Pressure cleaning device

Abstract

The invention relates to a pressure cleaning device (10) having a pump (42) with an electrically drivable pump device (46) with an inlet (52) and an outlet (55), and having a coupling part (64) for coupling a liquid supply line for providing a cleaning liquid, the coupling part being fluidically connected to the inlet via a first flow path, and the coupling part being fluidically connected to the outlet via a second flow path. The pressure cleaning device further has a first flow path bypassing the pump device and a first output line (62) coupled to the outlet, and the pressure cleaning device further has a second flow path bypassing the pump device, a second output line (98) coupled to the second flow path. In order to improve the pressure cleaning device such that it has a more compact design and an easier handling, it is proposed according to the invention that a first valve device (84) is arranged in the first flow path in order to selectively release and interrupt the first flow path and that the second flow path is branched off from the first flow path downstream of the first valve device (84).

Description

Technical Field

[0001] The invention relates to a pressure cleaning device, which has a pump, which has an electrically drivable pump device for conveying a cleaning liquid, the pump device having an inlet and an outlet, and the pressure cleaning device has a coupling part for connecting a liquid delivery line for providing the cleaning liquid, wherein the coupling part is in flow connection with the inlet of the pump device via a first flow path, and the first outlet line is connected to the outlet of the pump device, and wherein the pressure cleaning device has a second flow path bypassing the pump device, and a second outlet line is connected to the second flow path. Background Art

[0002] By means of this pressure cleaning device, cleaning liquid, preferably water, can be transported by means of a pump having an electrically driven pump device and directed to the surface to be cleaned under higher pressure. For example, the pressure can be greater than 10 bar, in particular 15 bar to 30 bar, so as to loosen dirt from the surface to be cleaned. The pressure cleaning device has a coupling part to which a liquid delivery line can be connected to provide the cleaning liquid. The coupling part is in flow connection with the inlet of the pump device via a first flow path, and the cleaning liquid can be delivered to the pump device through the inlet. The cleaning liquid can be delivered to the first output line through the outlet of the pump device under higher pressure for outputting the cleaning liquid delivered by the pump device.

[0003] The delivery volume of the pump device can be, for example, 100 l / h to 200 l / h. This delivery volume of the cleaning liquid delivered with a higher pressure is sufficient to loosen the dirt particles from the surface to be cleaned. However, in some cases, the delivery volume is not enough to subsequently completely rinse the loosened dirt particles from the surface to be cleaned. Although the following pressure cleaning equipment is also known, the pump device of the pressure cleaning equipment has a higher delivery volume, so that a good rinsing effect can be achieved, but this is related to the higher energy consumption and higher weight of the pressure cleaning equipment. Therefore, in US 7,854,398 B2, a pressure cleaning equipment is proposed, wherein, in addition to the first flow path, a second flow path is also used, and the cleaning liquid can be delivered to the pump device through the first flow path to increase the pressure, so that the dirt particles can be loosened from the surface, and the cleaning liquid can be delivered to the second output line through the second flow path while bypassing the pump device, and the cleaning liquid can be directed to the surface to be cleaned through the second output line with a relatively small pressure, so as to rinse the dirt particles from the surface. However, the known pressure cleaning equipment has a large structural size and is not very easy to operate in its processing. Summary of the invention

[0004] It is therefore an object of the present invention to improve a pressure cleaning device of the type mentioned in the introduction so that it has a more compact construction and is easier to handle.

[0005] According to the invention, this object is achieved in a pressure cleaning device of the generic type in that a first valve device is arranged in the first flow path for selectively opening and interrupting the first flow path, and a second flow path branches off from the first flow path downstream of the first valve device.

[0006] In the pressure cleaning device according to the present invention, a first valve device is arranged in the first flow path connecting the coupling part to the inlet of the pump device, and the first flow path can be selectively released and interrupted by the first valve device. When the first flow path is released, the cleaning liquid can be delivered to the pump device, and the cleaning liquid can be output through the first output line at a higher pressure. When the first flow path is interrupted, the delivery of the cleaning liquid to the pump device is interrupted. In the downstream of the first valve device, that is, in the area between the first valve device and the inlet of the pump device, the second flow path bypassing the pump device is branched from the first flow path, and the cleaning liquid (whose pressure is not increased) is delivered to the second output line through the second flow path, and can be output through the second output line. Therefore, the output of the cleaning liquid through the first output line and the output of the cleaning liquid through the second output line can be controlled by means of the first valve device. This can achieve easy-to-operate handling and a compact design of the pressure cleaning device.

[0007] Advantageously, the first flow path and the second flow path are integrated into the pump.

[0008] In a preferred embodiment of the pressure cleaning device according to the invention, a particularly compact embodiment is achieved in that the first outlet line and the second outlet line are integrated into the pump.

[0009] The first valve device is advantageously coupled to a first manually operable operating element, which enables an operator to manually control the output of the cleaning fluid via the first outlet line and the second outlet line by manually operating the first operating element.

[0010] Advantageously, the first valve device has a first closing body which is mechanically coupled to the first operating element and can be moved back and forth between a closed position and an open position.

[0011] In an advantageous design of the present invention, a particularly simple handling is achieved in that the first closing body can be moved from the closed position to the open position by the first operating element against the spring elastic restoring force. The operator can move the first closing body from its closed position to its open position against the spring elastic restoring force by operating the first operating element, and thereby enable the cleaning fluid to be discharged through the two outlet lines. If the operator stops operating the first operating element, the first closing body automatically moves back to its closed position under the action of the spring elastic restoring force, so that the cleaning fluid can no longer be discharged through the two outlet lines.

[0012] Advantageously, the pressure cleaning device according to the invention is designed as a handheld pressure cleaning device and has a handle that can be gripped by an operator. Advantageously, the first operating element is arranged on the handle. This allows the operator to hold the handle with one hand in order to guide the pressure cleaning device over the surface to be cleaned and, at the same time, to manipulate the first operating element with the same hand in order to control the discharge of cleaning fluid through the first discharge line and the second discharge line.

[0013] The handle is preferably designed in the manner of a pistol grip. This enables particularly easy handling of the pressure cleaning device.

[0014] In a preferred design of the present invention, the first operating element is designed as a trigger lever.

[0015] Advantageously, the second valve device is arranged in the second flow path for selectively releasing and interrupting the second flow path, wherein the second valve device is coupled to a second operating element that can be manually operated. The second valve device makes it possible to prohibit the output of the cleaning liquid via the second output line, while outputting the cleaning liquid via the first output line. For this reason, the operator can release the first flow path through the first valve device and interrupt the second flow path through the second valve device. This allows the cleaning liquid to be directed to the surface to be cleaned with a higher pressure and a maximum pump device delivery amount in order to peel off the dirt particles, so that the second flow path is released and the dirt particles can be washed away from the surface when the cleaning liquid is output through the first output line and the second output line at the same time. If the cleaning liquid should no longer be output to the surface, then for the operator, only the first operating element needs to be operated so as to interrupt the first flow path by means of the first valve device, and the operator does not need to operate the second operating element coupled to the second valve device. This facilitates the operator to interrupt the output of the cleaning liquid, especially for a short period of time, because only the first operating element needs to be operated again in order to continue to output the cleaning liquid subsequently.

[0016] In an advantageous design of the pressure cleaning device according to the invention, the second valve device has a second closing body, which is mechanically coupled to the second operating element and can be moved back and forth between an open position and a closed position by means of the second operating element, wherein the second closing body maintains its current position without actuating the second operating element. In this design of the invention, the operator can selectively release or interrupt the second flow path by selectively moving the second closing body to an open position or a closed position by means of the second operating element. Without actuating the second operating element, the closing body maintains its current position, i.e., it remains in its open or closed position. For example, this allows the operator to move the second closing body to its open position by means of the second operating element, and then to continuously and briefly output the cleaning fluid multiple times through two output lines by means of continuous short actuation of the first operating element, without the operator having to actuate the second operating element.

[0017] Advantageously, the second closing body is rotatable about a rotation axis and has a through hole oriented perpendicularly to the rotation axis, which through hole is oriented in alignment with a through channel arranged in the second flow path in a first rotation position of the second closing body and is oriented perpendicularly to the through channel in a second rotation position, wherein the closing body can be moved back and forth between the first rotation position and the second rotation position by a second operating element.

[0018] Advantageously, the second operating element is designed as a rotary knob, which can be rotated about the rotation axis of the second closing body. This allows particularly easy handling.

[0019] The second closing element is advantageously designed as a valve rod which is mounted so as to be rotatable about an axis of rotation.

[0020] As mentioned before, the pressure of the cleaning liquid delivered to the pump device can be increased by the pump device. Water can preferably be used as the cleaning liquid. The coupling part can be connected to a water supply network, for example, by a liquid delivery line, which provides water under a certain pre-pressure, for example 1 bar to 5 bar, especially 1.5 bar to 3.5 bar. Advantageously, the cleaning liquid can also be sucked by the liquid delivery line, so that the pump device can also be operated in a suction mode. In the suction mode, the cleaning liquid can be sucked from a reservoir, for example, from a lake or a storage container, in which the cleaning liquid is not under pressure. In the suction mode of the pump device, there is a negative pressure upstream of the inlet of the pump device, under the effect of the negative pressure, the cleaning liquid is sucked.

[0021] In order to prevent ambient air from being sucked into the first flow path from the second outlet line via the second flow path bypassing the pump device in the suction mode, in a particularly preferred embodiment of the pressure cleaning device according to the invention, a third valve device is arranged in the second flow path, which is set up to automatically interrupt the second flow path when a negative pressure is applied to the area between the third valve device and the first flow path. If the pump device is in the suction mode, the third valve device reliably prevents ambient air from flowing into the first flow path via the second outlet line and the second flow path, without the operator having to take special measures. If the cleaning liquid is sucked from a lake or a garden pond by the pump device, for example, a negative pressure exists in the first flow path, and this negative pressure causes the third valve device arranged in the second flow path to automatically interrupt the second flow path, so that no air can enter the first flow path through the second flow path. If the suction mode (in which the cleaning liquid already under pre-pressure is conveyed to the pump device via the first flow path) is terminated, the third valve device automatically releases the second flow path again.

[0022] Advantageously, the third valve device is arranged downstream of the second valve device, ie in the region of the second flow path between the second valve device and the second outlet line.

[0023] The third valve device preferably has a third closing body that can move back and forth between a closed position and an open position, the third closing body resting on the valve seat in the closed position and spaced apart from the valve seat in the open position. The third closing body can be designed to be spherical, for example.

[0024] It is particularly advantageous if the third closing body automatically adopts its open position when a predetermined overpressure is applied to the region between the third valve device and the first flow path. The predetermined overpressure can be, for example, 0.5 bar to 1 bar. If a negative pressure is present in the region of the second flow path between the third valve device and the first flow path, the third closing body automatically adopts its closed position, which it retains until the pressure present in the region between the third valve device and the first flow path in the second flow path has a value greater than zero, in particular at least a value of 0.5 bar to 1.0 bar.

[0025] Preferably, the third closing body is preloaded into its closed position by a return spring. In this design, the third closing body remains in its closed position until the pressure prevailing in the area between the third valve device and the first flow path reaches a value at which the third closing body moves into its open position against the return force acting on it.

[0026] For example, the third valve device can be designed as a non-return valve.

[0027] In an advantageous embodiment, a particularly easy-to-handle handling of the pressure cleaning device according to the invention is achieved in that the pressure cleaning device has a coupling device for a rechargeable battery for supplying energy to the electric motor driving the pump device. The electric motor can be operated independently of the supply network by means of the rechargeable battery. This embodiment is particularly advantageous when the pressure cleaning device is designed as a handheld pressure cleaning device, because when using batteries, no power cord is required, which would make handling the pressure cleaning device difficult.

[0028] In an advantageous embodiment of the invention, the pressure cleaning device has a discharge mechanism for discharging the cleaning liquid. The discharge mechanism can be designed in one piece or in multiple pieces and has a first discharge channel and a second discharge channel, wherein the first discharge channel is connected to the first outlet line in a liquid-tight and releasable manner, and the second discharge channel is connected to the second outlet line in a liquid-tight and releasable manner. For example, the discharge mechanism can be designed in a tubular shape. In particular, the discharge mechanism can form a spray pipe.

[0029] It is particularly advantageous if the first discharge channel can be pluggably connected to the first outlet line and the second discharge channel can be pluggably connected to the second outlet line. This allows particularly easy handling of the discharge device when it is connected to the outlet line.

[0030] Advantageously, the discharge device can be detachably connected to a housing of the pressure cleaning device, wherein the housing at least partially surrounds the pump, an electric motor driving the pump device, and a transmission arranged between the electric motor and the pump device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The following description of the preferred embodiments of the present invention is combined with the accompanying drawings for further explanation.

[0032] Figure 1 shows a side view of a pressure cleaning apparatus;

[0033] Figure 2 Shows Figure 1 a partially cut-away side view of a pressure cleaning apparatus;

[0034] Figure 3 Shows Figure 2 A magnified view of detail X;

[0035] Figure 4 shows the pressure cleaning equipment along Figure 3 A partial cross-sectional view along line 4-4 in FIG. DETAILED DESCRIPTION

[0036] An advantageous embodiment of a pressure cleaning device according to the invention is schematically illustrated in the drawings and is denoted overall by reference numeral 10. The pressure cleaning device 10 has a housing 12 and a discharge device 14 which is detachably connected to the housing.

[0037] The housing 12 has an elongated upper housing part 16 with an upper side 18, an underside 20 and a front side 22 and a rear side 24. Furthermore, the housing 12 has a lower housing part 26 which is coupled to the underside 20 of the upper housing part 16.

[0038] In the embodiment shown, the pressure cleaning device 10 is designed as a handheld pressure cleaning device. For this purpose, the housing lower part 26 forms a handle in the form of a pistol grip 30, which has an upper end region 32 connected to the underside of the housing upper part 16 and a lower end region 34 arranged spaced apart from the upper end region 32. A coupling device 36 of the housing lower part 26 is connected to the lower end region 34 of the pistol grip 30, to which a rechargeable battery, which is known per se and therefore not shown in the drawings for a better overview, can be connected, which can be mechanically and electrically connected to the coupling device 36 in a releasable manner.

[0039] The pistol grip 30 can be grasped by an operator with his hand, wherein the upper end region 32 is associated with the thumb and index finger of the user.

[0040] An electric motor 38 , a transmission 40 and a pump 42 are arranged in the housing upper part 16 , and extend along a longitudinal axis 44 of the housing upper part 16 .

[0041] The pump 42 has a pump device 46 which can be driven by the electric motor 38 via the transmission 40 and has a plurality of pistons which each extend into a pump chamber, are arranged on a pitch circle and can move back and forth parallel to the longitudinal axis 44. For a better overview, only a piston 48 is shown in part in the drawing, which extends into the pump chamber 50. Such pump devices are known to those skilled in the art. Cleaning fluid, preferably water, can be conveyed by the pump device 46, wherein the pressure of the cleaning fluid can be increased, for example to a value of at least 10 bar, in particular 15 bar to 30 bar.

[0042] The pump device 46 has an inlet 52, to which an annular space 54 is connected, which surrounds a central outlet 55 of the pump device. The pump chambers 50 are connected to the annular space 54 via spring-loaded inlet valves 56 and to the outlet 55 via spring-loaded outlet valves 58. If the piston 48 extending into the respective pump chamber 50 is reciprocated, cleaning fluid flows into the pump chamber 50 via the inlet valve 56 in a known manner, and the cleaning fluid is then delivered at a higher pressure through the outlet valve 58. The outlet 55 is connected to a first outlet line 62 of the pump 42, through which the cleaning fluid can be discharged at a higher pressure.

[0043] For the supply of cleaning liquid, the pressure cleaning device 10 has a coupling part 64, which passes through a first housing opening 66 and can be connected to a liquid supply line (not shown in the drawing), for example a garden hose, the first housing opening 66 being arranged on the underside 20 of the housing upper part 16 in the region between the pistol grip 30 and the front side 22 of the housing upper part 16. For this purpose, a hose connector 68 can be used, which can be screwed onto the coupling part 64 protruding from the housing upper part 16.

[0044] The coupling part 64 forms an inlet channel 70 oriented perpendicularly to the longitudinal axis 44 of the housing upper part 16 and is connected to a connecting channel 72 oriented parallel to the longitudinal axis 44, which is connected via a connecting passage 74 to an inlet channel 76 extending to the inlet 52 of the pump device 46. The inlet channel 70, in combination with the connecting channel 72, the connecting passage 74 and the inlet channel 76, forms a first flow path via which the coupling part 64 is in flow connection with the inlet 52 of the pump device 46.

[0045] A valve tappet 78 projects into the connecting channel 72, which can be moved back and forth parallel to the longitudinal axis 44 of the housing upper part 16 and forms a first closing body 80, which interacts with a first valve seat 82. The first valve seat 82 is designed in the form of a narrowing of the connecting channel 72, which is arranged directly upstream of the connecting passage 74 with respect to the flow direction of the cleaning fluid. The first closing body 80 can be moved back and forth between a closed position and an open position by the valve tappet 78. In the closed position, the first closing body 80 rests against the first valve seat 82 in a liquid-tight manner, and in the open position, the first closing body 80 is spaced apart from the first valve body 82. The first closing body 80 and the first valve seat 82 form a first valve device 84 in combination. A push rod 86 is connected to the valve tappet 78 in the direction of the pistol grip 30 , and the push rod 86 is integrally connected to the valve tappet 78 and is prestressed in the direction of the first valve seat 82 by a first return spring 88 , so that the first closing body 80 is pressed toward the first valve seat 82 under the spring elastic return force of the first return spring 88 .

[0046] The push rod 86 extends in the direction of the pistol grip 30 to a first operating element 90, which is arranged on the upper end region 32 of the pistol grip 30 and is mechanically coupled to the push rod 86. The first operating element 90 is designed as a trigger lever 92, which can be pivoted by the operator in the direction of the pistol grip 30 with the index finger while the operator is holding the pistol grip 30. The trigger lever 92 has a follower 94, which abuts against a coupling section 96 of the push rod 86, so that when the trigger lever 92 is actuated, the push rod 86 is moved in the direction away from the first valve seat 82 against the restoring force of the first restoring spring 88. By actuating the trigger lever 92, the operator can thus release the first flow path by means of the first valve device 84. If the operator releases the trigger lever 92, the first flow path is interrupted by means of the first valve device 84, wherein the first closing element 80 is pressed against the first valve seat 82 under the action of the first restoring spring 88.

[0047] Downstream of the first valve device 84, in the inlet region of the inlet channel 76 adjacent to the connecting passage 74, a second flow path branches off from the first flow path, wherein the second flow path extends to a second outlet line 98 of the pump 42 while bypassing the pump device 46. The second outlet line 98 is parallel to the first outlet line 62. The second flow path is formed by a bypass channel 100 oriented parallel to the inlet channel 76 and a passage 102 adjacent to the bypass channel 100 in the direction of the second outlet line 98, through which the bypass channel 100 is connected to the second outlet line 98. A valve body 104 is held facing the bypass channel 100 at the passage 102, the valve body forming a through-channel 106 which connects the bypass channel 100 to the passage 102.

[0048] Immediately upstream of the through-channel 106, the bypass channel 100 is penetrated by a valve rod 108, which is oriented transversely to the longitudinal axis 44 of the housing upper part 16 and passes through a second housing opening 112 of the housing 12 with a free end region 110 and is connected to a second operating element 114 (in the form of a knob 116) in a rotationally fixed manner. The valve rod 108 can be rotated about its longitudinal axis 118 by means of the knob 116. The longitudinal axis 118 thus forms the rotation axis of the valve rod 108.

[0049] Aligned with the through-channel 106 of the valve body 104, the valve stem 108 has a through-hole 120, which is aligned with the through-channel 106 in a first rotational position of the valve stem 108 and is oriented perpendicular to the through-channel 106 in a second rotational position offset by 90° relative to the first rotational position. Thus, in the first valve position, the valve stem 108 releases access to the through-channel 106, and in the second rotational position, the valve stem blocks access. Thus, the valve stem 108 forms a second closing body 122 directly upstream of the through-channel 106, which, in combination with the through-channel 106, forms a second valve device 124, which is coupled to a second operating element in the form of a rotary knob 116 and by means of which an operator can selectively release and interrupt the second flow path. For this purpose, the operator can turn the rotary knob 116 about the longitudinal axis 118 of the valve stem 108. When the rotary knob 116 is not actuated, the valve rod 108 and thus the second closing element 122 retain their current rotational position.

[0050] The valve body 104 forms a third valve seat 126 on its side facing away from the valve rod 108, which interacts with a third closing body 128 in the form of a valve ball 130, which extends into the through-hole 102 and is pressed against the third valve seat 126 by a second return spring 132. The third closing body 128 and the third valve seat 126 form a third valve device 134 in the form of a check valve in combination.

[0051] The discharge device 14 already mentioned can be connected to the housing 12. In the exemplary embodiment of the invention, this is designed in the manner of a spray pipe and has a first discharge channel 136 and a second discharge channel 138. The first discharge channel 136 carries a first discharge nozzle 140 at its end facing away from the housing 12, and the second discharge channel 138 carries a second discharge nozzle 142 at its end facing away from the housing 12. The first discharge channel 136 can be connected to the first outlet line 62 in a plug-in manner, and the second discharge channel 138 can be connected to the outlet line 98 in a plug-in manner. For this purpose, an end section 146 of the discharge device 14 facing the housing 12 can be inserted into a coupling sleeve 148 of the pump 42, which protrudes from the housing upper part 16 at the front side 22, wherein the end section 146 can be releasably locked to the coupling sleeve 148 by means of a locking element 150 arranged on the coupling sleeve 148. This is particularly advantageous from the perspective of the pump 42. Figure 3 Become obvious.

[0052] As already mentioned, a liquid delivery line, for example a garden hose, can be connected to the connection part 64 in order to supply the pressure cleaning device 10 with cleaning liquid. If the operator actuates the trigger lever 92, the cleaning liquid can flow into the inlet channel 76 and the bypass channel 100. The liquid flowing into the inlet channel 76 then enters the pump device 46 via the inlet 52 and can be delivered from the pump device via the first outlet line 62 at a higher pressure. The cleaning liquid flowing into the bypass channel 100 can be discharged via the through-portion 102 and the second outlet line 98 adjacent thereto without increasing its pressure while bypassing the pump device 46, wherein the cleaning liquid is only discharged via the second outlet line 98 when the user rotates the second closing body 122 into its open position by means of the knob 116, in which the through-opening 120 is aligned with the through-channel 106 of the valve body 104. If, however, the closing body 122 is in its closed position, the second closing body 122 blocks access to the through-channel 106 , so that cleaning fluid can only be discharged via the first discharge line 62 and not via the second discharge line 98 .

[0053] In order to provide the cleaning liquid, the connecting part 64 can be connected to a water supply network, for example, via a liquid delivery line, so that the cleaning liquid provided is already in a certain pre-pressure, which can be, for example, 1 bar to 5 bar, in particular 1.5 bar to 3.5 bar. The pre-pressure of the cleaning liquid provided ensures that the valve ball 130 of the third valve device 134 rises from the third valve seat 126 against the spring elastic restoring force of the second restoring spring 132, and therefore, as long as the second closing body 122 of the second valve device 124 is in its open position, the cleaning liquid flowing into the bypass channel 100 can flow to the second outlet line 98.

[0054] However, it is not necessary for the function of the pressure cleaning device 10 that the cleaning liquid provided is already at a certain pre-pressure. On the contrary, the pump device 46 can also be operated in a suction mode, in which the cleaning liquid can be sucked from a reservoir of cleaning liquid, for example from a lake or a storage container, through the connection part 64 and the liquid delivery line connected thereto, in which the cleaning liquid is not under pressure. In the suction mode of the pump device 46, there is a negative pressure upstream of the inlet 52 and therefore especially in the area between the third valve device 134 and the first flow path. In order to prevent the ambient air from being able to flow to the first flow path via the second output line 98 and the second flow path and to the inlet 52 of the pump device 46 via the first flow path, a third valve device 134 is used, which automatically interrupts the second flow path and thus interrupts the entry of the ambient air into the first flow path when there is a negative pressure in the area between the third valve device 134 and the first flow path.

Claims

1. A pressure cleaning device, comprising a pump (42) having an electrically drivable pump device (46) for conveying a cleaning liquid, the pump device having an inlet (52) and an outlet (55), and a coupling part (64) for connecting a liquid conveying line for providing the cleaning liquid, wherein: The connecting portion (64) is in flow connection with the inlet (52) of the pump device (46) via a first flow path, and the first output line (62) is connected to the outlet (55) of the pump device (46), and wherein the pressure cleaning device (10) has a second flow path bypassing the pump device (46), and the second output line (98) is connected to the second flow path, characterized in that a first valve device (84) is arranged in the first flow path for selectively releasing and interrupting the first flow path, and the second flow path branches off from the first flow path downstream of the first valve device (84).

2. The pressure cleaning device according to claim 1, characterized in that The first flow path and the second flow path are integrated into the pump (42).

3. The pressure cleaning device according to claim 1 or 2, characterized in that The first outlet line (62) and the second outlet line (98) are integrated into the pump (42).

4. The pressure cleaning device according to claim 1, characterized in that The first valve device (84) is coupled to a first manually actuatable operating element (90).

5. The pressure cleaning device according to claim 4, characterized in that The first valve device (84) has a first closing body (80), which is mechanically coupled to the first operating element (90) and can be moved back and forth between a closed position and an open position.

6. The pressure cleaning device according to claim 5, characterized in that The first closing body (80) can be moved from a closed position to an open position by means of the first operating element (90) against a spring elastic restoring force.

7. The pressure cleaning device according to claim 5 or 6, characterized in that The pressure cleaning device is designed as a handheld pressure cleaning device (10) and has a handle (28) that can be grasped by an operator.

8. The pressure cleaning device according to claim 7, characterized in that The handle is designed in the manner of a pistol grip (30), and the first operating element (90) is designed as a trigger lever (92).

9. The pressure cleaning device according to claim 1, 2, 4, 5 or 6, characterized in that A second valve device (124) is arranged in the second flow path for selectively opening and interrupting the second flow path, wherein the second valve device (124) is coupled to a second manually actuatable operating element (114).

10. The pressure cleaning device according to claim 9, characterized in that The second valve device (124) has a second closing body (122), which is mechanically coupled to the second operating element (114) and can be moved back and forth between an open position and a closed position by means of the second operating element (114), wherein the second closing body maintains its current position when the second operating element (114) is not actuated.

11. The pressure cleaning device according to claim 10, characterized in that The second closing body (122) is rotatable about a rotation axis (118) and has a through hole (120) oriented perpendicularly to the rotation axis (118), wherein the through hole is oriented in alignment with a through channel (106) arranged in a second flow path in a first rotation position of the second closing body (122) and is oriented perpendicularly to the through channel (106) in a second rotation position, wherein the second closing body (122) is movable back and forth between its first rotation position and its second rotation position by means of a second operating element (114).

12. The pressure cleaning device according to claim 11, characterized in that The second closing body (122) is designed as a valve rod (108) which is supported so as to be rotatable about the rotation axis (118).

13. The pressure cleaning device according to claim 9, characterized in that A third valve device (134) is arranged in the second flow path and is designed to automatically interrupt the second flow path when a negative pressure is applied to a region between the third valve device (134) and the first flow path.

14. The pressure cleaning device according to claim 13, characterized in that The third valve device (134) is arranged downstream of the second valve device (124).

15. The pressure cleaning device according to claim 13, characterized in that The third valve device (134) has a third closing body (128) which is movable back and forth between a closed position and an open position, wherein the third closing body abuts against a valve seat (126) in the closed position and is spaced apart from the valve seat (126) in the open position.

16. The pressure cleaning device according to claim 15, characterized in that When a predetermined excess pressure is applied to the region between the third valve device (134) and the first flow path, the third closing element (128) automatically assumes its open position.

17. The pressure cleaning device according to claim 16, characterized in that The third closing element (128) is preloaded into its closed position by means of a return spring (132).

18. The pressure cleaning device of claim 1, wherein: The pressure cleaning device (10) has a coupling device (36) for a rechargeable battery for supplying energy to an electric motor (38) driving the pump device (46).

19. The pressure cleaning device of claim 1, wherein: The pressure cleaning device (10) has a discharge device (14) for discharging a cleaning liquid, the discharge device having a first discharge channel (136) and a second discharge channel (138), wherein the first discharge channel (136) can be connected to the first outlet line (62) in a liquid-tight and releasable manner, and the second discharge channel (138) can be connected to the second outlet line (98) in a liquid-tight and releasable manner.

20. The pressure cleaning device of claim 19, wherein: The first discharge channel (136) can be connected to the first output line (62) in a pluggable manner, and the second discharge channel (138) can be connected to the second output line (98) in a pluggable manner.

21. The pressure cleaning device of claim 19, wherein: The discharge device (14) is detachably connectable to a housing (12) of the pressure cleaning device (10), wherein the housing (12) at least partially surrounds the pump (42), an electric motor (38) driving the pump device (46), and a transmission (40) arranged between the electric motor (38) and the pump device (46).

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