Mobile apparatus comprising a system to be worn on the back, and comprising a hand-held device

Abstract

The invention relates to a mobile apparatus (10) comprising a system (12) to be worn on the back and comprising a hand-held device (14), wherein: the system to be worn on the back comprises a fluid reservoir (20) and an electrically driven high-pressure pump for pressurizing the fluid with high pressure of at least 30 bar; the fluid pressurized with high pressure is conducted to the hand-held device via a high-pressure line; and the hand-held device comprises a nozzle for the single-fluid atomization of the fluid pressurized with high pressure.

Description

[0001] Applicant:

[0002] SOLO Kleinmotoren GmbH Industriestraße 9 71069 Sindelfingen

[0003] 38020229WO 27.11.2025

[0004] TLG / MAY

[0005] Title: Mobile device with a back carrying system and a handheld device

[0006] Description

[0007] The invention relates to a mobile device with a backpack carrying system and a handheld device, wherein the backpack carrying system comprises a fluid reservoir and an electrically driven high-pressure pump for pressurizing the fluid to a high pressure of at least 30 bar, wherein the high-pressure fluid is conveyed to the handheld device via a high-pressure line, and wherein the handheld device comprises a nozzle for atomizing the high-pressure fluid.

[0008] The mobile device according to the invention provides a highly efficient arrangement that enables very fine atomization of a fluid. This advantage is achieved in particular by the high-pressure pump pressurizing the fluid to be atomized at a pressure of at least 30 bar. Pressurizing the fluid at a pressure of at least 50 bar, and in particular at least 70 bar, is especially preferred. Preferred maximum pressures are 130 bar, and in particular 150 bar.

[0009] Because the fluid reservoir and the high-pressure pump are located in the backpack system, comparatively heavy components of the device can be positioned close to the body and carried by a single operator. The high-pressure fluid is conveyed from the high-pressure pump to the handheld device via a high-pressure line, making the device relatively small and lightweight. Since the handheld device includes a nozzle for atomizing the high-pressure fluid, additional atomizing media are unnecessary (such additional media serve as energy sources in two-component atomization).

[0010] In particular, the atomized fluid consists of droplets with a mean volumetric diameter of at most 40 pm, and especially at most 30 pm. The "mean volumetric diameter" means that a first half of the dispensed liquid quantity consists of droplets larger than a specified value, and that a second half of the dispensed liquid quantity consists of droplets smaller than a specified value.

[0011] In particular, the mobile device is designed to dispense fluid volumes of up to 2.5 ml per second. These fluid volumes are especially suitable for an insecticide for vector or pest control. Furthermore, it is proposed that the handheld device include a blower to generate an airflow, which serves to transport the atomized fluid and / or to further atomize it. In this way, the atomized fluid can be transported in the direction of the airflow and / or atomized into even smaller droplets.

[0012] Particularly preferably, the handheld device is supplied with electrical energy from a power source via an electrical cable, preferably wherein the power source is arranged on or in the backpack system. This enables the provision of a particularly lightweight and ergonomic handheld device.

[0013] The energy source is preferably an interchangeable electrical energy storage device, in particular a replaceable battery.

[0014] According to a preferred embodiment, the replaceable electrical energy storage device also supplies the high-pressure pump with electrical energy.

[0015] The replaceable electrical energy storage device is arranged, in particular, in a compartment which is provided with an openable and closable cover to protect the energy storage device. Such a compartment preferably has a volume that allows for the accommodation of two replaceable batteries, wherein a first replaceable battery serves to operate the device and wherein a second replaceable battery is carried as an energy reserve. The device according to the invention preferably enables autonomous operation even after the fluid reservoir has been emptied.

[0016] Furthermore, it is preferred that the aforementioned electrical line and the high-pressure line are part of a line bundle, which is preferably enclosed by a common outer sheath. In this way, a mechanical connection between the backpack system and the handheld device exists only along a single strand, which bundles together several lines with different functions (fluid line and electrical power line). From the operator's perspective, this significantly simplifies the handling of the handheld device compared to an arrangement with several independent strands.

[0017] It is further proposed that the handheld device have an input unit for specifying a value for the pressure to be applied to the fluid, with the input unit communicating with a high-pressure control unit of the high-pressure pump via a data line. Thus, the high-pressure value is specified on the handheld device, which is much simpler and more convenient for the operator than specifying the high-pressure value on the backpack system, which is also possible in principle.

[0018] It is particularly preferred that the data line is also part of the aforementioned cable bundle, so that a mechanical connection between the backpack system and the handheld device exists only along a single strand, wherein the single strand combines several lines with different functions (fluid line, electrical energy line, data line) as a bundle.

[0019] The high-pressure control system preferably includes a voltage regulator and an electric motor to drive the high-pressure pump. This allows for very simple and very fast control of the high-pressure pump.

[0020] It is possible that the high-pressure control system—for the purpose of high-pressure regulation—is coupled with a pressure sensor to measure the fluid pressure. In principle, the pressure sensor can be located "anywhere" along the path where the fluid is pressurized, for example, in the backpack system. However, for particularly accurate and distortion-free measurement, it is preferable for the pressure sensor to be located in the handheld device and upstream of the nozzle.

[0021] Mobile device according to one of the preceding claims, characterized in that the handheld device comprises a targeting beam device which serves to generate an optical targeting beam which is preferably aligned parallel to a fluid discharge axis of the nozzle. This contributes to ergonomic operation of the handheld device, since the targeting beam indicates the direction of the fluid discharge to the operator.

[0022] It is further preferred that the handheld device includes a hand switch for triggering fluid dispensing from the nozzle. It is possible that fluid dispensing only occurs when the hand switch is actuated, so that if the hand switch is not actuated, no fluid is dispensed. Another ergonomically advantageous actuation option is that a double actuation of the hand switch corresponds to a continuous, uninterrupted fluid dispensing. Double actuation is understood to mean two actuations of the hand switch within a short time period (e.g., within 1 or 2 seconds). The continuous fluid dispensing can be stopped by actuating the hand switch again.

[0023] The mobile device may have additional features that contribute to ergonomic handling and efficient operation. For example, the backpack system may have an additional compartment for work accessories, such as gloves or provisions.

[0024] A further improvement in the ergonomics of the device is achieved if the device has a fluid filter upstream of the high-pressure pump and if a monitoring device is provided to monitor any pressure drop occurring across the fluid filter. If the pressure drop becomes too great, the high-pressure pump can be switched off; preferably, a high but still acceptable pressure drop is indicated by a display device, so that an operator can initiate the replacement or cleaning of the fluid filter while still being able to use the device for a certain period of time. Ideally, the display device is arranged on the handheld unit. Further features and advantages of the invention are the subject of the following description of a preferred embodiment.

[0025] The drawing shows:

[0026] Fig. 1 shows a perspective view of a design form of a mobile device;

[0027] Fig. 2 shows a view corresponding to Fig. 1 from an opposite perspective;

[0028] Fig. 3 shows a vertical section of a back support system of the mobile device;

[0029] Fig. 4 shows a view of the back support system corresponding to Fig. 1, with a cover part removed to allow a view of components arranged inside the back support system;

[0030] Fig. 5 shows a vertical section of a handheld device of the mobile apparatus; and

[0031] Fig. 6 shows a top view of the handheld device.

[0032] One embodiment of a mobile device is designated in the drawing by reference numeral 10. The device 10 comprises a backpack carrying system 12, also shown in Figures 3 and 4, and a handheld device 14, also shown in Figures 5 and 6. The backpack carrying system 12 has a frame 16 with a back support 18. The frame 16 can be fixed to the back of an operator by means of carrying straps, which are known per se but not shown in the drawing.

[0033] The backpack system 12 includes a fluid reservoir 20 with a volume of, for example, 3 to 10 liters. The fluid is, in particular, an insecticide for vector or pest control. The fluid can be supplied to the fluid reservoir 20 via a detachable closure nozzle 22.

[0034] The fluid reservoir 20 has a lower section 24 in the operating position of the backpack system 12, which communicates with a fluid filter 28 via a suction line 26 (see Figure 3). An outlet side of the fluid filter 28 communicates with an optional vacuum switch 30 and with a supply line 32, which supplies a high-pressure pump 34 (see Figure 4) with fluid.

[0035] The high-pressure pump 34 is driven – for example via a drive belt – by an electric motor 36. The motor 36 draws energy from a power source 38, in particular in the form of a replaceable battery, which is arranged on or in the backpack system 12.

[0036] For example, the energy source 38 is arranged in a compartment 40 of the back carrying system 12, see Figure 2.

[0037] Preferably, compartment 40 is provided with an openable and closable cover 42. The motor 36 is coupled to a voltage regulator 44 (see Figure 4), with higher voltages corresponding to a higher speed of the motor 36 and thus also to a higher speed of the high-pressure pump 34.

[0038] The high-pressure pump 34 pressurizes the fluid with a maximum pressure of 150 bar. If this pressure is exceeded, a return valve (known per se and not shown in the drawing) opens and returns fluid from the pump 34 via a return line 46 back to the lower section 24 of the fluid storage tank 20.

[0039] The high-pressure pump 34 has a high-pressure outlet 48 for high-pressure fluid, see Figure 4. The high-pressure outlet 48 is connected via an intermediate line (not shown in the drawing) to an inlet 50 (see Figure 1) of a high-pressure hose 52 (see Figure 5). The high-pressure hose 52 opens at an outlet 54 in the area of ​​an inlet of the handheld device 14.

[0040] The high-pressure line 52 is part of a bundle of lines designated as reference numeral 56 in Figure 1, which is surrounded by an outer sheath 58, see also Figure 5.

[0041] Further components of the cable bundle 56 are an electrical cable 60 and a data cable 62. The electrical cable 60 is supplied by the power source 38 and serves to supply power to a blower assembly located in the handheld device 14. This assembly includes a drive motor 64 for driving a blower 66, which serves to optionally generate an airflow 68. The data cable 62 communicates at one end with the voltage regulator 44 as part of the high-pressure control of the high-pressure pump 34, which also controls the electric motor 36.

[0042] To specify a desired value for the high pressure of the fluid, the handheld device 14 has an input unit 68, which is assigned to a circuit board 70, see Figures 5 and 6. The data line 62 is connected to the circuit board 70.

[0043] The circuit board 70 also communicates with a hand switch 72, which is preferably arranged in the area of ​​a handle 73 of the handheld device 14. The hand switch 72 is, for example, a magnetic switch. The hand switch 72 serves to switch on the high-pressure pump 34 and thus to trigger fluid discharge from the nozzle 84.

[0044] Furthermore, the circuit board 70 communicates with a pressure sensor 74, which measures the pressure of the high-pressure fluid in a pipeline 76 that is fluid-connected to the high-pressure line 52. The pipeline 76 is fed by the high-pressure line 52 and terminates at a nozzle assembly 78.

[0045] The nozzle assembly 78 comprises an optional pre-filter 80, an optional check valve 82, and the actual nozzle 84 in the form of a flow channel constriction. A fluid discharge axis 86 is associated with the nozzle 84, which preferably runs parallel to the airflow 68. Optionally, the handheld device 14 includes a targeting beam device 88 for generating an optical targeting beam 90, which is aligned parallel to the fluid discharge axis 86 of the nozzle 84. The handheld device 14 also has a device 92 for specifying whether the fluid discharge is assisted by the blower 66. Optionally, a status indicator 94 for the status of the fluid filter 28 is provided. Furthermore, an indicator 96 for displaying the charge level of the power source 38 is optionally provided.

Claims

Patent claims 1. Mobile device (10) with a backpack carrying system (12) and with a handheld device (14) , wherein the backpack carrying system (12) comprises a fluid reservoir (20) and an electrically driven high-pressure pump (34) for pressurizing the fluid with a high pressure of at least 30 bar, wherein the pressurized fluid is conveyed to the handheld device (14) via a high-pressure line (52), wherein the handheld device (14) comprises a nozzle (84) for atomizing the pressurized fluid.

2. Mobile device (10) according to claim 1, characterized in that the atomized fluid consists of droplets with a mean volumetric diameter of at most 40 pm, in particular of at most 30 pm.

3. Mobile device (10) according to one of the preceding claims, characterized in that the mobile device (10) is designed to dispense fluid quantities of a maximum of 2.5 ml per second.

4. Mobile device (10) according to one of the preceding claims, characterized in that the fluid is an insecticide for vector or pest control.

5. Mobile device (10) according to one of the preceding claims, characterized in that the handheld device (14) a blower (66) for generating an airflow (68) for transporting the atomized fluid and / or serves for additional atomization of the atomized fluid.

6. Mobile device (10) according to one of the preceding claims, characterized in that the handheld device (14) is supplied with electrical energy from an energy source (38) by means of an electrical line (66), preferably wherein the energy source (38) is arranged on or in the back carrying system (12).

7. Mobile device (10) according to claim 6, characterized in that the energy source (38) is an interchangeable electrical energy storage device.

8. Mobile device (10) according to claim 7, characterized in that the replaceable electrical energy storage device (38) also supplies the high-pressure pump (34) with electrical energy.

9. Mobile device (10) according to one of claims 6 to 8, characterized in that the electrical line (60) and the high-pressure line (52) are part of a line bundle (56) which is preferably surrounded by a common outer shell (58).

10. Mobile device (10) according to one of the preceding claims, characterized in that the handheld device (14) has an input unit (68) for specifying a value at which high pressure the fluid is to be subjected, wherein the input unit (68) communicates with a high pressure control of the high pressure pump (34) via a data line (62).

11. Mobile device (10) according to claim 10 with reference to claim 9, characterized in that the Data line (62) is part of the cable bundle (56).

12. Mobile device (10) according to claim 10 or 11, characterized in that the high pressure control comprises: a voltage regulator (44) and an electric motor (36) for driving the high pressure pump.

13. Mobile device (10) according to one of claims 10 to 12, characterized in that the high-pressure control is coupled with a pressure sensor (74) for detecting the fluid pressure.

14. Mobile device (10) according to one of the preceding claims, characterized in that the handheld device (14) comprises a target beam device (88) which serves to generate an optical target beam (90) which is preferably aligned parallel to a fluid discharge axis (86) of the nozzle (84).

15. Mobile device (10) according to one of the preceding claims, characterized in that the handheld device (14) comprises a hand switch (72) for triggering a fluid discharge from the nozzle (84), preferably wherein a double actuation of the hand switch (72) corresponds to an actuation-free, continuous fluid discharge.

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