KR101229347B1 - Hotwind spray nozzle of tenter machine and hotwind spray device of tenter machine using thereof - Google Patents

Abstract

PURPOSE: A hot wind spray nozzle and the hot wind spray machine of a tentering machine using the same are provided to enable effective shrinkage through a drying process and thermal treatment after dyeing. CONSTITUTION: A hot wind spray nozzle of a tentering machine comprises: a nozzle plate(110) with a plurality of nozzle holes(150), which is horizontally placed toward a fabric(F); a cover plate(120) which is separately placed from the nozzle plate in the opposite direction to the fabric; and a hot wind flow control piece(180) which controls the flow of hot wind. The hot wind flow control piece is a perpendicular piece which is perpendicular to the nozzle plate. The hot wind flow control piece comprises a vertical part and a horizontal part.

Description

Hot wind spray nozzle of tenter machine and hot wind spray device of tenter machine using the same

The present invention relates to a tenter machine, which is a kind of textile machine that performs heat treatment, shrinkage, drying, or the like, of fabrics such as woven fabrics and knitted fabrics. More specifically, the present invention relates to a fabric fabric to which hot air sprayed from a nozzle hole is conveyed. It is designed to make the processing of fabric fabric by hot air more efficient by controlling the supply amount of hot air and controlling the supply of hot air in the process of supplying hot air to the spray nozzle through hot air supply duct. It relates to a hot air spray nozzle of a fire and a hot air spray device of a tenter using the same.

In general, the processing of fabrics such as woven or knitted fabrics is carried out by a heat setting process as a pre-dyeing process, a drying process and a heat treatment as a post-dyeing process. There is a shrinkage process and the like, and a tenter machine is mainly used as an apparatus for performing such a process.

Generally, the tenter includes a chamber in which a fabric fabric passes horizontally in an upper space and a fabric fabric inlet and a fabric fabric outlet are respectively provided at the upstream and downstream ends of the fabric fabric in the conveying direction; A hot air generating duct disposed in a lower space of the chamber; A heater coupled to one side of the hot air generation duct; A hot air supply duct connected to the other side of the hot air generation duct and extending upwardly and having a plurality of hot air outlets opened toward one side of the hot air generation duct; Upper and lower hot air spray nozzles having an inlet end mounted at a hot air outlet of the hot air supply duct, the other end being closed, and a plurality of nozzle holes formed on a surface facing the fabric fabric of the nozzle body; It is installed at the lower end of the hot air supply duct and sucks the air in the chamber through the heater and the hot air generation duct and blows the air into the hot air spray nozzle through the hot air supply duct, the hot air is fabric through the nozzle hole of the hot air spray nozzle It includes a blower to be sprayed to the upper and lower surfaces of the.

The overall length of the chamber is determined according to the feed rate and the processing conditions for the processing of the fabric fabric. The chamber is configured by connecting a plurality of unit chambers having a length equal to the entire length. The fabric fabric inlet and the fabric fabric outlet are respectively provided in the upstream and downstream unit chambers installed at the upstream and downstream ends of the unit chamber.

In performing the heat setting process, the drying process, and the shrinking process by a conventional tenter, when the blower and the heater are operated while transferring the fabric fabric, the air in the chamber is sucked into the hot air generation duct through the heater by suction. The heated air is heated by heat exchange while contacting the heater to generate hot air of about 180 ° C. to 220 ° C., and the generated hot air is supplied into the hot air spray nozzle through the hot air supply duct.

The hot air supplied into the hot air spray nozzle is sprayed on the upper and lower surfaces of the fabric fabric through a plurality of nozzle holes formed in the nozzle plate of the hot air spray nozzle to perform a heat setting process, a drying process or a shrinking process.

Prior Patent Registration No. 0475663 related to the conventional tenter is a plurality of drying chambers are installed in succession, each drying chamber is separated into an upper end and a lower end, the burner is installed in the lower end and the mixing duct installed in the upper end of each In a tenter installed in the drying chamber so as to face each other in the opposite direction, an inflow passage installed to move hot air from the mixing duct to the next drying chamber is opened toward the upper end side of the burner installation position of the lower end of the drying chamber. The tenter hot air system is disclosed, which is closed to the lower end with all sides partitioned and installed to open to the lower end of the drying chamber.

The patent No. 0475663 is configured so that hot air blown from one end of the mixing duct flows toward the other end of the mixing duct and is sprayed on the upper and lower surfaces of the fabric fabric through a plurality of nozzle holes formed in the mixing duct.

However, since the mixing duct is simply formed in the form of a hole in which the nozzle hole H is perforated in the plate-shaped nozzle plate P, the hot air spraying direction W2 sprayed from the nozzle hole H is shown. This is not sprayed at right angles to the fabric fabric (F) is transported inclined in the hot wind flow direction (W1), so that the shrinking process by heat setting process, dyeing drying process or heat treatment is not smoothly performed. There is a problem.

Therefore, the present applicant (inventor) has developed a spraying direction of the hot air and the wind pressure control method and the device to the nozzle of the tenter and dryer of the Republic of Korea Patent No. 0078903 to solve the above problems.

The patent No. 0078903 is a tenter consisting of a heat exchanger, a guide duct, a nozzle formed with a nozzle hole, the upper surface of the inside of each nozzle that is fastened to the guide duct to form a plurality of inclined surface at a constant angle The rectifying plate is formed by drilling the nozzle hole to form an induction chamber and a stagnation chamber, and the nozzle hole of the rectifying plate and the nozzle hole of the nozzle are embossed to have a plane having a predetermined slope in a direction through which high temperature air passes. The hot air sprayed on the upper and lower surfaces of the fabric fabric is perpendicular to the upper and lower surfaces of the fabric fabric by facing the moving direction of the high temperature air.

However, as a result of repeating research and experiment on the tenter according to the registered patent No. 000703, hot air sprayed on the fabric fabric does not form a right angle to the fabric fabric, it is inclined in the blowing direction of the hot air, after the heat setting process and dyeing It was confirmed that the shrinkage process by the drying process and heat treatment is somewhat insufficient.

Accordingly, the present applicant (inventor) has completed the present invention as a result of repeated experiments and studies in order to solve the problem of the registered patent 0078903.

1. Korean Patent Publication No. 10-0475663 "tender machine hot air system" (registration date: 2005. 02. 28.) 2. Korean Patent Publication No. 94-006246 (Patent Registration No. 10-0078903) "Injection direction and wind pressure control and method of hot air on nozzle of tender and dryer" (Notification date: 1994. 07. 13.)

An object of the present invention is a heat setting process by making the spray angle (direction) of hot air sprayed on the upper and lower surfaces of the fabric fabric through the nozzle hole formed in the nozzle plate of the hot air spray nozzle to be perpendicular to the upper and lower surfaces of the fabric fabric. In order to provide a hot air spray nozzle and a hot air spray nozzle of a tenter using the same, the shrinkage process by drying and heat treatment after dyeing is effectively and sufficiently performed.

Another object of the present invention is to prevent the vortices in the process of blowing hot air to the hot air spray nozzles through the hot air generating duct and the hot air supply duct from the blower and to control the amount of the hot air to more efficiently process the fabric fabric by hot air. It is to provide a hot air jet of the tenter made to be made.

In order to achieve the above object, the present invention provides a nozzle plate horizontally disposed on the side facing the fabric fabric and formed with a plurality of nozzle holes, a cover plate spaced apart in the opposite direction of the fabric fabric from the nozzle plate, and the nozzle plate. Hot air inlet is formed at one end of the duct formed in a polygon by both side plates connecting the edges in the width direction of the cover plate, and the other end is closed, and hot air spraying at the upstream edge located at the upstream side of the hot air flow direction of the nozzle hole. Provided is a hot air jet nozzle comprising a hot air flow control piece for controlling the flow of hot air is bent in the opposite direction to the hot air injected from the nozzle hole in a direction perpendicular to the upper and lower surfaces of the fabric fabric.

The hot air flow control piece may be formed as a vertical piece perpendicular to the nozzle plate.

The hot air flow control piece may be composed of an inclined piece formed to be inclined toward the downstream side of the hot air flow direction.

The hot air flow control piece may include a vertical portion extending vertically at an upstream edge of the nozzle hole, and a horizontal portion bent from the tip of the vertical portion toward the closed end.

The hot air flow control piece may be composed of a curved piece bent in the direction of the downstream edge from the upstream edge of the nozzle hole.

The hot air flow control piece may be composed of a vertical portion bent at right angles to the nozzle plate at the upstream edge of the nozzle hole, and a curved portion bent from the end of the vertical portion to the downstream side of the hot air flow direction.

The front end portion of the hot air flow control piece is preferably formed in a semicircular shape.

In order to achieve the above object, the present invention, the chamber is passed through the fabric fabric horizontally in the upper space and the chamber is provided with a fabric fabric inlet and a fabric fabric outlet in the upstream and downstream end of the fabric direction; A hot air generating duct disposed in a lower space of the chamber; A heater coupled to one side of the hot air generation duct; A hot air supply duct for discharging the hot air supplied through the hot air inlet connected to the other side of the hot air generating duct to the hot air inlet side of the hot air spray nozzle through a hot air outlet having a plurality of hot air guide pieces; A nozzle plate horizontally disposed on the side facing the fabric fabric and spraying the hot air flowing into the hot air inlet to the fabric fabric, a nozzle plate having a plurality of nozzle holes formed thereon, and a cover plate and the nozzle spaced apart from each other in the opposite direction of the fabric fabric from the nozzle plate. Hot air inlet is formed at one end of the duct formed in a polygon by both side plates connecting the edges of the plate and the cover plate, and the other end is closed, and at the upstream edge located upstream of the hot air flow direction of the nozzle hole. A hot air spray nozzle configured to control a flow of hot air so that the hot air is bent in a direction opposite to the hot air spraying direction and sprayed from the nozzle hole in a direction perpendicular to the upper and lower surfaces of the fabric fabric; And a blower installed at a lower end of the hot air supply duct to suck air in the chamber through the heater and the hot air supply duct to blow air into the hot air spray nozzle through the hot air supply duct. To provide hot air spray.

The chamber includes an upstream unit chamber having a fabric fabric entry port at an upstream wall, a downstream unit chamber having a fabric fabric outlet at a downstream wall, and at least one intermediate unit disposed between the upstream unit chamber and a downstream unit chamber. It is preferable to comprise a unit chamber.

The inner space of the unit chamber is divided into an upstream space and a downstream space, and a plurality of pairs of hot air spray nozzles are disposed in the upstream space and the downstream space, respectively, and one hot air generation duct, a heater, a hot air supply duct, and a blower It is provided.

Preferably, the hot air spray nozzles, the hot air generating ducts, the heaters, the hot air supply ducts, and the blowers installed in the unit chambers are arranged in opposite directions in the upstream space and the downstream space.

The hot air supply duct is provided inside the hot air supply nozzle to prevent the hot air from causing vortex, and further comprises a hot air control means for adjusting the supply amount of hot air.

The hot air control means is formed between the hot air inlet and the hot air outlet of the hot air supply duct and the hot air upward flow passage through which the hot air flows from the blower and flows through the hot air inlet upwardly flows, and the hot air rising along the hot air upward flow passage is hot air upward direction. A hot wind bypass guide plate partitioned into a hot wind downward flow passage flowing downward from the upper end of the flow path toward the hot air spray nozzle; A hot air inversion plate provided at an upper end of the hot air supply duct to form a hot air inverting flow path for inverting hot air flowing upward along the hot air upward flow path to the hot air down flow path; A hot air distribution plate disposed close to an upper hot air outlet in the hot air downward flow passage to distribute hot air to hot air outlets of the upper and lower hot air jet nozzles; A first air volume control plate configured to adjust an opening angle of the flow path between the hot air inversion flow passage and the hot air down flow passage; And a second air volume control plate for adjusting the opening angle of the flow path between the upper and lower hot air jet nozzles in the hot air downward flow passage.

The hot wind bypass plate includes a partition plate for partitioning the hot wind upward flow passage and the hot wind down flow passage, and a hot wind guide plate connecting the lower end of the partition plate and the lower end of the lower hot air inlet.

The hot air induction plate is preferably formed in a curved shape so that vortices do not occur in a process in which hot air flowing downward along the hot air downward flow path is led to a hot air inlet of the lower hot air jet nozzle.

The hot wind induction plate is preferably formed at both ends in a curved shape so that vortices do not occur in a process in which hot wind rising upward along the hot wind upward flow passage is inverted downward into the hot wind downward flow passage.

The hot air distribution plate preferably includes an inclined plate for distributing hot air flowing downward along the hot air downward passage to the upper and lower hot air spray nozzles.

The first air volume control plate is rotatably supported at the upper end of the upper hot air outlet of the hot air supply duct, and in the downwardly rotated state, the free end is in contact with the upper end of the hot air bypass induction plate while the hot air inversion passage and the hot air are directed downward. It is preferable to be configured to close between the flow paths and to open between the hot air inversion flow path and the hot air down flow path in the up-rotated state.

The first air volume control plate is provided with a curved portion so that the hot air reversed in the hot air inversion flow passage does not form a vortex when the first air flow control plate is rotated upward to open between the hot air inversion flow passage and the hot air down flow passage.

The second air volume control plate is supported so that the support end can be rotated up and down in the middle portion of the hot air bypass plate, the free end is in contact with the lower end of the hot air distribution plate in the upward rotation state to flow downward downward flow path The hot air is blocked from being supplied to the lower side of the hot air jet nozzle, and in the downwardly rotated state, the free end flows downward from the bottom of the hot air distributor plate while being supplied downward to the hot air downward flow path to be supplied to the lower hot air jet nozzle side. It is desirable to.

Since the present invention includes a hot air flow control piece on an upstream side of the nozzle hole formed in the nozzle plate, the spray angle of the hot air sprayed on the upper and lower surfaces of the fabric fabric through the nozzle hole formed in the nozzle plate of the hot air spray nozzle. By making the orthogonal direction with respect to the upper and lower surfaces of the fabric fabric, the heat setting process, the drying process after dyeing, and the shrinkage process by heat treatment are effective and sufficient.

In addition, the present invention is provided with a hot air control means in the hot air supply duct is sprayed on the upper and lower surfaces of the fabric fabric by minimizing the generation of vortices in the process of blowing hot air from the blower through the hot air generating duct and hot air supply duct By making the spray angle of hot air perpendicular to the upper and lower surfaces of the fabric fabric, the heat setting process, the drying process after dyeing and the shrinkage process by heat treatment are effective and sufficient.

1 and 2 show a first preferred embodiment of a hot air jet nozzle according to the present invention,
1 is a perspective view and a partially enlarged view of the upper and lower hot air spray nozzles;
2 is a partially enlarged cross-sectional view of the upper and lower hot air spray nozzles;
3 is a plan view showing an example of a hot air spray device of the tenter to which the hot air spray nozzle according to the present embodiment is applied;
4 is a cross-sectional view taken along the line AA of FIG.
5 is a cross-sectional view taken along line BB of FIG.
6 is a cross-sectional view taken along line CC of FIG. 3;
7 is a partial perspective view showing an open state of the hot air control means;
8 is a partial perspective view showing a closed state of the hot air control means;
9 and 10 show a second preferred embodiment of the hot air jet nozzle according to the present invention,
9 is a perspective view and a partially enlarged view of the upper and lower hot air spray nozzles;
10 is a partially enlarged cross-sectional view of the upper and lower hot air jet nozzles;
11 and 12 show a third preferred embodiment of the hot air jet nozzle according to the present invention,
11 is a perspective view and a partially enlarged view of the upper and lower hot air spray nozzles;
12 is a partially enlarged cross-sectional view of the upper and lower hot air spray nozzles;
13 and 14 show a fourth preferred embodiment of the hot air jet nozzle according to the present invention,
13 is a perspective view and a partially enlarged view of the upper and lower hot air spray nozzles;
14 is a partially enlarged cross-sectional view of the upper and lower hot air jet nozzles;
15 and 16 show a fifth preferred embodiment of the hot air jet nozzle according to the present invention,
15 is a perspective view and a partially enlarged view of the upper and lower hot air spray nozzles;
16 is a partially enlarged cross-sectional view of the upper and lower hot air jet nozzles;
17 to 20 show a sixth preferred embodiment of the hot air jet nozzle according to the present invention,
17 is a perspective view and a partially enlarged view of the upper and lower hot air spray nozzles;
18 is a side view of the upper and lower hot air jet nozzles;
19 is a cross-sectional view taken along the line EE of FIG. 18;
20 is a cross-sectional view taken along line FF of FIG. 18;
21 is a partially enlarged cross-sectional view of a conventional hot air jet nozzle.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the hot air jet nozzle of the tenter machine according to the present invention and the hot air jet device of the tenter machine using the same.

1 and 2 show a first preferred embodiment of a hot air spray nozzle of a tenter group according to the present invention.

The hot air spray nozzle 100 of the tenter according to the present embodiment is a nozzle plate 110 arranged horizontally toward the fabric fabric (F) and the opposite direction of the fabric fabric (F) in the nozzle plate (110) The cover plate 120 spaced apart from each other, and the side plate (130, 140) connecting the two edges in the width direction of the nozzle plate 110 and the cover plate 120 is formed in a square duct shape, the The nozzle plate 110 is provided with a plurality of nozzle holes 150.

The one end in the longitudinal direction of the hot air jet nozzle 100 is composed of an open end formed with the hot air inlet 160, the other end is composed of a closed end closed by the closing member 170 to open the hot air inlet 160 of the open end. It is configured to be injected through the nozzle hole 150 while flowing through the hot air flows toward the closed end.

The internal cross-sectional area of the hot air jet nozzle 100 is configured such that the open end having the hot air inlet 160 is wide and gradually narrowed toward the closed end, thereby flowing the inside of the hot air jet nozzle 100 while flowing the nozzle hole 150. The hot air sprayed through is configured to be uniformly sprayed over the entire area from the open end to the closed end.

To this end, the side plates 130 and 140 have edges corresponding to the nozzle plate 110 horizontally formed, and edges corresponding to the cover plate 120 move from the open end to the closed end to the nozzle plate 110. The cover plate 120 is inclined toward the nozzle plate 110 while going from the open end to the closed end corresponding to the side plates 130 and 140.

The hot air spray nozzle 100 is disposed so that the nozzle plate 110 faces the top and bottom of the fabric fabric (F) on the upper and lower sides of the fabric fabric (F) conveyed in the chamber of the tenter (to be described later). It is installed so as to spray hot air on the upper and lower surfaces of the fabric fabric (F) is conveyed.

The nozzle holes 150 are arranged in the longitudinal direction and the width direction of the nozzle plate 110, and the nozzle holes 150 are arranged at a predetermined interval on a straight line and are arranged in the width direction. The ones are arranged at regular intervals in a state of being shifted laterally. This is to make the hot air spray in the nozzle hole 150 is made over the entire surface of the fabric fabric (F).

That is, when the hot air spray nozzle plate 100 is applied to the tenter, the conveying direction (D) of the fabric fabric (F) coincides with the width direction of the hot air spray nozzle plate (100), in this case arranged in the width direction When the nozzle holes 150 are arranged in a straight line, a boundary is formed between hot air sprayed from adjacent nozzle holes 150 among the nozzle holes 150 arranged in the width direction of the fabric fabric F to be transferred. Hot air spraying is not made over the entire surface of the fabric fabric (F), but the hot air spraying missing portion is generated, while the widthwise arranged nozzle holes 150 are arranged in the transverse direction, This is because the hot air sprayed from the hot air spraying can be made without overlapping hot air spraying over the entire surface of the fabric fabric (F).

The nozzle hole 150 may be formed by punching the nozzle plate 110. The nozzle hole 150 has a rectangular shape by forming the upper and downstream edges (S1, S2) and both side edges (S3, S4) in a straight line with respect to the hot air flow direction (W1) in the hot air spray nozzle (100). Although it is possible to configure, it is preferable that the upstream edge S1 and both edges S3 and S4 are formed in a straight line, and the downstream edge S2 is formed in a semicircle (see FIG. 1).

Hot air injected from the nozzle hole 150 is perpendicular to the top and bottom surfaces of the fabric fabric F at an upstream edge S1 positioned upstream of the hot air flow direction W1 of the nozzle hole 150. It is provided in the hot air flow control piece 180 for controlling the flow of hot air to be injected (see Figs. 1 and 2).

The hot air flow control piece 180 is integrally formed on the nozzle plate 110 in the process of forming the nozzle hole 150 by punching the nozzle plate 110. That is, in the process of forming the nozzle hole 150 by punching the nozzle plate 11, the downstream edge S2 and the both edges S3 and S4 of the nozzle hole 150 are completely cut, and the upstream edge is formed. S1 is punched so as not to be cut, and the hot air flow control piece 180 is directed from the upstream edge S1 of the nozzle hole 150 to the opposite direction of the hot air jetting direction W2, that is, to the fabric fabric F. It is formed to be bent in the direction.

In the present embodiment, the hot air flow control piece 180 is formed as a vertical piece 181 perpendicular to the nozzle plate 110.

At this time, the leading edge of the hot air flow control piece 180 is formed in a form corresponding to the downstream edge (S2) of the nozzle hole (150). That is, in the illustrated example, the downstream edge S2 of the nozzle hole 150 is formed in a semicircular shape, and correspondingly, the leading edge of the hot air flow control piece 180 is also formed in a semicircular shape.

Meanwhile, the downstream edge S2 of the nozzle hole 150 and the tip edge of the hot air flow control piece 180 may be formed in a straight line.

The hot air introduced into the hot air jet nozzle 100 through the hot air inlet 160 flows from the open end toward the closed end by the hot air flow control piece 180 at the position of each nozzle hole 150. Once blocked, the hot air flow control piece 180 bypasses the hot air flow control piece 180 and continues to flow toward the closed end.

Therefore, the hot air flowing through the inside of the hot air jet nozzle 100 does not flow directly toward the nozzle hole 150, but is blocked and bypassed by the hot air flow control piece 180. Since the hot air spray nozzle 100 passes through the nozzle hole 150 by the difference between the internal pressure and the external pressure, the hot air spray angle in the nozzle hole 150 is not affected by the flow rate of the hot air.

In FIG. 2, the arrows indicated by the imaginary lines show hot air that is not controlled by the hot air flow control piece 180 and does not flow toward the nozzle hole 150.

As a result, the blowing angle (direction) of the hot air sprayed from the nozzle hole 150 is perpendicular to the nozzle plate 110 and the fabric fabric (F).

Figure 3 shows an example of a hot air spray device of the tenter to which the hot air spray nozzle according to the present invention is applied.

The hot air spraying device of the tenter machine has a fabric fabric (F) passing horizontally in the upper space and a fabric fabric inlet (203) and a fabric fabric outlet (204) are provided at the upstream and downstream ends of the fabric fabric (F) in the conveying direction. A chamber 200; Hot air generation duct 300 is disposed in the lower space of the chamber 200; A heater 400 coupled to one side of the hot air generation duct 300; It extends upward from the hot air inlet 510 connected to the other side of the hot air generating duct 300 and is opened toward one side of the hot air generating duct 300 to mount the inlet end of the hot air spray nozzle 100. A hot air supply duct 500 for discharging hot air to the hot air inlet 160 of the hot air spray nozzle 100 through a hot air outlet 520 in which a plurality of hot air guide pieces 540 are formed; Hot air spray nozzle 100 for injecting the hot air flowing into the hot air inlet 160 to the fabric fabric (F); And a hot air spray nozzle installed at a lower end of the hot air supply duct 500 to suck air in the chamber 200 through the heater 400 and the hot air generation duct 300 to supply hot air nozzles through the hot air supply duct 500. It is configured to include a blower 600 for blowing into the interior of 100.

The length of the chamber 200 is determined in consideration of the transfer speed of the fabric fabric (F) and the hot air contact time required for the heat setting process, drying process and shrinking process described above, the width is taken into account the width of the fabric fabric (F) Is determined.

The chamber 200 has a length ranging from 10 m to several 10 m for the heat setting process, the drying process, and the shrinking process described above. The chamber 200 may be configured as a single chamber, but a plurality of unit chambers 200A and 200B may be used. , 200C) to connect.

The upstream unit chamber 200A is provided with an upstream wall 201, the downstream unit chamber 200C is provided with a downstream wall 202, and the upstream wall 201 and the downstream wall 202 are fabric fabrics. An entry port 203 and a fabric fabric outlet 204 are formed.

The unit chamber 200A is an upstream unit chamber positioned upstream of the fabric fabric F, and the unit chamber 200B is a downstream unit chamber positioned downstream of the fabric fabric F. The unit chamber 200C is an intermediate unit chamber connected between the upstream and downstream unit chambers 200A and 200B. In the illustrated example, only three unit chambers 200A, 200B, and 200C are illustrated, but a plurality of intermediate unit chambers 200C may be connected according to the above-described process conditions.

The internal spaces of the unit chambers 200A, 200B, and 200C are divided into upstream spaces and downstream spaces, respectively, and a plurality of hot air spray nozzles 100 in the upstream spaces and the downstream spaces (four pairs in the drawing), respectively. Each one of the hot air generating duct 300, the heater 400, the hot air supply duct 500 and the blower 600 is provided.

In addition, the hot air spray nozzle 100 and the hot air generating duct 300, the heater 400, the hot air supply duct 500, and the blower 600 installed in the unit chambers 200A, 200B, and 200C are all in the same direction. As shown in the drawing, the ones installed in the upstream space and the downstream space are preferably arranged in rotation symmetry with respect to each other in the opposite direction, that is, based on the center point of each unit chamber 200A, 200B, 200C.

The hot air generating duct 300 is disposed toward the other end at one end in the width direction of the unit chambers 200A, 200B, and 200C, and an air inlet 310 is formed at one end thereof, and a hot air outlet 320 is formed at the other end thereof. The heater 400 is installed at the air suction port 310.

The heater 400 may directly use a heat transfer heater or a boiler that generates heat itself, but uses a heat exchanger connected to an external heat source to minimize the space occupied in the unit chambers 200A, 200B, and 200C. It is desirable to.

The hot air supply duct 500 is provided with a hot air inlet 510 connected to the hot air outlet 320 of the hot air generating duct 300 at the bottom, a plurality of hot air outlets 520 opened toward one side at the top. Is provided.

The hot air inlet 510 is formed toward the hot air generating duct 300 at the lower end of the hot air supply duct 500, the hot air outlet 520 is the same as the hot air inlet 510 at the top of the hot air supply duct 500. Is formed toward the direction.

The hot air outlets 520 are provided in a plurality of upper and lower stages, respectively, plural (four in the illustrated example). At the edge of the hot air outlet 520 is provided with a nozzle fixing frame 530 for wrapping and supporting the inlet end of the hot air jet nozzle (100).

The hot air outlet 520 is provided with a plurality of hot air guide pieces 540 (three in the drawing) for guiding hot air in the longitudinal direction of the hot air jet nozzle 100.

The hot air spray nozzle for inserting the inlet end of the hot air jet nozzle 100 into the hot air outlet 520 between the upper and lower ends of the hot air guide piece 540 and the upper and lower ends of the nozzle fixing frame 530. A gap 541 is formed through which the inlet end of 100 can be inserted.

The hot air guide piece 540 may be installed in the hot air inlet 160 formed at the inlet end of the hot air spray nozzle 100.

Preferably, the blower 600 uses a centrifugal fan whose suction end is located toward one end of the hot air generation duct 300 in which the heater 400 is installed, and the discharge end is located toward the hot air supply duct 500. .

A heat setting step, a drying step, and a shrinking step of the fabric fabric F by a tenter equipped with a hot air injector according to the present invention will be described.

In the state where the heater 400 and the blower 600 are operated, the fabric fabric F enters through the fabric fabric inlet 203 of the upstream unit chamber 200A, passes through the intermediate unit chamber 200C, and is downstream. When transported to the state drawn out through the fabric fabric outlet 204 of the unit chamber (200B), the air in the unit chambers (200A, 200B, 200C) by the suction force of the blower 600 generates hot air through the air inlet (310) It is sucked into the duct 300.

In this case, since the heater 400 is installed at the air inlet 310 of the hot air generating duct 300, the air sucked into the hot air generating duct 300 is heated while passing through the heater 400 to heat the hot air generating duct 300. Hot air is generated inside.

The hot air generated by the hot air generation duct 300 is introduced into the hot air supply duct 500 through the hot air inlet 510 of the hot air supply duct 500 through the hot air discharge outlet 320 of the hot air generation duct 300.

The hot air introduced into the hot air supply duct 500 rises through the inside of the hot air supply duct 500 and is discharged to the hot air outlet 520 provided at the top of the hot air supply duct 500, and the hot air outlet 520. The hot air discharged from the air is supplied into the hot air spray nozzle 100 through the hot air inlet 160.

The hot air supplied into the hot air spray nozzle 100 is sprayed on the upper and lower surfaces of the fabric fabric F through a plurality of nozzle holes 150 formed in the nozzle plate 110 of the hot air spray nozzle 100. The heat setting process, drying process or shrinkage process of the fabric (F) is to be made.

On the other hand, inside the hot air supply duct 500 is provided with hot air control means for preventing the hot air supplied to the hot air spray nozzle 100 to cause vortex, and to adjust the amount of hot air supplied.

The hot air control means is formed between the hot air inlet 510 of the hot air supply duct 500 and the hot air outlet 520 on the upper side, and the hot air introduced through the hot air inlet 510 is blown by the blower 600. The hot air upward flow passage (P1) flowing upward and the hot air rising along the hot wind upward flow passage (P1) is partitioned into a hot air downward flow passage (P2) flowing downward from the top of the hot air upward flow passage (P1) to the hot air spray nozzle (100) side. Hot air bypass induction plate 710; Hot air inversion plate is provided at the top of the hot air supply duct 500 to form a hot air inversion passage (P3) for inverting the hot air flowing upward along the hot wind upward flow path (P1) to the hot air downward flow path (P2). 720; A hot air distribution plate 730 disposed close to the upper hot air outlet 520 in the hot air downward flow passage P2 to distribute the hot air to the hot air outlet 520 of the upper and lower hot air spray nozzles 100; A first air volume control plate 740 for controlling the opening and closing angle between the hot air inverting flow passage P3 and the hot air downward flow passage P2; And a second air volume control plate 750 for controlling the opening and closing angles of the hot air flow paths supplied to the upper and lower hot air spray nozzles 100 in the hot air downward flow passage P2 (FIGS. 6 to FIG. 6). 8).

The hot air bypass induction plate 710 is a partition plate 711 for partitioning the hot air upward flow passage (P1) and hot air down flow passage (P2), the lower end of the partition plate 711 and the lower end of the lower hot air inlet (510) It includes a hot air induction plate 712 to connect between.

The hot air induction plate 712 is formed in a curved shape so that the hot air flowing downward along the hot air downward facing oil path (P2) is guided to the hot air inlet 160 of the lower hot air jet nozzle 100 to prevent vortex from occurring. It is preferable.

The hot wind inversion plate 720 is formed to be curved at both ends so that vortices do not occur in the process of the hot air flowing upward along the hot wind upward flow path (P1) is inverted downward to the hot wind downward flow path (P2). desirable.

The hot air distribution plate 730 includes inclined plates 731 and 732 for distributing hot air flowing downward along the hot air downward flow passage P2 to the upper and lower hot air spray nozzles 100. Upper ends of the inclined plates 731 and 732 are connected by the curved connecting portion 733.

The first air volume control plate 740 is rotatably supported at the upper end of the upper hot air outlet 520 of the hot air supply duct 500, the free end is the hot air bypass plate 710 in the downward rotation state It is configured to close between the hot air inversion passage (P3) and the hot air down flow passage (P2) while in contact with the top of, and open between the hot air inversion passage (P3) and hot wind down flow passage (P2) in the upwardly rotated state. It is configured to adjust the opening angle of the hot air supplied to the upper and lower hot air spray nozzles 100.

The first air flow control plate 740 may be formed in a flat plate shape, but when the first air flow control plate 740 is rotated upward to open the space between the hot air inversion passage P3 and the hot air downward flow passage P2, It is preferable to provide the curved portion 741 so that the hot air reversed at P3) does not form a vortex.

A rotation lever 742 fixedly connected to a support end of the first air flow control plate 740 to be integrally rotated with the first air flow control plate 740 to open and operate the first air flow control plate 740, and the rotation lever ( The operating rod 743 is hingedly connected to the free end of the 742 and installed to be elevated. A long hole 744 is formed at a free end of the pivoting lever 742 in which a hinge pin connecting to the manipulation rod 743 is flowably inserted.

The second air volume control plate 750 is supported so that the support end can be rotated up and down at the stop portion of the hot air bypass plate 710, the free end is the lower end of the hot air distribution plate 730 in the upward rotation state The hot air flowing down the hot air downward flow passage (P2) while being in contact with each other is blocked from being supplied to the lower hot air spray nozzle (100). The hot air flowing downward in the downward flow path (P2) is configured to be supplied to the lower side hot air jet nozzle (100), so as to adjust the opening angle to adjust the amount of hot air supplied to the lower hot air jet nozzle (100) It is composed.

A fixed lever 751 fixedly connected to a support end of the second air flow control plate 740, and a connection lever 752 hinged to the fixed lever 751 to open and operate the second air flow control plate 750. A hinge lever 753 is hingedly connected to the coupling lever 752 and is provided to horizontally move.

In addition, the first and second air volume control plate (740, 750) may be operated using the above-described lever and rod, but can be configured to be automatically controlled by connecting each support end to a rotation driving means such as a servo motor. It may be.

When the heat setting process, the drying process, and the shrinking process of the fabric fabric are performed by the hot air spray device of the tenter of the present invention having the air volume control means described above, the first and second air volume control plates 740 and 750 are provided. By controlling the air volume of the hot air supplied to the upper and lower hot air jet nozzle 100 it is possible to perform the optimum process.

9 and 10 show a second preferred embodiment of the hot air jet nozzle according to the present invention.

The hot air jet nozzle 100 according to the present embodiment is composed of an inclined piece 182 in which the hot air flow control piece 180 is inclined to the downstream side of the hot air flow direction (W1).

In the present embodiment, since the hot air flow control piece 180 is formed of an inclined piece 182 formed to be inclined from the upstream side to the downstream side of the hot air flow direction W1, the hot air flow nozzle 100 flows inside the hot air jet nozzle 100. In addition to reducing the flow resistance to the hot air, the hot air flowing in the inside of the hot air jetting nozzle 100 is prevented from directly directed to the nozzle hole 150, and thus the hot air jetting direction W2 sprayed from the nozzle hole 150 (W2). ) Is perpendicular to the nozzle plate 110.

Since the other configuration and operation of the hot air jet nozzle according to the present embodiment are the same as those of the first embodiment described above, the same reference numerals are assigned to the same parts, and detailed description thereof will be omitted.

11 and 12 show a third preferred embodiment of the hot air jet nozzle according to the present invention.

In the hot air spray nozzle 100 according to the present embodiment, the hot air flow control piece 180 is bent to a downstream side of the hot air flow direction W1.

The hot air flow control piece 180 is vertically extended from the upstream edge S1 of the nozzle hole 150 and a vertical portion 183, and bent toward the closed end from the tip of the vertical portion 183. And a horizontal portion 184.

In the present exemplary embodiment, since the hot air flow control piece 180 includes a vertical part 183 and a horizontal part 184, the hot air flowing through the inside of the hot air jet nozzle 100 is 1 by the vertical part 183. It is blocked and bypassed by the secondary, and blocked and bypassed secondaryly by the horizontal portion 184 can more effectively suppress the hot air is directed directly to the nozzle hole 150, the hot air spraying direction (W2) injected from the nozzle hole 150 ) Is perpendicular to the nozzle plate 110.

In particular, the horizontal portion 184 can more reliably suppress the hot air flowing in the hot air jet nozzle 100 toward the nozzle hole 150, so that the hot air jet direction W2 is in the nozzle plate 110. ) And the fabric fabric (F) is more effective to make a right angle.

Since the other configuration and operation of the hot air jet nozzle according to the present embodiment are the same as those of the first embodiment described above, the same reference numerals are assigned to the same parts, and detailed description thereof will be omitted.

13 and 14 show a fourth preferred embodiment of the hot air jet nozzle according to the present invention.

In the hot air spray nozzle 100 according to the present embodiment, the hot air flow control piece 180 is formed to be bent to the downstream side of the hot air flow direction W1.

The hot air flow control piece 180 is composed of a curved piece 185 curved in the direction of the downstream edge (S2) from the upstream edge (S1) of the nozzle hole (150).

In this embodiment, the hot air flow control piece 180 is composed of a curved piece 185 can reduce the flow resistance to the hot air flowing through the hot air jet nozzle 100 and the hot air nozzle immediately The hot air spraying direction W2 sprayed from the nozzle hole 150 is suppressed toward the ball 150 to form a right angle with respect to the nozzle plate 110.

Since the other configuration and operation of the hot air jet nozzle according to the present embodiment are the same as those of the first embodiment described above, the same reference numerals are assigned to the same parts, and detailed description thereof will be omitted.

15 and 16 show a fifth preferred embodiment of the hot air jet nozzle 100 according to the present invention.

The hot air spray nozzle 100 according to the present embodiment is formed by bending the hot air flow control piece 180 perpendicular to the nozzle plate 110 and bent downward in the hot air flow direction W1.

The hot air flow control piece 180 is a vertical portion 186 bent at a right angle with respect to the nozzle plate 110 at the upstream edge S1 of the nozzle hole 150, and at the end of the vertical portion 186. It consists of the curved part 187 curved in the downstream of the hot air flow direction W1.

In the present embodiment, the hot air flow control piece 180 is composed of a vertical portion 186 and the curved portion 187, the flow of hot air by the blocking and bypass induction action by the vertical portion 186 and the curved portion 187 It can be effectively controlled, and as a result, the hot air spraying direction W2 sprayed from the nozzle hole 150 of the hot air spray nozzle 100 is perpendicular to the nozzle plate 110.

Since the other configuration and operation of the hot air jet nozzle according to the present embodiment are the same as those of the first embodiment described above, the same reference numerals are assigned to the same parts, and detailed description thereof will be omitted.

17 to 20 show a sixth preferred embodiment of the hot air spray nozzle 100 according to the present invention.

The hot air spray nozzle 100 according to the present embodiment is formed in a waveform having inclined surfaces 111 and 112 inclined symmetrically toward both sides of the nozzle plate 110, and the nozzle holes on the inclined surfaces 111 and 112. 150 and the hot air flow control piece 180 is provided.

The hot air spray nozzle 100 according to the present embodiment is adapted to restore the pressed and deformed tissues of the knitted fabric into a circular shape.

That is, since the nozzle holes 150 are formed on the inclined surfaces 111 and 112 which are inclined symmetrically toward both sides of the hot air jet nozzle 100 according to the present embodiment, the hot air jet nozzle 100 is viewed in the longitudinal direction of the hot air jet nozzle 100. When the hot air sprayed from the nozzle hole 150 is sprayed in the inclined direction with respect to the knitted fabric, as the wave is formed on the knitted fabric by the hot wind from which the knitted fabric is inclined, the tissue of the knitted fabric is survived.

In the present embodiment, the hot air flow control piece 180 is illustrated as having the same shape as that of the fifth embodiment, but any of the hot air flow control pieces of the first to fourth embodiments may be employed.

In the foregoing detailed description of the present invention, specific embodiments have been described. However, it will be apparent to those skilled in the art that various modifications can be made without departing from the scope of the present invention.

100: hot air spray nozzle 110: nozzle plate
150: nozzle hole 160: hot air inlet
170: closing member 180: hot air flow control
200: chamber 200A, 200B, 200C: unit chamber
300: hot air generation duct 400: heater
500: hot air supply duct 600: blower
710: hot air bypass induction plate 720: hot air inversion plate
730: hot air distribution plate 740: the first air flow control plate
750: second air volume control plate

Claims (28)

A nozzle plate 110 disposed horizontally toward the fabric fabric F and having a plurality of nozzle holes 150 formed therein;
A cover plate (120) spaced apart from the fabric plate (F) in the nozzle plate (110); And
Hot air inlet 160 is formed at one end of the duct formed in a polygon by both side plates (130, 140) connecting the nozzle plate 110 and the cover plate 120 in the width direction, the other end is closed, The hot wind is bent in the opposite direction of the hot air spraying direction (W2) in the upstream side edge (S1) located on the upstream side of the hot air flow direction (W1) of the nozzle hole (150) is fabric fabric And a hot air flow control piece (180) for controlling the flow of hot air so as to be sprayed in a direction perpendicular to the upper and lower surfaces of (F).
The method of claim 1,
The hot air flow nozzle of the tenter machine is characterized in that the hot air flow control piece 180 is formed of a vertical piece 181 perpendicular to the nozzle plate (110).
The method of claim 1,
The hot air flow nozzle of the tenter machine, characterized in that the hot air flow control piece 180 is composed of an inclined piece 182 inclined to the downstream side of the hot air flow direction (W1).
The method of claim 1,
The hot air flow control piece 180 is bent toward the closed end from a vertical portion 183 extending vertically from the upstream edge S1 of the nozzle hole 150 and the vertical portion 183. Hot air blowing nozzle of the tenter, characterized in that comprising a horizontal portion 184.
The method of claim 1,
The hot air flow nozzle of the tenter machine is characterized in that the hot air flow control piece 180 is composed of a curved piece 185 curved in the direction of the downstream edge (S2) from the upstream side edge (S1) of the nozzle hole (150). .
The method of claim 1,
The hot air flow control piece 180 is bent at an upstream edge S1 of the nozzle hole 150 at a right angle with respect to the nozzle plate 110 and at an end portion of the vertical portion 186. The hot-air jet nozzle of a tenter, characterized in that it consists of a curved portion 187 formed to be curved downstream of the hot air flow direction (W1).
The method of claim 1,
The hot air spray nozzle 100 is formed in a waveform having inclined surfaces (111, 112) inclined symmetrically toward both sides of the nozzle plate 110, the nozzle hole 150 and the inclined surfaces (111, 112) Hot air spray nozzle of the tenter, characterized in that the hot air flow control piece 180 is provided.
7. The method according to any one of claims 1 to 6,
Hot air jet nozzle of the tenter, characterized in that the front end of the hot air flow control piece 180 is formed in a semi-circular shape.
A chamber 200 having the fabric fabric F horizontally passed through the upper space and having a fabric fabric inlet 203 and a fabric fabric outlet 204 at the upstream and downstream ends of the fabric fabric F;
Hot air generating duct 300 is disposed in the lower space of the chamber 200;
A heater 400 coupled to one side of the hot air generation duct 300;
Hot air inlet of the hot air spray nozzle 100 through the hot air outlet 520 having a plurality of hot air guide pieces 540 for the hot air supplied through the hot air inlet 510 connected to the other side of the hot air generating duct 300 Hot air supply duct (500) for discharging hot air to the (160) side:
A nozzle plate 110 horizontally disposed on a side facing the fabric fabric F, injecting the hot air flowing into the hot air inlet 160 to the fabric fabric F, and the nozzle plate 110 having a plurality of nozzle holes 150 therein; Cover plate 120 spaced apart in the opposite direction of the fabric fabric (F) in the plate 110 and both side plates (130, 140) connecting both edges of the nozzle plate 110 and the cover plate 120 in the width direction Hot air inlet 160 is formed at one end of the duct formed in a polygon by the other end is closed, the hot air injection in the upstream side edge (S1) located upstream of the hot air flow direction (W1) of the nozzle hole 150 Hot air flow control piece 180 for controlling the flow of hot air is bent in the direction opposite to the direction (W2) so that the hot air sprayed from the nozzle hole 150 is sprayed in a direction perpendicular to the upper and lower surfaces of the fabric fabric (F) Hot air spray nozzle 100 comprising a; And
It is installed at the lower end of the hot air supply duct 500, the air in the chamber 200 is sucked through the heater 400 and the hot air generation duct 300, the hot air spray nozzle 100 through the hot air supply duct 500 Hot air blowing device of the tenter, characterized in that comprises a; blower (600) for blowing to the inside.
10. The method of claim 9,
The chamber 200,
An upstream unit chamber 200A on which an upstream wall 201 is formed with a fabric fabric inlet 203;
A downstream unit chamber 200B having a fabric fabric outlet 204 formed in the downstream wall 202; And
And at least one intermediate unit chamber (200C) disposed between the upstream unit chamber (200A) and the downstream unit chamber (200B).
The method of claim 10,
The internal spaces of the unit chambers 200A, 200B, and 200C are divided into upstream spaces and downstream spaces so that a plurality of pairs of hot air spray nozzles 100 are formed in the upstream spaces and the downstream spaces, respectively, and each of the hot air generation nozzles. Hot air spray device of the tenter, characterized in that the duct 300, the heater 400, the hot air supply duct 500 and the blower 600 is provided.
The method of claim 11,
The hot air spray nozzle 100, the hot air generating duct 300, the heater 400, the hot air supply duct 500, and the blower 600 installed in each of the unit chambers 200A, 200B, and 200C may have an upstream space. Hot air blowing device of a tenter, characterized in that arranged in the opposite direction to the downstream space.
10. The method of claim 9,
It is provided inside the hot air supply duct 500 to prevent the hot air supplied to the hot air spray nozzle 100 to cause vortex, and further comprises a hot air control means for adjusting the supply amount of hot air Hot air spray device of tenter machine.
The method of claim 13,
The hot air control means,
Hot air inflow passage (P1) formed between the hot air inlet 510 and the hot air outlet 520 of the hot air supply duct 500, and is blown by the blower 600 and flowed upward through the hot air inlet 510. ), And a hot wind bypass guide plate 710 partitioning the hot air rising along the hot wind upward flow path P1 into a hot wind downward flow path P2 flowing downward from the upper end of the hot wind upward flow path P1 to the hot air spray nozzle 100. ;
It is provided on the top of the hot air supply duct 500, the hot air inversion plate forming a hot air inversion passage (P3) for inverting the hot air flowing upward along the hot air upward flow path (P1) to the hot air downward flow path (P2) 720;
A hot air distribution plate 730 disposed close to the upper hot air outlet 520 in the hot air downward flow passage P2 to distribute hot air to the hot air outlet 520 of the upper and lower hot air spray nozzles 100;
A first air volume control plate 740 for adjusting an opening angle of the flow path between the hot air inverting flow path P3 and the hot air downward flow path P2; And
And a second air volume control plate (750) for adjusting the opening angle of the flow path between the upper and lower hot air jet nozzles (100) in the hot air downward flow passage (P2).
15. The method of claim 14,
The hot air bypass induction plate 710 is a partition plate 711 for partitioning the hot air upward flow passage (P1) and hot air down flow passage (P2), the lower end of the partition plate 711 and the lower end of the lower hot air inlet (510) Hot air injector of the tenter, characterized in that it comprises a hot air induction plate 712 for connecting between.
16. The method of claim 15,
The hot air induction plate 712 is formed in a curved shape so that the hot air flowing downward along the hot air downflow passage (P2) is guided to the hot air inlet 160 of the lower hot air jet nozzle (100). Hot air spraying device for tenter.
15. The method of claim 14,
The hot wind inversion plate 720 is formed to be curved at both ends so that hot air flowing upward along the hot wind upward flow path P1 is inverted downward into the hot wind downward flow path P2 so that vortices do not occur. Hot air spraying device for tenter.
15. The method of claim 14,
The hot air distribution plate 730 is a tenter, characterized in that it comprises a slope plate (731, 732) for distributing the hot air flowing downward along the hot air downward flow path (P2) to the upper and lower hot air spray nozzle 100 side Hot air spray device.
15. The method of claim 14,
The first air volume control plate 740 is rotatably supported at the upper end of the upper hot air outlet 520 of the hot air supply duct 500, the free end is the hot air bypass plate 710 in the downward rotation state It is configured to close between the hot air inversion passage (P3) and the hot wind down flow passage (P2) while in contact with the top of, and open between the hot wind inversion passage (P3) and hot wind down flow passage (P2) in the upwardly rotated state. Hot air spraying device for tenter.
20. The method of claim 19,
The first air flow control plate 740 is rotated upward by the first air flow control plate 740 when the hot air inverted flow path (P3) and the hot air is reversed in the hot air inverted flow path (P2) when vortex is reversed Hot air spraying device of the tenter, characterized in that the curved portion 741 is provided so as not to form.
15. The method of claim 14,
The second air volume control plate 750 is supported so that the support end can be rotated up and down at the stop portion of the hot air bypass plate 710, the free end is the lower end of the hot air distribution plate 730 in the upward rotation state The hot air flowing down the hot air downward flow passage (P2) while being in contact with each other is blocked from being supplied to the lower hot air spray nozzle (100), and in the downwardly rotated state, the free end moves away from the lower end of the hot air distribution plate (730). Hot air spraying device of the tenter characterized in that the hot air flowing down the downward flow path (P2) is configured to be supplied to the lower side hot air spray nozzle (100). 10. The method of claim 9,
The hot air flow control unit 180 is a hot air spraying device of the tenter, characterized in that formed with a vertical piece 181 perpendicular to the nozzle plate (110).
10. The method of claim 9,
The hot air flow spraying device of the tenter machine, characterized in that the hot air flow control piece 180 is composed of an inclined piece 182 inclined to the downstream side of the hot air flow direction (W1).
10. The method of claim 9,
The hot air flow control piece 180 is bent toward the closed end from a vertical portion 183 extending vertically from the upstream edge S1 of the nozzle hole 150 and the vertical portion 183. Hot air blowing device of the tenter characterized in that it comprises a horizontal portion 184.
10. The method of claim 9,
The hot air flow control unit 180 is a hot air spray device of the tenter, characterized in that the curved piece 185 is curved in the direction of the downstream edge (S2) from the upstream side edge (S1) of the nozzle hole (150) .
10. The method of claim 9,
The hot air flow control piece 180 is bent at an upstream edge S1 of the nozzle hole 150 at a right angle with respect to the nozzle plate 110 and at an end portion of the vertical portion 186. The hot-air injector of a tenter, characterized by consisting of a curved portion 187 formed to be curved downstream of the hot air flow direction (W1).
10. The method of claim 9,
The hot air spray nozzle 100 is formed in a waveform having inclined surfaces (111, 112) inclined symmetrically toward both sides of the nozzle plate 110, the nozzle hole 150 and the inclined surfaces (111, 112) Hot air flow spraying device of the tenter, characterized in that the hot air flow control piece 180 is provided.
The method according to any one of claims 9 and 22 to 27,
Hot air flow spraying device of the tenter, characterized in that the front end portion of the hot air flow control piece 180 is formed in a semi-circular shape.

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