INJECTOR FOR A TEXTILE PROCESSING MACHINE

Abstract

An injector for a textile processing machine for the manufacture of fleece material. A pressurized medium is introduced to an inflow chamber (13) provided inside an injector body (11) via several channels (23) in fluid communication with a pressure distribution chamber (18). The communicating channels (23) are cylindrical bores provided in the injector body (11) and arranged in one or two rows so as to be offset relative to the longitudinal center plane (39) of the inflow chamber (13). The pressure distribution chamber (18) adjoining the communicating channels (23) comprises a first wall section (45) forming a first deflecting surface (46) extending, at least in sections, diagonally or transversely with respect to the longitudinal axis (26) of the communicating channels (23). The medium flowing from the communicating channels (23) is deflected by the first deflecting surface (46), so that said medium changes direction before reaching the downstream nozzle openings (37). Consequently, a direct straight flow to the nozzle openings (37) from the inflow chamber (13) is not possible. Through the nozzle openings (37), water jets (38) are formed that are ejected by the injector (10) via an exit opening (30.

Description

CROSS-REFERENCE TO RELATED APPLICATION

The present application claims the priority of European Patent Application No. 09 012 009.8, filed Sep. 22, 2009, the subject matter of which, in its entirety, is incorporated herein by reference.

BACKGROUND OF THE INVENTION

The invention relates to an injector for a textile processing machine. The injector comprises an inflow chamber that is in fluid communication or can be in fluid communication with a pressure source. The pressurized fluid or gaseous medium, preferably water, of the inflow chamber is further conveyed to a pressure distribution chamber via at least one communicating channel and, in particular, via several communicating channels. The pressure distribution chamber is in fluid communication with an exit opening. Between the pressure distribution chamber and the exit opening, there is a receptacle for a strip-shaped nozzle foil, for a nozzle strip. The nozzle foil has a plurality of nozzle openings which, with the nozzle foil installed in said receptacle, provide fluid communication between the pressure distribution chamber and the exit opening. The nozzle openings are disposed to form fine, needle-like jets of the medium, whereby said jets can be ejected through the exit opening by the injector. With the help of the jets, a random fiber non-woven is compacted to produce a fleece material. When in use, a water jet compacting system may comprise several injectors arranged either successively in series or radially around a drum. The series arrangement involves a web abutment; the arrangement around a drum involves a drum abutment. It is also possible to combine the drum abutment and the web abutment in one water jet compacting system.

It has been found that jets—in particular water jets—of varying quality may be formed, depending on the inflow conditions of the nozzle openings in the pressure distribution chamber. If the flow to the nozzle opening through the communicating channel and the pressure distribution chamber is straight, the resultant water jet is more compact and more stable in view of its needle-like form. Different therefrom, nozzle openings over which turbulent currents form in the pressure distribution chamber produce more diffuse water jets. These differences between the water jets result in different densities in the random fiber non-woven, so that it is not possible to produce a fleece material displaying uniform strength and density.

In order to eliminate this problem, DE 600 11 900 T2 suggests that the communicating channel be configured as a slit channel, in which case the flow to the nozzle openings in alignment with the slit channel can be both straight and direct, and essentially turbulence-free. In order to ensure this, the flow conditions in the region of the input orifice of the slit channel must be equalized along the length of the slit channel; to accomplish this, a perforated tube is arranged in the inflow chamber, said tube being disposed to distribute—in the inflow chamber—the water supplied by the pressure source.

An injector has been known from DE 10 2005 055 939 B3, said injector comprising an impact element in the form of a cylinder in the pressure distribution chamber below the output orifices of the communicating channels in order to avoid a direct flow to some of the nozzle openings. In doing so, the water flowing out of the communicating channels first impinges on the impact element and flows around said element before reaching the nozzle openings.

Considering this, the object of the present invention may be viewed as providing an injector that does not require additional flow-conveying components in the inflow chamber or in the pressure distribution chamber and still ensures a uniform water jet formation.

SUMMARY OF THE INVENTION

The above object generally is achieved with an injector in accordance with the invention wherein the flow path of the medium between the inflow chamber and the nozzle openings is defined by the at least one communicating channel, as well as by the pressure distribution chamber. Considering the injector in accordance with the invention, this flow path is prespecified by the course of the communicating channel and/or the pressure distribution chamber in that said flow path contains at least one deflecting site that is represented by a section of the communicating channel and/or of the pressure distribution channel. A deflecting site comprises the entire surface of a region, i.e., a wall section of the communicating channel and/or of the pressure distribution chamber. At this first deflecting site, the direction of flow of the medium, preferably of the water, is changed before said medium reaches the nozzle openings of the nozzle strip or nozzle foil. In this manner, it is ensured that a straight, direct flow of the medium flowing out of the inflow chamber is not possible at any of the nozzle openings. The flow conditions at the nozzle openings are equalized, thereby avoiding difference between the jets that lead to differences with regard to the quality and the density of the produced fleece material. It is not necessary to arrange flow-influencing components in the inflow chamber or in the pressure distribution chamber. Consequently, the two chambers may have smaller dimensions, so that the wall surface of the chambers is smaller. The pressure of the medium acting on a smaller wall surface reduces the deformation force exerted on the injector, so that the wall thicknesses of the injector may be reduced. This makes it possible for the exterior shape of the injector to be adapted to the changed requirements. Consequently, it is possible, for example, for the injector to have a conical exterior form. In this case, it has a smaller width in the region of the nozzle openings than in the region of the inflow chamber. With a radial arrangement of several injectors around a vacuum drum this enables an arrangement of the injectors more closely next to each other than in the case of a rectangular embodiment of the injector. Furthermore, this also facilitates the maintenance of the injector, for example, when cleaning the chambers that do not contain any components.

Advantageously, the communicating channel between the input orifice in the inflow chamber and the output orifice in the pressure distribution chamber enables a straight flow. For example, the communicating channel may consist of a cylindrical bore. As a result of this, it is possible to easily create the at least one communicating channel. In particular, several communicating channels are provided at regular distances in longitudinal direction between the inflow chamber and the pressure distribution chamber.

Preferably, the communicating channel or the communicating channels extend outside a longitudinal center plane extending in longitudinal direction centrally through the output orifice and—with the nozzle foil installed in the injector—through the nozzle foil. The communicating channel or channels do not intersect this longitudinal center plane. Considering this arrangement of the communicating channel, the input orifice of said communicating channel, viewed in section, represents a radius.

If several communicating channels are provided, at least one of the communicating channels may be arranged at a distance from the longitudinal center plane on both sides of the longitudinal center plane through the exit opening. In other words: the longitudinal center plane through the exit opening divides the injector into two parts, whereby at least one communicating channel is provided in both parts. In this manner, water can flow from different and, for example, opposite directions into the pressure distribution chamber. The streams of water conveyed in from different communicating channels and displaying different inflow directions can either be directly pointed at each other or be introduced, in longitudinal direction offset with respect to each other, into the pressure distribution chamber. Both measures are suitable to produce highly uniform flow conditions in the pressure distribution chamber in the transition region to the exit opening, where the nozzle openings are located when the nozzle foil is in use. If several communicating channels are provided on one side of the longitudinal center plane of the exit opening, these may be at different distances from the longitudinal center plane.

Considering a preferred embodiment, the first deflecting site in the flow path in the pressure distribution chamber is provided downstream of the output orifice. The first deflecting site, said deflecting site comprising the entire surface of a first wall section of the pressure distribution chamber, comprises a first deflecting surface. This first deflecting surface, said surface extending diagonally or transversely with respect to the outflow direction of the water exiting through the output orifice and thus representing the first resistance in the course of the flow and affecting the flow direction, and a second deflecting surface, said surface being arranged radially with respect to the flow direction opposite the first deflecting surface, thus represent the first deflecting site. Preferably, the first deflecting surface consists of a first wall section of the pressure distribution chamber.

Downstream of the first deflecting site in the flow path of the water, it is possible to provide and additional, second deflecting site that is located, in particular, in the pressure distribution chamber and, considering a simple embodiment, is preferably formed by a wall section of the pressure distribution chamber. Likewise, this second deflecting site comprises the entire surface of the wall section associated therewith. The water reaches the nozzle openings of the nozzle strip only after flowing through the two deflecting sites.

The deflecting surfaces may have one or several plane surface sections. It is also possible to configure the deflecting surfaces so as to be curved, for example, concave or convex. Preferably, the deflecting surfaces are without edges.

The inflow chamber and the at least one communicating channel may be provided in an injector body. In doing so, the injector body is preferably connected to an injector base having an exit opening. In a preferred embodiment of the injector, the injector body as well as the injector base delimit the pressure distribution chamber, said chamber thus being formed by a space between the injector body and injector base. Such an embodiment allows a simple formation of the pressure distribution chamber. In doing so, the first deflecting surface of the first deflecting site may be provided on the injector base. The second deflecting surface of the first deflecting site may be provided on the injector body. Therefore, the two deflecting surfaces can be very easily produced during the manufacture of the injector base or the injector body. In this exemplary embodiment, the first deflecting surface of the second deflecting site can be provided on the injector body, and the second deflecting surface of the second deflecting site may be provided on the injector base. Furthermore, considering another exemplary embodiment, it is possible to provide the first deflecting surface of the first deflecting site on the injector body and to provide the second deflecting surface of the first deflecting site on the injector base.

In special applications, it is possible to arrange the communicating channel at an angle not equal to 90° relative to the longitudinal center plane of the inflow chamber. Then, it is possible to arrange the input orifice of the communicating channel on one side of the longitudinal center plane and the output orifice of the communicating channel on the other side of the longitudinal center plane. It is also possible for the longitudinal center axis of the communicating channel to intersect the longitudinal center plane of the inflow chamber in the region of the input orifice, and for the output orifice of the communicating channel to be arranged at a distance from the longitudinal center plane of the inflow chamber. In the case of such an arrangement, the input orifice has an elliptical circumference that can be of advantage from the viewpoint of flow technology.

Advantageous embodiments and additional features of the invention are obvious from the dependent patent claims and the description. The drawings are to be used for supplementary reference. Hereinafter, exemplary embodiments of the invention are explained in detail with reference to the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic longitudinal section of a first exemplary embodiment of an injector, along section line I-I in FIG. 2a.

FIG. 2a is a cross-section of the injector of FIG. 1, along section line II-II in FIG. 1.

FIG. 2b is a schematic cross-sectional representation of the first deflecting site of FIG. 2a.

FIG. 3 is a schematic cross-sectional representation of a modification of the exemplary embodiment of the injector in accordance with FIGS. 1, 2a and 2b.

FIG. 4 is a schematic cross-sectional representation of another exemplary embodiment of an injector comprising two rows of communicating channels extending in longitudinal direction.

FIG. 5 is a schematic cross-sectional representation of a modification of the exemplary embodiment of the injector in accordance with FIG. 4.

FIG. 6 is a longitudinal section of a detail of the inflow chamber of an exemplary embodiment comprising two rows of communicating channels, along section line III-III in FIG. 4 or 5.

FIG. 7 shows a modification of the arrangement of the two rows of communicating channels in accordance with the view of FIG. 6.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a first exemplary embodiment of an injector 10 of a textile processing machine that is used for the production of fleece materials. The injector 10 comprises an injector body 11 and an injector base 12 that are connected to each other. Inside the injector body 11 is an inflow chamber 13 that communicates with a pressure source 15 via an inflow opening 14. In the exemplary embodiment, the inflow chamber 13 has the shape of a cylinder. The inflow opening 14 is a bore provided coaxially with respect to the longitudinal axis of the inflow chamber 13. On the longitudinal end side opposite the inflow opening 14, the inflow chamber 13 is closed in a fluid-tight manner by a screwed-in cap 16 of the injector body 11. To do so, a ring seal 17 may be provided between the cap 16 and the seat of the cap.

Furthermore, the injector 10 comprises a pressure distribution chamber 18 that extends in a longitudinal direction L in the region between the injector body 11 and the injector base 12. Consequently, the pressure distribution chamber 18 is made up of the injector body 11 and the injector base 12 together. To do so, the injector base 12 has a recess 19 that is open toward the injector body 11. Correspondingly, a recess 20 open toward the injector base 12 is provided in the injector body 11. After connecting the injector body 11 and the injector base 12, the two recesses 19, 20 together form the pressure distribution chamber 18. In order to create fluid-tightness between the injector body 11 and the injector base 12, it is possible to provide one or more sealing devices that are not specifically shown in the drawing.

The inflow chamber 13 and the pressure distribution chamber 18 are in fluid communication with the help of a plurality of communicating channels 23. The communicating channels 23 extend between an input orifice 24 in the inflow chamber 13 and an output orifice 25 in the pressure distribution chamber 18. In the preferred exemplary embodiment, the communicating channels 23 are represented by cylindrical bores in the injector body 11. The longitudinal axes 26 of the communicating channels 23 essentially extend at a right angle relative to longitudinal direction L of the injector 10. Consequently, the output orifice 25 is in the recess 20 that forms the part of the pressure chamber 18 that is delimited by the injector body 11.

An exit opening 30 is provided on the injector base 12. Said exit opening extends in longitudinal direction L and is in fluid communication with the pressure distribution chamber 18. Adjoining the pressure distribution chamber 18, the exit opening 30 has a slit-shaped section 31 that is adjoined by a conical section 32. When viewed in cross-section in accordance with FIG. 2a, the exit opening 30 has an overall funnel-shaped form. The side of the injector base 12 facing away from the injector body 11 forms an exit side 33 of the injector 10. The conical section 32 of the exit opening 30 is open toward the exit side 33. A longitudinal center plane 34 divides the exit opening 30 in the center. In the preferred exemplary embodiment, the exit opening 30 is symmetrical with respect to the longitudinal center plane 34.

A receptacle 35 for a nozzle foil 36 is provided in the transition region between the pressure distribution chamber 18 and the exit opening 30. The nozzle foil 36 has a plurality of nozzle openings 37 that are arranged, in particular, at regular intervals in longitudinal direction L. One or also more rows of nozzle openings 37 may be arranged next to each other in the nozzle strip 36 in longitudinal direction L. The nozzle openings 37 completely extend through the nozzle foil 36. With the nozzle foil 36 inserted in the receptacle 35, the nozzle openings 37 are located between the pressure distribution chamber 18 and the exit opening 30. The pressurized medium made available in the pressure distribution chamber 18—for example water in the exemplary embodiment—flows through the nozzle openings 37 and is thus transformed into fine, needle-like jets 38, i.e. water jets, as is schematically shown in dotted lines in FIG. 1. The receptacle 35 comprises a seat for the nozzle foil 36, said seat accommodating a ring-shaped seal 29 in order to prevent the stream from flowing around the nozzle foil. Consequently, the water is forced to flow through the nozzle openings 37.

The communicating channels 23 in accordance with the example extend completely outside the longitudinal center plane 34 of the exit opening 30. The longitudinal axes 26 of the communicating channels 23 extend parallel to the longitudinal center plane 34 through the exit opening 30 at a distance with respect thereto. Referring to the preferred exemplary embodiments of the injector 10 described here, the input orifices 24 are positioned so as to be laterally offset in a direction transverse with respect to longitudinal direction L relative to a longitudinal center plane 39 through the inflow chamber 13 (FIG. 2a).

Between the input orifice 24 and the exit opening 30, the communicating channel 23 and the pressure distribution chamber 18 define a flow path 40 for the water flowing between the inflow chamber 13 and the exit opening 30. This flow path 40 comprises a first deflecting site 41 where the flow direction of the water is changed. This prevents that a straight flow path is possible between the input orifice 24 and the exit opening 30.

The first deflecting site 41 is represented by a first wall section 45 of the pressure distribution chamber 18 that comprises a first deflecting surface 46 and a second deflecting surface 61. This first deflecting surface 46 is located downstream opposite the output orifice 25 and extends, at least in sections, diagonally or transversely with respect to the flow direction of the medium flowing out of the output orifice 25. The deflecting surface 46 is arranged on the outside of the communicating channel 23. In the exemplary embodiment, the first deflecting surface 46 is provided in the injector base 12 and thus represents one wall section of the recess 19 provided in the injector base 12. The first deflecting surface 46 extends in longitudinal direction L along the pressure distribution chamber 18. Said latter deflecting surface is curved about an axis extending in longitudinal direction L so as to be concave. The radius of curvature may be determined as a function of the spatial conditions of the injector 10. The second deflecting surface 61 of the first deflecting site 41 is arranged—in flow direction—so as to be radially opposite the first deflecting surface 45. This second deflecting surface 61 is configured so as to represent a straight, plane surface that is arranged at an acute angle relative to the longitudinal axis 26 of the communicating channel 23 and to extend in longitudinal direction L along the pressure distribution chamber 18. The flow direction of the medium is defined by the interaction of the first deflecting surface 46 and the second deflecting surface 61.

As an alternative to the illustrated exemplary embodiments it is also possible for the first deflecting surface 46 to have one or more plane surface sections or to be formed by one of more plane surface sections. The second deflecting surface 61 may be curved so as to be concave or convex, for example. Preferably, the two deflecting surfaces 46, 61 do not have edges.

The first deflecting site 41 is located in the axial extension of the communicating channels 23. The longitudinal axes 26 of the communicating channels 23 intersect the first deflecting surface 46 of the first wall section 45 of the first deflecting site 41. The first deflecting surface 46 is not formed by an additional component but is created when the pressure distribution chamber 18 is formed. The injector consists only of the injector body 11 and injector base 12. An additional, separate component that has the deflecting surface 46 is not necessary.

Downstream of the first deflecting site 41, for example, the flow path 40 has a second deflecting site 49. The second deflecting site 49 is represented by a second wall section 50 of the pressure distribution chamber 18, said wall section comprising a first deflecting surface 51 and a second deflecting surface 62. The first deflecting surface 51 of the second deflecting site 49 is located on the injector body 11. Said first deflecting surface is part of the recess 20 provided in the injector body 11. In the exemplary embodiments described here, the first deflecting surface 51 is curved so as to be concave and extends in longitudinal direction L of the pressure distribution chamber 18. The first deflecting surface 51 is laterally offset relative to the first deflecting surface 46 of the first deflecting site 41. The longitudinal center plane 34 through the exit opening 30 may intersect the first deflecting surface 51. In the embodiments illustrated here, the first deflecting surface 51 directly adjoins the longitudinal center plane 34. The second deflecting surface 62 of the second deflecting site 49 is provided on the injector base 12 and is part of the recess 19 on the injector base 12. The second deflecting surface 62 is represented by a straight, plane surface and extends along longitudinal direction L of the pressure distribution chamber 18. The first and the second deflecting surfaces 51, 62 are arranged above the receptacle 35 for the nozzle strip 36. The flow direction of the medium is determined by the interaction of the first deflecting surface 51 and the second deflecting surface 62.

Both first deflecting surfaces 46, 51 have the form of a groove extending in longitudinal direction L.

The water flow along the flow path 40 thus is initially straight through the communicating channel 23 up to the first deflecting site 41. There, the flow is laterally deflected in a direction transverse to the longitudinal axis 26 of the communicating channel 23 and in a direction transverse to longitudinal direction L. Farther downstream, there is the second deflecting site 49 that deflects the water in the direction of the exit opening 30 toward the nozzle strip 36; as a result of this, following the second deflecting site 49, a flow direction is attained that extends approximately parallel to the exit opening of the water jets 38 or parallel to the longitudinal center plane 34 through the exit opening 30. Consequently, the flow path 40 is essentially stepped.

Irregularities 52 may be arranged so as to be, in particular, regularly distributed in the flow path 40 on the walls or wall sections of the communicating channels 23 and/or of the pressure distribution chamber 18. Such irregularities 52 may be concave recesses and/or raised beads. Preferably, such irregularities 52 are provided at least on the wall sections of the pressure distribution chamber 18, in particular on one or more of the deflecting surfaces 46, 61, 51, 62, as is schematically shown in FIG. 2b with reference to the example of the first deflecting site 41.

FIG. 3 shows an exemplary embodiment of the injector 10, said embodiment having been modified compared with FIGS. 1 and 2. The essential difference is that the longitudinal center plane 39 through the inflow chamber 13 forms a common plane with the longitudinal center plane 34 through the exit opening 30. Consequently, the exit opening 30 is arranged so as to be centered relative to the inflow chamber 13. Other than that, reference is made to the description of the first exemplary embodiment in accordance with FIGS. 1 and 2.

FIG. 4 shows another exemplary embodiment of the injector 10. Different from the previous embodiments, the communicating channels 23 in this case are not arranged in a row in longitudinal direction L but in two spaced-apart rows 55 (FIGS. 6 and 7). Both rows 55 are at a lateral distance from the longitudinal center plane 39 through the inflow chamber 13, so that the longitudinal axes 26 of the communicating channels 23 extend parallel to and at a distance from the longitudinal center plane 39. In doing so, the longitudinal center plane 39 through the inflow chamber 13 divides the injector body 11 into two parts, whereby each of the two parts has a row 55 of communicating channels 23. Therefore, the communicating channels 23 are arranged on both sides of the longitudinal center plane 39 through the inflow chamber 13.

In doing so, the flow path 40 through one of the communicating channels 23 into the pressure distribution chamber 18 takes the previously described course. Also in this case, adjoining each communicating channel 23 in the pressure distribution chamber 18, there is a first deflecting site 41 as well as a second deflecting site 49, so that the water flowing into the pressure distribution chamber 18 is deflected twice along each flow path 40 before reaching the nozzle strip 36 or the exit opening 30. Regarding this, reference may be made to the above description. Considering the two-row arrangement of the communicating channels 23, there is a confluence of the streams from the first row 55 meet the streams from the other row 55 in the pressure distribution chamber 18. The flow directions of the water inflowing from the first row 55 is different from the flow direction of the water inflowing from the other row 55.

As is schematically shown in FIGS. 6 and 7, the two rows 55 of communicating channels 23 may be arranged symmetrically with respect to the longitudinal center plane 39 of the inflow chamber 13. In doing so, the communicating channels 23 are arranged in pairs, so that one communicating channel 23 of one pair 56 is arranged on one side of the longitudinal center plane 39 and the respectively other communicating channel 23 of this pair 56 is arranged on the other side of the longitudinal center plane 39 (FIG. 6). Considering this symmetrical arrangement in pairs, it is possible to have the two streams of water of one pair 56 of the communicating channels 23 intersect in the pressure distribution center 18 or to direct said streams against each other, thus achieving good mixing of the water.

FIG. 7 shows an alternative option of arranging the two rows 55 of communication channels 23. Different from the embodiment option in accordance with FIG. 6, the two rows 55 are offset relative to each other, viewed in longitudinal direction L. The streams entering into the pressure distribution chamber 18 through the two rows 55 of communicating channels 23 do not intersect in a common plane extending at a right angle with respect to longitudinal direction L. The water streams flow offset in longitudinal direction L into the pressure distribution chamber 18. As a result of this, the water of the individual streams may expand well in a direction transverse to the respective flow direction in the pressure distribution chamber 18.

Referring to the exemplary embodiments in accordance with FIGS. 1 through 4 of the injector 10, the receptacle 35 for the nozzle strip 36 has slit-like recesses 60 on both longitudinal sides, so that both longitudinal sides of the inserted nozzle foil 36 come into engagement with the recess 60. In order to install the nozzle foil 36, said foil may be slid in longitudinal direction L into the injector 10. In the exemplary embodiment in accordance with FIG. 5, there are no such recesses 60. The receptacle 35 is formed by a groove having a rectangular cross-section. Holding means or clamping means for pressing the nozzle foil 36 against the seal 29 may be provided, but are not specifically shown in the drawings.

The invention relates to an injector for a textile processing machine for the manufacture of fleece material. An inflow chamber 13 is provided inside an injector body 11, in which case a pressurized medium is made available in said inflow chamber. By way of several communicating channels 23, said inflow chamber is in fluid communication with a pressure distribution chamber 18. The communicating channels 23 are represented by cylindrical bores that are provided in the injector body 11. The communicating channels 23 are arranged in one or two rows so as to be offset relative to the longitudinal center plane 39 of the inflow chamber 13. The pressure distribution chamber 18 adjoining the communicating channels 23 comprises a first wall section 45 that forms a first deflecting surface 46. This deflecting surface 46 extends—at least in sections—diagonally or transversely with respect to the longitudinal axis 26 of the communicating channels 23. The medium flowing out of the communicating channels 23 is deflected by means of the first deflecting surface 46, so that said medium changes its direction before reaching the downstream nozzle openings 37 of a nozzle strip 36. Consequently, a direct straight flow to the nozzle openings 37 from the inflow chamber 13 is not possible. Through the nozzle openings 37, water jets 38 are formed, said water jets being ejected by the injector 10 via an exit opening 30.

It will be appreciated that the above description of the present invention is susceptible to various modifications, changes and modifications, and the same are intended to be comprehended within the meaning and range of equivalents of the appended claims.

LIST OF REFERENCE NUMERALS:

• 10 Injector
• 11 Injector body
• 12 Injector base
• 13 Inflow chamber
• 14 Inflow opening
• 15 Pressure source
• 16 Cap
• 17 Ring seal
• 18 Pressure distribution chamber
• 19 Recess in 12
• 20 Recess in 11
• 23 Communicating channel
• 24 Input orifice
• 25 Output orifice
• 26 Longitudinal axis of 23
• 29 Ring-shaped seal
• 30 Exit opening
• 31 Slit-shaped section
• 32 Conical section
• 33 Exit side
• 34 Longitudinal center plane of 30
• 35 Receptacle
• 36 Nozzle strip, nozzle foil
• 37 Nozzle opening
• 38 Jet, water jet
• 39 Longitudinal plane of 13
• 40 Flow path
• 41 First deflecting site
• 45 First wall section of 18
• 46 First deflecting surface of 41
• 49 Second deflecting site
• 50 Second wall section of 18
• 51 First deflecting surface of 49
• 52 Irregularities
• 55 Row of communicating channels
• 56 Pair of communicating channels
• 60 Recess
• 61 Second deflecting surface of 41
• 62 Second deflecting surface of 49

Claims

1. Injector for a textile processing machine, said injector comprising:

an inflow chamber (13) connected to a pressure source (15),

at least one communicating channel (23) terminating in the inflow chamber (13) at an input orifice (24) and in a pressure distribution chamber (18) at an output orifice (25),

an exit opening (30) in fluid communication with the pressure distribution chamber (18),

a receptacle (35) for a nozzle foil (36) having a plurality of nozzle openings (37) for the formation of jets (38), in which case the nozzle foil (36) inserted in the receptacle forms jets (38) that are dispensed through the exit opening (30) of the injector (20,

wherein the flow path (40) between the inflow chamber (13) and the exit opening (30) prespecified by the communicating channel (23) and the pressure distribution chamber (18) comprises at least one deflecting site (41) where the water flowing through changes its flow direction.

2. Injector as in claim 1, characterized in that the at least one communicating channel (23) represents a bore that is cylindrical, in particular.

3. Injector as in claim 1, characterized in that the at least one communicating channel (23) extends outside the longitudinal center plane (34) of the exit opening (30).

4. Injector as in claim 1, characterized in that several communicating channels (23) are provided, whereby at least one of the communicating channels (23) is arranged at a distance from the longitudinal center plane (34) on each side of the longitudinal center plane (34) through the exit opening (30).

5. Injector as in claim 1, characterized in that, downstream of the output orifice (25) in the pressure distribution chamber (18), a first deflecting surface (46) is provided at the first deflecting site (41), said first deflecting surface being arranged diagonally or transversely with respect to the outflow direction of the medium flowing out of the output orifice (25).

6. Injector as in claim 5, characterized in that the first deflecting surface (46) is formed on a first wall section (45) of the pressure distribution chamber (18).

7. Injector as in claim 5, characterized in that the first deflecting surface (46) has a curvature that determines the deflecting direction of the flow.

8. Injector as in claim 1, characterized in that, downstream of the first deflecting site (41) in the flow path (40), another, second deflecting site (49) is provided, said second deflecting site being located in the pressure distribution chamber (18).

9. Injector as in claim 1, characterized in that the inflow chamber (13) and the at least one communicating channel (23) are provided in an injector body (11).

10. Injector as in claim 9, characterized in that an injector base (12) having the exit opening (30) is connected with the injector body (11).

11. Injector as in claim 10, characterized in that the pressure distribution chamber(18) is delimited by the injector body (11) as well as by the injector base (12).

12. Injector as in claim 1, characterized in that the first deflecting site (41) is formed by a first deflecting surface (45) and by a second deflecting surface (61).

13. Injector as in claim 12 in conjunction with claim 11, characterized in that the first deflecting surface (46) of the first deflecting site (41) is provided on the injector base (12), and that the second deflecting surface (61) of the first deflecting site (41) is provided on the injector body (11).

14. Injector as in claim 8, characterized in that the second deflecting site (49) is formed by a first deflecting surface (51) and a second deflecting surface (62).

15. Injector as in claim 14 in conjunction with claim 9, characterized in that, at the second deflecting site (49), a first deflecting surface (51) is provided on the injector body (11).