DE102007026976A1 - Cleaning device for cleaning carpets and upholstery comprises an engine chamber arranged below a cleaning liquid container for holding a suction unit - Google Patents

Abstract

Cleaning device comprises an engine chamber (24) arranged below a cleaning liquid container (30) for holding a suction unit (45). Preferred Features: The engine chamber holds the pump (74). A handle is arranged above the cleaning fluid container. A rotary axis (48) of the suction unit is vertically arranged. A dirty liquid container is arranged in a container holder.

Description

The The invention relates to a cleaning device with a cleaning liquid container and a dirty liquid container and with one with the cleaning liquid container in Flow connection standing pump for spraying a surface to be cleaned and with a suction unit for picking up the sprayed cleaning liquid and transferring into the dirty liquid container.

such Cleaning devices are also called spray extraction devices designated and come, for example, for cleaning carpets and upholstered furniture used. By means of the pump cleaning fluid, For example, water, which is mixed with a soap solution can be sprayed onto a surface to be cleaned be, and by means of the suction unit, the sprayed Cleaning liquid absorbed together with dissolved dirt and transferred to the dirty liquid container become.

From the international publication WO 99/21470 is a cleaning device of the type mentioned above. It has proven itself for cleaning carpets in particular. The operation of the cleaning device, however, is associated with a not inconsiderable noise. In addition, a relatively large storage space is required to store the known cleaning device.

task The present invention is a cleaning device of the type mentioned in such a way that it has a lower Noise and a lower construction volume has.

These Task is in a cleaning device of the generic Art solved according to the invention that below the cleaning fluid container an engine compartment is arranged, which receives the suction unit.

The Provision of an engine compartment below the cleaning fluid container allows the construction volume of the cleaning device considerably reduced, because it is now possible to Cleaning fluid container immediately next to to arrange the dirty liquid container and The suction unit can be below the cleaning fluid container be positioned in the engine compartment.

The Arrangement of the suction unit in the engine compartment below the cleaning liquid container moreover has the advantage that the noise the cleaning device can be significantly reduced, because of the cleaning liquid filled cleaning fluid container causes as well as the side of the suction unit arranged and during operation with dirty liquid filled dirty liquid containers a considerable noise reduction.

The Cleaning device according to the invention records Beyond that by a high tipping security, because the positioning of the suction unit below the cleaning liquid container As a result, the cleaning device a relatively low center of gravity. The danger of the cleaning device tipping over during operation can be reduced. This is especially true in cases where the cleaning device movable designed and dragged by the user behind him can be. Even if the cleaning device against an object, for example a piece of furniture, There is virtually no danger of that happening Cleaning device tips.

From The advantage is that the engine compartment not only the suction unit but In addition, also receives the pump. This facilitates the Assembly of the cleaning device and its maintenance.

at a preferred embodiment is above the cleaning liquid container arranged a carrying handle. The cleaning device is thus portable designed. The arrangement of the handle above the cleaning fluid container and thus also above the suction unit increases the wearing comfort, because usually is the dirty liquid container during transport of the cleaning device from a first cleaning object not filled to a second cleaning object, so that the center of gravity of the cleaning device is essentially located below the carrying handle. This may cause the cleaning device be worn by the user in a simple way.

at a preferred embodiment of the invention is the Rotary axis of the suction unit aligned vertically. This can the cleaning device are made particularly compact, so it's just a relative to its retention requires little storage space. Also, the assembly of the suction unit is particularly easy with vertically oriented axis of rotation.

The dirty liquid container is usually arranged in a container receptacle of the cleaning device, which is connected via a suction line with the suction unit and thus can be subjected to negative pressure. It is advantageous if at least a portion of the suction line is arranged below the cleaning liquid container, because the noise of the cleaning device can be kept very low the. It can be provided in particular that an end piece of the suction line runs along the underside of the suction unit.

Preferably the suction line comprises a first and a second line section, wherein the first conduit section between the container receptacle and the cleaning liquid container and wherein the second line section below the cleaning liquid container is arranged. The first line section is thus of the container receptacle and the cleaning liquid container surrounded, insulate the flow noises that occur during operation, and the second line section extends below the Cleaning fluid container, preferably below the suction unit, so that the noise can be kept very low.

Cheap it is when the first line section is substantially parallel is aligned with the axis of rotation of the suction unit. Especially with vertical alignment of the axis of rotation, this leads to a particularly compact design of the cleaning device.

Of the second line section is in a preferred embodiment aligned substantially radially to the axis of rotation of the suction unit, this especially applies when the axis of rotation is substantially vertical runs.

at a preferred embodiment of the invention runs the second conduit section along an engine compartment below limiting bottom wall. Preferably, an annular, to the bottom wall, the cleaning liquid container facing Collar molded, which in combination with the bottom wall, a motor pan trains with a housing of the cleaning device is detachably connectable. For example, it can be provided that the floor pan can be screwed to the housing. The housing preferably forms the cleaning fluid container and also the container receptacle for the dirty liquid container. Here, a bottom of the cleaning liquid container vertical to the bottom of the container receptacle be arranged offset above, so that the below the cleaning liquid container arranged engine compartment top side from the bottom of the cleaning fluid container and is bounded on the underside of the floor pan.

From It is advantageous if at least one Saugluftauslass in the bottom wall is arranged. The sucked by the suction unit suction can thus in Area of the bottom wall are discharged to the environment. this has a further noise reduction result.

Cheap it is when the at least one Saugluftauslass below the suction unit is arranged. The at least one Saugluftauslass is thus in Distance to the lateral outer areas of the cleaning device arranged.

It has been shown to cause flow noise the escaping suction air can be kept very low.

From It is advantageous if the electric motor of the suction unit by means of a cooling air flow to be cooled can. It is advantageous if the cooling air over at least one, arranged in the bottom wall cooling air outlet can be delivered to the environment. The arrangement of at least a cooling air outlet in the bottom wall reduces the Noise development of the cleaning device.

The Supply of cooling air to the electric motor of the suction unit takes place in a preferred embodiment of the invention over at least one, arranged laterally next to the cleaning liquid container Cooling air inlet, which via a cooling air line connected to the electric motor. The lateral arrangement of the allows at least one cooling air inlet an unimpeded supply of cooling air. Also this reduces the generation of disturbing flow noise.

The Cooling air duct preferably has a first and a second line section, wherein the first line section next to the cleaning fluid container and the second line section below the cleaning liquid container is arranged.

The following description of a preferred embodiment The invention is in connection with the drawing of the closer Explanation. Show it:

1 a side view of a cleaning device according to the invention;

2 : a top view of the cleaning device off 1 ;

3 : a bottom view of the cleaning device off 1 ;

4 a sectional view taken along the line 4-4 in 1 ;

5 a sectional view taken along the line 5-5 in 3 ;

6 a sectional view taken along the line 6-6 in 3 and

7 a sectional view taken along the line 7-7 in 2 ,

In the drawing, schematically, an inventive cleaning device 10 shown with a housing 12 , which forms a frame and is substantially cuboid. It has a front 14 and a back 15 on, over a first long side 16 and a second longitudinal side 17 as well as a graduated underside 18 are integrally connected to each other. The bottom 18 has a front floor section 20 and a rear floor section 21 on that over a step 22 connected to each other. The rear floor section 21 is offset up to the front floor section 20 arranged, and below the rear floor section 21 includes the cleaning device 10 an engine room 24 , the underside of a motor pan 25 is limited, which is a bottom wall 26 and a molded onto this, the rear floor section 21 facing ring collar 27 includes.

In vertical extension of the step 22 shows the case 12 an intermediate wall 29 on, through which the interior of the case 12 in one above the engine compartment 24 arranged cleaning liquid container 30 and one beside the engine compartment 24 and the cleaning fluid container 30 arranged container receptacle 32 is divided.

On the case 12 is a hood 34 mounted above the container receptacle 32 a separation dome 35 forms and above the cleaning liquid container 30 a filling opening 36 and a carrying handle 37 having.

Inside the container receptacle 32 is below the deposition dome 35 a dirty liquid container 40 arranged. This can be done by removing the hood 34 from the case 12 the container receptacle 32 be removed.

In the area of the front 14 is to the case 12 an intake manifold 42 molded to the inside of the hood 34 a suction tube 43 connects, whose free end below the Abscheidedomes 35 is positioned.

In the engine compartment 24 is a suction unit 45 with a suction turbine 46 and an electric motor 47 arranged. The rotation axis 48 the suction unit 45 is vertically aligned, the electric motor 47 above the suction turbine 46 is positioned. The suction turbine 46 is via a suction line 50 with the container receptacle 32 in fluid communication. The suction line 50 comes from one in the partition 29 arranged suction opening 51 and includes a first conduit section 53 and a second line section 54 , The first line section 53 goes out of the suction opening 51 and runs in a vertical direction down to the bottom wall 26 , To the first line section 53 closes radially to the axis of rotation 58 aligned the second line section 24 on, along the bottom wall 26 runs and at the suction inlet 55 the suction turbine 46 ends. The suction air is from the suction turbine 46 sucked in the axial direction and in the radial direction in an annular channel 57 delivered the suction turbine 46 Surrounds circumferential direction. To the ring channel 57 closes in the flow direction an outlet channel 58 on that into a Saugluftauslass 59 opens, which is below the suction unit 45 in the bottom wall 26 is arranged and has a substantially kidney-shaped shape.

For cooling, the electric motor 47 Cooling air to be supplied. These are on the second longitudinal side 17 of the housing 12 several slit-shaped cooling air inlets 61 arranged over a cooling air duct 62 with a fan 62 the suction unit 45 are connected. The fan 63 is at the suction turbine 46 opposite rear side of the electric motor 47 arranged and is rotated by this. The cooling air line 62 has a first line section 65 and a second conduit section 66 on. The first line section 65 runs laterally next to the cleaning fluid container 32 and extends from the cooling air inlets 61 essentially in a vertical direction downwards. The second line section 66 then closes inside the engine compartment 24 to the first line section 65 at. He surrounds the electric motor 47 in the circumferential direction and ends at the suction turbine 46 facing away from the same. Thus, starting from the cooling air inlets 61 Cooling air over the first line section 65 and the second line section 66 to the electric motor 47 be directed. The heated cooling air is from this to interstices 67 . 68 delivered to each of which a Kühlluftauslasskanal 69 respectively. 70 followed. The latter are related to each other with respect to the axis of rotation 48 diametrically opposite and each lead into a cooling air outlet 71 respectively. 72 , The cooling air outlets 71 . 72 are in the bottom wall 26 arranged.

Below the first line section 65 the cooling air line 62 is in the engine compartment 24 a pump 74 arranged, via a supply line 75 with the cleaning fluid container 30 and via a pressure line 76 with one below the intake manifold 42 on the front side 14 of the housing 12 arranged pressure connection 77 is in flow communication.

For switching the suction unit on and off 45 or the pump 74 are at the hood 34 next to the filling opening 36 two switches 78 . 79 arranged.

For moving the cleaning device 10 This includes two front wheels 82 . 83 and two rear wheels 84 . 85 on the case 12 are rotatably mounted.

During operation of the cleaning device 10 is by means of the pump 74 Cleaning fluid from the cleaning fluid reservoir 30 over the supply line 75 and the pressure line 76 the pressure connection 77 fed. To the pressure connection 77 can be connected to a known pressure line, not shown in the drawing, which carries at its free end a spray nozzle, by means of which the pressurized cleaning liquid can be sprayed onto a surface to be cleaned. To pick up the sprayed cleaning liquid together with dissolved dirt can to the intake manifold 42 a suction hose are connected, which carries at its free end a suction nozzle. By means of the suction unit 45 The container receptacle can be subjected to negative pressure, so that the intake manifold 42 a mixture of dirty liquid and air in the container receptacle 32 can be sucked. The sucked dirty liquid bounces on the Abscheidedom 35 and then drip into the waste liquid container 40 , whereas the sucked air is the Abscheidedom 35 flows around and over the suction line 50 in the area of the suction unit 45 is sucked. It can then via the first ring channel 57 , the Saugluftauslasskanal 58 and the Saugluftauslass 59 be delivered to the environment.

The cleaning device 10 is characterized by a very compact design and by a low center of gravity. The low center of gravity and the compact design are due to the arrangement of the suction unit 45 below the cleaning fluid container 30 achieved. This arrangement also has the advantage that the noise of the suction unit 45 from during the operation of the cleaning device 10 in the cleaning fluid container 30 located cleaning liquid and in the dirty liquid container 40 Dirty liquid is very strongly attenuated. The flow noise of the suction air and the cooling air can be kept very low.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• WO 99/21470 [0003]

Claims (14)

Cleaning device comprising a cleaning fluid container and a dirty fluid container and having a pump connected to the cleaning fluid container for spraying a surface to be cleaned and with a suction unit for receiving the sprayed cleaning liquid and transferred to the dirty liquid container, characterized in that below the cleaning liquid container ( 30 ) an engine compartment ( 24 ) is arranged, the suction unit ( 45 ). Cleaning device according to claim 1, characterized in that the engine compartment ( 24 ) the pump ( 74 ). Cleaning device according to claim 1 or 2, characterized in that above the cleaning liquid container ( 30 ) a carrying handle ( 37 ) is arranged. Cleaning device according to claim 1, 2 or 3, characterized in that the axis of rotation ( 48 ) of the suction unit ( 45 ) is vertically aligned. Cleaning appliance according to one of the preceding claims, characterized in that the dirty liquid container ( 40 ) in a container receptacle ( 32 ) is arranged, which via a suction line ( 50 ) with the suction unit ( 45 ), wherein at least a portion ( 54 ) of the suction line ( 50 ) below the cleaning fluid container ( 30 ) is arranged. Cleaning appliance according to claim 5, characterized in that the suction line ( 50 ) a first and a second line section ( 53 . 54 ), wherein the first line section ( 53 ) between the container receptacle ( 32 ) and the cleaning fluid container ( 30 ) and wherein the second line section ( 54 ) below the cleaning fluid container ( 30 ) is arranged. Cleaning device according to claim 6, characterized in that the first line section ( 53 ) substantially parallel to the axis of rotation ( 48 ) of the suction unit ( 45 ) is aligned. Cleaning device according to claim 6 or 7, characterized in that the second line section ( 54 ) substantially radially to the axis of rotation ( 48 ) of the suction unit ( 45 ) is aligned. Cleaning device according to claim 6, 7 or 8, characterized in that the second line section ( 54 ) along one of the engine compartment ( 24 ) lower bounding bottom wall ( 26 ) runs. Cleaning appliance according to one of the preceding claims, characterized in that the engine compartment ( 24 ) underside of a floor wall ( 26 ) is limited, in the at least one Saugluftauslass ( 59 ) is arranged. Cleaning device according to claim 10, characterized in that the at least one Saugluftauslass ( 59 ) below the suction unit ( 45 ) is arranged. Cleaning appliance according to claim 10 or 11, characterized in that in the bottom wall ( 26 ) at least one cooling air outlet ( 71 . 72 ) is arranged. Cleaning appliance according to one of the preceding claims, characterized in that laterally next to the cleaning liquid container ( 30 ) at least one cooling air inlet ( 61 ) is arranged, which via a cooling air line ( 62 ) with an electric motor ( 47 ) of the suction unit ( 45 ) connected is. Cleaning device according to claim 13, characterized in that the cooling air line ( 62 ) a first and a second line section ( 65 . 66 ), wherein the first line section ( 65 ) next to the cleaning fluid container ( 30 ) and the second line section ( 66 ) below the cleaning fluid container ( 30 ) is arranged.