EP3978141A1 - Pulvérisateur à pression à jet porté - Google Patents

Pulvérisateur à pression à jet porté Download PDF

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Publication number
EP3978141A1
EP3978141A1 EP21198194.9A EP21198194A EP3978141A1 EP 3978141 A1 EP3978141 A1 EP 3978141A1 EP 21198194 A EP21198194 A EP 21198194A EP 3978141 A1 EP3978141 A1 EP 3978141A1
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EP
European Patent Office
Prior art keywords
pressure
bar
pump
insert
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21198194.9A
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German (de)
English (en)
Inventor
Markus Kress
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Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3978141A1 publication Critical patent/EP3978141A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/004—Arrangements for controlling delivery; Arrangements for controlling the spray area comprising sensors for monitoring the delivery, e.g. by displaying the sensed value or generating an alarm
    • B05B12/006—Pressure or flow rate sensors
    • B05B12/008—Pressure or flow rate sensors integrated in or attached to a discharge apparatus, e.g. a spray gun
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
    • B05B9/0861—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0888—Carrying means for knapsack sprayers

Definitions

  • the invention relates to a pressure spray device with a pressure container, an electric pump and an electric storage device for supplying energy to the electric pump, with the electric pump building up a container pressure in the interior of the container.
  • a pressure spray device in particular a hand-held fire extinguisher or crop protection spray device, has become known, which comprises a spray agent container that can be acted upon by pressurized gas and a hose connected to the spray agent container with a one-sided valve for dispensing the spray agent.
  • the DE-U 84 20 572 shows a portable pressure spray device that is characterized in that the spray medium pressure container is provided with an upper filling opening that can be closed by a hand pump that can be used, as well as openings for a pressure indicator and for a pressure relief valve, as well as a connection opening for a spray hose.
  • a disadvantage of all the pressure sprayers mentioned above was that the pressure in the pressure sprayer, which was required to apply the spray and is preferably in the range from 1.5 to 1.6 bar, was built up in particular with the aid of a hand pump. When spraying, the pressure when the spray is applied is reduced. In the prior art, therefore, the pressure in the pressure vessel would have to be increased again by manual pumping after a certain period of time during which the spray agent was applied.
  • a pressure sprayer has become known in which an electric motor drives the pump.
  • the pump is located in the upper part of the pressure spray tank, and rechargeable battery cells are provided in the lower part of the housing, which protrudes into the liquid tank. Since the battery cells arranged there cannot be removed during operation, the work process must be interrupted when charging or replacing the batteries, either until the empty battery cells are recharged or replaced.
  • the pressure sprayer from the WO 2012/000578 A1 has become known, which has an insert for a pressure vessel with an electric pump, in particular a diaphragm pump, in which the electric pump is also supplied with batteries or accumulators, for example NiMh accumulators, which protrude into a pressure vessel under the pump and into the pressure vessel Recording housing analogous to U.S. 7,207,500 B2 are arranged.
  • a pressure spray device for applying a spray with a pressure container comprising a compressor connection and being able to be connected to a compressor.
  • gas is fed into the pressure vessel and in the container the pressure for spraying is built up.
  • the pressure in the pressure vessel can be set and, if necessary, kept constant via an external device.
  • a lithium-ion battery as the energy source for the electric pump.
  • a sprayer with a lithium-ion (Li-ion) accumulator has become known.
  • the lithium-ion (Li-ion) battery according to the U.S. 10,137,465 B2 is removable on the front of the sprayer water tank according to the U.S. 10,137,465 B2 arranged.
  • the sprayer according to the U.S. 10,137,465 B2 is connected to the water outlet of the pump.
  • the U.S. 5,931,207 A discloses a hand-held compressor used to spray liquids from a tank or to inflate inflatable objects.
  • the compressor is supplied with electricity by a storage device, in particular a battery, attached to the housing of the compressor.
  • a storage device in particular a battery
  • Not shown in the U.S. 5,931,207 A is how the storage device can be exchanged quickly and easily.
  • U.S. 5,931,207 A how the pressure has to be regulated in order to apply a constant volume flow.
  • U.S. 6,109,548 A shows a pressure sprayer with an electrically operated pump. Also from the U.S. 6,109,548 A it is not clear how the memory device can be exchanged quickly and easily.
  • the US 2016/0 243 570 A shows a sprayer with a system for regulating the application pressure with small deviations from 0.1 psi to 1.0 psi. That from the US 2016/0 243 570 A known system starts the compressor in case of deviations from the preselected pressure. As previously mentioned, the deviations are between 0.1 psi to 1.0 psi.
  • the compressor the US 2016/0 243 570 A1 has a maximum pressure level of 20 psi (1.37 bar), which is significantly lower than the pressure level of the device according to the invention, which preferably ranges from 1.5 bar to 3 bar.
  • a further disadvantage of the prior art was that the pressure in the container dropped when the liquid was dispensed.
  • the pressure reduction meant that the volume flow of the liquid to be sprayed changed.
  • Another disadvantage was that the pressure that could be preset was too low and the application rate could not be set precisely via the pressure. In addition, spray drift could only be avoided with pressures of less than 1.37 bar.
  • the accumulator is arranged outside the interior of the container on the side of the outer wall of the container or on the side of the carrying handle of an insert for the pressure sprayer, the insert including the electric pump.
  • the pressure spray device according to the invention is characterized in that a pressure in the range from 1 to 3 bar, in particular more than 1.37 bar to 3 bar, preferably 1.5 bar to 2.5 bar, preferably in 0.1 bar increments, can be set. Furthermore, the pressure spray device has a sensor and a control which switches the electric pump on and off depending on the container pressure, which is determined by means of a pressure sensor, so that the pressure set on the display is maintained.
  • the adjustability of the pressure in the range of 1 to 3 bar allows the pressure sprayer according to the invention to be used in four main areas of application.
  • plants in the garden are preferably sprayed from the underside of the leaves.
  • the pressures are preferably in the range from 2 to 2.5 bar and the volume flow is between 500 and 1500 ml/min.
  • the droplets, in combination with a 1 mm hollow cone nozzle are fine enough to wet the underside of the leaves. Pressures that are too low, as in the prior art, result in larger droplets that cannot be sprayed far enough or drip off the underside of the leaf if the distance between the plant leaf and the nozzle is too small.
  • Another area of application is the spraying of herbicides.
  • herbicides for eliminating harmful plants, it is undesirable for the droplets to drift off due to the wind, since they can then contaminate crop plants.
  • low-drift spraying can be carried out at a pressure of around 1.5 bar, particularly in the range of 1.37 bar to 1.6 bar.
  • Generating foam through a suitable nozzle design requires a pressure of over 2 bar, preferably 2.5 bar.
  • a pump flow rate of at least 4.0 l/min at 2 bar is sufficient.
  • the foam can be sprayed continuously with the pressure spray device according to the invention, with the pump conveying a sufficient volume flow without the pressure in the container dropping below 2 bar during continuous operation.
  • Regarding the foaming is on the EP 2 308 603 A1 referenced, the disclosure of which is incorporated in its entirety in the present application.
  • the pump is housed in a housing which is part of the insert.
  • a fastening device which enables the storage device, in particular the accumulator, to snap into place, is provided on the container or on the housing, which is part of the insert.
  • the accumulator is arranged on the outside of the container or on the wall of the housing which accommodates the pump.
  • the accumulator can Sliding rails are pushed in until the storage device or the accumulator engages and the power supply is made via electrical contacts from the inserted storage device or accumulator to the pump.
  • lithium-ion batteries are used in the spray device according to the invention as a storage device, which can also be used for other applications in households or power tools.
  • the accumulators or storage device In order to protect the electrical connection between the storage device or accumulator and the housing against the ingress of water, it is advantageously provided for the accumulators or storage device to be surrounded by a protective cover which also has a sealing effect against the housing of the pump.
  • pressure sensors are provided in the pressure sprayer according to the invention, which detect the pressure loss when the spray liquid flows out in the container and forward it to a pressure regulator.
  • the pressure sensors are preferably provided in the housing of the insert that accommodates the electric pump.
  • the pressure control switches on the electric pump. Compressed air is then fed into the container of the pressure sprayer by the pump until an upper limit value is reached.
  • the pressure control then switches the pump off again.
  • the tolerance for switching off the pump is preferably in the range of 2 to 20%, preferably 10%, in particular 5%. This means that, for example, at a specified target pressure of 2 bar, if the pressure falls below 1.6 bar with a tolerance of 20%, the pump starts again.
  • a very particularly preferred tolerance range for preventing a pump from pulsing is a tolerance of 10%, ie at a setpoint pressure of 2 bar, the pump would be put back into operation if the pressure fell below 1.8 bar.
  • the tolerance is also referred to as hysteresis, by which a lower limit value can be undershot before the pump is put into operation.
  • the setpoint pressure is an upper limit value, for example of 2.0 bar
  • the lower limit value determined with a hysteresis or tolerance of 10% is a pressure of 1.8 bar.
  • the pressure which is preferably kept constant with a tolerance in a predetermined pressure range, means that a constant volume flow is guaranteed. In this way it can be ensured that not an unnecessarily large amount of spray liquid, in particular plant protection products, gets into the environment.
  • the pressure also determines the droplet size of the spray mist. If the pressure is too high, the droplets are smaller and can therefore contaminate plants that should not be sprayed at all by drifting in the wind. Drops that are too large, which occur at low pressure, prevent sufficient wetting of the plant leaves. In the case of insecticides, it is advantageous if the pressure is adjusted so that small droplets are present. In such a case, a fine mist is formed that ensures complete wetting of the leaves.
  • the pressure for applying insecticides is preferably between 2 and 2.5 bar.
  • the pressure is preferably in the range from 1 to 2 bar, preferably around 1.5 bar, in particular not more than 1.5 bar.
  • a constant pressure is required for use in foam generation in cleaning, for example of motor vehicles, so that the set foam quality remains the same during the foaming process.
  • the pressure is in the range from 2 to 2.5 bar, but at least 2 bar, since foam formation below 2 bar does not take place.
  • a pressure sprayer for applying foam with a hand pump describes the EP 2 308 603 A1 , the disclosure content of which is incorporated in full in the present application.
  • the EP 2 308 603 A1 describes the parameters that are decisive for good foaming.
  • the pump is preferably designed in such a way that a sufficient volume flow in a pressure range between 1 and 3 bar, particularly preferably between 1.5 and 2.5 bar, is made available for different spray applications and requirements.
  • the pressure is set on a control panel, preferably a display device, in particular a display, in the range from 1.5 to 2.5 bar.
  • the pump is switched on again if there are deviations in the range of 2 to 20%, preferably 10%, from the desired pressure, for example if the pressure falls below an internal limit value. With such a tolerance, there is sufficient time between switching the pump on and off so that wear is minimized.
  • a pendulum piston pump is used as the electric pump.
  • the piston is sealed to the cylinder with the help of a rubber membrane.
  • the pendulum piston pump combines the advantages of the diaphragm pump with those of the piston pump.
  • the pendulum piston pump runs more quietly than a piston pump and does not have to be lubricated. It is particularly preferred if the air sucked in from the housing is compressed by the piston of the pump and fed into a pressure hose via an outlet valve. The pressure hose in turn ends in the container of the pressure sprayer.
  • the pressure in the pressure spray device can preferably be set in the range from 1 to 3 bar with the aid of the electric pump and the control or control unit.
  • the pressure sensor is preferably arranged on the back of a circuit board of the control panel. The pressure sensor located there is connected to the container via a hose. In this way, the pressure in the container can then be determined.
  • the pressure hose is preferably made of silicone, polyurethane or PVC.
  • the hose itself is preferably connected to a pressure nipple on the housing, so that compressed air can be fed into the tank or pressure vessel via this nipple.
  • an inlet valve is preferably provided between the pump housing and hose, which only opens when compressed air flows in the direction of the nipple and thus into the container. In this way it is possible to maintain the internal pressure in the container even when the pump is switched off.
  • the pressure sensor is preferably connected to the pressure nipple via the pressure hose or another hose.
  • the pump can be operated in reverse mode. With high tank pressures and an unfavorable piston position, the motor can stall when it starts up. If the pump is equipped with a reverse mode, the reverse mode causes the motor to reverse briefly and restart immediately. For this purpose, the motor current is measured and the reverse current is activated when a specific motor current value is exceeded. This ensures that the motor starts up quickly and without problems, even if the motor is in an unfavorable position.
  • FIG. 1 shows a pressure sprayer or a pressure spraying device 1 according to the prior art in a first embodiment with a hand pump in section.
  • the pressure sprayer 1 shown comprises a pressure vessel 3 and a hand pump 5.
  • the hand pump 5 is connected to the pressure vessel 3 via a screw connection 7.
  • the hand pump 5 can be detached from the pressure vessel 3 in order to fill the inside of the pressure vessel 3 with liquid spray.
  • the spray liquid can be filled up to a maximum level of 11.
  • the volume V spray of the spray at the maximum level is 5 l and the volume V gas of the gas cushion is 2 l.
  • the total volume of the device would then be 7 l.
  • the ratio of the volume V gas of the gas cushion to the volume V spray of the spray, after a pressure has been built up in the pressure spray device determines the application time of the spray.
  • the pressure in the pressure sprayer is built up by means of the hand pump 5 .
  • the 1 illustrated hand pump by an electric pump, which is preferably used in an application, as in the Figures 2 to 4 shown, housed, exchanged.
  • the pressure build-up then takes place instead of manual pumping by means of the in Figures 2 to 4 illustrated, integrated in the use of the invention, electric pump. It can also be used with an electric pump with the pressure tank via a screw connection like the hand pump figure 1 get connected
  • a constant pressure in the container can be set, preferably in the range of 1 to 3 bar, by constantly monitoring the pressure in the container and by controlling the electric pump on and off depending on the container pressure, which is determined by the pressure sensor can do what is not possible with a hand pump. With the hand pump, a set pressure drops continuously.
  • FIG 2 shows the housing 100 of the insert with the electric pump, which is used instead of the hand pump, as in 1 shown can be used in the pressure vessel.
  • the housing 100 of the insert includes a carrying handle 102 and a thread, in particular a screw-threaded socket 104 for screwing the insert into the container of the pressure sprayer.
  • the carrying handle 102 is designed in such a way that it is able to take the weight of the filled container.
  • the screw-threaded socket 104 is interchangeable. This means that the pump can also be adapted for other sprayers with different threads and connected to a wide variety of containers. All necessary settings for the pressure sprayer can be made on the display device or the display 106 of the housing in which the pumps are housed.
  • the housing of the insert is constructed asymmetrically.
  • Electrical contacts 110 are provided on the side of the wall 108, which can be connected to the storage device or the accumulator in a simple manner by sliding the storage device onto slide rails 112, which are attached to the side of the housing. The electrical contacts 110 then snap into corresponding openings in the electrical storage device, so that an electrical connection is established between the accumulator and the housing and the electrical supply of the pump arranged in the housing is ensured.
  • the fact that the storage device can be easily removed from the side wall via the slide rails 112 and reattached to it means that the storage device can be changed quickly and easily without having to open the container to change the accumulator.
  • FIG 3a shows a sectional view of the housing 110 of the insert with the circuit board 210 of the control unit covered.
  • the unit or housing 110 includes the electric pump.
  • the so-called motor pump unit 200 with the electric pump is arranged in the housing 110 at an angle.
  • the pump used in the motor pump unit is preferably an oscillating piston pump 202.
  • the piston 210 of the oscillating piston pump is connected to the cylinder head via an elastomer sleeve 207.
  • the cylinder consists of a cylinder cover 204 with an intake valve and an outlet valve 206
  • the compression process carried out by the piston 210 of the pump generates heat, which is preferably dissipated via the cylinder head.
  • both the cylinder head and the cylinder cover 204 are made of a metallic material, preferably an aluminum injection molding.
  • the basic cylinder housing 208 consists of a plastic material since no heat dissipation is required.
  • the air sucked out of the housing of the cartridge is compressed by the piston 210 of the pump and directed via the outlet valve 206 into a pressure hose 220 which leads into the canister of the pressure sprayer which is connected to the cartridge.
  • the pressure hose is made of silicone, PU or PVC.
  • the pressure hose 220 itself is connected to the container by means of a pressure nipple 222.
  • the compressed air is fed via the pressure hose 220 and the pressure nipple 222 into the pressure tank of the pump spray device.
  • the inlet valve of the pump only opens when compressed air flows towards the nipple. This enables the pressure in the connected container of the pressure sprayer to be maintained even when the pump is switched off.
  • another hose 230 is also provided, which connects a pressure sensor 221 to another nipple 232, which leads into the container (not shown).
  • the additional hose 230 can also be identical to the pressure hose 220 . This arrangement ensures that the pressure in the container is measured by the pressure sensor 221 .
  • the circuit board also includes all of the control electronics for evaluating the pressure measurement and corresponding control of the electric pump for maintaining a constant pressure in the container (not shown), preferably in the range of 1 bar to 3 bar.
  • the circuit board also includes the electronics for the display device, which can be used, for example, to set a predetermined pressure.
  • the pressure sensor 221 sits on the board 201, preferably on the back of the control panel with the display (not shown).
  • the pressure sensor is connected to the housing at the tank opening via hose 230 and allows the pressure in the tank to be determined. As previously described, as the spray liquid flows out, the air pressure in the container drops. This pressure loss is detected by the pressure sensor 221 and processed by the pressure control as part of the control electronics, which is also arranged on the circuit board 201 in the housing of the insert. As soon as the pressure loss has reached a lower limit, the pressure control switches on the pump and compressed air is pumped through the pump into the container until an upper limit pressure is reached. The controller then switches the pump off again when the actual tank pressure measured by the pressure sensor is above the upper limit value.
  • a working pressure below the set target pressure is established in the container.
  • the pump runs, the pump being designed in such a way that a sufficient volume flow in a pressure range of 1 to 3 bar, here in particular 1.5 to 2.5 bar, is made available for various spray applications and requirements.
  • a pressure of 1.5 to 2.5 bar is typical for crop protection applications. If the insecticides are to be wetted as evenly as possible, the pressure is adjusted so that small droplets are present. The pressure is then in the range of 2.0 to 2.5 bar.
  • the tolerance for switching the pump on and off for a given desired value is preferably in the range of 2 to 20%, preferably 10%.
  • the preferred pressure when applying herbicides is in the range of 1.0 to 2.0 bar, preferably about 1.5 bar.
  • a higher pressure of more than 2 bar up to 3 bar and a corresponding volume flow is required for foam generation.
  • a satisfactory foam quality is achieved in the range from 2 to 2.5 bar, but at least 2 bar.
  • a particular advantage of the present invention is the ability to set a desired container pressure via the display on the housing and the control with the aid of the control device.
  • the The pump is designed in such a way that a pressure in the range between 1 and 3 bar can preferably be set, with an adjustability between 1.5 bar and 2.5 bar being particularly preferred. In this way, a sufficient volume flow of the pressure sprayer is guaranteed.
  • the control it is possible to keep the pressure in the container constant and thus deliver a constant volume flow of, for example, 5 l/min at a constant pressure of 2.5 bar.
  • the pressure to be kept constant can preferably be set in stages, for example at 1.6 bar, 1.8 bar, 2.0 bar.
  • the control is now such that, for example, a pressure of 2.0 bar is set. If the pressure value drops by 10% to 1.8 bar, for example, when the spray is applied, then when the pressure sensor 221 on the circuit board 201 detects a pressure of 1.9 bar, the pump in the form of a pendulum piston pump 202 is activated and the pressure in the Container increased to the set pressure of 2.0 bar. This ensures that the volume flow to be applied is always in the range of 6 l/min.
  • figure 4 1 is a plan view of the housing of the insert with the memory device attached.
  • the display 106 and the insert control panel which shows the inserted tank pressure in bar or PSI.
  • the display is switched off using the button 400.
  • the button 402 allows the pressure to be preset, preferably in 0.1 bar increments via the buttons 404, 406.
  • the device preferably shows the battery charge status for a time when it is switched on from 0.5 to 10 seconds, in particular 3 to 6 seconds.
  • a reverse mode is implemented in the motor.
  • the motor is prevented from blocking if the piston position is unfavorable by operating it in reverse mode, ie the motor runs backwards for a short time and then restarts.
  • the motor is activated into reverse mode when the motor current exceeds a certain value.
  • the storage device 500 arranged on the side of the housing, in particular the accumulator, preferably the Li-ion accumulator, is very popular figure 4 to see.
  • the storage device, in particular the accumulator 500 snaps into the provided holder with slide rails in a form-fitting manner and can be removed again for recharging by simply pressing a button on the storage device.
  • the accumulator can be exchanged very easily due to the ease of use via the slide rails on the housing, which allow the accumulator or the storage device to be slid on until the contacts are connected to the storage device.
  • the storage devices used have a nominal voltage of 18V.
  • Accumulators with different capacities between 1.5 and 8 Ah can be used. With a capacity of 2.5 Ah, the theoretical usage capacity for one battery charge is approx. 60-80 liters of liquid that can be sprayed.
  • the advantage of these accumulators is that they can also be used for other compatible electronic devices.
  • the accumulator is provided with an additional protective cover in order to protect the electrical connection of the accumulator to the housing against the ingress of moisture.
  • FIG 5 a pressure sprayer with the insert 1000 according to the invention is shown.
  • the container 1100 in the insert 1000 according to the invention with the electric pump according to the invention can be clearly seen.
  • the container 1100 of the pressure sprayer is provided with a carrying strap 1102 . Also clearly visible is the pressure lance 1104 attached to the container of the pressure sprayer, with which the liquid in the container can be discharged. Furthermore, the use with the pump also includes a carrying handle 1010. If there is no carrying strap 1002, this can be done Pressure sprayer can be carried alone with the carrying handle 1010. The carrying handle is designed in such a way that the carrying handle is also able to take the weight of the filled container.
  • a pressure sprayer with an electric pump is specified for the first time, in which the electrical supply device can be exchanged in a simple manner without, for example, pressure having to be released from the container.
  • the use of the pressure sprayer according to the invention is characterized in that a container pressure can be set and maintained with the aid of the control even when liquid is being discharged from the container of the pressure sprayer.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Nozzles (AREA)
EP21198194.9A 2020-10-01 2021-09-22 Pulvérisateur à pression à jet porté Pending EP3978141A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020125632.9A DE102020125632A1 (de) 2020-10-01 2020-10-01 Drucksprühgerät

Publications (1)

Publication Number Publication Date
EP3978141A1 true EP3978141A1 (fr) 2022-04-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21198194.9A Pending EP3978141A1 (fr) 2020-10-01 2021-09-22 Pulvérisateur à pression à jet porté

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EP (1) EP3978141A1 (fr)
DE (1) DE102020125632A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022229484A1 (fr) * 2021-04-29 2022-11-03 Goizper, S.Coop. Pulvérisateur sous pression
IT202200026259A1 (it) * 2022-12-21 2023-03-21 Vitaliano Donato Kit passeggiata con idropulitrice post deiezione animali

Citations (17)

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US20170106385A1 (en) * 2015-10-20 2017-04-20 Forefront Product Design, Llc Portable pressurized sprayer

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WO2022229484A1 (fr) * 2021-04-29 2022-11-03 Goizper, S.Coop. Pulvérisateur sous pression
IT202200026259A1 (it) * 2022-12-21 2023-03-21 Vitaliano Donato Kit passeggiata con idropulitrice post deiezione animali

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