EP2459325B1 - High-pressure cleaning device - Google Patents

Description

The invention relates to a high-pressure cleaning device, comprising a motor-driven pump unit, a first connection element for releasable connection to a liquid supply line which is connected to the suction side of the pump unit, and a second connection element for releasable connection to a high-pressure line which is connected to the pressure side of the pump unit , Wherein the first connection element, in an upright operating and rest position of the high-pressure cleaning device on a footprint, in an upwardly facing away from the footprint direction is aligned.

There are high-pressure cleaning devices are known in which the pump unit, for example, to achieve the lowest possible center of gravity is located deep on the high-pressure cleaner near the footprint. According deep, the first connection element and the second connection element are positioned on the high-pressure cleaner to form the pump unit leading and outgoing from this liquid lines as short as possible. The deep positioning of the connection elements makes their connection with the liquid supply line and the high-pressure line difficult.

The EP 0 813 917 A2 describes a high-pressure cleaning device with a motor-driven pump unit having connecting elements for connection to a liquid supply line and with a high-pressure line. The high-pressure cleaning device can assume two different operating positions. In a standing operating position, the connection elements are oriented at a shallow angle rising from the footprint for the high-pressure cleaner. In a horizontal operating position are the connection elements oriented at a steep angle rising from the footprint.

A high-pressure cleaning device of the type mentioned is, for example, in the US 3,575,348 described. The high-pressure cleaner has obliquely upward from a footprint facing connecting elements for connecting a liquid supply line and a high-pressure line.

Object of the present invention is to develop a high-pressure cleaning device of the type mentioned so that it is manageable in a user-friendly way.

This object is achieved in a generic high-pressure cleaner according to the invention by the features of the characterizing part of claim 1.

In the high-pressure cleaning device according to the invention, the first and optionally the second connection element are oriented away from the installation surface facing upwards. As a result, the first and optionally the second connection element for a user on the one hand in a simpler manner recognizable than in a generic high-pressure cleaner. On the other hand, the user is facilitated the connection of the liquid supply line to the first connection element and optionally the high-pressure line to the second connection element. From above, the user can arrange and connect the liquid supply line in a user-friendly manner to the first connection element and optionally arrange and connect the high-pressure line to the second connection element.

The first connection element is connected to the pump unit via a suction line. Optionally, the second connection element is connected to the pump unit via a dispensing line. In this case, it can be provided in particular that the first and optionally the second connection element is designed as part of the suction line or as part of the discharge line. The use of a suction line and optionally a discharge line makes it possible to form the first and optionally the second connection element no larger than required. At the same time, however, a positioning of the first and optionally of the second connection element on the high-pressure cleaning device can be selected, in which the user can connect the liquid supply line and optionally the high-pressure line to the high-pressure cleaning device in a user-friendly manner.

It is favorable that the first connection element and optionally the second connection element do not protrude laterally beyond a base area of the high-pressure cleaning device. This reduces the risk that a user inadvertently abuts the first and optionally the second connection element and as a result damages the high-pressure cleaning device.

The suction line extends at least with a section adjoining the first connection element in a direction pointing downwards onto the installation surface. Optionally, the delivery line extends at least with a section adjoining the second connection element in a direction pointing downwards onto the installation surface. In this way, the first and optionally the second connection element can be positioned at a greater distance from the installation surface, so that a user is facilitated the connection of the liquid supply line or the high-pressure line. It is advantageous if the first connection element and / or the second connection element extend in an obliquely upward direction away from the footprint. The oblique course of the first and / or second connection element allows a more user-friendly connection of the liquid supply line and / or the high-pressure line to the high-pressure cleaner with a natural, unbowed posture by the user. The first and / or the second connection element may be inclined relative to a plane defined by the installation surface, for example by approximately 40 ° to 80 °, and preferably by 50 ° to 70 °.

It is advantageous if the first connection element and the second connection element are aligned at approximately the same angle relative to the installation surface. This facilitates the connection of the liquid supply line and the high-pressure line in addition, and it can be achieved in particular that a user does not have to change his posture when connecting them in the high-pressure cleaning device or only insignificantly. In addition, a pleasing appearance of the high-pressure cleaner can be achieved in this way.

In particular, it is favorable if the first connection element and the second connection element are oriented approximately parallel to one another, because this facilitates the connection of the liquid supply line and the high-pressure line to the high-pressure cleaning device and gives it an even more pleasing appearance.

The first connection element and / or the second connection element preferably have a spacing of approximately 15 cm or more from the installation surface. This can ensure that between the first and / or the second connection element and the footprint sufficient space for the user remains to connect the liquid supply line or the high pressure line. In one embodiment of such a high-pressure cleaning device in practice, it has proven to be advantageous if the first and / or the second connection element have a distance of about 15 cm to 45 cm and preferably 25 cm to 40 cm to the footprint.

In particular, it can be provided that the first connection element and the second connection element have approximately the same distance to the installation surface, so that a user is enabled to connect the liquid supply line and the high-pressure line with substantially the same body posture. Moreover, such a high-pressure cleaner is given a more pleasing appearance.

It is favorable if the first connection element and the second connection element are spaced apart from each other by approximately 5 cm to 20 cm. On the one hand, this gives the possibility that a user can connect the adjoining connection elements with the liquid supply line and the high-pressure line without significantly changing his posture. On the other hand, a sufficient gap between the two connecting elements is present, so that the user sufficient freedom of movement remains to connect the liquid supply line and the high-pressure line to the high-pressure cleaner. The distance between the two connection elements may be in particular approximately 10 cm to 15 cm.

A user is further facilitated the connection of the liquid supply line to the first connection element and the high-pressure line to the second connection element when the first connection element and the second connection element are arranged on the same side of the high-pressure cleaner. Without significant change in his posture, the In this case, users establish a connection of the respective line to the respective connection element.

It is advantageous if the first connection element and / or the second connection element have a distance to a lateral boundary of the base of about 5 cm to 15 cm in projection on the footprint. Thereby, the danger is reducible that a user unintentionally abuts on the first and / or on the second connection element and thereby damages the high-pressure cleaning device. Furthermore, it is possible, even when connecting a liquid supply line and / or a high-pressure line in the form of a hose on the first or on the second connection element to hold them on the high-pressure cleaner so that they also do not protrude laterally beyond the base of the high-pressure cleaner. Such holding a hose on the high-pressure cleaner proves to be advantageous, for example, during a break in work. Also in this case can thus be ensured that the risk of damage to the high pressure cleaning device can be reduced by accidental bumping on the liquid supply line and / or the high pressure line.

To achieve a simple construction of the high-pressure cleaning device and to save costs, it is advantageous if the suction line and / or the discharge line are integrally formed. In particular, the suction line may be formed from a one-piece plastic molded part.

Preferably, the high-pressure cleaning device is designed as a heatable high-pressure cleaning device with a heat exchanger for heating the liquid in the discharge line. By means of the heat exchanger, which is operable by means of a fossil fuel, for example, can from the pump unit heated under high pressure liquid are heated in the discharge line and in this way a better cleaning effect can be achieved.

It is advantageous if the high-pressure cleaning device comprises a drum for receiving a high-pressure hose forming the high-pressure line. On the drum, the high-pressure hose can be at least partially wound up and stored in this way space-saving and user-friendly.

Figur 1:

eine perspektivische Ansicht einer ersten bevorzugten Ausführungsform eines erfindungsgemäßen Hochdruckreinigungsgerätes mit einem Gehäuse;

Figur 2:

eine Draufsicht auf einen unteren Teil des Gehäuses des Hochdruckreinigungsgerätes aus Figur 1 und

Figur 3:

eine perspektivische Ansicht einer zweiten bevorzugten Ausführungsform eines erfindungsgemäßen Hochdruckreinigungsgerätes.

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

FIG. 1:

a perspective view of a first preferred embodiment of a high-pressure cleaning device according to the invention with a housing;

FIG. 2:

a plan view of a lower part of the housing of the high-pressure cleaner from FIG. 1 and

FIG. 3:

a perspective view of a second preferred embodiment of a high-pressure cleaning device according to the invention.

A first preferred embodiment of a high-pressure cleaning device according to the invention is in FIG. 1 shown in perspective and there occupied by the reference numeral 10. It has an approximately parallelepiped housing 12 composed of several parts, with a rear side 14, a front side 16, a left side 18, a right side 20, an upper side 22 and a lower side 24. At the rear side 14 facing areas of the left side 18 and the right side 20 are mounted on the bottom 24, two wheels 26 and 28 on the housing 12.

At the bottom 24, the housing 12 forms a known per se and not shown in the drawing supporting element in the form of a support foot. About this support leg and the wheels 26 and 28, the high-pressure cleaning device 10 on a footprint 1 in the in FIG. 1 shown upright position stand. This upright position can take the high-pressure cleaner 10 both in operation, in which a liquid supply line and a high-pressure line to the high-pressure cleaner 10 are connected in the manner described below, as well as at times when the high-pressure cleaner is not in operation. At the in FIG. 1 illustrated upright position of the high pressure cleaning device 10 is therefore an operating position and a rest position thereof.

On a housing base 30, which forms the lower part of the housing 12, a pump unit in the form of a high-pressure pump 32 is held ( FIG. 2 ). The high-pressure pump 32 is arranged on a side facing the left side 18 approximately in the middle between the rear side 14 and the front side 16 on the housing base 30. It is motor-driven by a not shown in the drawing electric motor of the high-pressure cleaner 10 in a known manner to set a high-pressure cleaning device 10 supplied liquid, in particular water, to increase the cleaning effect under pressure.

In order to supply the high pressure pump 32 to be placed under pressure liquid, a suction line 34 is connected to the suction side, for example, by flanging. The suction line 34 may be formed in one piece and in particular consist of a plastic molded part. Starting from the high-pressure pump 32, it rises relative to the footprint 1 at an angle of approximately 60 ° obliquely upward and is partially embedded in a trough-shaped recess 40 which is formed by the housing base 30 on the left side 18 above the left wheel 26 , A high-pressure pump 32 facing away from the end 36 of the suction line 34 is thus positioned in the region of a recess 42 by an offset of the left side 18 of the housing 12 is formed in the direction of the center of the high-pressure cleaner 10 above the left wheel 26.

At its end 36, the suction line 34 forms a first connection element 44 in the form of a connecting piece 46, to which a not shown in the drawing and per se known liquid supply line to the high-pressure cleaner 10 can be detachably connected. As is known, the liquid supply line is typically designed as a flexible hose line.

Liquid, which is supplied to the high-pressure pump 32 via the connecting piece 46 and the suction line 34, can leave this via a pump outlet 48. To the pump outlet 48, a discharge line 50 is connected to the high-pressure pump 32, which initially extends parallel to the top of the housing base 30 with a first portion 52 near the pump outlet 48. The first section 52 is followed by a second section, which in a known and not shown manner turns a in FIG. 1 forms only slightly beginning heat exchanger 54 can be heated with the pressurized liquid in the discharge line 50 to increase the cleaning effect.

Downstream of the heat exchanger 54, the discharge line 50 comprises a third section 56, which in turn extends approximately parallel to the top of the housing base 30. At its end 58 facing away from the high-pressure pump 32, however, the delivery line 50 rises with its third section 56 upwards at an angle of approximately 60 ° to the set-up surface 1. In this case, it is partially embedded in a recess 60 which is formed in the vicinity of the recess 40 above the left wheel 26 from the housing base 30. Near the rear side 14, the discharge line 50 emerges from the housing 12 from, wherein the end 58 is also disposed in the region of the recess 42 of the housing 12.

The end 58 of the discharge line 50 is formed by a second connection element 62 in the form of a high-pressure connection 64 known per se. A high-pressure line, not shown in the drawing and known per se, can be detachably connected to the high-pressure connection 64, for example in the form of a normally used high-pressure hose ,

As already mentioned, the suction line 34 and the discharge line 50 extend obliquely upward in the region of their ends 36 and 58, respectively, in a direction pointing away from the installation surface 1 for the high-pressure cleaning device 10. The connection piece 46 and the high-pressure connection 64 are thus aligned in an obliquely upward direction away from the footprint 1 direction. Relative to a plane defined by the footprint 1, they occupy an angle of approximately 50 ° to 70 ° and typically 60 °. From the footprint 1, they are approximately 35 cm to 40 cm apart, and they have approximately the same distance from the footprint 1.

Although, in the case of the high-pressure cleaner 10, the high-pressure pump 32 is located near the bottom 24 to achieve a low center of gravity, by this arrangement of the port 46 and high-pressure port 64, the user is able to detachably connect the liquid supply line and the high-pressure line to the high-pressure cleaner 10 in a user-friendly way. The liquid supply line and the high-pressure line can be connected in particular from above to the connecting piece 46 and the high-pressure connection 64, wherein due to their inclination relative to the vertical of the user can assume a natural posture.

Without substantially changing posture, a user may connect the fluid supply line to the spud 46 and the high pressure line to the high pressure port 64 because the spud 46 and the high pressure port 64 are located close to each other on the left side 18 above the left wheel 26. They have, for example, a distance of 10 cm to 15 cm. At the same time, this distance is sufficient so that the user does not find it disturbing to connect the high-pressure line to the high-pressure port 64 when the liquid supply line is already connected to the connecting piece 46 and vice versa, because sufficient freedom of movement for the user remains.

The intermediate space between the connection piece 46 and the high-pressure connection 64 is also used meaningfully, because there is a depression 66 formed by the housing base 30 between the recesses 40 and 60. In the recess 66, an accessory for the high-pressure cleaning device 10 can be inserted, for example, a jet pipe or a nozzle, wherein the resulting due to the recess 42 space above the left wheel 26 can be exploited.

It has also proven to be advantageous in the high-pressure cleaning device 10 that the connecting piece 46 and the high-pressure connection 64 run approximately parallel to one another. This gives the high-pressure cleaner 10 on the one hand a pleasing appearance. On the other hand, it helps to avoid possible conflicts between a liquid supply line and a high-pressure line, in particular if these are each designed as flexible hose lines. The parallel arrangement of the connection piece 46 and the high-pressure connection 64 at a distance from one another reduces the risk of that the hose lines obstruct each other, for example, twist and / or knot.

The above-described advantages when connecting a liquid supply line and a high-pressure line to the high-pressure cleaning device 10 apply in a corresponding manner for their release from the high-pressure cleaner 10, which in each case also by a user in a user-friendly manner is feasible.

As in particular in FIG. 2 can be seen, both the connecting piece 46 and the high-pressure port 64 do not protrude laterally beyond a base surface of the high-pressure cleaning device 10. In projection onto the footprint 1, in particular, they have a distance from a lateral boundary of the base of, for example, 5 cm to 15 cm, typically about 10 cm.

This is advantageous because it reduces the risk that a user inadvertently abuts port 46 and / or high pressure port 64, thereby damaging high pressure cleaner 10, both in the rest position and in the operative position.

The distances between the connection piece 46 and the high-pressure connection 64 from the lateral boundary of the base area reduce the risk of damage to the high-pressure cleaning device 10 even if a liquid supply line or a high-pressure line in the form of hose lines are connected to the connection piece 46 and the high-pressure connection 64. These can be deposited, for example, in the wound state on the upper side 22 of the housing 12, wherein they are arranged starting from the connecting piece 46 or from the high-pressure connection 64 in the region of the recess 42 are. In this case, also the hose lines do not protrude beyond the lateral boundary of the high-pressure cleaning device 10. The risk of a user inadvertently abutting the tubing is thus reduced.

A second preferred embodiment of a high-pressure cleaning device according to the invention is in FIG. 3 shown in perspective and there occupied by the reference numeral 80. Components and features of the high-pressure cleaning device 80, which are formed the same or equivalent to components of the high-pressure cleaning device 10, are assigned the same reference numerals. The achievable with these components and features advantages of the high-pressure cleaning device 10 can also be achieved with the high-pressure cleaner 80.

In the high-pressure cleaning device 80, the end of the discharge line 50 facing away from the high-pressure pump 32 is formed by a third section 82, which adjoins the second section below the heat exchanger 54, not shown in the drawing. It extends in the vertical direction and emerges from the housing 12 at the upper side 22 near the left side 18.

With a not shown in the drawing and the heat exchanger 54 facing away from the third portion 82 enters the housing 84 of a disposed on the top 22 hose drum 86 and forms at the end of a high pressure port. This is connected in a known and therefore unspecified manner with a high-pressure line 88 in the form of a high-pressure hose 90. The high pressure hose 90 can be wound onto the hose reel 86 and stored in this space saving and user-friendly. The hose reel 86 is attached to a U-shaped handling handle 92, which extends from the upper side 22 in the vertical direction and serves for tilting and for moving the high-pressure cleaning device 80.

Claims (16)

1. High-pressure cleaning apparatus (10; 80), comprising a pump unit (32) drivable by a motor, a first connection element (44) for detachable connection to a liquid supply conduit, the first connection element (44) being connected to the suction side of the pump unit (32), and a second connection element (62) for detachable connection to a high-pressure conduit (88), the second connection element (62) being connected to the pressure side of the pump unit (32), the first connection element (44), in an upright operative and inoperative position of the high-pressure cleaning apparatus (10; 80) on a set-down surface (1), being oriented in a direction facing upwards away from the set-down surface (1), characterized in that the pump unit (32) is held on a housing base (30) which forms the lower part of a housing (12) of the high-pressure cleaning apparatus (10; 80), in that the first connection element (44) is connected to the pump unit (32) by a suction conduit (34) which, at least with a section adjoining the first connection element (44), extends in a direction facing downwards towards the set-down surface (1) and which is partially embedded in a depression (40) which is formed by the housing base (30) above a wheel (26) of the high-pressure cleaning apparatus (10; 80), and in that the first connection element (44) is formed at an end of the suction conduit (34) that faces away from the pump unit (32) and is positioned in the area of a recess (42) of the housing (12) that is formed above the wheel (26), the first connection element (44) not projecting laterally beyond a footprint of the high-pressure cleaning apparatus (10; 80).
2. High-pressure cleaning apparatus in accordance with claim 1, characterized in that the suction conduit (34) is of one-piece configuration.
3. High-pressure cleaning apparatus in accordance with any one of the preceding claims, characterized in that the first connection element (44), in projection onto the set-down surface (1), is at a distance of approximately 5 cm to 15 cm from a lateral boundary of the footprint.
4. High-pressure cleaning apparatus in accordance with any one of the preceding claims, characterized in that the second connection element (62) is oriented in a direction facing upwards away from the set-down surface (1), the second connection element (62) being connected to the pump unit (32) by a discharge conduit (50) which, at least with a section adjoining the second connection element (62), extends in a direction facing downwards towards the set-down surface (1) and which is partially embedded in a depression (40) which is formed by the housing base (30) above the wheel (26), the second connection element (62) being formed at an end of the discharge conduit (50) that faces away from the pump unit (32) and being arranged in the area of the recess (42), and the second connection element (62) not projecting laterally beyond the footprint of the high-pressure cleaning apparatus (10; 80).
5. High-pressure cleaning apparatus in accordance with claim 4, characterized in that the discharge conduit (50) is of one-piece configuration.
6. High-pressure cleaning apparatus in accordance with claim 4 or 5, characterized in that the second connection element (62), in projection onto the set-down surface (1), is at a distance of approximately 5 cm to 15 cm from a lateral boundary of the footprint.
7. High-pressure cleaning apparatus in accordance with any one of claims 4 to 6, characterized in that the first connection element (44) and the second connection element (62) are oriented at approximately the same angle relative to the set-down surface (1).
8. High-pressure cleaning apparatus in accordance with any one of claims 4 to 7, characterized in that the first connection element (44) and the second connection element (62) are oriented approximately parallel to each other.
9. High-pressure cleaning apparatus in accordance with any one of claims 4 to 8, characterized in that the first connection element (44) and the second connection element (62) are spaced from each other by approximately 5 cm to 20 cm.
10. High-pressure cleaning apparatus in accordance with any one of the preceding claims, characterized in that the first connection element (44) and/or the second connection element (62) extend in a direction facing upwards at an incline away from the set-down surface (1).
11. High-pressure cleaning apparatus in accordance with claim 10, characterized in that the first connection element (44) and/or the second connection element (62) are inclined by approximately 50° to 70° relative to a plane defined by the set-down surface (1).
12. High-pressure cleaning apparatus in accordance with any one of the preceding claims, characterized in that the first connection element (44) and/or the second connection element (62) are at a distance of approximately 15 cm or more from the set-down surface (1).
13. High-pressure cleaning apparatus in accordance with any one of the preceding claims, characterized in that the first connection element (44) and the second connection element (62) are arranged on the same side (18) of the high-pressure cleaning apparatus (10; 80).
14. High-pressure cleaning apparatus in accordance with any one of the preceding claims, characterized in that the high-pressure cleaning apparatus (10; 80) is configured as a heatable high-pressure cleaning apparatus (10; 80) having a heat exchanger (54) for heating the liquid in the discharge conduit (50).
15. High-pressure cleaning apparatus in accordance with claim 14, characterized in that the heat exchanger (54) can be operated with a fossil fuel.
16. High-pressure cleaning apparatus in accordance with any one of claims 1 to 3 or 10 to 15, characterized in that the high-pressure cleaning apparatus (80) comprises a reel (86) for accommodating a high-pressure hose (90) forming the high-pressure conduit (88).

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