CN105050737B - High pressure cleaning equipment - Google Patents

Abstract

The invention relates to a high-pressure cleaning device (10) comprising: a motor pump unit (20) which is at least partially enclosed by the housing (14) and has a motor (22) and a pump (24) for cleaning liquid which is driven by the motor; a suction hose (56) coupled to the pump capable of delivering a cleaning agent mixed into the cleaning liquid to the pump. In order to allow the suction hose to be stored and protected from damage in a simple manner when not in use and to allow the user to easily reach the suction hose when needed, it is proposed: the housing has a hose groove (52) for receiving the suction hose, which is covered by a hose groove covering element (54) on which a free end (62) of the suction hose or a filter element (64) arranged on the free end of the suction hose can be positioned, and which has a through-opening (92) through which the suction hose can be pulled out of the hose groove.

Description

High pressure cleaning equipment

technical field

The invention relates to a high-pressure cleaning device with a motor pump unit at least partially surrounded by a housing and having a motor and a pump for cleaning fluid driven by the motor; the high-pressure cleaning device also has A suction hose coupled to the pump for a cleaning agent that can be mixed into the cleaning liquid, through which the cleaning agent can be delivered to the pump.

Background technique

With such a high-pressure cleaning device, a cleaning fluid, preferably water, can be pressurized and directed at the surface to be cleaned. The cleaning liquid can be delivered to the pump of the high-pressure cleaning device via a liquid delivery line, and the cleaning liquid pressurized by the pump can be discharged via a liquid discharge line, for example a high-pressure hose. Spray bars or lances are usually arranged at the free end of the liquid discharge line.

To improve the cleaning effect, detergent can be mixed into the cleaning solution. Cleaning agent can be delivered to the pump via the suction hose. The suction hose is connected to the pump. For this purpose, the first end of the suction hose can be connected directly to the pump housing, but it can also be provided that the first end of the suction hose is connected to a suction line which is connected to the pump The suction inlet of the A cleaning agent container filled with liquid cleaning agent is connected to a second end of the suction hose facing away from the pump, which is referred to below as the "free end of the suction hose". Detergent can be pumped out of the detergent container and mixed into the cleaning solution.

A high-pressure cleaning device is known from publication EP 0 904 856 B1, in which a cleaning agent container is integrated into the high-pressure cleaning device. In many cases, however, good cleaning results can already be achieved without mixing liquid detergents, so the use of detergents is not always necessary. For the use of cleaning agents, laid-open document DE 91 17 199 U1 proposes an additional container for holding cleaning agents, which can be positioned on the housing of a high-pressure cleaning device. The additional container is then connected to the pump via a suction hose.

If no cleaning agent needs to be mixed in to solve the specific cleaning task, the cleaning agent container can be detached from the free end of the suction hose and the suction hose connected to the pump via its first end can be accommodated in the high-pressure cleaning device superior. It is conceivable that the suction hose is fastened with its free end to a hose holder protruding from the housing. However, there is a risk of damage to the suction hose and/or the hose support. The risk of damage exists in particular if a filter element is arranged at the free end of the suction hose, by means of which the cleaning agent which can be fed to the pump can be filtered.

Contents of the invention

The object of the present invention is to improve a high-pressure cleaning device of the type mentioned at the outset in such a way that the suction hose can be stored in a simple manner when not in use and can be protected against damage, and that the high-pressure cleaning The user of the device can easily reach this suction hose when required.

According to the invention, this task is solved in this type of high-pressure cleaning device in that the housing of the high-pressure cleaning device has a hose groove for receiving the suction hose, wherein the hose groove is formed by a soft The hose channel covering element covers the hose channel covering element on which the free end of the suction hose or a filter element arranged on the free end of the suction hose can be positioned and which has a through-opening , the suction hose can be pulled out of the hose groove through the through-opening when required.

The housing of the high-pressure cleaning device according to the invention has a hose channel, ie a receiving chamber, in which the suction hose can be stored if liquid cleaning agent should not get mixed into the cleaning liquid. The hose channel is covered by a hose channel cover element so that the suction hose stored in the hose channel is protected from damage. The hose channel cover element has a through-opening through which the suction hose is pulled out of the hose channel if the cleaning liquid is to be mixed into the liquid cleaning agent delivered to the pump via the suction hose. After the suction hose has been used, it can be guided back into the hose channel via the through-opening of the hose channel cover element. In order for the user to be able to reach the suction hose in a simple manner, the free end of the suction hose, i.e. the end of the suction hose facing away from the pump, can be positioned, in particular detachably fastened to the suction hose. The suction hose slots onto the cover element. Alternatively, it can be provided that a filter element is arranged at the free end of the suction hose. In these cases, the filter element arranged at the free end of the suction hose can be positioned, in particular releasably fastened to the suction hose slot cover element. Thus, the suction hose slot cover element provides the user with the possibility to grasp the free end of the suction hose or the filter element arranged on the free end of the suction hose in order to immediately Pull the suction hose out of the hose groove.

The first end of the suction hose facing the pump can remain permanently connected to the pump without completely separating the suction hose from the pump, as liquid cleaning agents should not be mixed into the cleaning liquid.

The hose channel cover element can be held on the housing of the high-pressure cleaning device in a detachable or non-detachable manner. For example, it can be provided that the hose channel cover element can be detachably or non-detachably locked to the housing.

In an advantageous embodiment of the invention, the housing forms the rear wall of the hose channel and the side walls surrounding the hose channel in the circumferential direction, and the hose channel covering element is located on the side of the hose channel facing away from the rear wall. remain on the housing.

Advantageously, the hose channel has a holder on which the free end of the suction hose or the filter element arranged on the free end of the suction hose can be positioned, in particular can be fastened in a detachable manner and the holder has at least one recess via which the free end of the suction hose or the filter element can be grasped by the user. The holding element enables the user to easily arrange and advantageously fasten the free end of the suction hose or the filter element arranged on the free end of the suction hose to the hose channel cover element, And by providing at least one recess through which the user can grasp the free end of the suction hose or the filter element, it is ensured that the user can easily pull the suction hose out of the hose groove when required , wherein the first end of the suction hose remains connected to the pump.

In a preferred embodiment of the invention, the holder has two recesses, between which the free end of the suction hose or a filter element arranged on the free end of the suction hose can be positioned. .

These two recesses make it easier for the user to grasp, for example with the thumb and forefinger, the free end of the suction hose or the filter element arranged on the free end of the suction hose.

Advantageously, the two recesses of the holder are opposite each other.

Advantageously, the holder is designed as a sleeve into which the free end of the suction hose or a filter element arranged on the free end of the suction hose is inserted, and the holder has two diametrically opposed set concave.

Advantageously, the sleeve is designed cylindrically, which then makes it easier for the user to insert and remove the free end of the suction hose or the filter element arranged on the free end of the suction hose.

Advantageously, the sleeve is oriented in alignment with the through-opening of the hose channel cover element. In this refinement, the sleeve forms not only a holding element for the free end of the suction hose or for a filter element arranged on the free end of the suction hose, but also a guide part, which enables It is easier to pull the suction hose out of the hose groove and to introduce the suction hose into the hose groove.

In a preferred embodiment of the invention, the hose channel cover element has two pocket-shaped recesses, between which the holder is arranged and which are each coupled to a recess of the holder. These two recesses make it easier for the user to grasp the free end of the suction hose or the filter element arranged on the free end of the suction hose. In this case, the user can, for example, insert his thumb and forefinger into the pocket-shaped recess and then grasp the free end of the suction hose or the handle arranged on the free end of the suction hose through the recess of the holder. filter element.

The housing of the high-pressure cleaning device according to the invention preferably has two half-shells, which accommodate between them at least part of the motor-pump unit. Instead of the two half shells, at least one further housing part can be used, so that the motor-pump unit is completely surrounded by the housing.

Advantageously, the hose channel is delimited by two half-shells of the housing, on which the hose channel covering element is held in a detachable or non-detachable manner. Thus, the two half-shells can accommodate the hose channel covering element between them. The result of this is that the hose channel cover element can be mounted very simply on the housing of the high-pressure cleaning device.

In an advantageous embodiment of the invention, the two half-shells define an assembly opening which releases the hose channel and on which the hose channel covering element is held.

Advantageously, the two half-shells each form one half of the hose channel. Particularly advantageously, the two half-shells each delimit one half of the assembly opening. If the two half shells are joined together, the hose channel is thus formed without using additional parts. It is only necessary to position the hose channel covering element on the assembly opening defined by the two half shells.

In an advantageous embodiment of the invention, the hose channel cover element engages from behind the edge of the fitting opening formed by the two half shells.

Particularly advantageously, the hose channel covering element has a supporting edge which can be placed on the edge of the fitting opening and a fastening part which snaps into the fitting opening from behind. In an advantageous embodiment of the invention, the fastening part of the hose channel cover element protrudes from the rear side of the wall of the hose channel cover element which covers the mounting opening, facing the inner space of the hose channel.

Advantageously, the hose channel cover element comprises four fastening parts which engage behind the edge of the mounting opening, wherein two fastening parts are each diametrically opposite one another.

Advantageously, the two half-shells of the housing of the high-pressure cleaning device according to the invention form a carrying handle, wherein the hose groove covered by the hose groove covering element is arranged on the first end of the carrying handle. The carrying handle facilitates the transport of the high-pressure cleaning device, and the positioning of the hose channel and the hose channel cover element on the end of the carrying handle facilitates the handling of the high-pressure cleaning device, since the user can easily The handle and thus also the hose groove arranged at the end of the handle are detected in a similar manner.

Advantageously, the main switch of the high-pressure cleaning device is arranged on the second end of the handle. With this main switch, the high-pressure cleaner can be switched on and off. As a result of the positioning of the hose channel at the first end of the handle and the positioning of the main switch at the other end of the handle, handling of the high-pressure cleaning device is further simplified.

Advantageously, the two half-shells of the housing delimit a vertically oriented separation plane in the use position of the high-pressure cleaning device, and the hose channel cover element is designed mirror-symmetrically with respect to the separation plane. A use position of the high-pressure cleaning device is understood here to be a position that the high-pressure cleaning device can occupy during its operation. The provision of a vertical separating plane enables a particularly simple assembly of the high-pressure cleaning device, since the two half-shells can be fitted laterally onto the motor-pump unit in order to at least partially surround the motor-pump in the circumferential direction after assembly unit. The two half-shells may define a hose channel and accommodate a hose channel covering element between them. A mirror-symmetrical embodiment of the hose channel cover element with respect to the separation plane formed by the two half-shells has proven to be advantageous. This simplifies the production of the hose channel cover element, and the hose channel cover element can be positioned in a particularly simple manner between the two half shells and is clearly recognizable to the user after assembly.

Advantageously, the two half-shells and the hose channel cover element are designed as plastic molded parts. This makes it possible to manufacture the two half-shells and the hose channel cover element particularly cost-effectively.

As mentioned above, a filter element can be arranged at the free end of the suction hose in order to filter the cleaning agent sucked in by the pump. Particularly advantageously, a non-return valve which opens in the direction of the pump is integrated into the filter element. A check valve ensures that liquid can only flow through the suction hose in one direction. This prevents liquid from escaping unintentionally from the high-pressure cleaning device via the suction hose.

Description of drawings

The following description of preferred embodiments of the present invention is used for elucidation in detail with reference to the accompanying drawings. in:

Figure 1 shows a perspective view of a high-pressure cleaning device according to the invention;

Figure 2 shows an exploded perspective view of a high-pressure cleaning device;

3 shows a perspective view of the first half-shell of the housing of the high-pressure cleaning device;

4 shows a perspective view of the second half-shell of the housing of the high-pressure cleaning device;

5 shows a perspective view obliquely in front of the hose channel cover element of the high-pressure cleaning device;

Fig. 6 shows a perspective view obliquely rearward of the hose channel covering element of Fig. 5;

FIG. 7 shows a schematic sectional view of a hose slot of a high-pressure cleaning device covered by a hose slot cover element, wherein the suction hose is positioned in the hose slot; and

FIG. 8 shows a schematic sectional view of the hose channel of FIG. 7 , with the suction hose being pulled out of the hose channel.

detailed description

The figure schematically shows a high-pressure cleaning device 10 according to the invention in a use position in which the longitudinal axis 12 of the high-pressure cleaning device 10 is oriented vertically. The high-pressure cleaning device 10 includes a housing 14 with an upper housing region 16 and a lower housing region 18 , which together surround a motor-pump unit 20 with a motor 22 and a pump 24 driven by the motor 22 . The cleaning fluid, preferably water, can be pressurized by means of a pump 24 . The cleaning fluid can be delivered to the pump 24 via the first coupling element 26 and the cleaning fluid pressurized by the pump 24 can be discharged by the second coupling element 28 . A fluid transport line can be coupled to the first coupling element 26 and a fluid discharge line, for example a pressure hose, can be coupled to the second coupling element 28 .

Two rollers 30 , 32 are rotatably mounted on the lower housing region 18 . The high-pressure cleaning device 10 can be moved along the ground by means of rollers 30 , 32 . To this end, the high-pressure cleaning device 10 can be pivoted about a common axis of rotation 34 of the two rollers 30 , 32 starting from its position of use shown in FIG. 1 in which the longitudinal axis 12 is oriented vertically. Turn, so that the high-pressure cleaning device 10 can then move in the manner of a trolley.

The high-pressure cleaning device 10 has a U-shaped push frame 36 which facilitates the movement of the high-pressure cleaning device 10 .

The upper housing region 16 includes a first half shell 38 and a second half shell 40 . The two half-shells 38 , 40 surround the upper region of the motor-pump unit 20 facing the push frame 36 in the circumferential direction and are oriented substantially mirror-symmetrically to one another. The two half-shells form between them a substantially vertically oriented parting plane 42 in which the two half-shells meet with their edges facing each other and a parting seam is formed between them. .

On the outer sides of the two half-shells 38 , 40 facing away from each other, the two half-shells each have a cover 44 or 46 which covers the guide for the push frame 36 formed on the outside by the half-shells 38 , 40 aisle. The cover part 46 has clips 48 into which the spray bars, which are known per se and are therefore not shown in the figures for better overview, are clipped. The spray bar can be coupled to the free end of a pressure hose, which can be connected to the pump 24 via the second coupling element 28 .

The two half-shells 38, 40 form the handle 50, and the two half-shells 38, 40 jointly delimit a hose groove 52 on the lower end of the handle 50, which is covered by a hose groove cover element 54 and is configured to In the chamber of the suction hose 56. This can be seen in particular from FIG. 7 . A first end region 58 of the suction hose 56 passes through an outlet opening 60 of the hose channel 52 and establishes a flow connection with the pump 24 . For this purpose, a first end (not shown in the figure) of the suction hose 56 , which emerges from the hose channel 52 via the outlet opening 60 , is directly coupled to the pump 24 . Alternatively, it can be provided that the first end of the suction hose 56 is coupled to a connecting part of the first coupling element 26 which is not shown in the figure and is known to the person skilled in the art, via which connecting part , the coupling element 26 establishes a flow connection with the pump 24 . When required, a liquid cleaning agent can be fed to the pump 24 via the suction hose 56 , which can be mixed with the cleaning liquid delivered by the pump.

A free end 62 of the suction hose 56 facing away from the pump 24 is connected to a filter element 64 into which a non-return valve 66 , which is only schematically shown in the figure, is integrated. The cleaning agent delivered to the pump 24 as required can be filtered by means of the filter element 64 , and the non-return valve 66 , which opens in the direction of the pump 24 , ensures that no liquid is accidentally discharged from the high-pressure cleaning device 10 by the pump 24 via the suction hose 56 . Outflow.

The hose channel 52 is delimited on its rear side facing the motor pump unit 20 by a rear wall which is formed by a first rear wall section 68 and a second rear wall section 70 . The first rear wall section 68 is formed by the first half shell 38 and the second rear wall section 70 is formed by the second half shell 40 . The first rear wall section 68 has the aforementioned outlet opening 60 through which the first end region 58 of the suction hose 56 facing the pump 24 can be led out of the hose channel 52 on the rear side.

In addition to the first rear wall section 68 , the first half shell 38 forms a first side wall 72 of the hose channel 52 and a first top wall section 74 and a first bottom wall section 76 of the hose channel 52 . In a corresponding manner, the second half-shell 40 forms a second side wall 78 of the hose channel 52 opposite the first side wall 72 and a second top wall section 80 and a second bottom wall section of the hose channel 52 . Paragraph 82.

On the front side of the hose channel 52 facing away from the motor-pump unit 20 , the two half-shells 38 , 40 jointly form a mounting opening 84 which is surrounded by a mounting edge 86 which is respectively bounded by the first half-shell 38 and the second half-shell. The half shells 40 are formed half by half.

The fitting opening 84 of the hose channel 52 is covered by the hose channel covering element 54 which is arranged between the two half-shells 38 , 40 and with respect to the separation plane defined by the two half-shells 38 , 40 42 mirror symmetrically designed. This can be seen in particular from FIG. 5 .

The hose channel cover element 54 has a centrally arranged sleeve 90 which forms a retaining element for the filter element 64 arranged on the free end 62 of the suction hose 56 . The filter element 64 can be completely inserted into the sleeve 90 and clamped by the sleeve 90 . This can be seen in particular from FIG. 7 .

The sleeve 90 is arranged aligned with a through-opening 92 of the hose channel cover element 54 , through which the suction hose 56 can be pulled out of the hose channel 52 if necessary. This can be seen in particular from FIG. 8 .

The sleeve 90 is inserted into the lumen of the hose channel 52 . The sleeve 90 has a first recess 94 on the side facing the first half-shell 38 , while the sleeve 90 has a second recess 96 on the side facing the second half-shell 40 . The two recesses 94 , 96 are diametrically opposite each other and extend to a front end 98 of the sleeve 90 facing away from the through-opening 92 .

On the front side 100 of the cover element 54 facing away from the hose channel 52 , a basin-shaped or pocket-shaped first recess 102 adjoins the first recess 94 , while on the front side 100 of the hose channel cover element 54 the basin A second concave portion 104 in the shape of a pocket or a pocket is coupled to the second concave portion 96 . The two recesses 102, 104 enable the user to grasp the filter element 64 positioned in the sleeve 90 with the thumb and forefinger, so that the filter element 64 of the sleeve 90 can be taken out and the filter element 64 connected to it can be removed at the same time. The suction hose 56 is pulled out of the hose groove 52 . This offers the user the possibility of inserting the filter element 64 into a detergent container filled with detergent, so that the detergent can then be sucked out by the pump 24 via the suction hose 56 and can be mixed into the in the cleaning solution. For example a soap solution can be used as a cleaning agent. The cleaning effect achievable by the high-pressure cleaning device 10 can be improved by admixing cleaning agents.

If no cleaning agent needs to be mixed in, the user can guide the suction hose via the through-opening 92 into the hose groove 52 up to the filter element 64 arranged on the free end 62 of the suction hose 56 with the integrated non-return valve 66 is completely contained by sleeve 90 . In this case, the filter element 64 together with the non-return valve 66 can be clamped into the sleeve 90 , so that the filter element 64 together with the non-return valve 66 is securely fixed in the sleeve 90 .

In order to fasten the hose channel cover element 54 on the two half shells 38 , 40 , the hose channel cover element 54 has a circumferential support edge 106 which rests on the assembly edge 86 surrounding the assembly opening 84 when the high-pressure cleaning device 10 is assembled. , wherein the mounting edge 86 is gripped from behind on the rear side by fastening elements 110 , 112 , 114 and 116 , which project wing-like outwards from the wall 108 of the hose channel cover element 54 . In addition to their function of snapping into the mounting edge 86 from behind, the fastening parts 110 , 112 , 114 and 116 also form reinforcing ribs which improve the mechanical loadability of the hose channel cover element 54 .

The high-pressure cleaning device 10 can be operated with and without liquid cleaning agents mixed into the cleaning fluid delivered by the pump 24 . If no cleaning agent needs to be mixed in, the suction hose 56 can be stored in the hose groove 52 . The hose channel 52 is covered by a hose channel cover element 54 so that the suction hose 56 is protected from damage. The filter element 64 arranged on the free end 62 of the suction hose 56 can be co-located with the check valve 66 in the sleeve 90 and clamped therein.

If liquid cleaning agents are to be mixed into the cleaning solution, the user can grasp the filter element 64 and the non-return valve 66 with the thumb and forefinger via the pocket-shaped recesses 102, 104 and the recesses 94, 96 and then turn the suction soft The tube 56 is pulled out of the hose groove 52 . The free end 62 of the suction hose 56 can then be inserted together with the filter element 64 and the non-return valve 66 into the cleaning agent container filled with cleaning agent, so that the cleaning agent can then be drawn from the pump 24 via the suction hose 56 suction, and the cleaning agent can be mixed into the cleaning fluid delivered by the pump. If mixing is no longer required, the user can reintroduce the suction hose 56 through the through-opening 52 into the hose channel 52 and then position the filter element 64 together with the non-return valve 66 in the sleeve 90 .

Claims (14)

1. A high-pressure cleaning device (10) having a motor pump unit (20) at least partially surrounded by a housing (14) and having a motor (22) and (22) a driven pump (24) for cleaning liquid; the high-pressure cleaning device has a suction hose (56) for a cleaning agent that can be mixed into the cleaning liquid that is coupled to the pump (24), The cleaning agent can be conveyed to the pump (24) via the suction hose (56), characterized in that the housing (14) has a flexible housing for receiving the suction hose (56). A pipe channel (52), wherein the hose channel (52) is covered by a hose channel cover element (54), the free end (62) of the suction hose (56) or is arranged in the suction A filter element (64) on the free end (62) of the hose (56) can be positioned on the hose slot cover element, and the hose slot cover element has a through opening (92) through which the The through-opening enables the suction hose (56) to be pulled out of the hose groove (52). 2. The high-pressure cleaning device (10) according to claim 1, characterized in that the hose channel cover element (54) has a holder, the free end (62) of the suction hose (56) or the filter element (64) arranged on the free end (62) of the suction hose (56) can be positioned on the holder, and the holder has at least one recess (94, 96), The free end (62) of the suction hose (56) or the filter element (64) can be grasped by the user via the recess. 3. The high-pressure cleaning device (10) according to claim 2, characterized in that the holder has two recesses (94, 96), the free end (62) of the suction hose (56) Or a filter element ( 64 ) arranged on the free end ( 62 ) of the suction hose ( 56 ) can be positioned between the two recesses. 4. The high-pressure cleaning device (10) according to claim 2, characterized in that the holder is designed as a sleeve (90), the free end (62) of the suction hose (56) or the arrangement A filter element (64) at the free end (62) of the suction hose (56) can be inserted into the sleeve, and the holder has two recesses (94) diametrically opposite each other , 96). 5 . The high-pressure cleaning device ( 10 ) according to claim 4 , characterized in that the sleeve ( 90 ) is arranged aligned with the through-opening ( 92 ) of the hose channel cover element ( 54 ). 6. The high-pressure cleaning device (10) according to claim 3, characterized in that the hose channel cover element (54) has two recesses (102, 104), between which The holder is arranged, and the two recesses are respectively coupled to recesses (94, 96) of the holder. 7. The high-pressure cleaning device (10) according to any one of the preceding claims, characterized in that the housing (14) has two half-shells (38, 40) which At least a part of the motor pump unit (20) is housed therebetween, and the two half shells jointly define the hose groove (52), and the hose groove cover element (54) is held between the two half shells. on a half shell. 8. The high-pressure cleaning device (10) according to claim 7, characterized in that the two half-shells (38, 40) define an assembly opening (84) which releases the hose channel ( 52), and the hose groove cover element (54) is held on the fitting opening. 9. The high-pressure cleaning device (10) according to claim 8, characterized in that the hose channel cover element (54) engages behind the mounting opening (84) by the two half shells ( 38, 40) forming an edge (86). 10. The high-pressure cleaning device (10) according to claim 7, characterized in that the two half-shells (38, 40) form a handle (50), wherein the handle (50) A hose groove ( 52 ) covered by the hose groove cover element ( 54 ) is arranged on the first end. 11. The high-pressure cleaning device (10) according to claim 10, characterized in that a main switch of the high-pressure cleaning device (10) is arranged on the second end of the handle (50). 12. The high-pressure cleaning device (10) according to claim 7, characterized in that the two half-shells (38, 40) define a vertically oriented The parting plane (42), and the hose channel cover element (54) is designed mirror-symmetrically with respect to the parting plane (42). 13. The high-pressure cleaning device (10) according to claim 7, characterized in that the two half shells (38, 40) and the hose channel cover element (54) are designed as plastic molded parts. 14. The high-pressure cleaning device (10) according to any one of claims 1 to 6, characterized in that a non-return valve (66) which opens in the direction of the pump (24) is integrated into the In the filter element (64) on the free end (62) of the suction hose (56).