DESC:FIELD
The present disclosure relates to the field of textile machines and more specifically to a machine for texturing yarn.
DEFINITION
As used in the present disclosure, the following terms are generally intended to have the meaning as set forth below, except to the extent that the context in which they are used indicate otherwise.
Denier: The term ‘Denier’ used in the context of this disclosure refers to a unit of yarn or fiber measurement. It is defined as the mass density of the fibers that the yarn is made of and indicates the fineness of the fiber. A denier is equal to the mass in grams per 9,000 meters of yarns. The fabric with a higher denier yarn will be thicker, stronger and more durable than the same fabric with a lower denier yarn. Also, a low denier represents finer thread size and a high denier represents a heavier thread size.
Texturing: The term ‘texturing’ used in the context of this disclosure refers to a process in which synthetic fibers are modified to change their “look and feel”. It is defined as a process in which flat filaments are treated to have loops, coils, curl or crimps along their length for gaining increased bulkiness, porosity, softness, enhanced heat retention and elasticity matched for its ultimate application.
These definitions are in addition to those expressed in the art.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
Generally, a yarn texturing machine is configured to impart synthetic yarn with a more natural textile-like appearance. For this purpose, the yarn fed to the texturing machine is twisted in the texturing machine by a twisting unit. Subsequently, the false twist is set in the yarn within a false twist texturing zone by heating the twisted yarn in a heating device. The yarn is heated to a temperature in the range of 140°C to 180°C so as to increase the bulkiness of the yarn. After the heat treatment, the yarn is required to be cooled by a suitable cooling arrangement.
The conventional texturing machines are provided with a cooling unit having a plurality of cooling tubes which are generally 1m long. In conventional machine, nearly 260 cooling tubes are fitted. These cooling tubes are configured to bring down the yarn temperature to a desired level. The yarn is cooled by a convection mode of heat transfer. Also, the cooling tubes must be capable of providing enough residence time to the twisted yarn while reducing the yarn temperature to a desired level.
In the conventional texturing machine having the conventional cooling tube arrangement, processing of around 250 denier yarn is possible. Cooling of the filament or the yarn to a temperature range of 40°C-50°C is achieved at the exit of the cooling tubes, while maintaining a processing speed in the range of 650 m/min to 700 m/min.
However, in the conventional machines, processing of filament or yarn having denier greater than 250 is difficult to achieve at high processing speed. With an increase in processing speed, the residence time of the filament or the yarn reduces which leads to an increase in the yarn exit temperature when it enters the twisting unit. Thereby, the bending strength of the filament or the yarn reduces and thus, leads to a reduction in the twist propagation speed. Further, due to inadequate cooling of filament or the yarn at high speed, it results in increase in the tension and dye variation.
To optimize the cooling of filament or the yarn, therefore in the prior art, reducing the speed through the texturing unit or increasing the length of the cooling tubes is required. However, if the length of the cooling tube increases, then the texturing unit becomes bulky. On the other hand, reduction of the speed has a direct impact on the productivity of the machine. Further, either the reduction in the speed or increase in the length of the cooling tubes requires significant modification in the texturing machine.
There is, therefore, felt a need of a cooling arrangement for a texturing machine that alleviates the above-mentioned drawbacks.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide a cooling arrangement for a yarn texturing machine.
Another object of the present disclosure is to provide a cooling arrangement that facilitates uniform cooling for the yarn while travelling at high speed.
Still another object of the present disclosure is to provide a cooling arrangement in which cooling tubes of a relatively shorter length can be used.
Yet another object of the present disclosure is to provide a cooling arrangement which reduces the space required by the texturing machine.
Still another object of the present disclosure is to provide a cooling arrangement which improves the productivity of the texturing machine.
Yet another object of the present disclosure is to provide a cooling arrangement which enhances the rate of cooling of the yarn passing therethrough.
Still another object of the present disclosure is to provide a method for cooling the yarn.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure envisages a cooling arrangement for a texturing machine. The cooling arrangement comprises an inner tube, an outer tube, and a cooling fluid supply means. The inner tube is defined by a cylindrical body with perforations on the body, and is configured with an inlet port defined at a first end. The outer tube is defined by a cylindrical body, provided with a plurality of guide slots disposed in a substantially spiral path along the body, and is further configured to coaxially and concentrically encase the inner tube. The plurality of guide slots are configured to receive a feed yarn, and further configured to spirally guide the feed yarn along the peripheral surface of the outer tube. The cooling fluid supply means is configured to be in communication with the inlet port of the inner tube, and is further configured to deliver the pressurized cooling fluid through the inner tube. Thereby, the pressurized cooling fluid is allowed to flow out through the plurality of guide slots of the outer tube in an operative configuration.
In an embodiment, the guide slots are configured such that the feed yarn makes a substantially a half revolution along the spiral path of the outer tube in an operative configuration. The cooling fluid supply means is configured to pressurize the cooling fluid to a predetermined pressure, and is further configured to deliver the pressurized cooling fluid to the cooling arrangement. The pressurized cooling fluid is configured to pass through the perforated surface of the inner tube and further configured to flow out through the plurality of guide slots of the outer tube, to thereby the feed yarn travelling across the spiral path is allowed to cool to a desired predetermined temperature.
In an embodiment, the pressurized cooling fluid is selected from filtered air.
In an embodiment, the cooling fluid is pressurized to a pressure in the range of 0.25 bar to 2.5 bar.
In an embodiment, the feed yarn is cooled to the desired predetermined temperature in the range from 45°C to 30°C in 1m length of the outer tube depending upon the denier speed of the yarn.
In an embodiment, the perforations defined on said outer surface of said inner tube are circular perforations.
In an embodiment, the diameter of the circular perforation is in the range of 2.0mm to 2.5mm.
Further, the present disclosure also discloses a method for cooling the yarn, wherein the yarn is being cooled in the yarn texturing machine. The method comprises the following steps:
• feeding the yarn along the path of travel form a first yarn feed device, the first yarn feed device having a feed with a nip-roller pair;
• heating the feeding yarn in a heating device to a predetermined temperature range to obtain a heated yarn;
• supplying pressurized cooling fluid across the cooling arrangement with the help of the cooling fluid supply means;
• spirally guiding the heated yarn along a plurality of guide slots provided on a peripheral surface of the cooling arrangement;
• allowing pressurized cooling fluid to pass through the strands of the heated yarn travelling across the plurality of guide slots;
• cooling the heated yarn by the pressurized cooling fluid to a predetermined temperature range to form a cooled yarn;
• guiding the cooled yarn through a false twist device to obtain a textured yarn; and
• collecting the textured yarn in a winding region.
In an embodiment, the step of heating the feeding yarn, the yarn is heated to the predetermined temperature in the range of 80°C to 180°C depending upon the denier.
In an embodiment, the step of cooling the heated yarn, the yarn is cooled to the predetermined temperature in the range from 45°C to 30°C in 1m length of the outer tube depending up on the denier of the yarn.
In an embodiment, the step of supplying pressurized cooling fluid through said cooling arrangement, the pressure of the cooling fluid is upto 4 bar.
In an embodiment, the step of supplying pressurized cooling fluid through said cooling arrangement, the predetermined temperature of the cooling fluid is in the range of 25°C to 30°C.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWING
A cooling arrangement for a yarn texturing machine and a method for cooling thereof, of the present disclosure will now be described with the help of the accompanying drawing, in which:
Figure 1 illustrates a schematic assembly of a yarn texturing machine, in accordance with an embodiment of the present disclosure;
Figure 2(a) illustrates a schematic of the cooling arrangement of the present disclosure in accordance with an embodiment of the present disclosure;
Figure 2(b) illustrates a side view of concentric tubes of a cooling arrangement in accordance with an embodiment of the present disclosure;
Figure 3(a) and 3(b) illustrates a schematic of an inner tube of the cooling tube assembly, in accordance with an embodiment of the present disclosure;
Figure 4(a) and 4(b) illustrates a schematic of an outer tube of the cooling tube assembly, in accordance with an embodiment of the present disclosure;
Figure 5 (a) and 5 (b) illustrates a schematic of a first end cap having a hole therein of the present disclosure; and
Figure 6 (a) and 6 (b) illustrates a schematic of a second end cap of the present disclosure.
LIST OF REFERENCE NUMERALS USED IN DETAILED DESCRIPTION AND DRAWING
100 - cooling arrangement
10 - inner tube
10a - inlet port
10b - perforations
10c - Tapered opening
20 - outer tube
20a - guide slots
30 - first end cap
30a - hole
30b - first protrusion
40 - second end cap
40a - second protrusion
50 - heating device
52 - un-processed yarn
54 - input roll
56 - unwinding region or yarn feed device
58 - twisting region
58a - false twist disc device
60 - winding region
62
64 -
- output roll
yarn
66a - first end
66b - second end
68 - guide hook
70 - texturing machine

DETAILED DESCRIPTION
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms "a,” "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," “including,” and “having,” are open ended transitional phrases and therefore specify the presence of stated features, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, elements, components, and/or groups thereof.
When an element is referred to as being "mounted on," “engaged to,” "connected to," or "coupled to" another element, it may be directly on, engaged, connected or coupled to the other element. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed elements.
Generally, a yarn texturing machine is configured to impart synthetic yarn a more textile-like appearance. For this purpose, the yarn fed to the texturing machine is twisted in the texturing machine by a twisting unit, followed by subsequent heating and cooling.
The conventional texturing machines are provided with a cooling arrangement having a plurality of cooling tubes. These cooling tubes are configured to bring down the yarn temperature to a desired level. In the conventional texturing machines, processing of around 250 denier yarn is possible, cooling of the filament or the yarn to a temperature of 40°C-50°C is achieved at the exit of the cooling tubes while maintaining a processing speed in the range of 650 m/min to 700 m/min.
However, in the conventional machines, processing of filament or the yarn having denier greater than 250 is difficult to achieve at high processing speed. With an increase in processing speed, the residence time of the filament or the yarn reduces which leads to an increase in the yarn exit temperature when it enters in the twisting unit. Thereby, the bending strength of the filament or the yarn reduces and thus, leads to a reduction in the twist propagation speed. Further, at high speed due to inadequate cooling of the filament or the yarn, it results in increase in the tension and dye variation.
To overcome the aforementioned drawbacks, the present disclosure envisages a cooling arrangement 100 for a yarn texturing machine 70. Figure 1 illustrates a schematic assembly of different components involved in processing of the yarn (64) in accordance with the present disclosure. The yarn texturing machine (70) comprises a yarn feed device (56), a heating device (50), a cooling arrangement (100), a false-twist disc device (58a) and a winding region (60). The yarn (64) is fed from the yarn feed device (56), which includes feed and nip roller pair. The heating device (50) is disposed downwardly which is configured to receive the yarn. The heating device (50) is configured to adequate heating of the yarn to a predetermined temperature.
In an embodiment, the yarn is heated to a temperature in the range of 80 °C to 180°C depending upon denier and speed. Further, the cooling arrangement (100) is arranged in-line with the heating device (50). Therefore, the heated yarn is received by an operative end of the cooling arrangement (100). The cooling arrangement is configured to cool the heated yarn to a desired predetermined temperature.
In an embodiment, the heated yarn is cooled to the desired predetermined temperature in the range from 45°C to 30°C in 1m length of the outer tube depending up on the denier of the yarn.
Further the cooled yarn is fed to the false twist disc device (58a), which is configured to produce a textured yarn. And the textured yarn is collected at the winding region for further application.
In an embodiment, the yarn feed device (56), the heating device (50), the cooling arrangement (100), the false-twist disc device (58a) and the winding region (60) are arranged sequentially along the travelling path of the yarn.
An embodiment of the present disclosure will now be described with reference to the Figure 2 to Figure 6. The cooling arrangement (100) of the present disclosure comprises an inner tube (10), an outer tube (20), a cooling fluid supply means, a first end cap (30), and a second end cap (40). The inner tube (10) and the outer tube (20) are defined by a cylindrical body. The inner tube (10) has a first end (66a) and a second end (66b), wherein an inlet port (10a) is configured at the first end (66a). The first end (66a) and the second end (66b) are configured with a tapered opening (10c). Further, the body of the inner tube (10) have perforations (10b), whereas the body of the outer tube (20) is configured with a plurality of guide slots (20a) disposed in a substantially spiral path along the body. The outer tube (20) is configured to be coaxially arranged and concentrically encase the inner tube (10). Therefore, when the heated yarn is fed from the heating device (50), the yarn is allowed to pass over the guided slots (20a) in such a way that the fed yarn (64) travels spirally along the peripheral surface of the outer tube (20). Figure 2(a) illustrates a schematic of the cooling arrangement and Figure 2(b) illustrates a side view of concentric tubes of a cooling arrangement in accordance with an embodiment of the present disclosure.
In an embodiment, the material for the inner tube (10) and the outer tube (20) are selected from a group of material consisting Aluminum with chrome plating.
In an embodiment, the perforations (10b) defined on the body of the inner tube (10) are circular perforations.
In an embodiment, the diameter of the circular perforation (10b) is in the range of 1.0mm to 1.5mm.
In an embodiment, the guide slots (20a) are configured such that the feed yarn makes a substantially a half revolution along the spiral path provided on the outer tube (20) in an operative configuration of the cooling arrangement. Thus, the spiral path made by the plurality of the guide slots (20a) facilitates effective increase in the path of cooling and thereby increases the effective cooling of the yarn (64).
In an embodiment, each of the guide slots (20a) has a dimension of 2mm * 10mm.
Figure 3(a) and 3(b) illustrates a schematic of an inner tube of the cooling tube assembly, and Figure 4(a) and 4(b) illustrates a schematic of an outer tube of the cooling tube assembly, in accordance with an embodiment of the present disclosure.
Further, the outer tube (20) is configured with a pair of guide hooks (68). Each of the guide hooks (68) are configured to spirally guide the yarn (64) to pass over the guide slots (20a) in an operative configuration of the arrangement. The guide hooks (68) are configured to be located at the extremities of the outer tube (20) at 180° with respect to each other. The guide hook is shown in figure 2(b).
In an embodiment, the guide hook has a cross-section of 13.89mm*10.00mm with an interspace distance between legs is 1.50mm and thickness is 1.45mm. The radius of curvature of the guide hook is 0.75mm.
Further, the first end cap (30) and the second end cap (40) are provided with the cooling arrangement (100). The first end cap (30) is defined by a circular disc and configured with a first protrusion (30a) on its operative surface and a hole (30a), thereon. The second end cap (40) is defined by a circular disc and configured with a second protrusion (40a), however there is no hole configured on the second protrusion. The first end cap (30) and the second end cap (40) are configured to be mounted on to the concentric ends of the tubes in such a way that the first protrusion (30b) and the second protrusion (40a) are configured to be received within the tapered opening (10c) of the first end (66a) and the second end (66b), respectively, and the hole (30a) defined on the first protrusion (30b) becomes in-line with the inlet port (10a), provided on the inner tube (10). Figure 5 (a) and 5 (b) illustrates a schematic of a first end cap having a hole therein, and Figure 6 (a) and 6 (b) illustrates a schematic of a second end cap of the present disclosure.
In an embodiment, the first end cap (30) and the second end cap (40) are either threadedly fitted or push-fitted to the ends of the inner tube (10), so as to close the concentric ends of the cooling arrangement (100).
In an embodiment, the first protrusion (30b) and the second protrusion (40a) are complementary to the tapered opening (10c), provided at the first end (66a) and the second end (66b) of the inner tube (10).
In an embodiment, the second end cap (40) is configured to close the second end (66b) of the inner tube (10).
Further, the cooling fluid supply means is configured to be in communication with the inlet port (10a) of the inner tube (10) by means of the first end cap (30). The cooling fluid supply means is configured to pressurize the cooling fluid to a predetermined pressure, and further configured to deliver the pressurized cooling fluid to the cooling arrangement through the inlet port (10a). Thus, the pressurized cooling fluid is configured to pass through the perforated surface of the inner tube (10) and is further configured to flow out through the plurality of guide slots (20a) of the outer tube. Since, the heated yarn is travelling across the spiral path (of the guide slots) over the outer tube, therefore the feed yarn gets cool to a desired predetermined temperature by means of the pressurized cooling fluid in an operative configuration of the cooling arrangement (100).
In an embodiment, the pressurized cooling fluid is selected from filtered air or instrumented air.
In an embodiment, a filter is provided before the inlet port (10a), wherein the thickness of the filter is in the range of 5 microns to 10 microns.
In an embodiment, the cooling fluid is pressurized to a pressure upto 4 bar.
In an embodiment, the cooling arrangement (100) is inclined downwardly towards the false-twist disc device (58a).
In an embodiment, the length of the cooling arrangement is in the range of 1.0m to 1.75m.
Advantageously, the cooling arrangement (100) is configured with the forced air circulation over the heated yarn as it passes through the guide slots. Thus, the air blow over the yarn increases the heat transfer coefficient and enhances the rate of cooling of the yarn. Also, the forced air cooling ensures the yarn with consistent quality.
In addition, the cooling arrangement is configured to texturized the heavy deniers for example 700 denier at 425mpm.
Further, the present disclosure also envisages a method of cooling the yarn (64). The yarn (64) is being cooled in the yarn texturing machine (70). The method comprises the following steps:
• feeding the yarn (64) along the path of travel form the first yarn feed device;
• heating the feeding yarn in the heating device (50) to the predetermined temperature range to obtain the heated yarn;
• supplying pressurized cooling fluid across the cooling arrangement with the help of the cooling fluid supply means;
• spirally guiding the heated yarn along the plurality of guide slots provided on the peripheral surface of the cooling arrangement;
• allowing the pressurized cooling fluid to pass through the strands of the heated yarn travelling across the plurality of guide slots;
• cooling the heated yarn by the pressurised cooling fluid to the predetermined temperature range to form the cooled yarn;
• guiding the cooled yarn through the false twist disc device to obtain the textured yarn; and
• collecting the textured yarn in the winding region.
In an embodiment, the step of heating the feeding yarn, the yarn is heated to the predetermined temperature in the range of 80°C to 180°C depending upon denier and speed.
In an embodiment, the step of cooling the heated yarn, the yarn is cooled to the predetermined temperature in the range from 45°C to 30°C in 1m length of the outer tube depending upon the denier of the yarn.
In an embodiment, the step of supplying the pressurized cooling fluid through the cooling arrangement, the pressure of the cooling fluid upto 4.0 bar.
In an embodiment, the step of supplying pressurized cooling fluid through the cooling arrangement, the predetermined temperature of the cooling fluid is in the range of 25°C to 30°C.
Advantageously, since the yarn travels across the spiral or helical path made by the slots, therefore the heated yarn gets cooled evenly by pressurized air before travelling towards the twisting device. The flow of pressurized air ensures in achieving the desired yarn temperature when it enters the twisting device, and thus providing a consistent quality of the yarn. Further, since the yarn is getting cooled by the flow of pressurized air, therefore processing of the yarn having denier greater than 250 is possible even at high speed.
EXAMPLE
In an exemplary embodiment, the yarn is fed to normal cooling, under the conventional cooling arrangement and the cooling arrangement of the present disclosure. The experimental result is tabulated in table 1.
Case Normal cooling Speed Increase with conventional machine Speed Increase with Cooling arrangement
Denier 520 520 520
Filaments 72 72 72
Process Speed (rpm) 700 800 800
Draw 1.765 1.765 1.765
D/Y Ratio 1.85 1.85 1.85
Primary Heater Length (mm) 1.75 1.75 1.75
Pre heater Temp Zone 1 223 223 223
Pre heater Temp Zone 2 223 223 223
Cooling Tube Length 1.05 1.05 1.05
Draw point distance in Preheater (PH) 396 453 453
Yarn Temp at Pre-Heater exit 166 158.6 158.6
Yarn Temp at cooling tube exit 77.7 81 40.4
The experimental results shows that cooling arrangement as disclosed by the present disclosure shows a higher temperature drop as compared to normal cooling or the conventional cooling arrangement.
The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCES AND ECONOMICAL SIGNIFICANCE
The present disclosure described herein above has several technical advantages including, but not limited to, the realization of the cooling arrangement for the yarn texturing machine and a method of cooling thereof, that:
• facilitates uniform cooling of the yarn even when the yarn travels at high speed, as the yarn is getting cooled by pressurized air;
• provides compact arrangement of the tubes, as the construction uses a tube-in-tube configuration;
• improves the productivity of the texturing machine, as the yarn is getting cooled evenly without affecting the residence time of the yarn;
• increases the rate of cooling of the yarn, as the arrangement utilizes pressurized air to cool the yarn;
• forced air cooling tube improves dye uniformity of the yarn;
• forced air cooling improves surging speed thereby increase in machine speed;
• the spiral guide slots facilitates the effective increase in the path of cooling for the yarn and thereby increases the effective cooling of the yarn and
• forced air cooling improves bulkiness in the yarn.
The foregoing description of the specific embodiments so fully reveals the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Throughout this specification the word “comprise”, or variations such as “comprises” or “comprising”, will be understood to imply the inclusion of a stated element, or group of elements, but not the exclusion of any other element, or group of elements.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation. ,CLAIMS:WE CLAIM:
1. A cooling arrangement (100) for a yarn texturing machine (70), said cooling arrangement (100) comprising:
• an inner tube (10), defined by a cylindrical body having perforations (10b) on the body, and configured with an inlet port (10a) defined at a first end (66a);
• an outer tube (20), defined by a cylindrical body having a plurality of guide slots (20a) disposed in a substantially spiral path along the body, and further configured to coaxially and concentrically encase said inner tube (10);
• said plurality of guide slots (20a), configured to receive a yarn (64), and further configured to spirally guide the yarn (64) along the peripheral surface of said outer tube (20) over said guide slots (20a); and
• a cooling fluid supply means, configured to be in communication with said inlet port (10a) of said inner tube (10), and further configured to deliver the pressurized cooling fluid through said inner tube (10), to thereby the pressurized cooling fluid allowed to flow out through said plurality of guide slots (20a) of said outer tube (20) in an operative configuration.
2. The cooling arrangement (100) as claimed in claim 1, wherein said guide slots (20a) are configured such that the yarn makes a substantially a half revolution along said spiral path of said outer tube (20) in an operative configuration.
3. The cooling arrangement (100) as claimed in claim 1, wherein said outer tube is configured with a pair of guide hooks.
4. The cooling arrangement (100) as claimed in claim 3, wherein each of said guide hooks are configured to spirally guide the yarn to pass over said guide slots in an operative configuration of said arrangement.
5. The cooling arrangement (100) as claimed in claim 3, wherein said guide hooks are configured to be located at the extremities of said outer tube at 180° with respect to each other.
6. The cooling arrangement (100) as claimed in claim 1, wherein said cooling fluid supply means is configured to pressurize the cooling fluid to a predetermined pressure, and further configured to deliver the pressurized cooling fluid to said cooling arrangement (100).
7. The cooling arrangement (100) as claimed in claim 6, wherein the pressurized cooling fluid is selected from filtered air or instrumented air.
8. The cooling arrangement (100) as claimed in claim 6, wherein the pressurized cooling fluid is configured to pass through said perforations (10b) of said inner tube (10) and further configured to flow out through said plurality of guide slots (20a) of said outer tube (20), to thereby the yarn travelling across said spiral path is allowed to cool to a desired predetermined temperature.
9. The cooling arrangement (100) as claimed in claim 6, wherein the cooling fluid is pressurized to a pressure up to 4.0 bar.
10. The cooling arrangement (100) as claimed in claim 8, wherein the yarn is cooled to the desired predetermined temperature from 45°C to 30°C in 1m length of the outer tube depending on the denier of the yarn.
11. The cooling arrangement (100) as claimed in claim 1, wherein the perforations (10b) defined on the body of said inner tube (10) are circular perforations.
12. The cooling arrangement (100) as claimed in claim 11, wherein the diameter of the circular perforation is in the range of 2.0mm to 2.5mm.
13. The cooling arrangement (100) as claimed in claim 1, wherein said first end (66a) and a second end (66b) of said inner tube (10) are configured with a tapered opening (10c).
14. The cooling arrangement (100) as claimed in claim 13, wherein said cooling arrangement (100) is further comprises a first end cap (30) and a second end cap (40), said caps (30, 40) are configured to be mounted on to the concentric ends of said cooling arrangement (100).
15. The cooling arrangement (100) as claimed in claim 14, wherein said first end cap (30) and said second end cap (40) are either threadedly fitted or push-fitted to said ends (66a, 66b) of said inner tube (10).
16. The cooling arrangement (100) as claimed in claim 14, wherein said first end cap (30) is defined by a circular disc, and is configured with a first protrusion (30b) with a hole (30a) thereon,
17. The cooling arrangement (100) as claimed in claim 14, wherein said second end cap (40) is defined by a circular disc, and is configured with a second protrusion (40a).
18. The cooling arrangement (100) as claimed in anyone of claim 16 or claim 17, wherein said first protrusion (30b) and said second protrusion (40a) are complementary to said tapered opening (10c).
19. The cooling arrangement (100) as claimed in claim 16, wherein said first protrusion (30b) is configured to be received within said tapered opening (10c), to thereby the hole (30a) defined on said first protrusion (30b) becomes in-line with said inlet port (10a).
20. The cooling arrangement (100) as claimed in claim 17, wherein said second protrusion (40a) is configured to be received within said tapered opening (10c).
21. The cooling arrangement (100) as claimed in claim 1, wherein the texturing machine (70) comprise a heating device (50), said cooling arrangement (100) is in-line and disposed downwardly to said heating device (50).
22. The cooling arrangement (100) as claimed in claim 1, wherein the texturing machine (100) comprise a false-twist disc device (58a), said cooling arrangement (100) is inclined downwardly towards said false-twist disc device (58a).
23. The cooling arrangement (100) as claimed in claim 1, wherein the length of said cooling arrangement (100) is in the range of 1.0m to 1.75m.
24. A method for cooling a yarn, wherein the yarn is being cooled in a yarn texturing machine (70), said method comprises the following steps:
• feeding a yarn (64) along the path of travel form a first yarn feed device (56), said first yarn feed device (56) having a feed with a nip-roller pair;
• heating the yarn in a heating device (50) to a predetermined temperature range to obtain a heated yarn;
• supplying pressurized cooling fluid across a cooling arrangement (100) with the help of a cooling fluid supply means;
• spirally guiding the heated yarn along a plurality of guide slots (20a) provided on a peripheral surface of said cooling arrangement (100);
• allowing pressurized cooling fluid to pass through the strands of the heated yarn travelling across said plurality of guide slots (20a);
• cooling the heated yarn by the pressurised cooling fluid to a predetermined temperature range to form a cooled yarn;
• guiding the cooled yarn through a false twist disc device (58a) to obtain a textured yarn; and
• collecting the textured yarn in a winding region (60).
25. The method as claimed in claim 24, wherein the step of heating the feeding yarn, the yarn is heated to the predetermined temperature in the range of 80°C to 180°C depending upon denier and speed.
26. The method as claimed in claim 24, wherein the step of cooling the heated yarn, the yarn is cooled to the predetermined temperature from 45°C to 30°C in 1m Length of said outer tube depending upon the denier of the yarn.
27. The method as claimed in claim 24, wherein the step of supplying pressurized cooling fluid through said cooling arrangement, the pressure of the cooling fluid up to 4 bar.
28. The method as claimed in claim 24, wherein the step of supplying pressurized cooling fluid through said cooling arrangement, the predetermined temperature of the cooling fluid is in the range of 25°C to 30°C.

Dated this 15th day of February, 2023

_______________________________
MOHAN RAJKUMAR DEWAN, IN/PA – 25
of R.K.DEWAN & CO.
Authorized Agent of Applicant

TO,
THE CONTROLLER OF PATENTS
THE PATENT OFFICE, AT MUMBAI