EP2488310B1 - High-pressure cleaning device - Google Patents

Description

The invention relates to a high-pressure cleaning device, comprising a required for operation first functional device in the form of a heatable heat exchanger for heating a deliverable from the high-pressure cleaning fluid and at least one further required for operation second functional device, based on a positioning of the high-pressure cleaner with upright heat exchanger on a footprint , is arranged below the heat exchanger, wherein the high-pressure cleaning device comprises a first unit unit with a support device on which the heat exchanger is held, and a second unit unit with a support device to which the at least one second functional device is held.

There are generic high-pressure cleaning devices are known to the maintenance of which inaccessible below the heat exchanger arranged at least a second functional device must be a labor-intensive disassembly of the high-pressure cleaner. In particular, the expansion of the heat exchanger in order to achieve the at least one second functional device, takes experience, a long time to complete.

The WO 2008/030799 A2 , which is considered to be the closest prior art, describes a high-pressure cleaning device with a wheeled frame, a heated gas-driven heat exchanger for heating a dispensable from the high-pressure cleaner fluid and a motor-driven pump unit. The first heated by means of the heat exchanger liquid is pressurized by the pump unit and can be discharged via a discharge line in the form of a high pressure hose from the high pressure cleaner. The frame has a tubular frame with a support for the pump unit and a drive motor. The heat exchanger is connected via a screw connection with the tubular frame and arranged above the pump unit and the drive motor.

The DE 196 07 882 C1 describes a high-pressure cleaning device comprising a structural unit of an electric motor and a high-pressure pump and a housing surrounding the unit. The housing and the assembly are connected to each other at the pump end of the assembly by releasable fasteners. At the pump end remote from the unit, the housing is supported on radially projecting from the housing of the electric motor cooling fins.

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

This object is achieved by a high-pressure cleaner with the features of claim 1.

The high-pressure cleaning appliance according to the invention comprises a first appliance unit and a second appliance unit, which have a carrying device or a supporting device. The support means is non-positively and / or positively releasably connectable to the support means. A disassembly of the high-pressure cleaning device can be done by releasing this non-positive and / or positive connection of the support device and the support means together. This makes it possible to bring the first unit of equipment in distance to the second unit. Because the heat exchanger is held on the first device unit and in particular on the carrying device and the at least one second functional device on the second device unit and in particular on the support means, in this way the possibility is given to the heat exchanger in a simple and time-saving manner at a distance from at least one to bring the second functional device. This is a user thus easier to access for maintenance, so that the high-pressure cleaner according to the invention proves to be maintenance-friendly than generic high-pressure cleaning equipment.

For maintenance, the at least one second functional device may remain held on the support device and / or the heat exchanger on the support device. This gives the possibility, in particular, of carrying out a functional test of the high-pressure cleaning device when the device units are placed at a distance. This saves a user from having to completely reassemble the high-pressure cleaning device after the maintenance of, for example, the at least one second functional device, before a functional test can be carried out.

The at least one second functional device is in particular as a pump unit to increase the fluid pressure and / or as a motor for the pump unit and optionally as a fan for generating an air stream cooling the engine and / or as an impeller for generating a combustion air flow for the heat exchanger and / or as a fuel pump designed to promote a fuel for the heat exchanger and / or as an electrical device of the high-pressure cleaner. The at least one second functional device may thus also comprise a plurality of components of the high-pressure cleaning device. For example, it may be a unit formed of the pump unit and the motor or a unit constituted by the pump unit, the motor, the fan wheel for the motor, the fan wheel and the fuel pump.

It is favorable if the at least one second functional device or a cover of the at least one second functional device is freely accessible to the user after release of the carrying device from the support device, because such a high-pressure cleaning device is still easier to maintain. This can be implemented, for example, in that the first device unit covers the second device unit in the interconnected state and that the at least one second functional device is arranged on an upper side of the second device unit. After releasing the support means and the support means from each other, the first unit unit can be placed at a distance from the second unit, for free accessibility of the at least one second functional device or optionally a cover thereof.

The carrying device has a first support part for holding the heat exchanger, which can be detachably connected to a plurality of support elements encompassed by the support device. On the support elements, the first support member may be supported with the heat exchanger held thereon in the connected state of the support means and the support means with each other. This gives the possibility of a frictional connection of the support means with the support means utilizing the force acting on the heat exchanger and thus on the first support member weight force. It can be provided that the first support member additionally by means of one or more fasteners with the one or more support elements for forming a complementary releasable positive connection is connectable.

It is advantageous that two or more support elements are provided, each of which forms a support surface for the first support part on its side facing the first unit unit side. On the support surface, the first support member may rest to form a frictional connection of the support means with the support means.

A structurally simple embodiment of the carrying device can be achieved in that the first support member is designed plate-shaped and forms a footprint for the heat exchanger. On the footprint is the heat exchanger, where it can be held by means of connecting elements to the first support member and thus to the support means. The plate-shaped support member rests on the bearing surfaces of the two or more support elements. As a result, for example, a reliable frictional connection of the support device and the support device can be formed with each other by utilizing the weight of the heat exchanger.

It is advantageous if a receiving space for the at least one second functional device is formed below the first supporting part. If the first support part is designed plate-shaped as described above, it can limit the receiving space, for example, on the top side. The receiving space can be formed, for example, by the fact that the one or more support elements extend in the vertical direction starting from an upper side of the support device and form a contact surface and in particular a support surface for the first support part on their side facing the first unit unit. Alternatively or additionally, it may be provided that the support device has a trough for receiving the at least one second functional device forms, which is covered at the top of the first support member at least partially.

It is advantageous if the support device has at least one second support part which is fixed to the first support part, and if the support device comprises at least one receptacle for the at least one second support part. The use of the at least one second support part makes it possible to give the support device a higher stability and to derive the weight of the first device unit more uniformly and better distributed to the second device unit.

The at least one second support part preferably engages in a form-fitting manner in the at least one receptacle encompassed by the support device. This gives the possibility to form a positive connection between the support means and the support means. By loosening the at least one second support part from the receptacle, this positive connection between the support device and the support device can be canceled.

To achieve a simple construction of the carrying device, it has proved to be advantageous if the at least one second supporting part is designed as a profile bar extending in a vertical direction. The at least one receptacle of the support means for the at least one second support member is advantageously designed as a blind hole or as a sleeve into which or can engage the profile bar form fit. At a bottom of the blind hole or the sleeve, the profile bar can also be supported on the support device. The weight of the first unit unit can be derived by the support means in a structurally simple manner to the second unit unit.

In a particularly preferred embodiment of the high-pressure cleaning device according to the invention, the first support member as described above is plate-shaped, and the at least one second support member is formed as described above as a profile bar. The profile bar passes through the plate-shaped first support member to achieve a stable construction of the support means and is fixed thereto, for example by screwing. In a blind hole-like or sleeve-like receptacle on the support means, the profile bar engages positively, and the plate-shaped first support member rests on one or more support elements of the support means and covers a receiving space for the at least one second functional device.

It is advantageous if the carrying device comprises two second supporting parts, because this allows a more stable design of the carrying device. Conveniently, the two second support members are each formed in the form of the profile bar described above, and they each engage positively in a receptacle on the support means.

At their respective upper side, the two second support parts are preferably connected to one another by means of a connecting element forming a handle element for the high-pressure cleaning device. For example, a user may engage the handle element to move the high-pressure cleaner on a footprint. In addition, the user can attack on the handle member to release the support means from the support means and in this way to bring the first unit of equipment in distance to the second unit unit.

Preferably, the high-pressure cleaning device has a housing with at least one housing wall, which is held on the support means. By means of the housing, the functional means of the high-pressure cleaning device protected and give the high-pressure cleaner a more pleasing appearance. The mounting of the at least one housing wall on the support device and in particular on its second support part also simplifies the construction of the high-pressure cleaning device. The at least one housing wall can be brought as a component of the first device unit at a distance from the second unit.

It can be provided that the at least one housing wall forms a rear wall of the housing. This may also form parts of side walls of the housing, for example a part of a left side wall and / or a part of a right side wall of the housing.

It is advantageous if the support device forms a trough-shaped depression, in which the first device unit is partially arranged, wherein a recess enclosing the edge abuts against the support device side facing the at least one housing wall. Within the depression, the second device unit and in particular a section of the at least one housing wall facing the support device can be arranged. The at least one housing wall abuts against an edge of the depression. This makes it possible to form a positive connection between the edge and thus the depression and the at least one housing wall. The at least one housing wall and thus the first device unit can on this

Be fixed manner relative to the support means and thus the second unit.

Advantageously, the support means forms a chassis for the high-pressure cleaning device. As a result, the high-pressure cleaner can be given a simpler construction. On the chassis, e.g. Wheels be held for the high-pressure cleaner. On the chassis, the support device and thus the first unit can support. The at least one second functional device is advantageously arranged on an upper side of the chassis, so that it is easily accessible to a user after a release of the carrying device from the chassis.

A simple and inexpensive construction receives the support means when it is integrally formed and / or made of a plastic material.

In the high-pressure cleaning device according to the invention, the at least one second functional device is held on the support device. It has already been mentioned that the at least one second functional device is, for example, a pumping unit, a motor, a fan wheel, an impeller, a fuel pump and / or an electrical device of the high-pressure cleaning device. If the second device unit comprises more than just one functional device, this allows a more compact design of the high-pressure cleaning device. It is also possible that the second device unit comprises a functional device receptacle for a functional device.

Also to achieve a more compact construction of the high-pressure cleaning device, it is advantageous if the first unit unit via the heat exchanger In addition, at least one further functional device required for operation of the high-pressure cleaning device and / or a functional device receptacle for a further functional device comprises.

Conveniently, the first unit unit comprises a fuel tank for a required for the operation of the heat exchanger fuel and / or a hose reel for receiving a high-pressure hose and / or a handle member for moving the high-pressure cleaner. The fuel container is a functional device of the high-pressure cleaning device and the hose reel is a functional device receptacle for a high-pressure hose for operating the high-pressure cleaning device.

Preferably, all functional devices required for operation of the high-pressure cleaning device and / or functional device receptacles for functional devices are comprised by the first device unit and / or by the second device unit. This allows a particularly compact design of the high-pressure cleaning device, in which all functional devices or functional device recordings are part of the first device unit or the second unit unit.

Preferably, the high-pressure cleaning device has a connected via a liquid discharge line to the heat exchanger pump unit to increase the liquid pressure, wherein the liquid discharge line without tools with the pump unit and / or the heat exchanger is releasably connectable. This simplifies the maintenance of the high-pressure cleaning device. The first and the second unit units can be easily removed in this way in distance.

Furthermore, it is for the same reason advantageous if electrically active components of the high-pressure cleaning device via one or more electrical lines without tools are connected to each other. The electrically active components and the one or more electrical lines can be connected to each other for example by means of plug-and-socket connections. The connectors can be solved by the user without tools in a simple way for simplified maintenance of the high-pressure cleaner.

It is advantageous if the high-pressure cleaning device has a fuel pump for conveying required for the operation of the heat exchanger fuel, which is easy to connect to a fuel tank via a first fuel line and / or maintenance friendly with the heat exchanger is connected via a second fuel line. For this purpose, the first fuel line can be connected without tools to the fuel container and / or to the fuel pump, for example, and secured in each case by means of a clamp, clamp or the like. In a corresponding manner, the second fuel line to the fuel pump and / or the heat exchanger can be connected without tools and secured by a clamp, clamp or the like.

It has already been mentioned that the at least one second functional device can be designed as an impeller for generating a combustion air flow. The first device unit preferably has a housing for the fan wheel with a connection element for a combustion air duct connected to the heat exchanger, which can be connected without tools to the connection element. This allows the first and second device units to be spaced relative to each other in a more user-friendly manner. The connection element may be formed, for example, as a nozzle, which from the Combustion air duct is overlapped during operation of the high-pressure cleaning device or vice versa.

Figur 1:

eine perspektivische Ansicht eines erfindungsgemäßen Hochdruckreinigungsgerätes mit einem Unterteil sowie einem darauf aufgesetzten Oberteil umfassend ein Gehäuse mit einer Gehäusewand und einer Haube;

Figur 2:

eine weitere perspektivische Ansicht des Hochdruckreinigungsgerätes nach dem Entfernen der Haube und unter Auslassung zweier elektrischer Einrichtungen und eines Brennstoffbehälters, mit teilweise geschnittener Gehäusewand;

Figur 3:

eine weitere perspektivische Ansicht des Hochdruckreinigungsgerätes nach dem Entfernen der Haube mit teilweise geschnittener Gehäusewand;

Figur 4:

eine weitere perspektivische Ansicht des Hochdruckreinigungsgerätes;

Figur 5:

eine perspektivische Ansicht des Unterteils des Hochdruckreinigungsgerätes mit einer Abdeckung für Funktionseinrichtungen des Hochdruckreinigungsgerätes an der Oberseite und unter Auslassung zweier elektrischer Einrichtungen;

Figur 6:

eine Draufsicht auf das Unterteil aus Figur 5 nach dem Entfernen der Abdeckung und

Figur 7:

eine Seitenansicht des Hochdruckreinigungsgerätes nach dem Entfernen der Haube, wobei das Oberteil und das Unterteil einen Abstand zueinander einnehmen.

The following description of a preferred embodiment of the invention serves in conjunction with the drawings, the detailed explanation of the invention. Show it:

FIG. 1:

a perspective view of a high-pressure cleaning device according to the invention with a lower part and an upper part mounted thereon comprising a housing having a housing wall and a hood;

FIG. 2:

a further perspective view of the high-pressure cleaning device after removing the hood and omitting two electrical devices and a fuel tank, with partially cut housing wall;

FIG. 3:

a further perspective view of the high-pressure cleaning device after removing the hood with partially cut housing wall;

FIG. 4:

another perspective view of the high pressure cleaning device;

FIG. 5:

a perspective view of the lower part of the high-pressure cleaner with a cover for functional devices of the high-pressure cleaner at the top and omitting two electrical devices;

FIG. 6:

a plan view of the lower part FIG. 5 after removing the cover and

FIG. 7:

a side view of the high-pressure cleaning device after removing the hood, wherein the upper part and the lower part at a distance from each other.

A preferred embodiment of a high-pressure cleaner according to the invention is in the FIGS. 1 to 4 shown in perspective wholly or in part and there occupied by the reference numeral 10. It has a front 12, a back 13, a left side 14, a right side 15, a top 16 and a bottom 17.

The high-pressure cleaner 10 includes a in the FIGS. 6 and 7 partially illustrated lower part 18 and a lower part 18 attached to the upper part 19, whose structure will be discussed below. The lower part 18 has a one-piece, made of a plastic material chassis 20, on which in the transition areas from the left side 14 to the back 13 and the right side 15 to the back 13 two rotatable about a common axis of rotation 22 wheels 23 and 24 are held.

At the bottom 17, the chassis 20 near the front 12 forms two support elements in the form of support legs 26 and 27. About the support legs 26 and 27 and the wheels 23 and 24, the high-pressure cleaner 10 can stand on a footprint 28.

As in particular from the Figures 5 and 6 becomes clear, forms the chassis 20 approximately in the middle of the high-pressure cleaner 10, based on the longitudinal direction, in the transverse direction of a receptacle 30 from. The recording 30 extends from an edge 31 formed by the chassis 20 on the left side 14 to an edge 32 formed by the chassis 20 on the right side 15. In the receptacle 30, a structural unit 34 of the high-pressure cleaning device 10 is used.

The assembly 34 includes a motor 36 with a drive shaft 38 defining a drive shaft 40, a pump unit 42, a fan 44, an impeller 46 and a fuel pump 48. The configured as axial piston pump unit 42 is flanged to the engine designed as an electric motor 36 and forms with this one unit 50. In the axial direction, relative to the drive shaft 38, the pump unit 42 and the fuel pump 48 form a first end near the left side 14 and a second end near the right side 15. The motor 36, based on the Transverse direction of the high-pressure cleaning device 10, arranged in the center. He is axially upstream, based on the drive shaft 38, the fan 44 for generating a motor 36 cooling air flow. The impeller 44 is axially upstream of the impeller 46 for generating a combustion air flow. The pump unit 42, the fan 44, the impeller 46 and the fuel pump 48 are all driven by the drive shaft 40.

The motor 36, the pump unit 42, the fan 44, the impeller 46 and the fuel pump 48 each form a functional device of the high-pressure cleaner 10, which are required for its operation. The unit 50 as well as the assembly 34 in total can each be regarded as a functional device of the high-pressure cleaning device 10.

The assembly 34 is held on the chassis 20 such that the drive axle 38 is aligned horizontally and parallel to the axis of rotation 22. A cover 52, approximately in the form of an upside down and in the transverse direction of the High-pressure cleaner 10 extending gutter, the assembly 34 partially covers. In particular, the cover 52 covers the impeller 46, the impeller 44 and about half of the unit 50 (FIG. FIG. 5 ).

In addition to the already mentioned functional devices, the lower part 18 comprises two further functional devices, namely a first electrical device 54 and a second electrical device 56. The first electrical device 54 has an approximately cuboidal housing and is near the front side 12 in a receptacle provided for it 58 held ( Figures 3 and 7 ). The second electrical device 56 is releasably fixed on the top of the pump unit 42.

The chassis 20 of the lower part 18 forms a support means 60 for the already mentioned upper part 19, which cooperates with the support means 60 in a manner to be described.

Relative to the longitudinal direction of the high-pressure cleaning device 10, the chassis 20 forms between the cover 52 and the receptacle 58 two support elements 62 and 63 ( Figures 5 and 6 ). Based on the transverse direction of the high-pressure cleaning device 10, the support element 62 is approximately at the level of the center of the unit 50 and the support member 63 approximately at the level of the fan wheel 44. On their tops, the support members 62 and 63 form contact areas and in particular bearing areas 64 and 65 respectively.

Another, complicated formed support member 66 is the support member 62, relative to the drive shaft 38, opposite approximately at the height of the rotation axis 22, relative to the longitudinal direction of the high-pressure cleaner 10, formed by the chassis 20. It has several interconnected for stability reasons walls in the longitudinal and transverse direction of the high-pressure cleaner 10 on. The support member 66 forms at the top of a partially shoulder-shaped support portion 67.

A further support element 68 is, with respect to the longitudinal direction of the high-pressure cleaning device 10, formed on the drive axle 38 opposite side of the support member 63 from the chassis 20. The support member 68 comprises a plurality of walls connected to each other for stiffening, extending in a height direction and thus forms on its surface a latticed support portion 69 from. The support elements 62, 63, 66 and 68 are dimensioned so that their support areas 64, 65, 67 and 69 define a horizontal support plane for a still to be described supporting part of the high-pressure cleaning device 10.

Adjacent to the support element 66 in the direction of the rear side 13, the chassis 20 forms a receptacle 70 in the form of a sleeve 71 with a bottom 72. The sleeve 71 extends in a height direction and has an approximately angular cross-section. In a corresponding manner, the chassis 20 forms the support element 68 in the direction of the rear side 13 adjacent to a receptacle 73 in the form of a sleeve 74. The sleeve 74 also extends in a height direction, it has an approximately angular cross-section and is bounded on the bottom by a bottom 75.

The support member 68 and the sleeve 74 adjacent to the right side 15, the chassis 20 forms a shaft-shaped receptacle 76, which is bounded on the bottom side by a bottom wall 77.

In order to connect the upper part 19 in the assembled state of the high-pressure cleaning device 10 with the lower part 18, the upper part 19 has a support device 80 which is connected to the supporting device formed by the chassis 20 60 is detachably connectable in the manner described below. The support device 80 comprises a first support member 82 in the form of a planar support plate 84 and two second support members 86 and 87 in the form of two profile bars 88 and 89, for example made of metal.

The carrier plate 84 is in one piece and made of a metal, for example, and it rests horizontally on the support areas 64, 65, 67 and 69 of the support elements 62, 63, 66 and 68, respectively. On its side facing the front side 12, it has two bent tabs 90 and 91, which are fixed by means of two connecting elements 92 and 93, for example screws, releasably attached to the support elements 62 and 63 ( Figures 2 and 3 ). By means of a further, not shown in the drawing, the connecting plate 84 is also releasably connectable to the support member 66 at the shoulder-shaped support portion 67.

The profile bars 88 and 89 are, not shown in the drawing, positively arranged in the receptacles 70 and 73, 72 and 75, they are supported on the bottoms. They extend in a height direction. Above the receptacles 70 and 73 pass through the profile bars 88 and 89 near the back 13, the support plate 84 at openings 95 and 96 ( Figures 2 and 3 ). In the region of the openings 95 and 96, the profile bars 88 and 89 are fixed to the support plate 84, for example by screwing. This is not shown in the drawing.

At their ends facing away from the support means 60, the profile bars 88 and 89 are connected to each other by a connecting member 98. The connecting member 98 forms a handle for the high-pressure cleaning device 10 in the form of a handle element 100. A user can take the high-pressure cleaner 10 on the handle member 100 and the support points of the Tip wheels 23 and 24 on the footprint 28. This gives the possibility of moving the high-pressure cleaning device 10 on the installation surface 28 in a manner similar to a sack truck.

Below the connecting member 98, a functional device receptacle of the high-pressure cleaning device 10 in the form of a hose drum 102 is held on the profile bars 88 and 89. The hose drum 102 is used to store a high-pressure hose, can be discharged via the pressurized liquid from the high-pressure cleaner 10.

Another functional device of the high-pressure cleaning device 10 comprises the upper part 19 in the form of a heatable heat exchanger 104, which is held upright on the carrier plate 84. On its upper side facing away from the carrier plate 84, the heat exchanger is connected to a plate-shaped holding element 106, which is penetrated by the profile bars 88 and 89 at two openings. This is in FIG. 3 only one penetrated by the profile bar 88 opening 107 shown in the drawing. In the region of the opening 107 and the aperture, not shown, the profile bars 88 and 89 are fixedly connected to the holding element 106. This is also not shown in the drawing.

The heat exchanger 104 is used for heating a set of the pump unit 42 pressurized cleaning fluid, in particular water. With the pump unit 42 it is connected via a liquid discharge line 108 which is set releasably without tools on the pump unit 42. The liquid discharge line 108 could also be detachably connected to the heat exchanger 104 without tools. Via a second liquid discharge line 109, heated liquid can be dispensed by means of the heat exchanger 104, wherein the liquid discharge line 109 enters the hose drum 102 for connection of the already mentioned high-pressure hose.

Combustion air for the heat exchanger 104 is generated by means of the blower wheel 46 that can be driven by the motor 36 and supplied to the heat exchanger 104 via a combustion air duct 110. The combustion air duct 110 engages over a socket-shaped connection element 112 formed by the cover 52, from which it can be released without tools.

Electrically active components of the heat exchanger 104, such as a arranged at its top and not shown in the drawing thermostat, and an igniter 114 at its top for igniting a mixture of combustion air and fuel are not shown in the drawing with the first electrical device 54 electrical cables connected with plug connections. For this reason, these electrical leads can be loosened from the thermostat, the ignition device 114 and the electrical device 54 without tools.

On the profile bars 88 and 89, a housing wall 116 is held, which forms a housing 120 of the high-pressure cleaning device 10 together with a hood 118. The housing wall 116 is penetrated below the hose reel 102 and above the holding element 106 of the profile bars 88 and 89. The housing wall 116 is arranged on the rear side 13 and the rear side facing portions of the left side 14 and the right side 15. The hood 118 is disposed on the front side 12 and on the front-facing portions of the left side 14 and the right side 15, and it is detachably fixed to the lower part 18 and to the housing wall 116. An interior 122 bounded below the housing 120 she above and covers the above-mentioned functionalities of the high-pressure cleaner 10 from.

A lower edge 124 of the housing wall 16 engages positively in an edge 126, which is formed by the chassis 20 on the back 13 and on the left side 14 and the right side 15 above the wheels 23 and 24 respectively. The rim 126 includes a trough-shaped depression 128 formed by the chassis 20, from which, inter alia, the support elements 66 and 68 and the sleeves 71 and 74 protrude in the vertical direction (FIG. FIGS. 4 to 6 ). In this way, the upper part 19 engages with the housing wall 116 positively in the lower part 19 and in particular the chassis 20 a. About this positive connection of the upper part 19 with the lower part 18 also exists the already-mentioned positive connection by means of engaging in the sleeves 71 and 74 profile bars 88 and 89 and the frictional connection by means of the support plate 84 which on the support members 62, 63, 66 and 68 rests between the upper part 19 and the lower part 18th

On the housing wall 116, the heat exchanger 104 adjacent near the right side 15, a functional device of the high-pressure cleaning device 10 is held in the form of a fuel tank 130 for a required for the operation of the heat exchanger 104 fuel. The fuel container 130 is disposed in a space between the heat exchanger 104 and the housing 120, and forms a support member 132 ( FIG. 7 ), which engages positively in the shaft-shaped receptacle 76 and abuts against the bottom wall 77 thereof. As a result, an additional positive connection between the upper part 19 and the lower part 18 is formed.

The fuel tank 130 is connected to the fuel pump 48 by means of a first fuel line, not shown in the drawing, which is connected by means of a likewise not shown in the drawing second fuel line to the heat exchanger 104. In this way, the heat exchanger 104 fuel can be supplied using the fuel pump 48. The first fuel line and the second fuel line are detachably connected to the fuel tank 130 and the fuel pump 48 or the fuel pump 48 and the heat exchanger 104 in a manner which are easy to maintain and are respectively fixed thereto by a clamp, a clamp or the like.

The high-pressure cleaner 10 according to the invention, despite its compact design, in which the assembly 34 is installed below the heat exchanger 104, characterized by a high ease of maintenance. In order to expose the assembly 34, the user may remove the hood 118 of the housing 120 so that the high pressure cleaning device 10 is exposed to the user substantially as in FIG FIG. 3 shown. In order subsequently to release the upper part 19 forming a first appliance unit 134 of the high-pressure cleaning appliance 10 from the lower part 18 forming a second appliance unit 136 of the high-pressure cleaning appliance 10, it is possible to proceed as follows:

The user can release the connecting elements 92 and 93 which connect the support plate 84 to the support elements 62 and 63, as well as the third connection element, not shown in the drawing, with which the support plate 84 is connected to the support element 66. The liquid discharge line 108 can be detached from the pump unit 42 without tools. Furthermore, the electrical lines, not shown in the drawing can be solved without tools. The fuel lines, also not shown in the drawing, for example, from the fuel pump 48, the heat exchanger 104 or the fuel tank 130 can be solved.

Thereupon, the upper part 19 can be spaced apart relative to the lower part 18, for example by a user gripping the upper part 19 on the grip element 100. Thereby, the connection of the support means 80 is solved with the support means 60, in particular the non-positive connection of the support plate 84 with the support members 62, 63, 66 and 68 and also the positive connection of the profile bars 88 and 89 with the receptacles 70 and 73. In addition the positive connection of the lower edge 124 of the housing wall 116 is solved with the edge 126 on the chassis 20 and the positive connection of the support member 132 of the fuel tank 130 with the receptacle 76th

Releasing the combustion air duct 110 from the connection element 112 takes place automatically when spacing the upper part 19 relative to the lower part 18, because the combustion air duct 110 merely engages over the connection element 112.

Thereafter, the high-pressure cleaning device 10, for example, substantially in FIG. 7 shown relative arrangement of the upper part 19 and the lower part 18 to each other occupy. A formed below the support plate 84 and from this top side covered receiving space 138 is freely accessible to the user in this way. In the receiving space 138, the assembly 34 is partially covered by the cover 52. For a user, the base 18 is thus substantially as in FIG FIG. 5 shown, wherein the lower part 18 additionally the electrical devices 54 and 56 are arranged.

The user now freely accessible cover 52 can be solved by him in a simple way, so that he has access to the complete assembly 34, their individual components and thus to numerous functional devices of the high pressure cleaning device 10 has. At these functional devices, the user can perform the required maintenance.

In particular, a test operation of the high-pressure cleaning device 10 in the disassembled state is possible. For this purpose, the above-mentioned fuel lines, the electrical lines and a function of the liquid discharge line 108 engaging liquid discharge line or the same should be re-connected functionally. During test operation, the assembly 34 may be retained on the support 60 and the heat exchanger 104 on the support 80.

The exemplary procedure described above, in order to bring the upper part 19 away from the lower part 18, makes it clear that the high-pressure cleaning device 10 is characterized by high ease of maintenance. In the receiving space 138 below the support plate 84 arranged functional devices, in particular the assembly 34 and its components, can be achieved by a user in a simple manner after the support device 80 has been released from the support means 60.

In addition, the high-pressure cleaning device 10 is characterized in that it can be mounted again in a simple manner. For this purpose, for example, in the reverse order to proceed as described above for separating the upper part 19 and the lower part 18 from each other.

Claims (14)

1. High-pressure cleaning appliance (10) comprising a first functional device (104) required for operation in the form of a heatable heat exchanger (104) for heating a liquid that is dischargeable from the high pressure cleaning appliance (10), and at least one further, second functional device (34, 36, 42, 44, 46, 48, 50) required for operation which, relating to a positioning of the high-pressure cleaning appliance (10) with the heat exchanger (104) standing upright on a set-down surface (28), is arranged below the heat exchanger (104), wherein the high-pressure cleaning appliance (10) comprises a first appliance unit (134) having a carrying device (80) on which the heat exchanger (104) is held, and a second appliance unit (136) having a support device (60) on which the at least one second functional device (34, 36, 42, 44, 46, 48, 50) is held, wherein the carrying device (80) is releasably connectable to the support device (60) in a force-locked and/or positively-locked manner, wherein the carrying device (80) has a first carrying part (82) for holding the heat exchanger (104), said first carrying part (82) being releasably connectable to a plurality of support elements (62, 63, 66, 68) comprised by the support device (60), wherein the support elements (62, 63, 66, 68) in each case form an abutment face (64, 65, 67, 69) for the first carrying part (82) on their respective sides that face towards the first appliance unit (134), and wherein the first carrying part (82) has a plate-shaped configuration and forms a supporting surface for the heat exchanger (104) standing thereon.
2. High-pressure cleaning appliance in accordance with claim 1, characterized in that the at least one second functional device (34, 36, 42, 44, 46, 48, 50) is configured as a pump set (42) for increasing the liquid pressure, and/or as a motor (36) for the pump set (42), and, where applicable, as a fan (44) for generating a flow of air cooling the motor (36), and/or as a blower wheel (46) for generating a flow of combustion air for the heat exchanger (104), and/or as a fuel pump (48) for delivering a fuel for the heat exchanger (104), and/or as an electrical device (54, 56) of the high-pressure cleaning appliance (10).
3. High-pressure cleaning appliance in accordance with claim 1 or 2, characterized in that the at least one second functional device (34, 36, 42, 44, 46, 48, 50) or a cover (52) of the at least one second functional device (34, 36, 42, 44, 46, 48, 50) is freely accessible to a user after releasing the carrying device (80) from the support device (60).
4. High-pressure cleaning appliance in accordance with any one of the preceding claims, characterized in that a receiving space (138) for the at least one second functional device (34, 36, 42, 44, 46, 48, 50) is formed below the first carrying part (82).
5. High-pressure cleaning appliance in accordance with any one of the preceding claims, characterized in that the carrying device (80) has at least one second carrying part (86, 87) which is fixed to the first carrying part (82), and in that the support device (60) comprises at least one receptacle (70, 73) for the at least one second carrying part (86, 87).
6. High-pressure cleaning appliance in accordance with claim 5, characterized in that the at least one second carrying part (86, 87) engages in the at least one receptacle (70, 73) in a positively-locked manner.
7. High-pressure cleaning appliance in accordance with claim 5 or 6, characterized in that the at least one second carrying part (86, 87) is configured as a profile bar (88, 89) extending in a direction of height.
8. High-pressure cleaning appliance in accordance with any one of claims 5 to 7, characterized in that the carrying device (80) comprises two second carrying parts (86, 87).
9. High-pressure cleaning appliance in accordance with any one of the preceding claims, characterized in that the high-pressure cleaning appliance (10) includes a housing (120) having at least one housing wall (116) which is held on the carrying device (80).
10. High-pressure cleaning appliance in accordance with claim 9, characterized in that the support device (60) forms a trough-shaped depression (128) in which the first appliance unit (134) is partially arranged, wherein an edge (126) bordering the depression (128) abuts the side of the at least one housing wall (116) which faces towards the support device (60).
11. High-pressure cleaning appliance in accordance with any one of the preceding claims, characterized in that the first appliance unit (134) comprises, in addition to the heat exchanger (104), at least one further functional device (130) required for operation of the high-pressure cleaning appliance (10) and/or a functional device receptacle (102) for a further functional device.
12. High-pressure cleaning appliance in accordance with claim 11, characterized in that the first appliance unit (134) comprises a fuel container (130) for a fuel required for operation of the heat exchanger (104) and/or a hose reel (102) to receive a high-pressure hose.
13. High-pressure cleaning appliance in accordance with any one of the preceding claims, characterized in that the high-pressure cleaning appliance (10) comprises a pump set (42) for increasing the liquid pressure, said pump set (42) being connected to the heat exchanger (104) via a liquid discharge conduit (108), wherein the liquid discharge conduit (108) is releasably connectable to the pump set (42) and/or the heat exchanger (104) without the use of tools.
14. High-pressure cleaning appliance in accordance with any one of the preceding claims, characterized in that electrically operative components (54, 56, 114) of the high-pressure cleaning appliance (10) are interconnectable via one or more electrical lines without the use of tools.

Images