JP5645594B2 - Yarn heating device - Google Patents

Description

  The present invention relates to a yarn heating device for heating a yarn.

  Patent Document 1 describes that a plurality of yarns spun from a spinning machine are wound in a winder (winding machine) after being stretched while being heated in two roller portions. More specifically, the plurality of yarns spun from the spinning machine are wound a plurality of times between the godet roller and the separate roller in each roller portion, and while being fed a plurality of times between these rollers. Heated by a godet roller. And the heated yarn is extended | stretched between the two godet rollers which respectively comprise two roller parts.

  Further, the godet roller and the separation roller of each roller portion are accommodated in the internal space of the box (heat insulation box), and the heat generated by the heater of the godet roller is difficult to escape from the internal space. In addition, two slits are formed on the outer wall of the box, and the yarn passes through one of the slits (yarn inlet) and enters the internal space, and the other slit (yarn outlet) passes through the slit. Go out of the box through the internal space.

JP 2001-262429 A

  Here, generally, when the yarn travels, an air flow (associated flow) is generated around the yarn. Therefore, when the yarn enters the internal space through the slit, cold air outside the box flows into the internal space through the slit. When the yarn exits from the internal space through the slit, warm air in the internal space flows out of the box through the slit. Then, when cold air flows into the internal space or warm air flows out from the internal space, the temperature of the internal space decreases, so the heater necessary for heating the yarn to an appropriate temperature Power consumption increases.

  In particular, when the number of running yarns is large or when the running speed of the yarn is high, the accompanying flow increases, the amount of cold air that flows into the internal space, and the warm air that flows out of the internal space Since the amount of the above increases, the above-described problem becomes remarkable.

  The objective of this invention is providing the yarn heating apparatus which can reduce the power consumption of the heater for heating the yarn sent by the yarn feeding roller.

A yarn heating device according to a first aspect of the present invention includes a yarn feeding roller that feeds a yarn, a heater that heats the yarn fed by the yarn feeding roller, the yarn feeding roller, and the heater. A heat insulation box, wherein the heat insulation box has a yarn inlet for inserting a yarn into the internal space of the heat insulation box from outside the heat insulation box, and a yarn from the internal space to the outside of the heat insulation box. A yarn exit for feeding out, and in the internal space, a region on the yarn entrance side and the yarn as heat transfer means for transferring heat from the yarn exit side to the yarn entrance side It is characterized in that a heat exchanger extending across the region on the strip outlet side is provided.

  According to the present invention, part of the warm air heat on the yarn outlet side that flows out of the heat insulation box by the accompanying flow generated in the vicinity of the yarn outlet is transferred from the yarn outlet side to the yarn inlet side by the heat transfer means. By this heat, the cold air flowing into the internal space is warmed by the accompanying flow generated in the vicinity of the yarn entrance. That is, when warm air flows out of the heat insulation box, a part of the heat stays in the internal space without escaping to the outside of the heat insulation box. Therefore, the temperature drop in the internal space is suppressed, and the power consumption of the heater necessary for heating the yarn to an appropriate temperature can be reduced.

The yarn heating device according to a second aspect of the present invention is the yarn heating device according to the first aspect of the present invention, wherein the internal space is a heat insulating space in which the yarn feeding roller and the heater are arranged by a partition, and the heat insulating material. An inlet side space provided between the space and the yarn inlet, and an outlet side space provided between the heat retaining space and the yarn outlet, the heat retaining space and the inlet A partition partitioning the side space is provided corresponding to the yarn inlet, and an inlet side communication passage is formed to communicate the heat retaining space and the inlet side space. The heat retaining space and the outlet A partition wall that partitions the side space is provided corresponding to the yarn outlet, and an outlet side communication passage that connects the heat retaining space and the outlet side space is formed, and the heat exchanger includes: Across the entrance side space and the exit side space And wherein the Biteiru.

  According to the present invention, part of the heat of warm air that has flowed from the heat insulation space to the outlet side space by the accompanying flow is transmitted to the inlet side space by the heat transfer means, and further flows into the inlet side space from the outside of the heat insulation box. Cold air is heated by this heat and then flows into the heat insulation space. That is, a part of the heat escaping from the heat insulation space to the outlet side space returns to the heat insulation space. Therefore, the temperature drop of the heat insulation space is suppressed, and the power consumption of the heater necessary for heating the yarn to an appropriate temperature can be reduced.

  Furthermore, since the heat insulation space and the inlet side space are partitioned by a partition wall and communicated only via the inlet side communication path, the cold air that has flowed into the inlet side space is transferred from the outlet side space. After being sufficiently warmed, the air flows into the heat insulation space, and the temperature decrease in the heat insulation space can be reliably suppressed.

  In addition, since the outlet side space and the heat insulation space are partitioned by a partition wall and communicated only via the outlet side communication passage, heat does not easily escape from the heat insulation space to the outlet side space, which reduces the temperature of the heat insulation space. It can be surely suppressed.

  Further, since the inlet side space and the outlet side space are partitioned by the partition wall, it is possible to prevent the heat transferred from the outlet side space to the inlet side space by the heat transfer means from returning to the outlet side space. it can.

  A yarn heating device according to a third invention is characterized in that, in the yarn heating device according to the second invention, a partition partitioning the internal space is formed of a heat insulating material.

  According to the present invention, since the partition wall that partitions the inlet side space and the outlet side space is formed of the heat insulating material, heat transfer between the heat insulating space, the inlet side space, and the outlet side space via the partition wall is unlikely to occur. It is ensured that heat escapes from the heat insulation space to the entrance side space and the exit side space, and that heat transferred from the exit side space to the entrance side space by the heat transfer means returns to the exit side space. Can be prevented.

  A yarn heating device according to a fourth invention is characterized in that, in the yarn heating device according to the second or third invention, an exhaust duct is connected to the outlet side space.

  According to the present invention, oily smoke generated by heating the yarn can be discharged from the duct to the outside of the heat insulation box. Furthermore, since the exhaust duct is connected to the outlet side space partitioned from the heat insulation space by the partition wall, heat is less likely to escape from the exhaust duct than when the exhaust duct is connected to the heat insulation space. Further, since the heat in the outlet side space is transmitted to the inlet side space by the heat transfer means, the heat is more difficult to escape from the exhaust duct.

The yarn heating device according to a fifth invention is the yarn heating device according to the fourth invention, wherein the heat exchanger is connected to the outlet side space of the duct in the outlet side space, and It is arrange | positioned in the area | region located between an exit side communicating path, It is characterized by the above-mentioned.

  According to the present invention, warm air that has flowed from the heat retaining space to the outlet side space through the outlet side communication passage passes through the region where the heat transfer means is disposed and is then discharged from the exhaust duct. In addition, heat is more difficult to escape from the exhaust duct.

A yarn heating device according to a sixth invention is the yarn heating device according to any one of the second to fifth inventions, wherein the heat exchanger extends over the inlet side space and the outlet side space. It is characterized by having a heat pipe.

  According to the present invention, the heat pipe can efficiently transfer the heat of the outlet side space to the inlet side space.

  A yarn heating device according to a seventh invention is the yarn heating device according to any one of the first to sixth inventions, wherein the yarn feed roller is a heating roller provided with the heater. To do.

  According to the present invention, even when the yarn feeding roller is a heating roller provided with a heater, a part of the heat escaping from the heat retaining space returns to the heat retaining space, so that a decrease in the temperature of the heat retaining space can be suppressed. Further, since the yarn feeding roller is a heating roller provided with a heater, it is not necessary to provide a heater separately from the yarn feeding roller, and the configuration of the apparatus is simplified.

  A yarn heating device according to an eighth invention is the yarn heating device according to any one of the first to seventh inventions, wherein the yarn feed roller is a roller for extending the yarn. And

  According to the present invention, even when the yarn feeding roller is a roller for extending the yarn, a part of the heat escaping from the heat insulation space returns to the heat insulation space, so that a decrease in the temperature of the heat insulation space can be suppressed. .

  According to the present invention, part of the heat of the warm air on the yarn outlet side that flows out of the heat insulation box by the accompanying flow generated in the vicinity of the yarn outlet is transferred from the yarn outlet side to the yarn inlet side by the heat transfer means. The heat that is transferred warms the cold air that flows into the interior space by the accompanying flow that occurs near the yarn entrance. That is, when warm air flows out of the heat insulation box, a part of the heat stays in the internal space without escaping to the outside of the heat insulation box. Therefore, the temperature drop in the internal space is suppressed, and the power consumption of the heater necessary for heating the yarn to an appropriate temperature can be reduced.

1 is a schematic configuration diagram of a yarn manufacturing apparatus according to an embodiment of the present invention. It is a perspective view of the roller unit of FIG. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. FIG. 10 is a diagram corresponding to FIG. FIG. 10 is a diagram corresponding to FIG. FIG. 10 is a diagram corresponding to FIG. FIG. 10 is a diagram corresponding to FIG. FIG. 10 is a diagram corresponding to FIG.

  Hereinafter, preferred embodiments of the present invention will be described.

  As shown in FIG. 1, the yarn manufacturing apparatus 1 includes a spinning machine 2, two roller units 3, 4 (yarn heating device), and a winder 5. The spinning machine 2 spins a plurality of (for example, about 24 to 32) yarns Y in a state of being arranged in a direction perpendicular to the paper surface of FIG. The roller units 3 and 4 extend a plurality of yarns Y spun from the spinning machine 2 while heating. The winder 5 winds the plurality of yarns Y drawn by the roller units 3 and 4 onto a bobbin (not shown).

  Of the above-described configuration of the yarn manufacturing apparatus 1, the configurations of the spinning machine 2 and the winder 5 are the same as those in the related art, and thus detailed description thereof will be omitted. To do.

  The roller unit 3 is disposed below the spinning machine 2 as shown in FIG. 1, and as shown in FIGS. 1 to 4, the godet roller 11, the separation roller 12, and a heat insulating box for housing these. 13.

  The heat insulation box 13 is a substantially rectangular parallelepiped box made of a heat insulating material. The heat insulation box 13 is provided with a door 13a at one end in the arrangement direction of the yarn Y spun from the spinning machine 2, and when the door 13a is closed, the internal space 20 of the heat insulation box 13 is closed. When 13a is opened, the internal space 20 is exposed.

  Further, slits 25 a and 25 b are formed in the upper wall 13 b of the heat insulating box 13. The slits 25a and 25b extend in parallel with the arrangement direction of the yarns Y, and the ends on the door 13a side are open. However, the lengths of the slit 25a and the slit 25b are different from each other. The slit 25a extends over almost the entire length of the heat insulating box 13, whereas the slit 25b is shorter in length than the slit 25a. It has become. When the door 13a is closed, the openings of the slits 25a and 25b are closed by the door 13a.

  The yarn Y spun from the spinning machine 2 enters the internal space 20 through the end 25a1 (yarn entrance) opposite to the door 13a of the slit 25a and enters the internal space 20 as will be described later. The yarn Y goes out of the internal space 20 through the slit 25b (yarn exit).

  Next, the internal space 20 of the heat insulation box 13 will be described. The internal space 20 of the heat insulating box 13 is partitioned into a heat insulating space 21, an inlet side space 22, an outlet side space 23, and an isolation space 24 by partition walls 28 to 30 made of a heat insulating material.

  A godet roller 11 and a separate roller 12 are disposed in the heat retaining space 21. The godet roller 11 is a roller that is cantilevered by a frame (not shown) disposed on the side opposite to the door 13 a of the heat insulating box 13, and a plurality of yarns Y spun from the spinning machine 2 are taken up by the godet roller 11. .

  The separation roller 12 is disposed above the godet roller 11 and is cantilevered by a frame (not shown) disposed on the side opposite to the door 13 a of the heat retaining box 13, similar to the godet roller 11. The plurality of yarns Y taken up by the godet roller 11 are wound around the godet roller 11 and the separate roller 12 a plurality of times, and are sent to the roller unit 4 after being sent between these rollers 11 and 12 a plurality of times. . In the present embodiment, the godet roller 11 and the separate roller 12 correspond to the yarn feed roller according to the present invention.

  The godet roller 11 and the separation roller 12 are each a heating roller provided with a heater 15 inside, and the yarn Y is heated while being fed between the godet roller 11 and the separation roller 12.

  The inlet-side space 22 is disposed in a portion (between the heat insulating space 21 and the yarn inlet) facing the end 25a1 of the slit 25a above the heat insulating space 21, and is kept warm by a partition wall 28 extending horizontally. It is partitioned into a space 21 and up and down. A slit 26a is formed in the partition wall 28 at a portion facing the slit 25a, and the inlet side space 22 and the heat retaining space 21 are connected to an end 26a1 (inlet side communication path) opposite to the door 13a of the slit 26a. Communicate only through. Here, similarly to the slit 25a, the end of the door 26a side of the slit 26a is opened.

  The exit side space 23 extends over the entire length of the heat insulation box 13 in the portion (between the heat insulation space 21 and the yarn exit) above the heat insulation space 21 and facing the slit 25b with respect to the arrangement direction of the yarn Y. Yes. Further, the outlet side space 23 is partitioned from the heat retaining space 21 in the vertical direction by the partition wall 28, similarly to the inlet side space 22. In the partition wall 28, a slit 26b (exit side communication path) is further formed at a portion facing the slit 25b, so that the exit side space 23 and the heat retaining space 21 communicate with each other only through the slit 26b. Yes. Here, the slit 26b is open at the end on the door 13a side, similarly to the slit 25b.

  In addition, a connection port 13d provided with a filter 27 is formed in a part of the side wall 13c opposite to the door 13a of the heat insulation box 13 to be a wall of the outlet side space 23. The connection port 13d has an exhaust duct. 9 is connected. The exhaust duct 9 is connected to a blower (not shown). Generally, an oil containing water is applied to the yarn Y, and when the yarn Y is heated, oily smoke is generated. Therefore, in the present embodiment, the filter 27 captures the oil contained in the air by operating the blower and sucking the air in the outlet side space 23 from the exhaust duct 9. Thereby, the working environment is kept clean.

  The isolation space 24 is formed above the heat insulation space 21 except for the inlet side space 22 and the outlet side space 23, and is separated from the heat insulation space 21 by a partition wall 28 and is substantially L-shaped. The inlet side space 22 is partitioned by a partition wall 29 having a shape, and the outlet side space 23 is partitioned by a partition wall 30 extending substantially parallel to the slits 25a and 25b. That is, the isolation space 24 does not communicate with any of the heat retaining space 21, the entrance side space 22, and the exit side space 23.

  In addition, a heat exchanger 40 (heat transfer means) is provided in the internal space 20 of the heat insulation box 13. The heat exchanger 40 is for transferring heat of the outlet side space 23 to the inlet side space 22, and includes a plurality of heat pipes 41, a plurality of heat collection fins 42, and a plurality of heat radiation fins 43.

  The plurality of heat pipes 41 are filled with a working fluid made of, for example, water, alcohol, chlorofluorocarbon, or the like, inside a metal cylinder whose ends are closed. It extends over the outlet side space 23. Moreover, the part located in the exit side space 23 among the heat pipes 41 is located between the slits 25b and 26b and the connection port 13d. Further, a portion of the heat pipe 41 located in the isolation space 24 is covered with a heat insulating material 44.

  The heat collecting fins 42 and the heat radiating fins 43 are plate-like bodies made of a metal material arranged in the outlet side space 23 and the inlet side space 22 along the axial direction of the heat pipe 41, respectively. Is extended through the plurality of heat collecting fins 42 and the heat radiating fins 43 so as to be connected to the heat collecting fins 42 and the heat radiating fins 43.

  Here, heat transfer in the heat exchanger 40 will be described. In the heat insulating box 13, as will be described later, cold air flows from the outside of the heat insulating box 13 into the inlet side space 22, and warm air flows from the heat insulating space 21 into the outlet side space 23.

  When warm air flows from the heat retaining space 21 to the outlet side space 23, the working fluid filled in the portion of the heat pipe 41 located in the outlet side space 23 is warmed and vaporized by the heat of the air. . Then, the pressure of the part located in the outlet side space 23 of the heat pipe 41 becomes higher than the pressure of the part located in the inlet side space 22 or the isolation space 24. When such a pressure difference occurs, the hydraulic fluid in the portion located in the inlet side space 22 and the isolation space 24 of the heat pipe 41 moves to the outlet side space 23 side by capillary action, and correspondingly, The vaporized working fluid moves to the inlet side space 22 side.

  The hydraulic fluid that has moved to the outlet side space 23 is warmed and vaporized by warm air in the outlet side space 23 as described above, and the hydraulic fluid that has moved to the inlet side space 22 becomes cold air in the inlet side space 22. It cools and condenses back to liquid. As a result, the hydraulic fluid moves in the heat pipe 41 as described above. The movement of the hydraulic fluid is repeatedly performed, so that the heat in the outlet side space 23 is transmitted to the inlet side space 22.

  At this time, since the heat collecting fins 42 and the radiation fins 43 are attached to the part of the heat pipe 41 located in the outlet side space 23 and the part located in the inlet side space 22, respectively, The heat of the space 23 is efficiently transmitted to the working fluid in the heat pipe 41, and the heat of the heat pipe 41 is efficiently transmitted to the inlet side space 22.

  Furthermore, since the part located in the isolation space 24 of the heat pipe 41 is covered with the heat insulating material 44, the heat transmitted from the outlet side space 23 to the inlet side space 22 is difficult to escape to the isolation space 24 on the way. The heat in the outlet side space 23 is more efficiently transferred to the inlet side space 22.

  Similar to the roller unit 3, the roller unit 4 includes a goded roller 11, a separate roller 12, and a heat insulating box 13.

  However, in the roller unit 4, the top and bottom of the goded roller 11 and the separate roller 12 are opposite to those of the roller unit 3. Further, the heat insulation box 13 of the roller unit 4 has the heat insulation space 21, the inlet side space 22, the outlet side space 23, and the isolation space 24, which are opposite to the heat insulation box 13 of the roller unit 3. Correspondingly, slits 25a and 25b are formed in the lower wall 13e of the heat insulation box 13.

  The roller unit 4 is disposed above the roller unit 3 so that its slit 25 a faces the slit 25 b of the roller unit 3.

  In the yarn manufacturing apparatus 1 having the above configuration, a plurality of yarns Y spun from the spinning machine 2 are sent to the roller unit 3. The yarn Y sent to the roller unit 3 enters the inlet side space 22 through the end 25a1 (yarn inlet) of the slit 25a, and further enters the heat retaining space 21 through the slit 26a. Then, after being taken up by the godet roller 11 in the heat retaining space 21 and being sent a plurality of times between the godet roller 11 and the separating roller 12, it passes through the slit 26b, exits from the heat retaining space 21 to the outlet side space 23, and further slit 25b It passes through the (yarn exit) and goes out of the heat insulation box 13 and is sent to the roller unit 4.

  The yarn Y sent to the roller unit 4 enters the inlet side space 22 through the end 25a1 (yarn inlet) of the slit 25a, and further enters the heat retaining space 21 through the slit 26a, as described above. enter. Then, after being taken up by the godet roller 11 in the heat retaining space 21 and being sent a plurality of times between the godet roller 11 and the separating roller 12, it passes through the slit 26b, exits from the heat retaining space 21 to the outlet side space 23, and further slit 25b It passes through the (yarn exit) and goes out of the heat insulation box 13 and is sent to the winder 5.

  Thereby, the yarn Y travels from the spinning machine 2 toward the winder 5 at a speed of, for example, about 4000 to 6000 m / min. At this time, the yarn Y is heated while being fed between the godet roller 11 and the separate roller 12 of the roller units 3 and 4. Further, the godet roller 11 of the roller unit 4 has a higher rotational speed than the godet roller 11 of the roller unit 3, and the heated yarn Y corresponds to the difference in rotational speed between the two godet rollers 11. It is stretched with the applied force.

  Here, generally, when the yarn Y travels, an air flow (associated flow) is generated around the yarn Y. Therefore, cold air outside the heat insulation box 13 flows into the heat insulation space 21 through the inlet side space 22 due to the accompanying flow generated by the traveling of the yarn Y passing through the slit 25a. Further, warm air in the heat insulation space 21 flows out of the heat insulation box 13 through the outlet side space 23 by the accompanying flow generated by the running of the yarn Y passing through the slit 25b.

  Further, in the present embodiment, the number of yarns Y is large (for example, about 24 to 32), and the traveling speed of the yarn Y is also somewhat fast (for example, about 4000 to 6000 m / min), so the accompanying flow is large. Further, the amount of cold air that flows into the heat insulation space 21 from the outside of the heat insulation box 13 and the amount of warm air that flows out of the heat insulation space 13 from the heat insulation space 21 also increase.

  However, in the present embodiment, since the heat exchanger 40 is arranged in the heat insulating box 13, as described above, the warm air flowing out from the heat insulating space 21 to the outlet side space 23 through the slit 26b by the accompanying flow. Part of the heat is transferred to the inlet side space 22 by the heat exchanger 40. That is, heat is transferred from the yarn outlet side to the yarn inlet side. Further, the cold air that has flowed into the entrance-side space 22 through the slit 25a is warmed by this heat and then flows into the heat retaining space 21. That is, part of the heat of the warm air that has flowed out of the heat retaining space 21 due to the accompanying flow returns to the heat retaining space 21. In other words, when warm air flows out of the heat insulation box 13, a part of the heat stays in the internal space 20 without escaping out of the heat insulation box 13. As a result, the temperature drop in the heat retaining space 21 is suppressed, and the power consumption of the heater required to heat the yarn Y to an appropriate temperature can be reduced.

  Furthermore, since the heat retaining space 21 and the inlet side space 22 are vertically partitioned by the partition wall 28 and are merely communicated with each other via the slit 26a, there is no partition wall 28, and the slit 25a in the internal space 20 and the godet roller Compared with the case where the portion between the portions 11 and 12 is a continuous space, the cold air that has flowed into the inlet side space 22 from the outside of the heat retaining box 13 is less likely to flow into the heat retaining space 21. Accordingly, the cold air that has flowed into the inlet side space 22 is sufficiently warmed by the heat transferred by the heat exchanger 40 and then flows into the heat retaining space 21, and the temperature drop of the heat retaining space 21 is further effectively suppressed. Can do.

  In addition, since the heat retaining space 21 and the outlet side space 23 are partitioned vertically by the partition wall 28 and are only communicated via the slit 26b, there is no partition wall 28, and the slit 25b of the internal space 20 Compared with the case where the part between the parts where the godet rollers 11 and 12 are arranged is a continuous space, the amount of air flowing out from the heat insulation space 21 to the outlet side space 23 is reduced. Therefore, the temperature drop of the heat retaining space 21 can be suppressed more efficiently.

  In addition, the inlet side space 22 and the outlet side space 23 are separated from each other by partition walls 29 and 30 and an isolation space 24 (heat insulating material 44), and are not in direct communication with each other. Therefore, the heat transferred from the outlet side space 23 to the inlet side space 22 by the heat exchanger 40 is unlikely to return to the outlet side space 23. Therefore, the heat of warm air that has flowed out of the heat insulation space 21 is efficiently returned to the heat insulation space 21, and the temperature decrease of the heat insulation space 21 can be further efficiently suppressed.

  Moreover, since the partition wall 28 that partitions the heat insulating space 21 from the inlet side space 22 and the outlet side space 23 is formed of a heat insulating material, the heat in the heat insulating space 21 is transferred to the inlet side space 22 and the outlet side space through the partition wall 28. 23 is prevented from being transmitted.

  Next, modified examples in which various changes are made to the present embodiment will be described. However, components having the same configuration as in the present embodiment are denoted by the same reference numerals, and description thereof is omitted as appropriate. In the following, an example in which the configuration of the roller unit 3 is changed will be described, but the same change can be made to the configuration of the roller unit 4.

  In the above-described embodiment, the internal space 20 of the heat insulation box 13 is partitioned into the heat insulation space 21, the entrance side space 22, the exit side space 23, and the isolation space 24 by the partition walls 28 to 30, but the present invention The internal space 20 is not limited to the one partitioned into these four spaces.

  In one modified example (modified example 1), as shown in FIG. 5, there is no partition wall 28, and the internal space 20 includes a region 20a corresponding to the heat retaining space 21 (see FIG. 3), an inlet side space 22, and an outlet side space. 23 and the regions 20b to 20d corresponding to the isolation space 24 (see FIG. 3) are in direct communication with each other, and the region 20b and the region 20d, and the region 20c and the region 20d In the middle, partition walls 29 and 30 similar to those described above are arranged.

  Further, in another modification (Modification 2), as shown in FIG. 6, in the modification 1, the partition walls 29 and 30 and the heat insulating material 44 are not further provided, and the above-described regions 20b and 20c are not provided. Are in direct communication with the region 20d.

  In these cases, a part of the heat of the warm air in the region 20c of the internal space 20 that flows out of the heat insulation box 13 from the internal space 20 by the accompanying flow generated in the vicinity of the slit 25b by the heat exchanger 40, Heat is transferred to the region 20b by the heat exchanger 40, that is, heat is transferred from the yarn outlet side to the yarn inlet side, and the cold air flowing into the region 20b by the accompanying flow generated in the vicinity of the slit 25a is warmed by this heat. . Thereby, when warm air flows out of the heat insulation box 13 from the internal space 20, a part of the heat does not escape to the outside of the heat insulation box 13 and remains in the internal space 20. Therefore, the temperature drop of the internal space 20 is suppressed, and the power consumption of the heater 15 necessary for heating the yarn Y to an appropriate temperature can be reduced.

  In the first and second modifications, the entire partition wall 28 is not provided and the internal space 20 is a single continuous space. However, the present invention is not limited to this. For example, in Modification 1, only a part of the partition wall 28 is provided in the internal space 20, and the internal space 20 includes a space composed of any one of the regions 20a and the regions 20b to 20d communicating with each other. It may be partitioned into any one of the entrance side space 22, the exit side space 23, and the isolation space 24. Alternatively, in Modification 2, only the partition wall 28 of the partition walls 28 to 30 is provided in the internal space 20, and the internal space 20 is partitioned by the partition wall 28 into a heat retaining space 21 and other continuous spaces. It may be.

  In the above-described embodiment, since the two partition walls 29 and 30 are provided, the isolation space 24 partitioned from these spaces 22 and 23 is provided between the entrance-side space 22 and the exit-side space 23. However, the isolation space 24 may not be provided, and only one partition wall may be provided between the inlet side space 22 and the outlet side space 23.

  In the above-described embodiment, the partition walls 28 to 30 that partition the internal space 20 into the spaces 21 to 24 are made of a heat insulating material. However, the partition walls 28 to 30 may be made of a material other than the heat insulating material.

  Even in this case, since the partition wall 28 and the slits 26a and 26b are provided, the cold air flowing into the inlet side space 22 is sufficiently generated by the heat transferred by the heat exchanger 40 as in the above-described embodiment. The amount of air that flows into the heat retaining space 21 after flowing into the heat retaining space 21 and flows out from the heat retaining space 21 to the outlet side space 23 decreases. Furthermore, by providing the partition walls 29 and 30, the heat transferred from the outlet side space 23 to the inlet side space 22 is difficult to return to the outlet side space 23. Therefore, the temperature drop of the heat retaining space 21 can be efficiently suppressed.

  In the above-described embodiment, both the godet roller 11 and the separation roller 12 are heating rollers provided with the heater 15. For example, only the godet roller 11 is a heating roller. Only one of them may be a heating roller.

  Furthermore, neither the godet roller 11 nor the separation roller 12 is a heating roller, and a separate heater may be provided. For example, in another modification (Modification 3), as shown in FIG. 7, three rollers 61 to 63 (yarn feed rollers) not provided with a heater are arranged in the heat retaining space 21, Heaters 64 and 65 are provided between the roller 61 and the roller 62 and between the roller 62 and the roller 63 so as to face the yarn Y sent between the rollers 61 to 63, respectively. ing.

  Even in this case, similarly to the above-described embodiment, the heat of the warm air flowing out from the heat retaining space 21 to the outlet side space 23 through the slit 26b is transmitted to the inlet side space 22 by the heat exchanger 40, and further, the slit The air flowing into the inlet side space 22 from the outside of the heat insulation box 13 through the heat 25a is heated by this heat and then flows into the heat insulation space 21, so that a part of the heat escaped from the heat insulation space 21 returns to the heat insulation space 21. . Therefore, the temperature drop in the heat insulation space 21 is suppressed, and the power consumption of the heaters 64 and 65 can be reduced.

  In the above example, both the inlet side space 22 and the outlet side space 23 are arranged above the heat retaining space 21, but the present invention is not limited to this. For example, in another modification (Modification 4), as shown in FIG. 8, the outlet side space 73 is arranged on the side of the heat insulation space 21 (on the right side in FIG. 8). Correspondingly, a slit 26c is formed in the partition wall 72 that separates the heat retaining space 21 and the outlet side space 73, and a slit is formed in a portion facing the slit 26c of the side wall 13f of the heat retaining box 13 facing the partition wall 72. 25c (yarn exit) is formed. Further, the connection port 13d is formed in a portion of the side wall 13c that forms the outlet side space 73.

  In addition, the rollers 61 to 63 and the heaters 64 and 65 are arranged in the heat retaining space 21 as in the third modification. The positional relationship between the slit 26a and the slit 26c is the position between the slit 26a and the slit 26b. These positions are also different from those of the modification 3 in accordance with the relationship. Specifically, the positions of the rollers 61 to 63 and the heaters 64 and 65 are arranged at positions that are shifted in the clockwise direction in FIG.

  Moreover, the isolation space 74 located between the inlet side space 22 and the outlet side space 73 extends from the upper side of the heat insulating space 21 to the side, and the plurality of heat pipes 41 of the heat exchanger 40 are in the middle. Is bent by about 90 ° and extends across the inlet side space 22, the isolation space 74 and the outlet side space 73.

  Even in this case, as described above, the heat of the warm air flowing out to the outlet side space 73 through the slit 26c is transmitted to the inlet side space 22 by the heat exchanger 40, and further, the heat insulating box passes through the slit 25a. The cold air that flows into the entrance-side space 22 from the outside of the gas 13 is warmed by this heat and then flows into the heat insulation space 21, whereby a part of the heat that escapes from the heat insulation space 21 returns to the heat insulation space 21. Therefore, a temperature drop is suppressed in the heat insulation space 21, and the power consumption of the heaters 64 and 65 can be reduced.

  In the above-described embodiment, the exhaust duct 9 is connected to the outlet side space 23, and the portion located in the outlet side space 23 of the heat exchanger 40 is connected to the slits 25 b and 26 b and the exhaust duct 9. Although it arrange | positioned between 13 d of opening | mouths, the position of the heat exchanger 40 in the exit side space 23 is not restricted to this.

  For example, in another modification (Modification 5), as shown in FIG. 9, the portion of the heat exchanger 40 that is located in the outlet side space 23 is on the side opposite to the connection port 13 d in the outlet side space 23. , Are arranged close to the slit 26b. The heat pipe 41 is bent in the middle and extends across the inlet side space 22, the outlet side space 23, and the isolation space 81 disposed therebetween. In the isolation space 81, the heat insulating material 44 is disposed over the entire area.

  In this case, the air flowing from the slit 26b toward the connection port 13d does not pass through the heat exchanger 40, but a portion located in the outlet side space 23 of the heat exchanger 40 is disposed close to the slit 26b. Therefore, the heat of warm air that has flowed from the heat retaining space 21 to the outlet side space 23 is efficiently transmitted to the inlet side space 22.

  Furthermore, the part located in the exit side space 23 of the heat exchanger 40 may be spaced apart from the slit 26b on the opposite side to the connection port 13d in the exit side space 23.

  Further, the exhaust duct 9 is not limited to being connected to the outlet side space 23, and may be connected to the heat retaining space 21, for example.

  In the above-described embodiment, the heat exchanger 40 including the heat pipe 41, the heat collecting fins 42, and the heat radiating fins 43 is provided as heat transfer means for transferring the heat in the outlet side space 23 to the inlet side space 22. However, the present invention is not limited to this, and the heat transfer means may be a known heat exchanger having a configuration different from that described above.

  In the above-described embodiment, an example in which the present invention is applied to a roller unit including a roller for stretching the yarn while heating, such as the godet roller 11, the separation roller 12, and the rollers 61 to 63 has been described. However, the present invention is not limited to this, and a yarn feed roller for feeding the yarn, a heater for heating the yarn fed by the yarn feed roller, and another heat insulation box including the yarn feed roller and the heater are provided. It is also possible to apply the present invention to a yarn heating device.

3, 4 roller unit 9 duct 11 godet roller 12 separate roller 13 heat insulation box 13d connection port 15 heater 20 internal space 21 heat insulation space 22 inlet side space 23 outlet side space 25a-25c slit 26a-26c slit 28-30 partition 40 heat exchanger 41 Heat pipe 44 Heat insulating material 61-63 Roller 64, 65 Heater 72 Bulkhead 73 Outlet side space

Claims (8)

A yarn feed roller for feeding the yarn,
A heater for heating the yarn fed by the yarn feeding roller;
A heat insulation box containing the yarn feed roller and the heater;
In the heat insulation box,
From the outside of the heat insulation box, a yarn entrance for putting a yarn into the internal space of the heat insulation box,
A yarn outlet for forming a yarn from the internal space to the outside of the heat insulation box is formed,
In the internal space, as a heat transfer means for transferring heat from the yarn outlet side to the yarn inlet side, heat exchange extending over the yarn inlet side region and the yarn outlet side region A yarn heating device characterized in that a device is provided. The internal space is defined by a partition wall,
A heat insulation space in which the yarn feed roller and the heater are disposed;
An entrance-side space provided between the heat insulation space and the yarn entrance;
It is partitioned into an outlet side space provided between the heat retaining space and the yarn outlet,
A partition wall that partitions the heat insulation space and the inlet side space is provided corresponding to the yarn inlet, and an inlet side communication passage that connects the heat insulation space and the inlet side space is formed,
A partition wall that partitions the heat retaining space and the outlet side space is provided corresponding to the yarn outlet, and an outlet side communication passage that connects the heat retaining space and the outlet side space is formed,
The yarn heating device according to claim 1, wherein the heat exchanger extends across the inlet side space and the outlet side space .   The yarn heating device according to claim 2, wherein the partition wall that partitions the internal space is made of a heat insulating material.   The yarn heating device according to claim 2 or 3, wherein an exhaust duct is connected to the outlet side space. The said heat exchanger is arrange | positioned in the area | region located in the said exit side space between the connection port with the said exit side space of the said duct, and the said exit side communicating path. The yarn heating device described in 1. The yarn heating device according to any one of claims 2 to 5, wherein the heat exchanger includes a heat pipe extending over the inlet side space and the outlet side space.   The yarn heating device according to any one of claims 1 to 6, wherein the yarn feeding roller is a heating roller provided with the heater.   The yarn heating device according to any one of claims 1 to 7, wherein the yarn feeding roller is a roller for extending the yarn.

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