EP2706316A2 - Heißluftsprühdüse für Spannrahmen und Heißluftsprühvorrichtung eines Spannrahmens, die diese verwendet - Google Patents

Heißluftsprühdüse für Spannrahmen und Heißluftsprühvorrichtung eines Spannrahmens, die diese verwendet Download PDF

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Publication number
EP2706316A2
EP2706316A2 EP13155484.2A EP13155484A EP2706316A2 EP 2706316 A2 EP2706316 A2 EP 2706316A2 EP 13155484 A EP13155484 A EP 13155484A EP 2706316 A2 EP2706316 A2 EP 2706316A2
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EP
European Patent Office
Prior art keywords
hot wind
nozzle
plate
passage
fabric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13155484.2A
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English (en)
French (fr)
Inventor
Won-Muk Kim
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Il Sung Machinery Co Ltd
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Il Sung Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Il Sung Machinery Co Ltd filed Critical Il Sung Machinery Co Ltd
Publication of EP2706316A2 publication Critical patent/EP2706316A2/de
Withdrawn legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C5/00—Shaping or stretching of tubular fabrics upon cores or internal frames
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes

Definitions

  • the present invention relates to a tenter, a type of textile machinery which carries out heat treatment, drying, shrinking, or the like on a fabric, such as a woven or knitted material, and more particularly, to a hot wind spray nozzle of a tenter and a hot wind spray apparatus of a tenter using the same, in which the fabric can be more efficiently processed using hot wind by perpendicularly spraying the hot wind from nozzle-holes onto the fabric, preventing a vortex from being created in the process in which the hot wind is supplied to the spray nozzle through a hot wind supplying duct, and controlling the amount of the hot wind that is supplied.
  • treatment processes for fabrics include a heat setting process which is performed before dyeing, a drying process which is performed after dyeing, and a shrinking process using heat treatment.
  • a tenter is generally used as an apparatus for carrying out such a process.
  • Such a tenter generally includes a chamber, a hot wind generating duct, a heater, a hot wind supplying duct, upper and lower hot wind spray nozzles and a blower.
  • the chamber has an upper space through which a fabric horizontally passes.
  • the chamber also has a fabric entrance at an end which is upstream in the direction in which the fabric is transferred and a fabric exit at an end which is downstream in the direction in which the fabric is transferred.
  • the hot wind generating duct is disposed in the lower space of the chamber.
  • the heater is coupled to one section of the hot wind generating duct.
  • the hot wind supplying duct is connected to the other section of the hot wind generating duct, and extends upwards.
  • the hot wind supplying duct has a plurality of hot wind outlets in the upper portion thereof, the hot wind outlets being opened toward one section of the hot wind generating duct.
  • a channel-type nozzle body has an inlet end which is mounted on the hot wind outlets of the hot wind supplying duct and the other end which is closed.
  • Each hot wind spray nozzle also has a plurality of nozzle-holes which are formed in the surface of the nozzle body which faces the fabric.
  • the blower is disposed at the lower end of the hot wind supplying duct.
  • the blower takes in air inside the chamber through the heater and the hot wind generating duct, and blows the air into the hot wind spray nozzles through the hot wind supplying duct, so that hot wind can be sprayed onto the upper and lower surfaces of the fabric through the nozzle-holes of the hot wind spray nozzle.
  • the entire length of the chamber is determined depending 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, each unit chamber's length being obtained by equally dividing the entire length of the chamber.
  • the fabric entrance and the fabric exit are respectively provided in the upper and lower unit chambers which are respectively disposed in upstream and downstream ends of the unit chamber.
  • the blower takes the air from inside the chamber into the hot wind generating duct through the heater.
  • the intake air is brought into contact with the heater and is then heated via heat exchange, thereby generating hot wind having a temperature ranging from 180 °C to 220 °C.
  • the hot wind that has been generated in this way is supplied into the hot wind spray nozzle through the hot wind supplying duct by the blower.
  • the hot wind that has been supplied into the hot wind spray nozzle is sprayed onto the upper and lower surfaces of the fabric through a plurality of nozzle-holes in a nozzle plate of the hot wind spray nozzle, thereby carrying out the heat setting process, the drying process or the shrinking process.
  • Korean Patent No. 0475663 discloses a hot wind system of a tenter.
  • the tenter includes a plurality of drying chambers which are disposed in series, each of the drying chambers being divided into the upper section and the lower section.
  • burners in the lower sections and mixing ducts in the upper sections are sequentially arranged in opposite directions.
  • an introduction passage is disposed in order to transfer hot wind that is discharged from the mixing duct.
  • the introduction passage is disposed at the lower end of the drying chamber to the side of a position where the burner is disposed.
  • the introduction passage is opened toward the upper end, with all sides toward the lower end being closed by partitions, and is opened to the lower end of the next chamber.
  • the hot wind that is blown from one end of the mixing duct is sprayed onto the upper and lower surface of the fabric through a plurality of nozzle-holes formed in the mixing duct while flowing toward the other end of the mixing duct.
  • the direction W2 in which the hot wind is sprayed through the nozzle-holes H is not perpendicular to the fabric F that is transferred but is inclined with respect to the direction W1 in which the hot wind flows. Consequently, the heat setting process, the drying process after dyeing or the shrinking process via heat treatment is not efficiently carried out, which is problematic.
  • the Korean Patent No. 0078903 discloses a tenter which includes a heat exchanger, a guide duct and a nozzle having a plurality of nozzle-holes.
  • a tenter which includes a heat exchanger, a guide duct and a nozzle having a plurality of nozzle-holes.
  • an introduction chamber and an accumulation chamber are formed inside each nozzle which is fastened to the guide duct and disposed in the passage of the guide duct by disposing a distribution plate therein.
  • the distribution plate has a plurality of nozzle-holes that are punched therein, and the upper surface of the distribution plate is inclined at a predetermined angle.
  • the nozzle-holes of the distribution plate and the nozzle-holes of the nozzle are embossed on a plane which has a predetermined inclination with respect to the direction in which hot air passes such that they face the direction in which the hot air flows. Consequently, the direction in which the hot wind is sprayed onto the upper and lower surfaces of the fabric becomes perpendicular to the upper and lower surfaces of the fabric.
  • the present invention has been made keeping in mind the above problems occurring in the related art, and the present invention is intended to propose a hot wind spray nozzle of a tenter and a hot wind spray apparatus of a tenter using the same, in which 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 spray apparatus of a tenter in which a vortex is prevented from occurring in the process of supplying hot wind to the hot wind spray nozzle through a hot wind generating duct and a hot wind supplying duct from a blower and the amount of the hot wind that is supplied is controlled, such that a fabric can be more efficiently treated using the hot wind.
  • a hot wind spray nozzle of a tenter having a shape of a polygonal duct.
  • the hot wind spray nozzle includes a nozzle plate horizontally disposed at a position which faces a fabric, the nozzle plate having a plurality of nozzle-holes; a cover plate spaced apart from the nozzle plate in a direction opposite the fabric; and both side plates each connecting with-directional edges of the nozzle plate and the cover plate.
  • One end of the duct has a hot wind entrance and the other end of the duct is a closed end.
  • Each of the nozzle-holes has a hot wind flow control section on an upstream edge thereof which is upstream of a direction in which hot wind flows, wherein the hot wind flow control section is bent in a direction opposite to a direction in which the hot wind is sprayed, and controls flows of the hot wind so that the hot wind that is sprayed from each of the nozzle-holes is perpendicularly sprayed onto the upper or lower surface of the fabric.
  • the hot wind flow control section may be formed as a perpendicular section which is perpendicular to the nozzle plate.
  • the hot wind flow control section may be formed as an inclined section which is inclined in the direction in which the hot wind flows.
  • the hot wind flow control section may include a vertical portion vertically extending from the upstream edge of each of the nozzle-holes and a horizontal portion bent from a leading end of the vertical portion toward the closed end.
  • the hot wind flow control section may include a bent section which is bent from the upstream edge to the downstream edge of each of the nozzle-holes.
  • the hot wind flow control section may include a vertical portion which is formed on the upstream edge of each of the nozzle-holes and is bent perpendicular with respect to the nozzle plate and a curved portion which is formed on a distal end of the vertical portion and is bent to a downstream of the direction in which the hot wind flows.
  • leading end of the hot wind flow control section have a semicircular shape.
  • a hot wind spray apparatus of a tenter which includes a chamber having an upper space through which a fabric is to horizontally pass, a fabric entrance at an end which is upstream in a direction in which the fabric is transferred, and a fabric exit at an end which is downstream in the direction in which the fabric is transferred; a hot wind generating duct disposed in a lower space of the chamber; a heater coupled to one section of the hot wind generating duct; and a hot wind supplying duct which discharges hot wind that has been supplied through a hot wind entrance connected to the other section of the hot wind generating duct toward a hot wind entrance of a hot wind spray nozzle through a hot wind exit having a plurality of hot wind guide sections.
  • the hot wind spray nozzle sprays the hot wind that has been introduced through the hot wind entrance onto the fabric.
  • the hot wind spray nozzle has the shape of a polygonal duct.
  • the hot wind spray nozzle includes a nozzle plate horizontally disposed at a position which faces the fabric, the nozzle plate having a plurality of nozzle-holes; a cover plate spaced apart from the nozzle plate in a direction opposite the fabric; and both side plates each connecting with-directional edges of the nozzle plate and the cover plate.
  • One end of the duct has the hot wind entrance and the other end of the duct is a closed end, and each of the nozzle-holes has a hot wind flow control section on an upstream edge thereof which is upstream of a direction in which hot wind flows.
  • the hot wind flow control section is bent in a direction opposite to a direction in which the hot wind is sprayed, and controls flows of the hot wind so that the hot wind that is sprayed from each of the nozzle-holes is perpendicularly sprayed onto the upper or lower surface of the fabric.
  • the hot wind spray apparatus also includes a blower disposed at a lower end of the hot wind supplying ducts. The blower takes in air from inside the chamber through the heater and the hot wind generating duct, and blows the air into the hot wind spray nozzle through the hot wind supplying duct.
  • the chamber include an upstream unit chamber having a fabric entrance in an upstream wall; a downstream unit chamber having a fabric exit in a downstream wall; and at least one intermediate unit chamber disposed between the upstream unit chamber and the downstream unit chamber.
  • Each space inside the unit chambers may be halved into an upstream space and a downstream space.
  • Each of the upstream and downstream spaces houses therein a plurality of pairs of upper and lower hot wind spray nozzles, one hot wind generating duct, one heater, one hot wind supplying duct, and one blower.
  • the plurality of pairs of upper and lower hot wind spray nozzles, one hot wind generating duct, one heater, one hot wind supplying duct, and one blower which are housed in the upstream space be arranged symmetrical to those housed in the downstream space.
  • the hot wind spray apparatus may further include a hot wind control means inside the hot wind supplying duct, the hot wind control means preventing the hot wind that is supplied to the hot wind spray nozzle from creating a vortex and controlling an amount of the hot wind that is supplied.
  • the hot wind control means may include a hot wind bypass guide plate disposed between the hot wind entrance and an upper hot wind exit of the hot wind supplying duct.
  • the hot wind bypass guide partitions a space between the hot wind entrance and the upper hot wind exit into a hot wind upward passage, through which the hot wind that has been blown from the blower and introduced through the hot wind entrance flows upward, and a hot wind downward passage, through which the hot wind that has flowed upward along the hot wind upward passage flows downward from an upper end of the hot wind upward passage toward the hot wind spray nozzle.
  • the hot wind control means may also include a hot wind inversion guide plate disposed in an upper end of the hot wind supplying duct, forming a hot wind inversion passage with which the hot wind which flows upward along the hot wind upward passage is inverted downward, and a hot wind distribution plate disposed adjacent to the upper hot wind exit inside the hot wind downward passage.
  • the hot wind distribution plate distributes the hot wind toward the hot wind exits of the upper and lower hot wind spray nozzles.
  • the hot wind control means may also include a first airflow control plate which adjusts the angle of opening of a passage portion between the hot wind inversion passage and the hot wind downward passage and a second airflow control plate disposed inside the hot wind downward passage.
  • the hot wind spray nozzle includes upper and lower hot wind spray nozzles, and the second airflow control plate adjusts the angle of opening of a passage portion between the upper and lower hot wind spray nozzles.
  • the hot wind bypass guide plate may include a partition plate partitioning the hot wind upward passage and hot wind downward passage; and a hot wind guide plate connecting a lower end of the partition plate to a lower end of the lower hot wind entrance.
  • the hot wind guide plate haves a curved shape which prevents the hot wind that flows downward along the hot wind downward passage from creating a vortex while being guided toward the hot wind entrance of the lower hot wind spray nozzle.
  • both ends of the hot wind inversion guide plate be curved to prevent the hot wind that flows upward along the hot wind upward passage from creating a vortex while being inverted downward toward the hot wind downward passage.
  • the hot wind distribution plate have inclined plates which distribute the hot wind that flows downward along the hot wind downward passage toward the upper and lower hot wind spray nozzles.
  • the first airflow control plate have a support end rotatably supported on the upper end of the upper hot wind exit of the hot wind supplying duct.
  • a free end of the hot wind supplying duct adjoins the upper end of the hot wind bypass guide plate and closes between the hot wind inversion passage and the hot wind downward passage.
  • the hot wind supplying duct is rotated upward, the hot wind supplying duct opens between the hot wind inversion passage and the hot wind downward passage.
  • the first airflow control plate may have a curved portion which prevents the hot wind that is inverted in the hot wind inversion passage from creating a vortex when the hot wind inversion passage and the hot wind downward passage are opened to each other in response to upward rotation of the first airflow control plate.
  • a support end of the second airflow control plate be supported on a middle section of the hot wind bypass guide plate, such that the second airflow control plate is rotatable up and down.
  • the free end thereof adjoins a lower end of the hot wind distribution plate, thereby preventing the hot wind that flows downward along the hot wind downward passage from being supplied toward the lower hot wind spray nozzle.
  • the free end thereof is detached from the lower end of the hot wind distribution plate, so that the hot wind that flows downward along the hot wind downward passage is supplied toward the lower hot wind spray nozzle.
  • the hot wind flow control section is disposed upstream of the nozzle-holes in the nozzle plate, the angle (direction) at which the hot wind that is sprayed onto the upper and lower surface of a fabric through the nozzle-holes in the nozzle plate of the hot wind spray nozzle becomes perpendicular to the upper and lower surfaces of the fabric, so that the heat setting process, the drying process after dyeing, or the shrinking process using heat treatment can be effectively and sufficiently carried out.
  • the hot wind control means is provided in the hot wind supplying duct, a vortex that may occur in the process of supplying the hot wind to the hot wind spray nozzle through the hot wind generating duct and the hot wind supplying duct from the blower is minimized, and the angle at which the hot wind is sprayed onto 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, the drying process after dyeing, or the shrinking process using heat treatment can be effectively and sufficiently carried out.
  • FIG. 1 and FIG. 2 show a first exemplary embodiment of the hot wind spray nozzle of the tenter according to the present invention.
  • the hot wind spray nozzle of the tenter has a duct type structure having a rectangular cross-section, and includes a nozzle plate 110 which is horizontally disposed at a position which faces a fabric F, a cover plate 120 which is spaced apart from the nozzle plate 110 in the direction opposite the fabric F, and both side plates 130 and 140 which connect both width-directional edges of the nozzle plate 110 and the cover plate 120.
  • the nozzle plate 110 has a plurality of nozzle-holes 150.
  • one end in the longitudinal direction is configured as an open end which has a hot wind entrance 160, and the other end is configured as a closed end which is closed by a stopper member 170.
  • the hot wind which has been introduced through the hot wind entrance 160 of the open end is sprayed through the nozzle-holes 150 while flowing toward the closed end.
  • the hot wind spray nozzle 100 is configured such that the inner cross-sectional area is wide at the open end having the hot wind entrance 160 and gradually narrows in the direction toward the closed end, such that the hot wind which is sprayed through the nozzle-holes while flowing through inside the hot wind spray nozzle 100 is uniformly sprayed over the entire area that ranges from the open end to the closed end.
  • both of the side plates 130 and 140 are configured such that the edge corresponding to the nozzle plate 110 is horizontal and the edge corresponding to the cover plate 120 is inclined toward the nozzle plate 110 from the open end to the closed end.
  • the cover plate 120 is configured to correspond to the both side plates 130 and 140, and is inclined toward the nozzle plate 110 from the open end to the closed end.
  • Upper and lower hot wind spray nozzles 100 are disposed above and below the fabric F that is being transferred inside the chamber (which will be described later) of the tenter such that two nozzle plates 110 face the upper and lower surfaces of the fabric F in order to spray the hot wind onto the upper and lower surfaces of the fabric F that is being transferred.
  • the nozzle-holes 150 are arranged in the longitudinal direction and the width direction of the nozzle plate 110. When the nozzle-holes 150 are arranged in the longitudinal direction, they are arranged in a line at regular intervals. In contrast, when the nozzle-holes 150 are arranged in the width direction, they are arranged at regular intervals but laterally staggered. This is intended to ensure that the hot wind is sprayed from the nozzle-holes 150 over the entire surface of the fabric F.
  • the direction D in which the fabric D is transferred becomes identical with the width direction of the nozzle plate 100.
  • the nozzle-holes 150 which are arranged in the width direction are arranged in a line, a boundary is formed between clusters of hot wind that are sprayed from adjacent nozzle-holes of the nozzle-holes 150 which are arranged in the width direction of the fabric F that is being transferred, such that there are some portions onto which the hot wind is not sprayed.
  • the nozzle-holes 150 can be formed by punching the nozzle plate 110. Although each nozzle-hole 150 can have the rectangular shape with all of upstream and downstream edges S1 and S2 and lateral edges S3 and S4 being linear in the direction W1 in which the hot wind flows inside the hot wind spray nozzle 100, it is preferable that the upstream edge S1 and the lateral edges S3 and S4 be linear and the downstream edge S2 be semicircular (see FIG. 1 ).
  • a hot wind flow control section 180 is provided on the upstream edge S1 positioned upstream of the nozzle-holes 150 in the direction W1 in which the hot wind flows.
  • the hot wind flow control section 180 controls the flow of the hot wind which is sprayed through the nozzle-holes 150 so that the hot wind is sprayed in the direction perpendicular to the upper and lower surfaces of the fabric F (see FIG. 1 and FIG. 2 ).
  • the hot wind flow control section 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 11, the punching is carried out so that the downstream edge S2 and the lateral edges S3 and S4 of the nozzle-hole 150 are completely cut but the upstream edge S1 is not cut.
  • the hot wind flow control section 180 is formed on the upstream edge S1 of the nozzle-hole 150 such that it can bend in the direction opposite the direction W2 in which the hot wind is sprayed, i.e. in the direction toward the fabric F.
  • the hot wind flow control section 180 is formed as a perpendicular section 181 which is perpendicular to the nozzle plate 110.
  • the leading edge of the hot wind flow control section 180 has the shape that corresponds to the downstream edge S2 of the nozzle-hole 150.
  • the downstream edge S2 of the nozzle-hole 150 is semicircular, and the leading edge of the hot wind flow control section 180 has the corresponding semicircular shape.
  • downstream edge S2 of the nozzle-hole 150 and the leading edge of the hot wind flow control section 180 may have a linear shape.
  • the hot wind which has been introduced into the hot wind spray nozzle 100 through the hot wind entrance 160 flows from the open end toward the closed end, the hot wind is blocked by the hot wind flow control section 180 at each position of the nozzle-holes 150, and then passes by the hot wind flow control section 180 and continues to flow toward the closed end.
  • the hot wind which flows inside the hot wind spray nozzle 100 does not directly flow to the nozzle-holes 150, but is blocked and passes by the hot wind flow control section 180.
  • the hot wind passes through the nozzle-holes 150 under a pressure that is the difference between the inner pressure and the outer pressure of the hot wind spray nozzle 100. Accordingly, the angle in which the hot wind is sprayed through the nozzle-holes 150 is not influenced by the speed at which the hot wind flows.
  • Arrows indicated with imaginary lines in FIG. 2 refer to the hot wind which is controlled by the hot wind flow control section 180 and does not flow toward the nozzle-holes 150.
  • the angle (direction) at which the hot wind is sprayed 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 wind spray apparatus of a tenter to which a hot wind spray nozzle according to the present invention is applied.
  • the hot wind spray apparatus of a tenter includes a chamber 200, hot wind generating ducts 300, heaters 400, hot wind supplying ducts 500, hot wind spray nozzles 100, and blowers 600.
  • the chamber 200 has an upper space through which a fabric F horizontally passes.
  • the chamber 200 has a fabric entrance 203 at an end which is upstream in the direction in which the fabric F is transferred and a fabric exit 204 at an end which is downstream in the direction in which the fabric F is transferred.
  • Each hot wind generating duct 300 is disposed in the lower space of the chamber 200.
  • Each heater 400 is coupled to one section of the hot wind generating duct 300.
  • Each hot wind supplying duct 500 extends upward at a hot wind entrance 510 (see FIG.
  • the hot wind supplying duct 500 has a hot wind exit 520 in the upper section thereof which is opened toward one section of the hot wind generating duct 300 and in which an inlet end of each hot wind spray nozzle 100 is disposed.
  • the hot wind exit 520 has a plurality of hot wind guide sections 540.
  • the hot wind supplying duct 500 discharges hot wind toward a hot wind entrance 160 of the hot wind spray nozzle 100 through the hot wind exit 520.
  • the hot wind spray nozzle 100 sprays the hot wind that has been introduced through the hot wind entrance 160 onto the fabric F.
  • Each blower 600 is disposed at each lower end of the hot wind supplying ducts 500. The blower 600 takes in air from inside the chamber 200 through the heater 400 and the hot wind generating duct 300, and blows the air into the hot wind spray nozzles 100 through the hot wind supplying duct 500.
  • the length of the chamber 200 is determined in consideration of the speed at which the fabric F is transferred and a hot wind contact time which is required for a heat setting process, a drying process and a shrinking process, and the width of the chamber 200 is determined in consideration of the width the fabric F.
  • the length of the chamber 200 ranges from ten to several tens of meters for the above-described processes, including the heat setting process, the drying process and the shrinking process.
  • the chamber 200 may be formed as a single chamber, it is generally formed of a plurality of unit chambers 200A, 200B and 200C which are connected together.
  • the upstream unit chamber 200A has an upstream wall 201, and the downstream unit chamber 200B has a downstream wall 202.
  • the upstream wall 201 has the fabric entrance 203, and the downstream wall 202 has the fabric exit 204.
  • the unit chamber 200A is the upstream unit chamber which is upstream in the direction in which the fabric is transferred
  • the unit chamber 200B is the downstream unit chamber which is downstream in the direction in which the fabric is transferred
  • the unit chamber 200C is an intermediate unit chamber which is connected between the upstream and downstream unit chambers 200A and 200B.
  • three unit chambers 200A, 200B and 200C are shown in the illustrated embodiment, a plurality of intermediate unit chambers 200C may be connected depending on the above-described process conditions.
  • Each inner space of the unit chambers 200A, 200B and 200C is halved into the upstream space and the downstream space.
  • a plurality of pairs of upper and lower hot wind spray nozzles 100 (four pairs are shown in the figure), one hot wind generating duct 300, one heater 400, one hot wind supplying duct 500, and one blower 600 are provided.
  • all of the hot wind spray nozzle 100, the hot wind generating duct 300, the heater 400, the hot wind supplying duct 500 and the blower 600 can be disposed in the same direction, it is preferable that parts in the upstream space and parts in the downstream space be disposed in the opposite directions, i.e. be rotational symmetric about the center line of the respective unit chambers 200A, 200B and 200C, as shown in the figure.
  • the hot wind generating duct 300 is disposed at one end of the respective unit chambers 200A, 200B and 200C in the width direction, and faces the other end.
  • the hot wind generating duct 300 has an air intake port 310 in one end and a hot wind discharge port 320 in the other end.
  • the heater 400 is disposed in the air intake port 310.
  • the heater 400 can be implemented as an electric heater, a boiler or the like which generates heat, it is preferable that the heater 400 be implemented as a heat exchanger which is connected to an outside heat source in order to minimize the space which it occupies inside each of the unit chambers 200A, 200B and 200C.
  • the hot wind supplying duct 500 has, in the lower end thereof, the hot wind entrance 510 which is connected to the hot wind discharge port 320 of the hot wind generating duct 300 and, in the upper end thereof, a plurality of hot wind exits 520 which are opened toward one side.
  • the hot wind entrance 510 is disposed at the lower end of the hot wind supplying duct 500, and faces the hot wind generating duct 300.
  • the hot wind exit 520 is disposed at the upper end of the hot wind supplying duct 500, and faces in the same direction as the hot wind entrance 510.
  • the hot wind exits 520 are arranged in upper and lower rows composed of a plurality of hot wind exits (four hot wind exits are shown in the figure). Each hot wind exit 520 has a nozzle-fixing frame 530 in the periphery thereof which surrounds and supports the inlet end of the hot wind spray nozzle 100,
  • the hot wind exit 520 has a plurality of hot wind guide sections 540 (three hot wind guide sections are shown in the figure) which guide the hot wind in the longitudinal direction of the hot wind spray nozzle 100.
  • the hot wind guide sections 540 have a gap 541 between the upper end and the lower end thereof through which the inlet end of the hot wind spray nozzle 100 can be inserted into the hot wind exit 520.
  • the hot wind guide sections 540 can be disposed inside the hot wind entrance 160 which is formed in the inlet end of the hot wind spray nozzle 100.
  • the blower 600 be implemented as a centrifugal fan which has an intake end which is oriented toward one end of the hot wind generating duct 300 in which the heater 400 is disposed and a discharge end which is oriented toward the hot wind supplying duct 500.
  • the fabric F is introduced through the fabric entrance 203 of the upstream unit chamber 200A, passes through the intermediate unit chamber 200C, and is discharged through the fabric exit 204 of the downstream unit chamber 200B.
  • the air inside the unit chambers 200A, 200B and 200C is taken into the hot wind generating ducts 300 through the air intake ports 310 under the intake force of the blower 600.
  • each heater 400 is disposed in each air intake port 310 of the hot wind generating duct 300, the air which is taken into the hot wind generating duct 300 is heated while passing through the heater 400, so that hot wind is generated inside the hot wind generating duct 300.
  • the hot wind which has been generated in the hot wind generating duct 300 is introduced into the hot wind supplying duct 500 through the hot wind entrance 510 of the hot wind supplying duct 500 through the hot wind discharge port 320 of the hot wind generating duct 300.
  • the hot wind which has been introduced into the hot wind supplying duct 500 rises through the inside of the hot wind supplying duct 500 and is discharged through the hot wind exit 520 in the upper end of the hot wind supplying duct 500.
  • the hot wind which has been discharged through the hot wind exit 520 is supplied into the hot wind spray nozzle 100 through the hot wind entrance 160.
  • the hot wind which has been supplied into the hot wind spray nozzle 100 is sprayed onto the upper and lower surfaces of the fabric F through a plurality of nozzle-holes 150 which is formed in the nozzle plate 110 of the hot wind spray nozzle 100. Consequently, the fabric F can undergo the heat setting process, the drying process or the shrinking process.
  • a hot wind control means is provided inside the hot wind supplying duct 500 in order to prevent the hot wind that is supplied to the hot wind spray nozzle 100 from creating a vortex and to control the amount of the hot wind that is supplied.
  • the hot wind control means includes a hot wind bypass guide plate 710, a hot wind inversion guide plate 720, a hot wind distribution plate 730, a first airflow control plate 740, and a second airflow control plate 750 (see FIG. 6 to FIG. 8 ).
  • the hot wind bypass guide plate 710 is disposed between the hot wind entrance 510 and the upper hot wind exit 520 of the hot wind supplying duct 500, and partitions the space between the hot wind entrance 510 and the upper hot wind exit 520 into a hot wind upward passage P1 through which the hot wind that has been blown from the blower 600 and introduced through the hot wind entrance 510 flows upward and a hot wind downward passage P2 through which the hot wind that has flowed upward along the hot wind upward passage P1 flows downward from the upper end of the hot wind upward passage P1 toward the hot wind spray nozzle 100.
  • the hot wind inversion guide plate 720 is disposed in the upper end of the hot wind supplying duct 500, and forms a hot wind inversion passage P3 with which the hot wind which flows upward along the hot wind upward passage P1 is inverted downward.
  • the hot wind distribution plate 730 is disposed adjacent to the upper hot wind exit 520 inside the hot wind downward passage P2, and distributes the hot wind toward the hot wind exits 520 of the upper and lower hot wind spray nozzles 100.
  • the first airflow control plate 740 opens and closes between the hot wind inversion passage P3 and the hot wind downward passage P2, and adjusts the angle of opening.
  • the second airflow control plate 750 is disposed inside the hot wind downward passage P2. The second airflow control plate 750 opens and closes the passage of the hot wind that is supplied toward the upper and lower hot wind spray nozzles 100, and adjusts the angle of opening.
  • the hot wind bypass guide plate 710 includes a partition plate 711 which partitions the hot wind upward passage P1 and hot wind downward passage P2 and a hot wind guide plate 712 which connects the lower end of the partition plate 711 to the lower end of the lower hot wind entrance 510.
  • the hot wind guide plate 712 have a curved shape which can prevent the hot wind that flows downward along the hot wind downward passage P2 from creating a vortex while being guided toward the hot wind entrance 160 of the lower hot wind spray nozzle 100.
  • both ends of the hot wind inversion guide plate 720 be curved so as to prevent the hot wind that flows upward along the hot wind upward passage P1 from creating a vortex while being inverted downward toward the hot wind downward passage P2.
  • the hot wind distribution plate 730 includes inclined plates 731 and 732 which distribute the hot wind that flows downward along the hot wind downward passage P2 toward the upper and lower hot wind spray nozzles 100.
  • the upper ends of the inclined plates 731 and 732 are connected by a curved connecting portion 733.
  • the first airflow control plate 740 has a support end which is rotatably supported on the upper end of the upper hot wind exit 520 of the hot wind supplying duct 500.
  • the hot wind supplying duct 500 When the hot wind supplying duct 500 is rotated downward, the free end of the hot wind supplying duct 500 adjoins the upper end of the hot wind bypass guide plate 710, thereby closing between the hot wind inversion passage P3 and the hot wind downward passage P2.
  • the hot wind supplying duct 500 is rotated upward, the hot wind supplying duct 500 opens between the hot wind inversion passage P3 and the hot wind downward passage P2. Consequently, adjustment of the angle at which the hot wind supplying duct 500 is opened can control the amount of the hot wind that is supplied to the upper and lower hot wind spray nozzles 100.
  • the first airflow control plate 740 may have the shape of a flat plate, it is preferable that the first airflow control plate 740 have a curved portion 741 which can prevent the hot wind that is inverted in the hot wind inversion passage P3 from creating a vortex when the hot wind inversion passage P3 and the hot wind downward passage P2 are opened to each other in response to upward rotation of the first airflow control plate 740.
  • a rotation lever 742 and a manipulation rod 743 are provided in order to control the opening/closing operation of the first airflow control plate 740.
  • the pivot lever 742 is fixedly connected to the support end of the first airflow control plate 740, and integrally rotates with the first airflow control plate 740.
  • the manipulation rod 743 is hinge-connected to a free end of the rotation lever 742 such that it can move up and down.
  • the free end of the rotation lever 742 also has a slot 744 into which a hinge pin which is connected to the manipulation rod 743 is movably inserted.
  • a support end of the second airflow control plate 750 is supported on the middle section of the hot wind bypass guide plate 710, such that the second airflow control plate 750 is rotatable up and down.
  • the free end thereof adjoins the lower end of the hot wind distribution plate 730, thereby preventing the hot wind that flows downward along the hot wind downward passage P2 from being supplied toward the lower hot wind spray nozzle 100.
  • the free end thereof is detached from the lower end of the hot wind distribution plate 730, so that the hot wind that flows downward along the hot wind downward passage P2 can be supplied toward the lower hot wind spray nozzle 100.
  • the amount of the hot wind that is supplied to the lower hot wind spray nozzle 100 can be controlled by adjusting the angle of opening of the second airflow control plate 750.
  • a fixed lever 751, a connecting lever 752 and a manipulation lever 753 are provided in order to control the opening/closing operation of the second airflow control plate 750.
  • the fixed lever 751 is fixedly connected to a support end of the second airflow control plate 750.
  • the connecting lever 752 is hinge-connected to the fixed lever 751.
  • the manipulation lever 753 is hinge-connected to the connecting lever 752 such that it can horizontally move.
  • first and second airflow control plates 740 and 750 can be operated using the levers and the rods which have been described above, their own support ends can also be connected to a rotational driving means, such as a servo motor, so that they are automatically controlled.
  • a rotational driving means such as a servo motor
  • the drying process and the shrinking process are carried out on the fabric using the hot wind spray apparatus of a tenter of the present invention which has the above-described airflow control means, it is possible to perform each process at an optimal level by controlling the amount of the hot wind that is supplied to the upper and lower hot wind spray nozzles 100 using the first and second airflow control plates 740 and 750.
  • FIG. 9 and FIG. 10 show a second exemplary embodiment of the hot wind spray nozzle 100 according to the invention.
  • the hot wind flow control section 180 has an inclined section 182 which is inclined in the direction W1 in which the hot wind flows.
  • the hot wind flow control section 180 is implemented as the inclined section 182 which is inclined from the upstream to the downstream in the direction W1 in which the hot wind flows. It is therefore possible to reduce flow resistance against the hot wind that flows inside the hot wind spray nozzle 100. It is also possible to prevent the hot wind that flows inside the hot wind spray nozzle 100 from directly flowing to the nozzle-holes 150, so that the direction W2 at which the hot wind is sprayed from the nozzle-holes 150 becomes perpendicular to the nozzle plate 110.
  • FIG. 11 and FIG. 12 show a third exemplary embodiment of the hot wind spray nozzle 100 according to the present invention.
  • the hot wind flow control section 180 is bent to the downstream of the direction W1 in which the hot wind flows.
  • the hot wind flow control section 180 includes a vertical portion 183 vertically extending from the upstream edge S1 of each nozzle-hole 150 and a horizontal portion 184 bent from the leading end of the vertical portion 183 toward the closed end.
  • the hot wind flow control section 180 includes the vertical section 183 and the horizontal section 184, the hot wind that flows inside the hot wind spray nozzle 100 is, at first, blocked or caused to pass around the vertical portion 183 and, then, blocked or caused to pass around the horizontal portion 184. It is therefore possible to more effectively prevent the hot wind from directly flowing to the nozzle-holes 150, so that the direction W2 in which the hot wind is sprayed from the nozzle-holes 150 becomes perpendicular to the nozzle plate 110.
  • the horizontal portion 184 can more reliably prevent the hot wind that flows inside the hot wind spray nozzle 100 from flowing toward the nozzle-holes 150, it can more effectively act to set the direction W2 in which the hot wind is sprayed to be perpendicular to the nozzle plate 110 and the fabric F.
  • FIG. 13 and FIG. 14 show a fourth exemplary embodiment of the hot wind spray nozzle 100 according to the present invention.
  • the hot wind flow control section 180 is bent to the downstream of the direction W1 in which the hot wind flows.
  • the hot wind flow control section 180 is implemented as a bent section 185 which is bent from the upstream edge S1 to the downstream edge S2 of each nozzle-hole 150.
  • the hot wind flow control section 180 is implemented as the bent section 185, it is possible to reduce flow resistance against the hot wind that flows inside the hot wind spray nozzle 100. It is also possible to prevent the hot wind from directly flowing toward the nozzle-hole 150, so that the direction W2 in which the hot wind is sprayed from the nozzle-hole 150 becomes perpendicular to the nozzle plate 110.
  • FIG. 15 and FIG. 16 show a fifth exemplary embodiment of the hot wind spray nozzle 100 according to the present invention.
  • the hot wind flow control section 180 is perpendicularly bent with respect to the nozzle plate 110 and is curved to the downstream of the direction W1 in which the hot wind flows.
  • the hot wind flow control section 180 includes a vertical portion 186 which is formed on the upstream edge S1 of each nozzle-hole 150 and bent perpendicular with respect to the nozzle plate 110 and a curved portion 187 which is formed on the distal end of the vertical portion 186 and bent to the downstream of the direction W1 in which the hot wind flows.
  • the hot wind flow control section 180 since the hot wind flow control section 180 includes the vertical portion 186 and the curved portion 187, it is possible to more effectively control the flow of the hot wind based on the blocking and bypassing operation of the vertical portion 186 and the curved portion 187. Consequently, the direction W2 in which the hot wind is sprayed from the nozzle-hole 150 of the hot wind spray nozzle 100 becomes perpendicular to the nozzle plate 110.
  • FIG. 17 and FIG. 18 show a sixth exemplary embodiment of the hot wind spray nozzle 100 according to the present invention.
  • the hot wind spray nozzle 100 has a wave shape including inclined surfaces 111 and 112 which are symmetrically inclined in the lateral direction.
  • the nozzle-holes 150 and the hot wind flow control sections 180 are formed in the inclined surfaces 111 and 112.
  • the hot wind spray nozzle 100 is configured to be suitable for restoring the texture of the fabric which is pressed and deformed into the original shape.
  • the hot wind spray nozzle 100 of this embodiment has the nozzle holes 150 in the inclined surfaces 111 and 112 which are symmetrically inclined in the lateral direction, the hot wind that is sprayed from the nozzle-hoes 150 is sprayed in the direction inclined to a woven or knitted material when viewed in the longitudinal direction of the hot wind spray nozzle 100. Therefore, the hot wind that is sprayed at an incline from the nozzle-holes 150 forms waves on the woven or knitted material, thereby restoring the texture of the woven or knitted material.
  • hot wind flow control section 180 of this embodiment is illustrated as having the same shape as the foregoing fifth embodiment, any one of the hot wind flow control sections according to the first to fourth embodiments can be employed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Drying Of Solid Materials (AREA)
EP13155484.2A 2012-09-05 2013-02-15 Heißluftsprühdüse für Spannrahmen und Heißluftsprühvorrichtung eines Spannrahmens, die diese verwendet Withdrawn EP2706316A2 (de)

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US12031774B2 (en) 2018-03-29 2024-07-09 Toray Industries, Inc. Gas blowoff nozzle and furnace, and method for manufacturing coated film
CN111118771A (zh) * 2018-10-31 2020-05-08 日星机械工业株式会社 具备自动过滤装置的纤维烘燥定型机
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KR101229347B1 (ko) 2013-02-05
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JP2014052173A (ja) 2014-03-20
CN103668840A (zh) 2014-03-26

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