KR102505257B1 - Damper device for hot air distribution of tenter machine - Google Patents

Abstract

The present invention relates to a damper device for distributing hot air to an upper part and a lower part for a tenter machine, which has first and second dampers rotatably disposed inside a fan casing to distribute hot air to upper and lower injection ducts. The damper device of the present invention has an improved structure such that the impact of hot air on the inside of the fan casing is minimized and a curvature portion with a rounded curvature is formed to guide hot air without pressure loss to allow the air volume of the hot air distributed to the upper and lower injection ducts to be individually and precisely controlled by using changes in an air volume distribution ratio and the distribution ratio of hot air injected onto the top and bottom of the fabric can be easily adjusted, considering conditions such as the type of fabric and a shrinkage rate. According to the present invention, a damper shaft and a rotational shaft are used to finely adjust and precisely control the rotating angles of the first and second dampers.

Description

Upper and lower hot air distribution damper device for tenter {DAMPER DEVICE FOR HOT AIR DISTRIBUTION OF TENTER MACHINE}

The present invention relates to an upper and lower hot air distribution damper device for a tenter. In particular, in the process of distributing hot air in an existing fan casing, due to the structural characteristics of a right-angled distribution duct, vortices are generated, resulting in deviation in hot air distribution, resulting in uniform drying of the product However, in the present invention, the first and second dampers are rotatably disposed inside the fan casing and can distribute hot air to the upper and lower spray ducts, respectively. The air volume of the hot air distributed to the upper and lower spray ducts by using the change in the air volume distribution ratio by forming a curvature portion with a rounded curvature so that the hot air can be guided without pressure loss by minimizing the collision of the hot air inside the fan casing. In addition to enabling precise control of each individually, it is possible to conveniently adjust the distribution ratio of hot air sprayed to the upper and lower sides of the fiber fabric in consideration of conditions such as the type of fabric and shrinkage rate, and the first and second It relates to an upper and lower hot air distribution damper device for a tenter whose structure is improved so that the rotation angle of the damper can be finely adjusted and precisely controlled.

In general, in the processing of textile fabrics such as woven or knitted fabrics, a heat setting process performed as a pre-dyeing treatment process, a drying process performed as a post-dyeing treatment process, and heat treatment There is a shrinkage process, etc., and a tenter machine is mainly used as a device for performing this process.

A conventional tenter machine includes a chamber in which fabric fabric passes horizontally in an upper space and is provided with a fabric entrance port and a fabric fabric outlet port at the upstream and downstream ends of the transport direction of the fabric fabric, respectively; a hot air generating duct disposed in a lower space of the chamber; a heater coupled to one side of the hot air generating duct; a hot air supply duct connected to the other side of the hot air generating duct, extending upward, and having a plurality of hot air outlets opening toward one side of the hot air generating duct; a channel-type nozzle body having an inlet end attached to the hot air outlet of the hot air supply duct and having the other end closed, and upper and lower hot air blowing nozzles coupled to a surface of the nozzle body facing the fabric fabric and having a plurality of nozzle holes; It is installed at the bottom of the hot air supply duct, sucks air in the chamber through the heater and the hot air generating duct, and blows it into the hot air spray nozzle through the hot air supply duct, so that the hot air is blown through the nozzle hole of the hot air spray nozzle to the fabric fabric. It is configured to include a blower so that it is sprayed on the upper and lower surfaces of the.

The overall length of the chamber is determined in response to the conveying speed and processing conditions in the treatment of the fabric fabric. The chamber is configured by connecting a plurality of unit chambers having a length obtained by dividing the entire length equally. The fabric entry port and the fabric outlet port are provided in upper and lower unit chambers installed at upper and lower end of the unit chambers, respectively.

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

Conventional prior art related to the supply of hot air to an existing tenter, as disclosed in Korean Patent Registration No. 10-320004 "Hot air supply system for tenter" (registration date: 2001.12.24), rotates by receiving the driving force of a driving motor In the hot air supply system of a tenter configured to sequentially supply hot air heated by a flame generated from a burner assembly to the air transport duct and the air injection nozzle with a turbo fan, the turbo fan is configured to supply the air transport duct A pair is located horizontally at a predetermined interval inside the inlet side of the turbofan, and the turbo fan is connected to the motor shaft of a pair of driving motors fixed to the upper plate of the sealing member and rotates independently of each other, and the burner is flame It is fixedly installed on the outer side of the right wall plate of the sealing member so that the heat generated in can be ejected directly below the turbo fan.

As disclosed in Korean Patent Registration No. 10-0613898 "Hot Air Supply and Distribution Structure of Tenter Machine" (registration date: 2006.08.10), other conventional prior art related to hot air distribution in the existing tenter machine, the upper part of the fabric fabric being transported and upper and lower spray ducts for simultaneously spraying hot air from the bottom, an air guide duct installed in communication with one side to guide hot air toward the spray duct, a circulation fan for forcibly circulating and supplying hot air to the air guide duct, and a chamber. In the tenter machine having a duct member for guiding air recovered from the inside to the circulation fan side and a heating member for reheating the air guided through the duct member, the air guide duct is forced by the circulation fan It is provided with an upper branch duct and a lower branch duct for diverging the transferred hot air and guiding them to the upper and lower spray ducts, and each branch duct is configured to form a guide passage of the same shape and length by an intermediate partition wall. .

By the way, in the process of disassembling the hot air toward the upper and lower spray ducts in the existing fan casing, a damper means is provided, and the damper means rotates the damper plate by rotating the driving shaft by the operator outside the chamber, and Depending on the air volume ratio of the hot air supplied to the upper or lower jet duct side, the ratio of the air volume of the hot air supplied to the upper jet duct or lower jet duct side is varied. In the process of distributing the hot air from the inside of the fan casing to the upper and lower jet duct sides, simply rotating the damper plate provides precise control. It has a difficult downside.

For this reason, since the distribution ratio of the hot air supplied and distributed to the upper and lower jet ducts cannot be precisely controlled with the existing method of adjusting the rotation angle of the damper plate, it is necessary to vary the distribution ratio of the hot air according to the type of fabric. There is a disadvantage in that it is difficult to respond to precise hot air distribution.

The branch duct in which the damper plate is installed is connected to communicate with the upper and lower guide ducts for guiding the hot air supply path to the upper and lower jet ducts, respectively, and the upper and lower guide ducts direct the hot air to the upper and lower jet ducts in the lateral direction Since it is formed to be bent so as to be supplied to the side, there is a fear that the hot air will hit the bent part and cause vortexes, as well as drying the fabric unevenly.

Korean Patent Registration No. 10-320004 "Hot air supply system for tenter" (Registration date: 2001.12.24) Korean Patent Registration No. 10-0613898 "Hot air supply distribution structure of tenter" (registration date: 2006.08.10)

The present invention was created to solve these problems in view of the above-mentioned problems, and the object thereof is to provide first and second dampers rotatably disposed inside the fan casing and capable of distributing hot air to the upper and lower spray ducts, respectively. And, by minimizing the impact of the hot air inside the fan casing and forming a curvature part with a rounded curvature to guide the hot air without pressure loss, the air volume of the hot air distributed to the upper and lower spray ducts is measured using the change in the air volume distribution ratio, respectively. In addition to enabling precise control, it is possible to easily adjust the distribution ratio of hot air sprayed to the upper and lower sides of the textile fabric in consideration of conditions such as the type of fabric and shrinkage rate, and the rotation angle of the first and second dampers using the damper shaft It is to provide an upper and lower hot air distribution damper device for a tenter whose structure is improved to enable fine adjustment and precise control.

The present invention for achieving the above object is the upper and lower spray ducts for simultaneously spraying hot air from the upper and lower portions of the textile fabric; a fan casing having a blowing fan for forcibly supplying hot air to the upper and lower spray ducts and having upper and lower guide ducts for guiding hot air to the upper and lower spray ducts; a first damper rotatably disposed inside the upper guide duct and adjusting the supply of hot air blown from the blowing fan toward the upper spray duct according to a rotational angle; a second damper rotatably disposed inside the lower guide duct and controlling supply of hot air blown from the blowing fan toward the lower jetting duct according to a rotational angle; and a damper adjusting means provided outside the fan casing and adjusting rotational angles of the first and second dampers, wherein the upper guide duct has a gap between the upper side of the branch duct and the outer side of the lower side of the upper guide duct. A second curvature having a rounded curvature to guide the transfer of hot air is formed at the bent portion for connection and the bent portion for connection between the upper side of the upper guide duct and the upper portion of the vertical surface of the upper guide duct, respectively, and the lower guide duct To guide the transfer of hot air to the bent portion for connection between the lower side of the branch duct and the upper surface side of the lower guide duct, so that the hot air supplied from the lower side blowing fan is separated and supplied to the inside of the upper and lower guide ducts. A first curvature portion having a rounded curvature is formed, and the first and second dampers are formed in a structure in which the thickness of the central portion where the first and second damper shafts are coupled is thicker than the thickness of the edge portions of both ends, and the first and second dampers are formed. ,2 The length of the damper is characterized in that it is formed longer than the height of the upper and lower guide ducts.

The upper guide duct is connected to communicate with a plurality of upper injection duct sides, respectively, and the lower guide duct is connected to communicate with a plurality of lower injection duct sides, respectively.

The first and second dampers provide the maximum supply amount of hot air when they are horizontal with respect to the first and second damper shafts, and are closed when they are close to vertical with respect to the first and second damper shafts, thereby reducing the supply amount of hot air. is to block

The damper adjusting means includes first and second control bars coupled to first and second fixing guides provided on the outside of the fan casing to guide movement in left and right directions, respectively, and one end of the first control bar first and second connecting links provided to transfer the movement of the first control bar in the left and right directions to the first damper shaft of the first damper, and interlocking with one end of the second control bar. third and fourth connecting links provided to transfer the movement of the second control bar in the left and right directions to the second damper shaft of the second damper, and the above positions spaced apart from the first and second fixing guides. It is provided with a guide bracket disposed outside the fan casing in a height direction to support the movement of the first and second control bars.

In the present invention, the first and second dampers are rotatably disposed in the passages of the upper and lower guide ducts, respectively, so that the supply amount of hot air supplied to the upper and lower jetting ducts can be precisely individually controlled, and the rotation of the first and second dampers can be precisely controlled. It has a useful advantage that the opening angle can be easily adjusted by moving the first and second control bars to the left and right side provided on the outside of the fan casing.

In addition, since the first and second curvature portions are formed for the hot air supplied to the inside of the upper and lower guide ducts of the present invention, the generation of vortices due to collision with the hot air during the supply of the hot air is minimized to direct the hot air toward the upper and lower injection ducts It can guide smoothly and has the advantage of drying the fabric uniformly.

1 is a configuration diagram showing an upper and lower hot air distribution damper device for a tenter according to the present invention.
2 is a front view showing a state in which the passages of the upper and lower guide ducts are closed by the first and second dampers during the pulling operation of the first and second control bars according to the present invention;
3 is a front view showing the opening state of the passages of the upper and lower guide ducts by the first and second dampers during the return operation of the first and second control bars according to the present invention;
4a and 4b are use state diagrams respectively showing open and closed states of passages in the upper and lower guide ducts of the first and second dampers of the present invention from the side.

In describing the present invention, if it is determined that a detailed description of a related known technology or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention and may vary according to a user's intention or custom. Therefore, the definition should be made based on the contents throughout this specification. In addition, 'including' a certain component means that other components may be further included without excluding other components unless otherwise specified.

Referring to FIGS. 1 to 4B, the upper and lower hot air distribution damper device for a tenter according to the present invention includes upper and lower spray ducts 20 and 30 for simultaneously spraying hot air from the upper and lower portions of the textile fabric; Upper and lower guide ducts for guiding hot air toward the upper and lower spray ducts 20 and 30, with a blowing fan 50 forcibly supplying hot air to the upper and lower spray ducts 20 and 30 disposed therein a fan casing 100 provided with (110, 120); A first damper 210 rotatably disposed inside the upper guide duct 110 and adjusting the supply of hot air blown from the blowing fan 50 toward the upper spray duct 20 according to a rotational angle; A second damper 220 rotatably disposed inside the lower guide duct 120 and adjusting the supply of hot air blown from the blowing fan 50 toward the lower spray duct 30 according to a rotational angle; and a damper adjusting means 300 provided on the outside of the fan casing 100 and adjusting rotational angles of the first and second dampers 210 and 220 .

1 and 4A, in the fan casing 100, a blowing fan 50 for blowing hot air upward is disposed on the lower side, and the hot air is blown through upper and lower spray ducts on the upper side of the blowing fan 50. Upper and lower guide ducts 110 and 120 divided into upper and lower parts are provided to supply to the (20, 30) sides.

The upper guide duct 110 is connected to communicate with the plurality of upper spray ducts 20, respectively, and the lower guide duct 120 has a structure connected to communicate with the plurality of lower spray ducts 30, respectively. .

As shown in FIGS. 2 and 3 , the first damper 210 is rotatably shaft-coupled by a first damper shaft 215 within the upper guide duct 110 .

As shown in FIGS. 2 and 3 , the second damper 220 has a structure rotatably shaft-coupled by a second damper shaft 225 within the lower guide duct 120 .

The first and second dampers 210 and 220 are rotatable inside the upper and lower guide ducts 110 and 120, and the thickness of the central portion where the first and second damper shafts 215 and 225 are coupled is the thickness of the edge portions of both ends. have a thicker structure.

In addition, when the first and second dampers 210 and 220 are in a horizontal state with respect to the first and second damper shafts 215 and 225, they provide the maximum supply amount of hot air, and with respect to the first and second damper shafts 215 and 225 When approaching the vertical, it is closed to cut off the supply of hot air.

In addition, the lengths of the first and second dampers 210 and 220 are formed longer than the heights of the upper and lower guide ducts 110 and 120 to limit rotation in the vertical direction.

As shown in FIG. 2, the lower guide duct 120 is a branch duct 130 that separates the hot air supplied from the lower blowing fan 50 to the inside of the upper and lower guide ducts 110 and 120 to be supplied separately. A first curvature 115 having a rounded curvature is formed at a bent portion for connection between the lower side and the upper surface side of the lower guide duct 120 to guide the transport of the hot air.

The first curvature part 115 of the lower guide duct 120 directs hot air to the inner surface of the branch duct 130 branching from the inside of the fan casing 100 to the upper and lower guide ducts 110 and 120. It performs a function of smoothly guiding the supply direction of the hot air so as to supply it to the inside of the duct 120 without interference.

That is, while the hot air branched through the existing branch duct 130 is supplied to the lower guide duct 120, it collides with and interferes with the bent inner surface portion connected to the branch duct 130, resulting in a vortex, resulting in uniformity of the fabric. On the other hand, there is a disadvantage that drying is not performed, but in the present invention, the hot air supplied to the lower guide duct 120 is guided along the rounded portion of the first curvature 115 to minimize vortex generation without interference. be able to

As shown in FIG. 1, the upper guide duct 110 has a second curvature with a rounded curvature to guide the transfer of hot air to a bent portion for connection between the branch duct 130 and the upper guide duct 110. (125) are formed respectively.

As shown in FIG. 2, the second curvature part 125 of the upper guide duct 110 is a bent part for connection between the upper side of the branch duct 130 and the outer side of the lower side of the upper guide duct 110. and a structure in which a second curvature portion 125 having a rounded curvature is formed at a bent portion for connection between the upper side of the upper guide duct 110 and the upper portion of the vertical surface of the upper guide duct 110 to guide the transfer of hot air. have

The second curvature part 125 prevents turbulence from being generated as the hot air diverged through the branch duct 130 interferes with the bent portion supplied to the upper guide duct 110, thereby improving product drying quality. .

As shown in FIGS. 1 and 2 , the damper adjusting means 300 is provided on the outer side of the fan casing 100 in the upper and lower first and second fixing guides 332 and 334 in left and right directions, respectively. The first and second control bars 310 and 320 coupled to guide the movement are connected to one end of the first control bar 310 so as to be interlocked, and the movement of the first control bar 310 in the left and right directions is controlled by the first and second control bars 310 and 320 . The first and second connection links 342 and 344 provided to transmit to the first damper shaft 215 of the first damper 210 are connected to one end of the second control bar 320 so as to interlock with the second control bar. Third and fourth connection links 352 and 354 provided to transmit the left and right movement of the 320 to the second damper shaft 225 of the second damper 220, and the first and second fixing guides 332 and 334 ) and a guide bracket 360 that is disposed on the outside of the fan casing 100 at a position spaced apart from each other in a height direction to support the movement of the first and second control bars 310 and 320.

The first control bar 310 is coupled to the first fixing guide 332 to adjust the rotational angle of the first damper 210 and is movable in left and right directions on the drawing (FIG. 1). In order to adjust the rotation angle of the second damper 220, the second control bar 320 is provided to be movable in the left and right directions on the drawing while being coupled to the second fixing guide 334. do.

The first and second fixing guides 332 and 334 and the first and second control bars 310 and 320 are disposed outside of a tenter chamber (not shown) surrounding the outside of the fan casing 100 .

In addition, a handle is provided at the other end of each of the first and second control bars 310 and 320 .

The guide bracket 360 is fixed to the outside of the fan casing 100 to support and guide the movement in the left and right directions of the first and second control bars 310 and 320 disposed up and down, and Bars 310 and 320 are coupled to pass through.

The first connecting link 342 is pin-connected to one end of the first adjusting bar 310, and the second connecting link 344 has one side connected to the first connecting link 342 and the other side. It is connected to interlock with the first damper shaft 215 of the first damper 210.

The third connection link 352 is pin-connected to one end of the second control bar 320, and the fourth connection link 354 has one side connected to the third connection link 352 and the other side. This is connected to interlock with the second damper shaft 225 of the second damper 220.

As shown in FIGS. 3 and 4A, when the first and second control bars 310 and 320 are moved to the left, the first and second dampers 210 and 220 generate hot air in the upper and lower guide ducts 110 and 120. It maintains a horizontal state so that the maximum amount is supplied, and when it is moved to the right as shown in FIGS. 2 and 4B, the first and second dampers 210 and 220 are rotated in a direction close to the vertical direction to The supply of hot air into the guide ducts 110 and 120 is blocked.

The opening angles of the first and second dampers 210 and 220 can be manually adjusted by the operator using the first and second control bars 310 and 320 according to the movement amount of the pulling and returning operations.

In the present invention having such a configuration, hot air is supplied to the upper and lower guide ducts 110 and 120 on the upper side by the blowing fan 50 disposed inside the fan casing 100, and the hot air is supplied to the upper and lower guide ducts ( 110 and 120) are branched and supplied by the branch duct 130, and the branched hot air passes through the upper and lower guide ducts 110 and 120 and is supplied to the inside of the plurality of upper and lower spray ducts 20 and 30, respectively. supply structure.

In the conventional hot air supply structure, the hot air transmitted from the blowing fan 50 is branched and supplied through the upper and lower guide ducts 110 and 120, and the upper and lower guides are provided according to the rotation angle of the distribution damper at the lower end of the branch duct 130. On the other hand, the supply amount of the hot air supplied to the ducts 110 and 120 is controlled, in the present invention, the hot air transmitted from the blowing fan 50 is directed along the branch duct 130 through the upper and lower guide ducts 110 and 120 to a plurality of upper and lower levels. , It has an advantage that the supply amount of hot air is individually controlled by the first and second dampers 210 and 220 while being supplied to the inside of the lower jetting ducts 20 and 30.

When the first and second dampers 210 and 220 are pulled so that the first and second connecting links 342 and 344 and the third and fourth connecting links 352 and 354 are interlocked when the first and second control bars 310 and 320 are pulled, As shown in FIG. 2, one side ends of the first and third connecting links 342 and 352 are pulled to the right in conjunction with the rightward movement of the first and second control bars 310 and 320, and the first connecting link The second connecting link 344 connected to 342 and the fourth connecting link 354 connected to the third connecting link 352 are interlocked and rotated in the clockwise direction, and the second and fourth connecting links ( The first and second damper shafts 215 and 225 of the first and second dampers 210 and 220 connected to 344 and 354 are rotated.

Subsequently, the first and second damper shafts 215 and 225 receive rotational force of the second and fourth connecting links 344 and 354 and rotate in the clockwise direction, thereby closing the passages of the upper and lower guide ducts 110 and 120. In this direction, the first and second dampers 210 and 220 are rotated.

Meanwhile, when the first and second dampers 210 and 220 push the first and third connecting links 342 and 352 during the return operation of the first and second control bars 310 and 320, the first and second control bars 310 and 320 push As shown in FIG. 3, one end of the first and third connection links 342 and 352 is pushed to the left by the movement operation of the first and second control bars 310 and 320 in the left direction, and the first and second control bars 310 and 320 move to the left. According to the movement of the third connecting link 342,352, the second and fourth connecting links 344 and 354 are interlocked and rotated to rotate the first and second damper shafts 215 and 225 of the first and second dampers 210 and 220.

Subsequently, the first and second damper shafts 215 and 225 receive rotational force of the second and fourth connecting links 344 and 354 and rotate in the opposite direction of the clockwise direction, and flow passages of the upper and lower guide ducts 110 and 120 The first and second dampers 210 and 220 are rotated to open them.

Accordingly, the first and second dampers 210 and 220 according to the present invention adjust the opening and closing amounts of the passages of the upper and lower guide ducts 110 and 120 according to the rotational opening angles.

Since the lower guide duct 120 has a rounded first curvature 115 formed on the inner circumferential surface of the connection portion with the branch duct 130 to which hot air is supplied from the blowing fan 50, the lower guide duct 120 ) has the advantage of suppressing the occurrence of vortexes of the hot air supplied to the lower injection duct 30 by minimizing the collision while the hot air is supplied to the inside of the.

In addition, since the upper guide duct 110 has a rounded second curvature 125 formed on the inner surface of the portion that is bent from the vertical downward to the horizontal direction, hot air is blown into the upper guide duct 110. It has the advantage of suppressing the vortex generation of the hot air supplied to the upper injection duct 20 by minimizing the collision during supply.

In the present invention, the first and second dampers 210 and 220 are rotatably disposed in the passages of the upper and lower guide ducts 110 and 120, respectively, so that the supply amount of hot air supplied to the upper and lower jetting ducts 20 and 30 can be individually controlled with precision. It has a useful advantage in that the rotational opening angle of the first and second dampers 210 and 220 can be easily adjusted by moving the first and second control bars 310 and 320 left and right on the outside of the fan casing 100. .

In addition, since the first and second curvature portions 115 and 125 are formed for the hot air supplied to the inside of the upper and lower guide ducts 110 and 120 of the present invention, the generation of vortices due to collision with the hot air during supply of the hot air is minimized to provide hot air can be smoothly guided to the upper and lower spray ducts 20 and 30, and has the advantage of uniformly drying the fabric.

In this way, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described above and should not be limited, but should be defined by not only the claims to be described later, but also those equivalent to these claims.

That is, the present invention described as above is not limited to the specific preferred embodiments described above, and anyone having ordinary knowledge in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims Of course, various modifications are possible, and such changes are within the scope of the claims.

20,30: upper and lower spray ducts 50: blowing fan
100: fan casing 110, 120: upper and lower guide ducts
115,125: first and second curvatures 130: branch duct
210: first damper 220: second damper
215,225: first and second damper shafts 300: damper control means
310: first control bar 320: second control bar
332,334: first and second fixed guides 342,344: first and second connecting links
352,354: third and fourth connecting links 360: guide bracket

Claims (4)

Upper and lower spray ducts 20 and 30 for spraying hot air at the top and bottom of the textile fabric at the same time;
Upper and lower guide ducts for guiding hot air toward the upper and lower spray ducts 20 and 30, with a blowing fan 50 forcibly supplying hot air to the upper and lower spray ducts 20 and 30 disposed therein a fan casing 100 provided with (110, 120);
A first damper 210 rotatably disposed inside the upper guide duct 110 and adjusting the supply of hot air blown from the blowing fan 50 toward the upper spray duct 20 according to a rotational angle;
A second damper 220 rotatably disposed inside the lower guide duct 120 and adjusting the supply of hot air blown from the blowing fan 50 toward the lower spray duct 30 according to a rotational angle; and
A damper adjusting means 300 provided outside the fan casing 100 and adjusting rotation angles of the first and second dampers 210 and 220;
The upper guide duct 110 includes a bent portion for connection between the upper side of the branch duct 130 and the outer side of the lower side of the upper guide duct 110 and the upper side of the upper guide duct 110 and the upper guide duct ( 110), a second curvature portion 125 having a rounded curvature to guide the transfer of hot air is formed at a bent portion for connection between the upper portions of the vertical plane, respectively,
The lower guide duct 120 is the lower side of the branch duct 130 and the lower guide duct ( 120), a first curvature portion 115 having a rounded curvature to guide the transfer of hot air is formed at a bent portion for connection between the upper surface sides,
The first and second dampers 210 and 220 are formed in a structure in which the thickness of the central portion to which the first and second damper shafts 215 and 225 are coupled is thicker than the thickness of the edge portions of both ends, and the first and second dampers 210 and 220 The upper and lower hot air distribution damper device for tenters, characterized in that the length of is formed longer than the height of the upper and lower guide ducts (110, 120). The method of claim 1,
The upper guide duct 110 is connected to communicate with the plurality of upper injection ducts 20, respectively, and the lower guide duct 120 is connected to communicate with the plurality of lower injection ducts 30, respectively. Upper and lower hot air distribution damper device for tenter. The method of claim 1,
When the first and second dampers 210 and 220 are in a horizontal state with respect to the first and second damper shafts 215 and 225, they provide the maximum supply of hot air, and are perpendicular to the first and second damper shafts 215 and 225. Upper and lower hot air distribution damper device for tenter, characterized in that it closes when approaching and blocks the supply of hot air. The method of claim 1,
The damper adjusting means 300 is coupled to the first and second fixing guides 332 and 334 provided on the outside of the fan casing 100 to guide movement in the left and right directions, respectively. Bars 310 and 320,
It is connected to one end of the first control bar 310 so as to interlock with each other and is provided to transfer the movement of the first control bar 310 in the left and right directions to the first damper shaft 215 of the first damper 210. The first and second connection links 342 and 344 to be;
It is connected to one end of the second control bar 320 so as to interlock with each other and is provided to transfer the movement of the second control bar 320 in the left and right directions to the second damper shaft 225 of the second damper 220. third and fourth connection links 352 and 354, and
Provided with a guide bracket 360 disposed in the height direction outside the fan casing 100 at a position spaced apart from the first and second fixing guides 332 and 334 to support the movement of the first and second control bars 310 and 320 Upper and lower hot air distribution damper device for tenter, characterized in that.

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