JP2010229884A - Sound reduction storage tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sufficiently radiate heat generated accompanied by the drive of a compressor without providing a fan and a drive mechanism, and securing sufficient sound reduction performance. <P>SOLUTION: The sound reduction storage tool 1 includes a casing 3 in which a storage space for storing a compressor 2 is formed, and division members 17, 22, 23, 27 dividing the storage space into an intake side space 29 in which an intake port of an internal fan included in the compressor 2 is formed, and an exhaust side space 28 in which an exhaust port of the internal fan is formed by abutting on an inner wall of the casing 3 and a casing outer part of the compressor 2. At the casing 3, intake opening parts 15, 25 for introducing external air to the intake port through the intake side space 29, and exhaust opening parts 14, 26 for discharging air exhausted from the exhaust port to an outside through the exhaust side space 28 are formed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sound reduction container, and more particularly to a sound reduction container for reducing the drive sound of a compressor by storing a compressor for driving a drive tool.

  Conventionally, when interior work or the like is performed at a construction site or the like, a compressor is brought into the work site and a driving tool such as a nailing machine is often used by using high-pressure gas supplied from the compressor.

  When a compressor is used, a driving sound accompanying the rotation of the motor is generated. In particular, today, not only do you work in an environment where people are not yet living, such as the site of a large-scale new house in an emerging residential area, but also an environment where residents are already living in the neighborhood, or expansion and renovation of existing houses. There is also an increasing number of people who work in an environment where a resident lives in a building, such as (so-called remodeling work). For this reason, nowadays, there is an increasing demand for driving noise reduction in consideration of the surrounding environment of the work site.

  In order to reduce the drive sound of the compressor, the operation is performed by driving the compressor while the compressor is housed in a housing (hereinafter referred to as a sound reduction box), thereby preventing the drive sound from leaking to the surroundings. The method is adopted. This sound reduction box is provided with a fan for ventilation in order to prevent the temperature in the sound reduction box from rising so as to hinder the drive of the compressor due to heat generated by the drive of the compressor. Many (see, for example, Patent Document 1 and Patent Document 2).

Japanese Utility Model Publication No. 56-155195 Japanese Utility Model Publication No. 57-78791

  However, when the sound reduction box is provided with a fan or a drive mechanism for driving the fan, the weight of the sound reduction box tends to increase. If the weight of the sound deadening box increases, there is a risk of putting a lot of transportation burden on the operator, and further, it becomes necessary to carry the compressor in addition to the sound deadening box, so the frequency of use of the sound deadening box decreases. There was a problem that there was a risk of being.

  Furthermore, the sound reduction box provided with a fan or the like may cause a failure in a drive mechanism or the like. In particular, the work site where the sound reduction box is used is a special environment such as a construction site, so it interferes with other tools and is inadvertently vibrated and shocked, and it is not intended for the fan or its drive mechanism. Trouble may occur. For this reason, when the drive mechanism is not driven due to an unintended trouble, there is a possibility that the heat dissipation performance in the sound reduction box cannot be sufficiently ensured.

  Furthermore, the soundproof box has a tendency to increase the size of the housing because it needs to accommodate the compressor. In addition, the sound reduction box equipped with a fan is equipped with a drive mechanism, etc. There has been a problem that it is not easy to reduce the volume by folding or the like.

  On the other hand, if the fan or the drive mechanism for driving the fan is not installed in the sound reduction box, it is difficult to ensure sufficient heat dissipation performance in the sound reduction box, and the thermal switch mechanism installed in the compressor There was a problem that the compressor might automatically stop in a short time.

  The present invention has been made in view of the above problems, and can sufficiently dissipate heat generated by driving a compressor without providing a fan or a drive mechanism, and can ensure sufficient sound reduction performance. It is an object to provide a possible sound reduction container.

  In order to solve the above-described problems, a sound reduction container according to the present invention includes a housing portion in which a housing space for housing a compressor is formed, an inner wall of the housing portion, and an outside of the housing of the compressor. By being disposed in contact with each other, the storage space is divided into an intake side space where an intake port of an internal fan provided in the compressor is arranged and an exhaust side space where an exhaust port of the internal fan is arranged. An air intake opening for introducing outside air into the air intake through the air intake side space, and an air exhaust from the air exhaust through the air exhaust side space. And an exhaust opening for discharging the air to the outside.

  The sound reduction container according to the present invention is a partition that divides a storage space into an intake side space in which an intake port of an internal fan provided in a compressor is disposed and an exhaust side space in which an exhaust port of the internal fan is disposed. The housing has an intake opening for introducing outside air to the intake port through the intake side space, and exhausts air exhausted from the exhaust port through the exhaust side space to the outside. And an exhaust opening is formed. For this reason, it is possible to completely separate the intake side space for introducing outside air into the intake port of the compressor and the exhaust side space for discharging the air exhausted from the exhaust port of the compressor to the outside by a partition member. This can prevent the exhaust air and the intake air from interfering with each other to disturb the air flow. Therefore, it is possible to perform smooth intake and exhaust according to each space, and it is possible to suppress the temperature rise in the sound reduction container due to the drive of the compressor. Thus, it is possible to suppress the automatic stop of the compressor.

  Further, the partition member can divide the storage space into an intake side space where the intake port of the internal fan is arranged and an exhaust side space where the exhaust port of the internal fan is arranged. It is possible to perform smooth intake and exhaust by using. This eliminates the need for a separate intake / exhaust fan, unlike the conventional sound-reducing housing, which makes it easier to reduce the weight of the sound-reducing housing and provides convenience due to troubles such as the fan drive mechanism. It is possible to prevent a reduction in performance.

  In addition, since the housing | casing of a sound reduction accommodation tool should just be a shape which can form the storage space for accommodating a compressor, the shape of a housing | casing is not specifically limited. For example, it may be a box-shaped body such as a rectangular parallelepiped or a cube, or may be a columnar shape or a polyhedron.

  In the above-described sound reduction container, the intake opening and the exhaust opening may be formed in the casing so as to face different external directions.

  As described above, in the sound reduction container according to the present invention, the intake opening and the exhaust opening are formed in the housing portion so as to face different external directions (for example, the intake opening is located below the intake opening). Air that is exhausted from the exhaust opening to the outside of the housing is immediately introduced from the intake opening. Can be prevented.

  Furthermore, in the above-described sound reduction container, at least one of the intake opening and the exhaust opening is provided with a soundproof wall facing the opening, and the soundproof wall and the periphery of the opening A gap for allowing air to pass therethrough may be ensured.

  Thus, in the sound reduction container according to the present invention, since the soundproof wall portion facing the opening is provided, the compressor driving sound transmitted through the opening can be reduced by the soundproof wall. It becomes possible. Further, since a gap for allowing air to pass is secured between the soundproof wall and the peripheral edge of the opening, air introduced or discharged through the opening passes through the gap for allowing air to pass. Thus, it is introduced into the casing and discharged outside the casing. For this reason, even when the soundproof wall is formed so as to face the opening, it is possible to secure a sufficient space for intake and exhaust of air flowing in and out through the opening. .

  In the above-described sound reduction container, the casing includes a first casing that can directly store the compressor, and a second casing that can store the first casing. The intake opening formed in the first housing portion and the intake opening formed in the second housing portion are formed at corresponding positions so as to face the same external direction, respectively. The exhaust opening formed in the part and the exhaust opening formed in the second housing part are formed at corresponding positions so as to face the same external direction, and the partition member is formed in the first housing part Is provided in the storage space, and is a storage space in the second housing portion, and the intake opening is formed between the outer wall of the first housing portion and the inner wall of the second housing portion. A second partition member is provided for partitioning the formed space and the space in which the exhaust opening is formed. It may be of.

  As described above, in the sound reduction container according to the present invention, since the casing portion has a double structure including the first casing portion and the second casing portion, the noise reduction of the driving sound of the compressor is performed. The effect can be made more remarkable.

  In addition, the intake opening formed in the first housing portion and the intake opening formed in the second housing portion are formed at corresponding positions so as to face the same external direction, respectively. The exhaust openings formed in the second casing and the exhaust openings formed in the second casing are formed in corresponding positions so as to face the same external direction, so that the casing has a double structure. Even in this case, the flow of air passing through the exhaust opening of the first housing part and the exhaust opening of the second housing part can be made smooth. The flow of air passing through the intake opening and the intake opening of the second casing can be made smooth.

  Furthermore, the partition member provided in the first housing part makes it possible to partition the storage space in the first housing part into an intake side space and an exhaust side space, and further, the second partition member Since the space between the outer wall of one housing part and the inner wall of the second housing part can be divided into an intake side space and an exhaust side space, the case part has a double structure. Even if it exists, it can prevent that the air of an exhaust side and the air of an intake side mutually interfere, and the flow of air is disturbed. Therefore, it is possible to perform smooth intake and exhaust according to each space, and it is possible to suppress the temperature rise in the sound reduction container due to the drive of the compressor stored in the sound reduction container. With this thermal switch mechanism, it is possible to prevent the compressor from being automatically stopped in a short time.

  According to the sound reduction container according to the present invention, the partition member divides the storage space into the intake side space and the exhaust side space of the compressor, and further introduces outside air into the intake port via the intake side space. Since the intake opening and the exhaust opening for discharging the air exhausted from the exhaust port through the exhaust side space to the outside are formed, the exhaust side air and the intake side air are mutually connected. It is possible to prevent the air flow from being disturbed due to interference. Therefore, by using the internal fan provided in the compressor, smooth intake and exhaust can be realized according to each space, and the temperature rise in the sound reduction container due to the drive of the compressor can be suppressed. The compressor's thermal switch mechanism can prevent the compressor from being automatically stopped in a short time.

It is the expanded view which showed the structure of the inner box of the sound reduction box which concerns on this Embodiment. It is the expanded view which showed the structure of the inner box and outer box of the sound reduction box which concerns on this Embodiment. It is the figure which showed the flow of the air in the state which accommodated the compressor in the sound reduction box which concerns on this Embodiment, Comprising: (a) shows the state which the internal fan of a compressor is driving, (b) is the inside of a compressor. Indicates that the fan is stopped. It is drawing for demonstrating the folding storage procedure of the outer box of the sound reduction box which concerns on this Embodiment. It is drawing for demonstrating the other folding storage method of the outer box of the sound reduction box which concerns on this Embodiment.

  Hereinafter, a sound reduction box which is an example of a sound reduction container according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the sound reduction box 1 includes an inner box (first housing portion, housing portion) 3 that has a box-like body having a storage space in which a compressor 2 can be stored. An outer box (second housing part, housing part) 4 (see FIG. 2) that can accommodate the inner box 3 is schematically configured.

  The inner box 3 includes a rectangular inner box bottom surface portion 5, a pair of inner box side surface portions 6 and 7 erected on the long side end portion of the inner box bottom surface portion 5, and a short side end portion of the inner box bottom surface portion 5. An inner box front face portion 8 and an inner box rear face portion 9 which are erected and an inner box ceiling portion 10 are provided.

  The inner box bottom surface portion 5 is provided with mounting portions 12 for positioning the leg portions 2 a provided at the four corners of the compressor 2. The mounting portion 12 is formed of an elastic member in order to prevent the vibration of the compressor 2 from being transmitted to the inner box 3.

  Furthermore, several circular openings (exhaust openings) 14 are provided on the plate surface of the inner box bottom face portion 5 near the inner box front face part 8 (one place in this embodiment), and the inner box rear face part 9 A plurality of circular openings (intake openings) 15 (in the present embodiment, as an example, five places) 15 are provided on the close plate surface. The circular openings 14 and 15 have a role as an intake port and an exhaust port for suppressing a temperature rise in the inner box 3. Details thereof will be described later.

  Furthermore, an inner box bottom partition member 17 that is in pressure contact with the bottom surface portion of the compressor 2 placed on the placing portion 12 is disposed in the vicinity of the center portion of the inner box bottom surface portion 5 substantially in parallel with the short side end portion of the inner box bottom surface portion 5. is set up. The inner box bottom partition member 17 is also formed of an elastic member.

  On the inner side surface (side surface facing the compressor 2) of the inner box front surface portion 8, the inner box rear surface portion 9 and the pair of inner box side surface portions 6, 7, a sound absorbing material 18 for absorbing the drive sound of the compressor 2, 19, 20, 21 are provided. In the present embodiment, an elastic member is used as an example of the sound absorbing material 18, 19, 20, 21. Further, the sound absorbing materials 20, 21 of the inner box side surface parts 6, 7 are in pressure contact with the casing side surface of the compressor 2 mounted on the mounting part 12 of the inner box bottom surface part 5 and are provided on the inner box bottom surface part 5. In cooperation with the inner box bottom partition member 17, inner box side surface partition members 22, 23 capable of closing the gap from the bottom surface portion to the side surface portion of the compressor 2 are provided.

  The inner box ceiling part 10 is installed so as to close an upper opening formed by the inner box side face parts 6 and 7, the inner box front face part 8 and the inner box rear face part 9. Several circular openings (opening openings for intake) 25 (one place in the present embodiment) 25 are provided on the plate surface of the inner box ceiling portion 10 near the rear surface 9 of the inner box. The plate surface is provided with a plurality of circular openings (exhaust openings) 26 (in this embodiment, six places as an example). The circular openings 25 and 26 have a role as an intake port and an exhaust port for suppressing a temperature rise in the inner box 3, similarly to the circular openings 14 and 15 formed in the inner box bottom surface part 5. ing. Details thereof will be described later.

  In addition, an inner box ceiling partition member 27 that is in pressure contact with the upper surface portion of the compressor 2 that is provided is provided near the center of the lower surface of the inner box ceiling portion 10, and is provided on the pair of inner box side surface portions 6 and 7. By cooperating with the respective inner box side surface partitioning members 22, 23, the gap from the upper surface portion to the side surface portion of the compressor 2 can be closed.

  As described above, the inner box bottom partition member 17, the inner box side partition members 22 and 23, and the inner box ceiling partition member 27 are provided as partition members that partition the space between the inner wall of the inner box 3 and the outside of the casing of the compressor 2. It is done. By these partition members 17, 22, 23, and 27, the internal space (storage space) of the inner box 3 is partitioned into a space 28 on the inner box front surface portion 8 side and a space 29 on the inner box rear surface portion 9 side. become.

  The detailed installation positions of the inner box bottom partition member 17, the inner box side partition members 22 and 23, and the inner box ceiling partition member 27 in the inner box 3 are determined based on the structure of the compressor 2. In general, the compressor 2 is provided with a cooling internal fan 30 (see FIG. 3) in order to suppress a temperature rise of a driving unit such as an internal motor. The internal fan 30 normally has a structure in which air is introduced from one side portion of the casing of the compressor 2 and discharged from the opposite side portion (other side portion).

  For this reason, in the case where the compressor 2 is installed in the inner box 3 such that the air introduction side portion in the compressor 2 is located on the inner box rear surface portion 9 side and the air exhaust side portion is located on the inner box front surface portion 8 side. The inner box bottom partition member 17, the inner box side partition members 22 and 23, and the inner box ceiling partition member 27 are installed so that the air introduction side portion and the exhaust side portion of the compressor 2 are different from each other. Thus, by determining the installation positions of the inner box bottom partition member 17, the inner box side partition members 22 and 23, and the inner box ceiling partition member 27, the space 29 on the inner box rear surface portion 9 side in the inner box 3 is changed. The compressor 2 is used as an intake space (intake side space), and the space 28 on the inner box front surface portion 8 side in the inner box 3 is used as an exhaust space (exhaust side space) in the compressor 2. Become.

  As shown in FIG. 2, the outer box 4 includes an inner box bottom face part 5, a pair of inner box side face parts 6, 7, an inner box front face part 8, an inner box rear face part 9, and an inner box ceiling part 10. The outer box bottom face part 35, the pair of outer box side face parts 36, 37, the outer box front face part 38, the outer box rear face part 39, and the outer box ceiling part 40 are provided. The outer box 4 has a shape that is larger than the inner box 3 so that the inner box 3 can be accommodated therein. Specifically, the outer box bottom surface portion 35 is formed with a size that is slightly larger than the inner box bottom surface portion 5, and the outer box side surface portions 36 and 37 are formed with a size that is slightly larger than the inner box side surface portions 6 and 7. The outer box front surface portion 38 is formed with a size that is slightly larger than the inner box front surface portion 8, the outer box rear surface portion 39 is formed with a size that is slightly larger than the inner box rear surface portion 9, and the outer box The ceiling part 40 is formed with a size that is slightly larger than the inner box ceiling part 10.

  On the upper surface of the outer box bottom surface portion 35, four upper surface support portions 42 that are in contact with the lower surface of the inner box 3 (the lower surface of the inner box bottom surface portion 5) and support the inner box 3 are provided. The upper surface support portion 42 is formed of an elastic member, and has a role of reducing vibration transmitted through the inner box 3 when the compressor 2 is driven. Further, four lower surface support portions 43 are provided on the lower surface of the outer box bottom surface portion 35 for securing the intake / exhaust space 41 between the outer box 4 and the floor surface on which the outer box 4 is placed. Yes. The lower surface support portion 43 is also formed of an elastic member, and has a role of reducing vibration transmitted through the inner box 3 when the compressor 2 is driven. The upper surface support portion 42 and the lower surface support portion 43 are provided corresponding to the installation position of the placement portion 12 provided on the inner box bottom surface portion 5. Thus, since the compressor 2 is supported by the mounting portion 12, the upper surface support portion 42, and the lower surface support portion 43 formed by an elastic member, it is possible to reduce the vibration to the outside of the compressor 2. ing.

  The outer box bottom surface portion 35 is provided with a plurality of circular openings 44 and 45 corresponding to the circular openings 14 and 15 formed in the inner box bottom surface portion 5. Specifically, several circular openings (exhaust openings) 44 are formed on the plate surface near the front surface portion 38 of the outer box (one location in the present embodiment), and the plate surface near the rear surface portion 39 of the outer box is formed. Several (5 in this embodiment) circular openings (intake openings) 45 are formed. Thus, since the circular openings 44 and 45 formed in the outer box bottom surface portion 35 are provided corresponding to the installation positions of the circular openings 14 and 15 formed in the inner box bottom surface portion 5, the sound reduction box 1 Even in the case of a double structure composed of the box 3 and the outer box 4, the air passing through the circular openings 14 and 15 of the inner box bottom surface portion 5 passes through the circular openings 44 and 45 of the outer box bottom surface portion 35. It is possible to pass smoothly, and it is possible to suppress the temperature rise in the sound reduction box 1 by this smooth intake / exhaust flow.

  Also, an outer box bottom upper partition member 47 is provided on the upper surface of the outer box bottom surface part 35 to partition the space between the outer box 4 and the inner box 3 by contacting the lower surface of the inner box bottom surface part 5. In the vicinity of the center of the bottom surface of the bottom surface portion 35 of the outer box, a space 41 between the bottom surface portion 35 of the outer box and the floor surface formed by the lower surface support portion 43 material is brought into contact with the floor surface on which the outer box 4 is installed. An outer box bottom lower partition member 48 for partitioning (see FIG. 3) is provided. Similarly, the space between the outer box 4 and the inner box 3 is partitioned by contacting the inner box side surface parts 6 and 7 on the side surfaces of the outer box side surface parts 36 and 37 on the inner box 3 side. Outer box side surface partition members 50 and 51 are provided.

  On the other hand, the outer box ceiling portion 40 is formed by stacking two top plates 52 and 53, an outer box ceiling upper partition member 55 having a long plate shape, and five gap forming members 56. Specifically, the outer box ceiling upper partition member 55 arranged in a position slightly closer to the center of the top plates 52 and 53 and in parallel with the short side ends of the top plates 52 and 53, and the top plates 52 and 53 The five gap forming members 56 arranged at the four corner positions and the center position are sandwiched between the top plate 52 and the top plate 53.

  Further, of the two top plates 52 and 53, a plurality of circular openings are formed on the surface of the lower top plate 53 so as to correspond to the circular openings 25 and 26 formed in the inner box ceiling portion 10. Portions 60 and 61 are formed. Specifically, several (1 in this embodiment) circular openings (intake openings) 60 are formed on the plate surface near the outer box rear surface 39, and the plate surface near the outer box front surface 38 is formed. Several (6 in the present embodiment) circular openings (exhaust openings) 61 are formed.

  Thus, since the circular openings 60 and 61 formed in the top plate 53 are provided corresponding to the installation positions of the circular openings 25 and 26 formed in the inner box ceiling part 10, the sound reduction box 1 is provided in the inner box 53. Even in the case of a double structure composed of the box 3 and the outer box 4, the air passing through the circular openings 25, 26 formed in the inner box ceiling portion 10 becomes circular openings 60 of the top plate 53. , 61 can be smoothly passed, and the temperature rise in the sound reduction box 1 can be suppressed by this smooth flow of intake and exhaust.

  Further, by sandwiching the outer box ceiling upper partition member 55 and the gap forming member 56 between the top plate (soundproof wall portion) 52 and the top plate 53, the top plate 52 faces the circular openings 60 and 61. In addition, a space (a gap for allowing air to pass) 54 (see FIG. 3) is secured between the two top plates 52 and 53, and the two top plates 52 and 53 are connected to each other from the circular openings 60 and 61. A space connected to the gap 54 is formed as a space communicating from the inside of the outer box 4 to the outside.

  Further, on the lower surface of the lower top plate 53, the outer box ceiling lower partition member 64 for partitioning the space between the inner box 3 and the outer box 4 in cooperation with the outer box side surface partition members 50, 51. Is provided.

  As described above, the outer box bottom upper partition member 47, the outer box side partition members 50 and 51, and the outer box ceiling lower partition member 64 are provided as a second partition member that partitions the space between the inner box 3 and the outer box 4. . By these second partition members 47, 50, 51, 64, the space between the inner box 3 and the outer box 4 is divided into a space on the outer box front face 38 side and a space on the outer box rear face 39 side. Will be.

  FIG. 3A is a diagram showing the flow of air in the sound reduction box 1 when the internal fan 30 of the compressor 2 is driven in a state where the inner box 3 containing the compressor 2 is housed in the outer box 4. FIG. 3B is a diagram showing the flow of air in the sound reduction box 1 when the internal fan 30 of the compressor 2 is stopped. 3 (a) and 3 (b), the compressor 2 is housed in the sound reduction box 1 such that the intake side of the internal fan 30 provided in the compressor 2 faces the rear surface portion 9 of the inner box.

  When the internal fan 30 of the compressor 2 is driven, the air on the intake side (space 29) of the compressor 2 is sucked into the compressor 2 as the internal fan 30 rotates. In this case, in the space 29 on the intake side of the compressor 2, five circular openings 15 and 45 are provided in the bottom surface parts 5 and 35 of the inner box 3 and the outer box 4, respectively, and the circular openings are provided in the ceiling parts 10 and 53. 25 and 60 are provided in one place, so that air flows from the outside of the sound reduction box 1 through the circular openings 15, 45, 25 and 60 and is led into the compressor 2. . Therefore, in the space 29 on the intake side of the compressor 2, an air flow as indicated by an arrow A shown in FIG.

  On the other hand, the air discharged along with the rotation of the internal fan 30 of the compressor 2 is discharged into the space 28 of the inner box 3 near the front side 8 of the inner box. In the space 28 on the exhaust side of the compressor 2, six circular openings 26, 61 are provided in the ceiling portions 10, 53 of the inner box 3 and the outer box 4, and the circular openings 14, 61 are provided in the bottom surfaces 5, 35. Since each of the 44 is provided, high temperature air heated by the compressor 2 is discharged to the outside of the sound reduction box 1 through the circular openings 26, 61, 14, 44. Therefore, in the space 28 on the exhaust side of the compressor 2, an air flow as indicated by an arrow B shown in FIG.

  Thus, the partition members 17, 22, 23, 27 are installed in the space inside the inner box 3, and the second partition members 47, 50, 51, 64 are installed in the space between the inner box 3 and the outer box 4. For this reason, the space 29 on the intake side and the space 28 on the exhaust side of the compressor 2 can be reliably separated. For this reason, it is possible to prevent the air on the exhaust side and the air on the intake side from interfering with each other to disturb the air flow, and smooth intake and exhaust can be performed according to each space. It becomes. Therefore, the temperature rise in the sound reduction box 1 accompanying the compressor 2 installed in the sound reduction box 1 can be suppressed, and the compressor 2 can be prevented from being automatically stopped in a short time by the thermal switch mechanism. It becomes.

  Further, since intake and exhaust are performed using the internal fan 30 installed in the compressor 2, it is not necessary to separately install a fan for intake and exhaust as in the conventional sound reduction box 1. For this reason, it is easy to reduce the weight of the sound reduction box 1, and it is possible to prevent the convenience from being reduced due to troubles such as a fan drive mechanism.

  In particular, since the exhaust side circular openings 26 and 61 are formed on the ceiling surfaces 10 and 53 side, the exhaust air having high temperature can be easily guided upward. It can be easily guided to the outside. Further, the intake side circular openings 15, 45 are formed on the bottom surface parts 5, 35 side, and the intake side circular openings 15, 45 and the exhaust side circular openings 26, 61 have different external directions. The air discharged from the exhaust side circular openings 26 and 61 to the outside of the sound reduction box 1 is immediately introduced into the intake side circular openings 15 and 45 without being cooled. Can be prevented.

  Further, since the sound reduction box 1 has a double structure of the inner box 3 and the outer box 4, it is possible to prevent the drive sound of the compressor 2 from easily leaking to the outside. Specifically, in the case of a single structure (for example, only the inner box 3), the driving sound can be reduced by about 10d as compared with the case where the sound reduction box 1 is not used. In the case of a heavy structure (for example, a structure constituted by the inner box 3 and the outer box 4), it is possible to reduce driving sound by about 15d as compared to the case where the sound reduction box 1 is not used.

  Further, the outer box ceiling portion 40 has a double structure with the two top plates 52 and 53, and the top plate 52 faces the circular openings 60 and 61. The driving sound of the compressor 2 transmitted through the circular openings 25, 26, 60, and 61 is suppressed by the top plate 52, and a sufficient soundproofing effect can be exhibited.

  Further, the outer box ceiling portion 40 has a double structure by the two top plates 52 and 53, and is connected to the gap 54 between each of the circular openings 60 and 61 and the two top plates 52 and 53. Since the space is formed as a space communicating from the inside of the outer box 4 to the outside, even if the top plate 52 is not formed with a circular opening, the inner box 3 and the outer box 4 Air introduced and discharged through the circular openings 25, 26, 60, 61 is introduced into the sound reduction box 1 and discharged out of the box through the gap 54 between the two top plates 52, 53. Will be. For this reason, it is possible to secure a sufficient space for air intake and exhaust.

  On the other hand, since the lower surface support part 43 is formed on the outer box bottom part 35, a space 41 for intake and exhaust is secured below the outer box 4, and a circular opening 44 formed in the outer box bottom part 35 is interposed. Thus, it is possible to secure a discharge path for the air discharged and an introduction path for the air introduced through the circular opening 45, and a sufficient intake / exhaust amount can be ensured. Furthermore, since the outer box bottom lower part 35 is provided with an outer box bottom lower partitioning member 48 that partitions the space 41 between the outer box and the floor, the air discharged from the exhaust circular opening 44 of the outer box bottom part 35 is It is possible to prevent direct introduction into the circular opening 45 on the intake side through the space 41 below the outer box 4.

  Further, since the circular openings 25 and 60 formed in the ceiling portions 10 and 40 and the circular openings 15 and 45 formed in the bottom surface portions 5 and 35 are formed so as to have different outward directions, the compressor 2 Even when the internal fan 30 installed in the engine stops, the upper circular openings 25 and 60 as shown by the arrow C in FIG. A flow (or a flow in the opposite direction) through which air escapes to 15 and 45 can be generated. For this reason, it is possible to smoothly ventilate the space 29 on the intake side, and it is possible to suppress a temperature rise in the sound reduction box 1.

  On the other hand, in the space 28 on the exhaust side of the compressor 2, the circular openings 26 and 61 formed in the ceiling portions 10 and 40 and the circular openings 14 and 44 formed in the bottom surface portions 5 and 35 are different outward directions. Therefore, even when the internal fan 30 installed in the compressor 2 is stopped, the lower circular shape as shown by the arrow D in FIG. A flow (or a flow in the opposite direction) through which air escapes from the openings 14 and 44 to the upper circular openings 26 and 61 can be generated. For this reason, it becomes possible to ventilate smoothly also in the space 28 on the exhaust side, and the temperature rise in the sound reduction box 1 can be suppressed.

  Furthermore, unlike the conventional sound reduction box, the sound reduction box 1 does not need to be provided with a fan for promoting air circulation in the box. It is possible to suppress an increase in the weight of.

  Next, a structure for compactly folding and storing the above-described sound reduction box 1 will be described.

  When the sound reduction box 1 is used, it is necessary to transport the sound reduction box 1, the compressor 2, the driving tool, and the like to the work site. Here, since the sound reduction box 1 has a structure in which the compressor 2 is housed, there is a problem that the sound reduction box 1 has a larger casing than the compressor and is difficult to carry. Thus, when the carrying burden of the sound reduction box 1 is heavy, there is a problem in that the frequency of use of the sound reduction box 1 is likely to be reduced, and the worker does not actively use the sound reduction box 1 at the work site. .

  Therefore, by adopting a structure in which the sound reduction box 1 can be folded and stored, the sound reduction box 1 can be easily carried and the conveyance performance of the sound reduction box 1 can be improved.

  FIG. 4 is a drawing for explaining the folding storage procedure of the sound reduction box 1. Note that the sound reduction box 1 according to the present embodiment has a double structure of the inner box 3 and the outer box 4, but only the folding structure of the outer box 4 is shown in FIG. 4. Also in the inner box 3, by adopting a structure similar to the folding structure shown in FIG. 4, it is possible to reduce the volume of the box and improve the convenience of carrying.

  First, hinges 70 are provided at the lower end portions of the outer box side surfaces 36 and 37, the outer box front face 38 and the outer box rear face 39 of the outer box 4 so as to be able to tilt toward the inner side of the outer box 4. One of the hinges 70 is fixed, and the other of the hinges 70 is fixed to the end edge of the outer box bottom surface 35. Further, each of the outer box side face portions 36, 37, the outer box front face portion 38, and the outer box rear face portion 39 has a box shape by cooperating with other adjacent plate portions in a state where each plate portion is erected. A locking metal fitting 73 and a locked metal fitting 72 are provided. When assembling the outer box 4 into a box shape, the locking metal fitting 73 provided on the adjacent one plate portion is engaged with the locked metal fitting 72 provided on the other adjacent plate portion. In this way, by locking the adjacent plate portions with the locking fitting 73 and the locked fitting 72, each plate portion can be prevented from falling inward.

  In the case of folding and storing the outer box 4 configured as described above, first, each locking fitting 73 is removed from the locked fitting 72 so that each plate portion can be tilted to the inside of the outer box 4. To do. Then, after the one outer box side surface portion 37 is tilted inward (see FIG. 4A), the outer box front surface portion 38 and the outer box rear surface portion 39 are tilted inward (see FIG. 4B). ) Finally, the remaining outer box side face portion 36 is tilted inward (see FIG. 4C), whereby each plate portion can be superimposed on the outer box bottom face portion 35 (FIG. 4D). reference). Finally, the outer box 4 of the sound reduction box 1 can be formed into a plate-like body in which the plate parts are laminated by overlapping the outer box ceiling part 40 (not shown).

  Thus, by folding and storing the box-shaped sound reduction box 1 in a plate state, the volume of the sound reduction box 1 is reduced, so that it is easy to carry. Further, since the folded and stored state becomes a plate-like body, the sound reduction box 1 can be easily carried by attaching a handle, a shoulder strap or the like to the plate state. Further, when the soundproof box 1 is transported using a cart or the like or when it is housed in the luggage compartment of the car, it is a plate-like body, so that it can be easily accommodated and transported.

  The reason why the sheet can be folded in this way is that the sound reduction box 1 according to the present embodiment is not provided with a cooling fan or a driving mechanism thereof. Therefore, in the case where a cooling fan or its driving mechanism is provided like a conventional sound reduction box, even if it is folded into a plate-like body, the fan or the driving mechanism may be obstructed and folded. It becomes difficult. Moreover, even if it is possible to fold the sound reduction box body by making the fan and drive mechanism detachable from the sound reduction box, the load of attaching / detaching work and the burden of transporting the removed fan, etc. are generated. It is difficult to ensure the mobility like the sound reduction box 1 according to the present embodiment.

  FIG. 5 is a view showing a configuration different from the folding structure shown in FIG. Unlike FIG. 4, in FIG. 5, one outer box side part 36 and the outer box front part 38 are foldably attached by a hinge 70, and the other outer box side part 37 and the rear side of the outer box are attached. The surface 39 is foldably attached by a hinge 70. The outer box side face 36, the outer box front face part 38, the outer box side face part 37, and the outer box rear face part 39 can be separated from the outer box bottom face part 35 and the outer box ceiling part 40. The above-described locking metal fitting 73 and locked metal fitting 72 are adjacent to the outer box side face 36, the outer box front face 38, the outer box side face 37, the outer box rear face 39, and the outer box bottom face 35, respectively. It is provided so as to correspond to the plate portion, and a box shape can be formed by fixing each plate portion using the locking metal fitting 73 and the locked metal fitting 72.

  When the sound reduction box 1 is folded and stored, the locking metal fittings 73 and the locked metal fittings 72 are unlocked, and the outer box side face 36, the outer box front face 38, the outer box side face 37, and the outer box rear The surface portion 39, the outer box bottom surface portion 35, and the outer box ceiling portion 40 are separated. Then, the outer box side surface portion 36 and the outer box front surface portion 38 folded with respect to the outer box bottom surface portion 35 are stacked and mounted, and the folded outer box side surface portion 37 and the outer box rear surface portion 39 are stacked thereon. Finally, by placing the outer box ceiling portion 40, the sound reduction box 1 can be folded and stored in a plate-like body as in the diagram shown in FIG.

  The folding storage method shown in FIG. 5 has a feature that the side plate portions 36, 37, 38, 39 are not provided around the outer box bottom surface portion 35 in the first stage. Therefore, first, after placing the inner box bottom surface portion 5 on the outer box bottom surface portion 35 and installing a heavy compressor on the inner box bottom surface portion 5, the side plate portions of the inner box 3 and the outer box 4 and Since the ceiling part can be attached, it is possible to reduce the installation burden and assembly burden of the operator as compared to the structure shown in FIG. 4 in which the compressor 2 cannot be installed unless a box-like body is formed. Become.

  In FIG. 5, the outer box 4 is described as an example, but the inner box 3 can be configured similarly. Also, the plate-like body folded and stored by the method shown in FIG. 5 can have the same effect as the plate-like body folded and stored by the method shown in FIG.

  Although the sound deadening box according to the present invention has been described in detail with reference to the drawings, the sound deadening box according to the present invention is not limited to the configuration shown in the embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. It is understood.

  For example, in the sound reduction box 1 shown in the present embodiment, the partition members 17, 22, 23, and 27 are provided near the center of the sound reduction box, but the installation positions of the partition members 17, 22, 23, and 27 are It can be changed according to the state of the intake port position and the exhaust port position of the compressor. Since the partition members 17, 22, 23, and 27 have a role of partitioning the compressor intake space 29 and the exhaust space 28, the partition members 17, 22, 23, and 27 correspond to the intake port position and the exhaust port position of the compressor 2. The installation position will be changed.

  Furthermore, in this Embodiment, although the sound reduction box 1 comprised by the double structure of the inner box 3 and the outer box 4 was demonstrated, the structure of the sound reduction box 1 is not necessarily limited to a double structure. Absent. When the volume of the drive sound of the compressor 2 is low, or when the soundproof performance of the plate member and the elastic member of the sound reduction box 1 is high, the structure of the sound reduction box 1 can be a single (single) structure. In addition, a triple or more structure may be used as necessary.

  Moreover, in this Embodiment, although the case where the sound reduction box 1 was box shape was demonstrated as an example, the shape of the sound reduction box 1 is not necessarily limited to box shape (rectangular shape or cube shape), and others Any shape, such as a cylindrical shape, a polygonal column shape, or a dome shape, may be used as long as it has a storage space for storing the compressor 2.

1 ... Sound reduction box (sound reduction storage tool)
2 ... Compressor 2a ... (compressor) leg 3 ... inner box (first housing, housing)
4 ... Outer box (second casing, casing)
5 ... Inner box bottom face part 6, 7 ... Inner box side face part 8 ... Inner box front face part 9 ... Inner box rear face part 10 ... Inner box ceiling part 12 ... Placement part 14, 26, 44, 61 ... Circular opening (for exhaust Aperture)
15, 25, 45, 60 ... circular opening (intake opening)
17 ... Inner box bottom partition member (partition member)
18, 19, 20, 21 ... sound absorbing material 22, 23 ... inner box side surface partition member (partition member)
27 ... Inner box ceiling partition member (partition member)
28 ... Space (exhaust side space)
29 ... Space (intake side space)
30 ... Inner fan 35 ... Outer box bottom face part 36, 37 ... Outer box side face part 38 ... Outer box front face part 39 ... Outer box rear face part 40 ... Outer box ceiling part 41 ... Space (between the lower surface of the outer box and the floor surface space)
42 ... upper surface support part 43 ... lower surface support part 47 ... outer box bottom upper partition member (second partition member)
48 ... Outer box bottom lower partition member 50, 51 ... Outer box side partition member (second partition member)
52… top plate (soundproof wall)
53 ... top 54 ... space (gap for passing air)
55 ... Outer box ceiling upper partition member 56 ... Gap forming member 64 ... Outer box ceiling lower partition member (second partition member)
70 ... Hinge 72 ... Locked metal fitting 73 ... Locking metal fitting

Claims (4)

A housing part in which a storage space for storing the compressor is formed;
The housing space is arranged in contact with the inner wall of the housing and the outside of the housing of the compressor, whereby the storage space is arranged with an intake side space in which an intake port of an internal fan provided in the compressor is disposed, and the internal A partition member that divides into an exhaust side space in which an exhaust port of the fan is disposed,
An intake opening for introducing outside air into the intake port through the intake side space and an air exhausted from the exhaust port through the exhaust side space are exhausted to the housing unit. A sound-reducing container, characterized in that an exhaust opening is formed.   The sound reduction container according to claim 1, wherein the intake opening and the exhaust opening are formed in the casing so as to face different external directions. At least one of the intake opening and the exhaust opening is provided with a soundproof wall facing the opening, and air is passed between the soundproof wall and the peripheral edge of the opening. The sound-reducing accommodation tool according to claim 1, wherein a clearance for securing the clearance is secured. The casing has a first casing that can directly store the compressor, and a second casing that can store the first casing.
The intake opening formed in the first housing part and the intake opening formed in the second housing part are formed at corresponding positions so as to face the same external direction, respectively.
The exhaust opening formed in the first housing part and the exhaust opening formed in the second housing part are formed at corresponding positions so as to face the same external direction, respectively.
The partition member is provided in a storage space of the first housing part,
A storage space in the second housing part, wherein the intake opening is formed between the outer wall of the first housing part and the inner wall of the second housing part, and the exhaust air The sound reduction container according to any one of claims 1 to 3, further comprising a second partition member that partitions the space in which the opening is formed.

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