DE2014934A1 - Thermal spray, mist or atomizer device - Google Patents

Description

DIPL.-ΙΝΘ. H. STEHMANN H nürnkrg 2

n «ENW« NBTRA8M 4 · <

DIPJU-PHYS. DR. K. SCHWEINZER 2014934 ^TEL: κανζιε! 0911/203 / "pr.vat: t7" o "

_.__ "_.-," ._, __ TElEGItAMM-ADkESSE: STANDING PATENT

fatbntanWaltb _teUX

BANK ACCOUNTS:

DEUTSCHEBANKAG-NOKNIEKGNrMIIM POST CHECK ACCOUNT: NORNIEKO «7M1

Nuremberg, May 25-70 115-50

McGraw-Edison Company, $ 333 West River Road, Elgin

Illinois / USA

Thermal spray, mist or atomizer device.

The invention relates to a thermal spray, mist or atomizer device consisting of an internal combustion engine with a control unit for the output power and an exhaust pipe for the exhaust gases, a mixing pipe, an outlet duct between the exhaust pipe of the internal combustion engine and the inlet of the mixing pipe, a tank for a sprayable or nebulizable liquid substance, a control device · in a connecting channel between the tank and the mixing tube to 'control the delivery of the liquid substance, which the exhaust gases of the internal combustion engine mixed in and together with this from the mixing tube as sprayed, atomized or atomized mixture ejected will.

Liquid pesticides are evaporated, Nebulize or atomize by means of heat in the vaporous or gaseous form Phase transferred and sprayed or atomized with a so-called spray, mist or atomizer in

ο Form of small particles, the diameter of which is approximately 0.5 to

co is 50 microns. A blower is generally used ^ to this vaporized or in the gas phase, transferred Par - "**" · to spray or atomize particles into the surrounding atmosphere. to A disadvantage of the known devices has been the unwieldy ^ before shape and great weight proved, which makes them quite

are immobile. Furthermore, the normal operation ■ of spraying, misting or atomizing devices requires changes of direction

-2-

The fee schedule of the German Chamber of Patent Attorneys applies for this »AuilragiverhMltnit. Jurisdiction for performance and payment: Nuremberg, Conversations on the telephone have no legally binding WirSOngr —— v-_

20U934

of the sprayed or atomized substance from the horizontal both upwards and downwards. With such changes of direction, the composition usually gives way to the nebulized one Substance, especially in the case of portable devices, depends on the desired composition. As a result, the can actually be atomized or sprayed substance be drier or wetter than desired; the particle size can be outside of what is desired Area; the particles can also be formed back during spraying or can also be dammed up in this way that they precipitate in the form of drops of liquid.

: The invention is based on the object of these disadvantages avoid and create a portable thermal spray, mist or atomizer that controls the amount and composition of the generated fog remains independent of the spatial position. The invention is therefore based on the object to create a portable thermal spray, mist or atomizer of lightweight construction, which is from the exhaust of a Internal combustion engine is fed, the under different inclinations and that in the upward, downward or horizontal Direction of the sprayed or atomized substance is sprayed without a significant change in the amount emitted or the composition of the atomized or sprayed substance occurs.

f This object is achieved according to the invention in that a linkage is arranged between a control device for the output power of the internal combustion engine and a control device for the amount of liquid substance, and that the linkage opens a control device for the liquid substance as the power of the internal combustion engine increases Fan is provided with a drive device between it and a shaft of the internal combustion engine, and that an arrangement of baffles for the fan is also provided in order to load the internal combustion engine without external work.

009841/1317

20U93A

In a further embodiment of the invention, the control device for the throughput of the liquid substance has an interior with an inlet valve controlled by a float , which maintains the level of the liquid substance in the interior at a predetermined height, with a control valve between the interior and the line is arranged for the liquid substance . _. . -._. ■ .. '■■■' ■ '·

In yet another embodiment of the invention, a Venturi nozzle is arranged in the outlet channel, namely in the direction of the flow between the inlet of the mixing tube and the entry point for the liquid substance in the mixing tube. According to the invention, the interior and the Venturi nozzle are arranged side by side in such a way that an inclination of the mixing tube without any noticeable change in the height difference between the interior and the Venturi nozzle can be followed. Venturi nozzle cavity and arranged in an advantageous "', about the same level.

In a still further advantageous embodiment of the invention, an adjustable needle valve is arranged between the tank and the line for the liquid substance, through its adjustment the supply of liquid substance into the line to change the predetermined composition of the nebulized mixture. will change.

According to the invention, the hot exhaust gases of a portable internal combustion engine are collected in an evaporator to evaporate a liquid atomized or nebulized substance or compound and then mixed with the exhaust gases of the internal combustion engine under constant throughput at an adapted ratio to achieve a certain composition of the sprayed or nebulized To obtain a mixture. ^f Through the invention, a thermal spray, mist or atomizer is created, which by means of atomizing a liquid nebulizable substance and that self-regulating'Ιπ-Φβγ- ■ ratio to the amount of exhaust gases emitted from the combustion engine, and has other means to the amount of the sprayed or nebulized substance to a given power of the

009 * 41/1317 _;, _

- 20U93A

Adjust internal combustion engine.

According to a further embodiment of the invention, a thermal spray, mist or atomizer device is created, has the means for pressure regulation, which is between the tank with the nebulizable or sprayable liquid compound or substance and the exhaust pipe of the internal combustion engine are arranged, these means laterally and in the vicinity of the Inlet nozzle are arranged, so that a substantially constant suction power is guaranteed at the entrance, independently the inclination of the spray, mist or atomizer device.

Further advantages and features of the invention are explained in more detail using an exemplary embodiment shown in the drawing.
It shows:

Figure 1 is a side elevation of a preferred embodiment of a spray, mist or atomizer device according to the invention,

Figure 2 is a front view, partially broken, along the line 2-2 of the device according to Figure 1,

Figure 5 and 4 sections along the lines J-J and 4-4 in Figure 2, · FIG. 5 shows a detail along line 5-5 in FIG. 3 and FIG. 6 shows an enlarged perspective view of a control device according to Figure 1.

In one drawing, the spraying, misting or atomizing device 10 generally has a frame 12 with an internal combustion engine 14 and a tank 16 for a liquid pesticide. A handle 18 allows the device to be carried by hand. A mixing tube 20 is used for atomization of the atomized substance of the front device from -les. By setting a throttle 24, the power of the internal combustion engine and at the same time the supply of the liquid substance are controlled, whereby the amount of nebulized or sprayed substance released is determined.

-5-

009841/1317

BATH ORIGINAL

A shaft 28 is arranged in such a way that it extends parallel to the output shaft 30 of the internal combustion engine 14. It carries a rotatably arranged pulley. A drive belt 31 is guided over this belt pulley and a belt pulley arranged on the shaft 30 and connects the two belt pulleys with one another. A fan or propeller 32 is mounted on the pulley and rotates on the shaft 28 as soon as the internal combustion engine is in operation. A side delimitation 34 and a base plate 35 of the frame delimit the pressure side of the fan. A space or a cavity-like depression 36 above the fan and the baffle structure within a lateral boundary of the frame 38 are connected to the surrounding air via openings 37 arranged in it. As a result, the rotary motion of the porcelain drives air into the recess, which creates a load on the internal combustion engine. In this way, a flow resistance is also generated on the internal combustion engine, so that air can only ^{enter or exit via the openings 37 ^ n} or from this recess. The outlet connection of the internal combustion engine is connected to the mixing tube 20 by means of a pipe 40 which has a Venturi nozzle 42 in order to allow the atomized or sprayed mixture to exit from the free opening of the tube. The tube 20 has baffles in the interior, so that the exhaust gases and the solution or liquid substance entrained by them are subjected to changes in direction and are intimately mixed in this way. The baffle assembly has a wide outer tube 43 and a perforated inner tube 44 of smaller diameter, the inner tube being closed at its inner end and open at its outer end and supported within an annular end portion 46 which is the outer end of the tube 43 concludes. The exhaust gases from the internal combustion engine therefore enter the inner pipe via an annular space between the pipes and are expelled from the outer open end of the inner pipe. An insulation 48 surrounds the pipe 43, so that the user is protected against accidental burns with a fairly high degree of certainty.

-6- 009841/1317

The tank 16 for the pest control agent is connected to an evaporator 52 (FIGS. 3 and 5) via a suitable pipe 50. The evaporator has a flow regulator 54 at its inlet, which is opened and closed by a float 56, which in turn is rotatably arranged within the evaporator. In this way, a constant liquid level 59 of the agent in the evaporator interior space 60 is maintained as a function of the position of the float 56. The interior 60 of the evaporator is connected via a flow valve 62 (FIG. 5) with an adjustable valve 64 for the liquid substance to be nebulized or sprayed with a corresponding pipeline 66 with an exhaust pipe 40 (FIG. 4}, which in the direction of the flow is arranged behind the Venturi nozzle 42.

The flow control valve 42 is connected to a shaft 48, which in turn is connected at its upper end via a coupling 67 to a shaft 72 which is actuated by the throttle lever 24. The shaft 68 and the shaft 72 are guided in sockets 69 and 70 and perform a relative movement with respect to the frame. In addition, the lever 24 is connected to a lever 74 for regulating the output power of the internal combustion engine, the control device for the output power typically having a carburetor or vaporizer with an adjustable control element for the fuel and the air inlet, which for a suitable fuel / air Mixture provides for starting and maintaining the operation of the internal combustion engine. The particular details of the construction of the control device for the output power of the internal combustion engine are not shown, since they do not form the subject of the invention. An important feature of the invention, however, is that the control of the internal combustion engine and the control for the liquid pesticide are linked and operated simultaneously. A linkage required for this has a lever 76 (FIG. 6) which is mounted rotatably about an axis 77 and comprises a shaft 72 with a slotted opening 78 and is supported against a sleeve 71 which in turn is fastened to the shaft. The top end

009841/1317 -7-

of the lever J6 is connected to the lever 74 via a bolt connection.

The linkage is adjusted in such a way that when the Internal combustion engine no atomized mixture is released from the cavity 60 of the evaporator, since the valve 62 'is closed is. In the unavoidable case, when the internal combustion engine is under normal full power works, which is determined by the position of the lever 74 moving it sideways to the right (Fig. 1) is moved, namely as a result of a movement of the HebVls ". 24, the stem 68 is also raised and opens the control valve 62 for maximum flow. There is then an im general proportional relationship, namely from the operating state in which the engine is idling and not foggy Mixture is released up to the operating state in which it works at full power and maximum formation of a nebulized or sprayed mixture takes place.

Due to the free connection between the shaft 72 and the Sleeve 71, the internal combustion engine can be started and brought to operating temperature, the output power through Moving the lever 76 and the shaft 74 can be changed by hand and independently of the lever 24.

In addition to the control means described above, the outlet valve 64 allows the flow rate of insecticide to be passed between the evaporator and the exhaust port% n to each. adapt any output power of the internal combustion engine to give the desired degree in terms of composition and the specified amount. Such an adjustment can also be made to compensate for different viscosities of the various liquid insecticides. As soon as the part 80 of the valve 64 is set for a specific solution and a desired characteristic quantity to be dispensed, no further setting is required; the amount to be dispensed by the mist or atomizer device is then determined by actuating the throttle 24. '-i'f'i ^.

009841/1317

- 20H934

3 &

With reference to the above-mentioned advantageous arrangement of the individual parts of the system, it should be noted that the evaporator 52 and the Venturi nozzle 42 of the pipeline 40 side by side with respect to the direction of the outlet connection 20 are arranged adjacent. This means that even among changing Inclination of the outlet connection in downwards - upwards - or in the horizontal direction the vertical distance between the Venturi nozzle 42 and the liquid level 59 in the evaporator in general is kept constant. For this reason, the amount of fluid under uniform pressure is applied to the exhaust port fed and achieved a uniform nature of the atomized mixture, regardless of the inclination of the outlet 20th

The liquid can from the tank 16 to the evaporator 52 as well be transported by gravity alone. In this case the tank is placed above the evaporator. It It is also possible to pressurize the tank by means of a line, not shown, air pump arranged on the liquid tank in order to transport the liquid to the evaporator regardless of their mutual arrangement at different heights. In both cases, the nature of the nebulized mixture is constant and generally independent of the Inclination of the arrangement, since the evaporator 52 laterally next to the Venturi nozzle 42 is arranged and the pressure of the liquid substance or solution between them is constant.

The entire spraying, misting or atomizing device can be light in weight, since the internal combustion engine 14 used is preferably a two-stroke engine made of light metal. Since the internal combustion engine is loaded all the time by the propeller 12 v.'irü, the same volunina heated exhaust gases are continuously used. Serve evaporation of the liquid. With an internal combustion engine before, 3 HP it is possible to evaporate about 7.5 to 15 liters of liquid per hour:; u and to atomize a nebulized mixture with particles ir .-. Inches of C, 5 to 50 i-i-iikrcn, whereby ;> n: .eo ^ r üin. ^r jteilung controlling the throughput of the

0 0 9 8 A1 / 1 3 1 7 -> ^ ₀ original

'Valve 64 depends. The ejection of the misted noise from the device is achieved only by adding the solution • with evaporation to the exhaust gases, with a blower or similar device is not required. The setting of the valve 64 results in the desired dry or wet nature of the atomized mixture, which is essentially remains constant regardless of the amount of atomized mixture dispensed. This follows from the fact that the valve 62 for controlling the flow rate and the throttle of the Combustion engine at the same time by operating the lever 24. adjusted. That is why there has been an increase in speed of the internal combustion engine result in a larger amount of exhaust gases, which to the same extent a larger amount of liquid insecticide evaporated, which is fed to the exhaust of the internal combustion engine. The venturi creates at the inlet a negative pressure for the liquid. On the one hand, the negative pressure pulls Liquid into the mixing tube for rapid mixing with the exhaust gases and, on the other hand, causing rapid expansion of the liquid, so that complete evaporation of the liquid takes place without the need for extremely high temperatures that break down heat-sensitive insecticides

could. '■

Both the liquid insecticide and the fuel for the internal combustion engine can easily use the appropriate Storage containers are supplied via openings arranged on the top. The tank for the insecticide furthermore has a filter 86 which is located in the “opening is removably arranged and helps to hold back solid contaminants from the internal parts of the spray, mist or atomizer device, whereby the operation is more reliable. To that To facilitate carrying the device, a shoulder strap or strap 88 can be attached to the frame 12 and over the shoulder " of the user. The internal combustion engine 0.4 is started by means of a starting line 19 and in a similar manner

-10-

0Q98A1 / 1317

stopped by means of a switch 92.

The invention is not limited to that shown or described Embodiment limited. It also includes all partial and sub-combinations of the features described and / or drawn.

009841/1317

Claims (6)

. 20U93A EXPECTATIONS 1 * Thermal, spraying, fogging or atomizing device consisting of an internal combustion engine with a control element for the output power and an exhaust pipe for the 'exhaust gases, a mixing pipe, an outlet duct between the exhaust pipe of the internal combustion engine and the inlet of the mixing pipe, a tank for a sprayable or nebulizable liquid substance, a control device in a connecting channel between the tank and the mixing tube to control the delivery of the liquid substance, which is added to the exhaust gases of the combustion engine and together with these from the mixing tube as sprayed, nebulized or atomized Mixture are ejected dg, d. a linkage (72, 76, 78) between a control device (24, 74) for the output power of the internal combustion engine and a control device (68, -62) for the amount of liquid substance (62) is arranged , and that the linkage with increasing Power of the internal combustion engine opens a control device for the liquid substance that a fan (32) with a drive device (31) between it and a shaft (30.) of the _..... ". Internal combustion engine is provided and that also an arrangement of baffles (35, yj, 38) for the fan is available in order to load the internal combustion engine without external work. 2. Thermal spray, mist or atomizer according to claim 1 dg, that the control device (50, 56, 62, 67) for the throughput of the liquid substance has an interior (60) with an inlet valve controlled by a float (52) ( 54), which maintains the level (59) of the liquid substance in the interior (60) at a predetermined height, and that a control valve (64, 80) is pressed between the interior and the line for the liquid substance. 3. Thermal spray, mist or atomizer according to claim Al or 2 d.g. that a Venturi nozzle (42) in the outlet channel (40) namely in the direction of the flow between the entrance of the 0 0 9841 <ΐ3 _; 17 _ ₂ -._: _ 20H934 Mixing tube and the entry point for the liquid substance is arranged in the mixing tube. 4. Thermal spray, mist or atomizer according to claim 1, 2 or j5 gekennzelehnt characterized in that the interior (60) and the Venturi nozzle 42 are arranged side by side in such a way that ■ that the mixing tube (20) is inclined without any noticeable change in the height difference between the interior and the venturi nozzle can. 5 · Thermal spray, mist or atomizer according to claim 1, 2 or J, characterized in that the cavity (6o) and the Venturi nozzle (42) are arranged approximately at the same height. 6. Thermal spray, fog or atomizer according to claims 1 to 4, characterized in that an adjustable Needle valve is arranged between the tank and the line for the liquid substance by adjusting it the. Supply of liquid substance into the line for change the given composition of the atomized mixture is changed. 009841/1317 Blank page