TW201410935A - Hot wind spray nozzle of tenter and hot wind spray apparatus of tenter using the same - Google Patents

Abstract

A hot wind spray nozzle of a tenter and a hot wind spray apparatus of a tenter using the same. A hot wind flow control section is formed on the upstream edge of each nozzle-hole formed in a nozzle plate. The angle (direction) at which hot wind that is sprayed onto the upper and lower surface of a fabric through nozzle-holes in a nozzle plate of the hot wind spray nozzle becomes perpendicular to the upper and lower surfaces of the fabric, so that a heat setting process, a drying process after dyeing, or a shrinking process using heat treatment can be effectively and sufficiently carried out. A hot wind control means provided in a hot wind supplying duct minimizes a vortex from occurring in the process of blowing the hot wind to the hot wind spray nozzle so that the hot wind is perpendicularly sprayed onto the fabric.

Description

Hot air nozzle of tenter and hot air blowing device of tenter using the hot air nozzle

The present invention relates to a tenter which is a type of textile machine in which heat treatment, drying, shrinkage, etc. of fabrics (for example woven fabrics, woven materials) are carried out, more specifically, A hot air blowing device relating to a hot air nozzle of a tenter and a tenter using the hot air nozzle, wherein the hot air blown perpendicularly on the fabric by the nozzle holes can more efficiently process the fabric, thereby preventing a vortex during processing And controlling the amount of hot air supplied, the hot air is supplied to the nozzle through the hot air supply pipe during the processing.

Generally, a treatment process for fabrics (for example, woven fabrics, woven materials) includes a heat setting process performed before the dyeing process, a drying process performed after the dyeing process, and a shrinking process using heat treatment. Tenterers are commonly used as devices to implement these processes.

Such tenter machines generally include a chamber, a hot air generating tube, a heater, a hot air supply tube, an upper hot air nozzle, a lower hot air nozzle, and a blower. The chamber has an upper space through which the fabric passes horizontally. The chamber also has a fabric inlet at one end and a fabric outlet at the other end, the one end being upstream of the direction of fabric transfer and the other end being downstream of the direction of fabric transfer. The hot air generating tube is disposed in the lower space of the chamber. The heater is connected to a portion of the hot air generating tube. The hot air supply pipe is connected to another portion of the hot air generating pipe and extends upward. The upper portion of the hot air supply pipe has a plurality of hot air outlets, and the hot air outlet faces a part of the opening of the hot air generating pipe. In each of the upper hot air nozzle and the lower hot air nozzle, the passage type nozzle body has an inlet end And at the other end of the closure, the inlet end is mounted on the hot air outlet of the hot air supply pipe. Each hot air nozzle also has a plurality of nozzle holes formed on a surface of the nozzle body facing the fabric. The blower is placed at the lower end of the hot air supply pipe. The air blower sucks air in the chamber through the heater and the hot air generating tube, and blows air into the hot air nozzle through the hot air supply pipe, so that hot air can be sprayed on the upper and lower surfaces of the fabric through the nozzle holes of the hot air nozzle .

The total length of the chamber depends on the speed at which the fabric is transferred and the conditions under which the fabric is processed. The chamber is composed of a plurality of unit chambers connected together, and the length of each unit chamber is obtained by equally dividing the total length of the chamber. The fabric inlet and the fabric outlet are respectively disposed in the upper unit chamber and the lower unit chamber, and the upper unit chamber and the lower unit chamber are respectively disposed at the upstream end and the downstream end of the unit chamber.

In a heat setting process, a dyeing process, and a shrinking process using a tenter of the prior art, when the blower and the heater are operated while the fabric is being transferred, the blower draws air inside the chamber through the heater and feeds it Hot air produces tubes. The inhaled air comes into contact with the heater and is then heated by heat exchange to produce hot air having a temperature in the range of 180 °C - 220 °C. The blower blows hot air generated in this way through the hot air supply pipe to be supplied into the hot air nozzle.

The hot air supplied into the hot air nozzle is sprayed onto the upper and lower surfaces of the fabric through a plurality of nozzle holes on the nozzle plate of the hot air nozzle, thereby performing a heat setting process, a drying process, or a shrinking process.

Regarding the tenter of the prior art, Korean Patent No. 0475663 discloses a hot air system of a tenter. Here, the tenter includes a plurality of drying chambers arranged in series, each of which is divided into an upper portion and a lower portion. In the drying chamber, the lower burner and the upper mixing tube are sequentially disposed in opposite directions. In the hot air system, an introduction passage is provided to transfer the hot air discharged from the mixing tube. The introduction passage is provided at a position from the lower end of the drying chamber to the side where the burner is disposed. The introduction channel is open toward the upper end, and all sides facing the lower end are closed by partitions, and the introduction channel is open to the lower end of the next chamber.

According to the above-mentioned Korean Patent No. 0475663, when hot air blown from one end of the mixing pipe flows toward the other end of the mixing pipe, it is sprayed on the upper and lower surfaces of the fabric through a plurality of nozzle holes formed in the mixing pipe.

However, as shown in Fig. 21, since the nozzle hole H is simply formed by punching on the flat plate-shaped nozzle plate P, the ejection direction W2 of the hot air jetted through the nozzle hole H is not perpendicular to the conveyed fabric F, but is opposed to the hot air. The direction of flow W1 is inclined. Therefore, it is problematic that the heat setting process, the drying process after dyeing, or the shrinking process by heat treatment is not effectively achieved.

Therefore, in order to overcome the above problems, the applicant (inventor) has proposed a Korean Patent No. entitled "Method and Apparatus for Controlling the Direction of Injection and Blowing Pressure of High Temperature Air Applied to Nozzles of a Tenter and a Dryer" .0078903.

Korean Patent No. 0 897 903 discloses a tenter comprising a heat exchanger, a duct and a nozzle having a plurality of nozzle holes. In the tenter, the introduction chamber and the accumulation chamber are formed in respective nozzles which are fixed to the conduit and are disposed in the passage of the conduit by providing a distribution plate in the passage of the conduit. The distribution plate has a plurality of nozzle holes punched therein, and the upper surface of the distribution plate is inclined at an angle. The nozzle holes of the distribution plate and the nozzle holes of the nozzle are embossed on a plane having a predetermined inclination angle with respect to the direction in which the hot air passes, so that the nozzle holes of the distribution plate and the nozzle holes of the nozzle face the direction in which the hot air flows. Therefore, the jet direction of the hot air jet on the upper and lower surfaces of the fabric becomes perpendicular to the upper and lower surfaces of the fabric.

However, when the test and the research were repeatedly conducted on the tenter of Korean Patent No. 0897903, it was observed that the hot air was not sprayed perpendicularly on the fabric, but was inclined in the direction in which the hot air was blown, thereby making the heat setting process and the dyed process. The effect of the drying process or the shrinking process by heat treatment is not satisfactory.

Therefore, in order to overcome the problem of Korean Patent No. 0897903, the applicant (inventor) has repeated a number of tests and studies, and thus the present invention has been proposed.

Accordingly, the present invention is directed to the above problems occurring in the prior art, and the present invention will a hot air nozzle of a tenter and a hot air spraying device of a tenter using the hot air nozzle, in the hot air blowing device of the hot air nozzle and the tenter using the hot air nozzle, a nozzle passing through a nozzle plate of the hot air nozzle The angle (direction) of the hot air blown on the upper and lower surfaces of the fabric becomes perpendicular to the upper and lower surfaces of the fabric, so that the heat setting process by heat treatment and the drying process after dyeing can be performed efficiently and efficiently Or shrink the process.

There has also been proposed a hot air injection device of a tenter in which a vortex is prevented from being generated in a process of supplying hot air from a blower through a hot air generating pipe and hot air to a hot air nozzle, and the amount of hot air supplied is controlled, so that hot air can be more effectively used. Treat the fabric.

In order to achieve the above object, according to an aspect of the present invention, a hot air nozzle of a tenter having a shape of a polygonal tube is provided. The hot air nozzle includes: a nozzle plate horizontally disposed at a position facing the fabric, the nozzle plate having a plurality of nozzle holes; and a cover plate spaced from the nozzle plate in a direction opposite to the fabric And two side panels, each of the side panels being coupled to the nozzle panel and the oriented edge of the cover panel. One end of the tube has a hot air inlet and the other end of the tube is a closed end. a hot air flow control portion on an upstream edge of each of the nozzle holes, the upstream edge being upstream of a direction in which hot air flows, wherein the hot air flow control portion is curved in a direction opposite to a direction of the hot air injection, and The hot air flow control portion controls the flow of the hot air such that the hot air ejected from each of the nozzle holes is vertically sprayed on the upper or lower surface of the fabric.

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

The hot air flow control portion may be formed as an inclined portion that is inclined in a direction in which the hot air flows.

The hot air flow control portion may include a vertical portion extending perpendicularly from the upstream edge of each of the nozzle holes, and a horizontal portion from a front end of the vertical portion toward the The closed end is curved.

The hot air flow control portion may include a bent portion from each of the sprays The upstream edge of the mouth opening is curved toward the downstream edge of each of the nozzle holes.

The hot air flow control portion may include a vertical portion and a curved portion formed on the upstream edge of each of the nozzle holes and vertically bent with respect to the nozzle plate, the curved portion being formed at The end of the vertical portion is curved toward the downstream of the direction in which the hot air flows.

Preferably, the front end of the hot air flow control portion has a semicircular shape.

In order to achieve the above object, according to another aspect of the present invention, a hot air spraying device for a tenter is provided, the hot air spraying device comprising: a chamber having an upper space, a fabric inlet, and a fabric outlet, the fabric being able to pass horizontally In the upper space, the fabric inlet is at an end upstream of the direction in which the fabric is conveyed, the fabric outlet is at one end downstream of the direction in which the fabric is conveyed; a hot air generating tube is disposed in the a lower space of the chamber; a heater connected to a section of the hot air generating tube; and a hot air supply pipe to be supplied through a hot air inlet connected to another section of the hot air generating tube The hot air is discharged toward the hot air inlet of the hot air nozzle through the hot air outlet having a plurality of hot air guiding portions. The hot air nozzle sprays the hot air introduced through the hot air inlet onto the fabric. The hot air nozzle has a shape of a polygonal tube. The hot air nozzle includes: a nozzle plate horizontally disposed at a position facing the fabric, the nozzle plate having a plurality of nozzle holes; a cover plate in a direction opposite to the fabric and the nozzle The plate is spaced apart; and two side plates, each of which is coupled to the nozzle plate and the oriented edge of the cover. One end of the tube has a hot air inlet and the other end of the tube is a closed end, and each of the nozzle holes has a hot air flow control portion on an upstream edge thereof, and an upstream edge of the nozzle hole is upstream in a direction in which hot air flows . The hot air flow control portion bends in a direction opposite to a direction of the hot air injection and controls a flow of the hot air such that the hot air ejected from each of the nozzle holes is vertically sprayed on an upper surface of the fabric or On the lower surface. The hot air injection device further includes a blower disposed at a lower end of the hot air supply pipe. The blower draws air from the chamber within the chamber through the heater and the hot air a tube and blowing the air through the hot air supply tube into the hot air nozzle.

Preferably, the chamber comprises: an upstream unit chamber having a fabric inlet on the upstream wall; a downstream unit chamber having a fabric outlet on the downstream wall; and at least one intermediate unit chamber, the at least one intermediate unit An intermediate unit chamber is disposed between the upstream unit chamber and the downstream unit chamber.

The space within each of the unit cells can be equally divided into an upstream space and a downstream space. A plurality of pairs of upper hot air nozzles and lower hot air nozzles, one hot air generating tube, one heater, one hot air supply pipe, and one blower are disposed in each of the upstream space and the downstream space.

Preferably, in each of the unit chambers, the plurality of pairs of upper hot air nozzles and lower hot air nozzles, one hot air generating tube, one heater, one hot air supply tube, and one blower disposed in the upstream space are disposed The plurality of pairs of upper hot air nozzles and lower hot air nozzles, one hot air generating tube, one heater, one hot air supply tube, and one blower in the downstream space are symmetrically disposed.

The hot air injection device may further include a hot air control member inside the hot air supply pipe, the hot air control member preventing the hot air supplied to the hot air nozzle from generating a vortex and controlling the amount of the supplied hot air.

The hot air control member may include a hot wind bypass guide plate disposed between the hot air inlet and the upper hot air outlet of the hot air supply pipe. The hot air path guide plate divides a space between the hot air inlet and the upper hot air outlet into a hot air upper passage and a hot air lower passage, and hot air introduced from the air blower and introduced through the hot air inlet passes through the hot air The upper passage flows upward, and hot air flowing upward along the hot air upper passage flows downward from the upper end of the hot air upper passage toward the hot air nozzle through the hot air lower passage. The hot air control member may further include a hot air reverse guide plate and a hot air distribution plate, the hot air reverse guide plate being disposed at an upper end of the hot air supply pipe and forming a hot air reverse passage, flowing upward along the hot air upper passage The hot air passes through the hot air The reverse passage is reversed downward, and the hot air distribution plate is disposed adjacent to the upper hot air outlet in the hot air lower passage. The hot air distribution plate distributes hot air toward the hot air outlets of the upper hot air nozzle and the lower hot air nozzle. The hot air control member may further include a first air flow control panel and a second air flow control panel, wherein the first airflow control panel adjusts an opening angle of a passage portion between the hot air reverse passage and the hot air lower passage, The second air flow control panel is disposed in the hot air lower passage. The hot air nozzle includes an upper hot air nozzle and a lower hot air nozzle, and the second air flow control plate adjusts an opening angle of a passage portion between the upper hot air nozzle and the lower hot air nozzle.

The hot air path guiding plate may include: a partitioning plate dividing the hot air upper passage and the hot air lower passage; and a hot air guiding plate connecting the lower end of the partitioning plate to the Describe the lower end of the hot air inlet.

Preferably, the hot air guiding plate has a curved shape that prevents hot air flowing downward along the hot air down channel from generating a vortex when being guided toward the hot air inlet of the lower hot air nozzle.

Preferably, both ends of the hot air reverse guiding plate are curved, thereby preventing hot air flowing upward along the hot air upper passage from generating a vortex when being reversed downward toward the hot air lower passage.

Preferably, the hot air distribution plate has an inclined plate that distributes hot air flowing downward along the hot air lower passage toward the upper hot air nozzle and the lower hot air nozzle.

Preferably, the first air flow control panel has a support end rotatably supported on an upper end of the upper hot air outlet of the hot air supply pipe. When the hot air supply pipe is rotated downward, the free end of the hot air supply pipe abuts the upper end of the hot air path guide plate and is closed between the hot air reverse passage and the hot air lower passage. The hot air supply pipe opens between the hot air reverse passage and the hot air lower passage when the hot air supply pipe is rotated upward.

The first air flow control panel may have a curved portion when the hot air reverse passage and The curved portion prevents the hot air reversed in the hot air reverse passage from generating a vortex when the hot air down passages are open to each other in response to the upward rotation of the first air flow control panel.

Preferably, the supporting end of the second airflow control panel is supported on a central portion of the hot air path guiding plate such that the second airflow control panel can be rotated up and down. When the second air flow control panel is rotated upward, the free end of the second air flow control panel abuts the lower end of the hot air distribution plate, thereby preventing hot air flowing downward along the hot air lower passage from being supplied to the lower portion Hot air nozzle. When the second airflow control panel is rotated downward, the free end of the second airflow control panel is separated from the lower end of the hot air distribution panel, so that the hot air flowing downward along the hot air lower passage is supplied to the Describe the hot air nozzle.

According to an embodiment of the present invention, since the hot air flow control portion is disposed upstream of the nozzle hole on the nozzle plate, the angle (direction) of hot air ejected on the upper and lower surfaces of the fabric through the nozzle holes on the nozzle plate of the hot air nozzle The perpendicular to the upper and lower surfaces of the fabric makes it possible to efficiently and efficiently perform a heat setting process using heat treatment, a drying process after dyeing, or a shrinking process.

In addition, since the hot air control member is provided in the hot air supply pipe, the vortex which may be generated in the process of supplying the hot air blown from the blower through the hot air generating pipe and the hot air supply pipe to the hot air nozzle is minimized, and the hot air is sprayed in the place. The angles on the upper and lower surfaces of the fabric become perpendicular to the upper and lower surfaces of the fabric, so that the heat setting process using heat treatment, the drying process after dyeing, or the shrinking process can be performed efficiently and efficiently.

100‧‧‧hot air nozzle plate

110‧‧‧ Stamping nozzle plate

111, 112‧‧‧ sloped surface

120‧‧‧ cover

130, 140‧‧‧ side panels

150‧‧‧Nozzle hole

160‧‧‧hot air inlet

170‧‧‧stops

180‧‧‧hot air flow control section

181‧‧‧ vertical section

182‧‧‧ inclined section

183, 186‧‧‧ vertical

184‧‧‧ horizontal department

185, 187, 733, 741‧‧ ‧ bending

S1‧‧‧ upstream edge

S2‧‧‧ downstream side

S3, S4‧‧‧ lateral edges

W1‧‧‧The direction of hot air flow

W2‧‧‧ direction of hot air jet

D‧‧‧The direction of fabric F transmission

200‧‧‧ chamber

200A, 200B, 200C‧‧‧ unit room

201‧‧‧ upstream wall

202‧‧‧ downstream wall

203‧‧‧ fabric entrance

204‧‧‧ fabric exports

300‧‧‧hot air generating tube

310‧‧‧Air intake

320‧‧‧hot air outlet

400‧‧‧heater

500‧‧‧hot air supply pipe

510‧‧‧hot air inlet

520‧‧‧hot air outlet

530‧‧‧Nozzle holder

540‧‧‧ Hot Air Guide

541‧‧‧ gap

600‧‧‧Blowers

710‧‧‧hot air path guide board

711‧‧‧ partition board

712‧‧‧hot air guide board

720‧‧‧hot air reverse guide board

730‧‧‧Hot air distribution board

731, 732‧‧‧ sloping plate

733‧‧‧Connecting Department

740‧‧‧First air flow control panel

742‧‧‧Rotary rod

743‧‧‧Operation lever

744‧‧‧ slot

750‧‧‧Second air flow control panel

751‧‧‧Fixed rod

752‧‧‧ Connecting rod

753‧‧‧Operator

F‧‧‧fabric

H‧‧‧ nozzle hole

P‧‧‧Nozzle plate

P1‧‧‧ hot air channel

P2‧‧‧ hot air channel

P3‧‧‧ hot air reverse channel

1 and 2 show a first exemplary embodiment of a hot air nozzle according to the present invention, wherein Fig. 1 is a perspective view and a partial enlarged view of an upper hot air nozzle and a lower hot air nozzle, and Fig. 2 is a part of an upper hot air nozzle and a lower hot air nozzle Enlarged cross-sectional view; FIG. 3 is a top plan view showing an embodiment of a hot air injection device of a tenter, to which a hot air nozzle according to the present invention is applied; Figure 4 is a cross-sectional view taken along line AA of Figure 3; Figure 5 is a cross-sectional view taken along line BB of Figure 3; Figure 6 is a cross-sectional view taken along line CC of Figure 3; A partial perspective view of the control member in an open state; FIG. 8 is a partial perspective view showing the hot air control member in a closed state; and FIGS. 9 and 10 show a second exemplary embodiment of the hot air nozzle according to the present invention, wherein FIG. 9 is an upper hot air nozzle FIG. 10 is a partially enlarged cross-sectional view of the upper hot air nozzle and the lower hot air nozzle; FIG. 11 and FIG. 12 show a third exemplary embodiment of the hot air nozzle according to the present invention, wherein FIG. 11 FIG. 12 is a partially enlarged cross-sectional view of the upper hot air nozzle and the lower hot air nozzle, and FIG. 12 is a partially enlarged cross-sectional view of the upper hot air nozzle and the lower hot air nozzle; FIGS. 13 and 14 show a fourth exemplary embodiment of the hot air nozzle according to the present invention, 13 is a perspective view and a partial enlarged view of the upper hot air nozzle and the lower hot air nozzle, and FIG. 14 is a partially enlarged cross-sectional view of the upper hot air nozzle and the lower hot air nozzle; FIG. 15 and FIG. A fifth exemplary embodiment of the hot air nozzle of the present invention, wherein FIG. 15 is a perspective view and a partial enlarged view of the upper hot air nozzle and the lower hot air nozzle, and FIG. 16 is a partially enlarged cross-sectional view of the upper hot air nozzle and the lower hot air nozzle; FIG. 17 and 18 shows a sixth exemplary embodiment of a hot air nozzle according to the present invention, wherein FIG. 17 is a perspective view and a partial enlarged view of an upper hot air nozzle and a lower hot air nozzle, and FIG. 18 is a partially enlarged cross-sectional view of the upper hot air nozzle and the lower hot air nozzle; Figure 19 is a cross-sectional view taken along line EE of Figure 18; Figure 20 is a cross-sectional view taken along line FF of Figure 18; and Figure 21 is a partially enlarged cross-sectional view showing a prior art hot air nozzle.

The hot air nozzle of the tenter and the hot air blowing device of the tenter using the hot air nozzle will be described in detail below with reference to the drawings.

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

The hot air nozzle of the tenter according to the present embodiment has a tubular structure having a rectangular cross section, and the hot air nozzle includes a nozzle plate 110, a cover 120, and two side plates 130, 140, which are horizontal Positioned toward the fabric F, the cover 120 is spaced apart from the nozzle plate 110 in a direction opposite to the fabric F, and the two side plates 130, 140 connect the two widthwise edges of the nozzle plate 110 and the cover 120. The nozzle plate 110 has a plurality of nozzle holes 150.

In the hot air nozzle 100, one end in the longitudinal direction is configured to have an open end of the hot air inlet 160, and the other end is configured as a closed end closed by the stopper 170. In view of such a structure, the hot air introduced through the hot air inlet 160 at the open end is ejected through the nozzle hole 150 while flowing toward the closed end.

The hot air nozzle 100 is configured such that the inner cross-sectional area is wider at the open end having the hot air inlet 160 and gradually narrows in a direction toward the closed end, so that the hot air jetted through the nozzle hole uniformly sprays the cover when flowing into the hot air nozzle 100 from the The entire area within the range from the open end to the closed end.

For this purpose, the side plates 130 and the side plates 140 are each configured such that the edge corresponding to the nozzle plate 110 is horizontal, and the edge corresponding to the cover plate 120 is inclined from the open end to the closed end toward the nozzle plate 110. Therefore, the cap plate 120 is configured to correspond to the two side plates 130, 140, and the cap plate 120 is inclined from the open end to the closed end toward the nozzle plate 110.

The upper hot air nozzle 100 and the lower hot air nozzle 100 are respectively disposed above and below the fabric F, and the fabric F is transferred to the inside of the chamber of the tenter (the chamber will be described later) so that the two nozzle plates 110 are respectively The upper and lower surfaces of the fabric F are directed to spray hot air onto the upper and lower surfaces of the fabric F to be transferred.

The nozzle holes 150 are disposed along the longitudinal direction and the width direction of the nozzle plate 110. When the nozzle holes 150 are disposed along the length direction, the nozzle holes 150 are disposed in a straight line at equal intervals. Conversely, when the nozzle holes 150 are disposed in the width direction, the nozzle holes 150 are disposed at equal intervals but laterally staggered. The purpose of this is to ensure that hot air is sprayed from the nozzle holes 150 to cover the entire surface of the fabric F.

That is, when the hot air nozzle plate 100 is applied to the tenter, the direction D transmitted by the fabric F becomes the same as the width direction of the nozzle plate 100. Here, when the nozzle holes 150 provided in the width direction are disposed in a straight line, a boundary is formed between the hot air beams, and the hot air beams are from adjacent ones of the plurality of nozzle holes 150 disposed along the width direction of the conveyed fabric F. The spray is sprayed so that there is a portion of the fabric that is not sprayed by the hot air. Conversely, when the nozzle holes 150 disposed in the width direction are laterally shifted, the hot air beams ejected from the adjacent ones of the plurality of nozzle holes 150 disposed in the width direction overlap each other, so that hot air can be ejected throughout the fabric F On the surface, there is no part that cannot be sprayed.

The nozzle hole 150 is formed by punching the nozzle plate 110. Although each of the nozzle holes 150 may have a rectangular shape, and the upstream edge S1, the downstream edge S2, the lateral edge S3, and the lateral edge S4 are linear in the direction W1 in which the hot air flows into the hot air nozzle 100, preferably, the upstream edge S1 The lateral edges S3, S4 are rectilinear and the downstream edge S2 is semi-circular (see Figure 1).

The hot air flow control portion 180 is disposed on the upstream edge S1 of the nozzle hole 150, which is upstream of the direction W1 in which the hot air flows. The hot air flow control portion 180 controls the flow of the hot air ejected through the nozzle holes 150 such that the hot air is ejected in a direction perpendicular to the upper and lower surfaces of the fabric F (see FIGS. 1 and 2).

The hot air flow control portion 180 is integrally formed on the nozzle plate 110 in the process of forming the nozzle holes 150 by punching the nozzle plate 110. That is, in the process of forming the nozzle hole 150 by punching the nozzle plate 110, punching is performed such that the downstream edge S2 and the lateral edges S3, S4 of the nozzle hole 150 are completely cut and the upstream edge S1 is not cut. In addition, the hot air flow control portion 180 is formed on the upstream edge S1 of the nozzle hole 150 such that the hot air flow control portion 180 can be curved in a direction opposite to the direction W2 from which the hot air is ejected (i.e., in the direction toward the fabric F).

In the present embodiment, the hot air flow control portion 180 is formed to be perpendicular to the vertical portion 181 of the nozzle plate 110.

Here, the leading edge of the hot air flow control portion 180 has a downstream of the nozzle hole 150 The shape corresponding to the edge S2. In the illustrated embodiment, the downstream edge S2 of the nozzle aperture 150 is semi-circular, and the leading edge of the hot air flow control portion 180 has a corresponding semi-circular shape.

Alternatively, the downstream edge S2 of the nozzle hole 150 and the leading edge of the hot air flow control portion 180 may be linear.

When hot air introduced into the hot air nozzle 100 through the hot air inlet 160 flows from the open end toward the closed end, the hot air is blocked by the hot air flow control portion 180 in the nozzle holes 150 at the respective positions, and then flows through the hot air flow control portion 180. And continue to flow to the closed end.

Therefore, the hot air flowing into the hot air nozzle 100 does not directly flow to the nozzle hole 150, but is blocked and flows through the hot air flow control portion 180. In this process, hot air flows under pressure through the nozzle hole 150, which is the difference between the internal pressure and the external pressure of the hot air nozzle 100. Therefore, the angle at which hot air is ejected through the nozzle holes 150 is not affected by the speed at which the hot air flows.

The arrows indicated by broken lines in FIG. 2 indicate hot air controlled by the hot air flow control portion 180 and not flowing to the nozzle holes 150.

Therefore, the angle (direction) at which the hot air is ejected through the nozzle holes 150 becomes perpendicular to the nozzle plate 110 and the fabric F.

Fig. 3 is a top plan view showing an embodiment of a hot air injection device of a tenter, to which a hot air nozzle according to the present invention is applied.

The hot air blowing device of the tenter includes a chamber 200, a hot air generating tube 300, a heater 400, a hot air supply tube 500, a hot air nozzle 100, and a blower 600. The chamber 200 has an upper space through which the fabric F passes horizontally. The chamber 200 has a fabric inlet 203 at one end and a fabric outlet 204 at the other end, which is located upstream of the direction in which the fabric F is conveyed, and the other end is located downstream of the direction in which the fabric F is conveyed. Each of the hot air generating tubes 300 is disposed in a lower space of the chamber 200. Each heater 400 is connected to a section of the hot air generating tube 300. Each of the hot air supply pipes 500 extends upward at a hot air inlet 510 (see FIG. 6), and the hot air inlet 510 is connected to another section of the hot air generation pipe 300. The upper portion of the hot air supply pipe 500 has a hot air outlet 520 that faces a section of the opening of the hot air generating pipe 300, and the inlet end of each hot air nozzle 100 is disposed in the hot air outlet 520. The hot air outlet 520 has a plurality of hot air guiding portions 540. The hot air supply pipe 500 discharges hot air through the hot air outlet 520 toward the hot air inlet 160 of the hot air nozzle 100. The hot air nozzle 100 sprays hot air introduced through the hot air inlet 160 onto the fabric F. Each of the blowers 600 is disposed at each lower end of the hot air supply pipe 500. The air blower 600 draws air in the chamber 200 through the heater 400 and the hot air generation tube 300, and blows air into the hot air nozzle 100 through the hot air supply tube 500.

The length of the chamber 200 is determined in consideration of the speed of the fabric F transfer and the hot air contact time required for the heat setting process, the drying process, and the shrinking process, and the width of the chamber 200 is determined by the width of the fabric F.

The chamber 200 for the above-described processes including the heat setting process, the drying process, and the shrink process has a length ranging from ten meters to several tens of meters. Although the chamber 200 may be formed as a separate chamber, the chamber 200 is generally formed as a plurality of unit cells 200A, unit cells 200B, and unit cells 200C that are connected together.

The upstream unit cell 200A has an upstream wall 201 and the downstream unit cell 200B has a downstream wall 202. The upstream wall 201 has a fabric inlet 203 and the downstream wall 202 has a fabric outlet 204.

The unit cell 200A is an upstream unit cell located upstream of the direction in which the fabric is transferred, the unit cell 200B is a downstream unit cell located downstream of the direction in which the fabric is transferred, and the unit cell 200C is connected to the upstream unit cell 200A and the downstream unit cell 200B. Intermediate unit between the rooms. Although three unit cells 200A, 200B, 200C are shown in the illustrated embodiment, a plurality of intermediate unit cells 200C may be connected according to the above-described process conditions.

The respective internal spaces of the unit cells 200A, 200B, and 200C are equally divided into an upstream space and a downstream space. A plurality of pairs of upper hot air nozzles 100 and lower hot air nozzles 100 (four pairs as shown), one hot air generating tube 300, one heater 400, one hot air supply tube 500, and one blower are disposed in each of the upstream and downstream spaces. 600.

In addition, although the hot air nozzle 100, the hot air generating tube 300, the heater 400, the hot air supply tube 500, and the air blower 600 may all be disposed in the same direction, preferably, the components in the upstream space and the components in the downstream space are in opposite directions The arrangement, that is, the rotation of the center line of the corresponding unit cells 200A, 200B, 200C as shown in the drawing.

The hot air generating tube 300 is disposed at one end of the corresponding unit cells 200A, 200B, 200C in the width direction, and faces the other end. The hot air generating pipe 300 has an air suction port 310 at one end and a hot air discharge port 320 at the other end. The heater 400 is disposed in the air intake port 310.

Although the heater 400 can be implemented as an electric heater that generates heat, a water heater, etc., the heater 400 is preferably implemented as a heat exchanger connected to an external heat source to occupy the heater 400 in each of the unit cells 200A, 200B, and 200C. The space is minimized.

The hot air supply pipe 500 has a hot air inlet 510 at its lower end and a plurality of hot air outlets 520 at its upper end. The hot air inlet 510 is connected to the hot air discharge port 320 of the hot air generating pipe 300, and the plurality of hot air outlets 520 are open toward one side.

The hot air inlet 510 is disposed at a lower end of the hot air supply pipe 500 and faces the hot air generation pipe 300. The hot air outlet 520 is disposed at the upper end of the hot air supply pipe 500 and faces in the same direction as the hot air inlet 510.

The hot air outlet 520 is disposed above and below the plurality of hot air outlets (four hot air outlets as shown). Each of the hot air outlets 520 has a nozzle holder 530 at its edge that surrounds and supports the inlet end of the hot air nozzle 100.

The hot air outlet 520 has a plurality of hot air guiding portions 540 (three hot air guiding portions as shown) that guide the hot air along the longitudinal direction of the hot air nozzle 100.

A gap 541 is formed between the upper end and the lower end of the hot air guiding portion 540, and the inlet end of the hot air nozzle 100 can be inserted into the hot air outlet 520 through the gap 541.

The hot air guiding portion 540 may be disposed in the hot air inlet 160, and the hot air inlet 160 is formed at the inlet end of the hot air nozzle 100.

Preferably, the air blower 600 is implemented as a centrifugal fan having a suction end provided to one end of the hot air generation pipe 300 on which the heater 400 is disposed and a discharge end disposed toward the hot air supply pipe 500.

A heat setting process, a drying process, and a shrinking process performed on the fabric F using a tenter having the hot air blowing device of the present invention will be described below.

When the heater 400 and the blower 600 are in operation, the fabric F is introduced through the fabric inlet 203 of the upstream unit chamber 200A, passes through the intermediate unit chamber 200C, and is discharged through the fabric outlet 204 of the downstream unit chamber 200B. In this state, the air in the unit chamber 200A, the unit chamber 200B, and the unit chamber 200C is sucked through the air suction port 310 into the hot air generation tube 300 by the suction force of the blower 600.

Here, since the respective heaters 400 are disposed in the respective air intake ports 310 of the hot air generating tube 300, the air sucked into the hot air generating tubes 300 is heated while passing through the heaters 400, thereby generating hot air in the hot air generating tubes 300.

The hot air generated in the hot air generating pipe 300 passes through the hot air discharge port 320 of the hot air generating pipe 300 through the hot air inlet 510 of the hot air supply pipe 500 to be introduced into the hot air supply pipe 500.

The hot air introduced into the hot air supply pipe 500 rises through the inside of the hot air supply pipe 500 and is discharged through the hot air outlet 520 at the upper end of the hot air supply pipe 500. The hot air discharged through the hot air outlet 520 is supplied to the hot air nozzle 100 through the hot air outlet 160.

The hot air supplied to the hot air nozzle 100 is sprayed on the upper and lower surfaces of the fabric F through a plurality of nozzle holes 150 formed on the nozzle plate 110 of the hot air nozzle 100. Therefore, the fabric F can be subjected to a heat setting process, a drying process, or a shrinking process.

In addition, a hot air control member is disposed in the hot air supply pipe 500 to prevent the hot air supplied to the hot air nozzle 100 from generating a vortex and to control the amount of hot air supply.

The hot air control member includes a hot air path guide plate 710, a hot air reverse guide plate 720, a hot air distribution plate 730, a first air flow control plate 740, and a second air flow control plate 750 (see FIGS. 6-8). The hot air path guide plate 710 is disposed in the hot air supply pipe 500 Between the port 510 and the upper hot air outlet 520, and dividing the space between the hot air inlet 510 and the upper hot air outlet 520 into the hot air upper passage P1 and the hot air lower passage P2, the hot air blown from the blower 600 and introduced through the hot air inlet 510 passes. The hot air upper passage P1 flows upward, and the hot air flowing upward along the hot air upper passage P1 flows downward from the upper end of the hot air upper passage P1 toward the hot air nozzle 100 through the hot air lower passage P2. The hot air reverse guide plate 720 is disposed at the upper end of the hot air supply pipe 500, and forms a hot air reverse passage P3, and the hot air flowing upward along the hot air upper passage P1 is reversed downward through the hot air reverse passage P3. The hot air distribution plate 730 is disposed adjacent to the upper hot air outlet 520 in the hot air lower passage P2, and distributes hot air toward the hot air outlet 100 of the upper hot air nozzle 100 and the lower hot air nozzle 100. The first air flow control panel 740 is opened and closed between the hot air reverse passage P3 and the hot air lower passage P2, and the opening angle is adjusted. The second air flow control panel 750 is disposed in the hot air lower passage P2. The second air flow control panel 750 opens and closes the passage of the hot air and adjusts the opening angle, which is supplied toward the upper hot air nozzle 100 and the lower hot air nozzle 100.

The hot air path guide plate 710 includes a partition plate 711 that divides the hot air upper passage P1 and a hot air lower passage P2, and a hot air guide plate 712 that connects the lower end of the partition plate 711 to the lower end of the lower hot air inlet 510. .

Preferably, the hot air guiding plate 712 has a curved shape that prevents hot air flowing downward along the hot air lower passage P2 from generating a vortex when being guided to the hot air inlet 160 of the down hot air nozzle 100.

Preferably, both ends of the hot air reverse guiding plate 720 are curved, thereby preventing the hot air flowing upward along the hot air upper passage P1 from generating a vortex when being reversely flowed downward toward the hot air lower passage P2.

The hot air distribution plate 730 includes a slanting plate 731 and a slanting plate 732 that distributes hot air flowing toward the upper hot air nozzle 100 and the lower hot air nozzle 100 along the hot air lower passage P2. The upper ends of the inclined plate 731 and the inclined plate 732 are connected by a curved connecting portion 733.

The first air flow control panel 740 has a support end that is rotatably supported by heat The upper end of the upper hot air outlet 520 of the wind supply pipe 500. When the hot air supply pipe 500 is rotated downward, the free end of the hot air supply pipe 500 abuts the upper end of the hot air path guide plate 710, thereby being closed between the hot air reverse passage P3 and the hot air lower passage P2. When the hot air supply pipe 500 is rotated upward, the hot air supply pipe 500 is opened between the hot air reverse passage P3 and the hot air lower passage P2. Therefore, adjusting the angle at which the hot air supply pipe 500 is opened can control the amount of hot air supplied to the upper hot air nozzle 100 and the lower hot air nozzle 100.

Although the first air flow control panel 740 may have a flat plate shape, preferably, the first air flow control panel 740 has a curved portion 741, and the hot air reverse passage P3 and the hot air lower passage P2 are responsive to the upward rotation of the first airflow control panel 740. When bent apart from each other, the curved portion 741 can prevent the hot air generated in the reverse direction of the hot air reverse passage P3 from generating a vortex.

The rotating lever 742 and the operating lever 743 are provided for controlling an opening/closing operation of the first airflow control panel 740. The rotating lever 742 is fixedly coupled to the support end of the first airflow control panel 740 and rotates together with the first airflow control panel 740. The operating lever 743 is hinged to the free end of the rotating lever 742 such that the operating lever 734 can move up and down. The free end of the rotating lever 742 also has a slot 744 into which the hinge pin connected to the operating lever 743 is movably inserted.

The support end of the second air flow control plate 750 is supported on the middle of the hot air path guide plate 710 such that the second air flow control plate 750 can be rotated up and down. When the second air flow control plate 750 is rotated upward, its free end abuts the lower end of the hot air distribution plate 730, thereby preventing hot air flowing downward along the hot air lower passage P2 from being supplied to the lower hot air nozzle 100. When the second air flow control panel 750 is rotated downward, its free end is disengaged from the lower end of the hot air distribution plate 730, so that hot air flowing downward along the hot air lower passage P2 can be supplied to the lower hot air nozzle 100. The amount of hot air supplied to the lower hot air nozzle 100 can be controlled by adjusting the opening angle of the second air flow control panel 750.

The fixing rod 751, the connecting rod 752, and the operating rod 753 are provided for controlling the opening/closing operation of the second air flow control panel 750. The fixing rod 751 is fixedly coupled to the supporting end of the second air flow control board 750. The connecting rod 752 is hinged to the fixing rod 751. The operating lever 753 is hinged to the connecting rod 752 such that the operating lever 753 can move horizontally.

Although the first air flow control plate 740 and the second air flow control plate 750 can be operated using the above-described lever and shaft, the support ends of the first air flow control plate 740 and the second air flow control plate 750 themselves can also be connected to, for example, the rotation of the servo. The drive member enables automatic control of the first air flow control panel 740 and the second air flow control panel 750.

When the heat setting process, the drying process, and the shrinking process are performed on the fabric using the hot air blowing device of the tenter of the present invention having the above-described gas flow control member, it can be controlled by using the first air flow control plate 740 and the second air flow control plate 750. The amount of hot air supplied to the upper hot air nozzle 100 and the lower hot air nozzle 100 is performed to perform each process at an optimum level.

9 and 10 show a second exemplary embodiment of a hot air nozzle 100 in accordance with the present invention.

In the hot air nozzle 100 according to the present embodiment, the hot air flow control unit 180 has an inclined portion 182 that is inclined in the direction W1 in which the hot air flows.

In the present embodiment, the hot air flow control unit 180 is implemented as an inclined portion 182 which is inclined from the upstream to the downstream in the direction W1 in which the hot air flows. Therefore, the flow resistance of the hot air flowing in the hot air nozzle 100 can be reduced. It is also possible to prevent the hot air flowing in the hot air nozzle 100 from flowing directly to the nozzle hole 150, so that the direction W2 of the hot air ejected from the nozzle hole 150 becomes perpendicular to the nozzle plate 110.

Other members and functions of the hot air nozzle of the present embodiment are substantially the same as those of the hot air nozzle of the first embodiment described above. Therefore, the same reference numerals and signs are used to denote the same or similar parts, and the description thereof will be omitted.

11 and 12 show a third example embodiment of a hot air nozzle 100 in accordance with the present invention.

In the hot air nozzle 100 according to the present embodiment, the hot air flow control unit 180 is curved toward the downstream of the direction W1 in which the hot air flows.

The hot air flow control portion 180 includes a vertical portion 183 that extends vertically from the upstream edge S1 of each nozzle hole 150 and a horizontal portion 184 that is vertical from the horizontal portion 184 The front end of the portion 183 is curved toward the closed end.

In the present embodiment, since the hot air flow control portion 180 includes the vertical portion 183 and the horizontal portion 184, first, the hot air flowing in the hot air nozzle 100 is blocked by the vertical portion 183 or causes the hot air flowing in the hot air nozzle 100 to surround the vertical The straight portion 183 passes through, and then is blocked by the horizontal portion 184 or causes hot air flowing in the hot air nozzle 100 to pass around the horizontal portion 184. Therefore, it is possible to more effectively prevent the hot air from flowing directly to the nozzle hole 150 such that the direction W2 in which the hot air is ejected from the nozzle hole 150 is perpendicular to the nozzle plate 110.

In particular, since the horizontal portion 184 can more reliably prevent the hot air flowing in the hot air nozzle 100 from flowing to the nozzle hole 150, it can be more effectively acted to set the direction W2 in which the hot air is ejected to be perpendicular to the nozzle plate 110 and the fabric F.

Other members and functions of the hot air nozzle of the present embodiment are substantially the same as those of the hot air nozzle of the first embodiment described above. Therefore, the same reference numerals and signs are used to denote the same or similar parts, and the description thereof will be omitted.

Figures 13 and 14 show a fourth example embodiment of a hot air nozzle 100 in accordance with the present invention.

In the hot air nozzle 100 according to the present embodiment, the hot air flow control unit 180 is curved toward the downstream of the direction W1 in which the hot air flows.

The hot air flow control portion 180 is implemented as a curved portion 185 that is bent from the upstream edge S1 to the downstream edge S2 of each nozzle hole 150.

In the present embodiment, since the hot air flow control unit 180 is implemented as the curved portion 185, the flow resistance of the hot air flowing in the hot air nozzle 100 can be reduced. It is also possible to prevent the hot air from flowing directly to the nozzle hole 150 such that the direction W2 of the hot air ejected from the nozzle hole 150 becomes perpendicular to the nozzle plate 110.

Other members and functions of the hot air nozzle of the present embodiment are substantially the same as those of the hot air nozzle of the first embodiment described above. Therefore, the same reference numerals and signs are used to denote the same or similar parts, and the description thereof will be omitted.

15 and 16 show a fifth exemplary embodiment of a hot air nozzle according to the present invention. formula.

In the hot air nozzle 100 according to the present embodiment, the hot air flow control portion 180 is vertically curved with respect to the nozzle plate 110 and curved toward the downstream of the direction W1 in which the hot air flows.

The hot air flow control portion 180 includes a vertical portion 186 formed on the upstream edge S1 of each nozzle hole 150 and vertically curved with respect to the nozzle plate 110, and a curved portion 187 formed at the end of the vertical portion 186 It is curved upward and in the direction of the direction W1 of the hot air flow.

In the present embodiment, since the hot air flow control portion 180 includes the vertical portion 186 and the curved portion 187, the flow of the hot air can be more effectively controlled according to the blocking action and the splitting action of the vertical portion 186 and the curved portion 187. Therefore, the direction W2 in which the hot air is ejected from the nozzle holes 150 of the hot air nozzle 100 becomes perpendicular to the nozzle plate 110.

Other members and functions of the hot air nozzle of the present embodiment are substantially the same as those of the hot air nozzle of the first embodiment described above. Therefore, the same reference numerals and signs are used to denote the same or similar parts, and the description thereof will be omitted.

17 and 18 show a sixth example embodiment of a hot air nozzle 100 in accordance with the present invention.

The hot air nozzle 100 according to the present embodiment has a corrugated shape including an inclined surface 111 and an inclined surface 112 which are symmetrically inclined in the lateral direction. Further, the nozzle hole 150 and the hot air flow control portion 180 are formed on the inclined surface 111 and the inclined surface 112.

The hot air nozzle 100 according to the present embodiment is configured to restore the texture of the pressed and deformed fabric to an original shape.

In other words, since the inclined surface 111 and the inclined surface 112 which are inclined symmetrically in the lateral direction of the hot air nozzle 100 of the present embodiment have the nozzle holes 150, the hot air ejected from the nozzle holes 150 when viewed along the longitudinal direction of the hot air nozzle 100 Sprayed on the woven fabric or woven material in an oblique direction. Therefore, the hot air ejected from the nozzle holes 150 at a certain inclination forms corrugations on the woven fabric or the woven material, thereby restoring the texture of the woven fabric or the woven material.

Although the hot air flow control unit 180 of the present embodiment is illustrated as having the same shape as the fifth embodiment described above, any of the hot air flow control units according to the first to fourth embodiments may be employed.

Although the exemplary embodiments of the present invention have been described for illustrative purposes, those skilled in the art can make various modifications, additions and substitutions without departing from the scope and spirit of the invention as disclosed in the appended claims. .

100‧‧‧hot air nozzle plate

110‧‧‧ Stamping nozzle plate

120‧‧‧ cover

130, 140‧‧‧ side panels

150‧‧‧Nozzle hole

160‧‧‧hot air inlet

170‧‧‧stops

180‧‧‧hot air flow control section

S1‧‧‧ upstream edge

S2‧‧‧ downstream side

S3, S4‧‧‧ lateral edges

W1‧‧‧The direction of hot air flow

D‧‧‧The direction of fabric F transmission

Claims (28)

A hot air nozzle of a tenter, the hot air nozzle having a polygonal tube shape, the hot air nozzle comprising: a nozzle plate horizontally disposed at a position facing the fabric, the nozzle plate having a plurality of nozzle holes; a plate, the cover plate being spaced from the nozzle plate in a direction opposite the fabric; and two side plates, each of the side plates being coupled to the nozzle plate and an oriented edge of the cover plate, wherein One end of the tube has a hot air inlet and the other end of the tube is a closed end, and each of the nozzle holes has a hot air flow control portion on an upstream edge thereof, the upstream edge of the nozzle hole being upstream of a direction in which hot air flows, wherein The hot air flow control portion bends in a direction opposite to a direction of the hot air injection and controls a flow of the hot air such that the hot air ejected from each of the nozzle holes is vertically sprayed on an upper surface of the fabric Or on the lower surface. The hot air nozzle according to claim 1, wherein the hot air flow control portion includes a vertical portion perpendicular to the nozzle plate. The hot air nozzle according to claim 1, wherein the hot air flow control portion includes an inclined portion that is inclined in a direction in which the hot air flows. The hot air nozzle according to claim 1, wherein the hot air flow control portion includes a vertical portion and a horizontal portion, the vertical portion extending vertically from the upstream edge of each of the nozzle holes The horizontal portion is curved from a front end of the vertical portion toward the closed end. The hot air nozzle according to claim 1, wherein the hot air flow control portion includes a curved portion from the upstream edge of each of the nozzle holes to a downstream edge of each of the nozzle holes bending. The hot air nozzle according to claim 1, wherein the hot air flow control portion includes: a vertical portion formed on the upstream edge of each of the nozzle holes and opposite to The nozzle plate is vertically bent; and a curved portion formed on an end of the vertical portion and curved toward a downstream direction of the flow of the hot air. The hot air nozzle according to claim 1, wherein the hot air nozzle has a shape of a corrugation including an inclined surface that is symmetrically inclined in a lateral direction, wherein the nozzle hole and the hot air flow control portion are formed in the Inclined surface. The hot air nozzle according to any one of claims 1 to 6, wherein the front end of the hot air flow control unit has a semicircular shape. A hot air spraying device for a tenter, the hot air spraying device comprising: a chamber having an upper space, a fabric inlet and a fabric outlet, the fabric being able to pass horizontally through the upper space, the fabric inlet transferring the fabric An upstream end of the direction, the fabric outlet is at one end downstream of the direction in which the fabric is conveyed; a hot air generating tube is disposed in a lower space of the chamber; a heater, the heater a section connected to the hot air generating tube; a hot air supply pipe that supplies hot air supplied through a hot air inlet connected to another section of the hot air generating pipe through a hot air outlet having a plurality of hot air guiding portions toward the hot air nozzle a hot air inlet discharge; wherein the hot air nozzle sprays the hot air introduced through the hot air inlet on the fabric, the hot air nozzle has a polygonal tube shape, and the hot air nozzle includes: a nozzle plate, The nozzle plate is horizontally disposed at a position facing the fabric, the nozzle plate having a plurality of nozzle holes; a cover plate, the cover plate A direction opposite to said web spaced from the nozzle plate; and Two side panels, each of the side panels being coupled to the nozzle panel and an oriented edge of the cover panel, wherein one end of the tube has a hot air inlet and the other end of the tube is a closed end, and each of the a hot air flow control portion having an upstream edge of the nozzle hole upstream of a direction in which the hot air flows, wherein the hot air flow control portion is curved in a direction opposite to a direction of the hot air injection and controls the The flow of hot air such that the hot air ejected from each of the nozzle holes is vertically sprayed on an upper surface or a lower surface of the fabric; a blower is disposed at a lower end of the hot air supply pipe, wherein The blower draws air in the chamber through the heater and the hot air generating tube, and blows the air through the hot air supply tube into the hot air nozzle. The hot air spraying device of claim 9, wherein the chamber comprises: an upstream unit chamber having a fabric inlet on the upstream wall; a downstream unit chamber, the downstream unit chamber being on the downstream wall Having a fabric outlet; and at least one intermediate unit chamber disposed between the upstream unit chamber and the downstream unit chamber. The hot air injection device of claim 10, wherein a space in each of the unit cells is equally divided into an upstream space and a downstream space, each of the upstream space and the downstream space A plurality of pairs of upper hot air nozzles and lower hot air nozzles, a hot air generating tube, a heater, a hot air supply pipe, and a blower are disposed. The hot air blowing device according to claim 11, wherein in each of the unit chambers, the plurality of pairs of upper hot air nozzles and lower hot air nozzles, a hot air generating tube disposed in the upstream space, a heater, a hot air supply pipe and a blower are symmetrically arranged with the plurality of pairs of upper hot air nozzles and lower hot air nozzles, a hot air generating pipe, a heater, a hot air supply pipe and a blower disposed in the downstream space . A hot air injection device according to claim 9, wherein the hot air injection device further includes a hot air control member in the hot air supply pipe, the hot air control member preventing the hot air supplied to the hot air nozzle from generating a vortex and The amount of the hot air supplied is controlled. The hot air blowing device of claim 13, wherein the hot air control member comprises: a hot air path guiding plate disposed at the hot air inlet and the upper hot air outlet of the hot air supply pipe The hot air path guiding plate divides a space between the hot air inlet and the upper hot air outlet into a hot air upper passage and a hot air lower passage, and the hot air introduced from the air blower and introduced through the hot air inlet Flowing upward through the hot air upper passage, hot air flowing upward along the hot air upper passage flows downward from the upper end of the hot air upper passage toward the hot air nozzle through the hot air lower passage: a hot air reverse guide plate, a hot air reverse guiding plate is disposed at an upper end of the hot air supply pipe and forms a hot air reverse passage, and the hot air flowing upward along the hot air upper passage is reversed downward through the hot air reverse passage; the hot air distribution plate, The hot air distribution plate is disposed adjacent to the upper hot air outlet in the hot air down channel, wherein the hot air distribution plate faces the upper hot air a hot air outlet of the nozzle and the lower hot air nozzle; a first air flow control panel, the first air flow control panel adjusting an opening angle of a channel portion between the hot air reverse passage and the hot air lower passage; And a second airflow control panel disposed in the hot air down channel, wherein the hot air nozzle includes an upper hot air nozzle and a lower hot air nozzle, and the second air flow control panel is disposed at the upper hot air The opening angle of the passage portion between the nozzle and the lower hot air nozzle. The hot air blowing device of claim 14, wherein the hot air path guiding plate comprises: a dividing plate dividing the hot air upper passage and the hot air lower passage; And a hot air guiding plate connecting the lower end of the dividing plate to the lower end of the lower hot air inlet. The hot air blowing device of claim 15, wherein the hot air guiding plate has a curved shape that prevents hot air flowing downward along the hot air lower passage from being directed toward the lower hot air The hot air inlet of the nozzle guides a vortex when it is guided. The hot air blowing device of claim 14, wherein both ends of the hot air reverse guiding plate are curved, thereby preventing hot air flowing upward along the hot air upper passage from being directed toward the hot air. A vortex occurs when the channel is inverted downward. The hot air spraying device of claim 14, wherein the hot air distribution plate comprises a sloping plate that is distributed downward along the hot air lower passage toward the upper hot air nozzle and the lower hot air nozzle The hot air flowing. The hot air spraying device of claim 14, wherein the first air flow control plate has a support end rotatably supported on an upper end of the upper hot air outlet of the hot air supply pipe, Wherein, when the hot air supply pipe is rotated downward, a free end of the hot air supply pipe abuts an upper end of the hot air path guide plate and is closed between the hot air reverse passage and the hot air lower passage, When the hot air supply pipe is rotated upward, the hot air supply pipe is opened between the hot air reverse passage and the hot air lower passage. The hot air spraying device of claim 19, wherein the first air flow control panel has a curved portion, and the hot air reverse passage and the hot air lower passage are responsive to the first air flow control panel The curved portion prevents hot air that is reversed in the hot air reverse passage from generating a vortex when rotated upward to open to each other. The hot air spraying device of claim 14, wherein the supporting end of the second air flow control plate is supported on a middle portion of the hot air path guiding plate, so that the second air flow control plate can be rotated up and down. Wherein, when the second When the airflow control panel is rotated upward, the free end of the second airflow control panel abuts the lower end of the hot air distribution plate, thereby preventing hot air flowing downward along the hot air lower passage from being supplied to the lower hot air nozzle. When the second airflow control panel rotates downward, the free end of the second airflow control panel is separated from the lower end of the hot air distribution panel, so that hot air flowing downward along the hot air lower passage is supplied to the lower portion. Hot air nozzle. The hot air blowing device of claim 9, wherein the hot air flow control portion includes a vertical portion that is perpendicular to the nozzle plate. The hot air injection device according to claim 9, wherein the hot air flow control portion includes an inclined portion that is inclined in a direction in which the hot air flows. The hot air blowing device of claim 9, wherein the hot air flow control portion includes a vertical portion and a horizontal portion, the vertical portion extending vertically from an upstream edge of each of the nozzle holes, The horizontal portion is curved from the front end of the vertical portion toward the closed end. The hot air blowing device according to claim 9, wherein the hot air flow control portion includes a bent portion that is bent from the upstream edge of each of the nozzle holes toward a downstream edge of each of the nozzle holes . The hot air blowing device of claim 9, wherein the hot air flow control portion includes a vertical portion and a curved portion formed on the upstream edge of each of the nozzle holes and opposite to The nozzle plate is vertically bent, and the bent portion is formed on the end of the vertical portion and curved toward the downstream in the direction in which the hot air flows. The hot air blowing device according to claim 9, wherein the hot air nozzle has a corrugated shape including an inclined surface that is symmetrically inclined in a lateral direction, wherein the nozzle hole and the hot air flow control portion are formed in the Inclined surface. The hot air injection device according to any one of claims 9 to 22, wherein the front end of the hot air flow control unit has a semicircular shape.