EP2919633B1 - Suction device - Google Patents

Description

The invention relates to a suction device, comprising a suction unit, a housing in which the suction unit is arranged, a liquid filter unit, which is detachably positioned on the housing at a holding area, wherein the liquid filter unit has a suction inlet and a suction outlet.

A liquid filter unit filters contaminated suction air by passing it through a liquid bath with an integrated separator. At the separator solid particles are deposited. In the following, the term "liquid filter unit" will be understood as meaning any filter unit based on the said principle, irrespective of whether the liquid used is water, water with additives or another liquid.

From the US 2008/0216278 A1 , which corresponds to the preamble of independent claim 1, a vacuum cleaner is known which comprises a housing and a tank, which is removably mounted on the housing and having an inlet. Furthermore, a hose interface is provided, via which a suction hose is pivotally connected to the housing with a selective fluid communication with the inlet. A suction source is provided in fluid communication with the tank to draw fluid through the hose interface and the tank when the hose interface is in communication with the inlet.

From the EP 1 182 958 B2 is a vacuum cleaner with a housing, a suction unit arranged therein and a known entering into the housing and a dirt collecting container and a separator connected to the suction side of the suction unit suction line known, wherein the closed dirt collecting container is inserted into the housing and in the inserted position on a suction port sealed with the suction line and sealed via a suction with the suction side of the suction unit is in communication, wherein the dirt collecting container is partially filled with a liquid into which a from the suction opening into the liquid-reaching inlet line opens, and wherein above the liquid filling baffles are arranged, which form for the guided through the liquid suction flow between the liquid surface and the suction a multiply deflected flow path. The Eimündungsstelle the feed line into the liquid is covered by a hood through which passes through the feed line, which is immersed on one side into the liquid and the opposite end is located outside of the liquid. The hood extends to its in the liquid submerged side down to the bottom of the dirt collector, so that in this area the entering into the liquid suction stream can not pass.

From the DE 10 2004 030 350 A1 is a vacuum cleaner with a dirt collecting container, which has a suction opening and which is in flow connection with a suction unit and defines a fillable with liquid filling, known, wherein suction air from the suction port via an inlet line to the filling space can be fed and wherein the filling space downstream of a liquid separator is Separation of liquid from the suction air. The liquid separator comprises a cyclone with at least one inlet, one outlet and at least one discharge element, wherein the suction air can be supplied to the cyclone via the at least one inlet and can be dispensed via the outlet and wherein liquid deposited within the cyclone flows into the filling space via the at least one discharge element is traceable.

The invention has for its object to provide a suction device of the type mentioned, which has an optimized flow guidance with ease of use.

This object is achieved according to the invention in the suction device mentioned above in that an openable and closable lid is provided, which is arranged at least in a closed position on the housing, wherein with the lid open the liquid filter unit is positioned between the lid and the holding portion and that Channel means is provided which is arranged on the lid and having an inlet and an outlet, wherein with the lid closed, the inlet of the channel means is in fluid communication with the suction outlet of the liquid filter unit and the outlet of the channel means is in fluidly effective connection with the suction unit.

The channel device provides the flow path between the liquid filter unit and the suction unit. This channel device is arranged on the lid. This makes it easy to use a completely removable liquid filter unit. By closing the lid, a fluid-tight connection of the channel device to the liquid filter unit and the suction unit can be achieved automatically.

The channel device provides for the forwarding of a filtered air flow. It can be optimized with regard to the flow guidance. The lid, which in particular exerts an axial clamping force on the liquid filter unit for fixing it to the housing, can be optimized separately from the flow guidance when the channel device is used.

It is advantageous if the cover is pivotally mounted on the housing. He is thereby held captive on the housing. It can be pivoted so that in particular the liquid filter unit can be removed as a whole.

It is particularly advantageous if the cover for the transfer from the closed position to the open position in a direction away from the suction unit is pivotable. This can provide a large space area over which the liquid filter unit can be removed. In particular, the liquid filter unit as a whole can then be lifted upwards.

Conveniently, in the open position of the lid, the liquid filter unit is freely removable from the holding area upwards. This results in an easy operability for a user.

In one embodiment, the housing has a first wall, which is spaced from a second wall, the second wall defining a receiving space for the suction unit and the holding area between the first wall and the second wall is arranged, wherein at the the first wall is arranged a pivot joint, via which the lid is pivotally supported, wherein in particular a pivot axis of the pivot joint is at least approximately parallel to the second wall. The housing of the suction device can thereby be divided into a first region, which receives the liquid filter unit, and a second region, in which the suction unit is fixedly arranged. These two areas are separated by the second wall. The first wall and the second wall optionally form, with further elements, a receiving space for the liquid filter unit. In particular, it can be held in a form-locking manner laterally. (An axial fixation can then be done via the lid.) The first wall then continues to serve for a pivotable mounting of the lid. It can thereby realize a compact housing. The pivot axis of the pivot joint is in particular at least approximately aligned horizontally when the suction device is placed with its housing on a horizontal surface.

It is advantageous if a fixing device is arranged on the second wall or on an element connected to the second wall, by means of which the cover can be detachably fixed to the housing in the region of the second wall. This makes it easy to reach an opening of the lid by pivoting away from the second wall. By fixing to the second wall directly or with a part connected to the second wall part, the lid can be fixed in a closed position. As a result, in particular the liquid filter unit can be axially clamped. Furthermore, a handle can then be arranged on the cover and, with the cover fixed, the suction device as a whole can be grasped and transported via the handle on the cover from an upper side.

In one embodiment, a receptacle for a dry filter device is arranged on the liquid filter unit in the region of the suction outlet. The dry filter device has a dry filter (that is, no liquid separator is provided). The dry filter device is a suction device upstream of the filter device, which serves to protect them.

The receptacle for the liquid filter unit can be easily integrated in a corresponding liquid container of the liquid filter unit.

It is advantageous if at least one hold-down element for the dry filter device is arranged on the lid. The dry filter unit can thereby be inserted loosely into the receptacle of the liquid filter unit. The one or more hold-down elements on the lid when the lid is closed for a fixation of the dry filter device in the receptacle at least in the axial direction.

In one embodiment, the at least one hold-down element is arranged on the channel device and in particular arranged and / or formed at the inlet of the channel device. As a result, the at least one hold-down element can be easily integrated in the cover.

It is advantageous if one or more handles are arranged on the cover on one side opposite the channel device. The lid forms a partial top of the suction device. By one or more arranged on the lid handles then the suction device can be taken as a whole from above and transport.

Conveniently, the channel means comprises a first seal which is arranged at the inlet and serves for a fluid-effective sealing at the suction outlet of the liquid filter unit with the lid closed. The first seal at the inlet of the channel means provides an airtight seal when the lid is closed and the inlet of the channel means abuts the suction outlet of the liquid filter unit.

For the same reason, it is favorable if the channel device comprises a second seal, which is arranged at the outlet and serves for fluid-effective sealing at a connection for the suction unit. It is characterized by an airtight seal for the suction air flow between the Outlet of the channel device and the corresponding connection of the suction unit reached.

In one embodiment, the first seal and / or the second seal are formed by a sealing lip, which in particular forms a closed curve, wherein in particular the sealing lip is injection-molded. It can thereby also be achieved in a simple manner that when the liquid filter unit is positioned at the holding area and the lid is closed, a seal between the channel device and the suction outlet of the liquid filter unit and the connection of the suction unit is automatically achieved by means of corresponding sealing systems.

It is favorable if the cover has an area which is oriented at least approximately with respect to an envelope at least approximately parallel to a bottom of the housing, and the channel device is arranged on this area. At such a range then advantageously a handle is arranged.

It is particularly advantageous if the lid is designed as a clamping bracket through which the liquid filter unit is clamped to the housing when the lid is closed. The lid can then be used to axially clamp the liquid filter unit with the housing and thereby fix. In addition, such an axial clamping can easily achieve an airtight seal between the channel device and the liquid filter unit or a connection of the suction unit.

Conveniently, when the lid is closed, at least one viewing window lies between the housing and the lid on the liquid filter unit. Thereby, a liquid filter unit, if this is made of a transparent material, observe this and recognize, for example, when cleaning is necessary. The at least one A viewing window is in particular a material-free area, that is to say an "open" window.

The above object is alternatively or additionally achieved according to the invention in that the liquid filter unit has a liquid container in which a snorkel is arranged, which is connected to the suction inlet, and in that a sealing device is provided which provides a fluid-effective seal between the suction inlet and a container interior provides at the snorkel and which has a receiving area for a suction hose and provides an airtight seal at the suction inlet when the suction hose is received.

Suction air (which is contaminated) is coupled into the liquid bath via the snorkel in the liquid container in order to carry out a corresponding separation process there.

In the solution according to the invention a sealing device is provided, which ensures both an air-tight seal when coupling the Saugluftstroms (when connecting a suction hose), as well as a liquid seal on the liquid filter unit with respect to the snorkel, so that the dirt-laden suction air stream at a defined position of the Snorkel and in particular at an orifice at or near one end of the snorkel enters the liquid bath.

With a single sealing device can thus achieve a double sealing effect. This minimizes the number of components.

Furthermore, the sealing device can also be formed in a simple manner as a baffle plate seal in order to achieve an effective sealing effect.

In one embodiment, the sealing device comprises a one-piece sealing body or comprises a sealing body with molded sealing lip. As a result, fixing in particular of the liquid filter unit can be achieved in a simple manner with a high sealing effect.

In particular, a sealing body of the sealing device is made of an elastic material. The elastic material is a rubber material or rubbery material. As a result, for example, a suction hose can be plugged in easily and an air-tight seal can be achieved.

It is particularly advantageous if the sealing device is arranged on the liquid container and is fixedly arranged. This makes it easy to achieve a fluid seal with respect to the snorkel and achieve an air seal for a suction hose.

In one embodiment, the sealing device has a first region which is arranged on an outer side of the liquid container and has a second region, which is arranged on an inner side of the liquid container and is connected to the snorkel. The different areas are designed so that an airtight seal for a suction hose is achieved and a liquid-tight seal for the snorkel is achieved. The first area is particularly intended to allow a suction hose to be inserted, thereby achieving an airtight seal.

It may be provided that the first region has a support surface for a connection of a cover of the housing. If then, for example, the housing is closed, the nozzle acts on this support surface and it is achieved by a seal. The nozzle, for example, have a support function for the suction hose. In particular, the nozzle has a higher mechanical strength (lower elasticity) than the sealing device in order to have the support function for the suction hose.

It may be provided that the first region has at least one recess for deformability, wherein in particular the at least one recess is radially oriented and in particular a plurality of spaced (in particular in the circumferential direction) recesses is provided. For example, if the first region has a ring shape, then a suction hose can be inserted and the recesses just allow such elastic deformation that a seal is achieved.

It is advantageous if the first region has a first envelope at one end and the second region has a second envelope at one end, the first envelope and the second envelope lying at an acute angle to one another, the acute angle in particular in the region between 10 ° and 20 ° and for example at about 15 °. It can thereby be provided with a corresponding arrangement of the sealing means a baffle plate in order to achieve a high sealing effect.

In particular, the sealing device is designed as a baffle plate seal in order to achieve effective Saugstromlenkung with high sealing effect.

Figur 1

eine perspektivische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Saugvorrichtung;

Figur 2

eine Schnittansicht längs der Linie 2-2 gemäß Figur 1;

Figur 3

eine andere perspektivische Darstellung der Saugvorrichtung gemäß Figur 1 mit geöffnetem Deckel, wobei eine Flüssigkeitsfiltereinheit sichtbar ist;

Figur 4

ein Gehäuse der Saugvorrichtung gemäß Figur 1 bei entferntem Deckel und bei entfernter Flüssigkeitsfiltereinheit;

Figur 5

eine perspektivische Darstellung der Flüssigkeitsfiltereinheit der Saugvorrichtung gemäß Figur 1;

Figur 6

eine andere perspektivische Darstellung der Flüssigkeitsfiltereinheit gemäß Figur 5;

Figur 7

eine Vorderansicht der Flüssigkeitsfiltereinheit gemäß Figur 5;

Figur 8

eine Schnittansicht der Flüssigkeitsfiltereinheit gemäß Figur 7 längs der Linie 8-8;

Figur 9

eine Schnittansicht der Flüssigkeitsfiltereinheit längs der Linie 9-9 gemäß Figur 8;

Figur 10

eine Seitenansicht einer Dichtungseinrichtung, welche im Bereich A der Flüssigkeitsfiltereinheit gemäß Figur 5 angeordnet ist;

Figur 11

eine Draufsicht auf die Dichtungseinrichtung gemäß Figur 10;

Figur 12

eine Schnittansicht längs der Linie 12-12 der Dichtungseinrichtung gemäß Figur 11; und

Figur 13

eine Draufsicht auf die Dichtungseinrichtung gemäß Figur 10 in der Richtung B.

The following description of preferred embodiments is used in conjunction with the drawings for further explanation of the invention. Show it:

FIG. 1

a perspective view of an embodiment of a suction device according to the invention;

FIG. 2

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

FIG. 3

another perspective view of the suction device according to FIG. 1 with the lid open, with a liquid filter unit visible;

FIG. 4

a housing of the suction device according to FIG. 1 with the lid removed and with the liquid filter unit removed;

FIG. 5

a perspective view of the liquid filter unit of the suction device according to FIG. 1 ;

FIG. 6

another perspective view of the liquid filter unit according to FIG. 5 ;

FIG. 7

a front view of the liquid filter unit according to FIG. 5 ;

FIG. 8

a sectional view of the liquid filter unit according to FIG. 7 along the line 8-8;

FIG. 9

a sectional view of the liquid filter unit along the line 9-9 according to FIG. 8 ;

FIG. 10

a side view of a sealing device, which in the region A of the liquid filter unit according to FIG. 5 is arranged;

FIG. 11

a plan view of the sealing device according to FIG. 10 ;

FIG. 12

a sectional view taken along the line 12-12 of the sealing device according to FIG. 11 ; and

FIG. 13

a plan view of the sealing device according to FIG. 10 in direction B.

An embodiment of a suction device according to the invention, which in the FIGS. 1 to 4 shown and designated 10, is a vacuum cleaner. This vacuum cleaner is formed in the embodiment shown as a mobile, portable device.

The suction device 10 has a housing 12. The housing 12 has a first region 14 and a second region 16. The first region 14 and the second region 16 are arranged next to one another. The housing 12 in this case comprises a bottom 18. The first region 14 and the second region 16 are formed on the bottom 18. At the bottom 18, a first wall 20 is arranged. Spaced to the first wall 20 is above the bottom 18, a second wall 22. The first portion 14 of the housing 12 is formed between the first wall 20 and the second wall 22. The first region 14 in this case comprises a holding region 24 for releasably holding a liquid filter unit 26.

In the following, the term liquid filter unit is used. Often, water is used to filter suction air. But it can also be used as a liquid other than water or it can be used with added water as a filter liquid.

The second wall 22 delimits a closed receiving space 28 in the second area 16 of the housing 12. A suction unit 30 is arranged in this receiving space 28. This suction unit 30 generates the vacuum necessary for a suction flow. For this purpose, a naturally aspirated engine and a suction turbine is available.

The receiving space 28 is closed down through the bottom 18. A third wall 32 is provided, which is connected to the second wall 22, which surrounds the receiving space 28. At the top, the receiving space 28 is closed by a fixed lid 34.

On the cover 34, a terminal 36 is arranged. This connection is in fluid-effective connection with the suction unit 30. It can be used to generate or suck in a suction air stream, as explained in more detail below.

The housing 12 has a cover 38 for the first region 24. This cover serves to (partially) close the first region 14 with the liquid filter unit 26 and to fix the liquid filter unit 26 and in particular to clamp the liquid filter unit 26 to the holding region 24.

The first wall 20 has a lower height above the bottom 18 than the second wall 22. The cover 38 is articulated via a pivot joint 40 on the first wall 20. A pivot axis 42 ( FIG. 3 ) is aligned at least approximately parallel to the bottom 18 and / or the second wall 22.

On the second region 16 of the housing 12 and in particular on the second wall 22 or on a region connected to the second wall 22, a fixing device 44 is arranged, via which the lid 38 can be fixed to the housing 12 with the second region 16. For this purpose, the cover 38 has a fixing part 46 which corresponds to the fixing device 44. For example, a spring-loaded releasable latching connection for fixing the lid 38 with its fixing part 46 is provided on the fixing device 44.

The fixing part 46 on the cover 38 is arranged at or in the vicinity of an end 48 of the lid 38, which is opposite to an end 50 of the lid 38, on which or in the vicinity of the pivot joint 40 is arranged.

The lid 38 is formed so that it does not completely surround the first region 14 of the housing 12. Between the cover 38 and the bottom 18 or a bottom wall 18 connected to the side wall 52 is closed with the lid 38 (FIG. FIG. 1 ) a viewing window 54 is formed. The viewing window is present in particular on the left side and the right side of the suction device 10. In FIG. 1 is the viewing window 54 on one right side, when looking at the suction device 10 from the front in the direction of the first region 14 to the second region 16.

Through the viewing window 54, a user can see and test the liquid filter unit 26.

The suction device 10 can be set over the floor 18 on a base. For this purpose, 18 corresponding Aufstellelemente 56 are arranged on an outer side of the bottom.

The third wall 32 has a rear side 58. This back 58 forms one end of the suction device 10, which faces away from the end on which the first wall 20 is seated. The back 58 is at least partially flat. The suction device 10 can also be set up on a support via its rear side 58. As a result, for example, the suction device 10 can be stowed with smaller lateral dimensions.

The holding region 24 is formed on the bottom 18 and bounded by the opposite first wall 20 and the second wall 22 and the corresponding side walls 52. A receiving trough 60 for the liquid filter unit 26 is formed on the holding region 24.

The receptacle 60 is laterally surrounding and closed down. It is provided with positioning ribs 62 for the liquid filter unit 26. When the liquid filter unit 26 is inserted into the receptacle 60 with the dimension in the liquid filter unit 26 fitted to the receptacle 60 with the positioning ribs 26, the liquid filter unit 26 is laterally positively held. When the cover 38 is closed, the lid 38, which is designed accordingly, ensures an axial fixation of the liquid filter unit 26 to the housing 12.

The liquid filter unit 26 has a liquid container 64. This liquid container is at least partially in an area which at positioned liquid filter unit 26 is located on the viewing window 54, made of a transparent material and in particular plastic material. As a result, a user can observe an interior of the liquid container 64 from outside through the viewing window 54, which is in particular an open window.

In one embodiment, a handle 66 is disposed on the liquid container 64. The handle 66 includes a bracket 68 which is connected to lateral webs 69. There are opposite webs 68 are provided, which are each pivotally hinged to one side 70 of the liquid container 64 pivotally. The handle 66 is dimensioned such that in a "parking position" of the handle 66, which in FIG. 5 is shown, this does not protrude above a top 72 of the liquid container 64. In this parking position then the handle 66 also does not hinder the closing of the lid 38 when the liquid filter unit 26 is seated on the holding region 24.

The handle 66 is pivotable in such a position that the liquid filter unit 26 can be taken from above and can be removed from the first portion 14 of the housing 12 upwards when the lid 38 is opened accordingly.

In FIG. 3 a corresponding example is shown with the lid 38 open, wherein the handle 66 is in the park position. If the handle 66 is brought by pivoting away from the second wall 22 in a gripping position, then a user from above can grasp the handle 66 and then pull upwards, away from the bottom 18, the liquid container 64 of the liquid filter unit 26.

For pivotable articulation of the handle 66 on an outer side of the liquid container 64, for example, the liquid container 64 on opposite sides 70 recesses into which corresponding shaft journals which sit on the brackets 68, engage.

In one embodiment, the liquid container 64 has a base 74 and a top 76 which are releasably secured together. The upper part 76 is placed on the lower part 74 and can be removed after solving the fixation. As a result, an interior of the liquid container 64 is accessible. The liquid filter unit 26 has a suction inlet 78 on the liquid container 64. This suction inlet is used for coupling in particular a suction hose. A "dirty" suction air stream is coupled via the suction inlet 78 into the liquid filter unit 26.

The upper part 76 of the liquid container 64 has an outer shape which is adapted to the corresponding shape of the receiving space on the first region 14 of the housing 12. The upper part 76. The lower part 74 is adapted in its outer dimensions at least approximately cuboidal to the receiving trough 60 of the first region 14 with the holding portion 24th

The upper part 76 is formed in its outer dimensions (in a partial area) at least approximately so that it is trapezoidal in cross section. In this case, a rear side 80 is provided which is, for example, an aligned continuation of a rear side 82 of the lower part 74. Furthermore, an upper side 84 is provided, which is in particular at least approximately parallel to a lower side 86 of the lower part 74.

The lower part 74 has a front side 86, which is spaced from the rear side 82 and at least approximately parallel thereto. The upper part 76 further has a front side 88, which is connectable to the front side 86 of the lower part 74. Between this front side 86 and the upper side 84 of the upper part 76 lies a sloping side 90 which lies at a first acute angle to the front side 88 and lies at a second acute angle to the upper side 84. The first acute angle is for example in the range between 35 ° and 55 °. Accordingly, then the second acute angle is in the range between 55 ° and 35 °.

On the inclined side 90 of the suction inlet 78 is arranged.

A snorkel 94 is seated in an interior 92 of the liquid container 64. The snorkel 94 has a first region 96 and a second region 98. The first area is connected to the suction inlet 78. The second area 98 is connected to the first area 96. The first region 96 and the second region 98 are formed by tubular elements.

The tubular element of the first region 96 is oriented at least approximately perpendicular to the oblique side 90. The suction inlet 78 is formed on it. It is, as will be explained in more detail below, a sealing device 100 is provided. The tubular element of the second region 98 is at least approximately parallel to the front face 88 and spaced therefrom. The tubular element of the second region 98 leads in the direction of a bottom of the liquid container 64. It has an outlet 102, which is formed for example by a vierilkreisförmigen cutout. This outlet 102 faces the front face 88 with an outlet port.

Via a fastening element 104, the snorkel 94 is fixed in the interior 92 of the liquid container 64.

The liquid container 64 of the liquid filter unit 26 has a suction outlet 106. On the upper side 84 of the upper part 76, a recess 108 is formed. The recess 108 is, for example, (hollow) cuboid. The recess 108 receives a dry filter device 110 (FIG. FIG. 3 ) on. The recess 108 has an inlet 112 for suction air.

Between the outlet 102 of the snorkel 94 and the inlet 112 or a unit upstream of the inlet 112, a flow guide 114 is formed. In this flow guide, for example, water is arranged, wherein a suction air flow has to flow through this water. The flow guide 114 is designed so that a dirt separation takes place, wherein deposited solid particles remain in the liquid container 64 and settles in particular at its bottom. Suction air, which flows through the liquid filter unit 26, must flow through the liquid in the liquid filter unit 26 and there is a solids deposition. The liquid in the liquid filter unit 26 then has a filtering action through the corresponding deposition. Suction air which flows into the dry filter device 110 via the inlet 112 is then cleaned to a high degree. The additional dry filter device 110 serves to protect the suction unit 30 from any liquid and / or dust loading of sucked suction air. In particular, the suction port 106 of the liquid filter unit 26 is a corresponding outlet of the dry filter device 110. Under normal operation, the suction air present at the suction outlet 106 is cleaned of solid particles and is dry.

On the cover 38, a channel device 118 is disposed on an inner side 116. When the lid 38 is closed, while the inner side 116 to the bottom 18 to. The conduit means 80 provides the suction air flow effective connection between the liquid filtration unit 26 (its suction outlet 106) and the suction unit 30 (via its port 36). The channel device 118 carries the corresponding suction air flow.

The channel device 118 has an inlet 120 for this purpose. This inlet 120 is adapted in shape to the dry filter device 110. For example, an orifice 122 of the inlet 120 has a rectangular cross-section.

An orifice wall 124, which is circumferential, is provided with a first seal 126. The first seal 126 in particular comprises a circumferential sealing lip. This circumferential sealing lip is injection-molded, for example, on the outlet wall 124.

When the lid is closed, the first seal 126 seats against a corresponding suction air impermeable part of the dry filter device 110 and provides a fluid tight seal.

At the channel device 118, one or more hold-down elements 128 are arranged. These sit in particular at the inlet 120 of the channel device. When the lid 38 is closed, the hold down member (s) 128 press on the dry filter means 110 and fix it axially thereto.

The channel device 18 also has an outlet 130. This outlet 130 is adapted with its mouth shape to the terminal 36 of the suction unit 30. When the lid 38 is closed, the outlet 130 is positioned at the port 36.

At a mouth wall 132 of the outlet 130 sits a second seal 134. This includes in particular a circumferential sealing lip. This circumferential sealing lip is molded, for example, on the mouth wall 132.

When the lid 38 is closed, the second seal 134 rests on a corresponding wall of the port 36 and a fluid-tight seal is achieved.

Between the inlet 120 and the outlet 130 sits a fluid-tight channel element 136, which is formed, for example, by a pipe section which is rectangular in cross-section.

A suction air stream may flow from the inlet 120 via the channel member 136 to the outlet 130.

The channel device 118 provides the flow path between the liquid filter unit 26 and the suction unit 30. The channel device 118 is a member which is fixed to the inside 116 of the lid 38. It is thereby making it possible to optimize the lid 38 in its shape separated from a guide for the suction air.

The lid 38 has adapted to the liquid filter unit 26 with its sloping side 90 a sloping side 138. When the lid 38 is closed, the sloping side 138 is directly opposite the inclined side 90 of the liquid filter unit 26 and, for example, at least approximately parallel thereto.

In the sloping side 138 of the lid 38, an opening 140 is formed. This opening 140 has, for example, a circular cross-section.

On the inside 116 of the lid 38 sits at the opening 140 a nozzle 142. The nozzle 142 is formed for example by a tubular element and in particular cylindrical tubular element.

When the liquid filter unit is positioned and the lid 38 is closed, a suction hose can be connected to the liquid filter unit 26 through the opening 140 and the nozzle 142. The nozzle 142 is designed so that it rests on the sealing device 100 when the lid 38 is closed. As a result, an environmental seal for an inserted suction hose is achieved (if a suction hose adapted in its dimensions is used).

The sealing device 100 serves to fluid seal between the snorkel 94 and the suction inlet 78, so that on the one hand liquid can not escape in this area. On the other hand, the sealing device 100 serves to couple the suction air flow into the snorkel 94 airtight. These two objects are achieved by a single sealing device 100, which is arranged on the liquid filter unit 26 on the liquid container 64 on its oblique side 90.

The sealing device 100 ( FIGS. 10 to 13 ) comprises a sealing body 144. This sealing body 144 is made of an elastic material and in particular rubber-like material or rubber material. The sealing device 100 comprises a first region 146 and a second region 148. The first region 146 is arranged on an outer side of the liquid container 64. The second region 148 is disposed in an inner side of the container. Between the first region 146 and the second region 148 there is a recessed region 150. Over this recessed region 150, the sealing device 100 is arranged on the wall forming the sloping side 90, wherein a corresponding opening 152 in this wall is outwardly through a corresponding abutment surface 154 of the first area 146 is covered. The contact surface 154 is in particular annular. Inwardly, the opening 152 is covered by a contact surface 156, which is also in particular annular. The contact surfaces 154 and 156 are facing each other.

The first region 146 and the second region 148 are integrally formed in one embodiment, that is, a one-piece sealing body is formed. It can also be provided that, for example, the first region 146 forms an integral sealing body 144 on which, for example, also the contact surface 156 is formed, and a sealing lip 158 of the second region 148 is molded onto this sealing body.

The first region 146 has an end 160 with a first envelope 162. The first envelope 162 is in particular a plane.

The second region 148 has an end 164 with a second envelope 166. The second envelope 166 is in particular at least approximately one plane.

The first envelope 162 and the second envelope 166 are at an acute angle 168 to each other. The acute angle is in one embodiment between 10 ° and 20 ° and in particular at about 15 °.

At the end 160, the sealing device 100 has a bearing surface 170 on the first region 146. In particular, when the cover 38 is closed, the socket 142 presses on this bearing surface.

The first region 146 of the sealing device 100 is provided with recesses 172. There are a plurality of radial, slot-shaped recesses 172 are provided, which are spaced in the circumferential direction. These recesses 172 serve to facilitate the deformability of the sealing device 100. In a receiving space 174, which is surrounded by sealing material, and in which a suction hose can be inserted. The rubber material or rubber-like material of the sealing body 144 then ensures a seal between the suction hose and the environment, so that here airtightness is achieved and the only way for the suction flow from the suction hose through the suction inlet 78 into the snorkel 94.

With the second region 148, the sealing device 100 is pushed onto the tube element of the first region 96 of the snorkel 94, that is to say the first region 96 of the snorkel 94 is correspondingly immersed in the second region 148. The second region 148 encloses closed the tubular element of the first region 96 and the snorkel 94th

Alternatively, it is also possible for the second region 148 of the sealing device 100 to be immersed in the tubular element of the first region 96 of the snorkel 94.

Due to the acute angle 168, the sealing device has an expanding height H (cf. FIG. 12 ). The sealing device 100 is arranged on the oblique side 90, that next to the front side 88, the height is the lowest and then widens in a direction to the top 84 in the height.

It is characterized by the sealing device 100, a baffle plate 176 is formed. The sealing device 100 is designed as a baffle plate seal.

The suction device 10 works as follows:

When inserted liquid filter unit 26 in the closed lid 34, the lid 34 acts as a clamping bracket. He presses the liquid filter unit 26 in the holding area 24 and provides for axial fixation. Via the channel device 118, a fluid-effective connection between the suction outlet 106 and the suction unit 30 via the connection 36 is provided. The inlet 120 of the channel device 118 lies in a fluid-tight manner at the suction outlet 106. The outlet 130 of the channel device 118 lies in a fluid-tight manner at the connection 36 for the suction unit 30.

The hold down element or elements 128 press the dry filter device 110 into the recess 108, which forms a receptacle for the dry filter device 110.

The housing 12 with the lid 38 and the liquid filter unit 26 are adapted and dimensioned so that when positioning the liquid filter unit 26, in which closing of the lid 38 is made possible, automatically the fluid-tight connection between the channel device 118 and the suction outlet 106th and the terminal 36 is made.

A suction hose is connected through the opening 140 and thereby immersed in the first region 146 of the sealing device 100. It is achieved by an airtight connection.

In suction mode, suction air, which is loaded with dirt, is sucked into the liquid filter unit 26 via the suction inlet 78. In FIG. 2 a corresponding flow pattern is shown. The suction air flow flows through a water bath, wherein the flow guide is such that a Abscheidefunktion is achieved and solid particles are deposited in the liquid filter unit 26. The suction air flow generated by the suction unit 30 is extracted via the suction outlet 106. The dry filter device 110 serves to protect the suction unit 30.

To remove the liquid filter unit 26, the locking between the fixing part 46 and fixing device 44 is released. The lid 38 is swung forwards ( FIG. 3 ).

The liquid filter unit 26 can thereby be removed upwards. This is done most conveniently by pivoting the handle 86. By touching the handle then the liquid filter unit 26 can be pulled upwards.

The liquid filter unit 26 can be opened by a lock is released and the upper part 76 is removed from the lower part 74. In this case, the liquid container 64 is preferably designed such that when the liquid filter unit 26 is placed on a horizontal base, water is only in the lower part 74. The liquid filter unit 26 can then be cleaned.

The suction device 10 has a handle 178. This is arranged on the lid 38 opposite the channel device 118. In one embodiment, the handle 178 is centered on lateral sides. When the lid 34 is closed and a fixation of the fixing device 44 is achieved, the suction device 10 can be grasped and transported as a whole via the handle 178. When the fixing is released, for example, a pivoting movement of the cover 38 can be actuated via the handle 178.

LIST OF REFERENCE NUMBERS

10

suction device

12

casing

14

First area

16

Second area

18

ground

20

First wall

22

Second wall

24

holding area

26

Liquid filter unit

28

accommodation space

30

suction unit

32

Third wall

34

cover

36

connection

38

cover

40

pivot

42

swivel axis

44

fixing device

46

fixing part

48

The End

50

The End

52

sidewall

54

window

56

positioning element

58

back

60

receptacle

62

positioning rib

64

liquid container

66

handle

68

hanger

69

web

70

page

72

top

74

lower part

76

top

78

suction inlet

80

back

82

back

84

top

86

front

88

front

90

oblique side

92

inner space

94

snorkel

96

First area

98

Second area

100

seal means

102

outlet

104

fastener

106

suction outlet

108

recess

110

Dry filter device

112

inlet

114

flow guidance

116

inside

118

passage means

120

inlet

122

muzzle

124

mouth wall

126

First seal

128

Hold-down element

130

outlet

132

mouth wall

134

Second seal

136

channel element

138

oblique side

140

opening

142

Support

144

seal body

146

First area

148

Second area

150

Reset area

152

opening

154

contact surface

156

contact surface

158

sealing lip

160

The End

162

First envelope

164

The End

166

Second envelope

168

acute angle

170

bearing surface

172

recess

174

accommodation space

176

flapper

178

handle

Claims (15)

1. A suction device, comprising a suction unit (30), a housing (12), in which the suction unit (30) is arranged, and a fluid filter unit (26), detachably positioned on the housing (12) at a holding region (24), wherein the fluid filter unit (26) has a suction inlet (78) and a suction outlet (106), and there is provided an openable and closable cover (38) which at least in a closed position is arranged on the housing (12), wherein the fluid filter unit (26) is positioned between the cover (38) and the holding region (24) when the cover (38) is closed, characterised in that there is provided a channel device (100) which is arranged on the cover (38) and has an inlet (120) and an outlet (130), wherein when the cover is closed, the inlet (120) of the channel device (100) is in a fluid-effective connection with the suction outlet (106) of the fluid filter unit (26) and the outlet (130) of the channel device (100) is in a fluid-effective connection with the suction unit (30).
2. A suction device according to claim 1, characterised in that the cover (38) is pivotably mounted on the housing (12), and in particular in that the cover (38) is pivotable in a direction away from the suction unit (30) for transfer from the closed position into the opened position.
3. A suction device according to any one of the preceding claims, characterised in that in the opened position of the cover (38), the fluid filter unit (26) is freely removable from the holding region (24) in an upwards direction.
4. A suction device according to any one of the preceding claims, characterised in that the housing (12) has a first wall (20) at a distance from a second wall (22), wherein the second wall (22) bounds a receiving chamber (28) for the suction unit (30) and the holding region (24) is arranged between the first wall (20) and the second wall (22), wherein at the first wall (20) there is arranged a pivot joint (40) via which the cover (38) is pivotably held, wherein in particular a pivot axis (40) of the pivot joint (40) is at least approximately parallel to the second wall (22), and in particular in that a fixing device (44) is arranged at the second wall (22) or at an element connected to the second wall (22), the cover (38) being detachably fixable to the housing (12) in the region of the second wall (22) by this fixing device (44).
5. A suction device according to any one of the preceding claims, characterised in that a receiver for a dry-type filter device (110) is arranged in the region of the suction outlet (106) at the fluid filter unit (24), and in particular in that at least one holding-down element (128) for the dry-type filter device (110) is arranged at the cover (38), and in particular in that the at least one holding-down element (128) is arranged at the channel device (100) and in particular is arranged and/or formed at the inlet (120) of the channel device (100).
6. A suction device according to any one of the preceding claims, characterised in that one or a plurality of handles (178) are arranged at the cover (38), at a side opposite the channel device (100).
7. A suction device according to any one of the preceding claims, characterised in that the channel device (100) comprises a first seal (126), which is arranged at the inlet (120) and which serves to seal in a fluid-effective manner at the suction outlet (106) of the fluid filter unit (26) when the cover (38) is closed.
8. A suction device according to any one of the preceding claims, characterised in that the channel device (100) comprises a second seal (134), which is arranged at the outlet (130) and which serves to seal in a fluid-effective manner at a connection (36) for the suction unit (30), and in particular in that the first seal (126) and/or the second seal (134) is/are formed by a sealing lip, which in particular forms a closed curve, wherein in particular the sealing lip is injection moulded on.
9. A suction device according to any one of the preceding claims, characterised in that the cover (38) has a region which, at least with regard to an envelope, is orientated at least approximately parallel to a bottom (18) of the housing (12), and in that the channel device (100) is arranged at this region.
10. A suction device according to any one of the preceding claims, characterised in that the cover (38) is in the form of a clamping clip by which the fluid filter unit (26) is clamped on the housing (12) when the cover (38) is closed.
11. A suction device according to any one of the preceding claims, characterised in that when the cover (38) is closed, at least one viewing window (54) onto the fluid filter unit (26) lies between the housing (12) and the cover (38).
12. A suction device according to any one of the preceding claims, characterised in that the fluid filter unit (26) has a fluid container (64) in which there is arranged an air intake (94) which is connected to the suction inlet (78), and in that there is provided a sealing device (100) which provides a fluid-effective sealing between the suction inlet (78) and a container interior at the air intake (94) and which has a receiving region for a suction hose and provides air-tight sealing at the suction inlet (78) when the suction hose is received, and in particular in that the sealing device (100) comprises a one-piece sealing body (144) or a sealing body with sealing lip moulded on by injection moulding, and in particular in that a sealing body (144) of the sealing device (100) is manufactured from an elastic material, and in particular in that the sealing device (100) is arranged at the fluid container (64).
13. A suction device according to claim 12, characterised in that the sealing device (100) has a first region (146), arranged at an outer surface of the fluid container (64), and has a second region (148), arranged at an inner surface of the fluid container (64) and connected to the air intake (94), and in particular in that the first region (146) has a supporting surface (170) for a connection piece (142) of a cover (38) of the housing (12), and in particular in that the first region (146) has at least one cutout (172) for deformability, wherein in particular the at least one cutout (172) is oriented radially and in particular a plurality of spaced-apart cutouts (172) are provided.
14. A suction device according to claim 13, characterised in that the first region (146) has a first envelope (162) at one end (160) and the second region (148) has a second envelope (166) at one end (164), wherein the first envelope (162) and the second envelope (166) lie at an acute angle (168) to one another, wherein the acute angle (168) lies in particular in the range between 10° and 20°.
15. A suction device according to any one of claims 12 to 14, characterised in that the sealing device (100) is in the form of a baffle plate seal.

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