Pressure cleaning system
Patent Information
- Application Number
- EP2023793817
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-11-15
- Filing Date
- 2023-10-20
- Publication Date
- 2025-09-24
AI Technical Summary
The existing pressure cleaning systems are prone to tipping over during handling, especially when inserting or removing the pressure cleaning device from the container unit, which compromises stability and safety.
The pressure cleaning system is designed with an obliquely inclined first container side, increasing the distance between container sides in the insertion direction, thereby lowering the center of gravity and enhancing stability. Additionally, the pressure cleaning device can be inserted and removed from above, and the device outlet is positioned at a lower section for better accessibility and balance.
This design significantly reduces the risk of tipping and improves handling stability, allowing for easier operation and transport while maintaining versatility in using either internal or external liquid supplies.
Smart Images
Figure 1.1
Abstract
Description
[0001] PRESSURE CLEANING SYSTEM
[0002] The invention relates to a pressure cleaning system, comprising a pressure cleaning device with a pump, a motor for driving the pump, a device inlet for supplying cleaning fluid to be pressurized and a device outlet for dispensing pressurized cleaning fluid, and further comprising a container unit with a storage container for cleaning fluid to be pressurized and with a device receptacle into which the pressure cleaning device can be detachably inserted in an insertion direction, wherein the device receptacle is arranged on a first container side of the container unit and the pressure cleaning device protrudes from the device receptacle in the inserted position and the device inlet is in flow connection with the storage container in the inserted position of the pressure cleaning device.
[0003] Using such a pressure cleaning system, surfaces or objects can be cleaned without an external supply of cleaning fluid. The pressure cleaning device assumes its inserted position in the device receptacle of the container unit, allowing the cleaning fluid, for example water, held in the reservoir to be fed to the device inlet of the pressure cleaning device. The cleaning fluid from the pressure cleaning device can be pressurized using the pump. The pressure can be more than 10 bar, for example, 20 to 30 bar, in particular 25 bar. The pressurized cleaning fluid can be discharged from the pressure cleaning device via the device outlet. A fluid discharge line, for example, a pressure hose, can be connected to the device outlet.The cleaning fluid can be supplied to a fluid dispensing device, in particular a spray gun or a spray lance, via the fluid dispensing line. Alternatively, it is also possible to supply cleaning fluid to the pressure cleaning device via an external fluid supply line, for example, a suction hose or a garden hose. For this purpose, the pressure cleaning device can be removed from the container unit in the opposite direction to the insertion direction of the device holder. The device inlet of the pressure cleaning device is then freely accessible and can be connected to the external fluid supply line.
[0004] The pressure cleaning device can therefore be operated both with and without the container unit, covering a wide range of applications.
[0005] A pressure cleaning system of the type mentioned above is known from document CN 203591966 U. The pressure cleaning system comprises a pressure cleaning device with a motor-driven pump, a device inlet and a device outlet, as well as a container unit with a reservoir for pressurized cleaning fluid and a device receptacle arranged on a first container side of the container unit. The pressure cleaning device can be detachably inserted into a device receptacle of the container unit, forming a flow connection between the reservoir and the device inlet of the pressure cleaning device. When handling the pressure cleaning system, in particular when inserting the pressure cleaning device into the device receptacle of the container unit and when removing the pressure cleaning device from the device receptacle of the container unit, there is a risk that the container unit may tip over.
[0006] The object of the present invention is therefore to further develop a pressure cleaning system of the type mentioned at the outset in such a way that it has greater stability.
[0007] This object is achieved according to the invention in a pressure cleaning system of the generic type in that the first container side of the container unit is inclined obliquely in the direction of a second container side of the container unit opposite the first container side, wherein the distance between the first container side and the second container side increases in the insertion direction, wherein the insertion direction runs vertically from top to bottom in an upright position of use of the pressure cleaning system. With such a configuration, a low center of gravity relative to the upright position of use and thus high stability of the pressure cleaning system can be achieved. Furthermore, relative to the upright position of use of the pressure cleaning system, the pressure cleaning device can be inserted into the device receptacle of the container unit from above and removed from the device receptacle of the container unit upwards. The risk of tipping can thus be kept to a minimum.
[0008] For particularly easy handling, the pressure cleaning device preferably has a longitudinal axis which is aligned parallel to the insertion direction in the inserted position of the pressure cleaning device.
[0009] For a compact design of the pressure cleaning system, it is advantageous if the container unit has a substantially triangular shape in a side view, preferably a triangular shape with rounded corners.
[0010] It is advantageous if the device outlet is located in a portion of the pressure cleaning device that protrudes from the device receptacle of the container unit when the device is in use. This allows for good accessibility to the device outlet. A fluid discharge line, such as a pressure hose, can be connected to the device outlet.
[0011] For handling purposes, it is advantageous if the pressure cleaning device, with respect to the inserted position, has a device front facing away from the second container side of the container unit, which protrudes from the device receptacle in the inserted position of the pressure cleaning device, with the device outlet being arranged at the device front. Preferably, the device front of the pressure cleaning device has a lower section and an upper section relative to the upright use position of the pressure cleaning system, with the device outlet being arranged at the lower section. As already mentioned, a liquid discharge line can be connected to the device outlet. If a tensile load is applied to the liquid discharge line, a tipping moment can act on the pressure cleaning system. The risk of tipping can be minimized by arranging the device outlet at the lower section, close to the center of gravity of the pressure cleaning system.
[0012] The pressure cleaning device can be provided with at least one accessory holder, which, when the pressure cleaning device is in use, is arranged on the area of the pressure cleaning device that protrudes from the device receptacle of the container unit. Accessories, such as a spray gun or a spray lance, can be removably secured to the at least one accessory holder. This allows the operator easy access to the accessories.
[0013] The pressure cleaning device preferably has a first longitudinal side and a second longitudinal side opposite the first longitudinal side. The two longitudinal sides each have a side section that protrudes from the device receptacle when the pressure cleaning device is in the inserted position. At least one accessory holder is arranged on at least one side section. This allows for particularly easy access to the at least one accessory holder.
[0014] It is advantageous if a first accessory holder is arranged on the side section of the first longitudinal side of the pressure cleaning device that protrudes from the device receptacle when the pressure cleaning device is in use, and if a second accessory holder is arranged on the side section of the second longitudinal side of the pressure cleaning device that protrudes from the device receptacle when the pressure cleaning device is in use. This allows the arrangement of multiple accessories, for example, a spray gun and a spray lance.
[0015] It is advantageous if the pressure cleaning device has a handle that is located on the part of the pressure cleaning device that protrudes from the device holder of the container unit when the pressure cleaning device is in use. The pressure cleaning device can be grasped by the handle and easily inserted into or removed from the device holder of the container unit.
[0016] For particularly easy operation, it is advantageous if the handle is located on the front of the pressure cleaning device.
[0017] In an advantageous embodiment of the invention, the pressure cleaning device has a switch for turning the pressure cleaning device on and off. The switch is located above the handle when the pressure cleaning system is in an upright position. The switch is thus easily accessible, allowing the pressure cleaning device to be easily turned on and off.
[0018] It is advantageous if the pressure cleaning device has a battery to power the motor. The battery can be removably inserted into a battery receptacle of the pressure cleaning device, and the battery receptacle is located in the area of the pressure cleaning device that protrudes from the device receptacle of the container unit when the pressure cleaning device is in use. This provides easy access to the battery for the operator. Changing the battery is therefore very simple.
[0019] The battery is preferably rechargeable. It is advantageous if the battery receptacle is located on the top of the pressure cleaning device, facing upwards when the pressure cleaning system is in the upright operating position. This allows the operator particularly convenient access to the battery.
[0020] In order to facilitate transport of the pressure cleaning system, the container unit advantageously has two wheels mounted so as to rotate about a common axis of rotation for moving the pressure cleaning system.
[0021] For particularly convenient transport of the pressure cleaning system, it is advantageous if the container unit has a push handle that can be moved back and forth between a retracted position and an extended position. The push handle is U-shaped and has two legs that are connected to one another via a web, with each leg being slidably mounted on a guide channel in the container unit. If the pressure cleaning system is to be transported, the push handle can be moved from its retracted position to its extended position. The operator can grasp the web and move the pressure cleaning system using the wheels. At the point of use or during storage, the push handle can be moved from the extended position back into the retracted position, so that the pressure cleaning system requires little space.
[0022] Conveniently, the container unit has a container base with a recess formed into it. This design allows the operator to easily lift the pressure cleaning system by grasping the bar of the push bar in its retracted position with one hand and reaching into the recess with the other hand.
[0023] The container unit preferably has a storage space on its second container side for storing accessories. A pressure hose, for example, can be stowed in the storage space. For filling with cleaning fluid, the storage container, in an advantageous embodiment, has a filler neck that can be closed liquid-tight by means of a lid, wherein a vent valve is integrated into the lid. If cleaning fluid is withdrawn from the storage container during operation of the pressure cleaning system, for example via a fluid discharge line connected to the device outlet, a vacuum is created in the storage container. As a result of the pressure difference between the interior of the storage container and the environment, the vent valve opens so that air can flow into the storage container.When no cleaning fluid is drawn from the reservoir, there is no pressure difference between the reservoir's interior and the ambient air. As a result, the vent valve is closed, preventing any cleaning fluid from escaping from the reservoir, for example, during transport.
[0024] The ventilation valve is preferably made of an elastomer material.
[0025] Conveniently, the lid is designed as a screw cap.
[0026] For easy assembly, it is advantageous if the lid has a recess defined by a base facing the reservoir. The base has an opening in which the vent valve is located. The dimensions of the opening and the vent valve are coordinated to create a slight compression, which holds the vent valve in the opening.
[0027] Conveniently, the recess can be closed with a cap. This protects the ventilation valve from external influences, such as dirt.
[0028] The following description of a preferred embodiment of the invention serves to provide further explanation in conjunction with the drawings. They show: Figure 1: a perspective view of a pressure cleaning system with a pressure cleaning device and a container unit, viewed diagonally from the front, with the pressure cleaning device inserted into a device receptacle of the container unit;
[0029] Figure 2: a perspective view of the pressure cleaning system obliquely from the front, with the pressure cleaning device in a position at a distance from the device holder;
[0030] Figure 3: a perspective view of the pressure cleaning system obliquely from the rear;
[0031] Figure 4: a front view of the pressure cleaning system, with a battery inserted into a battery receptacle of the pressure cleaning device;
[0032] Figure 5: a sectional view of the pressure cleaning system taken along line 5-5 of Figure 4;
[0033] Figure 6: a sectional view of the container unit according to Figure 5, with wheels arranged on the container unit hidden;
[0034] Figure 7: a plan view of a lid which seals a filler neck arranged on the container unit in a liquid-tight manner;
[0035] Figure 8: a sectional view of the lid taken along line 8-8 of Figure 7.
[0036] Figures 1 to 8 schematically show a preferred embodiment of a pressure cleaning system according to the invention, which is designated overall by the reference numeral 10.
[0037] The pressure cleaning system 10 comprises a pressure cleaning device 12 and a container unit 14. The pressure cleaning device 12 can be inserted into a device receptacle 18 of the container unit 14 in an insertion direction 16 and can be removed from the device receptacle 18 as needed. In the upright use position of the pressure cleaning system 10 shown in Figures 1 to 6, the insertion direction 16 runs vertically from top to bottom. A longitudinal axis 20 of the pressure cleaning device 12 is aligned parallel to the insertion direction 16 when the pressure cleaning device 12 is inserted into the device receptacle 18 of the container unit 14.
[0038] The pressure cleaning device 12 comprises a motor 22 and a pump 24. The pump 24 is in fluid communication with a device inlet 26 of the pressure cleaning device 12, via which cleaning fluid to be pressurized can be supplied to the pump 24. The pump 24 pressurizes the cleaning fluid. The pressurized cleaning fluid can be discharged from the pressure cleaning device 12 via a device outlet 30 that is in fluid communication with the pump 24. A fluid discharge line, for example a pressure hose, which is known per se and is therefore not shown in the drawing for the sake of clarity, can be connected to the device outlet 30.
[0039] The container unit 14 comprises a reservoir 32 for pressurized cleaning fluid. A filler neck 36, which can be closed liquid-tight by a lid 34 with a seal 34a interposed between it, is arranged on the reservoir 32 for filling with cleaning fluid. A recess 33 is formed in the lid 34 and is delimited in the direction of the reservoir 32 by a base 33a. The base 33a has an opening 33b. A vent valve 35 for venting the reservoir 32 is arranged in the opening 33b. The vent valve 35 has two flexible lips 35a, 35b. When cleaning fluid is withdrawn during operation of the pressure cleaning system 10, a vacuum is created in the reservoir 32. As a result of the resulting pressure difference with the environment, the ventilation valve 35 opens, with the flexible lips 35a, 35b taking a distance from each other.The pressure difference is equalized by the air flowing into the reservoir 32. Once pressure equalization is achieved, the vent valve 35 closes. The flexible lips 35a, 35b then rest against each other. This is particularly evident in Figure 8. The recess 33 can be closed by a cover cap 37, thus protecting the vent valve 35 from external influences, such as dirt.
[0040] The container unit 14 has a first container side 38 and a second container side 40 opposite the first container side 38. The first container side 38 is inclined obliquely toward the second container side 40. The distance between the first container side 38 and the second container side 40 increases in the insertion direction 16. The device receptacle 18 for the pressure cleaning device 12 is arranged on the first container side 38 of the container unit 14. In the inserted position of the pressure cleaning device 12, a region 42 of the pressure cleaning device 12 protrudes from the device receptacle 18 of the container unit 14.
[0041] The container unit 14 further includes a first wheel 44 and a second wheel 46, as well as a first base 48 and a second base 50. The wheels 44, 46 are mounted for rotation about a common axis of rotation 47. In the upright position, the pressure cleaning system 10, with the wheels 44, 46 and the bases 48, 50, rests on a base not shown in the drawing.
[0042] The container unit 14 has a push handle 52 that is U-shaped. The push handle 52 has a first leg 54 and a second leg 56, which are connected to one another via a web 58. The push handle 52 can be moved back and forth between a retracted position shown in Figures 1 to 6 and an extended position not shown in the drawing. The first leg 54 is slidably mounted in a first guide channel 60, and the second leg 56 is slidably mounted in a second guide channel 62. To move the pressure cleaning system 10, an operator can move the push handle 52 from its retracted position to its extended position and tilt the pressure cleaning system 10 about the rotation axis 47 so that the feet 48, 50 lift off the base.The operator can now transport the pressure cleaning system 10 by moving it on the wheels 44, 46, for example, he can push the pressure cleaning system 10 in front of him like a sack barrow or pull it behind him.
[0043] A trough 66 is arranged on the underside 64 of the storage container of the container unit 14, facing the base. To lift the pressure cleaning system 10, the operator can grasp the web 58 of the push bar 52 in its retracted position with one hand and reach into the trough 66 with the other hand.
[0044] On its second container side 40, the container unit 14 has a storage space 68. The storage space 68 can be used to store accessories.
[0045] For the detachable fastening of the pressure cleaning device 12 in the device holder 18 of the container unit 14, the pressure cleaning system 10 has a fastening device 70.
[0046] The pressure cleaning device 12 has a device front 76, which, in the inserted position of the pressure cleaning device 12, faces away from the second container side 40 of the container unit 14, and a device rear 78 opposite the device front 76. The device front 76 has a lower section 72 and an upper section 74 relative to the upright use position of the pressure cleaning system 10. The device front 76 and the device rear 78 are connected to one another via a first longitudinal side 80 and a second longitudinal side 82. In the inserted position of the pressure cleaning device 12, the first longitudinal side 80 and the second longitudinal side 82 each have a side section 81, 83 protruding from the device receptacle 18 of the container unit 14. Furthermore, the pressure cleaning device 12 has an upper side 84 directed upwards in the upright position of use and a lower side 86 directed downwards.
[0047] The device inlet 26 is located on the underside 86 of the pressure cleaning device 12. Adjoining the device inlet 26 is a connection element 88 of the pressure cleaning device 12, which can be detachably connected to a fluid supply line 89 of the container unit 14 that extends into the reservoir 32. For this purpose, the connection element 88, in the inserted position of the pressure cleaning device 12, extends into a connection receiving element 90 that is arranged on a base 92 of the device receptacle 18 of the container unit 14 and is in fluid communication with the fluid supply line 89.
[0048] The device outlet 30 is arranged on the area 42, which protrudes from the device receptacle 18 in the inserted position of the pressure cleaning device 12, on the lower section 72 of the front side 76 of the pressure cleaning device 12. For example, a pressure hose can be connected to the device outlet 30, via which pressurized cleaning fluid can be supplied to a fluid dispensing device known per se and therefore not shown for reasons of clarity, such as a spray gun or a spray lance.
[0049] A first accessory holder 94 is arranged on the side section 81 of the first longitudinal side 80 of the pressure cleaning device 12, which protrudes in the inserted position of the pressure cleaning device 12, and a second accessory holder 95 is arranged on the side section 83 of the second longitudinal side 82 of the pressure cleaning device 12, which protrudes in the inserted position of the pressure cleaning device 12. Accessories, such as a spray lance and / or a spray gun, can be releasably secured to the accessory holders 94, 95. In the inserted position of the pressure cleaning device 12, a first recess 96 is arranged below the first accessory holder 94 on the first container side 38 of the container unit 14, and a second recess 97 is arranged below the second accessory holder 95. The accessories arranged on the accessory holders 94, 95 can be supported on the bottoms 96a, 97a of the recesses 96, 97, respectively.
[0050] A battery 98 for supplying power to the motor 22 can be removably inserted into a battery receptacle 100. The battery receptacle 100 is arranged on the top side 84 of the pressure cleaning device 12.
[0051] The pressure cleaning device 12 has a handle 102, which is arranged on the area 42 on the front side 76 of the pressure cleaning device 12 that protrudes in the inserted position of the pressure cleaning device 12. To insert the pressure cleaning device 12 into the device receptacle 18 of the container unit 14, the operator can grasp the handle 102 and insert the pressure cleaning device 12 in the insertion direction 16 into the device receptacle 18 of the container unit 14. To remove the pressure cleaning device 12 from the device receptacle 18 of the container unit 14, the operator can grasp the handle and release the pressure cleaning device 12 from the device receptacle 18 of the container unit 14 in the opposite direction to the insertion direction 16. In addition, the pressure cleaning device 12 can be grasped and transported by the handle 102 in its released position.
[0052] With respect to the upright position of use of the pressure cleaning system 10, a switch 104 for switching the pressure cleaning device 12 on and off is arranged above the handle 102.
[0053] To operate the pressure cleaning system 10, the operator can first fill cleaning fluid, for example water, into the storage container 32 via the filler neck 36. To move the pressure cleaning system 10 to a location, the operator can move the push handle 52 from its retracted position to its extended position, then tilt the pressure cleaning system 10 about the rotation axis 47 so that the feet 48, 50 lift off the base, and pull the pressure cleaning system 10 behind them on the wheels 44, 46, for example. Once at the location, the operator can transfer the pressure cleaning system 10 to its upright position of use. The operator can now connect a pressure hose, for example, stored in the storage space 68, to the device outlet 30. Accessories such as a spray gun and a spray lance, which can be arranged on the accessory holders 94, 95 for transport, can be connected to the pressure hose.For cleaning surfaces or objects in particular, the cleaning fluid is fed from the reservoir 32 via the fluid supply line 89 through the device inlet 26 to the pump 24. The pump 24 pressurizes the cleaning fluid. The cleaning fluid can be dispensed onto the surface or object to be cleaned via the device outlet 30 and the connected pressure hose and a fluid dispensing device. Cleaning can continue as long as there is cleaning fluid in the reservoir 32. If further cleaning is required, cleaning fluid can be refilled into the reservoir 32.
[0054] However, it is also possible to operate the pressure cleaning device 12 with an external supply of cleaning fluid. To do so, the operator can transfer the pressure cleaning device 12 from its inserted position to its released position by grasping the pressure cleaning device 12 at the handle 102 and removing it from the device receptacle 18 of the container unit 14 in the opposite direction to the insertion direction 16. An external fluid supply line, for example a suction hose or a garden hose, can now be connected to the device inlet 26. The cleaning fluid supplied to the pump 24 is pressurized and can in turn be delivered onto a surface to be cleaned or onto an object to be cleaned via a pressure hose connected to the device outlet 30 and a fluid delivery device connected to the pressure hose.
Claims
PATENT CLAIMS Pressure cleaning system, comprising a pressure cleaning device (12) with a pump (24), a motor (22) for driving the pump (24), a device inlet (26) for supplying cleaning fluid to be pressurized, and a device outlet (30) for dispensing pressurized cleaning fluid, and further comprising a container unit (14) with a reservoir (32) for cleaning fluid to be pressurized and with a device receptacle (18) into which the pressure cleaning device (12) can be detachably inserted in an insertion direction (16), wherein the device receptacle (18) is arranged on a first container side (38) of the container unit (14), and the pressure cleaning device (12) protrudes from the device receptacle (18) in its inserted position, and the device inlet (26) is in flow connection with the reservoir (32) in the inserted position of the pressure cleaning device (12), characterized in thatthat the first container side (38) of the container unit (14) is inclined obliquely toward a second container side (40) of the container unit (14) opposite the first container side (38), wherein the distance between the first container side (38) and the second container side (40) increases in the insertion direction (16), and wherein the insertion direction (16) runs vertically from top to bottom in an upright use position of the pressure cleaning system (10). The pressure cleaning system according to claim 1, characterized in that the pressure cleaning device (12) has a device longitudinal axis (20) which, in the inserted position of the pressure cleaning device (12), is aligned parallel to the insertion direction (16). The pressure cleaning system according to one of claims 1 or 2, characterized in that the container unit (14) has a substantially triangular shape in a side view. Pressure cleaning system according to one of claims 1 to 3, characterized in that the device outlet (30) is arranged on a region (42) of the pressure cleaning device (12) that, in the inserted position of the pressure cleaning device (12), protrudes from the device receptacle (18) of the container unit (14). Pressure cleaning system according to claim 4, characterized in that the pressure cleaning device (12), with respect to the inserted position, has a device front side (76) facing away from the second container side (40) of the container unit (14), which protrudes from the device receptacle (18) in the inserted position of the pressure cleaning device (12), wherein the device outlet (30) is arranged on the device front side (76).Pressure cleaning system according to claim 5, characterized in that the device front (76) has a lower section (72) and an upper section (74) relative to the upright use position of the pressure cleaning system (10), wherein the device outlet (30) is arranged on the lower section (72). Pressure cleaning system according to one of the preceding claims, characterized in that the pressure cleaning device (12) has at least one accessory holder (94, 95) which, in the inserted position of the pressure cleaning device (12), is arranged on the region (42) of the pressure cleaning device (12) protruding from the device receptacle (18) of the container unit (14).Pressure cleaning system according to claim 7, characterized in that the pressure cleaning device (12) has a first longitudinal side (80) and a second longitudinal side (82) opposite thereto, wherein the two longitudinal sides (80, 82) each have a side section (81, 83) which, in the inserted position of the pressure cleaning device. (12) protrudes from the device receptacle (18), wherein at least one accessory holder (94, 96) is arranged on at least one side section (81, 83). Pressure cleaning system according to claim 8, characterized in that a first accessory holder (94) is arranged on the side section (81) of the first longitudinal side (80) of the pressure cleaning device (12) protruding from the device receptacle (18) in the inserted position of the pressure cleaning device (12), and in that a second accessory holder (95) is arranged on the side section (83) of the second longitudinal side (82) of the pressure cleaning device (12) protruding from the device receptacle (18) in the inserted position of the pressure cleaning device (12).Pressure cleaning system according to one of the preceding claims, characterized in that the pressure cleaning device (12) has a handle (102) arranged on the region (42) of the pressure cleaning device (12) that protrudes from the device receptacle (18) of the container unit (14) in the inserted position of the pressure cleaning device (12). Pressure cleaning system according to claim 10 in conjunction with claim 5, characterized in that the handle (102) is arranged on the front side (76) of the pressure cleaning device (12). Pressure cleaning system according to claim 10 or 11, characterized in that the pressure cleaning device (12) has a switch (104) for switching the pressure cleaning device (12) on and off, wherein the switch (104) is arranged above the handle (102) with respect to the upright use position of the pressure cleaning system (10). Pressure cleaning system according to one of the preceding claims, characterized in that the pressure cleaning device (12) has a battery (98) for supplying power to the motor (22), wherein the battery (98) is detachably insertable into a battery receptacle (100) of the pressure cleaning device (12), and the battery receptacle (100) is arranged on the region (42) of the pressure cleaning device (12) that protrudes from the device receptacle (18) of the container unit (14) in the inserted position of the pressure cleaning device (12). Pressure cleaning system according to claim 13, characterized in that the battery receptacle (100) is arranged on a top side (84) of the pressure cleaning device (12) that is directed upwards in the upright use position of the pressure cleaning system (10).Pressure cleaning system according to one of the preceding claims, characterized in that the container unit (14) has two wheels (44, 46) rotatably mounted about a common axis of rotation (47) for moving the pressure cleaning system (10). Pressure cleaning system according to one of the preceding claims, characterized in that the container unit (14) has a push bar (52), wherein the push bar (52) is displaceable back and forth between a retracted position and an extended position, and wherein the push bar (52) is U-shaped and has two legs (54, 56) that are connected to one another via a web (58), wherein each leg (54, 56) is displaceably mounted in a guide channel (60, 62) of the container unit (14). Pressure cleaning system according to one of the preceding claims, characterized in that the container unit (14) has a container bottom (64) into which a trough (66) is formed. Pressure cleaning system according to one of the preceding claims, characterized in that the container unit (14) has a storage space (68) for stowing accessories on its second container side (40). Pressure cleaning system according to one of the preceding claims, characterized in that the container unit (14) has a filler neck (36) for filling the storage container (32) with cleaning fluid, wherein the filler neck (36) can be closed in a liquid-tight manner by means of a lid (34), and wherein a vent valve (35) is integrated into the lid (34). Pressure cleaning system according to claim 19, characterized in that the lid (34) has a recess (33) which is delimited by a base (33a) in the direction of the storage container (32), wherein the base (33a) has an opening (33b) in which the vent valve (35) is arranged.Pressure cleaning system according to claim 20, characterized in that the recess (33) can be closed with a cover cap (37).