JP2001092466A - Silencing cylinder connecting structure for silencer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate assembly, to allow inexpensive manufacture and to maintain good performance as a silencer. SOLUTION: Through-holes 14 are formed respectively in the parts facing each other of outer cylinders 5 of two silencing cylinders 3A and 3B adjacent to each other in a perpendicular direction and pins 21 of fixtures 20A formed by fitting the pins 21 to collar bodies 24 are inserted into both through-holes 14 from their both ends. The two silencing cylinders 3A and 3B stacked on each other are fixed by the fixtures 20A without misalignment from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise reduction device for reducing noise of a fluid generated from a blower or the like, and more particularly, to a noise reduction device.
The present invention relates to a muffler connection structure in a muffler for mutually fixing a plurality of mufflers constituting a muffler.

[0002]

2. Description of the Related Art In this type of silencer, a plurality of silencer tubes each having a rectangular longitudinal section and open at both ends are arranged adjacent to each other so that each silencer tube extends in a horizontal direction. Known from. Each silencing cylinder has an outer cylinder having a rectangular longitudinal section and an inner cylinder fixed inside the outer cylinder and having a number of small holes formed therein. Glass wool and rock wool are provided between the outer cylinder and the inner cylinder. It is filled with a sound absorbing material having such sound absorbing properties, and when the fluid passes through each sound absorbing cylinder, it comes into contact with the sound absorbing material through each small hole of the inner cylinder, so that the sound is muted. I have.

[0003] The number of the silencers arranged in the horizontal and vertical directions is selected according to the flow rate of the fluid, and the number of arrangements in the longitudinal direction is selected according to the required silencing volume. It has become.

[0004] The conventional silencer has been assembled as shown in FIGS. 10 to 13.

That is, the gantry 2 is installed on the floor 1, and the number of the mufflers 3 to be used (4 × 2 = 8 in the horizontal direction, 4 stages in the vertical direction, totaling 32) on the gantry 2 Are arranged at intervals in the longitudinal direction of the silencer 3, and each frame 4 is temporarily fixed to the gantry 2.

[0006] As shown in FIG.
An outer cylinder 5 having a rectangular longitudinal section, an inner cylinder 6 fixed inside the outer cylinder and having a plurality of small holes 7, 7,.
And an end plate 8 connecting the inner tube 6 to the outer tube 5, a space 9 surrounded by the inner tube 6 and the end plate 8, and a sound absorbing material having sound absorbing properties such as glass wool or rock wool. 10 is filled.

[0007] Then, after the silencers 3 are sequentially arranged inside the respective frames 4 so as to be adjacent to each other, the respective frames 4 are firmly fixed to the gantry 2 by bolts or welding (not shown). Finally, in order to prevent some of the silencers 3 from shifting in the longitudinal direction, a plurality of silencers 3 located at both ends extend in a plurality of vertical and horizontal directions so as to be fixed to each other. The connecting plates 11 are fixed to the end plates 8 of the silencers 3 by screws 12, respectively.

[0008]

However, in the above-mentioned conventional silencer, not only must a plurality of frames 4 be fixed on the gantry 2 but also a plurality of connecting plates 11 must be fixed by screws 12 to the silencer cylinder 3. A complicated process of fixing the end plate 8 is also required, so that it takes a lot of time to assemble the silencer, and the cost of the silencer also increases.

In view of the foregoing, the present invention provides a silencer connecting structure in a silencer which can be easily assembled, manufactured at low cost, and can maintain good performance as a silencer. It is intended to be.

[0010]

According to a first aspect of the present invention, there is provided a silencer connecting structure for a silencer according to the first aspect of the present invention, wherein two silencer cylinders adjacent to each other in a vertical direction. A through hole is formed in each of the portions facing each other, and the pins of a fixture formed by fitting pins to a flange body are inserted into both through holes from both ends thereof. Then, by adopting such a configuration, the two stacked silencers can be fixed by the fixing tool without displacing each other.

A feature of the muffler connecting structure of the muffler of the present invention according to claim 2 is that a concave portion into which a flange body can be fitted is formed in an outer cylinder at an outer peripheral portion of at least one through hole of both mufflers. It is in the point. By adopting such a configuration, it is possible to fix a plurality of muffler cylinders without forming a gap corresponding to the thickness of the flange of the fixture between the outer cylinders of the two muffler cylinders. Thus, the fluid can be favorably introduced into each silencing cylinder.

A feature of the silencer tube connecting structure in the silencer of the present invention according to claim 3 is that a through hole is formed at each corner of each outer cylinder of two mutually adjacent silencer cylinders in the horizontal direction. The point is that the respective pins of the fixture formed by fitting two pins to both ends of the connecting plate are inserted into the respective through holes. Then, by adopting such a configuration, two silence cylinders adjacent in the horizontal direction can be fixed by the fixture without being displaced from each other.

A feature of the silencer tube connecting structure in the silencer of the present invention according to claim 4 is that a through hole is formed at each corner of each outer cylinder of four adjacent silencers in the horizontal direction and the vertical direction, respectively. Are formed in each through hole,
The present invention is characterized in that each of the pins of the fixture, in which the pins are fitted to both ends of the connecting plate, is inserted from both ends. Then, by adopting such a configuration, the four muffler cylinders can be fixed by the fixing tool without displacing each other.

According to a fifth aspect of the present invention, there is provided a silencer connecting structure in the silencer according to the present invention, which is characterized in that four silencers in the horizontal and vertical directions are vertically stacked in two stages and are adjacent to each other. A through hole is formed in each corner of each of the eight muffler cylinders, and four pins are fitted into each of the through holes at each end of a substantially rectangular connecting plate. At the point where the pins of the tool are inserted from both ends. Then, by adopting such a configuration, the eight muffler tubes can be fixed by the fixing tool without displacement.

The feature of the muffler cylinder connecting structure in the muffler of the present invention according to claim 6 is that the muffler cylinders have two opposing surfaces.
The outer cylinder at the outer peripheral portion of at least one of the through-holes of the muffler cylinders is formed with a concave portion into which the connecting plate can be fitted. And by adopting such a configuration,
A plurality of silencers can be fixed without forming a gap corresponding to the thickness of the connecting plate of the fixture between outer cylinders of adjacent silencers, and a fluid can be favorably introduced into each silencer. can do.

A feature of the muffler tube connecting structure in the muffler of the present invention according to claim 7 resides in that fixing members are provided at the front end and the rear end of each corresponding muffler. By adopting such a configuration, each muffler cylinder is connected to the adjacent muffler cylinder at both ends by the fixtures, so that the plurality of muffler cylinders can be more stably fixed.

[0017]

1 to 3 show an embodiment of a silencer cylinder connecting structure in a silencer according to the present invention. In the present embodiment, a rising portion 2A protruding upward is provided around the outer peripheral edge of the gantry 2 installed on the floor 1, and a plurality (5 × in the horizontal direction) is provided inside the rising portion 2A. 2 = 10, 4 steps in vertical direction, total 40
) Muffler cylinders 3 are arranged.

FIG. 2 shows three types of fixtures 20, 30, and 40 for stacking the muffler cylinders 3 at the third stage and the muffler tubes 3 at the fourth stage in FIG. 1 without lateral displacement. It is shown. These fixtures 20, 30, 40 not only fix a pair of adjacent silencers 3, 3 at the third and fourth stages shown in FIG. Eyes and 3
A pair of adjacent silencing tubes 3 and 3 are fixed to each other at the level, and a pair of adjacent silencing tubes 3 and 3 adjacent to each other in the vertical and horizontal directions are fixed to each other at each stage.

The fixture 20A of the fixtures 20A, 20B, 20C is for fixing the two silencers 3, 3 which are vertically opposed to each other.

The fixture 20A is, as shown in FIG.
The central portion in the axial direction is a cylindrical base 22, and this base 2
A pin 21 is formed in which both tip portions 23, 23 extending vertically from 2 are formed in a tapered cylindrical trapezoid shape, and the base portion 22 in the axial center of the pin 21 surrounds the pin 21. A flat flange 24 is fitted.

On the other hand, the lower wall 8A of the end plate 8 of the silencer 3A, which is fixed by the fixture 20A, and the end plate 8 of the silencer 3B.
A concave portion 13 is formed on each side of the upper wall 8B. These recesses 13, 13 are provided to prevent the flange body 24 of the pin 21 from being located outside the outer cylinders 5, 5 of the silencers 3 </ b> A, 3 </ b> B so that a gap is not formed between the silencers 3 </ b> A, 3 </ b> B. Therefore, the two silencers 3A, 3B
The total depth of the recesses 13 is larger than the thickness of the collar body 24. These recesses 13,
13 are usually formed to have the same depth dimension, but only one of the silencer cylinders 3A or 3B is formed with a concave portion 13 having a depth dimension larger than the thickness dimension of the flange body 24, and the other silencer cylinder 3 is formed.
It is also possible not to form the recess 13 in B or 3A.

Then, the recessed portion 1 of each of the silencers 3A, 3B
3, through holes 14 are formed at positions where the axial directions coincide with each other when the silencers 3 </ b> A and 3 </ b> B are stacked. The inner diameter of the through hole 14 is
Are formed to have dimensions substantially equal to the outer diameter of the base 21 so as to be fitted relatively densely.

The recess 13 and the through hole 14 are
It is similarly formed on one side of each end plate 8 provided at both ends of each of the silencers 3A, 3B. In addition, each silencer 3A, 3
On the other side of each end plate 8 at both ends of B, one of the fixtures 20A, 20B, 20C is selectively used as necessary.

According to such a fixing device 20A, one end 23 of each pin 21 of the two fixing devices 20A is inserted into each through hole 14 of each end plate 8 of the silencer cylinder 3B located below. . Then, the flange body 24 of the fixture 20A is located in the concave portion 13 located on the outer periphery of the through hole 14, and the upper portion of the flange body 24 slightly protrudes upward from the concave portion 13. The other end 23 of the pin 21 is
From above. Therefore, the silencer 3
B is lowered such that the corresponding through-holes 14 are located immediately above the respective pins 21, and the muffler cylinders 3 </ b> A stacked directly above B are lowered above the respective pins 21 of the fixtures 20 </ b> A in the respective through-holes 14. Is inserted into the other end portion 23 that protrudes.

In this manner, the silencer 3A is placed on the silencer 3C.
Can be fixed without displacement in the horizontal direction.

The fixture 20B has a total of four silencer cylinders 3C to 3C which are opposed to each other in a direction perpendicular to the longitudinal direction of the silencer cylinder 3 in the horizontal direction and in the vertical direction.
It is for fixing F mutually.

For this reason, as shown in FIG. 5, the fixture 20B has two pins 21 having the same shape as that of FIG.
Are respectively fitted to both ends of a flat plate-like connecting plate body 25 having a link-like shape.
The connecting plate 25 projects up and down with equal dimensions.

On the other hand, the upper wall 8B of the end plate 8 of the sound deadening tubes 3E, 3F fixed in the horizontal direction by the fixture 20B.
On one side, recesses 13 facing each other are formed from one ends of the silencers 3E and 3F, respectively. These recesses 13 and 13 are fixed when the silencers 3E and 3F are adjacent to each other. The connecting plate 25 of 20B is formed in a shape to be fitted. The depth of each recess 13 of each of the silencers 3E and 3F is formed to be slightly smaller than the thickness of the connecting plate 25.

Then, the concave portion 1 of each of the silencers 3E, 3F
3, through holes 14 are respectively formed so as to have an interval equal to an interval between the pins 21 and 21 of the fixing tool 20 </ b> B when the silencers 3 </ b> E and 3 </ b> F are arranged adjacent to each other. The inner diameter of the through-hole 14 is formed to be substantially equal to the outer diameter of the base 21 so that the base 22 of the pin 21 is fitted relatively densely.

On the other hand, the lower wall 8A of the two silencers 3C and 3D stacked above the silencers 3E and 3F also has recesses 13 and through holes in the silencers 3E and 3F. A recess 13 and a through-hole 14 are formed at positions facing the surface 14.

According to such a fixing device 20B, as shown in detail in FIGS. 6 to 8, the fixing device is provided in each through hole 14 of each end plate 8 of the two silencer cylinders 3E and 3F located below. 20B
Of one of the pins 21 is inserted. Then
The connecting plate 25 of the fixture 20B is located in the concave portion 13 located on the outer periphery of the through hole 14, and the upper portion of the connecting plate 25 slightly protrudes upward from the concave portion 13.
The other end 23 of each pin 21 is connected to the connecting plate 2.
5 will protrude upward. Therefore, the silencers 3C and 3D stacked directly above the silencers 3E and 3F are lowered such that the corresponding through holes 14 are located immediately above the pins 21. Fixture 20
The other tip 23 projecting above each pin 21 of B is inserted.

In this manner, the two muffling tubes 3C and 3D can be fixed on the two muffling tubes 3E and 3F without being displaced in the horizontal direction by the fixture 20B.

It is also possible to fix only two adjacent silencers 3 in the horizontal direction by the fixture 20B.

Next, the fixing device 20C connects the four silencer cylinders 3 facing each other in the longitudinal direction of the silencer cylinder 3 in the horizontal direction and in a direction orthogonal to the longitudinal direction.
This is for fixing a total of eight silencer cylinders 3G to 3N stacked on each other to each other.

For this reason, as shown in FIG. 9, the fixture 20C has four pins 21 having the same shape as that of FIG.
Are fitted to the respective corners of a substantially rectangular connecting plate 26 having projecting portions 26 at the four corners, respectively, and each pin 21 projects in the same size as the upper and lower sides of the connecting plate 26. A rectangular opening 27 is formed in the center of the connecting plate 26.

On the other hand, on one side of the upper wall 8B of the end plate 8 of each of the four silencers 3K to 3N fixed in the horizontal direction by the fixture 20C, recesses 13 facing each other are provided with respective silencers. 3K to 3N are formed from one ends thereof, and each of these recesses 13 has a shape such that the connection plate 26 of the fixture 20C is fitted when the silencers 3K to 3N are adjacent to each other. Is formed. For this reason, substantially rectangular raised portions 28 are left at the corners of each of the recesses 13, and when the four raised portions 28 in each of the noise reduction cylinders 3K to 3N are adjacent to each other, the connection plate 26 Opening 27
It becomes the shape which fits. In addition, each of the silencers 3K to 3K
The depth of each of the N recesses 13 is formed to be slightly smaller than the thickness of the connecting plate 26.

Then, the concave portions 1 of the silencers 3K to 3N are provided.
3, through holes 14 are formed so as to have an interval equal to the interval between the two pins 21 and 21 of the fixing tool 20C when the silencers 3K to 3N are arranged adjacent to each other. The inner diameter of the through hole 14 is
Are formed to have dimensions substantially equal to the outer diameter of the base 21 so as to be fitted relatively densely.

On the other hand, each of the lower walls 8A of the four silencers 3G to 3J stacked above the silencers 3K to 3N also has recesses 13 and through holes of the silencers 3K to 3N. A recess 13 and a through-hole 14 are formed at positions facing the surface 14.

According to such a fixture 20C, one end 23 of each pin 21 of the fixture 20C is inserted into each through hole 14 of each end plate 8 of the four silencers 3K to 3N located below. insert. Then, the connecting plate 26 of the fixture 20C is located in the recess 13 located on the outer periphery of the through hole 14, and
The upper part of the connecting plate 26 slightly protrudes upward from the recess 13. The other end 23 of each pin 21 protrudes upward from the connecting plate 26.
Therefore, the silencer cylinders 3G to 3J stacked directly above the silencer cylinders 3K to 3N are lowered so that the corresponding through holes 14 are located immediately above the pins 21. Then, the other distal end 23 projecting above each pin 21 of the fixture 20C is inserted.

In this manner, the four muffling cylinders 3G to 3J can be fixed on the four muffling cylinders 3K to 3N by the fixing device 20C without being displaced in the horizontal direction.

According to the silencer tube connecting structure in the silencer of the present embodiment described above, each silencer tube 3 constituting the silencer is provided.
Are fixed to each other by the three types of fixtures 20A, 20B, and 20C, so that the frame 4 and the connecting plate 11 as in the related art are not required, and the assembling process is simplified.
The silencer can be manufactured at low cost.

The flanges 24 and the connecting plates 25 and 26 of the fixtures 20A, 20B and 20C are provided in the recesses 13 of each muffler cylinder 3.
Since there is no gap between the outer cylinders 5 and 5 of the adjacent silencers 3 and 3, the fluid can be reliably introduced into each silencer 3.

Note that the present invention is not limited to the above-described embodiment, and various modifications can be made as necessary.

[0044]

As described above, according to the present invention, the assembling can be performed easily, can be manufactured at a low cost, and can maintain good performance as a noise reduction device.

That is, a through hole is formed in each of mutually facing portions of the outer cylinders of two muffler cylinders adjacent to each other in the vertical direction, and a pin is fitted to a flange body in each of the through holes. By inserting the pins of the tool from both ends, the two stacked silencers can be fixed by the fixture without displacement.

Further, if a concave portion is formed in the outer cylinder at the outer peripheral portion of at least one of the through-holes of both muffler cylinders so that the flange body can be fitted, the flange member of the fixture is provided between the outer cylinders of the two muffler cylinders. A plurality of silencers can be fixed without forming a gap corresponding to the thickness of the silencer, and a fluid can be favorably introduced into each silencer.

Further, a through hole is formed in each corner of each outer cylinder of the two silencers adjacent to each other in the horizontal direction, and two pins are formed in each through hole at both ends of the connecting plate. By inserting the respective pins of the fixing tool with the fitting, the two noise reduction cylinders adjacent in the horizontal direction can be fixed by the fixing tool without displacing each other.

Further, through holes are formed at the respective corners of the outer cylinders of the four silencer cylinders adjacent to each other in the horizontal direction and the vertical direction, respectively.
By inserting the respective pins of the fixing tool having the pins fitted to both ends of the connecting plate body from both ends thereof, the four muffler cylinders can be fixed by the fixing tool without displacing each other. .

Also, through holes are provided at each corner of each of the eight adjacent silencing cylinders formed by vertically stacking four silencing cylinders vertically and horizontally in two stages in the vertical direction. Are formed, and each pin of a fixture formed by fitting four pins to each end of a substantially rectangular connecting plate body is inserted into each through hole from both ends thereof, thereby forming eight pieces. The muffler can be fixed by the fixing tool without displacement.

Further, the outer cylinder at the outer peripheral portion of at least one of the through holes of the two muffler cylinders facing each other is
By forming a recess in which the connecting plate can be fitted, a plurality of silencing tubes can be fixed without forming a gap corresponding to the thickness of the connecting plate of the fixture between outer cylinders of adjacent silencing tubes. Therefore, the fluid can be favorably introduced into each muffler.

Further, if the fixing members are arranged at the front end and the rear end of each corresponding silencer, respectively, each silencer is connected to the adjacent silencer at both ends by the fixings. Therefore, the plurality of mufflers can be fixed more stably.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a silencer tube connecting structure in a silencer according to the present invention.

FIG. 2 is a view taken along the line AA in FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is an exploded perspective view of a main part showing an embodiment of a silencer cylinder connecting structure using the first fixing device of FIG. 1;

FIG. 5 is an exploded perspective view of a main part showing an embodiment of a muffler cylinder connecting structure using the second fixture of FIG. 1;

6 is a sectional view taken along line BB of FIG. 7 showing the embodiment of FIG. 5;

FIG. 7 is a sectional view taken along line CC of FIG. 6;

8 is a sectional view taken along line DD of FIG. 7;

FIG. 9 is an exploded perspective view of a main part showing an embodiment of a silencer cylinder connecting structure using the third fixture of FIG. 1;

FIG. 10 is a front view showing a conventional silencing cylinder connection structure.

FIG. 11 is a plan view of FIG. 10;

12 is a right side view of FIG.

FIG. 13 is a cross-sectional view of a main part of FIG. 10;

[Explanation of symbols]

 Reference Signs List 1 floor 2 gantry 3 (3A to 3N) muffling cylinder 5 outer cylinder 6 inner cylinder 8 end plate 10 sound absorbing material 13 concave part 14 through hole 20A to 20C fixing tool 21 pin 24 flange body 25, 26 connecting plate body 27 opening 28 ridge

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahiro Kanazaki 960 Tokukura, Shimizu-cho, Sunto-gun, Shizuoka F-term (reference) 5D061 CC20 DD01

Claims (7)

[Claims] 1. A plurality of silencing tubes each having a rectangular cross section open at both ends are continuously provided, and a silencing material disposed in each silencing tube silences a fluid passing through each silencing tube. In the above-described silencer, through holes are respectively formed in mutually facing portions of outer cylinders of two silence cylinders adjacent to each other in the vertical direction, and a pin is fitted to a flange body in both the through holes. A sound absorbing cylinder connecting structure in a sound deadening device, wherein the pins of the fixing device are inserted from both ends thereof. 2. The recess according to claim 1, wherein the outer cylinder at the outer peripheral portion of at least one of the two silencing cylinders has a recess in which the flange body can be fitted. Silencer cylinder connection structure in silencer. 3. A plurality of silencer tubes each having a rectangular cross section open at both ends are connected in series, and a silencer provided in each muffler tube silences a fluid passing through each muffler tube. In the above silencer, a through hole is formed in each corner of each outer cylinder of two silence cylinders adjacent to each other in the horizontal direction, and two through holes are formed in each through hole and at both ends of the connecting plate. A sound absorbing cylinder connecting structure in a sound deadening device, wherein each of the pins of the fixing tool having the above-mentioned pin fitted therein is inserted. 4. A plurality of silencing tubes each having a rectangular cross section open at both ends are continuously provided, and a silencing material provided in each silencing tube silences a fluid passing through each silencing tube. In the above silencer, a through hole is formed at each corner of each outer cylinder of four silence cylinders adjacent to each other in the horizontal direction and the vertical direction, and both ends of the connecting plate body are formed in each through hole. A sound absorbing cylinder connecting structure in a sound deadening device, wherein each of the pins of a fixture having two pins fitted into a portion is inserted from both ends thereof. 5. A plurality of silencing tubes each having a rectangular cross section open at both ends are continuously provided, and a silencing material disposed in each silencing tube silences a fluid passing through each silencing tube. In the above-described muffler, four mufflers in the horizontal and vertical directions are stacked in two stages in the vertical direction, and each muffler is formed at each corner of eight outer mufflers adjacent to each other. A through-hole is formed, and each pin of a fixture formed by fitting four pins to each end of a substantially rectangular connecting plate body is inserted into each through-hole from both ends thereof. Silencer connecting structure in the silencer to be used. 6. A concave portion in which the connection plate can be fitted is formed in an outer cylinder of an outer peripheral portion of at least one of the two silencing cylinders of each of the silencing cylinders facing each other. The silencer cylinder connecting structure in the silencer according to any one of claims 3 to 5, characterized in that: 7. The device according to claim 1, wherein the fixing tool is provided at a front end and a rear end of each of the mufflers. Silencer cylinder connection structure in silencer.