JPH0719588A - Guide vane and method and apparatus for manufacture thereof - Google Patents

Abstract

PURPOSE:To enable attainment of mechanization, to reduce a pressure loss in an elbow and to obtain silencing and heat-insulating effects by a method wherein slot holes are made in an inner metal sheet out of inner and outer metal sheets supplied with a silencing material sheet interposed, the whole is subjected to bending, engaging end parts are formed by bending and a vane material thus formed is cut. CONSTITUTION:An inner metal sheet 10, an outer metal sheet 11 and a silencing material sheet 12 are supplied respectively in such a manner that the silencing material sheet 12 is positioned between the inner and outer metal sheets 10 and 11. Slot holes for increasing a silencing effect are made in the inner metal sheet 10, and the inner metal sheet 10 and the outer metal sheet 11 are subjected respectively to bending so that the radius of curvature of the inner metal sheet 10 is larger than that of the outer metal sheet. In the state of the silencing material sheet 12 being held between, then, engaging end parts of the inner and outer metal sheets 10 and 11 are formed by bending and a laminated vane material 27 thus formed by bending is cut in a prescribed length. Thereby a guide vane 2 is manufactured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to duct construction,
The present invention relates to a guide vane that reduces pressure loss of an elbow used at a corner when a duct needs to be bent to eliminate a shortage of air volume, and at the same time, achieves noise reduction, a manufacturing method thereof, and a manufacturing apparatus.

[0002]

2. Description of the Related Art As a conventional technique, an elbow is used when an angle is applied to a duct construction, and a simple flat plate guide vane in which a metal plate is curved is arranged in the elbow.

[0003]

However, the above-mentioned prior art does not consider muffling. Further, when silencing the guide vanes, one siling material was attached to each guide vane, or the silencing material was packed in the middle of the two guide vanes, but the work was difficult. However, there is a problem that no consideration is given to improving the pressure loss. In view of these circumstances, the present invention enables mechanization and automation with a simple structure so that the sound deadening material is sandwiched between the inner and outer metal sheets at the same time when the inner and outer metal sheets are formed. It is an object of the present invention to provide a guide vane, a method for manufacturing the same, and a manufacturing apparatus for the same, in which the pressure loss is reduced by changing the radius of curvature of the metal plate.

[0004]

The present invention adopts the following technical means in order to solve the above problems. According to the first aspect of the present invention, a step of supplying the inner metal sheet, the outer metal sheet, and the sound deadening material sheet such that the sound deadening material sheet is positioned between the inner and outer metal sheets, and a sound deadening effect for the inner metal sheet. A step of forming a slot hole for increasing the height, a step of bending the inner metal sheet and the outer metal sheet so that the inner tammel sheet has a larger radius of curvature, and a step of sandwiching the sound deadening material sheet between the inner and outer metal sheets. The technical means of manufacturing the guide vane was adopted from the step of bending and forming the locking end portion of and the step of cutting the laminated and bent vane material into a predetermined length. According to the second aspect of the present invention, a supply device that supplies the inner metal sheet, the outer metal sheet, and the sound deadening material sheet such that the sound deadening material sheet is located between the inner and outer metal sheets, and a slot hole in the inner metal sheet. A slot punching device, an inner metal sheet bending device that bends the inner metal sheet to have a larger radius of curvature than the outer metal sheet, and an outer metal sheet that has a smaller radius of curvature than the inner metal sheet. An outer metal sheet bending device that bends the inner and outer metal sheets with the sound deadening material sheet sandwiched between them, and a laminated vane material. The technical means of manufacturing the guide vanes by the cutting device for cutting is adopted. Further, the invention according to claim 3 employs a technical means of sandwiching a sound deadening material between an inner metal plate having a large radius of curvature and an outer metal plate having a small radius of curvature with slot holes for enhancing a sound deadening effect.

[0005]

As a result of adopting the above technical means, the present invention can reduce the pressure loss at the bent portion of the duct, have a sound deadening effect, and realize the mechanization of the production of the guide vanes.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. First, referring to FIGS. 3 and 4, the guide vanes 2 attached to the elbows used in the bent portion of the duct will be briefly described. The guide vanes 2 can be erected on the upper and lower guide vane rails 1 at appropriate intervals. A cut-and-raised portion 3 is provided on the guide vane 2, and the guide vane 2 is engaged with the cut-and-raised portion 3 to stand upright as shown in the drawing. The assembly of the guide vane rail 1 and the guide vane 2 is assembled in the elbow 4 as shown in FIG.

Next, the guide vanes 2 will be described in detail with reference to FIG. Locking end portions 7 for locking the outer metal plate 6 are bent and formed at both ends of the inner metal plate 5 having a large radius of curvature. Then, as shown in the figure, when both ends of the outer metal plate 6 having a small radius of curvature are engaged with and integrated with the locking end 7, a gap is provided between the two. The sound deadening material 8 (for example, fiberglass) or the like is held in the gap. Further, a large number of slot holes 9 are formed in the inner metal plate 5 in order to enhance the sound deadening effect. As will be described later, when the guide vane 2 is manufactured by using each coiled sheet, the inner metal sheet 10, the outer metal sheet 11, and the sound deadening material supplied from the coils 13, 14, and 15, respectively. The vane material 27 is used here as a material for the guide vanes that are formed by sandwiching the sound deadening material sheet 12 between the inner and outer metal sheets 10 and 11 while keeping the sheet 12 long, and this is set. Guide vane 2 when cut to length,
The cut sheets 10, 11, and 12 are referred to as an inner metal plate 5, an outer metal plate 6, and a sound deadening material 8, respectively.

Here, the manufacturing method and the manufacturing apparatus of the guide vane will be described in detail with reference to FIG. Reference numeral 21 is a sheet feeding portion, 22 is a hole punching portion, 23 is a sheet guiding portion, 24 is a bending portion, and 25 is a cutting portion. The supply unit 21 for each sheet includes the coils 13, 14, 15 for each sheet.
Is an uncoiler device having a drive source (not shown), and supplies each sheet according to the speed of manufacturing the vane material 27. Accordingly, each sheet can be processed while maintaining an appropriate tension, corresponding to the guide device 23, the bending device 24, and the like in the post process. However, since the bending device 24 in the subsequent process is a roll forming device, there is no problem in supplying each sheet even if it does not have a separate drive source. The punching unit 22 includes a punching device 18, and is a roll forming device that uses rolls having concave protrusions and convex protrusions, respectively. Bending part 2
Reference numeral 4 denotes a bending device 19, which bends the inner and outer metal sheets 10 and 11 with a set curvature and sandwiches the sound deadening material sheet 12, respectively.
The vane member 27 is formed by bending the locking ends 7 of 0 and 11.
Is designed to be molded. The cutting unit 25 is the cutting device 2
0, which cuts the vane material 27 to be formed into a set length.

A specific embodiment will now be described with reference to FIG. 1. As shown in the figure, the coil-shaped sound deadening material sheet 12 supported by the support columns 16 is provided on the upper coil 15 and the coil-shaped outer metal. The sheet 11 is supported by the lower coil 14, and the coil-shaped inner metal sheet 10 is supported by the coil 13 in parallel with the outer metal sheet 11. When the sound deadening material sheet 12 is pulled out and guided to the outside of the outer metal sheet 11 and further guided along the outer periphery of the inner metal sheet 10, the sound deadening material sheet 12 is divided into two inner and outer metal sheets 10, 11. The inner and outer metal sheets 1 will be guided along the outer circumference of the coils 13 and 14.
It is supplied so as to be located between 0 and 11.
The inner metal sheet 10 is provided with a slot punching device 18 for punching the slot holes 9. Furthermore, when guided by several guide wheels 17, a locking end portion 7 into which both ends of the outer metal sheet 11 are inserted is formed at both end portions of the inner metal sheet 10, and the inner and outer metal sheets 10 and 11 are A bending device 19 is provided which bends into a curved shape with different curvatures, sandwiches the sound deadening material sheet 12 therebetween, and integrates the inner and outer metal sheets 10 and 11 at the locking end portion 7. The slot punching device 18 and the bending device 19 can be variously used as long as they have existing punching and bending functions, and detailed description thereof will be omitted.

Further, the coiled inner metal sheet 10, the sound deadening material sheet 12, and the outer metal sheet 11 are arranged such that the inner metal sheet 10, the sound deadening material sheet 12, and the outer metal sheet 11 having the slot holes are finally silenced in this order. Material sheet 12
Since it suffices that it be sandwiched between the inner and outer metal sheets 10 and 11, it can be designed in various arrangements depending on the installation location. Further, the slot hole 9 of FIG.
Shows a rectangular example, but other shapes such as a circle, an ellipse, a triangle, and a square may be used so that the wind pressure is not impaired, the wind is efficiently taken into the sound deadening material 8, and the wind efficiently flows on the surface of the guide vane 2. Good. Further, the sound deadening material has a sound deadening effect, but at the same time, a heat insulating effect can be expected.

[0011]

As a result of adopting the above configuration, the present invention provides
The following effects can be obtained. (1) A lot of labor was required because one man, one by one, was manually inserted between the inner and outer metal plates.
It could be mechanized with a simple structure. (2) It was possible to reduce the pressure loss at the elbow used in the bent portion of the duct. (3) The effect of muffling is great. (4) A heat insulating effect can be expected.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of a guide vane manufacturing apparatus of the present invention.

FIG. 2 is a perspective view showing an embodiment of the guide vane of the present invention.

FIG. 3 is a perspective view showing an example of an elbow to which a guide vane used for a bending portion of the duct of the present invention is attached.

FIG. 4 is a perspective view showing an embodiment of a mounted state of the guide vane of the present invention.

[Explanation of symbols]

1 Guide vane rail 2 Guide vane 3 Cut and raised part 4 Elbow 5 Inner metal plate 6 Outer metal plate 7 Locking part 8 Silencer 9 Slot slot 10 Inner metal sheet 11 Outer metal sheet 12 Silencer sheet 18 Drilling device 19 Bending device 20 Cutting device

Claims (3)

[Claims] 1. A step of supplying an inner metal sheet, an outer metal sheet, and a sound deadening material sheet such that the sound deadening material sheet is positioned between the inner and outer metal sheets, and a method for enhancing the sound deadening effect on the inner metal sheet. A step of making a slot hole, a step of bending the inner metal sheet and the outer metal sheet so that the inner metal sheet has a larger radius of curvature, and a step of interposing the inner and outer metal sheets with the sound deadening material sheet sandwiched therebetween. A method for manufacturing a guide vane, comprising: a step of bending and forming a toe portion; and a step of cutting the laminated and bent vane material into a predetermined length. 2. A supply device for supplying an inner metal sheet, an outer metal sheet, and a sound deadening material sheet such that the sound deadening material sheet is located between the inner and outer metal sheets, and a slot for forming a slot hole in the inner metal sheet. Punching device, inner metal sheet bending device that bends the inner metal sheet to have a larger radius of curvature than the outer metal sheet, and bending process that outer metal sheet has a smaller radius of curvature than the inner metal sheet An outer metal sheet bending device, a locking end bending device that bends and forms the locking end parts of the inner and outer metal sheets while sandwiching the sound deadening material sheet, and cutting for cutting the laminated vane material. An apparatus for manufacturing guide vanes, comprising: 3. A guide vane characterized in that a sound deadening material is sandwiched between an inner metal plate having a large radius of curvature and an outer metal plate having a small radius of curvature and having a slot hole for enhancing a sound deadening effect.