JP2000356385A - Sound insulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain a sound shielding or insulating effect at any position in a room, especially including glass windows and glass doors, without causing any damage on the lighting or appearance. SOLUTION: An air delivery unit 100 incorporates a motor 101 driven fan 102, e.g. a centrifugal motor fan, an impeller (fan type) motor fan, or an air compressor, and delivers air from the air outlets 103 of two air discharge pipes 105a, 105b in order to produce a stripe-like air flow 1. Furthermore, an air accumulator (air reservoir) 700 is inserted between the fan 102 and the air outlet in order to settle the stripe-like air flow 1 furthermore.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a soundproofing device.

[0002]

2. Description of the Related Art In order to maintain quietness in a living space such as a room of a house or office, as a technique for blocking or reducing the intrusion of noise from the outside, the surface of a wall surrounding the living space or the wall thereof is used. It is common practice to arrange a so-called sound insulating material having a sound insulating effect or a sound insulating effect inside the inside.

By the way, such a sound insulating material is generally manufactured for use inside a wall, and is formed of an opaque material, so that it is disposed, for example, in a glass window or a glass door. It is impossible.

[0004]

However, in practice, much of the external noise often enters from such a glass window or glass door.

[0005] For this reason, although it is possible to obtain a sound insulating effect by arranging a sound insulating material on the wall surface, the sound insulating material is arranged on other glass windows and glass doors where noise is apt to enter. Since it is not possible, there is a problem that noise enters from that portion, and the sound insulation effect or the soundproof effect is significantly impaired.

As a sound insulation measure conventionally considered to be the simplest and most effective against noise invading from such a glass window or a glass door, a thick curtain is hung on that part. There is known a method of closing the cover to obtain a sound insulation effect.

[0007] However, covering a site, such as a glass window or a glass door, provided for enabling daylighting or an external scenery to be covered with a curtain means that even if a sound insulation effect can be obtained, it is not possible to obtain a sound insulation effect. There was a problem that the original purpose of the part, such as lighting and the outside scenery, was sacrificed.

The present invention has been made in order to solve such a problem, and an object of the present invention is to improve the lighting of a glass window, a glass door, and the like, and a view of such a place. An object of the present invention is to provide a soundproofing device capable of obtaining a soundproofing or soundproofing effect at any position in a room.

[0009]

SUMMARY OF THE INVENTION The soundproofing device of the present invention is provided with a blow-off port for blowing out air, and blows out the air from the blow-off port to reduce the propagation of sound waves. An air blowing device for forming a flow of air;
An air suction device that is provided with a suction port for sucking the air, that is opposed to the air blowing device at a distance from the air blowing device, and that sucks the flow of the air blown from the air blowing device. are doing.

That is, according to the soundproofing device of the present invention, a band-like air flow having a speed and a thickness that attenuates the propagation of sound waves between the air blowing device and the air suction device is formed. This band can attenuate or block noise that is going to propagate through it.

Furthermore, at this time, since the noise is blocked by the band of the transparent air flow, even if it is installed on a window or the like where the noise easily enters, it does not block the scenery or lighting from the window. Therefore, it is possible to effectively block only external noise.

[0012] The soundproofing device of the present invention may further include a silencer device for attenuating or silencing a sound generated when the air passes through at least one of the outlet and the inlet.

That is, when noise such as a so-called wind noise is generated particularly when the air blowing device blows out the air or when the air suction device sucks the air, it is possible to shut off the outside noise. In addition, noise generated by the device itself may disturb the silence in the room.

Therefore, in such a case, a silencer device is provided at the outlet of the air blowing device, and the sound generated by the device itself is silenced, whereby the silence in the room can be more effectively realized. .

The soundproofing device of the present invention may further include adding steam to the air blown from the air blowing device to improve the attenuation rate of the propagation of the sound wave in the flow of the band-shaped air.

That is, in the present invention, the band-shaped air flow has a more effective sound wave attenuation or blocking effect with air containing more water vapor than with dry air. The person confirmed by experimenting with various experiments. As described above, by adding steam to the flow of the band-shaped air, the noise blocking function can be further improved.

In the soundproofing device of the present invention, the air blowing device and the air suction device may be formed so as to be attached to at least one of a window, a door, and a wall surface in a room.

That is, it may be necessary to take sound insulation measures also on a glass window, a door such as a sliding door which is required to be made thin, a thin wall or an entrance. However, since it is substantially difficult to make a conventional sound insulating material in those portions, it was impossible to insulate those portions.

However, according to the soundproofing device of the present invention, the soundproofing device is provided also on a glass window, a thin door or a wall surface, and a band-like air flow is formed at the position, so that the soundproofing device at that position is formed. Sound insulation can be achieved.

Further, in the soundproofing device of the present invention, the air blowing device and the air suctioning device may be formed so as to be able to be attached to an outdoor place where soundproofing is required. Such outdoor locations include, for example, when there is a noise source inside the building such as near the entrance of a factory, or along various transportation such as expressways and railways,
The present invention can be suitably applied.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a diagram showing a configuration of a main part of the soundproofing device. FIG. 2 is a view showing an example of a case where the soundproofing device is arranged around a glass window in a room to perform sound insulation in a portion of the glass window, and FIG. It is a figure which shows an example in the case of arrange | positioning at the front and performing the sound insulation of the door.

This soundproofing device has an air blowing device 100 for blowing air at a predetermined flow rate so as to form a band-shaped air flow 1 having a predetermined thickness and width, and a distance from the air blowing device 100. And an air suction device 200 that sucks the flow 1 of the air blown out in a band shape.

The air blowing device 100 has a built-in blower 102 which operates by using a motor 101 such as a centrifugal electric blower, an impeller (fan) electric blower, or an air compressor as a power source. Two air discharge pipes 105 so that the air flow 1 can be created.
Air is blown out from each of the outlets 103a and 105b. Further, an air reservoir (air reservoir) 700 is interposed between the blower 102 and the outlet 103 in order to further stabilize the band-shaped air flow 1. The outlet 10
3 is provided with a nozzle 106. The nozzle 10
6, a vibration structure (not shown) is built in,
Vibration is applied to the airflow passing therethrough, and the vibration attenuates or silences noise. Therefore, the excitation structure
The structure is such that the air current is excited at the same frequency as the frequency of the noise. Note that this excitation structure may be omitted depending on the frequency band and size of the noise to be soundproofed.

The type and structure of the blower 102 may be of any type, but it is desirable that the sound emitted when blowing air be small.

For this purpose, it is particularly preferable to use an AC motor such as an induction motor having a small frictional portion as the electric motor 101. In recent years, a DC motor having excellent quietness has been developed. A suitable electric motor can be used.

Similarly, it is particularly preferable that the blower 102 has excellent quietness and high blowing efficiency.

Alternatively, the motor 101 and the blower 102, which easily generate noise and vibration, are provided outside the room as an outdoor unit, and the air blowing device 1 having the air outlet 103 is provided.
The outer case 00 (outer shell housing) may be provided around a glass window or the like in the room.

As described above, the electric motor 101 and the blower 102, which are likely to generate noise and vibration, are put out of the room to be subjected to soundproofing, so that the soundproofing in the room is made more effective. can do.

In order to blow air in a band with a predetermined width, a blower 102 that can blow air uniformly in a wide area corresponding to the width is particularly preferable. As such a device, for example, a centrifugal electric blower is suitable. However, it goes without saying that the present invention is not limited to this.

The electric motor 101 and the blower 10
2, the air is blown out from the air outlet 103. At this time, a slight wind noise or other mechanical vibration noise may be unavoidable. Therefore, as a countermeasure against noise such as wind noise, a silencer device 104 is additionally provided at the air outlet 103.

As the silencer device 104, a general silencer may be used as long as it silences various noises generated from the outlet 103 of the blower 102 or noises generated from the entire air blowing device 100. .

The air suction device 200 is arranged at a distance from the air blowing device 100, and sucks the air flow 1 blown out from the air blowing device 100 in a band shape, thereby providing these air blowing devices. Between the device 100 and the air suction device 200, the band-shaped air flow 1 flows constantly without dissipating.

The air suction device 200 is an inhaler 20 that operates using a motor 201 as a motive power, such as a centrifugal motor suction device or an impeller (fan) motor suction device.
2 are built-in. The type and structure of the inhaler 202 may be of any type, but it is desirable that noise or the like generated when air is sucked in from the suction port 203 of the air suction pipes 205a and 205b is small.

For this purpose, it is particularly preferable to use an AC motor such as an induction motor having a small sliding portion as the electric motor 201. However, in recent years, a DC motor having excellent quietness has been developed. An electric motor can be suitably used.

Similarly, it is particularly preferable that the inhaler 202 has excellent quietness and high air blowing efficiency.

Further, in order to further increase the inhalation efficiency, it is more desirable to provide the heater 206 in front of the inhaler 202.

Alternatively, the electric motor 201 and the inhaler 202, which easily generate noise and vibration, are provided outdoors as an outdoor unit, and the outer case (outer shell case) of the air blowing device 200 having the suction port 203 is provided. May be provided around a glass window or the like in the room.

As described above, the electric motor 201 and the inhaler 202, which easily generate noise and vibration, are taken out of the room to be subjected to soundproofing, so that the soundproofing in the room can be more effectively performed. It can be.

In order to inhale air in a band of a predetermined width, an inhaler 202 capable of uniformly blowing air in a wide area corresponding to the width is particularly preferable.
As such, for example, a centrifugal electric inhaler is suitable.

Such an electric motor 201 and the inhaler 20
2, air is blown out from the suction port 203. At this time, a slight wind noise or other mechanical vibration noise may be unavoidable. Therefore, as a countermeasure against noise such as wind noise, a silencer device 204 may be provided at the suction port.

As the silencer device 204, a general device may be used as long as it is a silencer for silencing various noises or noises generated from the suction port 203 of the inhaler 202.

The air blowing device 100 and the air suction device 200 are provided, for example, at the upper portion 301 and the lower portion 302 of the glass window 300 or at the left side 303 and the right side 304, and cover almost the entire front surface of the glass window 300. Thus, the strip-shaped air flow 1 that is less likely to dissipate is constantly formed. Alternatively, a sliding door (sliding door) 50
0 is provided on the left side 503 and the right side 504, or the upper part 501 and the lower part 502, and constantly forms a strip-shaped air flow 1 that is hardly dissipated so as to cover almost the entire front surface of the sliding door 500. I do.

That is, the band-like air flow 1 formed between the air blowing device 100 and the air suction device 200 is blown out from the air blowing device 100 and then the air suction device 2.
Because it is inhaled by 00, there is little dissipation to the surroundings,
In addition, it has a steady flow.

The band-shaped air flow 1 has a flow velocity and a thickness that can attenuate or block the propagation of sound waves. The sound insulating material is the air blowing device 100
A state is formed in the space between the air suction device 200 and the air suction device 200.

In addition, a water vapor component is added to the zonal air flow 1 by the humidifier 400 provided in the air blowing device 100. Further, a silencer device 600 is interposed between the humidifier 400 and the air storage device 700.

That is, since the band-shaped air flow 1 flows at a predetermined flow rate, the internal pressure thereof is lower than that of the external static air. Moreover, the strip-shaped air stream 1 contains a large amount of water vapor components.

The band-like air flow 1 in such a state can effectively block or attenuate sound waves, such as external noises, which are going to propagate through the band-like air flow. This has been confirmed as a result of various experiments and considerations by the present inventor in completing the present invention.

Various conditions for obtaining the effect of blocking or attenuating such sound waves include various conditions depending on the magnitude of external noise to be sound-insulated, the outside air temperature, the room temperature, and the atmospheric pressure at that time. It is practically difficult to strictly quantify and show the change, but qualitatively, as the noise increases, the speed of the band-like air flow 1 increases and the thickness increases. Good.

Some examples of such conditions are as follows.

That is, the sound pressure of the noise source is 60 to 80 phon, the maximum effective height (or the maximum effective length) of the part to be subjected to noise prevention is 2 meters or less, and the sound pressure is 40
When the pressure is set to 50 to 50 or less, air having a volume of about three times the discharge amount is accumulated in the air storage device 700 at a pressure of about several kg / cm 2, and the air is blown from the outlet 103.

At this time, the thickness of the belt-like air flow 1 needs to be at least about 3 to 10 cm.

Alternatively, the maximum sound pressure of the noise source is 90 phons, the maximum effective height (or maximum effective length) of the part to be subjected to noise prevention is 6 meters, and the sound pressure is 60 to 7
To reduce the pressure to zero or less, air is stored in the air storage device 700 at a pressure of about 7 kg / cm 2, and the air is blown from the outlet 103.

The thickness of the band-shaped air flow 1 at this time is preferably about 5 to 30 [cm].

Alternatively, the maximum sound pressure of the noise source is 100 phons or more, the maximum effective height (or the maximum effective length) of the part to be subjected to noise prevention is 6 meters or more, and the sound pressure is 70 to 80 phons. In the case where the air pressure is not more than 8 kg / cm 2, the air is stored in the air storage device 700 at a high pressure,
It is blown from the outlet 103.

At this time, the thickness of the band-like air flow 1 is about 10 cm or more, preferably 10 to 30 cm.
It is. Alternatively, a thickness of 30 cm or more may be required depending on the relationship between the energy density of the noise and the atmospheric pressure.

Further, in addition to the above conditions,
The amount of additional steam component is also increased. However, if the added amount of the water vapor component is too large, it may increase the humidity due to contact with the still air in the room or the like, and the discomfort index in the room may increase. It is needless to say that it is desirable to keep it within such a range.

In this embodiment, the content of the water vapor component is controlled to be 60 to 100%.

According to the soundproofing device according to the present embodiment, it is possible to obtain a soundproofing or soundproofing effect of the glass window 300 without damaging the lighting or the scenery.

It is to be noted that the soundproofing device can be provided and used other than the portion of the glass window 300 as described above.

For example, it may be necessary to take sound insulation measures even on a portion where it was difficult to provide a conventional so-called sound insulation material, such as a door such as a sliding door or the like, which is required to be made thin. However, even in such a case, since the soundproofing device according to the present embodiment can be provided at those positions, a band-shaped air flow can be formed at that position, and a good soundproofing effect can be realized. .

Since the soundproofing device can be provided at any position, it is possible to obtain the soundproofing effect by installing the soundproofing device at any position in the room other than the above. It becomes possible.

Further, since this soundproofing device is driven by electric power using an electric motor, for example, when the noise of the external environment is large in the daytime but the noise subsides at night, the soundproofing device is driven in the daytime. Alternatively, the noise may be cut off, and the driving may be stopped at night.

Conversely, the user may be out during the daytime and not in the room, so the noise may be loud. However, since the user is returned to the room at night, the user is worried about the noise and cannot sleep well. In such a case, the soundproofing device may be stopped during the daytime and driven only at nighttime. Needless to say, such a function can be easily realized only by providing an on / off switch.

As described above, by driving the soundproofing device only when necessary and stopping it when not necessary, power consumption can be reduced, and as a result,
It can contribute to saving of energy resources.

The above description has focused on the case where noise entering the room from outside is prevented. Conversely, when the noise source is inside the room, the noise source is prevented from spreading to the outside. The invention can be suitably used. For example,
When a song or performance having a certain volume is enjoyed indoors such as a so-called karaoke box, if it is diffused and propagated outside the room, it is likely to cause so-called noise pollution. Therefore, even in such a case, noise pollution can be prevented by providing the soundproofing device of the present invention at the karaoke box, particularly at the glass window portion or other wall portions.

Although the above description has focused on the case where the soundproofing device of the present invention is provided indoors, the soundproofing device of the present invention may also be provided outdoors.

For example, as shown in FIG. 4, the present invention can be suitably used, for example, in a factory where noise frequently occurs, especially in order to prevent noise from spreading from the opening to the outside. is there.

Also, as shown in FIG.
00, or in an area along the route of various transportation means such as a railway (not shown),
The noise problem due to 1a801b or the like often becomes serious. Therefore, by providing the soundproofing device according to the present invention along such a place, it is possible to prevent only the noise generated from the various transportation means along the way without obstructing the view. It should be noted that the air blowing device 100 and the air suction device 20 are located on the side of the highway as shown in FIG.
0 and the air suction device 200
Is an air intake device 2 on the shoulder of the highway or on the side of the subgrade.
00, while holding the air blowing device 100 at a distance therefrom.
May be held by a stay (holding member) 802 attached to a road shoulder or a road floor.

Further, as shown in FIG.
00 and the air suction device 200 are arranged in two pairs or more pairs in one place, and the air blowing device 100 and the air suction device 200 are provided for each pair.
May be arranged so as to be opposite to each other.

Alternatively, even in the case of being used indoors as shown in FIGS. 2 and 3, two pairs or more pairs of the air blowing device 100 and the air suction device 200 can be combined in one place. The air blowing device 100 and the air suction device 200 may be arranged so that the air blowing device 100 and the air inhaling device 200 are arranged in a pair. At this time, it is desirable to arrange the pair so as to overlap each other at a certain interval. This is because, when the air blowing devices 100 and the air suction devices 2
The purpose of this is to prevent the occurrence of short-circuit between the blowout and the suction at 00 and the inability to form the strip-shaped airflow 1.

Further, the arrangement of the air blowing device 100 and the air suction device 200 is opposite to that of FIG. 2 and FIG.
0 may be arranged on the upper side. By doing so, the air blowing device 100, which tends to generate vibration and the like, can be fixed to a floor or the like, and the air blowing device 1 can be fixed.
There is an advantage that generation of vibration and noise from itself can be prevented.

[0073]

As described above, claims 1 to 5
According to the soundproofing device described in any one of the above, a band-like air flow having a speed and a thickness that attenuates the propagation of the sound wave is formed, and the air flow band propagates in a direction through the band-like air flow. Can be attenuated or cut off.

Further, at this time, since the noise is blocked by the band of the transparent air flow, even if it is installed on a window or the like where noise can easily enter, it does not block the scenery or lighting from the window. Therefore, it is possible to effectively block only external noise.

Furthermore, in particular, according to the soundproofing device of the second aspect, the silencer device is provided in the air blowing device or the air suction device, and the sound generated by the device itself is silenced to reduce the silence in the room. It can be realized more effectively.

Further, according to the soundproofing device of the third aspect, by adding steam to the flow of the band-like air, the noise cutoff function can be further improved.

Further, according to the soundproofing device of the fourth aspect, the soundproofing device according to the present invention can be provided on a glass window, a thin door or a wall surface, etc. Thus, an effective sound insulation can be realized.

Furthermore, according to the soundproofing device of the fifth aspect, the soundproofing device according to the present invention can be provided outdoors, so that noises caused by various types of transportation such as along a highway or a railway can be prevented. And the scenery from these various transportation means is not obstructed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a main part of a soundproofing device according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a case where the soundproofing device according to one embodiment of the present invention is arranged around a glass window in a room, and the soundproofing of the glass window is performed.

FIG. 3 is a diagram showing an example of a case where the soundproofing device according to one embodiment of the present invention is arranged in front of a thin door in a room and the door is soundproofed.

FIG. 4 is a diagram showing an example of a case where a soundproofing device according to the present invention is arranged at an entrance of a factory in order to prevent noise from spreading from inside the factory to the outside.

FIG. 5 is a diagram showing an example of a case where the soundproofing device according to the present invention is arranged along a highway in order to prevent noise from spreading to a living environment along the highway.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Band-shaped air flow 100 ... Air blow-off device 101 ... Electric motor 102 ... Blower 103 ... Blow-out port 104 ... Silencer device 105 ... Air discharge pipe 106 ... Nozzle 200 ... Air suction device 201 ... Electric motor 202 ... Inhaler 203 ... Inlet 204: Silencer device 205: Air suction pipe 206: Heater 300: Glass window 400: Humidifier 500: Sliding door 600: Silencer device 700: Air storage device 800: Expressway

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) G10K 11/16

Claims (5)

[Claims] 1. An air blowing device, comprising: a blowing port for blowing air; blowing air from the blowing port to form a strip-shaped air flow having a speed and a thickness to attenuate the propagation of sound waves; An air intake device that is provided with an intake port that inhales air and that is opposed to the air blowing device at a distance from the air blowing device, and that sucks the flow of the air blown out from the air blowing device. A soundproofing device characterized by the above. 2. The apparatus according to claim 1, further comprising a silencer device that attenuates or silences a sound generated when the air passes through at least one of the outlet and the inlet. The soundproofing device as described. 3. The method according to claim 1, wherein water vapor is added to the air blown out from the air blowing device so as to improve an attenuation rate of the propagation of the sound wave in the flow of the band-shaped air. The soundproofing device according to item 1. 4. The air supply device according to claim 1, wherein the air blowing device and the air suction device are formed so as to be able to be attached to at least one of a window, a door, a wall surface, and a doorway in a room. The soundproofing device according to claim 1. 5. The air blowing device and the air suction device according to claim 1, wherein the air blowing device and the air suction device are formed so as to be able to be attached to a place where soundproofing is required outdoors. Soundproofing equipment.