Cleaning gun

Abstract

Cleaning gun (1), in particular for a high-pressure cleaner, comprising a housing (2) with a flow channel (4), a flow guide device (6) and an actuating device (50), wherein the flow channel (4) has an inlet (8) and an outlet (10), wherein the flow guidance device (6) is at least partially arranged in the flow channel (4), wherein the flow guidance device (6) is designed such that that a fluid flow through the flow channel (4) from the inlet (8) to the outlet (10) can take place on different flow paths, including at least a first flow path (41) and a second flow path (42), wherein the actuating device (50) is designed to actuate the flow control device (6) and thus to control the fluid flow through the different flow paths, wherein the actuating device (50) is designed such that in a first actuating state the first flow path (41) is open and, if required, in a second actuating state the second flow path (42) is open, wherein the flow guiding device (6) has a closing piston (12), wherein in particular the first flow path (41) leads at least partially through the closing piston (12), wherein the flow control device (6) comprises a valve device (18), wherein the valve device (18) is advantageously arranged within the closing piston (12) and is designed to block or open the first flow path (41), wherein the closing piston (12) and / or at least a part of the valve assembly (18) can be moved directly or indirectly by the actuating device (52), wherein the closing piston (12) has a plurality of lateral inlet openings (24) and an outlet opening (26).

Description

[0001] The invention relates to a cleaning gun, in particular a high-pressure cleaning gun, with a flow guidance device that has different flow paths.

[0002] Cleaning guns, especially high-pressure cleaning guns, are already known from the prior art. They are used, for example, for cleaning pavement in pedestrian zones, for facade cleaning, and for engine cleaning. The purpose of cleaning guns is to control the flow of fluid from a high-pressure source into a device, in particular a cleaning lance or a spray nozzle. For this purpose, the inlet of the high-pressure cleaning gun is indirectly connected to the high-pressure source via a hose, and the outlet of the high-pressure cleaning gun is connected, for example, to the cleaning lance. The fluid flow through the cleaning gun is usually controlled by a valve in the cleaning gun, which determines the flow rate of the fluid.A problem with existing high-pressure cleaning guns is that the fluid flow rate is difficult for the user to control. These guns also have the disadvantage that adjusting the water flow requires a second hand, or is difficult to do with one hand while the gun is in operation. The spraying process may even have to be interrupted to adjust the flow rate.

[0003] DE 20 2016 102 769 U1 relates to a water flow control arrangement for a garden spray gun. This garden spray gun has a shut-off valve and a shut-off valve connection comprising a connecting part which includes a hose connection part and a support part, wherein the support part has a filling chamber for receiving a spring and the shut-off valve, wherein a step is provided on the inner wall of the support part by which the first end of the spring is supported, while the second end of the spring is drawn over a plug-in part of the shut-off valve, wherein the shut-off valve has independent flow paths.

[0004] US 4,406,383 A and US 6,000,637 A relate to high-pressure cleaner guns which have a handle and a main body, wherein a sliding valve is arranged in a lower chamber, and the main flow is actuated by this valve.

[0005] EP 1 886 732 A1 relates to a valve arrangement for shutting off and releasing liquids, preferably under high pressure, in particular for a high-pressure line, wherein the valve body of the valve is biased against the valve body by the liquid pressure in the closing direction.

[0006] EP 1 234 616 A2 relates to a hand-held spray gun for a high-pressure cleaning device with a liquid line. Two shut-off valves are arranged one after the other in the liquid line in the direction of flow. These valves can be opened sequentially by the same actuating element in such a way that only one shut-off valve is opened with slight actuation of the actuating element, and both shut-off valves are opened with stronger actuation.

[0007] It is therefore an object of the present invention to provide a cleaning gun, in particular a high-pressure cleaning gun, which, with the simplest and most direct operation possible, enables a high degree of controllability of the flowing fluid quantity.

[0008] This problem is solved with a cleaning gun according to claim 1. Further advantages, features and advantageous embodiments of the invention will become apparent from the dependent claims, the description, and the figures and their description.

[0009] According to the invention, a cleaning gun, particularly for a high-pressure cleaner, is provided, comprising a housing with a flow channel, a flow guide, and an actuating device, wherein the flow channel has an inlet and an outlet, wherein the flow guide is at least partially arranged in the flow channel, and wherein the flow guide is designed such that fluid flow through the flow channel from the inlet to the outlet can occur via different flow paths, including at least a first flow path and a second flow path, and wherein the actuating device is designed to actuate the flow guide and thus control the fluid flow through the different flow paths. This has the advantage of particularly simple and direct operation.Different flow paths, in this context, mean that the fluid flow from inlet to outlet can, in principle, occur along two different paths. In other words, this can mean that two separate flow cross-sections exist, each belonging to a first flow path and the other to a second flow path. These cross-sections can, for example, be arranged side by side. Advantageously, however, these cross-sections are arranged such that one cross-section is enclosed by the other, similar to a coaxial cable. The flow device is advantageously designed in such a way that it directly determines the flow paths through the different flow paths. The cleaning gun is, in particular, a high-pressure cleaning gun.A high-pressure cleaning gun is a cleaning gun designed to allow a fluid, particularly a cleaning fluid, to flow through it at a pressure of 5–750 bar, preferably 5–500 bar, and especially preferably 10–350 bar. The cleaning gun can be connected, for example, via a connecting element, preferably a high-pressure hose, to a fluid source, particularly a high-pressure cleaner, especially in a high-pressure cleaning gun configuration. The flow channel defines the path the fluid takes through the cleaning gun. It has an inlet through which the fluid enters the flow channel or the cleaning gun and an outlet through which the fluid leaves the flow channel or the cleaning gun.Preferably, the flow channel is fluidically separated from its surroundings, particularly by a partition, so that the fluid cannot enter or exit the flow channel at any point other than the inlet or outlet. Alternatively, the flow channel may have multiple inlets and / or outlets. The flow channel may, for example, have a circular cross-section, at least partially, especially in the inlet or outlet area. Other cross-sectional shapes, such as a rectangular cross-section, are also possible. The flow channel may have a constant cross-section, ensuring good fluid flow. However, a variable cross-section is also possible to adapt the flow channel to the structural requirements of the external pistol shape, for example.The flow control device preferably serves to influence the fluid flow, for example, with regard to the flow direction and / or the flow path through the flow channel and / or the flow rate. Because the flow control device is at least partially arranged within the flow channel, the fluid flow can be influenced by the flow control device in a simple and compact design. The fluid is preferably a liquid, and particularly preferably water or a water mixture. The water can, for example, be mixed with a solvent or cleaning agent. Dividing the fluid flow into different flow paths can be used, for example, to control the fluid volume. The control of the flow paths via the actuating device can be controlled by the user. For example, the flow control device can be controlled via the actuating device in such a way as to...It can be activated to close or open one or more river channels. It is also conceivable that the shape, form, and / or position of one or more river channels can be changed.

[0010] Advantageously, the cleaning gun includes an actuating device, in particular with a hand lever, wherein the actuating device is designed to actuate the flow guide, in particular by at least partially displacing the flow guide relative to the housing, preferably in an actuation direction. The actuating device is designed to actuate the flow guide, in particular by at least partially displacing the flow guide relative to the housing, preferably in the actuation direction. At least partial displacement means, on the one hand, that at least a part or section of the flow guide is spatially displaced. For example, a pipe or a piston that is part of the flow guide can be moved. It is conceivable that different parts of the flow guide are displaced depending on the actuation.On the other hand, partial displacement can also mean that, depending on the actuation, the flow guide or a part of the flow guide can be displaced to varying degrees. The direction of actuation can, at least partially, run parallel to the fluid flow direction through the flow channel.

[0011] Preferably, the flow guide is designed such that fluid flow through the flow channel from the inlet to the outlet can be prevented, particularly when the flow guide or its components are in a closed position. "Prevented" in this context means that no flow through the flow channel is possible; in particular, no flow is possible through either the first or second flow path. In other words, the fluid cannot travel from the inlet of the cleaning gun to the outlet in this case. This allows the user to interrupt the fluid flow without having to switch off the pressure washer or its pump.

[0012] In a further embodiment of the invention, the actuating device is designed such that in a first actuation state, the first flow path is open, and, if required, in a second actuation state, the second flow path is open. This makes it possible to successively increase the fluid flow by sequentially activating the two flow paths, thereby enabling particularly good and simple control of the flow rate. A further advantage of this embodiment is that such a two-stage opening of the flow paths significantly reduces the actuation resistance, since the entire fluid flow is not activated all at once.

[0013] Preferably, the actuating device comprises an actuating lever, preferably a hand lever. This allows the user to actuate it directly and easily.

[0014] Preferably, the actuating device comprises a hand lever, wherein in the first actuation state the hand lever is partially depressed and in the second actuation state the hand lever is more strongly, preferably fully, depressed. This represents a particularly simple and direct form of operation for the user, since the successive opening of the two flow paths and thus the successive increase of the fluid flow is very directly and easily linked to the actuation of the hand lever. In particular, it is also possible, for example, to close the second flow path again by releasing the second actuation state and thus limit the flow rate again. In other words, the user can directly control the flow rate at will by the deflection of the hand lever induced by them.

[0015] In a preferred embodiment, the flow guidance device additionally has a third flow path and optionally also a fourth flow path or even further flow paths. This enables particularly precise adjustment of the flow rate.

[0016] According to the invention, the flow guide device has a closing piston, wherein, in particular, the first flow path leads at least partially through the closing piston. The closing piston has the function of closing, if necessary, one flow path, preferably the second flow path and / or the first flow path. The first flow path passing through the closing piston means that the closing piston contains a continuous cavity through which the first flow path is guided. If the first flow path leads through the closing piston, at least two different flow paths are arranged in a particularly space-saving manner, thus saving valuable installation space.

[0017] According to the invention, the flow control device comprises a valve assembly, the valve assembly being advantageously arranged within the closing piston. This allows for a particularly compact cleaning gun. This closing piston can be designed to block or open the second flow path. This means, in particular, that even when the closing piston is closed, and thus, for example, when the second flow path is blocked, the fluid flow via the first flow path can be prevented or enabled as needed via the valve assembly. This allows for very precise metering of the fluid quantity. Advantageously, for example, when the closing piston is arranged in the flow channel, it can fill the entire cross-section of the flow channel.In this example, opening the closing piston is equivalent to releasing the entire flow channel or, alternatively, a relatively large portion of it. With the closing piston closed, however, a narrower flow path, in this case the first flow path, can be controlled—that is, specifically opened or closed—via the valve mechanism within the closing piston. Preferably, the second flow path runs around the closing piston.

[0018] Furthermore, according to the invention, the closing piston and / or at least a part of the valve assembly can be displaced directly or indirectly by the actuating device. This means that by actuating the actuating device, the closing piston can be moved into a position that opens the flow path and / or into a position that closes the flow path. Likewise, the actuating device can open and / or close the valve assembly by moving one or more parts of the valve assembly in such a way that they close and / or open a flow path.

[0019] Advantageously, the valve assembly comprises a ball with a tensioning device, in particular a spring, wherein the first flow path leads through a gap between the ball and the closing piston, and wherein a part of the actuating device, in particular a transmission element of the actuating device, advantageously contacts the ball directly or indirectly. This allows for a particularly compact valve assembly. Preferably, the ball is pre-tensioned by the spring, in particular against the direction of actuation, against the closing piston and / or against the actuating device, in particular against the transmission element of the actuating device. Through the contact of a part of the actuating device with the ball, it is possible to displace the ball against the resistance of the spring by means of the actuating device.By pushing the ball away, a gap is created between the ball and the closing piston, and the first flow path is opened. For example, the transmission element can be in contact with a hand lever, whereby activating the hand lever actuates the transmission element and moves the ball.

[0020] Preferably, the valve assembly and the closing piston are aligned concentrically and parallel. This means, in particular, that the valve assembly is arranged within the closing piston and that both the closing piston and the valve assembly can be opened by movement in the same actuation direction. Preferably, the transmission means is an elongated object, for example, a round or square pin, which can be moved in the actuation direction by activating the hand lever. It first contacts the valve assembly, especially the ball of the valve assembly, and pushes the contacted part in the actuation direction. With further movement, the closing piston is also contacted and displaced in the actuation direction.Preferably, the transmission element has two different cross-sections with two different diameters, wherein the diameter of an end section of the transmission element, located on the side of the transmission element facing the valve assembly and the closing piston, is smaller than the diameter of the section following it in the opposite direction of actuation. When the transmission element is moved, the end section of the transmission element preferably contacts a part of the valve assembly, preferably the ball, through an opening in the closing piston and pushes it back, thereby opening the valve assembly and thus the first flow path. The diameter of the end section is smaller than the diameter of the opening in the closing piston, so that the closing piston is not affected by this process.By applying more force to the actuator, the next section of the transmission element, which has a larger diameter than the opening of the closing piston, comes into contact with the closing piston. Thus, by further moving the transmission element in the direction of actuation, the closing piston is also moved in the same direction. This opens the second flow path.

[0021] In a preferred embodiment, the cleaning gun has a closable first opening through which the transmission element can be accessed. This allows, for example, the easy replacement or repair of the transmission element, or, for instance, adjustment of the positioning of a sealing ring connected to the transmission element, or, optionally, sealing the cleaning gun at a point where the transmission element exits the interior of the cleaning gun to connect, for example, to the actuating element, in particular a hand lever. Advantageously, this first opening is closed during normal operation of the cleaning gun. The first opening is preferably closable by a screw mechanism. Preferably, the first opening is located, particularly when viewed from the transmission element, in a direction along a longitudinal axis of the transmission element.This allows for particularly easy maintenance of the transmission equipment and its surroundings.

[0022] In a further preferred embodiment, the cleaning gun has a closable second opening through which the locking piston can be accessed. This allows, for example, the easy replacement or repair of the locking piston, or an adjustment of its position. Advantageously, this second opening is closed during normal operation of the cleaning gun. The second opening is preferably closable by a screw mechanism. Preferably, the second opening is located near the locking piston, in particular along a longitudinal axis of the locking piston when viewed from the piston's perspective. This allows for particularly easy maintenance of the locking piston.

[0023] According to the invention, the closing piston has a plurality of lateral inlet openings and one outlet opening, wherein the outlet opening can be closed, in particular, by the ball of the valve assembly. The first flow path leads first through the inlet openings and then through the outlet opening. Preferably, the inlet openings are located on lateral, in particular flat, side surfaces of the closing piston.

[0024] In one embodiment, the flow guide is designed such that the smallest flow cross-section of the first flow path is smaller than the smallest flow cross-section of the second flow path. This results in a second fluid volume passing through the flow channel of the cleaning gun per unit time being greater when the second flow path is open than the first fluid volume passing through the flow channel per unit time when only the first flow path is open. Preferably, the ratio of the flow cross-section of the first flow path to the second flow path is greater than 0.1 and less than 0.9, more preferably greater than 0.3 and less than 0.7, and most preferably approximately 0.5.

[0025] In a preferred embodiment, the flow guidance device is designed such that fluid flow through the first flow path is possible even when fluid is flowing through the second flow path. This allows for optimal use of the available space in the flow channel. In particular, when the first flow path passes through the closing piston of the second flow path, the maximum possible fluid volume per unit of time can be achieved. Preferably, with the closing piston in the closed position and the valve open, fluid flow is only possible through the first flow path and no fluid flow is possible through the second flow path.

[0026] In an alternative embodiment, the housing features a locking mechanism, for example, a screw, which can be screwed into the flow channel from the outside. While the flow channel remains unobstructed at least at the point of the locking mechanism when the screw is not engaged, it is completely or partially blocked when the screw is engaged. For this purpose, the housing may, for example, have a threaded hole for the screw. Completely blocking the flow channel can serve as a safety feature to prevent unintentional activation of the cleaning gun. Partially blocking the channel provides another way to adjust the fluid flow.

[0027] In another alternative embodiment, a locking mechanism is located on the actuating device. For example, a toggleable switch on the hand lever can prevent unintentional activation of the lever by being positioned between the lever and the handle, thus blocking the path to actuation. This represents a fairly simple safety mechanism that can be activated quickly and easily when needed and can be used, for example, during short breaks.

[0028] In a preferred embodiment, the housing is at least partially, preferably predominantly, and particularly preferably overwhelmingly, made of metal, especially aluminum, brass, or bronze. Predominantly means 70 percent or more, and overwhelmingly means 80 percent or 95 percent or more. This ensures a particularly robust cleaning gun.

[0029] In a further preferred embodiment, the inlet and / or outlet of the flow channel has a mounting means, in particular an internal or external thread. This enables the simple and secure attachment of, for example, a cleaning lance or high-pressure nozzle to the outlet, as well as, for example, a high-pressure hose to the outlet.

[0030] In a further embodiment, the inlet of the flow channel extends in an inlet direction and the outlet of the flow channel extends in an outlet direction, with a first angle being formed between the inlet direction and the outlet direction, the first angle being in a range of 40° to 150° and preferably in a range of 60° to 120°. This allows for easy manufacturing with a relatively low flow loss.

[0031] In another embodiment, the flow guide device is arranged at least partially in a part of the flow channel that extends along the direction of actuation. This enables a particularly simple and effective design of the actuation mechanism.

[0032] Naturally, the above-mentioned embodiments can also be combined with each other, unless otherwise stated.

[0033] A better understanding and further advantages and features will become apparent from the following description of a preferred embodiment of the invention and two embodiments of a closing piston according to the invention, with reference to the accompanying figures. These show: Fig. 1 A sectional view of an embodiment of a cleaning gun according to the invention, in which the first and second flow paths are closed. Fig. 2 An enlarged sectional view of an area around the flow guide device of an embodiment of a cleaning gun according to the invention, in which the first and second flow paths are closed. Fig. 3 A sectional view of an embodiment of a cleaning gun according to the invention, in which the first flow path is open and the second flow path is closed. Fig. 4 An enlarged sectional view of an area around the flow guide device of an embodiment of a cleaning gun according to the invention, in which the first flow path is open and the second flow path is closed; Fig. 5 A sectional view of an embodiment of a cleaning gun according to the invention, in which the first and second flow paths are open; Fig. 6 An enlarged sectional view of an area around the flow guide device of an embodiment of a cleaning gun according to the invention, in which the first and second flow paths are open; Fig. 7 A perspective view of a first embodiment of a closing piston according to the invention; and Fig. 8 A perspective view of a second embodiment of a closing piston according to the invention.

[0034] On the Fig. 1 and Fig. Figure 2 shows a cleaning gun 1 with a hand lever 52, which is part of an actuating device 50, according to a preferred embodiment of the invention, in which the first flow path 41 and the second flow path 42 are closed. The cleaning gun 1 has an inlet 8, to which, for example, a high-pressure hose can be connected, and through which a fluid can enter the cleaning gun 1. In the closed state shown here, the path through the flow channel 4 is blocked by the flow guide 6, and the fluid cannot reach the outlet 10. The hand lever 52 is in the unpressed state. The transmission means 54, which here is an elongated pin, is in contact with the ball 20 of the valve assembly 18, but does not push it away in the actuating direction B against the spring force of the spring 22, so that the ball rests against the outlet opening 26 and thus blocks the first flow path 41.In addition, the closing piston 12, pre-tensioned by the tension spring 30, rests against the stop 32 and thus also blocks the second flow path 42.

[0035] On the Fig. 3 and Fig. Figure 4 shows a cleaning gun 1 or high-pressure cleaning gun with a hand lever 52, which is part of an actuating device 50, according to a preferred embodiment of the invention, in which the first flow path 41 is open and the second flow path 42 is closed. In this case, the hand lever 52 is partially depressed. This means that it is rotated clockwise about the pivot joint 56 and thereby displaces the transmission means 54 in the actuating direction B. As shown in particular in Fig. As can be seen in Figure 4, the ball 20, which is in contact with the narrow end of the transmission element 54, is displaced against the spring tension of the spring 22 in the actuation direction B. The valve assembly 18 is thus open. Due to the relatively small sealing seat diameter in the form of the relatively small ball 20, the trigger resistance required to open the first flow path 41 is advantageously low. The rear, wider part of the transmission element 54 is now partially in contact with the closing piston 12 at contact surfaces 34, but in the position shown here, it does not yet displace it in the actuation direction B. The closing piston, therefore, also rests here, pre-tensioned by the tension spring 30, against the stop 32 and blocks the second flow path. In this embodiment, the stop 32 has a central round opening through which the first flow path 41 passes.A fluid entering through inlet 8 in inlet direction E, passing through the flow channel 4 to the flow guide, can then flow via the first flow path 41 (indicated by dashed lines) through lateral inlet openings 24 in the closing piston 12, past the ball 20 in the flow guide 6, and through the outlet opening 26 of the closing piston 12 to the outlet 10, exiting the cleaning gun 1 in outlet direction A. In this position, preferably only a portion of the maximum possible fluid quantity reaches the outlet. Preferably, the spring tension of the tension spring 30, which pre-tensions the closing piston, is greater than the spring tension of the spring 20 of the valve assembly 18.This allows the user to advantageously notice a significantly greater resistance as soon as the valve assembly 18 is fully opened by actuating the hand lever 52. The user then knows that further actuation of the hand lever against this increased resistance will result in the opening of the second flow path 42. The two-stage opening—first of the first flow path 41 and then of the second flow path 42, in particular the movement of the ball 20 and then of the entire closing piston 12—has the additional advantage of significantly reducing the trigger resistance of the hand lever 52. Without this two-stage mechanism, the ball 20, which would then be subjected to the full hydraulic pressure, would have to be lifted abruptly, meaning that actuation would require considerable force.

[0036] On the Fig. 5 and Fig. Figure 6 shows a cleaning gun 1 with a hand lever 52, which is part of an actuating device 50, according to a preferred embodiment of the invention, in which the first flow path 41 and the second flow path 42 are open. In this case, the hand lever 52 of the actuating device 50 is fully depressed, which corresponds to a maximum possible rotation about the pivot joint 56 in a clockwise direction. This displaces the transmission means 54 as far as possible in the actuating direction B. The front, narrow end of the transmission means 54 has displaced the ball 20 against the spring tension of the spring 22 in the actuating direction B. In addition, the rear, wide part of the transmission means 54 rests against the contact surfaces 34 of the closing piston 12 and has also displaced the closing piston 12 against the spring tension of the tension spring 30 in the actuating direction B. This means that, on the one hand, the first flow path 41, as already in the case of the Fig. 3 and Fig. 4, free. On the other hand, the second flow path 42 is now also free and leads past the closing piston 12 and through a central round opening in the stop 32. Behind the stop 42, the first flow path 41 and the second flow path are reunited in this embodiment, and the fluid is guided via the flow channel 4 to the outlet 10. In this position, maximum fluid flow is possible.

[0037] In Fig. Figure 7 shows a preferred embodiment of the closing piston 12. When the hand lever 52 is partially or fully depressed, the transmission element 54 rests against the contact surfaces 34. When the hand lever 52 is fully depressed, the closing piston 12 is thereby displaced in the actuation direction B, and the second flow path 42, which leads around the closing piston, is opened. With the transmission element 54 resting against the contact surfaces 34, the portion of the fluid that flows through the first flow path 41 is guided past the transmission element 54 via the recesses 36. The lateral vanes 38 enable improved flow characteristics. This advantageously allows for laminar flow, significantly reducing or completely preventing turbulence. Thus, a particularly efficient fluid flow with minimal energy loss is ensured.

[0038] In Fig.Figure 8 shows another preferred embodiment of the closing piston 12. The fluid enters the closing piston 12 through the lateral inlet openings 24 from the inlet 8 and exits it through the outlet opening 26 towards the outlet 10 when the first flow path 41 is open. The transmission element 54 rests against the contact surfaces 34 when the hand lever 52 is partially or fully depressed. When the hand lever 52 is fully depressed, the closing piston 12 is thereby displaced in the actuation direction B, and the second flow path 42, which leads around the closing piston, is opened. With the transmission element 54 resting against the contact surfaces 34, the portion of the fluid that flows through the first flow path 41 is guided past the transmission element 54 via the recesses 36. Reference symbol list: 1 cleaning gun 2 cases 4 Flow channel 6 Flow guide device 8 Admission 10 Outlet 12 locking pistons 14 Valve assembly 18 Valve assembly 20 balls 22 spring 24 Entrance opening 26 Exit opening 28 side surface 30 tension springs 32 stops 34 Contact area 36 In-depth study 38 side wings 41 First river route 42 Second River Route 50 Actuating device 52 hand levers 54 means of transmission 56 Swivel joint A Outlet direction B Direction of action E Inlet direction

Claims

[1] Cleaning gun (1), in particular for a high-pressure cleaner, comprising a housing (2) with a flow channel (4), a flow guide device (6) and an actuating device (50), wherein the flow channel (4) has an inlet (8) and an outlet (10), wherein the flow guidance device (6) is at least partially arranged in the flow channel (4), wherein the flow guidance device (6) is designed such that that a fluid flow through the flow channel (4) from the inlet (8) to the outlet (10) can take place on different flow paths, including at least a first flow path (41) and a second flow path (42), wherein the actuating device (50) is designed to actuate the flow control device (6) and thus to control the fluid flow through the different flow paths, wherein the actuating device (50) is designed such that in a first actuating state the first flow path (41) is open and, if required, in a second actuating state the second flow path (42) is open, wherein the flow guiding device (6) has a closing piston (12), wherein in particular the first flow path (41) leads at least partially through the closing piston (12), wherein the flow control device (6) comprises a valve device (18), wherein the valve device (18) is advantageously arranged within the closing piston (12) and is designed to block or open the first flow path (41), wherein the closing piston (12) and / or at least a part of the valve assembly (18) can be moved directly or indirectly by the actuating device (52), wherein the closing piston (12) has a plurality of lateral inlet openings (24) and an outlet opening (26). [2] Cleaning gun (1) according to claim 1, wherein the cleaning gun (1) is designed such that the fluid flow can be controlled by at least a partial displacement of the flow guide device (6) relative to the housing (2), preferably in an actuation direction (B). [3] Cleaning gun (1) according to one of the preceding claims, wherein the actuating device (50) comprises a hand lever (52), wherein in the first actuation state the hand lever (52) is partially depressed and wherein in the second actuation state the hand lever (52) is more strongly, preferably completely, depressed. [4] Cleaning gun (1) according to one of the preceding claims, wherein the flow control device (6) is designed such that a fluid flow through the flow channel (4) from the inlet (8) to the outlet (10) can be prevented by the flow control device (6), in particular when the flow control device (6) or its components are in a closed position. [5] Cleaning gun (1) according to one of the preceding claims, wherein the valve assembly (18) comprises a first return element (22) with a first return force, wherein the first restoring element (22) counteracts the opening of the valve assembly (19) by the actuating device (50) by means of the first restoring force, wherein the closing piston (12) is pressed against a stop (32) by a second return element (30) with a second return force and is thus held in a closed position that blocks the second flow path (42), wherein the restoring force opposes an actuation of the closing piston (12) in an actuation direction (B) and thus an opening of the second flow path (42) by the actuating device (50), where the second restoring force is greater than the first restoring force. [6] Cleaning gun (1) according to one of the preceding claims, wherein the valve device (18) comprises a ball (20) with a spring (22), wherein the first flow path (41) leads through a space between the ball (20) and the closing piston (12), wherein advantageously a part of the actuating device (50), in particular a transmission means (54) of the actuating device (50), contacts the ball (20) directly or indirectly. [7] Cleaning gun (1) according to claim 6, wherein the ball (20) is biased by the spring (22), in particular against the direction of actuation (B), against the closing piston (12) and / or against the actuating device (50), in particular against the transmission means (54) of the actuating device (50). [8] Cleaning gun (1) according to one of claims 6 or 7, wherein the outlet opening (26) can be closed by the ball (20) of the valve device (18). [9] Cleaning gun (1) according to one of the preceding claims, wherein the second flow path leads around the closing piston (12). [10] Cleaning gun (1) according to one of the preceding claims, wherein the closing piston (12) is pre-tensioned by a tension spring (30) against the direction of actuation (B). [11] Cleaning gun (1) according to one of the preceding claims, wherein the flow guidance device (6) is designed such that, in the case of a fluid flow through the second flow path (42), a fluid flow through the first flow path (41) is also possible.

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