JP2679428B2 - Silencer ventilation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a muffler ventilation device which is installed in the middle of a ventilation duct and performs ventilation through the ventilation duct.

[0002]

2. Description of the Related Art FIG. 9 and FIG.
In a perspective view and a sectional view showing a conventional sound deadening type ventilator disclosed in Japanese Patent No. 153362, a sound deadening box 21 and a ventilator main body 22 are attached in the middle of a ventilation duct 20. The sound deadening box 21 is configured as a box body in which a sound absorbing material 23 is stretched inside facing the air passage, and is connected to the suction side of the ventilation device body 22 via the ventilation duct 20. The ventilator main body 22 has a blower that forms a ventilation flow, and its suction side is connected to the muffling box 21 and its blow side is connected to the exhaust ventilation duct 20.

The ventilator having the above-mentioned structure constitutes a ventilation system together with the ventilation duct 20 and is suspended and fixed in a space above the ceiling to perform a ventilation function. The noise caused by the ventilation operation is absorbed by the sound absorbing material 23 of the muffling box 21, and clean ventilation is performed.

[0004]

In the conventional ventilation system as described above, since the ventilation system main body 22 does not have a silencing function, a silencing box 21 must be provided to reduce noise, and the entire ventilation system is required. Besides being large, it is troublesome to install. Further, in order to perform maintenance of the blower, the ventilation device main body 22 cannot be removed unless the connection of the ventilation duct 20 is released, so that the maintenance is extremely troublesome work. On the other hand, regarding the mute box 21,
Since it is a chamber type and has a large mass of sound absorbing material 23 such as glass wool or rock wool inside,
In particular, the muffling effect remains unsatisfactory despite the increase in the vertical dimension. In addition, in the ventilator body 22
If the suction side and the outlet side are
The inspection port of the main unit 22 is also in the opposite direction,
Therefore, is it possible to install an inspection port on the ceiling of the building?
Or, when constructing the air supply / exhaust system, there are two points on the ceiling.
I had to set up a mouth.

[0005] The present invention has been made to solve the conventional problems described above, and has as its object is to obtain an excellent silencing ventilating device of the muffling properties compact, feed
It is possible to freely change the wind direction only by changing the direction of the internal structure.
It is to obtain a sound-deadening ventilation device that can be performed, to improve the maintenance of the sound-deadening ventilation device, and to promote the improvement of the assembling property.

[0006]

In order to achieve the above object, the invention of claim 1 has an axial flow vane and a drive motor for rotationally driving the same in a cylindrical structure integrally formed by a porous structure. A blower body provided, a cover structure made of a steel plate that covers and houses the blower body by forming an air layer over the entire circumference on the outside thereof, and a blower body is opened and closed at the side of the cover structure. Inspection port that can be opened, removable inspection lid that covers this inspection port,
The cover structure is provided at both ends thereof with connecting members for connecting ventilation ducts that are connected to both ends of the blower body, and the suction side and the blow side of the blower body are provided.
It is possible to freely replace and store in the cover structure .

In order to achieve the above object, the invention of claim 2 provides a cover structure in the means according to claim 1,
It is also possible to form a cylindrical roll by joining the edges together.
, The two edges formed symmetrically on both edges to be joined.
Adopt a means to construct the inspection port by the notch .

[0008]

[0009]

According to the above-mentioned means, the noise caused by the operation of the blower main body is absorbed by the cylindrical structure of the porous structure which is the outer shell of the blower main body, and further the outside is covered with the back surface over the entire circumference. Blocked by air layer. The back air layer is a layer of air that does not flow, and exhibits a high sound deadening property together with the cylindrical structure. The installation of the blower main body is completed by storing it in the cover structure from the inspection port, and maintenance of the drive motor etc. can be carried out by removing the blower main body from the cover structure, even if the ventilation duct is connected, it can be removed as it is. Not only will it be possible to
The main body of the machine can be freely exchanged between the suction side and the blowing side.
By storing in the cover structure,
Change the air flow direction without changing the inspection port
Becomes possible.

[0010]

According to the above-mentioned means according to claim 2 ,
With the above-mentioned function according to the first aspect, manufacturing and assembling of the cover structure are facilitated.

[0012]

FIG. 1 is a perspective view of an entire silencer / ventilator showing an embodiment of the present invention, FIG. 2 is a perspective view of the entire silencer / ventilator, which is also partially broken, and FIG. FIG. 4 and FIG. 5 are exploded perspective views of the device, FIG. 4 and FIG. 5 are vertical front views showing the configuration of the muffler ventilation device with the blowing directions reversed, FIG. 6 is a vertical side view of the muffler ventilation device, and FIG. And FIG. 8 is a partially exploded perspective view showing the configuration of the main part of the muffler ventilation device.

First, the structure of the muffler ventilation device will be described with reference to these drawings. The sound-deadening ventilation device rotates an axial flow vane 2 and an axial flow vane 2 inside a cylindrical structure 1 integrally formed by a porous structure (a structure having a porous composition that provides strength as a frame and absorbs sound). Two blower bodies 4a, 4b provided with a drive motor 3 for driving
This is a configuration in which the counter-rotating blower 4 formed by connecting in series is housed and held in the cover structure 5.

The blower main bodies 4a and 4b have the same size as a whole, and the respective drive motors 3 are fixed by mounting legs 6 near one opening of each cylindrical structure 1. The rotation shaft of each drive motor 3 extends to the other opening side of each cylindrical structure 1, and the axial flow blades 2 are attached to each of them to form an axial flow blower. These axial blowers have axial flow vanes 2
The rotation direction is opposite and the air blowing direction is the same, and the fan body 4a, 4b is connected in series by the one mounting leg 6 to which the drive motor 3 is mounted, thereby forming the counter rotating fan 4.

The cover structure 5 is formed in the shape of a roll longer than the axial dimension of the steel double counter-rotating blower 4, and has a C-shape that also serves as a spacer at two positions corresponding to the total length position of the counter-rotating blower 4. It is attached to the outer circumference over the entire length of the counter-rotating blower 4 via the resin support member 7 and is formed into a tubular shape by joining the end portions with a screw. Two notches are formed symmetrically at positions corresponding to the accommodating portion of the counter-rotating blower 4 on both of the joined edges of the cover structure 5, and the cover structure 5 is molded to counter-rotate. The inspection port 8 through which the blower 4 can be taken in and out is constituted by a combination of two notches. Each axial edge of each notch is bent inward to form a flange 9 for attaching the lid.

The counter-rotating blower 4 is accommodated with the cover structure 5 open to the inside of the cover, and the cylindrical structure of the counter-rotating blower 4 is installed in the open portion of the cover structure 5 on the indoor side. A cylindrical body 10 made of the same material as the body 1 is arranged in series in the same row as the counter-rotating blower 4. Further, on the outside of the counter-rotating blower 4 of the cover structure 5, a connecting pipe 11 made of, for example, an integrally formed product of styrofoam is arranged in series in the same row as the counter-rotating blower 4. The counter-rotating blower 4, the connecting pipe 11, and the cylindrical body 10 form a straight tubular ventilation passage in the state of being arranged in the cover structure 5.

Although both ends of the cover structure 5 are open,
Each of the ring-shaped cross-sectional shapes is closed by mounting the channel-type end cover member 12. Each of the end cover members 12 has a flange on the outer peripheral side thereof which covers the cover structure 5.
It is attached by joining it to the outer circumference of and fastening it with screws. A tubular connecting member 13 for connecting a ventilation duct (not shown) to the web portion of each end cover member 12 is screwed on the center line of the counter-rotating blower 4. With such a structure, the outer periphery of the cylindrical structure 1 formed of the porous structure of the contra-rotating blower 4 is surrounded by the non-flowing air layer 14 which is a back air layer having an excellent silencing function over the entire length. Become. The sound deadening effect of the cylindrical structure 1 and the air layer 14 is high, and the outer diameter of the cover structure 5 is much smaller than that when a sound absorbing material such as glass wool is stretched, and the device becomes smaller.

A support member 7 is attached to the inspection port 8 of the cover structure 5.
The inspection lid 16 formed by tensioning the lid plate made of steel plate on the curved lid support member 15 for replenishing the open portion of the
It is detachably attached by tightening a screw to. The wiring structure 17 is integrally formed on a part of the lid supporting member 15, and the electric system wiring of the counter-rotating blower 4 is thereby formed.
The electric system is constructed by being drawn around by an electric box 18 attached to the outside of 6.

The entire muffler / ventilator is attached by holding hanging metal fittings 19 provided at the diameter positions of both ends of the cover structure 5 straddling the end cover member 12 by bolts hanging from the ceiling. The support member 7 has a structure in which an inner peripheral rib 7a and an outer peripheral rib 7b are connected by a radial bridging structure 7c as shown in the drawing, and the cylindrical body 10, the contra-rotating blower 4 and the connecting pipe 11 are connected to each other. It is designed to be easy to hold. If necessary, a packing for maintaining airtightness is provided at a connecting portion between members forming a series of ventilation passages. Further, although the counter-rotating blower 4 can be configured by a single cylindrical structure 1, if the axial length of the cylindrical structure 1 is long, not only the assemblability is deteriorated, but also the density during molding It is not preferable because the variation becomes large and the manufacturability also decreases.

In the muffler ventilation device having the above-mentioned structure, by reversing the direction of the counter-rotating blower 4 with respect to the cover structure 5, indoor air can be exhausted and outdoor air can be supplied into the room (FIG. 4). And FIG. 5). That is, double inversion type
The blower 4 can be freely exchanged between its suction side and blowout side
The cover structure 5 by storing it in the cover structure 5.
The blowing direction can be changed without changing the body 5 or the inspection port 8.
It can be changed. This makes it possible to
Therefore, an inspection port (not shown) will be provided on the ceiling of the building.
Cannot be used, or when configuring an air supply / exhaust system
All you need to do is to install one inspection port in the well. In addition,
In such a case, the cylindrical body 10 having a silencing function is always positioned in the indoor direction. The noise accompanying the operation of the counter rotating fan 4 is first attenuated by the silencing function of the cylindrical structure 1, and further shielded by the air layer 14 surrounding the counter rotating fan 4 and the cover structure 5 to the outside. It doesn't reach much.

External noise transmitted through the ventilation duct is also attenuated due to the long path of the cylindrical structure 1 and the cylindrical body 10 and difficult to reach the room. further,
Since the cylindrical body 10 having a muffling function is arranged on the indoor side, the sound traveling toward the indoor side through the ventilation passage is also attenuated, so that the muffler ventilation device is highly compact and comprehensive.
In terms of configuration, since the cover structure 5 is roll-shaped and is held in a cylindrical shape by the supporting member 7, it is easy to manufacture and easy to assemble. Since the connection with the ventilation duct is made at the connecting member 13 on the cover structure 5 side, the counter-rotating blower 4 can be assembled without operating the ventilation duct. This shows that maintenance of the contra-rotating blower 4 can be easily and easily performed without removing the ventilation duct or the cover structure 5.

That is, the counter-rotating blower 4 can be detached from the inspection port 8 by removing the inspection lid 16, and the cylinder 10 can be easily cleaned by removing the counter-rotating blower 4. Maintenance of, for example, the drive motor 3 of the counter-rotating blower 4 removed from the cover structure 5 is performed by the blower main bodies 4a and 4b.
Can be easily carried out from the end opening of each cylindrical structure 1 without disassembling the axial flow vane 2. After maintenance, the counter-rotating blower 4 should be installed at the inspection port 8
It is completed by an operation of storing the cover structure 5 in the cover structure 5. Also,
Since the structure is symmetrical in the vertical direction, upside down mounting is also allowed, and there is no restriction on the mounting position due to the restriction of the direction of the inspection lid 16 and the direction of ventilation. Furthermore, as a whole, it is not intended to muffle sound by other devices or structures, but because it has a sufficient muffling function itself, the facility is simplified and it is compatible with narrow spaces such as the space above the ceiling. .

[0023]

As described above, according to the invention of claim 1, the noise accompanying the operation of the blower main body is absorbed by the cylindrical structure of the porous structure which is the outer shell of the blower main body, and further to the outside thereof. Blocked by a back air layer over the entire length. The back air layer is a layer of air that does not flow, and exhibits a high sound deadening property together with the cylindrical structure. The installation of the blower main body is completed by storing it in the cover structure from the inspection port, and maintenance of the drive motor etc. can be carried out by removing the blower main body from the cover structure, even if the ventilation duct is connected, it can be removed as it is. As a result, it is possible to obtain a sound-muffling ventilation device that is small in size, excellent in sound-muffling property, and easy to maintain. Then, the blower body
Freely replace the inlet side and outlet side in the cover structure
By storing it, the cover structure and its inspection port
It is possible to change the blowing direction without changing
And the workability is improved.

[0024]

According to the invention of claim 2 , in addition to the effect of claim 1, the manufacturing and assembling of the cover structure can be facilitated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire silencer / ventilator of an embodiment.

FIG. 2 is a perspective view showing the entire silencer ventilation device according to the embodiment with a part cut away.

FIG. 3 is an exploded perspective view of the muffler ventilation device of the embodiment.

FIG. 4 is a vertical cross-sectional front view showing a configuration related to a blowing direction of the muffler ventilation device of the embodiment.

FIG. 5 is a vertical cross-sectional front view showing a configuration relating to a blowing direction of the muffler ventilation device of the embodiment.

FIG. 6 is a vertical sectional side view of the muffler ventilation device of the embodiment.

FIG. 7 is an explanatory diagram showing an operation at the time of maintenance of the muffling ventilation device of the embodiment.

FIG. 8 is a partially exploded perspective view of a main part of the muffler ventilation device of the embodiment.

FIG. 9 is a perspective view showing a conventional silencer type ventilation device.

FIG. 10 is a partial cross-sectional view showing a conventional sound deadening type ventilation device.

[Explanation of symbols]

1 cylindrical structure, 2 axial flow vanes, 3 drive motor, 4 double reversal blower, 4a blower body,
4b blower body, 5 cover structure, 8 inspection port,
13 connection member, 14 air layer, 16 inspection lid.

Claims (2)

(57) [Claims] 1. A blower main body comprising an axial flow vane and a drive motor for rotationally driving the axial flow vane inside a cylindrical structure integrally formed of a porous structure, and air blown over the entire circumference of the blower main body. A cover structure made of steel sheets that forms a layer, covers and stores it, an inspection opening that is opened on the side of this cover structure to allow the blower body to be taken in and out, and a removable inspection that covers this inspection opening the lid is provided at both ends of the cover structure, Ri Na includes a connecting member connecting the ventilation duct to be contacted to both ends of the blower body and the suction side of the blower body
And the blowing side can be freely exchanged and stored in the above cover structure
Silenced ventilation device made possible . 2. The cover structure is formed into a tubular shape by connecting the edges together.
Formed in a roll shape and the edges to be joined
The inspection port is constructed with two notches that are symmetrically formed on both sides.
The sound deadening ventilation device according to claim 1, wherein the sound deadening ventilation device is formed.