JP3080883B2 - Blast nozzle device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a blower nozzle device which is used by being attached to a heat treatment apparatus which blows hot air onto a web such as a cloth or a film conveyed in a heat treatment chamber and heat-treats the web. It is.

[0002]

2. Description of the Related Art In a conventional heat treatment apparatus of this kind,
A heat treatment chamber is provided, a web transfer path is provided in the heat treatment chamber, and blower nozzle devices are arranged inside the heat treatment chamber and above and below the transfer path. And
The web is conveyed along the conveyance path in the heat treatment chamber, and the web is subjected to heat treatment by blowing hot air from a blowing nozzle device.

As shown in FIG. 7, a blowing nozzle device used in this heat treatment apparatus includes a blowing chamber 30, a blowing port 31 connected to the blowing chamber 30, and a blowing duct 32 connected to the blowing port 31. have. The blower chamber 30 has a cylindrical shape with both ends closed, a notch 33 of a predetermined width extending over the entire length is formed on the side wall, and a blower fan 34 is coaxially disposed inside. The air outlet 31 includes a first upper wall 35 extending from one side edge of the notch 33 over the entire length of the notch in a tangential direction of the circumference of both end faces, and a notch 33.
A first bottom wall 36 extending in parallel with the first top wall 35 over the entire length of the notch from the other side edge of the notch 33, and a first top wall 35 and a first bottom extending from both end edges of the notch 33, respectively. The first side wall is connected to the wall 36.

[0004] The air duct 32 is provided on the first upper wall 3 of the air outlet.
5, a second upper wall 37 which is inclined downward from the leading edge of the second upper wall 37.
A second bottom wall 38 connected to the leading edge of the second top wall 37 and the leading edge of the first bottom wall 36 of the air outlet; And a side wall connected to the wall 37 and the second bottom wall 38. The second bottom wall 38 also includes a first bottom wall 36 extending at right angles to the first bottom wall 36.
A second portion 38b extending in parallel from the first portion 38a to the first upper wall 35 of the air outlet 31;
A third portion extending from the portion 38b of the third portion at right angles to the second upper wall 37.
Part 38c. Further, the second portion 38b of the second bottom wall 38 of the blower duct has a large number of jets 3
9 are formed at intervals from one another and are appropriately arranged.

[0005] The blower nozzle device includes a blower duct 32.
Extend along the width direction of the conveyed web, and
Is arranged such that the second part 38b of the bottom wall 38 is parallel to the surface of the web. Then, the high-temperature air supplied to the blower chamber 30 is sent by the blower fan 34 through the blower port 31 and the blower duct 32, and hot air is blown out from the outlet 19. In this case, the hot air is blown obliquely downward from the jet port 19 toward the tip of the apparatus and obliquely to the surface of the conveyed web. However, if the conveyed web receives the hot air in the oblique direction, it may meander, and the hot air blown out in the oblique direction cannot uniformly heat the web, thus adversely affecting the heat treatment effect. .

Therefore, in order to blow the hot air from the jet port 19 directly below and perpendicular to the surface of the web, as shown in FIG. There is conventionally known a blower nozzle device in which a number of identical vertical plates 40 are arranged in parallel with each other at regular intervals in the length direction of a blower duct. In FIG. 8, the same components as those in FIG. 7 are denoted by the same reference numerals, and description thereof will be omitted. However, according to this configuration, when dust or the like is clogged in the gap between the vertical plates 40, the blower nozzle device must be disassembled, and maintenance of the device is troublesome, and the structure is complicated. However, there is a disadvantage that the manufacturing cost is high.

[0007]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a blower nozzle device which has a simple structure and can be easily maintained, in which hot air can be blown from a jet port perpendicularly to the surface of a web. It is in.

[0008]

According to the present invention, there is provided a blower chamber and a blower opening formed in the blower chamber.
And a blower duct connected through the blower chamber,
The air flow generated by the arranged blower fan is
A blower nozzle device that supplies the blower duct to the blower duct through a blower port and allows the blower to blow out from a blowout port provided in the blower duct, wherein the blower chamber has a cylindrical shape with both ends closed, A blower fan is arranged coaxially,
On the side wall, a notch of a predetermined width extending over the entire length is formed, and the air outlet is formed from one side edge of the notch,
A first upper wall extending tangentially to the circumference of both end faces of the blower chamber over the entire length of the notch, and parallel to the first upper wall over the entire length of the notch from the other side edge of the notch. A first bottom wall extending from both ends of the notch, and a first side wall connected to the first top wall and the first bottom wall. A second upper wall extending forward from a leading edge of the first upper wall; and a second upper wall extending forward from a leading edge of the first bottom wall.
A second bottom wall connected to the leading edge of the upper wall, and a second side wall extending forward from the leading edge of the first side wall and connecting to the second top wall and the second bottom wall, respectively. And the second bottom wall of the blower duct has a region extending parallel to the first upper wall of the blower port, and is partially bent in this region to form a large number of concave portions or convex portions. Department or
These combinations are formed, and the concave portion forms a certain acute angle with respect to a plane surrounded by the opening edge toward the inside of the ventilation duct from the front end region of the opening edge to the rear. The projection has a sloped wall portion extending from the rear end side region of the periphery toward the outside of the blower duct at a constant acute angle with respect to a plane surrounded by the periphery. The blower nozzle device has an inclined wall portion that extends, and the outlet is formed in the inclined wall portion of the concave portion or the convex portion.

In this configuration, the outlet formed in the inclined wall portion of the concave portion or the convex portion of the air duct may have any shape, but may be circular, square, elliptical, or the length of the air duct. It preferably has a slit shape extending in the direction. Also, preferably,
The inclined wall portion of the recess extends rearward from the distal end region of the opening edge of the recess toward the interior of the air duct at an angle of 5 ° to 20 ° with respect to a plane surrounded by the opening edge, The sloped wall portion of the convex portion forms an angle of 5 ° to 20 ° with respect to a plane surrounded by the peripheral portion toward the outside of the ventilation duct forward from the rear end side region of the peripheral portion of the convex portion. Is running.

[0010]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view of one embodiment of the present invention. As shown in FIG. 1, the blower nozzle device according to the present invention includes a blower chamber 1, a blower port 2 connected to the blower chamber 1, and a blower duct 3 connected to the blower port 2.

The blower chamber 1 has a cylindrical shape with both ends closed, a notch 4 of a predetermined width extending over the entire length is formed on the side wall, and a blower fan 5 is arranged coaxially inside. Although not shown, the blower chamber 1 is provided with a hot air supply port. The air outlet 2 is formed from one side edge of the notch 4
A first upper wall 6 extending tangentially to the circumference of both end faces over the entire length of the notch, and a first upper wall extending parallel to the first upper wall 6 from the other side edge of the notch 4 over the entire length of the notch. The bottom wall 7 and the first top wall 6 extend from both end edges of the notch 4 respectively.
And a vertical first side wall connected to the first bottom wall 7.

The air duct 3 includes a second upper wall 8 extending downward from the leading edge of the first upper wall 6 and a second upper wall 8 extending from the leading edge of the first bottom wall 7. A second bottom wall 9 connected to the leading edge and a leading edge of the first side wall,
It comprises a second side wall connected to the second top wall 8 and the second bottom wall 9.

In this embodiment, the second bottom wall 9 of the air duct 3 includes a first portion 9a extending downward at a right angle from a leading edge of the first bottom wall 7 of the air outlet 2, and a first portion 9a. A second portion 9b extending in parallel to the first upper wall 6 of the air outlet 2 from
The third portion 9c extends upward from the second portion 9b at right angles to the leading edge of the second upper wall 8, and thus the second side wall of the air duct 3 has a trapezoidal shape. I have.

The second bottom wall 9 is partially bent at the second portion 9b to form a large number of concave portions 10.
FIG. 2 is a plan view of the embodiment of FIG. 1 as viewed from the bottom side.
As shown in FIG. 2, in this embodiment, the concave portions 10 are arranged in two rows along the length direction of the air duct 3, and
The recesses belonging to one row and the recesses belonging to the other row are arranged so as not to overlap in the width direction of the air duct 3. Note that the arrangement of each recess is not limited to this.

As shown in FIG. 1 and FIG.
0 has a circular opening and forms an angle of α = 5 ° to 20 ° with respect to a plane surrounded by the opening edge toward the inside of the ventilation duct 3 backward from a position on the tip side of the opening edge. It comprises an inclined flat circular wall portion 11 extending for some time and a wall portion 12 having a tapered conical surface extending from the remaining area of the opening edge of the recess to the periphery of this wall portion 11.
The inclined flat circular wall portion 11 is formed with a spout 13 having a circular, elliptical, square, or slit shape extending in the length direction of the air duct 3. Note that the ejection port 13 may have a shape other than these.

The blower nozzle device according to the present invention is used by being attached to a heat treatment device for performing heat treatment on a web such as a cloth or a film. The heat treatment apparatus includes a heat treatment chamber, and a web transfer path is provided in the heat treatment chamber. Then, the blowing nozzle device according to the present invention is disposed inside the heat treatment chamber and above and below the transport path.

In the blower nozzle device, the blower duct 3 extends along the width direction of the web to be conveyed, and has a second bottom wall 9.
Is arranged such that the second portion 9b is parallel to the surface of the web. Then, the web is conveyed along the conveyance path in the heat treatment chamber, and the high-temperature air supplied from the hot air supply port to the blower chamber 1 is sent by the blower fan 5 through the blower port 2 and the blower duct 3, and the ejection port is provided. From 13 hot air is blown against the web.

In this case, hot air is blown from the jet port 13 perpendicularly to the surface of the web. Therefore, meandering during the transport of the web can be prevented, and the entire surface of the web can be uniformly heated. As a result, the heat treatment of the web can be performed efficiently.
In addition, according to the present invention, since the blowing nozzle device has a simple structure, maintenance can be easily performed.

FIG. 3 is a plan view similar to FIG. 2 showing another example of the concave portion. In the example shown in FIG. 3, each recess 14
It has a rectangular opening, and a pair of opposite sides are formed by a second bottom wall.
Is arranged so as to be parallel to the side edge of the portion 9b.
The recess 14 has a flat inclined surface extending rearward from the opening edge on the front end side toward the inside of the air duct 3 at an angle of α = 5 ° to 20 ° with respect to a plane surrounded by the opening edge. A trapezoidal wall portion 15, a second flat trapezoidal wall portion 16 extending from the leading edge of the wall portion 15 at right angles to the wall portion 15 to an opening edge on the rear end side,
It is formed from an inclined flat right-angled triangular wall portion 17 which connects to the side edges of the two trapezoidal wall portions 15,16. The inclined flat trapezoidal wall portion 15 is formed with a spout 18 having a circular, elliptical, square, or slit shape extending in the longitudinal direction of the air duct 3. It goes without saying that the same effect as in the case of FIG. 2 can be obtained also in this example.

FIG. 4 is a longitudinal sectional view showing a modification of the embodiment of FIG. This embodiment differs from the embodiment of FIG. 1 only in the upper structure of the air duct. Therefore, in FIG. 4, the same components as those in FIG. According to the embodiment of FIG. 4, the second upper wall 8 ′ of the air duct 3 ′ extends in the plane formed by the first upper wall 6 of the air outlet 2, and the air duct 3 ′
It has a substantially rectangular parallelepiped internal space. In this modification, the same effect as in the embodiment of FIG. 1 can be obtained.

FIG. 5 is a longitudinal sectional view of another embodiment of the present invention. The embodiment of FIG. 5 shows the second bottom wall 9 of the air duct 3.
However, the only difference from the embodiment of FIG. 1 is that the second portion 9b is partially bent to form a large number of convex portions. Therefore, in FIG. 3, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

In the embodiment shown in FIG. 5, the convex portion 19 has a circular edge, and the convex portion 19 is formed from the rear end side of the peripheral edge.
Forward, toward the outside of the air duct 3, an inclined flat circular wall portion 20 extending at an angle of α = 5 ° to 20 ° with respect to a plane surrounded by the peripheral edge, and a peripheral edge of the convex portion 19. And a wall portion 21 having a tapered conical surface extending from the remaining area to the periphery of the circular wall portion 20.
The inclined flat circular wall portion 20 includes, for example,
An outlet 22 having a circular, elliptical, square, or slit shape extending in the length direction of the air duct 3 is formed. In this embodiment, the same effects as in the embodiment of FIG. 1 can be obtained.

FIG. 6 is a longitudinal sectional view showing a modification of the embodiment of FIG. This embodiment differs from the embodiment of FIG. 5 only in the upper structure of the air duct. Therefore, in FIG. 6, the same components as those in FIG. 5 are denoted by the same reference numerals, and description thereof will be omitted. According to the embodiment of FIG. 6, the second upper wall 8 ′ of the air duct 3 ′ extends in the plane formed by the first upper wall 6 of the air outlet 2, and the air duct 3 ′
Has a substantially rectangular parallelepiped internal space. In this modification, the same effect as in the embodiment of FIG. 1 can be obtained.

Although the preferred embodiments of the present invention have been described above, the configuration of the present invention is not limited to these embodiments. For example, the shape of the concave portion or the convex portion is not limited to that of the embodiment, and the concave portion is rearward from the front end region of the opening edge, toward the inside of the air duct,
It has an inclined flat wall portion extending at an acute angle with respect to the plane surrounded by the opening edge, and the convex portion is directed forward from the rear end region of the peripheral edge toward the outside of the air duct. It has an inclined flat wall portion extending at a constant acute angle with respect to a plane surrounded by the peripheral edge, and a spout is formed on each inclined flat wall portion of the concave portion and the convex portion. Any shape may be used as long as it is formed. Further, a concave portion and a convex portion may be formed in a mixed manner on the second portion of the second bottom wall.

[0025]

As described above, according to the present invention, in the web heat treatment apparatus, hot air can be blown perpendicular to the surface of the web, so that meandering during transport of the web can be prevented. In addition, the entire surface of the web can be uniformly heated. As a result, the heat treatment of the web can be performed very efficiently. Moreover, according to the present invention, the blowing nozzle device has a simple structure, can be manufactured at low cost, and can be easily maintained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of the present invention.

FIG. 2 is a plan view of the embodiment of FIG. 1 as viewed from the bottom side.

FIG. 3 is a plan view similar to FIG. 2, showing another configuration of the recess of FIG. 1;

FIG. 4 is a longitudinal sectional view showing a modification of the embodiment of FIG.

FIG. 5 is a longitudinal sectional view of another embodiment of the present invention.

6 is a longitudinal sectional view showing a modification of the embodiment of FIG.

FIG. 7 is a longitudinal sectional view showing a conventional example.

FIG. 8 is a longitudinal sectional view showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blow room 2 Blow opening 3 Blow duct 4 Notch 5 Blow fan 6 1st top wall 7 1st bottom wall 8 2nd top wall 9 2nd bottom wall 10,14 Recessed part 11,15 Slant flat wall Portion 13, 18 Spout 19 Convex 20 Slant flat wall portion 22 Spout

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F04D 29/40-29/56 F24F 13/06 F26B 21/00

Claims (2)

(57) [Claims] 1. A blower chamber and a blower opening to the blower chamber.
And a blower duct connected thereto, and the blower duct is disposed in the blower chamber.
The air flow generated by the blower fan
A blower nozzle device configured to supply the blower duct through and blow out from a blowout port provided in the blower duct, wherein the blower chamber has a cylindrical shape with both ends closed, and has a coaxial interior. A blower fan is arranged, a notch of a predetermined width extending over the entire length is formed on the side wall, and the blower opening extends from one side edge of the notch over the entire length of the notch at both end surfaces of the blower chamber. A first top wall extending tangentially to the circumference, a first bottom wall extending parallel to the first top wall over the entire length of the notch from the other side edge of the notch, and both ends of the notch Each edge from the edge,
A first side wall connected to the first top wall and the first bottom wall, wherein the ventilation duct has a second top wall extending forward from a leading edge of the first top wall; A second bottom wall extending forward from a leading edge of the first bottom wall and connected to a leading edge of the second upper wall; and extending forward from a leading edge of the first side wall, respectively.
A second side wall connected to the second top wall and the second bottom wall, wherein a second bottom wall of the ventilation duct is parallel to a first top wall of the ventilation opening A plurality of recesses or projections or a plurality of recesses or projections partially bent in this region.
Forming a combination , wherein the recess extends rearwardly from the front end region of the opening edge toward the interior of the air duct at a constant acute angle with respect to a plane surrounded by the opening edge. The convex portion has a constant acute angle with respect to a plane surrounded by the peripheral edge toward the outside of the ventilation duct forward from a rear end side region of the peripheral edge. A blower nozzle device having a flat inclined wall portion that extends, wherein a jet port is formed in each of the inclined flat wall portions of the concave portion and the convex portion. 2. The inclined wall portion of the recess is formed by the recess.
Backward from the tip side area of the opening edge of the
Towards the part, against the plane surrounded by the opening edge
And extend at an angle of 5 ° to 20 °.
The wall portion, forward from the rear end side region of the periphery of the convex portion,
Towards the outside of the air duct, the periphery of the convex portion
At an angle of 5 ° to 20 ° to the plane surrounded by
The blower nose according to claim 1, wherein the blower nose is extended.
Device.