptacle for the tunnel part is formed. Axial and radial fixing of the blower/blower motor on the suction head of the suction unit can thereby be achieved in a simple manner. For example, it is also possible to clamp the blower or the blower motor in the suction head, wherein the number of screw elements for fastening the blower/blower motor to the blower bracket can then be kept low or even no screws are required.

In one embodiment, a first receptacle for a web of the channel piece is provided, which has at least one of the following features:

at least one web is arranged on an upper side of the channel part, which in particular faces away from the blower bracket;

at least one web is arranged on a second partial region of the channel piece which ensures a seal against the cover;

-at least one tab extending in an axial direction;

when the at least one web is inserted into the receptacle, the radial displaceability of the channel part relative to the blower motor is prevented.

This makes it possible to further fix the combination of the tunnel part and the blower/blower motor and in particular to prevent rotation.

For the same reason, it is advantageous to provide a second receptacle part which has a shoulder and has at least one of the following features:

the through-piece has a shoulder for mating with the second receiving portion;

the shoulder of the duct element is formed on the first partial region which ensures the seal and/or the support on the blower bracket;

the second receptacle prevents a radial and/or axial displaceability of the blower motor or of the blower.

This makes it possible to attach the blower/blower motor to the aspirator in a simple manner.

In particular, a third receptacle is provided, which prevents radial displaceability and in particular also ensures a pressing of the channel element in the radial direction. An axial seal with radial compression can thereby be achieved via the channel piece.

It is more particularly advantageous if the channel parts form a first axial seal and a second axial seal spaced apart from the first seal, and at least one of the seals is radially compressed. The first axial seal is used in particular to achieve a fluid-tight seal between the blower bracket and the blower/blower motor. The second axial seal serves in particular for sealing the cooling air guide for the blower motor. Thereby making the channel member multifunctional.

In one embodiment, the channel part has at least one tongue, and the blower bracket is assigned a mating element for the at least one tongue, wherein a rotational movement of the channel part relative to the blower bracket is prevented when the tongue is fixed to the mating element. This enables the aspirator to be manufactured in a simple manner. In addition, the exact position of the channel part is thus predetermined during the production of the suction device.

In a structurally simple embodiment, the at least one tongue is provided, and the counter element is a pin for passing through the opening. This makes it possible to position the duct piece relative to the blower bracket during the production of the suction device in a simple manner.

Advantageously, the blower motor/blower is axially clamped. This results in a simple and space-saving design of the suction device.

At least one channel of the channel piece has an outlet which opens directly via a pipe element into an outlet for discharging the process air exhaust into the surroundings of the extractor. This results in an optimized and in particular low-resistance flow profile for the process air exhaust.

Advantageously, the outlet end of at least one channel has a circular cross-section. A low resistance air guidance is thus obtained.

Advantageously, the at least one channel extends around the blower motor. An optimized flow guidance for the process air is thus obtained.

In particular, at least one channel has a trajectory running around an axis parallel or coaxial to the motor axis. The course about the axis means that the course of the path can be mathematically represented in a polar coordinate with the motor axis as a pole and the respective polar angle.

In particular, at least one channel has a spiral path, i.e., at least one channel is designed as a spiral. An optimized flow guidance is thereby obtained.

In one embodiment, a suction head and a suction container are provided, wherein the suction head is arranged on the suction container in a detachable manner. This enables the aspirate container to be cleaned and emptied in a simple manner when the suction head is removed.

In particular, the blower motor (and the blower) is arranged on the suction head.

In one embodiment, the aspirator has a vertical axis, wherein the motor axis is oriented at an acute angle to the vertical axis. Thereby an optimized space utilization is obtained.

The suction device can be designed as a stand-alone device and in particular as a wet-dry suction device. Liquid tightness of the blower motor can also be achieved by means of the multifunctional channel part. In principle, it is also possible for the suction device to be integrated into a vehicle, for example.

Drawings

The following description of the preferred embodiments is provided to explain the present invention in detail by referring to the figures. Wherein:

FIG. 1 shows a schematic cross-sectional view of an embodiment of an aspirator according to the present disclosure;

FIG. 2 shows a cross-sectional view along the line 2-2 according to FIG. 1;

Fig. 3 shows an enlarged view of the region a according to fig. 1;

FIG. 4 shows a cross-sectional view along the line 4-4 according to FIG. 3;

FIG. 5 shows a cross-sectional view along the line 5-5 according to FIG. 3;

FIG. 6 shows a cross-sectional view along the line 6-6 according to FIG. 3;

FIG. 7 shows a cross-sectional view along the line 7-7 according to FIG. 3;

fig. 8 shows an enlargement of the region B according to fig. 3;

fig. 9 shows an enlargement of the region C according to fig. 3;

FIG. 10 shows a top view of an embodiment of a channel member;

FIG. 11 shows a cross-sectional view along the line 11-11 according to FIG. 10;

FIG. 12 shows a perspective view of the channel piece according to FIG. 10;

FIG. 13 shows a further sectional view of the aspirator according to FIG. 1;

fig. 14 shows an enlargement of the region D according to fig. 13;

FIG. 15 shows a cross-sectional view along the line 15-15 according to FIG. 13;

fig. 16 shows an enlargement of the region E according to fig. 15;

fig. 17 shows a diagram similar to the diagram in fig. 16 in a variant; and is

Fig. 18 schematically shows a measuring device for knowing the liquid level.

Detailed Description

The embodiment of the extractor according to the invention shown in the figures and designated by 20 is configured as a stand-alone extractor. The extractor 20 is in particular configured as a wet-dry extractor capable of extracting liquids and dust.

Aspirator 20 includes aspirate container 22. Aspirate container 22 has a bottom 24 and a wall 26. The walls 26 and the bottom 24 define an interior space 28. The interior space 28 can contain aspirant. It is also possible to position a suction bag (for dry suction operation) in the interior 28.

In one embodiment, aspirate container 22, and thus aspirate 20, is configured to be movable. A wheel arrangement 30 is arranged on the aspirate container 22. The wheel axis 32 is oriented transversely to the plane of the drawing in fig. 1.

At a distance from the wheel arrangement 30, a steerable roller 34 or a plurality of steerable rollers 34 are positioned on the aspirate container 22.

A suction head 36 is mounted on the aspirate container 22. The suction head 36 can be removed from the aspirate container 22 in order to enable access to the interior space 28, in particular in order to be able to empty and to be able to clean the interior space 28.

A fastening device 38 is provided, by means of which the suction head 36 can be fastened to the suction container 22.

Aspirator 20 has a vertical axis 40 extending from aspirate container 22 to suction head 36. The vertical axis 40 is transverse and in particular perpendicular to the wheel axis 32.

When the extractor 20 is placed on a flat ground surface 42, then the vertical axis is perpendicular to the ground surface 42.

Suction connection 44 is associated with aspirate container 22. In one embodiment, the suction interface 44 is positioned on the suction tip 36.

A suction hose 46 can be coupled to the suction connection 44.

A pipe element 46, in particular a bent pipe element, is guided from the suction connection 44 into the interior 28. The pipe element 46 has a nipple 48 which projects into the interior space 28.

It is also possible for the suction connection 44 to be arranged directly on the aspirate container 22.

When a suction bag is used, the corresponding open nipple of the suction bag can be pushed onto the nipple 48.

The aspirator 20 includes an aspirator assembly device 50 for generating a suction flow. The suction stream loads the interior space 28 of the aspirate container 22. Suction can be achieved via this suction flow. A suction flow is applied to the suction connection 44. This suction flow is indicated by a double arrow in fig. 1.

Aspirator 20 has a filter device 52. The filter device 52 is arranged, for example, in a removable manner on the suction head 36.

The filter device 52 has a clean side 54 and a dirty side 56. The dirty side 56 faces the interior space 28 of the aspirate container 22.

The suction flow passes through the filter device 52 and the suction flow is cleaned by the filter device 52. Starting from the clean side 54 of the filter device 52, the suction flow is not contaminated.

A cleaning device 58 for the filter device 52 is arranged on the suction head 36. The filter device 52 is purified by the purification device. For example, the impinging air generated by the purifying device 58 causes dirt particles adhering to the filter device 52 to fall into the interior space 28 of the aspirate container 22.

The suction set arrangement 50 includes a blower 60 having a blower motor 62. The blower 60 has an impeller 64 that is driven to rotate by a blower motor 62.

The blower motor 62 has a motor axis 66 that is coaxial with the axis of rotation of the impeller 64.

In one embodiment, the motor axis 66 is at an acute angle 68 to the vertical axis 40.

In one embodiment, the acute angle 68 is approximately 65 °.

In principle, it is also possible for the motor axis 66 to be aligned, for example, parallel to the vertical axis 40.

The extractor 20 has a guide for process air, which is designated as a whole by 70. The guide 70 for the process air is arranged on the suction head 36. The process air is guided via a guide device over the suction head 36 and is discharged as process air exhaust. The process air which is guided is in this case the air which is cleaned by the filter device 52. In the case of wet operation of the extractor 20, the process gas can in principle be loaded with liquid.

A blower bracket 72 is arranged on the suction head 36. The blower bracket 72 forms a base plate for fixing the blower motor 62.

In one embodiment, the blower motor 62 is integrated into the blower 60; the blower motor 62 and the blower 60 have, in particular, a common housing 74 in which motor elements, such as a stator and a rotor, are arranged and in which the impeller 64 is arranged.

In this sense, the blower holder 72 then holds the blower 60 with the blower motor 62.

A receptacle 76 for the blower 60/blower motor 62 is arranged or formed on the suction head 36.

The guide device 70 for the process air has one or more channels 78 which lead from the clean side 54 of the filter device 52 to the blower 60.

A tunnel 80 is provided on the blower bracket 72 and the blower 60/blower motor 62. The channel plate 80 has a channel 82 which is coupled to the blower on the exhaust side. Process air exhaust can be discharged to the surroundings of extractor 20 via this channel 82. Furthermore, the tunnel member 80 is arranged and constructed such that it is positioned on the input side with respect to the blower 60. This will be explained in more detail below.

The channel piece 80 is formed in one piece or integral piece. In particular, it is configured such that it is an integrally disposable unit when the extractor 20 is manufactured, and in particular can be integrally fixed to the suction head 36. The channel element 80 has the task of providing a channel 82 of the guide device 70 for the process air for conducting out the exhaust gas. The tunnel member 80 also has a sealing function and a supporting function. The material for the channel member 80 is selected accordingly. In particular, the channel piece is made of a single material.

In one embodiment, the tunnel member is made of a vulcanized rubber material such as EPDM (ethylene-propylene-diene rubber).

In other embodiments, the tunnel 80 is made of a thermoplastic elastomer (TPE).

The tunnel 80 is disposed on the blower bracket 72. Furthermore, it is arranged on the blower 60/blower motor 62. In addition, a cover 84 associated with the blower motor 62 is arranged on the tunnel 80.

Channel member 80 has a footprint area 86 in which channel 82 is formed, and footprint area 86 has a wall 88 that bounds channel 82 outwardly from blower 60/blower motor 62. The channel member 80 is open opposite the wall 88. A further wall 90 for closing off the channel 82 is formed by the blower 60/blower motor 60 and in this case by the housing 74.

The path region 86 has a path course with a course about the axis that is coaxial to the motor axis 66. It should be understood that the respective trajectory profile of the trajectory region 86 can be represented by polar coordinates, wherein the motor axis 66 forms a pole. The corresponding course of the trajectory is indicated by the distance from the pole (motor axis 66) and the pole angle.

For example, the trajectory profile in trajectory region 86 is circular.

In one embodiment (see, e.g., fig. 6), the wall 88 may, for example, follow a spiral path. The spiral on which is based is for example an archimedean spiral or a logarithmic spiral. The trajectory region 86 is then in particular designed as a volute.

In particular, it is provided that the diameter 92 (see fig. 6) of the channel 82 increases continuously toward the outlet end 94 of the channel element 80.

In particular, the channel 82 is circular in cross-section and the output end 94 has a circular cross-section (see also fig. 12, for example).

The channel member 80 (see fig. 10-12) has a first opening 96 and a second opening 100 spaced apart in the axial direction 98. The axial direction 98 is coaxial with the motor axis 66.

The first opening 96 and the second opening 100 are parallel to each other. They are oriented transversely and in particular perpendicularly with respect to the axial direction 98.

First and second openings 96 and 100, respectively, are defined outwardly through wall 88. The passage member 80 is opened inward. Thereby an easier coupling to the blower 60 is obtained.

The channel member 80 has a first subregion 102. The first subregion 102 surrounds the first opening 96 and forms a wall for the first opening 96.

The channel piece 80 also has a second subregion 104. The second subregion 104 surrounds the second opening 100 and forms a wall for the second opening 100.

A third subregion 106 of the channel part 80 is arranged between the first subregion 102 and the second subregion 104. The third subregion 106 forms the wall 88 as an outer wall of the channel 82.

The first subregion 102 is supported on the blower bracket 72 on a first side 108 (see, for example, fig. 8, 9). The blower 60/blower motor 62 is supported on a second side 110 of the first subregion 102, which is opposite the first side 108. Thus, the first partial region 102 is positioned between the blower 60/blower motor 62 and the blower mount 72.

The channel piece 80 forms a first sealing means via a first partial region 102. The first sealing means seals blower motor 62/blower 60 towards passageway 82.

The first opening 96 formed by the first subregion 102 is designed as or accommodates an interface via which the duct 82 is coupled to the blower 60 on the input side with respect to the process air.

The first subregion 102 of the tunnel part 80 also ensures that the blower 60/blower motor 62 is supported in a floating manner on the blower bracket 72.

The first opening 96 has a first region 112, which ensures that the channel 82 is coupled to the blower 60.

The first opening 96 also has a second region 114, on which the second side 110 is present and which is coupled to the first region 112 in the axial direction 98.

The second region 114 has a diameter which is greater than the diameter of the first region 112.

A support surface 116 is formed on the second side 110, on which the blower 60/blower motor 62 is supported. The support surface 116 has a first contact surface 118 and a second contact surface 120. The first contact surface 118 serves to axially support the blower 60/blower motor 62 relative to the axial direction 98. The second abutment surface 120 also serves to provide radial support in a radial direction transverse to the axial direction 98. The first abutment surface 118 and the second abutment surface 120 merge continuously into one another. The respective bracketing surfaces formed by the first bearing surface 118 and the second bearing surface 120 are annular in shape here.

The blower 60/blower motor 62 is positioned and held in the second region 114.

The blower 60/blower motor 62 and the cover 84 are here positioned in the first opening 96.

The first subregion 102 has a shoulder 122 on its outer side.

The receptacle 76 in the suction head 36 has a matching shoulder 124 with the shoulder 22, against which the shoulder 122 of the channel piece 80 bears.

Axial and radial displaceability of the channel piece 80 relative to the suction head 36 is thereby prevented.

A mating shoulder 124 is formed on the suction head 36 for a second receptacle of the channel piece 80.

The second subregion 104 has a first web 126 which extends substantially parallel to the axial direction 98 and is directed in the direction of the second subregion 104.

The housing 74 has a slot 128. The first web 126 is sunk into the annular groove 128.

On the inner side 129 of the channel piece 80, a receiving portion 130, for example a groove, is formed on the channel piece 80. The receptacle 130 is formed here between the first subregion 102 and the third subregion 106.

In this receptacle 130, a wall region 132 of the housing 74 of the blower 60/blower motor 62 is recessed, wherein this wall region 132 delimits the groove 128.

A wall region 134 of the cover 84 also dips into the groove 128, the first web 126 being located between the wall region 134 of the cover 84 and the wall region 132 of the blower 60/blower motor 62.

The first web 126 and in this case in particular the second subregion 104 forms a fluid seal between the cover 84 and the blower 60/blower motor 62.

It is also possible for the cover 84 to be mounted in a floating manner on the blower 60/blower motor 62 via the second subregion 104 of the duct element 80.

Via the second partial region 104, a second axial seal is formed by the channel 80, which second axial seal ensures a gas-tight seal between the cover 84 and the housing 74.

The cover 84 is dome-shaped. In particular, it has an opening 136 (see fig. 4), in particular coaxially with the motor axis 66.

A fan wheel 140 assigned to the opening 136 is arranged on the shaft 138 of the blower motor 62. The fan wheel 140 is in particular spaced apart from the impeller 64. As the shaft 138 rotates, the fan wheel 140 rotates about the same axis of rotation as the impeller 64, that is, about an axis coaxial with the motor axis 66. Thereby enabling cooling air to be drawn through the openings 136.

The openings 136 are correspondingly connected to an interface on the suction head 36, via which cooling air can be sucked in.

The cover 84 surrounds a partial region of the blower motor 62. One or more channels 142 for the air cooling of the blower motor 62 are formed between the cover and the partial region.

The cooling air drawn through the openings 136 can flow in one or more channels 142 and, in the process, around corresponding housing regions 144 of the blower motor 62.

An outlet 146 is arranged on the cover 84, to which a pipe 148 is connected, which leads to the connection 51 for cooling air on the suction head 36 (see fig. 2; the guidance of the cooling air is illustrated in fig. 2 by a dashed double arrow).

A second web 152 or a plurality of second webs 152 (see fig. 8, 10, 12) is also arranged on the second subregion 104.

These tabs rest on the upper side of the channel piece 80 and are directed away from the second subregion 104 in the upward direction.

In particular, the one or more second tabs 152 are oriented at least substantially parallel to the axial direction 98.

A first receptacle 154 (see fig. 8) is assigned to receptacle 76 on suction head 36, into which one or more second webs 152 at least partially sink.

One or more tongues 156 are arranged on the second subregion 104 of the channel part 80 (see fig. 10). The corresponding tongue 156 has an opening 158 (see fig. 7). A mating element 160 associated with the blower carrier 72 is arranged on the suction head. The counter element is in particular designed as a pin element which is sunk into the opening 158.

In one embodiment, two tongues 156 and corresponding two mating elements 160 are provided.

During the production of the suction unit 20, the channel parts 80 can be positioned in a rotationally fixed manner relative to the blower bracket 72 on the respective mating element 160 by means of the fixing of the tongues 156 and are therefore correctly oriented.

From the outlet 94 of the channel piece 80, a pipe element 162 leads to an outlet on the suction head 36 (see fig. 6), via which the process air exhaust can be discharged to the surroundings of the extractor 20.

It is also possible for the channel piece 80 to open with its outlet end 94 directly into the outlet.

The channel piece 80 is a multifunctional component, which is realized in particular as a one-piece component:

it forms a channel 82 through which process air exhaust can be conducted from blower 60.

The interface of blower 60 on channel 82 is at least partially formed via first opening 96 of channel member 80.

The duct part 80 forms a first sealing device via the first subregion 102, via which the blower 60/blower motor 62 is sealed in a fluid-tight manner with respect to the blower carrier 72. In addition, the channel member 80 ensures that no suction flow of entrained liquid can reach the blower motor 62.

Furthermore, the blower 60/blower motor 62 is mounted in a floating manner via the first partial region 102 of the tunnel 80. This enables vibration decoupling to a certain extent and reduces noise development.

The first sealing device is in particular an axial sealing device.

Furthermore, the duct part 80 forms a second sealing device via the second subregion 104, via which the cover 84 is mounted in a fluid-tight manner on the blower 60/blower motor 62. This achieves a fluid-tight seal of the cooling air guide for cooling the blower motor 62.

Furthermore, a certain vibration decoupling of the cover 84 can be achieved.

The channel piece 80 is positioned in the receptacle 76, in particular, by being radially compressed.

The blower 60/blower motor 62 is in particular axially clamped. Corresponding holding portions 162 are provided which ensure this axial clamping. The blower motor 62/blower 60 can thus be fixed in the suction head 36 in a simple manner. The aspirator 20 can be manufactured in a simple manner. A space-saving arrangement with a high degree of fluid tightness is thereby obtained.

The tunnel member 80 is fitted over the blower 60 having the blower motor 62.

Effective flow guidance with low flow resistance can also be achieved via the channel piece 80. A high efficiency of operation of the aspirator 20 is thereby obtained.

The aspirator 20 can be manufactured in a simple and inexpensive manner. The number of components can be minimized due to the multi-functional configuration of the channel member 80.

Aspirator 20 includes a measurement device 164 (see, in particular, FIGS. 13-18) for knowing a liquid level 166 in aspirate container 22. In particular, the measuring device 164 is designed as a threshold device which checks whether a specific threshold value of the liquid level 166 is reached; in the wet suction operation of the aspirator 20, liquid is sucked in and contained in the aspirate container 22. The aspirator 20 should be prevented from being "filled". Via the knowledge of the liquid level 166 and in particular the threshold value, for example, a timely switching off of the suction operation can be carried out via the measuring device 164.

The measuring device 164 includes a probe device 168. The probe device 168 has a first bending spring element 170 and a second bending spring element 172. The first bending spring element 170 and the second bending spring element 172 are spaced apart from one another in a transverse direction 174, which is in particular parallel to the wheel axis 32.

In one embodiment, the probe device 168 is disposed on the suction tip 36.

In principle, it is also possible for probe device 168 to be arranged on aspirate container 22, or in a first part on suction head 36 and in a second part on aspirate container 22.

The complete arrangement of the probe device 168 on the suction head 36 has the advantage that the electrical components of the measuring device 164 arranged in the suction head 36 can be brought into fixed electrical contact with the probe device 168. When probe device 168 is arranged on aspirate container 22, a corresponding electrical contact must be ensured when placing suction head 36 on aspirate container 22.

When the suction head 36 is placed on the aspirate container 22, the first curved resilient element 170 and the second curved resilient element 172 project into the interior space 28 of the aspirate container 22 in the operating position.

In one embodiment (particularly fig. 15 and 16), the first and second curved resilient elements 170 and 172, respectively, are configured as wire elements 176. It is in the form of a wire, rope or wire and is made of an electrical conductor.

The first 170 and second 172 flexural spring elements are held on a bracket 182 of the suction head 36 via first 178 and second 180 fixing locations, respectively.

The respective curved resilient members 170, 172 are freely suspended between the first and second fixed positions 178, 180.

The first fastening point 178 and the second fastening point 180 are here at the same height relative to the vertical axis 40, the fastening points 178, 180 for the two bending spring elements 170, 172 being at the same height.

The first and second curved resilient members 170, 172 have an arcuate shape between respective first and second fixed locations 178, 180.

The first fastening locations 178 are located in the region of the first ends 184 of the respective curved spring elements 170, 172. The second attachment location 180 is located in the area of the second end 186.

In one embodiment, the respective bending spring element 170 is fastened to the carrier 162 in such a way that a pin element 188 is arranged in the region of its ends 184, 186, which pin element is fastened to the carrier 162 and is pressed into place, for example. For example, the pin element 188 is extruded or glued with the wire element 176.

In the initial position (see, for example, fig. 13, 16), the first bending spring element 170 and the second bending spring element 172 have an extension on the vertical axis 40 such that they have a point or region 190 at a minimum distance from the bottom 24 of the aspirate container 22. This region 190 is particularly the apex where the curved resilient members 170, 172 are of arcuate configuration.

When the level 166 reaches the region 190, the corresponding threshold is reached. Thus, the area 190 defines a threshold for level detection by the measurement device 164.

The regions 190 are located at the same height on the vertical axis 40, in particular for the first bending spring element 170 and the second bending spring element 172. (due to the oblique cross-section in fig. 13, the areas 190 of the curved resilient members 170, 172 exhibit a misalignment there.)

The first and second fixed positions 178, 180 are spaced apart from each other by a spacing 194 in a direction 192. The direction 192 is transverse to the transverse direction 174 and to the vertical axis 40.

In one embodiment, direction 192 is the longitudinal direction of aspirator 20. In particular, in one embodiment, aspirator 20 has a greater dimension in direction 192 than in lateral direction 174.

The distance 194 is in particular at least 2cm, preferably at least 4cm, preferably at least 6cm, preferably at least 8cm and particularly preferably at least 10 cm.

Preferably, the spacing 194 is at least 12cm or at least 14cm or at least 16 cm.

In principle, the spacing 194 can be selected to such an extent that the suspended curved spring elements 170, 172 can still project into the interior 28 of the aspirate container 22.

Fig. 1 and 15 show a variant 196 in which the bending spring element has a greater length, i.e. the distance 194 is greater than in the embodiment according to fig. 13.

The first bending spring element 170 and the second bending spring element 172 each have parallel, spaced-apart, opposite envelope planes 198a, 198 b. The line elements 176 are located between these envelope planes 198a, 198 b.

The first bending elastic element 170 and the second bending elastic element 172 are designed to be inflexible such that they have a stable posture, i.e., a starting posture, without the influence of force. They are arranged and configured in such a way that they can be moved in such a way that a deflection out of the starting position can be achieved. This is indicated in fig. 14. There, a starting position 200 is shown for the first bending spring element 170 and 172, respectively. The yaw with respect to the starting pose 200 is indicated by double arrow 202.

The bending spring elements 170, 172 are arranged and configured in such a way that they return themselves into their starting position 200 when deflected out of the starting position 200 and when the corresponding deflection force is removed. In particular, the bending spring elements are arranged and constructed elastically such that they spring back into their starting position.

Thereby reducing the risk of damage to the probe device 168. Furthermore, an "automatic" cleaning of the curved spring elements 170, 172 can be achieved by springing back.

When the liquid level 166 has reached the region 190, the curved elastic elements 170, 172 are substantially loaded with the soiled liquid. In this case, dirt can be deposited on the flexural elastic elements 170, 172.

When the buckled elastic elements 170, 172 move out of the starting position 200 and spring back via the elastic configuration after the deflection force is withdrawn, the scale can be loosened from the buckled elastic elements 170, 172 (from the thread element 176).

In one embodiment, the bending spring elements 170, 172 are inclined in the starting position 200 at an acute angle 204 (see fig. 13) relative to the vertical axis 40, wherein the distance 206 between the first and second bending spring elements 172 decreases towards the region 190.

In the arrangement shown in fig. 14, spacing 206 decreases in the direction of bottom 24 of aspirate container 22.

The acute angle 204 is here in particular associated with the envelope planes 198a, 198 b.

Thereby, an introduction aid is achieved when suction head 36 with probe device 168 is placed on aspirate container 22.

In particular, it is thereby possible to position the first bending spring element 170 and the second bending spring element 172 on the suction head 36 at a relatively large distance in the transverse direction 174, and in particular on the edge side.

It is advantageously provided that the first bending spring element 170 and the second bending spring element 172 are arranged at the same distance in the direction 192. The same spacing in the direction 192 is not absolutely necessary for the function.

The suction head 36 has on its underside (which faces the bottom 24 of the suction container 22 when the suction head 36 is placed on the suction container 22) a placement surface 208 (see fig. 1) with a corresponding placement plane. When the suction head 36 is removed from the aspirate container 22, it can be placed on the floor via the placement surface 208.

It is provided that the first bending spring element 170 and the second bending spring element 172 lie on or project beyond a respective lying plane for the lying surface 208 in their starting position 200. (in principle, they can also be retracted relative to the lying plane.) in particular when the curved elastic elements 170, 172 project beyond the lying plane in their starting position 200, they become curved when the suction head 36 is correspondingly placed on the ground. When suction heads 26 are then raised, they snap back into their starting position 200. The described cleaning effect thus occurs.

By arranging the bending spring elements 170, 172 at an acute angle 204 to the vertical axis 40, in particular an inward bending occurs here, that is to say the bending spring elements 170, 172 bend toward one another.

In a variant of the embodiment, which is designated by reference numeral 210 in fig. 15, the respective curved elastic element is fixed to the suction head 22 such that the respective fixing locations 212, 214 are not located at the same height relative to the vertical axis 40. For example, the first securing location 212 is located in an area of the underside of the suction head 36, while the second securing location 214 is located on the nipple 48.

In an embodiment variant (fig. 17), the flexural elastic element 170 is fixed to a bracket 216 of the suction head 36, wherein receiving portions 218 associated with the first fixing location 178 and the second fixing location 180, respectively, are arranged on the bracket, the receiving portions 218 having a first portion 220 in which a screw is positioned. The receiving portion has a second portion through which the bending elastic member 170 passes.

The bending spring element can be fixed in the second part 222 via a screw in the first part 220 and in this case in particular clamped.

The receiving portion 218 has an 8-letter shape in its opening.

The suction unit 20 has a control device 224 (fig. 18), which is arranged in particular in the suction head 36. The blower motor 62 is driven via a control device. The control device 224 is connected to one or more switches.

The control device 224 controls the optical and/or acoustic display 226.

The measurement device 164 includes an evaluation circuit 228. The evaluation circuit is implemented, for example, as an ASIC.

For the measuring operation of the measuring device 164, a voltage Vcc probe enable is applied as a loading signal between the first bending spring element 170 and the second bending spring element 172 via the evaluation circuit 228. The reduced voltage input voltage is measured as a response signal.

Between the first bending spring element 170 and the second bending spring element 172, there is a resistance R _ probe due to the medium between them. When there is no liquid between the first bending spring element 170 and the second bending spring element 172, then ideally the resistance can be considered infinite.

When a liquid is present between the first bending spring element 170 and the second bending spring element 172, a current, in particular a short-circuit current, flows. Thereby, the resistance becomes finite and the voltage input voltage varies. This change is a measure of the level 166 having reached the region 190. The threshold value can thus be detected accordingly and the liquid level 166 can be determined at least "digitally".

Corresponding measurement signals are provided by the evaluation circuit 228 and the control device 224. In one embodiment, the control 224 then switches off the suction operation by loading the blower motor 62 accordingly.

Alarm information can be given. It is also possible, for example, for the aspirator 20 not to be restarted for the suction operation when the respective threshold value is detected.

In particular, the signal Vcc probe _ enable, which is a loading signal, is transmitted in a pulsed manner over time so that measurements do not occur continuously. The signal input voltage is the corresponding response signal and contains at least the liquid level 166 in digital form, i.e. whether a threshold value has been reached or not.

According to the present invention, a flexible probe device 168 is provided. The risk of breakage is greatly reduced by bending the resilient elements 170, 172. Due to the wire elements 176, the probe device 168 occupies relatively little space requirement in the aspirate container 22. The flexible construction facilitates self-cleaning of the curved resilient elements 170, 172. The scale can then be easily broken.

The self-cleaning effect can be automatically performed even when the suction head 36 is placed on the placing surface 208.

The first bending spring elements 170, 172 are each made of an electrical conductor. They have a certain inherent stiffness in the form of strings, wherein they can also be designed to be flexible. They are made, for example, of a wire material or of a wire or fiber material with fibers that can conduct electricity (e.g., carbon fibers).

In one embodiment, curved resilient members 170, 172 are disposed centrally on aspirator 20 with respect to direction 192. In particular, they are arranged spaced apart from one another in the transverse direction 174. It can thus be determined in a simple and reliable manner whether the threshold value for the liquid level is reached.

By means of the bending elastic construction of the bending elastic elements 170, 172, a spring back from the starting position 200 is enabled to achieve a self-cleaning effect.

Air is allowed to flow through the curved resilient members 170, 172 due to the suspension at the spaced apart fixed locations 178, 180. The suction airflow is not obstructed.

Probe device 168 can be arranged such that, due to acute angle 204, an introduction aid for placing suction head 36 on aspirate container 22 is achieved.

List of reference numerals

20 suction device

22 aspirate container

24 bottom

26 wall of container

28 inner space

30-wheel device

32 wheel axis

34 roller

36 suction head

38 fixing device

40 vertical axis

42 floor

44 suction interface

46 pipe element

48 connecting sleeve

50 suction unit device

52 Filter device

54 clean side

Side of zang-fu organ 56

58 purification device

60 blower

62 blower motor

64 impeller

66 motor axis

68 acute angle

70 guide device for process air

72 blower bracket

74 casing

76 receiving part

78 channel

80 channel member

82 channel

84 cover

86 track area

88 wall of the container

90 wall of a vessel

92 diameter

94 output terminal

96 first opening

98 axial direction

100 second opening

102 first part area

104 second partial region

106 third part area

108 first side

110 second side

112 first region

114 second region

116 bracketing surface

118 first bracketing surface

120 second bearing surface

122 shoulder

124 (mating) shoulder

126 first tab

128 groove

129 medial side

130 receiving part

132 wall region

134 wall region

136 opening

138 shaft

140 fan wheel

142 channels

144 area of the housing

146 output terminal

148 tube

150 outlet port

152 second tab

154 first receiving part

156 tongue

158 opening

160 mating element

162 holding part

164 measuring device

166 liquid level

168 probe device

170 first bending spring element

172 second bending spring element

174 transverse direction

176 line element

178 first fixing position

180 second fixing position

182 bracket

184 first end part

186 second end portion

188 pin element

190 area

192 direction

194 space

196 variants

198a envelope plane

198b envelope plane

200 initial attitude

202 double arrow

204 acute angle

206 pitch

208 placing surface

210 variants

212 first fixed position

214 second fixed position

216 support

218 receiving part

220 first part

222 second part

224 control device

226 display

228 evaluation circuit