JPH07104033B2 - Square muffler for air conditioning duct - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rectangular sound deadening body used for a spout and a refraction portion of an air conditioning duct arranged in a building.

[0002]

2. Description of the Related Art As a typical shape example of a square muffler,
The anemo box shown in FIG. 8A and the line diffuser box shown in FIG. 8B are well known.
Conventionally, these silencers are hollow boxes in which glass wool with a substantially constant thickness is attached to the inside of the outer panel, and are suspended from the ceiling and connected to ducts for air conditioning to receive airflow from the inlet and discharge it from the outlet. , It is used as an air-conditioning member that changes the direction of cold air or warm air and blows it out into a living area. With this structure, it fulfills the necessary functions of sound absorption, heat insulation, and incombustibility, and is one of the essential devices for the interior of high-rise buildings.

The typical shape of a conventional square muffler can be well understood from Japanese Patent Application Laid-Open No. 2-309093 shown in FIG. The figure shows an example of a muffling elbow, which is an improvement of a frame body 101 used for connecting to front and rear air conditioning ducts (not shown). That is, the box body is an outer plate 10 made of a steel plate.
2 and glass wool 1 with a certain thickness inside
It is composed of 03 and the main point is that the frame is attached to the front and rear connecting parts of the box with screws, and by this, the tacks and washers that are used more for fixing the sound deadening body than before, He claims that the silencer can be easily assembled because there are few corner members to assemble the inner frame.

However, recently, a technique for providing a glass wool molded plate in place of an indeterminate type glass wool has been developed, and the problems of the conventional technique, which is difficult to handle at the time of assembly and has poor workability, have been greatly improved. In this case, the glass wool molding plate itself is strong enough to withstand handling during transportation and installation work, so the outer plate that was required for the silencer is unnecessary, and the glass wool molding plate remains exposed. It became possible to construct a box-shaped body. Instead of omitting the outer plate, as a reinforcement to maintain the overall shape of the rectangular box body, a steel reinforcing angle is applied to each corner of the box shape and the glass wool molding plate is sandwiched from inside and outside. It is necessary to hold it. FIG. 10 shows a simple example of the conventional silencer assembly. First, a square frame is assembled by screwing a steel angle to form the top and bottom of a rectangular box. Or form by spot welding. Next, as shown in the figure, form the ridge line that hits each corner of the square 4
The inner frame member 104 and the outer frame member 105 of the book are set up at the four corners of the frame body at the bottom with the wall thickness of the glass wool molding plate separated, and fixed by screws or welding. Fit the glass wool molding plate into the bottom frame to form the bottom of the box, slide the glass wool molding plate between the inner and outer frame materials that have been erected to form the four sides, and finally The frame on the top is placed on the opening and fixed by screws, welding, etc., and the glass wool molded plate is fitted into the frame to complete the box-shaped silencer. Meanwhile, the figure
Reference numeral 11 relates to a connector for insulating ducts.
Fig. 6 shows the prior art of Japanese Patent No. 6 publication, in which a metal plate is formed into a U-shape at right angles.
Base surface 14a and both side surfaces of the elongated element 11a bent once
(Legs) 16a penetrate a large number of holes 101 at equal intervals to
Make sure that the insulating plate 12a to be tied can be fitted between both sides.
The rivet 102 is not inserted into the hole drilled on the base surface of the element 11a of
Fasten back to back using a gutter. Locked like this
Since the two elements 11a form an H shape,
Insert the insulating plate 12a from both sides and penetrate both sides
The staple 10 is hung from the hole 101 to the outside of the element 11a.
Stick 3 into the heat insulating plate and fix. Further aspects of the element
16a and the upper surface of the staple 103 at the end are covered.
Adhesive tape 104 is attached to the surface to protect the outer surface.
I am collecting. This configuration, as suggested in Figure (A)
Rivets on each element for various shapes of joints
By rearranging the elements by changing the positional relationship of fastening
There is a feature that it can respond, and the strength of the connecting part of the insulating plate
In this regard, the conventional seam between insulating plates can be covered only with adhesive tape.
Compared to the overlaid state, it joins much stronger,
In a straight line, it is not affected by its own weight.
It is said that it has been combined.

[0005]

Comparing the prior art shown in FIG. 9 with the prior art shown in FIG. 10, the latter does not require a steel outer plate to form the outer surface of the box, and It is a fact that labor can be saved because the work of attaching wires, screws, screw bolts, etc. to attach glass wool to the plate with a certain thickness is eliminated. It is also possible to mass-produce the top and bottom frames and the side inner and outer frames in advance, assemble them halfway and transport them to the site, so it is admitted that a considerable rationalization will be realized. However, by using glass wool as a molded plate, despite the fact that it has been improved to a fixed shape that can be easily transported and installed from the conventional shape that is difficult to handle in an indeterminate shape, The fact that it is still necessary to bear a large number of man-hours and costs for manufacturing is a major issue that requires strong improvements in the field. It can be said that spot welding and tightening of a large number of screws are complicated processes that cannot be ignored in recent high-rise buildings with many sound deadening points.

Further, in the prior art quoted in FIG.
The tightening of the bare materials requires rivet manual work,
The same number of stays can be hung from the multiple holes on the side of the
Insert the pull and fix the insulating plate so that it does not move.
I have to. Then attach an adhesive tape on top of it
The work of covering the entire connecting portion continues. Present
How much time is required for this complicated manual work on the ground,
Workability without needing to estimate whether it can contribute to reduction of man-hours
Has to be evaluated as almost meaningless as far as the improvement of
Absent. Moreover, it is only strengthened by it.
Compared with the conventional level where adhesive tape was attached to the
Therefore, the above-mentioned air-conditioning ducts are required at the time of construction and use.
It cannot be an argument based on strength during use. In order to solve the above-mentioned problems, the present invention provides a novel air-conditioning duct rectangular muffler that can be completely installed locally with almost one touch without using any screws and of course without any welding work. To aim.

[0007]

A square muffler for an air-conditioning duct according to the present invention is formed by glass wool molding on each side of a rectangular box body.
L-shaped steel made from a plate with corners where each surface intersects
In contrast to the basic configuration of attaching and reinforcing the belt body of No. 3, the roll frame 11 having a shape in which a U-shape having a vertical cross-section and a U-shape having a horizontal cross-section are connected with one side shared, A rectangular cylindrical body 1 assembled by inserting the end faces of the glass wool molded plate 12 into the hollow portion of the character in a direction perpendicular to each other, and the rectangular cylindrical body 1.
Outer frame member 21 and glass wool molding plate 22 on both opening surfaces 13 of
Of the composite plate 2 in which the inner frame member 23 and the inner frame member 23 are overlapped
The outer side surface 14 and the inner side surface of the roll frame 11
The fitting protrusions 15 and 17 protruding from the
The outer frame member 21 and the inner frame member 23 are engaged with the bent surfaces, respectively.
At the same time, another locking protrusion 18 protruding from the inner surface 16
The above-mentioned problems are solved by protruding above the inner frame material surface.
It was In this case, one of the glass wool 12 may be divided into strips and fitted into the roll frame with a gap therebetween to form the long outlet portion 4.

More specifically, fitting protrusions 15 are provided in the center of the outer side surface 14 of the roll frame 11 near both ends thereof, and locking projections 18 are fitted near both ends of the outer side surface 14 and another side surface 16. A fitting protrusion 17 and a fitting protrusion 15 on the outer surface 14 are provided side by side in the fitting direction of the glass wool molding plate 12.
The fitting projection 17 on the side surface 16 is fitted to the fitting surface 25 of the composite plate inner frame member 23 and the locking projection 18 is fitted. Most preferably, the flat surface 27 of the inner frame member is locked.

[0009]

1 is one of the embodiments of the present invention. Also, FIG.
[FIG. 3] is a perspective view showing only a roll frame in the embodiment. The operation of the present invention will be described with reference to the drawings. The outer frame member 21 is a thin steel plate and is bent at its four sides inward at right angles to form a bent surface 24 on each side, and the center thereof is punched out, and a mounting hole 28 for fitting the cylindrical body 3 for inlet or outlet is fitted.
Is formed. The roll frames 11 shown in detail in FIG. 2 are engaged with the four corners of the outer frame member 21 to form ridge lines on the side surface of the cylinder. As shown in FIG. 2, the roll frame 11 has a cross section in which a vertical U-shape and a horizontal U-shape are connected with one side shared, and the end face of the glass wool molding plate 12 is fitted into the hollow of the U-shape. The prismatic cylinder 1 is formed by incorporating them. Outer frame material 2
A glass wool molding plate 22 is inserted on the top of 1, and an inner frame 23 is fitted to the inner peripheral surface of the glass wool molding plate 22. Outer frame material 21, glass wool molding plate 22, and inner frame body 2
3 and the whole are overlapped with each other to engage with the roll frame 11 as an integrated composite plate 2, and the opening surface of the rectangular cylinder 1 is firmly connected to the composite plate 2 through the engagement of these frame bodies to form a bottom surface. Becomes The outer frame member 21, the glass wool molding plate 22, and the inner frame member 23 forming the top surface are also engaged with each other at the end portion of the roll frame 11 of the rectangular cylindrical body to form a complete box body like the bottom surface. ing. Assembly of the box by joining these faces
Is the outer side surface 14 and the inner side surface 1 of the roll frame 11.
The fitting protrusions 15 and 17 protruding from the
The outer frame member 21 and the inner frame member 23 are engaged with the bent surfaces, respectively.
And maintain a square shape, and project on the inner surface 16.
Another locking projection 18 protrudes on the inner frame material surface and is attached to the top and bottom surfaces.
Since it acts as a stopper against the assembled square
The cylinder and the composite plate are fixed to prevent rattling and swing,
Even if an external force such as shock or vibration is applied to the box, the mating will be disengaged.
There is no risk that the shape will collapse. That is, a box shape is assembled.
Does not require any components to stand up
The faces are assembled to each other only by the stopping action and their shape
The most distinctive feature is that it retains its shape , and since it has such a unique structure, it is a perfect box body without tightening screws or screw bolts or welding work such as spot welding at the factory or on site. Can be assembled and only slightly requires screwing to attach to the building structure.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 is an exploded perspective view of a prismatic cylindrical body 1 and a composite plate 2 which engages with an opening surface 13 at a lower portion of the embodiment of the present invention. The most technical feature of the present invention is the simple and convenient engagement relationship between the composite plate 2 and the prismatic cylinder, which is that the surfaces constituting the prism are firmly joined with almost one touch. Can also be said. The most preferable example of the engagement is shown in FIGS. 4A, 4B, and 4C are an enlarged front view and vertical and horizontal cross-sectional views of the fitting protrusion 15 projecting near the upper and lower ends of the outer surface 14 of the roll frame 11 of FIG. 5A and 5B are a front view and a vertical cross-sectional view of a fitting protrusion 17 and a locking protrusion 18 which are provided near the upper and lower ends of the side surface 16 different from the outer side surface. It is the outer frame member 21 and the inner frame member 23 of the composite plate 2 that are fitted or locked with these protrusions.
That is, as shown in the cross-sectional view of the engaged state in FIG. 6, the fitting protrusion 15 projecting from the outer surface 14 of the roll frame 11 is inserted into the fitting hole 25 formed in the bending surface 24 of the outer frame member 21. Fitting projection 1 fitted and protrudingly provided on another side surface 16 of the roll frame 11
7 is fitted with the bending surface 26 of the inner frame 23. Inner frame 2
Since 3 is made by bending a thin steel plate, the bending surface 26 retains some flexibility. Therefore, the roll frame 11 is fitted to the outer frame member 21, the glass wool molding plate 12 is fitted to the roll frame 11, and the glass wool molding plate 22 is fitted to the outer frame member 21, respectively.
When the inner frame member 23 slides down from above along the side face 16 of the inner frame member 23, the tip of the bending surface 26 of the inner frame member 23 is locked by the locking projection 1.
The bent surface 26 is pushed by the inclination of the locking projection and is deformed inward so as to move downward and fit into the fitting projection 17, while being released from the pressing of the locking projection. And returns to the original right angle, and the end of the upper inner surface 27 is pressed by the locking projections 18 and is restrained by both projections to fix the position.

FIG. 7 shows another embodiment of the present invention, which is a rectangular muffler called a line diffuser box at the spouting part of an air conditioner. In this case, unlike the previous example, the horizontal rectangular cylinder 1 and the two composite plates 2 that engage with both openings of the horizontal rectangular cylinder 1 form an outlet portion 4 having a long bottom surface. That is, this surface is not a single square plate, but long glass wool molding plates 41 and 42 divided into two sheets form a long opening with a gap (spouting port) therebetween, and two glass wool molding plates are fitted. A frame plate 43A divided into a plurality of parts,
43B. ． ． According to the previous example, one-touch engagement molding is performed. Basically, all shapes currently used as a rectangular sound deadening body can be applied to any case by appropriately adjusting even the shapes of partial members.

[0012]

As described above, the present invention provides the excellent means for forming the rectangular box body in order to maximize its advantages by utilizing the technical background of providing the glass wool forming plate as described above. Regardless of factory or site, the assembly can be done with almost one-touch, achieving a remarkable improvement in productivity. Assembly and installation can be done in the same way by inexperienced people according to a simple manual, and since there is no variation in quality due to individual differences, it is extremely effective in increasing the reliability of air conditioning work.

[Brief description of drawings]

FIG. 1 is an exploded perspective view illustrating assembly of an embodiment of the present invention.

FIG. 2 is a perspective view showing a roll frame 11 of the embodiment.

FIG. 3 is an exploded perspective view showing an assembled rectangular cylinder and a composite plate 2.

FIG. 4 is a front view (A), a vertical sectional view (B), and a horizontal sectional view (C) showing a part of a roll frame 11.

FIG. 5 is a front view (A) and a longitudinal sectional view (B) showing another part of the roll frame 11.

6 is a vertical cross-sectional front view illustrating an engagement state between the roll frame 11 and the composite plate 2. FIG.

FIG. 7 is an exploded perspective view illustrating assembly of another embodiment of the present invention.

8 (A) and 8 (B) are perspective views showing two shapes of a rectangular silencer for an air conditioning duct.

FIG. 9 is a vertical cross-sectional front view illustrating one of the conventional techniques.

FIG. 10 is a vertical sectional front view showing another conventional technique.

FIG. 11 is an overall perspective view showing still another conventional technique.
(A), a partial perspective view (B), a partial vertical sectional view (C)
It

Claims (3)

[Claims] 1. A glass wool molding plate on each side of a rectangular box body
L-shaped frame made of steel to the corner part that is formed and intersects each surface
Smell of rectangular air-conditioning duct for air-conditioning duct to attach and reinforce body
Te, mutual cross section of vertical U-shaped and sideways U and a shape bound covalently to the side of the roll frame 11, the end face of the glass wool molded plate 12 to shape the hollow portion of the co respectively A rectangular tube body 1 assembled by fitting in a right angle direction to the two, and two composite plates in which an outer frame member 21, a glass wool molding plate 22 and an inner frame member 23 are respectively stacked on both opening surfaces 13 of the rectangular tube body 1. 2 is joined to the outer side surface 14 of the roll frame 11 and
Fitting protrusions 15 and 1 which are respectively provided on one inner surface 16
Reference numeral 7 denotes a bent surface of the outer frame member 21 and the inner frame member 23 and
Each of them is locked and another locking projection is provided on the inner surface 16
A rectangular muffler for an air-conditioning duct, characterized in that the raised part (18) is formed by projecting above the inner frame material surface . 2. The frame body 43A according to claim 1, wherein only a specific one of the glass wool molding plates fitted into the rectangular tube body 1 is divided into two strips, and a space is formed between them.
43B. ． ． A rectangular muffler for an air-conditioning duct, characterized in that it is fitted inside to form a long outlet portion 4. 3. The rolling projection according to claim 1, wherein a fitting projection 15 is provided at a center near one end of one outer side surface 14 of the roll frame 11 and near both ends of the outer side surface 14 and another side surface 16. The engaging projections 18 and the fitting projections 17 are provided side by side in the fitting direction of the glass wool molding plate, and the fitting projections 15 of the outer surface 14 are bored in the bending surface 24 of the outer frame member 21 of the composite board 2 to form a fitting hole 25. And the fitting protrusion 17 on the side surface 16 fits on the bending surface 26 of the inner frame member 23 of the composite plate 2 which maintains a little flexibility, and the locking protrusion 18 engages on the flat surface 27 of the inner frame member. Square muffler for air-conditioning duct characterized by being stopped.