Device for encapsulating a liquid jet with an air flow and liquid dispensing device

Abstract

The invention relates to a device for wrapping a liquid jet (70) widening in a fan shape with an air flow. The device (14; 154, 154; 204) has a housing (16; 204) with a through-channel (18); 206, 206; 252) having an inlet section (28) and an outlet section (30), the outlet section (30) extending to the outlet opening (24) and widening in a fan-shaped manner in the beam plane (34) with gradual approach to the outlet opening (24), and wherein the device has a nozzle carrier assembly (36) which sinks into the inlet section (28) and is surrounded by an air delivery chamber (100), the nozzle carrier assembly has a nozzle carrier part (38) which forms a liquid inlet channel (42) and has a first end region (46), at which a flat jet nozzle (12) can be detachably mounted. In order to further improve the device in such a way that the flat beam nozzle (12) can be mounted on the nozzle carrier part (38) in an operable manner, the invention proposes that the device has an orientation and locking device (78; 172) for orienting and locking the flat beam nozzle (12) in a predetermined rotational position relative to the beam plane (34) of the output section (30). The invention further relates to a liquid dispensing device (10, 150, 200, 230, 250) having such a device and a flat jet nozzle.

Description

Technical Field

[0001] The present invention relates to an apparatus for enveloping a fan-shaped widening liquid jet with an airflow, wherein the apparatus has a housing surrounding a through channel, wherein the through channel has an input section with an inlet opening and an output section connected to the input section, wherein the output section extends to an outlet opening and widens in a fan shape in the jet plane as it approaches the outlet opening, and wherein the apparatus has a nozzle carrier assembly recessed in the input section and surrounded by an air delivery chamber, wherein the nozzle carrier assembly has a nozzle carrier portion constituting a liquid input channel and having a first end region facing the output section of the through channel, and wherein a flat jet nozzle for dispensing the liquid jet can be releasably fitted at the first end region.

[0002] Furthermore, the present invention also relates to a liquid output device for outputting a liquid jet that is surrounded in a hood-like shape and widened in a fan shape by an airflow, the liquid output device having the above-described type of equipment and a flat jet nozzle that can be releasably fitted to a first end region of a nozzle-bearing portion. Background Technology

[0003] For example, a flat beam nozzle for distributing a fan-shaped liquid jet in the beam plane is used as an accessory for pressure cleaning equipment, enabling the fan-shaped liquid jet to sweep across the object to be cleaned. The flat beam nozzle can, for example, be integrated into a beam fitting. For example, pressurized water can be used as the liquid. Such a flat beam nozzle is known from WO2014 / 090333 A1.

[0004] The fan-shaped liquid jet ejected from the flat beam nozzle is subjected to interaction with the surrounding air on its way to the object to be cleaned. As a result, the liquid jet is slowed down and loses its compactness, which impairs the cleaning effect. To mitigate this effect, JP 2004 / 223409 A discloses a liquid output device in which, in addition to the flat beam nozzle, a device for enveloping the fan-shaped liquid jet discharged from the flat beam nozzle is employed. This device has a housing surrounding a through channel. The through channel has an input section with an inlet opening and an output section connected to the input section. The output section extends to the outlet opening of the through channel and fan-shaped widens in the jet plane as it approaches the outlet opening. The flat beam nozzle is held at a first end region of a nozzle carrier portion, which is designed as a supply pipe and submerged in the input section of the through channel. The supply pipe is surrounded by an air delivery chamber within the input section. Under the action of the liquid jet discharged from the flat beam nozzle, air is drawn into the through-channel via the air delivery chamber. This air forms an air shroud that surrounds the liquid jet and can be discharged together with the liquid jet through the outlet opening. This air shroud reduces the interaction between the liquid jet and the surrounding air, particularly reducing the deceleration of the liquid jet and minimizing the impact on the compactness of the liquid jet. Therefore, the liquid jet discharged from the flat beam nozzle can be shrouded by the airflow, thereby reducing the interaction between the liquid jet and the surrounding air. This improves the achievable cleaning performance. However, assembling the flat beam nozzle onto the nozzle carrier portion designed as a supply pipe is less convenient because care must be taken during assembly to ensure that the flat beam nozzle occupies a rotational position relative to the jet plane of the output section of the through-channel, such that the fan-shaped liquid jet discharged from the flat beam nozzle is oriented coplanarly with the jet plane, so that the liquid jet can flow through the output section virtually unobstructed. Summary of the Invention

[0005] Therefore, the objective of this invention is to further improve the device according to its type, so that the flat beam nozzle can be mounted on the nozzle carrier in a more convenient manner.

[0006] According to the present invention, in a device of the type described at the beginning, this task is accomplished by having an orientation and locking mechanism for orienting and locking the flat beam nozzle relative to the beam plane of the output section of the through channel in a predetermined rotational position.

[0007] The device according to the invention has an orientation and locking device that facilitates the assembly of a flat beam nozzle onto a nozzle support portion. With this orientation and locking device, the flat beam nozzle can be oriented and locked in a rotational position such that the fan-shaped liquid jet exiting the flat beam nozzle is coplanar with the jet plane of the output section of the through-channel.

[0008] In an advantageous embodiment of the invention, the nozzle carrier assembly has a nozzle holding portion that can be releasably connected to the nozzle carrier portion. The nozzle holding portion is configured to hold the flat beam nozzle in a first end region of the nozzle carrier portion in a manner that prevents axial movement but allows rotation about the longitudinal axis of the nozzle carrier portion. In this design, the flat beam nozzle can be held in the first end region of the nozzle carrier portion by means of the nozzle holding portion in a manner that prevents axial movement, wherein the flat beam nozzle can rotate about the longitudinal axis of the nozzle carrier portion. This allows the flat beam nozzle to be oriented and locked in further assembly by means of an orientation and locking device, such that the fan-shaped, broadened liquid jet exiting the flat beam nozzle is flush with the jet plane of the output section of the through-channel.

[0009] Advantageously, the nozzle carrier portion has a plug element constructed at its first end region, to which the flat beam nozzle can be connected in a pluggable and detachable manner. This allows for particularly simple assembly of the flat beam nozzle at the first end region of the nozzle carrier portion, i.e., the flat beam nozzle can be inserted into or mounted onto the first end region.

[0010] In particular, the nozzle carrier portion can be designed as a plug-in connector. This allows the flat beam nozzle sleeve with the plug-in sleeve to be easily assembled onto the plug-in connector by simply inserting the plug-in sleeve into the plug-in connector.

[0011] In a preferred embodiment of the invention, the orientation and locking device has a U-shaped or substantially U-shaped clamping portion having two sides interconnected via tabs. The clamping portion is insertable into an opening in the housing, the opening receiving the tabs in a form-locking manner. The sides extend into the input section of the through-channel and are configured to receive the flat beam nozzle therebetween in a form-locking manner. In such an embodiment of the invention, the flat beam nozzle can be assembled in a first assembly step at a first end region of the nozzle-bearing portion and axially fixed by means of the nozzle-retaining portion. Subsequently, the flat beam nozzle can be oriented in a predetermined rotational position by means of the clamping portion. For this purpose, the U-shaped or substantially U-shaped clamping portion can be inserted into an opening in the housing, wherein the tabs of the clamping portion are received by the opening in a form-locking manner, and the sides of the clamping portion extend into the input section of the through-channel and receive the flat beam nozzle therebetween in a form-locking manner.

[0012] In order to form a shape-locking connection between the flat beam nozzle and the side of the clamping part, the flat beam nozzle may have, for example, two opposing flat sections on its outer side, and the side of the clamping part will be able to abut against these flat sections respectively.

[0013] Of particular advantage is that the two sides of the clamping section, on their outer sides away from the flat beam nozzle, can be supported by at least one retaining rib in the input section of the housing that extends into the through channel. This increases the mechanical load-bearing capacity of the sides of the clamping section.

[0014] Advantageously, the clamping part can be locked to the housing in a releaseable manner.

[0015] For example, it can be configured such that two opposing locking hooks are arranged at the joint of the clamping part, and after the clamping part is placed into the opening, these locking hooks respectively engage with the edge section of the opening of the housing from the rear.

[0016] In an advantageous embodiment of the invention, the orientation and locking device has at least two retaining ribs rigidly connected to the housing and extending into the input section of the through channel, and a U-shaped or substantially U-shaped clamping portion having two sides interconnected via tabs. The nozzle retaining portion has a sleeve releasably connected to the nozzle carrying portion and has a flange formed at its end region away from the nozzle carrying portion. This flange is passable by a flat beam nozzle and has two opposing openings into which the sides of the clamp are recessed, wherein the sides are configured such that the flat beam nozzle is received between them in a form-locking manner. The sleeve has two opposing truncated portions on its outer side, on which at least one retaining rib of the orientation and locking device extending into the input section is respectively abutted. In one such design of the invention, a flat beam nozzle can be fitted at a first end section of a nozzle carrier and secured axially by means of a nozzle retaining portion, wherein the nozzle retaining portion is constructed with a sleeve that can be releasably connected to the nozzle carrier, particularly by screwing, and the sleeve has an axially projecting flange at its end region away from the nozzle carrier. The sleeve can be fitted onto the flat beam nozzle fitted at the first end region of the nozzle carrier, wherein the flat beam nozzle passes through the flange of the sleeve at its end region away from the nozzle carrier. The flange has two opposing openings into which the sides of the clamping portion of the orientation and locking device are recessed, wherein the sides are received between them in a form-locking manner. The flat beam nozzle is held against relative rotation on the sleeve by means of the clamp, and the sleeve itself is held against relative rotation on the housing by means of retaining ribs that extend into the input section of the through channel and are rigidly connected to the housing. For this purpose, the sleeve has two opposing truncated sections on its outer side, on which at least one retaining rib can be abutted respectively.

[0017] The form-locking connection between the side of the clamping part and the flat beam nozzle can be achieved, for example, by having two opposing truncated sections on its outer side, on which the clamping part can abut against the side of the clamping part.

[0018] Advantageously, two spaced-apart retaining ribs with orientation and locking devices can be abutted on the flat portion of the sleeve.

[0019] The rigid connection between the retaining rib of the orientation and locking device and the equipment housing can be achieved, for example, by making the retaining rib integrally connected to the housing.

[0020] Of particular advantage is that at least one retaining rib of the housing extending into the input section of the through channel can abut against the tab of the clamping portion. The retaining rib ensures that the clamping portion will not accidentally detach from the flange of the sleeve and the flat beam nozzle.

[0021] In a preferred embodiment of the present invention, the housing of the device includes a first housing portion and a second housing portion, wherein the two housing portions are connected to each other by means of material locking, shape locking and / or force locking.

[0022] The two housing parts can be screwed or welded together, for example.

[0023] In particular, it can be configured that the two housing parts are made of plastic, especially glass fiber reinforced plastic, and are integrally connected to each other by infrared welding.

[0024] In an advantageous design, the device according to the invention achieves particularly simple assembly by means that the region of the nozzle carrier assembly that is recessed into the input section of the through channel can be inserted into the input section in the axial direction and can be secured in a releasable manner in the axial direction by means of the fixing portion.

[0025] Advantageously, the retaining portion can be inserted into the opening of the housing, wherein the retaining portion and the opening form a shape-locking fit, and has at least one retaining arm recessed into an annular groove disposed on the outer side of the nozzle carrier portion. The advantage of this design is that after the flat beam nozzle is assembled at the first end region of the nozzle carrier portion, the nozzle carrier assembly can be inserted into the input section of the through channel and secured axially by means of the retaining portion.

[0026] Advantageously, the fixing part is configured as a U-shaped or substantially U-shaped clamping part having two sides connected to each other via tabs, which respectively form retaining arms recessed into the annular groove of the nozzle bearing part, wherein the opening of the housing receives the tabs of the clamping part in a form-locking manner.

[0027] As previously described, the housing of the device according to the invention can be configured to have two housing portions that can be interconnected by form-locking and / or force-locking. These housing portions can have protrusions extending into the input section of the through-channel, these protrusions being recessed into annular grooves located on the outer side of the nozzle-bearing portion. In one such design of the invention, after the flat beam nozzle is assembled at the first end region of the nozzle-bearing portion, the nozzle-bearing assembly can be inserted into one of the two housing portions such that the protrusions located on that housing portion are recessed into the annular grooves on the outer side of the nozzle-bearing portion. Subsequently, the other housing portion can be fitted onto the nozzle-bearing assembly such that the protrusions located on that housing portion are also recessed into the annular grooves on the outer side of the nozzle-bearing portion, thereby holding the nozzle-bearing assembly immovably between the two housing portions in the axial direction, and thereafter the two housing portions can be interconnected, for example, by screwing.

[0028] In order to supply pressurized liquid to the device according to the invention, in a preferred embodiment of the invention, the nozzle carrier assembly has a connecting portion for connecting the liquid delivery line, wherein the connecting portion is located at a second end region of the nozzle carrier portion away from the output section of the through channel. For example, a beam fitting or spray gun can be used as the liquid delivery line and connected to a pressure cleaning device via a pressure line.

[0029] Advantageously, the second end region of the nozzle carrier extends from the input section of the through channel. This facilitates user access to the connecting portion located at the second end region of the nozzle carrier.

[0030] A particular advantage is that the connecting portion is held in the second end region of the nozzle carrier in a manner that prevents axial movement but allows rotation about the longitudinal axis of the nozzle carrier. This design allows the user to rotate the device housing together with the nozzle carrier assembly relative to the connecting portion about the longitudinal axis of the nozzle carrier, thereby facilitating the user to guide the device along the object to be cleaned.

[0031] The connecting portion may, for example, have a connecting sleeve with internal threads to allow for screwing the connecting sleeve onto the liquid delivery line. The connecting sleeve is advantageously surrounded by a plastic sheath that facilitates screwing the connecting sleeve onto the liquid delivery line.

[0032] As previously stated, the present invention also relates to a liquid output device for outputting a liquid jet that is surrounded by an airflow in a dome shape and fan-shaped in the jet plane, wherein the liquid output device includes a device of the type described above and a flat jet nozzle that can be releasably mounted on a first end region of a nozzle-bearing portion.

[0033] The flat beam nozzle can be advantageously connected to the first end region of the nozzle carrier in a pluggable and releasable manner.

[0034] As described above, the first end region of the nozzle carrier portion may be configured with a connector, and the flat beam nozzle may include a connector sleeve designed to complement the connector, which can be fitted onto the connector.

[0035] The flat beam nozzle can be oriented and locked in a predetermined rotational position by means of an orientation and locking device. Advantageously, the flat beam nozzle has a nozzle housing with two opposing truncated sections for form-locking with the clamping portion of the orientation and locking device. Attached Figure Description

[0036] The following description of advantageous designs of the invention is used for detailed explanation in conjunction with the accompanying drawings. In the drawings: Figure 1 : A perspective view of a first embodiment of the liquid dispensing device is shown; Figure 2 It shows Figure 1 A top view of the liquid output device; Figure 3 It shows Figure 1 Side view of the liquid output device; Figure 4 It is shown in the form of an exploded diagram. Figure 1 A perspective view of the liquid dispensing device; Figure 5 The liquid output device is shown along... Figure 3 Sectional view along centerline 5-5; Figure 6 It shows Figure 1 The liquid output device along Figure 2 Sectional view along centerline 6-6; Figure 7 The liquid output device is shown along... Figure 3 Sectional view along centerline 7-7; Figure 8 It shows Figure 1 A perspective view of the nozzle carrier assembly of the liquid output device and the flat beam nozzle mounted on it; Figure 9 A perspective view of a second embodiment of the liquid dispensing device is shown. Figure 10 It shows Figure 9 A top view of the liquid output device; Figure 11 It shows Figure 9 Side view of the liquid output device; Figure 12 It shows Figure 9 An exploded perspective view of the liquid output device; Figure 13 The liquid output device is shown along... Figure 11 Sectional view along centerline 13-13; Figure 14 The liquid output device is shown along... Figure 10 Sectional view along centerline 14-14; Figure 15 The liquid output device is shown along... Figure 11 Sectional view along centerline 15-15; Figure 16 It shows Figure 9 A perspective view of the nozzle carrier assembly of the liquid output device and the flat beam nozzle mounted on it; Figure 17 : A perspective view of a third embodiment of the liquid dispensing device is shown; Figure 18 It shows Figure 17 A top view of the liquid output device; Figure 19 It shows Figure 17 Side view of the liquid output device; Figure 20 It is shown in the form of an exploded diagram. Figure 17 A perspective view of the liquid dispensing device; Figure 21 The liquid output device is shown along... Figure 19 Sectional view along centerline 21-21; Figure 22 The liquid output device is shown along... Figure 18 Sectional view along centerline 22-22; Figure 23 The liquid output device is shown along... Figure 19 Sectional view along centerline 23-23; Figure 24 It shows Figure 17 A perspective view of the nozzle carrier assembly of the liquid output device and the flat beam nozzle mounted on it; Figure 25 A perspective view of a fourth embodiment of the liquid dispensing device is shown. Figure 26 : A perspective view of a fifth embodiment of the liquid output device is shown. Detailed Implementation

[0037] Figures 1 to 8The figure schematically illustrates a first advantageous embodiment of a liquid output device according to the invention for outputting a fan-shaped liquid jet surrounded by an airflow, and generally occupies reference numeral 10. The liquid output device 10 has a flat jet nozzle 12 for distributing the fan-shaped liquid jet, and a device according to the first advantageous embodiment of the invention for enveloping the fan-shaped liquid jet with an airflow. Figures 1 to 8 In the figure, the device occupies reference numeral 14.

[0038] The device 14 has a housing 16 surrounding a through channel 18. The through channel 18 extends from an inlet opening 20 disposed on the rear side 22 of the housing 16 to an outlet opening 24 disposed on the front side 26 of the housing 16. Starting from the inlet opening 20, the through channel 18 has an input section 28, to which an output section 30 is connected in the direction of the front side 26. The input section 28 forms a narrowing 32 in its end region immediately preceding the output section 30, and the output section 30 fan-shaped widens from the narrowing 32 as it approaches the outlet opening 24, defining a beam plane 34. The beam plane 34 constitutes a plane of symmetry for the output section 30.

[0039] The nozzle carrier assembly 36, which has a nozzle carrier portion 38 and a nozzle holding portion 40, is submerged in the input section 28 of the through channel 18. The nozzle carrier portion 38 is configured with a liquid input channel 42, which is coaxially oriented with the longitudinal axis 44 of the nozzle carrier portion 38, which itself is coaxially oriented with the beam plane 34.

[0040] The nozzle carrying portion 38 has a first end region 46 facing the output section 30 of the through channel 18 and a second end region 48 extending away from the output section 30 and from the input section 28 of the through channel 18.

[0041] The nozzle carrier portion 38 has a first radially widened portion 50 and a second radially widened portion 52, which are approximately centrally located in the longitudinal direction. These widened portions extend over the entire periphery of the nozzle carrier portion 38 and define an annular groove 54 between them. A fastening section 56 of the nozzle carrier portion 38 is connected to the second radially widened portion 52. This fastening section transitions via a radially inwardly pointing step into a plug element configured as a connector 58, which forms the first end region 46 of the nozzle carrier portion 38. The fastening section 56 carries an external thread 60.

[0042] The flat beam nozzle 12 can be inserted into the connector 58 with a sealing ring (not shown) in between. For this purpose, the flat beam nozzle 12 is constructed with a connector sleeve 62 that is complementary to the design of the connector 58. The connector sleeve 62 is connected to a nozzle housing 66 having a nozzle outlet 68 via a radially inwardly pointing step 64. The nozzle outlet 68 is configured in a known manner such that pressurized liquid (preferably water) supplied to the flat beam nozzle 12 is distributed from the flat beam nozzle 12 in the form of a fan-shaped, broadened liquid jet 70. Figure 5 The image shows a fan-shaped liquid jet 70, which, when the flat jet nozzle 12 is correctly oriented, will actually flow unobstructed through the output section 30 and the outlet opening 24.

[0043] To axially fix the flat beam nozzle 12 to the nozzle support portion 38, a nozzle retaining portion 40 is used. This nozzle retaining portion forms a sleeve 72, which can be screwed onto the external thread 60 of the fastening section 56 of the nozzle support portion 38 by means of an internal thread. The sleeve 72 has a radially inwardly protruding collar 76 at its end away from the internal thread 74. This collar surrounds the sleeve opening 77 in the peripheral direction, and when the sleeve 72 is fitted and subsequently screwed on, the nozzle housing 66 of the flat beam nozzle 12, which is inserted into the connector 58, passes through this collar. The collar 76 of the sleeve 72 abuts against the radially inwardly pointing step 64 of the flat beam nozzle 12, thereby axially fixing the flat beam nozzle 12 to the nozzle support portion 38. This allows the flat beam nozzle 12 to rotate about the longitudinal axis 44 of the nozzle support portion 38, but it will not deviate in the axial direction.

[0044] To properly orient and lock the flat beam nozzle 12, so that the liquid jet 70 discharged from the flat beam nozzle 12 is coplanar with the jet plane 34 and can flow virtually unobstructed through the output section 30 of the through channel 18, the device 14 has an orientation and locking device 78 with a substantially U-shaped first clamping portion 80, which can be inserted into a first opening 82 of the housing 16 and has two sides 84, 86 that extend into the input section 28 of the through channel 18 and are form-fitted between the flat beam nozzle 12 within the region of the nozzle housing 66, and the two sides are integrally connected to each other via a tab 88. When the first clamping portion 80 is inserted into the first opening 82, the tab 88 is form-fitted by the first opening 82, so that the first clamping portion 80 does not move relative to the housing 16 in the axial and circumferential directions. The connecting piece 88 has two opposing locking hooks 90 and 92, which respectively engage from the rear with the edge section of the first opening 82, thereby allowing the first clamping portion 80 to be locked to the housing 16 in a releasable manner. Figure 7This can be clearly seen in the text.

[0045] Especially Figure 7 It can be clearly seen that the housing 17 has a plurality of retaining ribs 94, 95, 96, 97, 98, 99 extending into the input section 28, wherein two opposing retaining ribs 94, 97 abut against the mutually distant outer sides of the sides 84, 86, while the remaining retaining ribs 95, 96, 98 and 99 abut against the outer side of the sleeve 72.

[0046] The nozzle carrier assembly 36 is held in the input section 28 by means of retaining ribs 94 to 99, thereby forming an air delivery chamber 100 that surrounds the nozzle carrier assembly 36 in the peripheral direction and extends from the inlet opening 20 to the through channel 18.

[0047] To axially fix the nozzle carrier assembly 36 in the input section 28 of the through channel 18, the device 14 has a fixing portion that forms a substantially U-shaped second clamping portion 102 with two sides 104, 106 integrally connected to each other via a tab 108. The second clamping portion 102 can be inserted into the second opening 110 of the housing 16, wherein the tab 108 and the second opening 110 form a form-locking engagement, and the two sides 104, 106 are recessed into the annular groove 54 of the nozzle carrier portion 38, thereby fixing the nozzle carrier portion 38 together with the nozzle holding portion 40 and the flat beam nozzle 12 axially in the input section 28 of the through channel 18.

[0048] The sides 84 and 86 of the first clamping portion 80 accommodate the flat beam nozzle 12 in a form-locking manner within the area of ​​the nozzle housing 66. For this purpose, the nozzle housing 66 has two opposing truncated portions 91 and 93 on its outer side, which respectively form locking surfaces and abut against the sides 84 and 86.

[0049] The housing 16 of device 14 is formed by a first housing portion 112 and a second housing portion 114, which are respectively made of glass fiber reinforced plastic and connected to each other by material locking through infrared welding. The first housing portion 112 is constructed with a housing portion 116 surrounding the rear of the input section 28 of the through channel 18 and a bottom wall 118 of the output section 30 of the through channel 18, as well as lower side wall sections 120, 122. The second housing portion 114 is constructed with a top wall 124 of the output section 30 of the through channel 18 and upper side wall sections 126, 128. In addition, the second housing portion 114 is also constructed with an extension 130 that connects to the top wall 124 in the direction of the rear housing portion 116 and is substantially rectangular in plan view. The extension has a material thickening portion 132 at its free end and a notch 134 is constructed at intervals from the material thickening portion 132. In the region of the material thickening portion 132 and in the paired, stacked upper sidewall sections 126, 128 and lower sidewall sections 120, 122, the two shell portions 112, 114 are welded together, wherein the outer protrusion 136 of the first shell portion 112 penetrates through the notch 134. The extension 130, welded to the first shell portion 112 in the region of the material thickening portion 132, combined with the protrusion 136 penetrating through the notch 134, improves the mechanical load-bearing capacity of the welded connection between the two shell portions 112, 114.

[0050] The bottom wall 118 and top wall 124 are supported on their outer sides by a number of reinforcing ribs, wherein a longitudinally oriented reinforcing rib 138 extends along the longitudinal direction of the bottom wall 118 or top wall 124, and a number of transversely oriented reinforcing ribs 140 are oriented transversely to the longitudinally oriented reinforcing rib 138. These transversely oriented reinforcing ribs 140 have an arcuate outer profile, such that the height of the transversely oriented reinforcing ribs 140 increases continuously from their free ends toward the longitudinally oriented reinforcing rib 138. This results in a further increase in the mechanical load-bearing capacity of the housing 16 in the region of the output section 30 of the through channel 18.

[0051] As previously described, a fan-shaped, broadened liquid jet can be output using the flat beam nozzle 12. To supply pressurized liquid to the flat beam nozzle 12, the device 14 has a coupling portion 142, which is held at a second end region 48 extending from the input section 28 of the nozzle carrier portion 38 in a manner that allows rotation about the longitudinal axis 44 of the nozzle carrier portion 38 but prevents axial movement. The coupling portion 142 has a coupling sleeve 144 with internal threads 146, surrounded by a plastic sheath 148 that a user can grip to screw the coupling sleeve 144 onto a coupling portion of a complementary design to the liquid delivery line. For example, a beam fitting or spray gun can be used as the liquid delivery line, to which pressurized liquid can be supplied from a pressure cleaning device. Starting from the second end region 48 of the nozzle carrier portion 38, pressurized liquid can reach the flat beam nozzle 12 via the liquid input channel 42 and be output from the flat beam nozzle in the form of a fan-shaped, broadened liquid jet. Under the action of the liquid jet, air is drawn into the through channel 18 via the air delivery chamber 100 and the inlet opening 20. This air forms an air shroud that surrounds the liquid jet 70 and is discharged together with the liquid jet 70 through the outlet opening 24. As previously mentioned, this air shroud reduces the interaction between the liquid jet 70 and the surrounding air, particularly reducing the deceleration of the liquid jet 70 and minimizing the impact on its compactness.

[0052] To assemble the liquid dispensing device 10, in a first step, the flat beam nozzle 12 can be inserted into the connector 58 of the nozzle carrier portion 38, and then held on the nozzle carrier portion 38 in an axially immovable manner by means of the nozzle holding portion 40. Subsequently, the nozzle carrier portion 38, together with the flat beam nozzle 12 and the nozzle holding portion 40, can be inserted into the input section 38 in the axial direction through the inlet opening 20. Then, as described above, the flat beam nozzle 12 can be oriented and locked in a predetermined rotational position by means of the first clamp portion 80, and the nozzle carrier portion 38, together with the flat beam nozzle 12 and the nozzle holding portion 40, can be fixed in the input section 38 in the axial direction by means of the second clamp portion 102. Assembly of the liquid output device 10 is therefore very simple, wherein the user can replace the flat beam nozzle 12 when necessary by removing the two clamp portions 80 and 102 from the housing 16, so that the user can then pull the entire nozzle carrier assembly 36 out of the input section 28, and then unscrew the nozzle holding portion 40 from the nozzle carrier portion 38 and replace the flat beam nozzle 12.

[0053] exist Figures 9 to 16The figure schematically illustrates a second advantageous embodiment of the liquid output device according to the invention for outputting a liquid jet that is surrounded in a dome shape by an airflow and broadened in a fan shape, and generally occupies reference numeral 150. This liquid output device 150 is associated with the preceding text. Figures 1 to 8 The liquid dispensing devices 10 described above are generally similar in design. Therefore, for the same components, in Figures 9 to 16 The reference numerals used in the accompanying drawings are the same as those in the drawings. Figures 1 to 8 The same reference numerals are used in the accompanying drawings, and reference is made to these components in the foregoing description to avoid repetition.

[0054] As described above, the liquid output device 150 also has a flat jet nozzle 12 for distributing a fan-shaped broadened liquid jet 70. As a supplement to the flat jet nozzle 12, the liquid output device 150 also has a device according to a second advantageous embodiment of the invention for distributing a fan-shaped broadened liquid jet 70 enveloped by an airflow, which occupies reference numeral 154.

[0055] Device 154 has a nozzle carrier assembly 156 that also includes the nozzle carrier portion 38 as described above. The difference from the nozzle carrier assembly 36 is that the nozzle carrier assembly 156 of device 154 employs a nozzle holding portion 158 with a sleeve 160. This sleeve can be screwed to the fastening section 56 of the nozzle carrier portion 38 and has an axially upward-oriented flange 162 constructed in its end region away from the nozzle carrier portion 38. This flange can be passed through by the nozzle housing 66 of the flat beam nozzle 12 and has two opposing slit-like openings 164, 166. Immediately before the flange 162, the sleeve 160 has two opposing truncated portions 168, 170 on its outer side.

[0056] To orient and lock the flat beam nozzle 12 in a predetermined rotational position, the device 154 uses an orientation and locking device 172, which has a first clamping portion 174 and a total of four retaining ribs 176, 178, 180, 182. These retaining ribs extend into the input section 28 of the through channel 18 and are rigidly connected to the housing 16. The first clamping portion 174 is substantially U-shaped and has two sides 184, 186 interconnected via tabs 188. The two sides 184, 186 are recessed into the slit-like openings 164, 166 of the flange 162, such that the flat beam nozzle 12 is received between the sides in a form-locking manner within the region of the nozzle housing 66 of the flat beam nozzle 12, such that the two sides abut against the truncated portion 91 or 93 of the nozzle housing 66 of the flat beam nozzle 12. Figure 15This is clearly evident in the image. With the aid of the first clamping portion 174, the flat beam nozzle 12 can be connected to the sleeve 160 of the nozzle holding portion 158 in a way that prevents relative rotation. The sleeve 160 is further connected to the housing 16 in a way that prevents relative rotation via retaining ribs 176, 178, 180, 182, such that retaining ribs 176, 178 abut against the truncated portion 168, and retaining ribs 180, 182 abut against the truncated portion 170.

[0057] In addition to retaining ribs 176, 178, 180, and 182, housing 16 also has four additional retaining ribs 190, 192, 194, and 196 extending radially inward into input section 28. These additional retaining ribs are spaced apart from the cut-off portions 168 and 170 and abut against the outer side of sleeve 160, thereby supporting nozzle carrier assembly 156 in input section 28 of through channel 18, wherein nozzle carrier assembly is surrounded by air delivery chamber 100.

[0058] By referring to the above Figures 1 to 8 In a similar manner to the nozzle carrier assembly 36 of device 14, the nozzle carrier assembly 156 of device 154 can also be axially inserted into the input section 28 via the inlet opening 20, wherein the second end region 48 of the nozzle carrier portion 38 extends from the input section 28 and carries the connecting portion 142 for connecting the liquid delivery line. In device 154, the axial fastening of the nozzle carrier assembly 156 in the input section 28 of the through channel 18 is also achieved by means of the second clamping portion 102, which, as described above... Figures 1 to 8 As shown schematically, device 14 can be inserted into a second housing opening 110, wherein the second housing opening 110 is arranged offset by 90° in device 154.

[0059] With the aid of the liquid output device 150, a liquid jet that is surrounded by an airflow and is fan-shaped can be discharged in the same manner as with the liquid output device 10 described above. The orientation and locking device 172 ensures that the fan-shaped liquid jet 70 provided by the flat jet nozzle 12 is coplanarly aligned with the jet plane 34 of the output section 30 of the through channel 18.

[0060] Figures 17 to 24 The figure schematically illustrates a third advantageous embodiment of the liquid output device according to the invention for outputting a liquid jet surrounded in a dome shape and broadened in a fan shape by an airflow, and generally occupies the reference numeral 200. Liquid output device 200 is mentioned above in conjunction with the preceding text. Figures 1 to 8 and Figures 9 to 16 The liquid dispensing devices 10 and 150 are designed to be substantially the same. Therefore, for the same components, Figures 17 to 24 The reference numerals used in the accompanying drawings and Figures 1 to 16 The same reference numerals are used in the accompanying drawings, and reference is made to these components in the foregoing description to avoid repetition.

[0061] The liquid output device 200 also has a flat beam nozzle 12 for distributing a fan-shaped, broadened liquid jet 70. As a supplement to the flat beam nozzle 12, the liquid output device 200 also employs a device, generally occupies reference numeral 204, for enveloping the liquid jet 70 with an airflow, according to a third advantageous embodiment of the invention. Referring above... Figures 9 to 16 The device 204 also includes a nozzle carrier assembly 156. Furthermore, the device 204 also employs the aforementioned reference. Figures 9 to 16 The orientation and locking device 172 is described.

[0062] The difference between device 204 and devices 14 and 154 is that device 204 has a housing 206. Although the housing surrounds the through channel 18 in the same way as housing 16, the difference between housing 204 and housing 16 is that housing 206 is formed by a first housing part 208 and a second housing part 210. These housing parts respectively constitute half-shells of housing 206 and are screwed together by connecting screws 212. The first housing portion 208 has retaining ribs 180, 182 extending into the input section 28 of the through channel 18 for the orientation and locking device 172, and the second housing portion 210 has retaining ribs 176, 178 extending into the input section 28 of the through channel 18 for the orientation and locking device 172, wherein the retaining ribs 180, 182 abut against the flattened portion 170 of the sleeve 160 of the nozzle holding portion 158 of the nozzle carrier assembly 156, and the retaining ribs 176, 178 of the second housing portion 210 abut against the flattened portion 170 of the sleeve 160 of the nozzle holding portion 158 of the nozzle carrier assembly 156. Especially from... Figure 23 This can be clearly seen in the image. Additionally, the first housing portion 208 has two retaining ribs 190 and 192 that extend radially inward into the input section 28 and abut against the outer side of the sleeve 160, and the second housing portion 210 additionally has two retaining ribs 194 and 196 that extend radially inward and abut against the outer side of the sleeve 160.

[0063] The difference between this device and those 14 and 154 mentioned above is that, Figures 17 to 24 In the illustrated device 204, to axially secure the nozzle carrier assembly 156, protrusions extending into the input section 28 of the through channel 18 are used. These protrusions are recessed into the annular grooves 54 of the nozzle carrier portion 38. Protrusions 214 are arranged at the retaining ribs 180, 182 and 190, 192 of the first housing portion 208, and protrusions 216 are arranged at the retaining ribs 176, 178 and 194, 196 of the second housing portion 210. Figure 20and Figure 22 Yu Ke could see this very clearly.

[0064] To assemble the liquid dispensing device 200, in a first step, the flat beam nozzle 12 is inserted into the connector 58 of the nozzle carrier portion 38 and then held in a manner that prevents axial movement but allows rotation about the longitudinal axis 44 of the nozzle carrier portion 38 by means of the nozzle holding portion 158. In a subsequent assembly step, the flat beam nozzle 12 is oriented and locked in a predetermined rotational position by means of the first clamp portion 174 of the orientation and locking device 172. The entire nozzle carrier assembly 156 is then inserted into the first housing portion 208, wherein the protrusion 214 is recessed into the annular groove 54 of the nozzle carrier portion 38. In a further assembly step, the second housing portion 210 is fitted onto the first housing portion 208, wherein the protrusion 216 of the second housing portion 210 is also recessed into the annular groove 54 of the nozzle carrier portion 38. Finally, the two housing portions 208 and 210 are screwed together.

[0065] With the aid of the liquid output device 200, a liquid jet surrounded by an airflow and widening in a fan shape can be discharged in the same manner as with the liquid output devices 10 and 150 described above, wherein the flat jet nozzle 12 is ensured to occupy a predetermined rotation position so that the liquid jet 70 can flow through the fan-widening through channel 18 virtually unobstructed.

[0066] Figure 25 The figure schematically illustrates a fourth advantageous embodiment of the liquid output device according to the invention for outputting a liquid jet that is surrounded in a dome shape by an airflow and broadened in a fan shape, and generally occupies reference numeral 230. Liquid output device 230 is mentioned above in conjunction with the preceding text. Figures 17 to 24 The liquid dispensing devices 200 described above are generally similar in design. Therefore, for the same components, Figure 25 The reference numerals used in the accompanying drawings and Figures 17 to 24 The reference numerals used in the accompanying drawings are the same, and for these parts please refer to the foregoing description to avoid repetition.

[0067] The only difference between liquid dispensing device 230 and liquid dispensing device 200 is that they employ the same reference as described above. Figures 1 to 8 and Figures 9 to 16 The second clamping portion 102 is used to axially and upwardly fix the nozzle carrier assembly 156 in the housing 206. For this purpose, the second housing portion 210 of the liquid dispensing device 230 has a housing opening 232 into which the clamping portion 102 can be inserted, and the housing opening receives the tab 108 of the clamping portion 102 in a form-locking manner.

[0068] With the aid of liquid output device 230, a liquid jet surrounded by an airflow and widened in a fan shape can be discharged in the same manner as with liquid output devices 10, 150 and 200.

[0069] Figure 26 The fifth preferred embodiment of the liquid dispensing device according to the present invention is schematically illustrated, and is generally represented by reference numeral 250. The liquid dispensing device 250 is substantially the same in design as the liquid dispensing device 230 described above. To avoid repetition, Figure 26 The reference numerals used in the accompanying drawings and Figure 25 The same reference numerals are used in the accompanying drawings, and reference is made to these components in the foregoing description to avoid repetition.

[0070] Liquid output device 250 and Figure 25 The difference in the liquid dispensing device 230 shown is only that it uses a housing 252, which has a first housing portion 254 and a second housing portion 256 that can be screwed together. These two housing portions 254 and 256 form housing half-shells that are not mirror images of each other; rather, the first housing portion 254 is similar to... Figures 1 to 8 The first housing portion 112 of the housing 16 of the liquid output device 10 shown, in addition to the bottom wall 258 and lower side wall portions 260 and 262 of the output section 30, also includes a rear housing portion 264. This rear housing portion is sleeve-shaped and has a housing opening 232 into which the clamp portion 102 can be inserted to axially fix the nozzle carrier assembly 156. The second housing portion 256 includes the top wall 266 of the output section 30, upper side wall portions 268 and 270, and the top wall portion 272 at the front of the input section 28 of the through channel 18. From Figure 26 This can be clearly seen directly in the text.

[0071] To assemble the liquid dispensing device 250, after the flat beam nozzle 12 is fitted onto the connector 58 of the nozzle carrier portion 38 and secured to the nozzle carrier portion 38 in an axially immobile manner by means of the nozzle holding portion 158 and locked in a predetermined rotational position by means of the clamp portion 174, the nozzle carrier assembly 156 is inserted into the rear housing section 264 of the first housing portion 254 and subsequently held axially upward in the rear housing section 264 by means of the clamp portion 102. The second housing portion 256 can then be fitted onto the first housing portion 254, and the two housing portions 254, 256 are screwed together.

[0072] With the aid of liquid output device 250, a liquid jet surrounded by an airflow and widened in a fan shape can be discharged in the same manner as with the liquid output devices 10, 150, 200 and 230 described above.

Claims

1. A device for enveloping a fan-shaped liquid jet (70) with an airflow, wherein, The device (14; 154; 204) has a housing (16; 206; 252) surrounding a through channel (18), wherein the through channel (18) has an input section (28) with an inlet opening (20) and an output section (30) connected to the input section (28), wherein the output section (30) extends to an outlet opening (24) and fan-spans in the beam plane (34) as it approaches the outlet opening (24), and wherein the device (14; 154; 204) has a nozzle carrier assembly (36; 156) recessed into the input section (28) and surrounded by an air delivery chamber (100), wherein the The nozzle carrier assembly (36; 156) has a nozzle carrier portion (40) constituting a liquid input channel (42) and having a first end region (46) facing the output section (30) of the through channel (18), and a flat beam nozzle (12) for dispensing a liquid jet (70) is releasably fitted at the first end region. The device (14; 154; 204) has an orientation and locking device (78; 172) for oriented and locking the flat beam nozzle (12) relative to the jet plane (34) of the output section (30) of the through channel (18) at a predetermined rotational position.

2. The device according to claim 1, characterized in that, The nozzle carrier assembly (36; 156) has a nozzle holding portion (40; 158) that can be releasably connected to the nozzle carrier portion (38), wherein the nozzle holding portion (40; 158) is configured such that the flat beam nozzle (12) is held at a first end region (46) of the nozzle carrier portion (38) in such a way that it is axially immovable but rotatable about the longitudinal axis (44) of the nozzle carrier portion (38).

3. The device according to claim 1 or 2, characterized in that, The nozzle carrier portion (38) has a plug element (58) constructed at its first end region (46), and the flat beam nozzle (12) can be connected to the plug element in a pluggable and detachable manner.

4. The device according to claim 2 or 3, characterized in that, The orientation and locking device (78) has a first clamping portion (80) that is U-shaped or substantially U-shaped, having two sides (84, 86) connected to each other via tabs (88), wherein the first clamping portion (80) is insertable into a first opening (82) of the housing (16; 252), the first opening receiving the tabs (88) in a form-locking manner, wherein the sides (84, 86) extend into the input section (28) of the through channel (18) and are configured to receive the flat beam nozzle (12) therebetween in a form-locking manner.

5. The device according to claim 4, characterized in that, The two sides (84, 86) are respectively supported on their outer sides away from the flat beam nozzle (12) by at least one retaining rib (94; 97) in the input section (28) of the housing (16) extending into the through channel (18).

6. The device according to claim 4 or 5, characterized in that, The first clamp portion (80) can be locked to the housing (16) in a releaseable manner.

7. The device according to claim 2 or 3, characterized in that, The orientation and locking device (172) has at least two retaining ribs (176, 178, 180, 182) rigidly connected to the housing (16) and extending into the input section (28) of the through channel (18), and a U-shaped or substantially U-shaped clamping portion (174) having two sides (184, 186) interconnected via tabs (188), and the nozzle retaining portion (158) has a sleeve (160) releasably connected to the nozzle carrying portion (38) and having a flange (162) formed at its end region away from the nozzle carrying portion (38), the flange being releasable by the A flat beam nozzle (12) passes through and has two opposing openings (164, 166), the sides (184, 186) of the clamp portion (174) sinking into the openings respectively, wherein the sides (184, 186) are configured to receive the flat beam nozzle (12) between them in a form-locking manner, and wherein the sleeve (160) has two opposing truncated portions (168, 170) on its outer side, on which at least one retaining rib (176, 178; 180, 182) of the orientation and locking device (172) extending into the input section (28) of the through channel (18) can be disposed respectively.

8. The device according to claim 7, characterized in that, Two retaining ribs (176, 178; 180, 182) of the orientation and locking device (172) can be respectively arranged at intervals on the flat portion (168, 170) of the sleeve (160).

9. The device according to claim 7 or 8, characterized in that, At least one retaining rib of the housing (16) extending into the input section (28) of the through channel (18) can be disposed on the tab (188) of the first clamping portion (174).

10. The device according to any one of the preceding claims, characterized in that, The housing (16; 206; 252) has a first housing portion (112; 208; 254) and a second housing portion (114; 210; 256), wherein the two housing portions (112, 114; 208, 210; 254, 256) are connected to each other by means of material locking, form locking and / or force locking.

11. The device according to claim 10, characterized in that, The two shell parts (112, 114; 208, 210; 254, 256) are screwed or welded together.

12. The device according to any one of the preceding claims, characterized in that, The area of ​​the nozzle support assembly (36; 156) that is submerged in the input section (28) of the through channel (18) can be inserted into the input section (28) in the axial direction and fixed in the axial direction by means of the fixing part (102).

13. The device according to claim 12, characterized in that, The retaining portion (102) can be inserted into the opening (110) of the housing, wherein the retaining portion (102) and the opening (110) form a shape-locking fit, and have at least one retaining arm recessed into an annular groove (54) arranged on the outside of the nozzle bearing portion (18).

14. The device according to claim 13, characterized in that, The fixing portion (102) forms a U-shaped or substantially U-shaped clamp portion (102) having two sides (104, 106) connected to each other via tabs (108), the sides forming retaining arms recessed into the annular groove (54), wherein the opening (110) of the housing receives the tabs (108) in a form-locking manner.

15. The device according to claim 10 or 11, characterized in that, The two housing portions (208, 210) have protrusions (214, 216) extending into the input section (28) of the through channel (18), the protrusions being recessed into an annular groove (54) arranged on the outside of the nozzle carrier portion (38).

16. The device according to any one of the preceding claims, characterized in that, The nozzle carrier assembly (36) has a connecting portion (142) for connecting a liquid delivery line, wherein the connecting portion (142) is located at a second end region (48) of the nozzle carrier assembly (38) away from the output section (30) of the through channel (18).

17. The device according to claim 16, characterized in that, The second end region (48) of the nozzle bearing portion (38) extends from the input section (28) of the through channel (18).

18. The device according to claim 16 or 17, characterized in that, The connecting portion (142) is held at the second end region (48) of the nozzle carrier portion (38) in such a way that it cannot move axially but can rotate about the longitudinal axis (44) of the nozzle carrier portion (38).

19. A liquid output device for outputting a liquid jet (70) surrounded by an airflow in a dome shape and widened in a fan shape, the liquid output device having a device (14; 154; 204) according to any one of the preceding claims and a flat jet nozzle (12) that can be releasably fitted at a first end region (46) of a nozzle carrier portion (38).

20. The liquid dispensing device according to claim 19, characterized in that, The flat beam nozzle (12) can be connected to the first end region (46) of the nozzle carrier portion (38) in a pluggable and releasable manner.

21. The liquid dispensing device according to claim 19 or 20, characterized in that, The flat beam nozzle (12) has a nozzle housing (66) with two opposing truncated portions (91, 93) for form-locking with the clamp portion (80; 174) of the orientation and locking device (78; 172).

Images