Device and method for dispensing a fluid

Abstract

Device (10) and method for dispensing a fluid, in particular for dispensing superheated steam, hot water or a liquid under low or high pressure, which device (10) comprises a fluid inlet (12), a fluid outlet (14) fluidly connected to the fluid inlet (12) via a fluid connection (16) and a valve assembly (18), which valve assembly (18) is arranged or configured between the fluid inlet (12) and the fluid outlet (14) for opening the fluid connection (16) between the fluid inlet (12) and the fluid outlet (14) in an open position and for closing the fluid connection (16) in a closed position, which device (10) further comprises an actuating device (20) for moving the valve assembly (18) from the open position to the closed position and vice versa, wherein the actuating device (20) comprises at least one first actuating element (22), characterized in thatthat the actuating device (20) comprises at least one second actuating element (24) and an actuation detection device (26), which is effectively connected to the at least one first actuating element (22) and the at least one second actuating element (24) and which is configured to detect actuation of the at least one first actuating element (22) and the at least one second actuating element (24), and that the actuating device (20) is configured to move the valve assembly (18) from the closed position to the open position only when the actuation detection device (26) detects actuation of the at least one second actuating element (24), while the actuation detection device (26) detects actuation of the at least one first actuating element (22).

Description

[0001] The present invention relates to a device for dispensing a fluid, in particular for dispensing superheated steam, hot water or a liquid under low or high pressure, which device comprises a fluid inlet, a fluid outlet fluidly connected to the fluid inlet via a fluid connection and a valve assembly, which valve assembly is arranged or configured between the fluid inlet and the fluid outlet for opening the fluid connection between the fluid inlet and the fluid outlet in an open position and for closing the fluid connection in a closed position, which device further comprises an actuating device for moving the valve assembly from the open position to the closed position and vice versa, wherein the actuating device comprises at least one first actuating element.wherein the actuating device comprises at least a second actuating element and an actuation detection device, which is effectively connected to the at least one first confirmation element and the at least one second actuating element and which is configured to detect an actuation of the at least one first actuating element and the at least one second actuating element.

[0002] Furthermore, the present invention relates to a method for dispensing a fluid with a device, in particular for dispensing superheated steam, hot water or a liquid under low or high pressure, which device comprises a fluid inlet and a fluid outlet fluidly connected to the fluid inlet via a fluid connection, which fluid connection is opened to dispense the fluid and which fluid connection is closed to prevent dispensing the fluid, which device further comprises an actuating device for opening and closing the fluid connection, wherein the actuating device comprises at least a first actuating element, wherein the actuating device comprises at least a second actuating element.

[0003] Devices of the type described above are known in a variety of forms. For example, they are used as steam cleaning devices or high-pressure cleaning devices to deliver hot steam or a cleaning fluid, especially water, under high pressure.

[0004] A particular problem with devices of the type described above is that the fluid dispensing should not only stop automatically, but must stop when a user releases the device or any part thereof. In known devices, this is typically achieved by requiring an actuator to be held continuously. When the actuator is released, the valve automatically closes to prevent fluid dispensing. This is especially important when the fluid being dispensed poses a risk of injuring people or damaging equipment, as is the case with the uncontrolled release of superheated steam, hot water, or high-pressure liquids.

[0005] However, continuous actuation of the actuator has the disadvantage that the user must constantly apply force to dispense the fluid. Therefore, continuous use of the device is limited and consequently requires a considerable effort from the user.

[0006] A safety device for a high-pressure liquid jet system is known from WO 96 / 39255 A1. An electronic circuit arrangement is described in US 3,651,391. Furthermore, a hand-held steam device is disclosed in WO 2015 / 197114 A1.

[0007] It is therefore an object of the present invention to improve a device or a method of the type described above in such a way that the device is easier to handle by a user without reducing the operational safety of the device.

[0008] This problem is solved according to the invention in a device of the type described above by the fact that the actuating device is designed to move the valve device from the closed position to the open position only when the actuating detection device detects an actuation of the at least one second actuating element, while the actuating detection device detects an actuation of the at least one first actuating element, and that the at least one first actuating element and the at least one second actuating element are arranged or designed on the device in such a way that one-handed operation of the device is possible, such that a user can grasp the device with one hand and simultaneously actuate the at least one first actuating element and the at least one second actuating element with the same hand if necessary.

[0009] The proposed embodiment according to the invention makes it possible, in particular, for a user to hold the device and, for example, actuate the at least one first actuating element. While actuating the at least one first actuating element, the user can then open the fluid connection by actuating the at least one second actuating element. In particular, it is not necessary to continuously actuate the second actuating element to hold the valve assembly in the open position. A simple actuation of the at least one second actuating element is sufficient for this purpose. For example, fluid can thus be dispensed without requiring significant effort from the user. Operational reliability of the device is ensured, in particular, by the fact that the fluid connection can only be opened when the at least one first actuating element is actuated.The actuating device must therefore first detect actuation of the at least one first actuating element and only moves the valve assembly, which may, for example, comprise a solenoid valve, from the closed position to the open position when actuation of the at least one second actuating element is detected while the at least one first actuating element is being actuated. According to the invention, the at least one first actuating element and the at least one second actuating element are arranged or designed on the device such that one-handed operation is possible. According to the invention, one-handed operation means that a user can grasp the device with one hand and, if necessary, actuate the at least one first actuating element and the at least one second actuating element simultaneously with the same hand.In particular, the actuating elements are arranged in such a way that a user can hold the device and then selectively actuate at least one second actuating element.

[0010] Particularly safe handling of the device can be achieved, in particular, by designing the at least one first actuating element as a user detection element. A user detection element serves, in particular, to reliably detect whether the device is actually being held or operated by a user. In this way, it can be ensured, in particular, that opening the fluid connection between the fluid inlet and fluid outlet is only possible when the first actuating element detects a user.

[0011] It is advantageous if the at least one second actuating element is designed as a valve actuator. The at least one second actuating element thus serves, in particular, to actuate the valve assembly, for example, to move it from the closed position to the open position and / or vice versa. As described, however, the prerequisite for the second actuating element to perform this function is that the first actuating element is continuously actuated by a user. The at least one second actuating element makes it possible, in particular, to selectively activate or deactivate the valve assembly, i.e., to selectively open or close the fluid connection, without requiring continuous actuation of the at least one second actuating element.

[0012] According to a further preferred embodiment of the invention, the actuating device can be configured to move the valve assembly from the open position to the closed position as soon as the actuation detection device no longer detects actuation of the at least one first actuating element. This further development enables, in particular, reliable and, above all, safe operation of the device, since the fluid connection is automatically closed as soon as the actuation detection device no longer detects actuation of the at least one first actuating element.If, for example, the at least one first actuating element is arranged or formed on a handle of the device, and a user releases the handle, this automatically leads to the closure of the fluid connection, since the condition for opening it is no longer met, as the at least one first actuating element is no longer actuated in this case. For the purposes of this application, a handle is understood to mean, in particular, anything that a user can grasp and hold by hand in order to operate the device. This also includes, in particular, the entire device if it is sufficiently small. For example, a computer mouse, due to its shape and size, constitutes a handle in its entirety.

[0013] Furthermore, it is advantageous if the actuating device is designed to move the valve assembly from the open position to the closed position when the actuation detection device detects actuation of at least one second actuating element while the actuating device detects actuation of at least one first actuating element. This enhancement allows a user, in particular, to selectively open and close the fluid connection by first actuating at least one second actuating element while at least one first actuating element is continuously actuated, thus opening the fluid connection and bringing the valve assembly into the open position. A further actuation of at least one second actuating element then moves the valve assembly from the open position to the closed position.In this way, a continuous fluid delivery function can be implemented by the device, requiring only the activation of the first or at least one actuating element. Fluid delivery can be switched on and off by selectively actuating the second or at least one actuating element. However, this requires that the first or at least one actuating element is already activated at the time the second or at least one actuating element is activated.

[0014] Furthermore, it is advantageous if the actuating device is designed to prevent or block the valve assembly from moving from the closed to the open position if the actuation detection device does not detect actuation of the at least one first actuating element. In particular, if the at least one first actuating element is designed as a user detection element, the discharge of fluid can thus be effectively prevented if the at least one first actuating element is not actuated. In other words, this ensures that activation of the valve assembly to move it from the closed to the open position is only possible if a user actuates the at least one first actuating element.Furthermore, the device may optionally include a locking or blocking mechanism to prevent the operation of the actuator and / or the valve. For example, the first actuator and / or the second actuator can be used as input elements to enter an activation code. Alternatively or additionally, further input elements can be provided to enter a security or unlock code to activate the device. This prevents unauthorized use or activation of the device.

[0015] In principle, it is possible to provide two, three, or more primary actuating elements. It is also possible to provide two, three, or more secondary actuating elements. The more actuating elements are provided, the more versatile the device becomes. In particular, different holding or grip positions can be specified, allowing a user to hold the device in various ways while still ergonomically and safely controlling the valve assembly for fluid delivery. However, to ensure consistent handling of the device, it can also be advantageous for the device to include only a single primary actuating element and / or only a single secondary actuating element.

[0016] To minimize the force required by a user to operate the actuators, it is advantageous if at least one first actuator and / or at least one second actuator are designed as electronic switching elements. All types of electronic switching elements suitable for detecting activation, for example, by touch, pressure, or heat detection, are conceivable. This list of possible methods for detecting the presence of a user's hand is not exhaustive.

[0017] It is advantageous if the electronic switching element is designed to be bounce-free. This ensures a high degree of reliability for the device, as it prevents operating errors, particularly those caused by unintentional multiple activation of, for example, at least one second actuating element.

[0018] Preferably, the electronic switching element is designed in the form of a mechanical switch or a capacitive sensor button. Mechanical switches or switching elements can be actuated by applying pressure. A capacitive sensor button has the particular advantage that no pressure is required. Touching or simply the presence of, for example, a user's hand is sufficient to generate an actuation signal, which can be detected and optionally evaluated, particularly by the actuation detection device. A capacitive sensor button can also be coated with a protective layer or arranged within a housing of the device. The position of the capacitive sensor button can be indicated to the user, in particular by a color or a special shape of the device.For example, such a capacitive sensor button can be arranged on a device area that a user must always touch when using the device to dispense a fluid, such as on a handle.

[0019] It is advantageous if at least one second actuating element is designed to generate an actuation signal and if the actuation detection device is designed to detect this signal. This enhancement makes it possible, in particular, to reliably detect the actuation of at least one second actuating element.

[0020] According to a further preferred embodiment of the invention, the at least one second actuating element can be configured to generate the actuation signal in the form of a rising switching edge or a falling switching edge as a result of actuation of the at least one second actuating element. A rising switching edge can be generated, in particular, when the unactuated actuating element is actuated, and a falling switching edge when the actuation of the at least one second actuating element is released. This has the particular advantage that the at least one second actuating element does not need to be continuously actuated to hold the valve assembly in the open position.A simple, brief actuation of at least one second actuating element optionally generates a rising or falling switching edge, whereby one or both can be used to be detected as an actuation signal by the actuation detection device.

[0021] It is advantageous if the at least one first actuating element defines a first touch-sensitive actuating surface and / or if the at least one second actuating element defines a second touch-sensitive actuating surface. This allows the at least one first actuating element and / or the at least one second actuating element to be actuated simply by touching the actuating surfaces, for example with a user's hand.

[0022] It is advantageous if the second touch-sensitive operating surface is smaller than the first. This minimizes the risk of incorrect activation of the device. Conversely, a first touch-sensitive operating surface that is larger, particularly significantly larger, than the second can ensure a high degree of user detection. In this case, it is irrelevant to the user whether they touch the device at a specific point or not. A defined touch is desired for the second touch-sensitive operating surface. To achieve this, it is preferably smaller than the first.

[0023] To avoid confusion when operating the actuators, it is advantageous if the first touch-sensitive actuation surface and the second touch-sensitive actuation surface are arranged spatially separated from each other on the device.

[0024] It is advantageous if the device has a handle and if the handle and the fluid outlet are arranged in a defined spatial relationship to each other. Such a design allows the user, in particular, to use the device precisely and to dispense the fluid in the desired manner and, especially, in a desired direction. Specifically, this arrangement enables the user to position and orient the fluid outlet as desired by holding and guiding the handle. The device itself can also form the handle, for example, if it is sufficiently small to be held in the hand by a user, similar to a computer mouse.

[0025] Particularly secure guidance of the device is possible if the handle and the fluid outlet are directly or indirectly connected. In particular, they can be rigidly connected. For example, the device can comprise a housing on which both the handle and the fluid outlet are located. For example, in a high-pressure cleaner, the handle and the fluid outlet can be arranged on or formed by a high-pressure gun, also known as a pistol grip.

[0026] The device is particularly easy for a user to operate because the at least one first actuating element and the at least one second actuating element are arranged or formed on the handle. When a user grasps the handle, they can automatically actuate the at least one first actuating element. If the at least one second actuating element is arranged accordingly, the user can actuate it by moving one of their fingers and positioning it on the at least one second actuating element, thus, for example, moving the valve device from the closed position to the open position or vice versa. Furthermore, the arrangement of the actuating elements on the handle allows for simple one-handed operation of the device.

[0027] It is advantageous if the handle has a gripping area for holding it with one hand and if the at least one first actuating element is located or formed on the gripping area. In this way, it is possible to use the first actuating element, in particular, as a user detection element. Only when a user grasps or touches the handle at the gripping area is the at least one first actuating element actuated, thus enabling the activation of the valve assembly to open the fluid connection between the fluid inlet and fluid outlet.

[0028] It is advantageous if the device includes a fluid reservoir or if the fluid inlet is designed to be connectable to a fluid reservoir or fluid source. This design makes it possible, in particular, to operate the device autonomously, i.e., remotely from a fluid source. If the fluid inlet is designed as a fluid connection, the device can be connected to a fluid reservoir or fluid source. This enables, in particular, continuous operation of the device, as fluid is continuously available for dispensing.

[0029] To use the device, particularly as a steam cleaner, it is advantageous for it to include a heating element for heating the dispensed fluid. A high-pressure cleaner, in particular, can also include a heating element to warm the pressurized fluid and thus achieve even better cleaning results. The heating element can, for example, heat water as the dispensed fluid so that it can be dispensed as hot water. The heating element can be designed, in particular, as an instantaneous water heater. In this case, it is especially advantageous for the device to include a pump to deliver the fluid to the instantaneous water heater.

[0030] Preferably, the heating device is designed as an evaporation unit for vaporizing the fluid. In particular, superheated steam can be generated when water is heated above its evaporation temperature. For example, the evaporation unit can be designed as a steam boiler.

[0031] In order to loosen dirt easily and without too much mechanical effort before removal, it is advantageous if the device is designed in the form of a steam cleaning device.

[0032] It is advantageous if the device includes a pressure pump for generating fluid pressure in the fluid to be dispensed. This makes it possible, in particular, to pressurize surfaces to be cleaned with the fluid in order to mechanically remove contaminants. The pressure pump is preferably designed to generate a fluid pressure that is higher than the pressure prevailing in the fluid before it flows through the pressure pump. Preferably, the pressure pump is designed to generate a fluid pressure of at least 3 bar, and in particular at least 5 bar.

[0033] Advantageously, the pressure pump is designed as a high-pressure pump to generate a fluid pressure of at least 50 bar, and in particular at least 100 bar. A device with such a pressure pump enables the cleaning of surfaces in a particularly simple and fluid-saving manner.

[0034] Advantageously, the device is designed in the form of a high-pressure cleaning unit. A high-pressure cleaning unit allows, in particular, the application of a pressurized fluid to the surfaces to be cleaned, thereby removing contaminants through mechanical action, namely by blasting.

[0035] According to a further preferred embodiment of the invention, the device may include a control and / or regulating unit for controlling and / or regulating the volume flow rate of the fluid to be dispensed and / or a physical property of the fluid. The physical property of the fluid may, in particular, be its pressure and temperature. Depending on the cleaning task, for example, the pressure and / or temperature as well as the volume flow rate of the fluid to be dispensed can thus be set independently of one another and in the desired manner.

[0036] It is advantageous if the control and / or regulating device is designed to specify one or more discrete values ​​of the volume flow rate of the fluid to be discharged or to continuously specify the volume flow rate.

[0037] For example, the control device can be designed to simply activate and deactivate the flow rate. The flow rate can then be determined, in particular, by the cross-section of the fluid outlet. A continuously variable flow rate has the advantage that only the amount of fluid actually required needs to be delivered.

[0038] A particularly compact device design can be achieved, in particular, by incorporating the actuating device into the control and / or regulating unit. The control and / or regulating unit can interact with at least one first actuating element and / or at least one second actuating element to selectively lock or unlock the device by entering a locking or unlocking code, for example, by selectively actuating the at least one first actuating element and / or at least one second actuating element in a predetermined sequence and / or duration for locking or unlocking. In this way, the control and / or regulating unit can, in particular, form part of a safety device that is, for example, activated in a default position and must first be selectively deactivated by a user to allow fluid dispensing.In particular, the safety device may include at least one further safety element with which the actuating device, in particular the at least one first actuating element and / or the at least one second actuating element, can be selectively deactivated or reactivated in order to prevent, for example, unintentional or unauthorized activation of the device, in particular the fluid discharge.

[0039] Furthermore, it is advantageous if the device includes a display unit for indicating at least one operating state of the device. For example, the display unit can indicate whether the valve is in the open and / or closed position. It can also indicate, in particular, whether a heating device or a pressure pump is activated or not. In particular, several and different operating states can be displayed over time. The display unit can, in particular, include a corresponding number of display elements for this purpose.

[0040] Preferably, the display device is designed to indicate an operating state that corresponds to the open position of the valve device. This allows a user of the device, in particular, to directly recognize, for example visually or audibly, whether the fluid connection between the fluid inlet and fluid outlet is open or not.

[0041] In particular, the valve assembly can also be configured to open and close the fluid outlet. Neither the fluid inlet nor the fluid outlet necessarily needs to have connections on the device that are directly visible to the user. The fluid inlet and fluid outlet can also be connections on the valve assembly that can then be connected, via appropriate additional fluid connections, to a fluid port for connecting, for example, to a fluid reservoir or a fluid source, or to a fluid dispensing nozzle.

[0042] It is advantageous if the display device is designed as an optical and / or acoustic display device for visually and / or acoustically indicating at least one operating state of the device. In this way, a user can be visually and / or acoustically informed, in particular, of the operating state of the device, for example, whether fluid is being dispensed or not, or whether one or more additional functions of the device are active or not.

[0043] The device can be designed to be simple and compact, especially if the display unit includes at least one light source and / or at least one acoustic signal generator. The acoustic signal generator can be in the form of a loudspeaker. The at least one light source can be in the form of a light-emitting diode or a display.

[0044] To make operation as clear as possible for the user, it is advantageous if the optical display device is arranged or designed in close proximity to the at least one actuating element on the device. In particular, the optical display device can be arranged or designed adjacent to or directly adjacent to the at least one second actuating element.

[0045] The problem set out at the outset is further solved according to the invention in a method of the type described at the outset by the fact that the at least one first actuating element and the at least one second actuating element are arranged or designed on the device in such a way that one-handed operation of the device is possible, such that a user can grasp the device with one hand and simultaneously, if necessary, actuate the at least one first actuating element and the at least one second actuating element simultaneously with the same hand, and that, to open the fluid connection, the at least one second actuating element is actuated while the at least one first actuating element is actuated.

[0046] As explained in detail above, this allows the dispensing of fluid by a user to be handled safely. In particular, this also makes it possible to implement a continuous dispensing function without the user having to continuously operate at least one other actuator.

[0047] Furthermore, the use of one of the devices described above for carrying out one of the procedures described above is proposed. The described devices allow for the simple and safe dispensing of a fluid.

[0048] The foregoing description therefore includes in particular the embodiments of devices and methods for dispensing a fluid defined below in the form of numbered sentences: 1. Device (10) for dispensing a fluid, in particular for dispensing superheated steam, hot water or a liquid under low or high pressure, which device (10) comprises a fluid inlet (12), a fluid outlet (14) fluidly connected to the fluid inlet (12) via a fluid connection (16) and a valve assembly (18), which valve assembly (18) is arranged or configured between the fluid inlet (12) and the fluid outlet (14) for opening the fluid connection (16) between the fluid inlet (12) and the fluid outlet (14) in an open position and for closing the fluid connection (16) in a closed position, which device (10) further comprises an actuating device (20) for moving the valve assembly (18) from the open position to the closed position and vice versa, wherein the actuating device (20) comprises at least one first actuating element (22), characterized in thatthat the actuating device (20) comprises at least one second actuating element (24) and an actuation detection device (26), which is effectively connected to the at least one first actuating element (22) and the at least one second actuating element (24) and which is configured to detect actuation of the at least one first actuating element (22) and the at least one second actuating element (24), and that the actuating device (20) is configured to move the valve assembly (18) from the closed position to the open position only if the actuation detection device (26) detects actuation of the at least one second actuating element (24), while the actuation detection device (26) detects actuation of the at least one first actuating element (22). 2. Device according to sentence 1, characterized in that,that the at least one first actuating element (22) is designed in the form of a user recognition element (32). 3. Device according to one of the preceding sentences, characterized in that the at least one second actuating element (24) is designed in the form of a valve actuating element (34). 4. Device according to one of the preceding sentences, characterized in that the actuating device (20) is designed to move the valve assembly (18) from the open position to the closed position as soon as the actuating detection device (26) no longer detects actuation of the at least one first actuating element (22). 5. Device according to one of the preceding sentences, characterized in that the actuating device (20) is designed to move the valve assembly (18) from the open position to the closed position,when the actuation detection device (26) detects actuation of at least one second actuating element (24) while the actuation detection device (26) detects actuation of at least one first actuating element (22). 6. Device according to one of the preceding sentences, characterized in that the actuating device (20) is configured to prevent or block the valve assembly (18) from moving from the closed position to the open position when the actuation detection device (26) does not detect actuation of at least one first actuating element (22). 7. Device according to one of the preceding sentences, characterized by a single first actuating element (22) and / or a single second actuating element (24). 8. Device according to one of the preceding sentences, characterized in thatthat the at least one first actuating element (22) and / or the at least one second actuating element (24) are designed in the form of an electronic switching element (46). 9. Device according to sentence 8, characterized in that the electronic switching element (46) is designed to be bounce-free. 10. Device according to sentence 8 or 9, characterized in that the electronic switching element is designed in the form of a mechanical switch (48) or in the form of a capacitive sensor button (50). 11. Device according to one of the preceding sentences, characterized in that the at least one second actuating element (24) is designed to generate an actuating signal (38) and that the actuating detection device (26) is designed to detect the actuating signal (38). 12. Device according to sentence 11, characterized in thatthat the at least one second actuating element (24) is configured to generate the actuation signal (38) in the form of a rising switching edge (36) or in the form of a falling switching edge (40) as a result of actuation of the at least one second actuating element (24). 13. Device according to one of the preceding sentences, characterized in that the at least one first actuating element (22) and the at least one second actuating element (24) are arranged or configured on the device (10) such that one-handed operation of the same is possible. 14. Device according to one of the preceding sentences, characterized in that the at least one first actuating element (22) defines a first touch-sensitive actuating surface (64) and / or that the at least one second actuating element (24) defines a second touch-sensitive actuating surface (66). 15. Device according to sentence 14, characterized in thatthat the second touch-sensitive actuation surface (66) is smaller than the first touch-sensitive actuation surface (64). 16. Device according to sentence 14 or 15, characterized in that the first touch-sensitive actuation surface (64) and the second touch-sensitive actuation surface (66) are arranged spatially separated from each other on the device (10). 17. Device according to one of the preceding sentences, characterized in that the device (10) has a handle (60) and that the handle (60) and the fluid outlet (14) are arranged in a defined spatial relationship to each other. 18. Device according to sentence 17, characterized in that the handle (60) and the fluid outlet (14) are directly or indirectly connected to each other, in particular immovably. 19. Device according to sentence 17 or 18, characterized in thatthat the at least one first actuating element (22) and the at least one second actuating element (24) are arranged or formed on the handle (60). 20. Device according to one of sentences 17 to 19, characterized in that the handle (60) has a grip area (62) for holding the handle (60) with one hand and that the at least one first actuating element (22) is arranged or formed on the grip area (62). 21. Device according to one of the preceding sentences, characterized in that the device (10) comprises a fluid reservoir (70) or that the fluid inlet (12) is designed to be connectable to a fluid reservoir (70) or a fluid source (72). 22. Device according to one of the preceding sentences, characterized in that the device (10) comprises a heating device (78) for heating the fluid to be dispensed. 23. Device according to sentence 22, characterized in thatthat the heating device (78) is designed in the form of an evaporation device (80) for evaporating the fluid. 24. Device according to one of the preceding sentences, characterized in that the device (10) is designed in the form of a steam cleaning device (82). 25. Device according to one of the preceding sentences, characterized in that the device (10) comprises a pressure pump (84) for generating a fluid pressure in the fluid to be discharged. 26. Device according to sentence 25, characterized in that the pressure pump (84) is designed in the form of a high-pressure pump (86) for generating a fluid pressure of at least 50 bar, in particular at least 100 bar. 27. Device according to one of the preceding sentences, characterized in that the device (10) is designed in the form of a high-pressure cleaning device (88). 28. Device according to one of the preceding sentences,characterized by a control and / or regulating device (90) for controlling and / or regulating a volume flow rate of the fluid to be dispensed and / or a physical quantity of the fluid, in particular pressure and temperature. 29. Device according to sentence 28, characterized in that the control and / or regulating device (90) is configured for specifying one or more discrete values ​​of the volume flow rate of the fluid to be dispensed or for continuously specifying the volume flow rate. 30. Device according to sentence 28 or 29, characterized in that the control and / or regulating device (90) comprises the actuating device (20). 31. Device according to one of the preceding sentences, characterized by a display device (92) for indicating at least one operating state (A, B, C, D, E, F) of the device (10). 32. Device according to sentence 31, characterized in that the display device (92) is configured for indicating an operating state (B, C).which is associated with the opening position of the valve device (18). 33. Device according to sentence 31 or 32, characterized in that the display device (92) is designed in the form of an optical and / or acoustic display device (92) for optically and / or acoustically indicating the at least one operating state (B, C) of the device (10). 34. Device according to one of sentences 31 to 33, characterized in that the display device (92) comprises at least one light element and / or at least one acoustic signal generator, in particular a loudspeaker. 35. Device according to sentence 33 or 34, characterized in that the optical display device (92) is arranged or designed on the device (10) in close proximity, in particular adjacent to or directly adjoining, to the at least one second actuating element (24). 36. Method for dispensing a fluid with a device (10), in particular for dispensing superheated steam,Hot water or a liquid under low or high pressure, which device (10) comprises a fluid inlet (12) and a fluid outlet (14) fluidly connected to the fluid inlet (12) via a fluid connection (16), which fluid connection (16) is opened to discharge the fluid and which fluid connection is closed to prevent discharge of the fluid, which device (10) further comprises an actuating device (20) for opening and closing the fluid connection (16), wherein the actuating device (20) comprises at least one first actuating element (22), characterized in that the actuating device (20) comprises at least one second actuating element (24) and that, to open the fluid connection (16), the at least one second actuating element (24) is actuated while the at least one first actuating element (22) is actuated.

[0049] The following description of preferred embodiments of the invention, in conjunction with the drawings, serves for further explanation. The drawings show: Figure 1: A schematic representation of an embodiment of a steam cleaning device; Figure 2: A schematic representation of another embodiment of a steam cleaning device; Figure 3: A schematic representation of different actuation states of the actuating device; Figure 4: A schematic representation of an embodiment of a device for dispensing a fluid; Figure 5: A schematic representation of the structure of an actuating device; Figure 6: A schematic representation of another embodiment of an actuating device; Figure 7: A schematic representation of various embodiments of electronic switching elements; Figure 8: A schematic representation of a possible arrangement of the actuating device on a handle of the device; Figure 9: A schematic representation of another embodiment of a device whose fluid inlet can be connected to a fluid reservoir or a fluid source;Figure 10: a schematic representation of another embodiment of a device with a fluid accumulator; Figure 11: a schematic representation of another embodiment of a device in the form of a steam cleaning device; Figure 12: a schematic representation of another embodiment of a device in the form of a high-pressure cleaning device; Figure 13: a schematic representation of another embodiment of a device with a control and / or regulating device; Figure 14: a schematic representation of another embodiment of a device with a display device; and Figure 15: a schematic representation of another embodiment of a device with a display device.

[0050] An embodiment of a device 10 for dispensing a fluid comprises a fluid inlet 12 and a fluid outlet 14. The fluid inlet 12 and the fluid outlet 14 are fluidly connected to each other via a fluid connection 16.

[0051] A valve assembly 18 is arranged or configured between the fluid inlet 12 and the fluid outlet 14 for opening the fluid connection 16 in an open position and for closing the fluid connection 16 in a closed position.

[0052] In one embodiment, the device 10 further comprises an actuating device 20 for transferring the valve device 18 from the open position to the closed position and vice versa.

[0053] In one embodiment, the actuating device 20 comprises a first actuating element 22 and a second actuating element 24.

[0054] In one embodiment of the device 10, the actuating device 20 comprises an actuating detection device 26, which is connected to the first actuating element and to the second actuating element 24 via connecting lines 28 and 30.

[0055] The actuation detection device 26 is designed to detect an actuation of the first actuating element 22 and the second actuating element 24.

[0056] The actuating device 20 is further designed to transfer the valve device 18 from the closed position to the open position only if the actuating detection device 26 detects an actuation of the second actuating element 24, while the actuating detection device 26 also detects an actuation of the first actuating element 22.

[0057] In one embodiment, the actuating device 20 comprises two or more first actuating elements 22.

[0058] In another embodiment, the actuating device 20 comprises two or more second actuating elements 24. In principle, the number of first actuating elements 22 and second actuating elements 24 can be arbitrarily chosen.

[0059] In another embodiment, the first actuating element is designed as a user detection element 32. The user detection element 32 serves, in particular, to determine whether the device 10 is being used by an operator or not. It thus detects whether a user is actuating the first actuating element 22.

[0060] In another embodiment, the second actuating element 24 is designed in the form of a valve actuating element 34. By actuating the second actuating element 24, a user can actuate the valve device 18, provided that the first actuating element 22 has already been actuated.

[0061] Furthermore, in one embodiment, the actuating device 20 is designed to transfer the valve device 18 from the open position to the closed position as soon as the actuating detection device 26 no longer detects actuation of the first actuating element 22.

[0062] Furthermore, in one embodiment, the actuating device 20 is designed such that it moves the valve device 18 from the open position to the closed position when the actuating detection device 26 detects an actuation of the second actuating element 24, while the actuating detection device 26 detects an actuation of the first actuating element 22.

[0063] Furthermore, in one embodiment, the actuating device 20 is designed in such a way that it prevents or blocks the valve device 18 from moving from the closed position to the open position if the actuating detection device does not detect any actuation of the first actuating element 22.

[0064] In one embodiment, the actuating device 20 comprises a single first actuating element 22 and a single second actuating element 24.

[0065] In one embodiment, the actuating device 20 is particularly designed to control the six in Figure 3 to realize the schematically represented operating states A, B, C, D, E and F.

[0066] In Figure 3The diagram shows, one above the other, the actuation of the first actuating element 22, the actuation of the second actuating element 24, and the position of the valve assembly 18. The value 0 indicates the "unactuated" position for actuating elements 22 and 24, and the value 1 indicates the "actuated" position. For the valve assembly, the value 0 corresponds to the closed position, and the value 1 to the open position.

[0067] In operating state A, neither the first actuating element 22 nor the second actuating element 24 is actuated. The valve assembly 18 closes the fluid connection 16; it therefore assumes the closed position.

[0068] At time t 1, the first actuating element 22 is actuated. Until time t 2, when the second actuating element 24 is actuated, the valve assembly 18 remains in the closed position.

[0069] By actuating the second actuating element 24 at time t 2, in which the first actuating element 22 is already actuated, a rising switching edge 36 of an actuating signal 38 generated by the second actuating element 24 is detected by the actuating detection device 26 and activates the valve device 18, thus transferring it from the closed position to the open position at time t 2.

[0070] If the first actuating element 22 remains actuated and the second actuating element 24 is no longer actuated at time t 3, the valve assembly 18 remains in the open position until the second actuating element 24 is actuated again and generates an actuation signal 38 with a rising switching edge 36, which is detected by the actuation detection device 26. This second actuation signal from the second actuating element 24 thus closes the fluid connection 16 through the valve assembly 18.

[0071] At time t 5, the actuation of the second actuating element 24 is released. However, the falling switching edge 40 of the actuating signal 38 is irrelevant for the valve assembly 18 and its operating state.

[0072] Between time t 2 and time t 4, the valve device 18 assumes operating state B, i.e. the open position.

[0073] If, at time t 6, while the first actuating element 22 is still actuated, the second actuating element 24 is actuated again, the actuation detection device 26 detects the rising switching edge 36 of the actuation signal 38. Since the first actuating element 22 was already actuated before the actuating element 24 and is still actuated, the valve device is returned from the closed position to the open position at time t 6.

[0074] At time t 7, the actuation of the second actuating element 24 is released. However, the falling switching edge 40 of the actuating signal 38 has no influence on the switching position of the valve device 18.

[0075] The valve assembly 18 can be moved from the open position back to the closed position by a further rising switching edge 36 of a further actuating signal 38 of the second actuating element 24, as is the case at time t 4 and has already been described.

[0076] However, the special safety function of the device 10 leads to a transition of the valve assembly 18 from the open position to the closed position even if the actuation of the first actuating element 22 is released at time t 8. A falling switching edge 44 of the actuation signal 42, which is detected by the actuation detection device 26.

[0077] At time t 7, the actuation of the second actuating element 24 is released. However, the falling switching edge 40 of the actuating signal 38 has no influence on the switching position of the valve device 18.

[0078] The valve assembly 18 can be moved from the open position back to the closed position by a further rising switching edge 36 of a further actuating signal 38 of the second actuating element 24, as is the case at time t 4 and has already been described.

[0079] However, the special safety function of the device 10 leads to a transition of the valve assembly 18 from the open position to the closed position even if the actuation of the first actuating element 22 is released at time t 8. A falling switching edge 44 of the actuation signal 42, which is detected by the actuation detection device 26, leads to the immediate transition of the valve assembly 18 from the open position to the closed position at time t 8.

[0080] The fluid connection 16 is therefore closed when either the actuation of the first actuating element 22 is cancelled or when, while the actuation of the first actuating element 22 continues, the second actuating element 24 is actuated again.

[0081] If the second actuating element 24 is actuated again at time t 9, but the first actuating element 22 is not actuated at time t 9, the valve assembly 18 remains in the closed position.

[0082] If, at time t 10, in addition to the actuation of the second actuating element 24, the first actuating element 22 is also actuated, the valve assembly 18 nevertheless remains in the closed position. The prerequisite for actuating the valve assembly 18 is not met, namely that the first actuating element 22 must already be actuated when the second actuating element 24 is actuated.

[0083] Naturally, neither the removal of the actuation of the first actuating element 22 nor of the second actuating element 24 at time t 11 leads to any change in the operating state of the valve assembly 18.

[0084] Actuation of the first actuating element 22 at time t 12 without actuation of the second actuating element 24 also does not lead to any change in the operating state of the valve device 18.

[0085] If the actuation of the first actuating element 22 is cancelled at time t 13, the valve assembly remains in the closed position.

[0086] If at time t 14 the second actuating element 24 is actuated and the first actuating element 22 remains unactuated, the valve device 18 also remains in the closed position, even if at time t 15 the actuation of the second actuating element 24 is released.

[0087] Between time t6 and time t8, the valve assembly 18 assumes operating state C. The fluid connection 16 is open, and the valve assembly 18 assumes the open position.

[0088] The special feature at time t 8 is that the valve assembly 18 automatically moves from the open position to the closed position when the actuation of the first actuating element 22 is released. The falling switching edge 44 of the actuating signal 42 of the first actuating element 22 thus defines an automatic "OFF" function of the device 10.

[0089] The fluid supply is automatically interrupted as soon as the first actuating element 22 is released. If the first actuating element 22 is designed as a user detection element 32, the release of the detection of a user operating the device 10 automatically leads to the interruption of the fluid supply by closing the fluid connection 16 through the movement of the valve assembly 18 from the open position to the closed position.

[0090] Between time t 9 and time t 11, the device 10 assumes operating state D. The valve assembly 18 assumes the closed position.

[0091] The operating state E between time t 12 and time t 13 also corresponds to the closed position of the valve device 18.

[0092] The operating state F between time t 14 and t 15 also corresponds to the closed position of the valve device 18.

[0093] In operating states D and F, the non-actuation of the first actuating element 22 blocks the activation of the valve assembly 18, i.e., the opening of the fluid connection 16. In this way, it is ensured that the valve assembly 18 can only assume the open position when the first actuating element 22 is actuated.

[0094] In one embodiment, the first actuating element 22 and the second actuating element 24 are designed in the form of an electronic switching element 46. In one embodiment, the electronic switching element 46 is designed in the form of a bounce-free electronic switching element 46.

[0095] In another embodiment, the electronic switching element 46 can be designed in the form of a mechanical switch or push button 48, for example in the form of a microswitch, in the form of a capacitive sensor push button 50, in the form of an ultrasonic proximity sensor 52, in the form of a radar sensor 54, in the form of a fork light barrier 56 or in the form of a reflective light switch 58.

[0096] The in Figure 7The geometries shown are purely exemplary. The electronic switching elements 46 can be implemented in any geometry, for example, they can be planar or three-dimensionally curved, oval, circular, polygonal, or have any edge contour.

[0097] As already mentioned in connection with Figure 3 As explained, the second actuating element 24 is designed to generate an actuation signal 38, which can be detected by the actuation detection device 26.

[0098] In particular, in one embodiment, it is provided that the second actuating element 24 is designed to generate an actuating signal 38 with a rising switching edge 36 or an actuating signal in the form of a rising switching edge 36 or an actuating signal in the form of a falling switching edge 40 as a result of actuating the second actuating element 24.

[0099] In another embodiment, the first actuating element 22 is spatially assigned to the second actuating element 24, for example in the case of a handle 60 of the device 10.

[0100] In one embodiment, the handle 60 defines a grip area 62 for holding the handle 60 with one hand of a user. The first actuating element 22 is arranged on the grip area 62.

[0101] If, in an embodiment, the second actuating element 24 is also arranged or formed on the grip area 62 or on the handle 60, this enables a user to easily operate the device with one hand, since he can contact and thus actuate both the first actuating element 22 and the second actuating element 24 with one hand or the fingers of his hand.

[0102] In one embodiment, the device 10 forms the entire handle 60 by being sufficiently small to be held in the hand by a user as a whole, similar to a computer mouse.

[0103] In one embodiment, the first actuating element 22 defines a first touch-sensitive actuating surface 64. The second actuating element 24 defines a second touch-sensitive actuating surface 66.

[0104] In one embodiment of the device 10, the second touch-sensitive actuation surface 66 is smaller than the first touch-sensitive actuation surface 64.

[0105] Furthermore, in another embodiment, the first touch-sensitive actuation surface 64 and the second touch-sensitive actuation surface 66 are arranged spatially separated from each other on the device 10.

[0106] In a further embodiment of the device 10, the handle 60 and the fluid outlet 12 are in a defined spatial relationship to each other. In particular, they are immovably connected to each other directly or indirectly.

[0107] In a further embodiment of the device 10, the fluid inlet 12 can be connected to a fluid storage device 70 or a fluid source 72 via a connecting line 68. For example, the fluid storage device 70 can be a tank 74, in particular a water tank. The fluid source 72 can be, in particular, a water connection 76 of a water supply network, a water source, a stream, or a lake.

[0108] In another embodiment, the device 10 itself includes a fluid storage tank 70. This allows the device 10 to be operated independently of a water supply network.

[0109] In a further embodiment of a device 10 for dispensing a fluid, a heating device 78 is provided for heating the fluid to be dispensed. For example, the heating device 78 can be arranged to heat the fluid contained in the fluid reservoir 70 of the device 10. The heating device can be used, in particular, to heat water, for example, to a temperature below its boiling point. The water heated in this way can then be dispensed by the device in the form of so-called hot water.

[0110] In one embodiment, the heating device 78 is designed in the form of a flow heater, which in particular makes it possible to heat fluid flowing from a fluid storage tank 70 or a fluid source 72, which is conveyed, for example, by a pump.

[0111] In one embodiment, the heating device 78 is designed in the form of an evaporation device 80 for evaporating the fluid. In this case, the device 10 forms a steam cleaning device 82.

[0112] In another embodiment, the device 10 comprises a pressure pump 84 for generating a fluid pressure in the fluid to be discharged.

[0113] In one embodiment, the pressure pump 84 is designed to generate a fluid pressure that is higher than the pressure prevailing in the fluid before it flows through the pressure pump 84. In one embodiment, the pressure pump 84 is designed to generate a fluid pressure of at least 3 bar, in particular at least 5 bar.

[0114] In one embodiment, the pressure pump 84 is designed as a high-pressure pump 86 to generate a fluid pressure of at least 100 bar. In this way, a high-pressure cleaning device 88 can be designed.

[0115] Another embodiment of a device 10 comprises a control and / or regulating device 90 for controlling and / or regulating a volume flow of the fluid to be delivered and / or a physical quantity of the fluid, in particular pressure and temperature.

[0116] In one embodiment, the control and / or regulating device 90 is designed to specify one or more discrete values ​​of the volume flow rate of the fluid to be discharged.

[0117] In another embodiment, the control and / or regulating device 90 is designed to continuously specify a volume flow rate.

[0118] Furthermore, in another embodiment of the device 10, the control and / or regulating device 90 includes the actuating device 20.

[0119] One embodiment of the device 10 further comprises a display device 92 for displaying at least one operating state of the device 10.

[0120] In one embodiment of the device 10, the display device 92 is designed to indicate an operating state which is associated with the opening position of the valve device 18.

[0121] For example, the display device 92 could indicate operating states B and C, as exemplified in Figure 3 They are marked, display.

[0122] Furthermore, in one embodiment of the device 10, the display device 92 is designed in the form of an optical and / or acoustic display device 92 for optically and / or acoustically indicating the at least one operating state of the device 10.

[0123] In a further embodiment, the display device 92 comprises one or more light elements 94 and optionally or alternatively one or more acoustic signal generators 96, for example in the form of loudspeakers.

[0124] Furthermore, in another embodiment of a device 10, the optical display device 92 is arranged or configured in close proximity to the second actuating element 24. In particular, it can be arranged or configured adjacent to or directly adjoining the second actuating element 24.

[0125] Another embodiment of a device 10 is shown in Figure 1 schematically represented in the form of a steam cleaning device 82.

[0126] The steam cleaning device 82 comprises a housing 100, on which a handle 60 with a through-handle is formed.

[0127] The steam cleaning device 82 is designed in the form of a handheld steam cleaning device 82. It can be connected to a power supply via an electrical connection cable 102 to supply the steam cleaning device 82 with energy.

[0128] A fluid storage unit 70 in the form of a steam boiler 104 is arranged in the housing 100. This includes a heating device 78 for heating the fluid 98 contained in the steam boiler 104. The fluid 98 is water in this case.

[0129] A valve assembly 18 is arranged on the steam boiler 104, the connection of which forms the fluid inlet 12. The fluid connection 16 connects the valve assembly 18, which is designed in the form of a solenoid valve 106, to the fluid outlet 14 leading out of the housing 100, through which superheated steam can be released.

[0130] The first actuating element 22 is designed in the form of a first touch-sensitive actuating surface 64, namely on the grip area 62 of the handle 60.

[0131] Adjacent to the first actuating surface 64 in the direction of a top surface of the steam cleaning device 82 is a second touch-sensitive actuating surface 66 which defines the second actuating element 24.

[0132] The actuating elements 22 and 24 are designed in the form of capacitive contact sensors.

[0133] The steam cleaning device 82 further comprises a display device 92 with a light element 94, which is arranged adjacent to the second actuating element 22 for indicating the operating states B and C, which correspond to the opening position of the valve device 18.

[0134] A user can grasp the handle 60 with one hand, and in particular by moving his thumb, which initially touches the first actuating surface 64, to the second actuating surface 66, he can activate the release of hot steam by opening the fluid connection 16.

[0135] To keep the steam cleaner 82 in fluid dispensing mode, it is not necessary to continuously touch the second actuation surface 66. It is sufficient to hold the steam cleaner 82 in the hand so that the first actuation surface 64 is touched.

[0136] To switch off the hot steam output, the solenoid valve 106 is closed by either touching the second actuating surface 66 again or by switching off the steam cleaner 82 and releasing the handle 60. The first option corresponds to the procedure at time t 4, as described in Figure 3 The second alternative is shown as an example at time t 8 .

[0137] Another embodiment of a steam cleaning device 82 is shown by way of example in Figure 2 It is depicted in the form of a mobile steam cleaning device 82 with a housing 100 on which several rollers 108 are arranged.

[0138] Regarding the designation of the steam cleaning device 82 in Figure 2 Are identical reference symbols used for identical or similar parts as for the designation of the steam cleaning device 82? Figure 1 .

[0139] The steam boiler 104 is located in the housing 100. The steam cleaning device 82 can be connected to a power supply via the connecting cable 102, which is routed into the housing 100.

[0140] A hose 110 extends out of the housing 100, in which a fluid connection 16 and at least one control line 112 are guided.

[0141] The fluid connection 16 connects the steam boiler 104 with its first end, which defines the fluid inlet 12, to the valve assembly 18 in the form of the solenoid valve 106, which is located in a handle 60 arranged at the end of the hose 110.

[0142] A short fluid connection 16 connects the solenoid valve 106 to the fluid outlet 14, which is led out of a handle housing 114 of the handle 60.

[0143] The first actuating element 22 and the second actuating element 24 are arranged on the handle 60 in the form of first and second touch-sensitive actuating surfaces 64 and 66. In particular, these can be arranged within the handle housing 114, as they are in the steam cleaning device 82. Figure 1 can be arranged within the housing 100.

[0144] The actuating elements 22 and 24 are designed in the form of capacitive contact sensors and are connected to the actuation detection device 26 for control purposes.

[0145] The second actuation surface 66 is significantly larger than the first actuation surface 64. This is also the case with the steam cleaning device 82. Figure 1 as intended.

[0146] The second actuation surface 66 borders the first actuation surface 64.

[0147] Adjacent to the second actuation surface 66 is a light element 94 of a display device 92. The display device 92 signals the operating states B and C to the user as shown schematically in Figure 3 are shown and explained above. Optionally or alternatively, the display device 92 can also be configured to display one or more of the operating states A, D, E and F.

[0148] The actuating devices 20 described in connection with various embodiments of devices 10 can also be used in particular with other types of devices, for example with devices with mechanically actuated cutting elements such as in particular chainsaws, hedge shears, lawn edge shears, lawn trimmers or the like.

[0149] These devices can also be equipped with first and second actuating elements in the manner described. Instead of actuating a valve assembly 18, a motor can be activated or deactivated to drive the cutting elements.

[0150] For example, it is a device for shredding material, in particular for cutting grass or wood, which device comprises a drive connected to the at least one cutting element and an actuating device for activating the drive so that it assumes a working position and for deactivating the drive so that it assumes a rest position, wherein the actuating device comprises at least one first actuating element and at least one second actuating element, wherein the actuating device comprises an actuation detection device which is effectively connected to the at least one first actuating element and the at least one second actuating element and which is configured to detect an actuation of the at least one first actuating element and the at least one second actuating element.and wherein the actuating device is designed to transfer the drive from the rest position to the working position only if the actuating detection device detects an actuation of at least one second actuating element, while the actuating device detects an actuation of at least one first actuating element.

[0151] The principle of continuous operation, i.e., without having to actuate two actuators simultaneously, can thus be easily transferred to other devices. In particular, this function, as with the devices 10 described above, can be implemented exclusively electronically. It can prevent activation of the respective device 10 with comparable reliability to mechanical safety devices, using purely electronic means. Reference symbol list

[0152] 10 Device 12 Fluid inlet 14 Fluid outlet 16 Fluid connection 18 Valve device 20 Actuating device 22 First actuator 24 Second actuator 26 Actuating detection device 28 Connecting line 30 Connecting line 32 User detection element 34 Valve actuator 36 Rising switching edge 38 Actuating signal 40 Falling switching edge 42 Actuating signal 44 Falling switching edge 46 Electronic switching element 48 Switch 50 Capacitive sensor button 52 Ultrasonic proximity sensor 54 Radar sensor 56 Fork light barrier 58 Reflective light button 60 Handle 62 Grip area 64 First actuating surface 66 Second actuating surface 68 Connecting line 70 Fluid reservoir 72 Fluid source 74 Tank 76 Water connection 78 Heating unit 80 Evaporation unit 82 Steam cleaner 84 Pressure pump 86 High-pressure pump 88 High-pressure cleaner 90 Control and / or regulating unit 92 Display unit 94 Light element 96 Signal transmitter 98 Fluid 100 Housing 102 Connection cable 104 Steam boiler 106 Solenoid valve108Rolls 110Hose 112Control cable 114Handle housing

Claims

1. Apparatus (10) for delivering a fluid, in particular for delivering superheated steam, hot water, or a liquid under low pressure or under high pressure, which apparatus (10) comprises a fluid inlet (12), a fluid outlet (14) operatively connected to the fluid inlet (12) for fluid communication therewith via a fluid connection (16), and a valve device (18), which valve device (18) is arranged or formed between the fluid inlet (12) and the fluid outlet (14) for opening the fluid connection (16) between the fluid inlet (12) and the fluid outlet (14) in an opening position and for closing the fluid connection (16) in a closing position, which apparatus (10) further comprises an actuation device (20) for transferring the valve device (18) from the opening position to the closing position and vice versa, wherein the actuation device (20) comprises at least one first actuation member (22), wherein the actuation device (20) comprises at least one second actuation member (24) and an actuation detection device (26) which is operatively connected to the at least one first actuation member (22) and to the at least one second actuation member (24) for control thereof and which is configured for detecting an actuation of the at least one first actuation member (22) and the at least one second actuation member (24), characterized in that the actuation device (20) is configured for transferring the valve device (18) from the closing position to the opening position only when the actuation detection device (26) detects an actuation of the at least one second actuation member (24) while the actuation detection device (26) detects an actuation of the at least one first actuation member (22), and in that the at least one first actuation member (22) and the at least one second actuation member (24) are arranged or formed at the apparatus (10) such that a one-handed operation thereof is possible such that a user can grasp the apparatus with one hand and simultaneously actuate, as needed, the at least one first actuation member (22) and the at least one second actuation member (24) simultaneously with the same hand.

2. Apparatus in accordance with claim 1, characterized in that a) the at least one first actuation member (22) is configured in the form of an operator recognition member (32), and / or b) the at least one second actuation member (24) is configured in the form of a valve actuation member (34).

3. Apparatus in accordance with any one of the preceding claims, characterized in that the actuation device (20) is configured for: a) transferring the valve device (18) from the opening position to the closing position once the actuation detection device (26) no longer detects an actuation of the at least one first actuation member (22), and / or b) transferring the valve device (18) from the opening position to the closing position when the actuation detection device (26) detects an actuation of the at least one second actuation member (24) while the actuation detection device (26) detects an actuation of the at least one first actuation member (22), and / or c) preventing or blocking the valve device (18) from being transferred from the closing position to the opening position when the actuation detection device (26) does not detect an actuation of the at least one first actuation member (22).

4. Apparatus in accordance with any one of the preceding claims, characterized in that the at least one first actuation member (22) and / or the at least one second actuation member (24) is configured in the form of an electronic switching element (46), in particular wherein the electronic switching element (46) a) is of bounce-free configuration, and / or b) is configured in the form of a mechanical switch (48) or in the form of a capacitive sensor button (50).

5. Apparatus in accordance with any one of the preceding claims, characterized in that the at least one second actuation member (24) is configured for generating an actuation signal (38) and in that the actuation detection device (26) is configured for detecting the actuation signal (38), in particular wherein the at least one second actuation member (24) is configured for generating the actuation signal (38) in the form of a rising switching edge (36) or in the form of a falling switching edge (40) as a result of an actuation of the at least one second actuation member (24).

6. Apparatus in accordance with any one of the preceding claims, characterized in that the at least one first actuation member (22) defines a first touch-sensitive actuation surface (64) and / or in that the at least one second actuation member (24) defines a second touch-sensitive actuation surface (66).

7. Apparatus in accordance with claim 6, characterized in that a) the second touch-sensitive actuation surface (66) is smaller than the first touch-sensitive actuation surface (64), and / or b) the first touch-sensitive actuation surface (64) and the second touch-sensitive actuation surface (66) are arranged in spatially spaced relation to each other at the apparatus (10).

8. Apparatus in accordance with any one of the preceding claims, characterized in that the apparatus (10) comprises a handle (60) and in that the handle (60) and the fluid outlet (14) are arranged in a defined spatial relationship to one another.

9. Apparatus in accordance with claim 8, characterized in that a) the handle (60) and the fluid outlet (14) are connected together directly or indirectly, in particular immovably, and / or b) the at least one first actuation member (22) and the at least one second actuation member (24) are arranged or formed at the handle (60), and / or c) the handle (60) comprises a grip portion (62) for holding the handle (60) with one hand, and in that the at least one first actuation member (22) is arranged or formed at the grip portion (62).

10. Apparatus in accordance with any one of the preceding claims, characterized in that the apparatus (10) a) comprises a fluid reservoir (70) or in that the fluid inlet (12) is configured such that it is connectable to a fluid reservoir (70) or a fluid source (72), and / or b) comprises a heating device (78) for heating the fluid to be delivered, in particular wherein the heating device (78) is configured in the form of an evaporation device (80) for evaporating the fluid, and / or c) is configured in the form of a steam cleaning appliance (82), and / or d) comprises a pressure pump (84) for generating a fluid pressure in the fluid to be delivered, in particular wherein the pressure pump (84) is configured in the form of a high-pressure pump (86) for generating a fluid pressure of at least 50 bar, in particular at least 100 bar, and / or e) is configured in the form of a high-pressure cleaning appliance (88).

11. Apparatus in accordance with any one of the preceding claims, characterized by a control device (90) for controlling a volume flow of the fluid to be delivered and / or a physical quantity of the fluid, in particular a pressure and a temperature.

12. Apparatus in accordance with claim 11, characterized in that the control device (90) a) is configured for predetermining one or more discrete values of the volume flow of the fluid to be delivered or for steplessly predetermining the volume flow, and / or b) comprises the actuation device (20).

13. Apparatus in accordance with any one of the preceding claims, characterized by an indicator device (92) for indicating at least one operational state (A, B, C, D, E, F) of the apparatus (10), in particular wherein the indicator device (92) a) is configured for indicating an operational state (B, C) which is associated with the opening position of the valve device (18), and / or b) is configured in the form of a visual and / or audible indicator device (92) for visually and / or audibly indicating the at least one operational state (B, C) of the apparatus (10), and / or c) comprises at least one light element and / or at least one acoustic signal transducer, in particular a loudspeaker.

14. Method for delivering a fluid using an apparatus (10), in particular for delivering superheated steam, hot water, or a liquid under low pressure or under high pressure, which apparatus (10) comprises a fluid inlet (12) and a fluid outlet (14) operatively connected to the fluid inlet (12) for fluid communication therewith via a fluid connection (16), which fluid connection (16) is opened for delivering the fluid and which fluid connection is closed for preventing delivery of the fluid, which apparatus (10) further comprises an actuation device (20) for opening and closing the fluid connection (16), wherein the actuation device (20) comprises at least one first actuation member (22), wherein the actuation device (20) comprises at least one second actuation member (24), characterized in that the at least one first actuation member (22) and the at least one second actuation member (24) are arranged or formed at the apparatus (10) such that a one-handed operation thereof is possible such that a user can grasp the apparatus with one hand and simultaneously actuate, as needed, the at least one first actuation member (22) and the at least one second actuation member (24) simultaneously with the same hand, and in that for opening the fluid connection (16) the at least one second actuation member (24) is actuated with one hand while the at least one first actuation member (22) is actuated by the same hand.

15. Use of an apparatus (10) in accordance with any one of claims 1 to 13 for carrying out a method in accordance with claim 14.

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