DE102015109166A1 - Two-fluid nozzle for producing an atomized jet - Google Patents

Abstract

The present invention relates to a two-fluid nozzle (12) for producing an atomized jet of a liquid-gas mixture. The two-substance nozzle (12) comprises a spray lance with an outlet opening (32) and a first and a second channel in each case within the spray lance. The first channel comprises a first inlet for the supply of a liquid and the second channel comprises a second inlet for the supply of a gaseous medium. The spray lance has a length of at least 30 mm and has a maximum outer diameter in the range of 3 mm to 8 mm.

Description

FIELD OF THE INVENTION

The present invention is in the field of cleaning technology and relates to a two-fluid nozzle for producing an atomized jet, in particular a two-fluid nozzle for a hand cleaning device.

BACKGROUND OF THE INVENTION

Manual cleaning devices or cleaning devices that can be guided by hand are used to clean different objects in different areas.

For example, hand-cleaning devices are used in laboratory technology, in the automotive sector, in the food industry, in medical technology and in the household. The objects to be cleaned may include, for example, workpieces, manufacturing products, equipment and devices at an intermediate stage of their manufacture or after their manufacture. It is also possible to clean only parts or certain areas of objects.

Known cleaning devices that can be cleaned by means of an atomized jet of a liquid-gas mixture have one or more ports for the supply of a liquid and a pressurized gas. An example of such a hand cleaning device is in the DE 4223006 C2 specified. The atomized jet can be cleaned mechanically and / or chemically.

The atomized jet can be provided by means of a two-fluid nozzle. In the two-fluid nozzle, a liquid and a pressurized gas are combined. This creates a liquid-gas mixture, which emerges at the nozzle outlet as an atomized jet.

SUMMARY OF THE INVENTION

The present invention has for its object to provide a two-fluid nozzle for a hand cleaning device, which allows a more versatile usability of the hand cleaning device and improved cleaning. Another object of the present invention is to provide a cleaning apparatus which is versatile and allows improved cleaning.

These objects are achieved by the features of claims 1 and 7. Advantageous embodiments and further developments are specified in the dependent claims.

The present invention relates to a two-fluid nozzle for producing an atomized jet of a liquid-gas mixture. The two-component nozzle comprises a spray lance having an outlet opening and a first and a second channel, each within the spray lance, wherein the first channel comprises a first inlet for the supply of a liquid and the second channel comprises a second inlet for the supply of a gaseous medium. The spray lance has a length of at least 30 mm and a maximum outer diameter in the range of 3 mm to 8 mm. Due to this narrow elongated shape, it is possible that the outlet opening of the spray lance can penetrate to areas or points to which the outlet openings of nozzles with a wider spray lance or nozzles without spray lance can not penetrate. Accordingly, the two-fluid nozzle also allows cleaning in hard to reach places, so that parts or bodies can be cleaned using the two-fluid nozzle according to the invention, the cleaning is not otherwise readily or only with difficulty possible. The two-fluid nozzle thus leads to an extension of the application area, d. H. the area in which a cleaning device with a two-fluid nozzle can be used for cleaning. In addition, the two-fluid nozzle also allows for improved cleaning, because hard-to-reach areas can be cleaned better.

The length of the spray lance can be for example between 30 mm and 500 mm. Within this length range, there is a good compromise between improved accessibility and good handling and compact design of dual-fluid nozzle cleaner. Depending on the application, the two-fluid nozzle can be made longer or shorter. In other embodiments, the spray lance may therefore be longer than 500 mm.

In a preferred embodiment, the first channel is formed by a cannula, which can be detachably received in the spray lance. This makes it possible to replace the cannula, for example, if it is defective, clogged or blocked. In this case, therefore, not the entire two-fluid nozzle must be replaced. Instead, the replacement of the cannula, which serves to supply a liquid for generating the atomized jet, may be restricted.

In a preferred embodiment, the cannula has a luer-lock connection, so that the cannula can be connected with a luer-lock connection. This connection allows a fast and secure connection that is detachable. In addition, this port is also used as standard for cannulas, for example, for cannulas, which are used in the medical field. Thus, the two-fluid nozzle can be used with cheap, easily available standard cannulas, without in the case of replacement, the cannula would have to be replaced by an expensive, made only for the two-fluid nozzle special part.

The inner diameter of the cannula may for example be between 0.5 mm and 2 mm, and the outer diameter of the cannula may for example be between 0.55 mm and 3.4 mm. The specified outside diameter range includes the outside diameters of standard cannulas that are suitable for insertion and application in the present bi-fuel nozzle. The preferred inner diameters may vary depending on the application, for example as a function of the viscosity of the liquid and / or pressurization of the supplied gaseous medium. The above inner diameter range allows for many cleaning liquids to provide an atomized jet suitable for cleaning.

In an advantageous development, the spray lance comprises an outer tube which is adjustable along a longitudinal axis of the spray lance with respect to an outlet of the first channel. By means of such adjustment, the distance between the outlet opening of the spray lance and the outlet of the first channel, at which an added liquid emerges, can be changed. This makes it possible to change the opening angle of the atomized beam. For example, the outer tube can be adjusted so that the output of the first channel is located further inside the spray lance and has a greater distance from the outlet opening. In this case, the aperture angle of the atomized beam is reduced so that the atomized beam has a smaller diameter at the same location. In an opposite adjustment, it is the other way round.

The present invention further includes a cleaning device with a two-fluid nozzle according to the invention according to one or more of the aforementioned embodiments. The cleaning device can be guided by hand and has a connection, for example a compressed air connection, for a pressurized gas.

In an advantageous development, the cleaning device has a container for a liquid, wherein the container is pivotally mounted such that a change in alignment of a liquid in the container, which results from a change in orientation of the cleaning device, can be compensated by pivoting the container , The additional container makes it possible to store and carry the cleaning fluid directly on the cleaning device without having to supply it from outside the cleaning device, for example with the help of hoses. This facilitates handling, since the container is carried along with the leadership of the cleaning device directly, without having to pay attention to a fluid hose or the like. Due to the aforementioned pivotability of the container, it is possible that the container maintains its orientation even with different orientation of the cleaning device or the two-fluid nozzle or can be pivoted back into this. For example, the two-fluid nozzle may be directed upwards, for example for overhead cleaning. In this case, the container can still take an orientation due to the pivoting, in which the liquid is located within the container at the bottom of the container and can be promoted. Due to the pivoting can thus be ensured for different orientations of the two-fluid nozzle promotion of the liquid from the tank.

The container may also be pivotable so that by pivoting the container, the distance between the container and the spray lance can be increased. In other words, the container can be swung out of a space area located in an environment of the spray lance. Thereby it can be achieved that the spray lance is more accessible or that the accessibility in a particular application is not hindered by the container. This offers advantages for cleaning in places that are accessible to the spray lance only if it is not surrounded by the container.

In an advantageous embodiment, the container has a pivoting range of 360 °.

The cleaner continued to have a stop to prevent further pivoting of the container. The stopper can prevent the container from unintentionally swiveling into an area in which the container would be a hindrance to cleaning.

Alternatively or additionally, the cleaning device may also include a locking device with which the container can be fixed in a pivoting position. Thereby, an unwanted pivoting of the container can be prevented and it can be ensured that the container, for example, during cleaning, is in a respective desired pivot position.

In a further embodiment, the container is additionally or alternatively connected so as to be about an axis extending from a central axis of the Container is spaced, is rotatable. This makes it possible to change the position or arrangement of the container with respect to the remaining part of the cleaning device. For example, the cleaning device can be placed in a first rotational position of the container on the container. Furthermore, in a second rotational position of the container, a pivoting range of the container may be greater than in the first rotational position. Accordingly, the container can be pivoted to the first rotational position to turn off the cleaning device, for. When it is not needed. In the second rotational position, the container can be pivoted, for example, when the cleaning device is put into operation and the full swivel range is needed.

According to an advantageous development, the cleaning device further comprises a metering device for metering a flow of a medium, wherein the metering device comprises a first and a second part, each having a passage opening, wherein the two parts are mutually adjustable through a position in which the passage openings are aligned , and wherein in at least one of the parts is a trench which extends through the respective passage opening. The medium may comprise, for example, a gas or a liquid, so that with the metering device, the inflow of one of these media, that is, the amount supplied per time, can be changed. As a result, the composition of the atomized jet can be changed. Due to the trench through one of the passage openings, it is possible to increase the adjustment or metering, in which the medium in question flows or flows through both passage openings. This area, in which the flow through the metering device is made possible and can be metered, does not have to be restricted to the area in which the passage openings are aligned or partially aligned due to the trench. Even if the passage openings are not aligned, but are connected by the trench, a flow is possible. The flow or inflow then depends on the cross section of the trench.

Preferably, the trench extends in a direction in which the two parts are adjustable relative to each other, and preferably the cross section of the trench changes along its course. Accordingly, the two parts can be adjusted against each other so that one of the passage openings is located above the trench and thus the passage openings are connected by the trench. Because the cross-section of the trench changes, the flow through the metering device can be changed in an adjustment in which one of the passage openings is moved along the trench.

In a preferred embodiment, the cross section of the trench decreases from the passage opening towards its ends. This can be reduced with the metering device with a corresponding adjustment of the parts of the inflow of the medium.

In an advantageous development, the cleaning device further comprises a locking device for blocking a fluid supply. This makes it possible to switch by a lock on an operation in which only the supplied gaseous medium exits the outlet opening of the two-fluid nozzle. For example, this can be converted to a pure compressed air operation. As a result, after cleaning with a cleaning liquid and an atomized jet, the object can be dried. On the other hand, the object to be cleaned can first be blown off with a cleaning liquid prior to cleaning.

In the cleaning device according to the invention, a jacket flow of a gas is preferably provided in the second channel via the connection for the pressurized gas, which surrounds the first channel. The first channel is preferably in fluid communication with or in fluid communication with the container. In this arrangement, due to the sheath flow flowing past the outlet of the first channel, a suction can be created through the first channel or a negative pressure in the first channel, which leads to a delivery of a liquid from the container. The pumped liquid exits at the outlet of the first channel, mixes with the sheath stream. A stream or flow of a liquid-gas mixture is produced which emerges as an atomized jet at the outlet of the two-substance nozzle. Mixing may occur depending on the relative arrangement of the first and times channel outlets and the outlet ports to each other within and / or outside the two-fluid nozzle.

BRIEF DESCRIPTION OF THE FIGURES

In the following description, exemplary embodiments are explained in more detail with reference to exemplary drawings. In the drawings, like elements are identified by like reference numerals.

1 shows a cleaning device according to the invention with a two-fluid nozzle according to the invention according to an exemplary embodiment.

2 is an exploded view of the cleaning device of 1 ,

3 is an exploded view of the two-fluid nozzle of the invention 1 ,

4 is a sectional view of a leading part of the two-fluid nozzle of 3 ,

5 is a sectional view of a leading portion of the cleaning device of 1 ,

6 shows views of a metering device, which for the cleaning device of 1 can be used.

7 shows a part of the metering of the 6 in different views.

8th shows the cleaning device of 1 with two different pivot positions of a container.

9 shows two top views of the cleaning device of 1 with different rotational positions of the container.

DETAILED DESCRIPTION OF AN EXEMPLARY EMBODIMENT

1 shows an embodiment of a cleaning device according to the invention 10 with a two-fluid nozzle 12 a container 14 a handpiece 16 with operating lever 18 , a metering device 20 and a compressed air connection 22 ,

2 shows an exploded view of the cleaning device 10 of the 1 and 3 shows an enlarged view of the in 2 shown two-fluid nozzle 12 ,

The two-fluid nozzle shown 12 includes an outer tube 24 , a cannula 26 with a female luer-lock connector 28 , a tail 30 with an outlet opening 32 and a connector 34 , Like in the 2 shown, the two-fluid nozzle 12 over the connection piece 34 to a center piece 36 of the cleaning device 10 be connected. The outer tube 24 Can be detachable with the fitting 34 be connected, for example via a screw connection. Likewise, the tail can 30 detachable via a screw connection with the outer tube 34 get connected.

The cannula 26 can be connected via a luer lock connector via an adapter piece 38 with the middle piece 36 of the cleaning device 10 get connected. A Luer-lock connection has the advantage that it can be easily manufactured, namely by placing and rotating the parts to be joined, and just as easily can be solved again. In the in the 2 and 3 shown cannula 26 it is an easily available cannula, which may also be intended for use for medical and / or laboratory purposes.

As in the 1 to 3 can be seen, has the two-fluid nozzle 12 an elongated shape with a spray lance 40 passing through the outer tube 24 and the tail 30 is defined. In the embodiment shown, the spray lance 40 a length l in the range between 60 mm and 70 mm, for example of 65 mm and a maximum outer diameter d of about 7 mm. In some embodiments, not shown, the diameter of the spray lance 40 not constant, but changes along the spray lance 40 , Decisive for where the spray lance 40 can penetrate, but is - in addition to their length - their maximum outer diameter d. Due to this elongated configuration, it is possible with the outlet opening 32 to get too hard to reach places and make a cleaning on these. For example, it is possible to drive through the spray lance through narrow openings or introduce into narrow holes to perform a cleaning.

In other embodiments, not shown, the spray lance 40 also curved or bent. The spray lance 40 can be rigid or flexible. If flexible, it can be bent differently for different applications, further improving its usability.

4 shows a sectional view of a leading portion of the spray lance 40 in which the channels 26 is included. Like in the 4 is shown extending through the spray lance 40 a first channel 42 for forwarding a liquid and a second channel 44 for the forwarding of a gaseous medium, which comprises compressed air, for example. In the embodiment shown, the first channel 42 through the cannula 26 educated. Furthermore, in the embodiment shown, the first channel 42 in the middle of the spray lance 40 arranged and is from the second channel 44 jacketed.

The cannula 26 has an outer diameter smaller than the diameter of the outlet opening in the embodiment shown 32 is. Thus, as in the 4 the position of the outputs of the first and second channels is shown 42 . 44 with the position of the outlet opening 32 to match. In 4 the second channel tapers 44 in the tail 30 to the outlet opening 32 , whereby, in operation, the flow rate of the gaseous sheath flow in this area in the direction of the outlet opening 32 increases.

It is also possible that the output of the first channel 42 from the outlet opening 32 is spaced, for example by the outlet opening 32 with respect to the exit of the cannula 26 in the longitudinal direction of the spray lance 40 is offset. After this in 4 shown offset by the length x is the output of the first channel 42 at the position of the dashed line L. Such an offset can be adjusted, for example, that the outer tube 24 in relation to the cannula 26 along the longitudinal direction of the spray lance 40 is adjusted.

Such adjustment for changing the offset x can be achieved by unscrewing or screwing in the outer tube 24 out of or into the fitting 34 be made. To facilitate such adjustment, can on the outer tube 24 a corrugation 46 be provided, which is the rotation of the outer tube 24 facilitated for the adjustment.

By means of this aforementioned adjustment, the opening angle of one of the outlet opening 32 emerging atomized beam to be changed. For example, the beam diameter can be made smaller and thus the beam can be made more compact when the output of the first channel 42 or the outlet of the cannula 26 is placed in the spray lance. In 4 is schematically indicated that the opening angle α of the outgoing jet to the opening angle α 'decreases when the output of the first channel 42 from the outlet opening 32 by the length x in the spray lance 40 is put into it.

5 shows a sectional view of a leading part of the cleaning device 10 with a locking device 48 for blocking a fluid supply from the container 14 , In the embodiment of the cleaning device shown 10 is the first channel 42 in fluid communication with an internal volume of the container 14 , where the container 14 via a connection 52 is connected and the fluid connection in the embodiment shown by the terminal 52 runs. Using the locking device 48 the fluid connection can be interrupted and the interruption canceled again.

The locking and unlocking can for example via a toggle switch 50 be made. For example, the fluid connection can be interrupted when the toggle switch 50 is brought into a first position, and the interruption can be canceled when the toggle switch 50 placed in a second position, as in 5 is shown. Using the locking device 48 For example, it is possible to switch easily from operation with an atomized jet of a liquid-gas mixture to an operation in which no liquid but only gas is used. This is for example advantageous for drying after a liquid cleaning or for a cleaning in which only a blow-off is desired. Using the locking device 48 can be easily changed between the two modes without the cleaning device would have to be replaced or the cleaning device would have to be rebuilt consuming.

6a shows a side view of the metering device 20 out 1 and 6b shows a sectional view of this metering device 20 , The metering device 20 includes a first part 54 and a second part 56 each having a passage opening 58 respectively. 60 include. The first part 54 and the second part 56 are mutually adjustable, so that the passage openings 58 and 60 can be brought into superposition in which the passage openings 58 and 60 aligned.

In the illustrated embodiment, the first part is through a bushing 54 formed and becomes the second part by an outer bushing 56 educated. In other embodiments, the parts may also have other shapes, for example, each a cylinder or socket shape and a spherical shape, or vice versa.

The adjustment of the two parts 54 . 56 can be right at one of the parts 54 . 56 be made or by means of an actuating means, such as a setting wheel 60 as it is in 6 is shown.

The 7a shows an outside view of the socket 54 of the 6 and the 7b shows a sectional view of this socket 54 , Like in the 7 is shown, the bushing has 54 trenches 64 on, which in the direction of adjustment by a respective passage opening 58 the socket 54 run. For those in the 6 and 7 dosing device shown 20 corresponds to the direction of adjustment of the circumferential direction of the socket 54 and the outer sleeve 56 along which these parts can be adjusted against each other. Even if in the 6 and 7 for the socket 54 and for the outer socket 56 in each case several passage openings 58 respectively. 60 are shown, it is noted that the first part 54 also only one passage opening 58 can and that the second part 56 also only one passage opening 60 may have. It should also be noted that in other embodiments, not shown, the trenches 64 not just on the outside of the socket 54 must be provided, but additionally or alternatively on the inside of the outer sleeve 56 can be provided.

The arrangement of the trenches on the outside of a socket 54 however, has the advantage that the trenches can be made very easily, for example by passing through the opening from the outside 58 is milled.

Because of the trenches 64 offers the dosing device 20 the advantage that the supply of a pressurized gas can be continuously adjusted or metered over a further adjustment range. In other words, due to the trenches 64 is the adjustment range of the parts 54 . 56 , in which can be dosed, larger and not only extends to the area where the passage openings 58 . 60 aligned or partially aligned. This allows finer and more accurate dosing.

If at the in 1 shown cleaning device 10 the metering device 20 a setting with maximum aligned openings 58 . 60 has, as in 6b is shown, there is a gas connection between the second channel 44 and the compressed air connection 22 with maximum passage. This connection passes through the passage openings 58 and 60 the socket 54 and the outer sleeve 56 , If the two openings 58 and 60 are exactly superimposed and aligned, the channel has through these two openings 58 and 60 a maximum cross-section to allow maximum gas flow.

If the passage openings are displaced by an adjustment to each other, reduces the cross-section of the passage channel and the gas flow is reduced.

Due to the ditch 64 can still be a channel present when the passage openings 58 . 60 no longer overlap (even partially) but the passage openings 58 . 60 continue through the ditch 64 connected to each other. In this case, the gas flow through the minimum cross section of the trench between the openings 58 and 60 determined and can be changed and metered with the adjustment along the trench.

The trench thus allows a finer and more continuous adjustment over a wider range of rotation, as it is possible only with two, for example, circular passage openings. The adjustment range for the dosage can vary over the length and the course of the trench 64 be defined. The respective inflow at a relative positioning position of the parts 54 . 56 can be about the depth and width or the cross section of the trench 64 be defined.

8th shows a side view of the cleaning device 10 with two different swivel positions of the container 14 ,

At the cleaning device 10 of the 1 is the container 14 over the connection so to the middle piece 36 connected to the cleaning device that the container 14 around the in the 8th and 9a shown pivot axis S is pivotable. The pivot axis S extends transversely to the cleaning device 10 and to the two-fluid nozzle 12 or to the spray lance 40 and perpendicular to a central axis M of the container 14 , The course of the central axis M is in the 8th and 9a shown.

At the first in 8th shown pivot position is the container 14 below the spray lance 40 and is oriented so that the center axis M and the spray lance 40 perpendicular to each other. This pivotal position is preferably for horizontal use of the cleaning device 10 used in which the cleaning device with a horizontally oriented spray lance 40 is used. In this position is the container 14 vertically aligned so that a liquid within the container at the bottom of the container 14 and a suction lance or hose (not shown) can be immersed in the liquid. In such a position of the container 14 can be ensured that the liquid from the bottom of the container via the suction lance (not shown) from the container into the first channel 42 is conveyed or sucked.

At the second in 8th shown pivot position of the container are the spray lance 40 and the center axis M of the container 14 aligned in parallel. This arrangement is preferably used for an overhead operation in which the spray lance 40 points upwards. Due to the pivoting must be at a tilt of the cleaning device 10 or the spray lance 40 in such an orientation of the container 14 not be swiveled. Instead, can container 14 stay vertically aligned or swiveled back to vertical orientation. As a result, it can also be ensured, even when changing over to such an overhead operation, that a suction tube dips into the liquid within the container and the liquid is further conveyed.

Even if in 8th only two pivoting positions are shown, it should be noted that the container 14 preferably 360 ° about the pivot axis S can be pivoted and that the cleaning device 10 at each of the thereby taken swing angle of the container 14 can be operated.

The cleaning device 10 may also include a stop (not shown) to prevent further pivoting of the container. By such a stop (not shown) can be prevented that the container 14 unintentionally pivots into an area in which the container 14 would be a hindrance to a cleaning. For example, a single stop (not shown) may be provided for this purpose. This can be arranged on the edge of an undesired area and thereby pivoting in of the container 14 prevent in this area for only one pivoting direction. In In this case, the container 14 continue to be 360 ° swivel.

In other embodiments, two or more stops (not shown) may also be provided at different positions. For example, two stops (not shown) may each be provided at an edge of the undesired area. As a result, the unwanted area can be excluded from the swivel area. For example, a range of 90 ° around the spray lance 40 be excluded in the container 14 can not swing into it. In these embodiments, the container is then preferably pivotable only by 270 °.

The number and positions of the stops may be different in different embodiments. Accordingly, in different embodiments, the size and / or the relative arrangement of the area, in which can not be pivoted, may be different.

The cleaning device 10 may also include a locking device (not shown), with which the container 14 can be fixed in a desired pivot position. This may cause unwanted pivoting of the container 14 be prevented and ensure that the container 14 For example, during cleaning, located in a respective desired pivot position. The detection can be done for example for any pivot position from a 360 ° swivel range, the determined position can be changed arbitrarily.

9 shows two top views of the cleaning device 10 , where the container 14 in the 9b is in a first rotational position and in the 9a is in a second rotational position.

About the connection 52 is the container 14 connected so that the container 14 is rotatable about a rotation axis D, wherein the rotation axis D is spaced from the central axis M. In the embodiment shown, the axis of rotation D and the center axis M are parallel to each other. Due to this rotation about the rotation axis D, the container 14 in the 9b shown rotated first position in which the container 14 below the middle piece 36 located and the cleaning device 10 can be parked on the container. This compact position, in which the swivel range of the container 14 may be limited, is preferably prepared when the cleaning device 10 is not in operation and is put aside. By placing it on the container only a small footprint is needed and the cleaning device is also easier to find, as it is upright from a distance better recognizable. In addition, the container can maintain an upright or vertical orientation, whereby leakage of a cleaning liquid from the container 14 can be prevented.

To the cleaning device with different orientations of the spray lance 40 Operating in a range of 360 °, the container becomes 14 preferably rotated in the second rotational position, in 9a is shown. In this position of rotation is the container 14 no longer below the center piece 36 but next to it, and is in the full 360 ° range about the pivot axis S pivotally.

For a cleaning operation, the cleaning device 10 via the compressed air connection 22 connected to a compressed air supply and the container 14 is filled with a cleaning liquid, which may include, for example, water and / or - depending on the particular application - a suitable other liquid cleaning agent. By the operation of the operating lever 18 will connect between the second channel 44 and the compressed air connection 22 manufactured, so that a compressed air flow through the cleaning device 10 and the second channel 44 can flow.

During operation of the operating lever 18 This airflow can be done using this dosing device 20 be dosed.

The first channel 42 is in fluid communication with the internal volume of the container 14 , For example, via a suction lance or a suction hose (not shown in the figures), wherein the fluid connection through the locking device 48 can be interrupted.

When the compressed air flow at the outlet of the first channel 42 flows past, a negative pressure is generated within the first channel, which leads to a promotion of the cleaning liquid from the container 14 to the exit of the first channel 42 leads (so-called Venturi effect). By the in 4 shown rejuvenation of the second channel 44 to the outlet opening 32 the flow rate is increased and the Sogeffekt amplified. Behind the exit of the first channel 42 the air flow and the cleaning fluid mix so that at the outlet opening of the two-fluid nozzle 12 an atomized jet is provided from a liquid-gas mixture. The mixing can be done inside and / or outside the two-fluid nozzle 12 respectively. In the arrangement shown the 4 in which the output of the first channel 42 at the position of the outlet opening 32 is located, finds the mixing outside of the two-fluid nozzle 12 instead of.

Using the dosing device 20 can set up the composition of the atomized jet be changed and adjusted easily and continuously during operation.

About the locking device 48 can be flexibly interrupted during operation, the liquid supply in a simple manner, so that the cleaning device can be used only for blowing or drying, possibly even only briefly until a swing to the two-component operation.

The pivotability of the tank allows operation in different orientations, whereby the cleaning device is more flexible.

Using the long and narrow spray lance 40 can be cleaned even hard to reach places.

Depending on the application, the opening angle of the jet can be adjusted in a simple manner during operation, namely by adjusting the outer tube 24 along a longitudinal direction of the spray lance 40 so that it is possible to switch continuously between a wide, wide beam, for example for misting or spraying, and a narrow, more concentrated beam, for example for pointy intensive cleaning.

After operation or interruption of operation, the container may 14 can be brought into the first rotational position and can the cleaning device 10 for a long time or only for a short time on the container 14 be turned off.

It should be noted that the above-described embodiment described in detail is merely exemplary of the invention and should not limit it. The scope of the invention is determined by the appended claims.

LIST OF REFERENCE NUMBERS

10

cleaner

12

two-fluid nozzle

14

container

16

handpiece

18

actuating lever

20

metering

22

Compressed air connection

24

outer tube

26

cannula

28

Luer lock connector

30

tail

32

outlet

34

connector

36

centerpiece

38

adapter piece

40

Spray lance

42

First channel

44

Second channel

46

knurl

48

locking device

50

toggle switch

52

connection

54

First part, socket

56

Second part, external socket

58, 60

Port

62

Adjusting means, setting wheel

64

dig

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 4223006 C2 [0004]

Claims (19)

Two-substance nozzle ( 12 ) for producing an atomized jet of a liquid-gas mixture, which comprises a spray lance ( 40 ) with an outlet opening ( 32 ), a first and a second channel ( 42 . 44 ) each within the spray lance ( 40 ), the first channel ( 42 ) comprises a first inlet for the supply of a liquid and the second channel ( 44 ) comprises a second inlet for the supply of a gaseous medium, characterized in that the spray lance ( 40 ) has a length of at least 30 mm and a maximum outer diameter in the range of 3 mm to 8 mm. Two-substance nozzle ( 12 ) according to claim 1, wherein the spray lance ( 40 ) has a length between 30 mm and 500 mm. Two-substance nozzle ( 12 ) according to claim 1 or 2, wherein the first channel ( 42 ) through a cannula ( 26 ) is formed, which releasably in the spray lance ( 40 ) can be recorded. Two-substance nozzle ( 12 ) according to one of the preceding claims, in which the cannula ( 26 ) a luer lock connector ( 28 ) having. Two-substance nozzle ( 12 ) according to one of the preceding claims, in which the cannula ( 26 ) has an inner diameter between 0.5 mm and 2 mm and an outer diameter between 0.55 mm and 3.4 mm. Two-substance nozzle ( 12 ) according to one of the preceding claims, in which the spray lance ( 40 ) an outer tube ( 24 ), which along a longitudinal axis of the spray lance ( 40 ) with respect to an output of the first channel ( 42 ) is adjustable. Cleaning device ( 10 ) with a two-fluid nozzle ( 12 ) according to one of the preceding claims, which can be guided by hand and which has a connection ( 22 ) for a pressurized gas. Cleaning device ( 10 ) according to claim 7, comprising a container ( 14 ) for a liquid, wherein the container ( 14 ) is pivotally mounted such that a change in an orientation of a liquid in the container ( 14 ) due to a lack of alignment of the cleaning device ( 10 ), by pivoting the container ( 14 ) can be compensated. Cleaning device ( 10 ) according to claim 8, wherein the container ( 14 ) is pivotally mounted such that by pivoting the container ( 14 ) the distance between the container ( 14 ) and the spray lance ( 40 ) can be increased. Cleaning device ( 10 ) according to claim 8 or 9, wherein the container ( 14 ) has a swivel range of 360 °. Cleaning device ( 10 ) according to one of claims 8 to 10, which has a stop in order to pivot the container ( 14 ) to prevent. Cleaning device ( 10 ) according to one of claims 8 to 11, comprising a locking device, with which the container ( 14 ) can be fixed in a swivel position. Cleaning device ( 10 ) according to one of claims 7 to 12, comprising a container ( 14 ) for a liquid, wherein the container ( 14 ) is connected so as to be rotatable about an axis (D) spaced from a central axis (M) of the container. Cleaning device ( 10 ) according to claim 13, which in a first rotational position of the container on the container ( 14 ) and in which in a second rotational position of the container ( 14 ) a swivel range of the container ( 14 ) is greater than in the first rotational position. Cleaning device ( 10 ) according to one of claims 7 to 14, which has a metering device ( 20 ) for metering a flow of a medium, wherein the metering device ( 20 ) a first and a second part ( 54 . 56 ) each having a passage opening ( 58 . 60 ), the two parts ( 54 . 56 ) through a position in which the passage openings ( 58 . 60 ), are mutually adjustable, and wherein in at least one of the parts a trench ( 64 ) which passes through the passage ( 58 . 60 ) proceeds. Cleaning device ( 10 ) according to claim 15, wherein the trench ( 64 ) in a direction in which the two parts are mutually adjustable, and in which the cross section of the trench ( 64 ) changes along its course. Cleaning device ( 10 ) according to claim 15 or 16, wherein the cross section of the trench ( 64 ) from the passage opening ( 58 . 60 ) decreases towards its ends. Cleaning device ( 10 ) according to one of claims 7 to 17, which has a blocking device ( 48 ) for blocking a fluid supply. Cleaning device according to one of claims 8 to 18, wherein in the second channel ( 44 ) over the connection ( 22 ) for the pressurized gas Sheath flow of a gas can be provided, the first channel ( 42 ), the first channel ( 42 ) in fluid communication with the container ( 14 ) or can be brought into fluid communication with this.

Images