JP7029196B1 - Soundproof box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soundproof box having a suitable configuration for preventing rainwater from entering a storage space in which a generator is housed. , A soundproof box that can accommodate the generator G in the accommodation space S, and is a first that can communicate between the external space and the first space portion s1 on the lower peripheral wall B facing the first space portion s1. A first air introduction hole e1 and a first air introduction fan e2 arranged in the vicinity of the first air introduction hole e1 for introducing air in an external space into the first space portion s1. An air introduction section E is provided, and the first space portion s1 is set to a positive pressure by the first air introduction section E. [Selection diagram] Fig. 2

Description

The present invention relates to a soundproof box that suppresses noise of a small generator.

Conventionally, various soundproof boxes for suppressing the noise of a small generator have been developed (see, for example, Patent Document 1).

By the way, since a small generator operates a gasoline engine to generate electricity, it inevitably emits high-temperature exhaust gas. The soundproof box accommodating a small generator has a problem that if the degree of sealing is excessively increased in order to enhance the soundproofing effect, the temperature of the internal space rises and the small generator tends to overheat.

On the other hand, if the degree of sealing of the soundproof box is too weak, not only the initial soundproof effect cannot be achieved, but also rainwater easily enters the soundproof box, causing a problem in the housed small generator. It will make you let.

International Release 2017/051545

The present invention has been made by paying attention to the above circumstances, and can smoothly discharge exhaust gas while maintaining a soundproofing effect, and makes it difficult for rainwater to enter the accommodation space in which the generator is accommodated. It is an object of the present invention to provide a soundproof box having a suitable configuration.

That is, the present invention has the following configuration.

The invention according to claim 1 comprises a lower box component that is open upward and an upper box component that is open downward and supported by the lower box component, and the lower box component and the upper part thereof. It is a soundproof box that can accommodate a portable generator driven by an engine in the accommodation space formed by the box component, and the lower box component has a rectangular shape and the generator is mounted. The bottom wall is formed, the lower peripheral wall erected from the peripheral edge of the bottom wall, the first space portion that constitutes the accommodation space and where the air suction portion of the generator is located, and the accommodation space. It is provided with a lower partition wall erected in the middle portion in the front-rear direction of the bottom wall so as to be separated from a second space portion where the exhaust gas exhaust portion of the generator is located, and the upper box component portion is provided. , A top wall having substantially the same size as the bottom wall, an upper peripheral wall that is vertically hung from the peripheral edge of the top wall and whose lower end edge is abutted against the upper end edge of the lower peripheral wall, and cooperates with the lower partition wall. The first space portion is provided with an upper partition wall vertically installed in the middle portion in the front-rear direction of the top wall so as to separate the first space portion from the second space portion. A first air introduction hole capable of communicating between the external space and the first space portion on the lower peripheral wall or the upper peripheral wall facing the surface, and an external space arranged in the vicinity of the first air introduction hole. A first air introduction portion having a first air introduction fan for introducing air into the first space portion is provided, and the lower peripheral wall or the upper circumference facing the second space portion is provided. The wall is provided with an exhaust lead-out portion capable of discharging the exhaust gas discharged from the exhaust gas discharge portion to an external space, and the first space portion is positively pressured by the first air introduction portion. A second air introduction hole that can communicate between the external space and the second space portion in the lower peripheral wall or the upper peripheral wall facing the second space portion. A second air introduction portion provided in the vicinity of the second air introduction hole and having a second air introduction fan for introducing the air in the external space into the second space portion is provided. It is a soundproof box.

In the invention according to claim 2 , the exhaust lead-out portion is arranged in the vicinity of an exhaust hole capable of communicating between an external space and the second space portion, and the second space portion. The soundproof box according to claim 1, further comprising an exhaust fan for discharging the exhaust gas accumulated inside to the external space.

The invention according to claim 3 has a tubular shape and includes first and second noise suppression members arranged in the second space portion, and the first noise suppression member is a base. The end portion is attached to the peripheral edge portion of the second air introduction portion while surrounding the second air introduction portion, and the base end portion of the second noise suppression member has the exhaust outlet portion. The soundproof box according to claim 1 or 2, which is attached to the peripheral edge of the exhaust outlet while surrounding the air.

According to the fourth aspect of the present invention, one end of the lower peripheral wall in the lower box component and one end of the upper peripheral wall in the upper box component are connected via a hinge, and the lower one is connected. The soundproof box according to claim 1, 2 or 3, wherein each of the box component and the upper box component is configured to be open to the upper side.

The invention according to claim 5 is the soundproof box according to claim 1, 2, 3 or 4, wherein a plurality of handles are provided on the outer surface side of the upper box component.

The invention according to claim 6 is claimed 1, 2, 3, 4 in which the lower box component is provided with an outlet portion having a plug insertion hole for using electricity obtained by the generator. Or the soundproof box according to 5.
The invention according to claim 7 includes a lower box component that is open upward and an upper box component that is open downward and supported by the lower box component, and these lower box components. A soundproof box capable of accommodating a portable generator driven by an engine in a storage space formed by an upper box component, wherein the lower box component has a rectangular shape and the generator has a rectangular shape. The bottom wall on which it is placed, the lower peripheral wall erected from the peripheral edge of the bottom wall, the first space portion in which the air suction portion of the generator is located, and the accommodation space are configured. The upper box configuration is provided with a lower partition wall erected in the middle portion in the front-rear direction of the bottom wall so as to be separated from a second space portion where the exhaust gas discharge portion of the generator is located. A top wall whose portion is substantially the same size as the bottom wall, an upper peripheral wall which is vertically provided from the peripheral edge of the top wall and whose lower end edge is abutted against the upper end edge of the lower peripheral wall, and a lower partition wall. It is provided with an upper partition wall suspended in the middle portion in the anteroposterior direction of the top wall so as to work to separate the first space portion and the second space portion, and is provided with the first space. The lower peripheral wall or the upper peripheral wall facing the portion is provided with a first air introduction portion having a first air introduction hole capable of communicating between the external space and the first space portion. The lower peripheral wall or the upper peripheral wall facing the second space portion is provided with an exhaust lead-out portion capable of discharging the exhaust gas discharged from the exhaust gas discharge portion to the external space. A second air introduction hole capable of communicating between the external space and the second space portion on the lower peripheral wall or the upper peripheral wall facing the second space portion, and arranged in the vicinity of the second air introduction hole. It is a soundproof box provided with a second air introduction portion having a second air introduction fan for introducing the air in the external space into the second space portion.

As described above, according to the present invention, the soundproof box has a suitable configuration in which exhaust gas can be smoothly discharged while maintaining the soundproofing effect, and rainwater is less likely to enter the accommodation space in which the generator is accommodated. Can be provided.

The perspective view which shows one Embodiment of this invention. The perspective view in the same embodiment. An exploded perspective view of the same embodiment. Front view in the same embodiment. The rear view in the same embodiment. The plan view in the same embodiment. Right side in the same embodiment. Left side view in the same embodiment. Explanatory drawing for explaining the implementation outline of an experiment. Explanatory drawing for explaining the implementation outline of an experiment. Table showing the experimental results of FIGS. 9 and 10.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 11.

This embodiment applies the present invention to a portable soundproof box mainly used outdoors.

The soundproof box is in the shape of a trunk box including a lower box component A that is open upward and an upper box component D that is open downward and supported by the lower box component A. The soundproof box is designed so that the portable generator G driven by the engine can be accommodated in the internal accommodation space S formed by the lower box component A and the upper box component D.

The soundproof box has a basic posture (L) in which the upper box component D is supported by the lower box component A and the accommodation space S is closed, and the lower box component A and the upper box component D are each on the ground or the like. It is configured so that it can take an open posture (M) which is placed on the mounting surface of the above and is open to the upper side.

The generator G has a known configuration in which a gasoline engine can be operated to generate electricity. Therefore, a detailed description of the generator G will be omitted, and a schematic diagram will be shown in the figure. To the soundproof box of this embodiment, a generator G having an air suction portion g1 provided on the front end portion side and an exhaust gas discharge portion g2 provided on the rear end portion side is applied.

The accommodation space S of the soundproof box is separated by a partition wall into a first space portion s1 located on the front side and a second space portion s2 located on the rear side. That is, the accommodation space S of the soundproof box includes the first space portion s1 which is the space portion where the air suction portion g1 of the generator G and the gasoline tank are located and the generator by the lower partition wall C and the upper partition wall I which are partition walls. It is possible to partition the second space portion s2, which is the space portion where the exhaust gas discharge portion g2 of G is located.

First, the lower box component A constituting the soundproof box will be described.

<< Lower box component A >>
The lower box component A has a rectangular shape, that is, a rectangular shape that is elongated in the front-rear direction, and has a bottom wall 1 on which the generator G is placed, and a peripheral portion of the bottom wall 1, that is, a front edge, a trailing edge, and left and right. The lower peripheral wall B erected from the side edge, the first space portion s1 which constitutes the accommodation space S and where the air suction portion g1 of the generator G is located, and the accommodation space S are formed and cooperates with the upper partition wall I. It is provided with a lower partition wall C erected in the middle portion in the front-rear direction of the bottom wall 1 so as to be separated from the second space portion s2 in which the exhaust gas discharge portion g2 of the generator G is located.

<Bottom wall 1>
The bottom wall 1 includes a bottom wall main body 11 having a rectangular plate shape, and a bottom wall inner layer plate 12 arranged on the inner surface, that is, the upper surface side of the bottom wall main body 11.

The bottom wall main body 11 has a plate-like shape having a certain rigidity, and for example, a plastic hollow plate can be applied.

The bottom wall inner layer plate 12 is a plate-like plate having a certain rigidity, and for example, a plastic hollow plate (bubble board) having a sound absorbing function disclosed in Japanese Patent No. 6478471 or the like is applied. It has become. The bottom wall inner layer plate 12 functions as a so-called bottom edge located under the generator G accommodated in the accommodation space S. If necessary, the bottom wall inner layer plate 12 is formed with a slip-preventing fitting hole (not shown) for avoiding a leg (not shown) provided at the lower end of the generator G.

The generator G is fastened to the bottom wall inner layer plate 12 by a tightening means such as a belt (not shown). The bottom wall inner layer plate 12 is formed with a notch hole or a notch portion (not shown) for positioning a tightening means such as a belt, if necessary.

Needless to say, the bottom wall 1 may have an appropriate configuration, and for example, a vibration-proof sheet may be provided between the bottom wall main body 11 and the bottom wall inner layer plate 12. Further, it goes without saying that the bottom wall 1 may be provided with a sound absorbing material, a cushioning material, a heat insulating material, and a positioning member related to the generator G, which are different from those described above.

<Lower peripheral wall B>
The lower peripheral wall B has a lower front wall portion 2 extending upward from the front edge of the bottom wall 1 orthogonal to the bottom wall 1, and an upper portion orthogonal to the bottom wall 1 from the trailing edge of the bottom wall 1. It is provided with a lower rear wall portion 3 extending from the left and right side edges of the bottom wall 1 and left and right lower side wall portions 4 extending upward at right angles to the bottom wall 1.

<Lower front wall 2 (lower peripheral wall B)>
The lower front wall portion 2 includes a lower front wall portion main body 21 having a rectangular plate shape, and a lower front wall inner layer plate 22 arranged on the inner surface side of the lower front wall portion main body 21.

The lower front wall portion main body 21 has a plate-like shape having a certain rigidity, and for example, a plastic hollow plate can be applied.

The lower front wall inner layer plate 22 is a plate-like or sheet-like material capable of exhibiting a sound absorbing function and a heat insulating function. For example, a panel plate containing glass wool as a material and having a glass cloth makeup on the surface is applied. It has become. The lower front wall inner layer plate 22 is adhered to the lower front wall portion main body 21 by various adhesive means.

The lower front wall portion 2 of the lower box component A is provided with an outlet portion P having a plug insertion hole p1 for using electricity obtained by the generator G in the central portion in the left-right direction. The outlet unit P is provided with a power supply mechanism (not shown) connected to the power supply unit g3 provided in the generator G.

<Lower rear wall 3 (lower peripheral wall B)>
The lower rear wall portion 3 includes a lower rear wall portion main body 31 having a rectangular plate shape, and a lower rear wall inner layer plate 32 arranged on the inner surface side of the lower rear wall portion main body 31.

The lower rear wall portion main body 31 has a plate-like shape having a certain rigidity, and for example, a plastic hollow plate can be applied.

The lower rear wall inner layer plate 32 is a plate-like or sheet-like material capable of exhibiting a sound absorbing function and a heat insulating function, and for example, a panel plate containing glass wool as a material is applied. The lower rear wall inner layer plate 32 is adhered to the lower rear wall portion main body 31 by various adhesive means. The lower rear wall inner layer plate 32 is a portion facing the second space portion s2 where the temperature tends to be high due to the exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G, and the surface is coated with aluminum. Things have been applied.

<Lower side wall 4 (lower peripheral wall B)>
The lower side wall portion 4 includes a lower side wall portion main body 41 having a rectangular plate shape, and a lower side wall inner layer plate 42 arranged on the inner surface side of the lower side wall portion main body 41.

The lower side wall portion main body 41 has a plate-like shape having a certain rigidity, and for example, a plastic hollow plate can be applied.

The lower side wall inner layer plate 42 has a plate-like or sheet-like shape capable of exhibiting a sound absorbing function and a heat insulating function, and for example, a panel plate containing glass wool as a material is applied. The lower side wall inner layer plate 42 is adhered to the lower side wall portion main body 41 by various adhesive means. Similar to the lower rear wall inner layer plate 32, an aluminum laminate is applied to the portion of the lower side wall inner layer plate 42 facing the second space portion s2.

Needless to say, the structure of the lower peripheral wall B may be of an appropriate aspect. For example, between the lower front wall main body 21, the lower rear wall main body 31, and the lower side wall main body 41, and the lower front wall inner layer plate 22, the lower rear wall inner layer plate 32, and the lower side wall inner layer plate 42. , A vibration-proof sheet may be provided. Needless to say, the lower peripheral wall B may be provided with a sound absorbing material, a cushioning material, a heat insulating material, and a positioning member related to the generator G, which are different from those described above.

The bottom wall main body 11, the lower front wall main body 21, the lower rear wall main body 31, and the lower side wall main body 41 described above are integrated by using an aluminum frame Q which is a connecting member.

<Lower partition wall C>
The lower partition C has a first space portion s1 which is a space where the air suction portion g1 of the generator G is located and an exhaust gas discharge portion g2 of the generator G by cooperating with the upper partition I which will be described in detail later. It has a wall shape that can separate it from the second space portion s2, which is the space in which it is located.

The lower partition wall C is erected so as to avoid the generator G mounted on the bottom wall 1. The lower partition walls C are arranged in pairs on the left and right and separated from each other, and are connected to the bottom wall inner layer plate 12 and the lower wall surface inner layer plate 42, respectively. The lower partition wall C is composed of a plate-shaped member having an aluminum laminate on the outer surface and having excellent heat insulating properties.

A sealing material (not shown) having excellent elastic deformation is attached to each inner edge of the left and right lower partition walls C that are close to the generator G. The sealing material is set so as to be able to adhere to the outer surface of the generator G so that the first space portion s1 and the second space portion s2 can be appropriately separated.

The lower peripheral wall B of the lower box component A is provided with a first air introduction section E, a second air introduction section K, and an exhaust lead-out section J, which will be described in detail later. To.

Next, the upper box component D that constitutes the soundproof box will be described. The upper box component D has a downward box shape, and can function as an upper lid that can block the lower box component A.

<< Upper box component D >>
The upper box component D has a top wall 5 having a rectangular shape, that is, a rectangular shape extending in the front-rear direction and having substantially the same size as the bottom wall 1, and a peripheral portion, that is, a front edge, a trailing edge, and a top edge of the top wall 5. The upper peripheral wall F which is vertically provided from the left and right side edges and whose lower end edge fe is abutted against the upper end edge be of the lower peripheral wall B, and the first space which constitutes the accommodation space S and where the air suction portion g1 of the generator G is located. In the middle portion in the front-rear direction of the top wall 5 so as to be separated from the second space portion s2 in which the exhaust gas discharge portion g2 of the generator G is located in cooperation with the lower partition wall C, which constitutes the portion s1 and the accommodation space S. It is provided with a vertically installed upper partition I.

<Top wall 5>
The top wall 5 includes a top wall main body 51 having a rectangular plate shape, and a top wall inner layer plate 52 arranged on the inner surface, that is, the lower surface side of the top wall main body 51.

The top wall main body 51 has a plate-like shape having a certain rigidity, and for example, a plastic hollow plate can be applied.

The top wall inner layer plate 52 is a plate-like or sheet-like material capable of exhibiting a sound absorbing function and a heat insulating function. For example, a panel plate containing glass wool as a material and having a glass cloth makeup on the surface is applied. It has become. The top wall inner layer plate 52 is adhered to the top wall main body 51 by various adhesive means.

Needless to say, the top wall 5 may be configured in an appropriate manner, and for example, a vibration-proof sheet may be provided between the top wall main body 51 and the top wall inner layer plate 52. Further, it goes without saying that the top wall 5 may be provided with a sound absorbing material, a cushioning material, a heat insulating material, and a positioning member related to the generator G, which are different from those described above.

<Upper wall F>
The upper peripheral wall F is orthogonal to the top wall 5 from the trailing edge of the top wall 5 and the upper front wall portion 6 extending downward from the front edge of the top wall 5 at right angles to the top wall 5. It is provided with an upper rear wall portion 7 extending downward and left and right upper side wall portions 8 extending upward from the left and right side edges of the top wall 5 orthogonal to the top wall 5.

<Upper front wall part 6 (upper peripheral wall F)>
The upper front wall portion 6 includes an upper front wall portion main body 61 having a rectangular plate shape, and an upper front wall inner layer plate 62 arranged on the inner surface side of the upper front wall portion main body 61.

The upper front wall portion main body 61 has a plate-like shape having a certain rigidity, and for example, a plastic hollow plate can be applied.

The upper front wall inner layer plate 62 is a plate-like or sheet-like material capable of exhibiting a sound absorbing function and a heat insulating function. For example, a panel plate containing glass wool as a material and having a glass cloth makeup on the surface is applied. It has become. The upper front wall inner layer plate 62 is adhered to the upper front wall portion main body 61 by various adhesive means.

<Upper rear wall part 7 (upper peripheral wall F)>
The upper rear wall portion 7 includes an upper rear wall portion main body 71 having a rectangular plate shape, and an upper rear wall inner layer plate 72 arranged on the inner surface side of the upper rear wall portion main body 71.

The upper rear wall portion main body 71 has a plate-like shape having a certain rigidity, and for example, a plastic hollow plate can be applied.

The upper rear wall inner layer plate 72 is a plate-like or sheet-like material capable of exhibiting a sound absorbing function and a heat insulating function, and for example, a panel plate containing glass wool as a material is applied. The upper rear wall inner layer plate 72 is adhered to the lower rear wall portion main body 31 by various adhesive means. The lower rear wall inner layer plate 32 is a portion facing the second space portion s2 where the temperature tends to be high due to the exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G, and the surface is coated with aluminum. Things have been applied.

<Upper side wall 8 (upper peripheral wall F)>
The upper side wall portion 8 includes an upper side wall portion main body 81 having a rectangular plate shape, and an upper side wall inner layer plate 82 arranged on the inner surface side of the upper side wall portion main body 81.

The upper side wall portion main body 81 has a plate-like shape having a certain rigidity, and for example, a plastic hollow plate can be applied.

The upper side wall inner layer plate 82 is a plate-like or sheet-like material capable of exhibiting a sound absorbing function and a heat insulating function, and for example, a panel plate containing glass wool as a material is applied. The upper side wall inner layer plate 82 is adhered to the upper side wall portion main body 81 by various adhesive means. An aluminum laminate is applied to the portion of the upper wall inner layer plate 82 facing the second space portion s2.

Needless to say, the structure of the upper peripheral wall F may be of an appropriate aspect. For example, between the upper front wall portion main body 61, the upper rear wall portion main body 71, and the upper side wall portion main body 81, and the upper front wall inner layer plate 62, the upper rear wall inner layer plate 72, and the upper side wall inner layer plate 82. , A vibration-proof sheet may be provided. Needless to say, the upper peripheral wall F may be provided with a sound absorbing material, a cushioning material, a heat insulating material, and a positioning member related to the generator G, which are different from those described above.

The above-mentioned top wall main body 51, upper front wall portion main body 61, upper rear wall portion main body 71, and upper side wall portion main body 81 are integrated by using an aluminum frame Q which is a connecting member.

<Upper partition I>
The upper partition I is a space in which the first space portion s1 which is the space where the air suction portion g1 of the generator G is located and the exhaust gas discharge portion g2 of the generator G are located by cooperating with the lower partition C. It has a wall shape that can separate it from the second space portion s2.

The upper partition wall I is provided so as to avoid the generator G mounted on the bottom wall 1. The upper partition wall I has a gate shape as a whole. A notch i1 cut out corresponding to the shape of the upper part of the generator G is provided at the central portion in the left-right direction of the upper partition wall I. The upper partition wall I is made of a plate-shaped member having an aluminum laminate on the outer surface and having excellent heat insulating properties.

A sealing material (not shown) having excellent elastic deformation is attached to the notch i1 of the upper partition wall I. The sealing material is set so as to be able to adhere to the upper outer surface of the generator G so as to be able to isolate the first space portion s1 and the second space portion s2.

A plurality of handles T are provided on the outer surface side of the upper box component D. More specifically, the handles T are provided on the upper surface of the top wall 5 in pairs in the front-rear direction, and are provided on the upper front wall portion 6 and the upper rear wall portion 7 in the upper peripheral wall F, respectively.

One end of the lower peripheral wall B in the lower box component A, that is, the upper end of the lower front wall main body 21, and one end of the upper peripheral wall F in the upper box component D, that is, the lower end of the upper front wall main body 61. It is connected via a damper hinge H which is a hinge. In other words, the upper box component D is rotatably supported with respect to the lower box component A so that the accommodation space S can be opened and closed.

Further, in this embodiment, as shown in FIG. 3, in order to facilitate the setting work of the generator G, each of the lower box component A and the upper box component D is opened to the upper side (M). ) Is configured to be taken.

The upper box component D of the soundproof box can be fixed to the lower box component A by the snap lock R in the basic posture (L).

Subsequently, the first air introduction section E, the second air introduction section K, and the exhaust lead-out section J provided on the lower peripheral wall B of the lower box component A will be described.

<First air introduction unit E>
The first air introduction portion E is provided on the lower peripheral wall B (more specifically, the lower side wall portion 4 on one side of the lower peripheral wall B) facing the first space portion s1, and is provided with the external space and the first space portion. The first air introduction hole e1 that can communicate with s1 and the air in the external space are arranged in the vicinity of the first air introduction hole e1, that is, at a position facing the first air introduction hole e1, in the first space portion s1. It is equipped with a first air introduction fan e2 for introduction.

The first air introduction fan e2 has a known configuration in which the propeller e21 that generates an air flow is rotated by a driving force of a motor (not shown). The electric power of the first air introduction fan e2 is supplied from the generator G.

In this embodiment, the first space portion s1 is set to a positive pressure by operating the first air introduction unit E. Therefore, not only can the air be appropriately supplied to the air suction unit g1 of the generator G without running out of air, but also the space between the lower box component A and the upper box component D and the first space portion. It is possible to suitably suppress the invasion of rainwater into the first space portion s1 through minute gaps that can be formed in the portion closely related to s1.

<Exhaust lead unit J>
The exhaust lead-out portion J is provided on the lower peripheral wall B (more specifically, the lower side wall portion 4 on the other side of the lower peripheral wall B) facing the second space portion s2. The exhaust lead-out unit J can discharge the exhaust gas discharged from the exhaust gas discharge unit g2 to the external space. The exhaust lead-out unit J is arranged in the exhaust hole j1 capable of communicating between the external space and the second space portion s2, and in the vicinity of the exhaust hole j1, that is, at a position facing the exhaust hole, in the second space portion s2. It is provided with an exhaust fan j2 for discharging the accumulated exhaust gas to the external space.

The exhaust fan j2 has a known configuration in which the propeller j21 that generates an air flow is rotated by a driving force of a motor (not shown). The electric power of the exhaust fan j2 is supplied from the generator G. The exhaust lead-out unit J may have a configuration having only the exhaust hole j1, that is, a configuration having no exhaust fan j2.

<Second air introduction part K>
The second air introduction portion K is provided on the lower peripheral wall B (more specifically, the lower side wall portion 4 on one side of the lower peripheral wall B) facing the second space portion s2, and is provided with an external space and a second space portion. The second air introduction hole k1 that can communicate with s2 and the second space portion s2 are arranged in the vicinity of the second air introduction hole k1, that is, at a position facing the second air introduction hole k1. It is equipped with a second air introduction fan k2 for introduction into the air.

The second air introduction fan k2 has a known configuration in which the propeller k21 that generates an air flow is rotated by a driving force of a motor (not shown). The electric power of the second air introduction fan k2 is supplied from the generator G.

In this embodiment, by operating the second air introduction unit K, it is possible to urge the exhaust gas discharged to the second space portion s2 to be exhausted to the outside from the exhaust lead-out unit J. There is. Therefore, the high-temperature exhaust gas discharged from the exhaust gas discharge portion g2 of the generator G is suitably discharged from the exhaust lead-out unit J with almost no retention in the second space portion s2.

That is, because the second air introduction unit K and the exhaust extraction unit J cooperate with each other, it is difficult for the high heat exhaust gas to stay in the second space portion s2, and the exhaust gas to the external space is promoted. , The second space portion s2, and thus the entire soundproof box, is less likely to have an excessive temperature rise.

The soundproof box in this embodiment includes first and second noise suppression members V1 and V2 which have a cylindrical shape and are arranged in the second space portion s2. The first and second noise suppression members V1 and V2 function as so-called silencers for reducing the noise generated from the generator G.

That is, the first and second noise suppression members V1 and V2 linearly transmit the noise generated from the generator G without impairing the smooth flow of the external air to the inside and the smooth flow of the internal air to the outside. It is configured so as not to reach the second air introduction hole k1 and the exhaust hole j1. In other words, the first and second noise suppression members V1 and V2 can improve the soundproofing performance by lengthening the transmission path of the noise generated from the generator G as much as possible.

The first noise suppression member V1 is composed of a cylindrical member having a shape curved in a substantially L shape in front view or rear view. The base end portion of the first noise suppression member V1 is attached to the peripheral portion of the second air introduction portion K, that is, the lower side wall portion main body 41 in the lower peripheral wall B while surrounding the second air introduction portion K. .. The tip of the first noise suppression member V1 is open upward.

The second noise suppression member V2 is composed of a cylindrical member having a shape curved in a substantially L shape in front view or rear view. The base end portion of the second noise suppression member V2 is attached to the peripheral portion of the exhaust lead-out portion J, that is, the lower side wall portion main body 41 in the lower peripheral wall B while surrounding the exhaust lead-out portion J. The tip of the second noise suppression member V2 is open upward.

Hereinafter, the noise level in a state where the generator G is housed in the soundproof box of the present embodiment and the generator G is operated (hereinafter, referred to as “soundproof box housed state (B)”), and the generator G is the soundproof box. The outline of the experiment and the result of the experiment for verifying the difference from the noise level in the state of being exposed to the outside without being housed in the room (hereinafter referred to as "blank state (A)") are shown.

In this experiment, as shown in FIGS. 9 and 10, measurements were performed by the sound level meter M at four locations (a), (b), (c), and (2).

FIG. 9 shows an outline of implementation of noise level measurement in the soundproof box housing state (B). The sound level meter M was installed at a position about 0.6 m above the floor at a position about 1.5 m away from the outer surface of the peripheral wall (lower peripheral wall B and upper peripheral wall F) of the soundproof box.

What is shown in FIG. 10 shows an outline of implementation of noise level measurement in the blank state (A). The position of the sound level meter M is the same as that of FIG.

As a result of measuring the noise level generated from the generator G under the above-mentioned conditions, the result shown in FIG. 11 was obtained. That is, it was found that the measured value of the noise in the soundproof box housing state (B) was minus 8 dB on average as compared with the measured value of the noise in the blank state (A). In other words, it was found that when the generator G is housed in the soundproof box and operated, a soundproofing effect of about 8 dB is exhibited as compared with the case where the generator G is not housed in the soundproof box.

As described above, the soundproof box according to the present embodiment includes a lower box component A that is open upward and an upper box component D that is open downward and supported by the lower box component A. It is a thing.

The soundproof box can accommodate the portable generator G driven by the engine in the accommodation space S formed by the lower box component A and the upper box component D.

The lower box component A constitutes a rectangular bottom wall 1 on which the generator G is placed, a lower peripheral wall B erected from the peripheral edge of the bottom wall 1, and a storage space S, and is a generator G. The front-rear direction on the bottom wall 1 so as to be separated from the first space portion s1 in which the air suction portion g1 is located and the second space portion s2 in which the accommodation space S is formed and the exhaust gas discharge portion g2 of the generator G is located. It is provided with a lower partition wall C erected in the middle portion.

The upper box component D is a top wall 5 having substantially the same size as the bottom wall 1, and an upper peripheral wall that is vertically provided from the peripheral edge of the top wall 5 and whose lower end edge fe is abutted against the upper end edge be of the lower peripheral wall B. F is provided with an upper partition wall I suspended in the middle portion in the front-rear direction of the top wall 5 so as to separate the first space portion s1 and the second space portion s2 in cooperation with the lower partition wall C. It is a thing.

The first air introduction hole e1 capable of communicating between the external space and the first space portion s1 through the lower peripheral wall B facing the first space portion s1 formed by the lower box constituent portion A and the upper box constituent portion D. And the first air introduction unit E which is arranged in the vicinity of the first air introduction hole e1 and has the first air introduction fan e2 for introducing the air of the external space into the first space portion s1. The lower peripheral wall B facing the second space portion s2 is provided with an exhaust lead-out unit J capable of discharging the exhaust gas discharged from the exhaust gas discharge part g2 to the external space. ..

Therefore, the first space portion s1 is set to a positive pressure by the first air introduction portion E.

Therefore, it is possible to provide a soundproof box having a suitable configuration that makes it difficult for rainwater to enter the accommodation space S in which the generator G is accommodated.

On the lower peripheral wall B facing the second space portion s2, a second air introduction hole k1 capable of communicating between the external space and the second space portion s2 and a second air introduction hole k1 are arranged in the vicinity of the second air introduction hole k1. A second air introduction portion K having a second air introduction fan k2 for introducing air in the external space into the second space portion s2 is provided.

Therefore, since the external air is introduced into the second space portion s2 in the second air introduction portion K, the exhaust gas discharged from the generator G is less likely to stay in the second space portion s2. , Exhaust to the outside is suitably promoted through the exhaust lead-out unit J.

The exhaust lead-out unit J externally collects the exhaust gas j1 that can communicate between the external space and the second space portion s2 and the exhaust gas that is arranged in the vicinity of the exhaust hole j1 and stays in the second space portion s2. It is equipped with an exhaust fan j2 for discharging into a space.

Therefore, the exhaust gas discharged from the generator G is less likely to stay in the second space portion s2, and the exhaust gas to the outside is suitably promoted through the exhaust lead-out unit J.

According to the configuration of the present embodiment, the temperature of the first space portion s1 where the gasoline tank is located in the generator G is continuously suppressed to 40 degrees Celsius or less, and the engine of the generator G is not overheated. We were able to carry out continuous operation for eight hours.

The first and second noise suppression members V1 and V2 having a tubular shape and arranged in the second space portion s2 are provided, and the first noise suppression member V1 has a second base end portion. The second noise suppression member V2 is attached to the peripheral edge of the second air introduction portion K while surrounding the air introduction portion K, and the base end portion of the second noise suppression member V2 surrounds the exhaust lead-out portion J to exhaust the exhaust gas. It is attached to the peripheral portion of the lead-out portion J.

Therefore, the noise of the generator G becomes difficult to linearly reach the second air introduction hole k1 and the exhaust hole j1, and the noise transmitted to the external space through the second air introduction hole k1 and the exhaust hole j1 is preferable. It has become something that can be suppressed.

One end of the lower peripheral wall B in the lower box component A and one end of the upper peripheral wall F in the upper box component D are connected via a damper hinge H which is a hinge, and the lower box component A and the upper are connected. Each of the box components D is configured to be open to the upper side (M).

Therefore, not only the setting of the generator G can be flexibly performed, but also the basic posture (L) in which the accommodation space S is closed can be easily taken only by rotating the upper box component D. ..

A plurality of handles T are provided on the outer surface side of the upper box component D, that is, on the top wall 5 and the upper peripheral wall F.

Therefore, the soundproof box is excellent in portability and convenience of opening / closing operation of the upper box component D.

The lower box component A is provided with an outlet portion P having a plug insertion hole p1 for using the electricity obtained by the generator G.

Therefore, the soundproof box can suitably provide the electricity generated by the generator G to the outside.

The present invention is not limited to the embodiment described in detail above.

The first air introduction portion may be provided on the lower peripheral wall or the upper peripheral wall facing the first space portion.

The second space introduction portion and the exhaust lead-out portion may be provided on the lower peripheral wall or the upper peripheral wall facing the second space portion.

The shapes of the first and second noise suppression members can be various shapes, and are not limited to those shown in the above-described embodiment.

The lower box component and the upper box component may not be connected via a hinge.

Needless to say, the plurality of handles may be provided at appropriate positions on the outer surface side of the upper box constituent portion and the lower box constituent portion.

The lower box component does not necessarily have to be provided with an outlet portion having a plug insertion hole. That is, the soundproof box may have any configuration as long as electricity can be obtained from the housed generator.

The material of the inner layer plate that constitutes the lower box component and the upper box component may be any material that can exhibit sound absorption and heat insulation functions, and in addition to the above-mentioned glass wool and glass cloth, rock wool and other nonflammable materials. It may be the one to which the cloth is applied.

In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

A ... Lower box component B ... Lower peripheral wall C ... Lower partition D ... Upper box component E ... First air introduction section F ... Upper peripheral wall G ... Generator I ... Upper partition J ... Exhaust lead section K ... Second Air introduction part S ... Containment space 1 ... Bottom wall 5 ... Top wall

Claims (7)

A storage space formed by a lower box component that is open upward and an upper box component that is open downward and supported by the lower box component, and is formed by the lower box component and the upper box component. A soundproof box that can accommodate a portable generator driven by an engine.
The lower box component has a rectangular shape, and forms the accommodation space with a bottom wall on which the generator is placed, a lower peripheral wall erected from the peripheral edge of the bottom wall, and air suction of the generator. It is erected in the middle part in the front-rear direction of the bottom wall so as to be separated from the first space part where the part is located and the second space part which constitutes the accommodation space and where the exhaust gas discharge part of the generator is located. It is equipped with a lower partition wall.
The upper box component has a top wall having substantially the same size as the bottom wall, and an upper peripheral wall that is vertically provided from the peripheral edge of the top wall and whose lower end edge is abutted against the upper end edge of the lower peripheral wall. It is provided with an upper partition wall suspended in the middle portion in the anteroposterior direction of the top wall so as to cooperate with the lower partition wall to separate the first space portion and the second space portion.
In the lower peripheral wall or the upper peripheral wall facing the first space portion, in the vicinity of the first air introduction hole capable of communicating between the external space and the first space portion, and the first air introduction hole. A first air introduction portion is provided which is arranged and has a first air introduction fan for introducing the air of the external space into the first space portion.
The lower peripheral wall or the upper peripheral wall facing the second space portion is provided with an exhaust lead-out portion capable of discharging the exhaust gas discharged from the exhaust gas discharge portion to the external space.
The first space portion is set to a positive pressure by the first air introduction portion .
In the lower peripheral wall or the upper peripheral wall facing the second space portion, in the vicinity of the second air introduction hole capable of communicating between the external space and the second space portion, and the second air introduction hole. A soundproof box provided with a second air introduction portion which is arranged and has a second air introduction fan for introducing the air of the external space into the second space portion . The exhaust lead portion is arranged in the vicinity of an exhaust hole capable of communicating between the external space and the second space portion, and the exhaust gas staying in the second space portion is placed in the external space. The soundproof box according to claim 1, further comprising an exhaust fan for exhausting air. It has a cylindrical shape and is provided with first and second noise suppression members arranged in the second space portion.
The first noise suppression member is attached to the peripheral edge of the second air introduction portion while the base end portion surrounds the second air introduction portion.
The soundproof box according to claim 1 or 2, wherein the second noise suppression member is attached to the peripheral edge portion of the exhaust lead-out portion while the base end portion surrounds the exhaust lead-out portion. One end of the lower peripheral wall in the lower box component and one end of the upper peripheral wall in the upper box component are connected via a hinge.
The soundproof box according to claim 1, 2 or 3, wherein each of the lower box component and the upper box component is configured to take an open posture open to the upper side. The soundproof box according to claim 1, 2, 3 or 4, wherein a plurality of handles are provided on the outer surface side of the upper box component. The soundproof box according to claim 1, 2, 3, 4 or 5, wherein the lower box component is provided with an outlet portion having a plug insertion hole for using electricity obtained by the generator. A storage space formed by a lower box component that is open upward and an upper box component that is open downward and supported by the lower box component, and is formed by the lower box component and the upper box component. A soundproof box that can accommodate a portable generator driven by an engine.
The lower box component has a rectangular shape, and forms the accommodation space with a bottom wall on which the generator is placed, a lower peripheral wall erected from the peripheral edge of the bottom wall, and air suction of the generator. It is erected in the middle part in the front-rear direction of the bottom wall so as to be separated from the first space part where the part is located and the second space part which constitutes the accommodation space and where the exhaust gas discharge part of the generator is located. It is equipped with a lower partition wall.
The upper box component has a top wall having substantially the same size as the bottom wall, and an upper peripheral wall that is vertically provided from the peripheral edge of the top wall and whose lower end edge is abutted against the upper end edge of the lower peripheral wall. It is provided with an upper partition wall suspended in the middle portion in the anteroposterior direction of the top wall so as to cooperate with the lower partition wall to separate the first space portion and the second space portion.
A first air introduction portion having a first air introduction hole capable of communicating between an external space and the first space portion on the lower peripheral wall or the upper peripheral wall facing the first space portion. Is provided,
The lower peripheral wall or the upper peripheral wall facing the second space portion is provided with an exhaust lead-out portion capable of discharging the exhaust gas discharged from the exhaust gas discharge portion to the external space.
In the lower peripheral wall or the upper peripheral wall facing the second space portion, in the vicinity of the second air introduction hole capable of communicating between the external space and the second space portion, and the second air introduction hole. A soundproof box provided with a second air introduction portion which is arranged and has a second air introduction fan for introducing the air of the external space into the second space portion .

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