Dust removal device

Abstract

To provide a dust collector which may achieve reduction of noise.SOLUTION: A dust collector includes a side surface unit 2 having intake ports 13 provided at a housing 10, discharge ports 14 provided at the housing 10, and a blower 30 which discharges outside air suctioned through the intake ports 13 from the discharge ports 14. The dust collector further includes a sound insulation structure which reduces noise of the side surface unit 2.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to the technology of dust removal devices. [Background technology]

[0002] Conventionally, dust removal devices that remove dust by discharging air have been publicly known, as described in Patent Document 1, for example.

[0003] The dust removal device (air shower device) described in Patent Document 1 comprises an air shower room that is enclosed and has an air blowing unit that is installed on the side wall of the air shower room and blows air into the air shower room. By blowing air from the air blowing unit toward users who enter the air shower room, dust adhering to the users can be removed (dust removal).

[0004] Here, the dust removal device described in Patent Document 1 is intended for use in various factories (semiconductor manufacturing factories, food factories, etc.), but it is also conceivable that the dust removal device could also be used in accommodation facilities such as hotels and commercial facilities such as shopping malls.

[0005] However, hotels and the like require quieter environments (lower noise levels) than factories, and so there is a demand for technology that can reduce the noise generated by dust removal equipment. In particular, when dust removal equipment is installed in hotels and the like, it is possible that an enclosed space (air shower room) such as that described in Patent Document 1 cannot be provided so as not to obstruct the flow of people, making technology for reducing noise all the more important. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2017-203582 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dust removal device capable of reducing noise. [Means for solving the problem]

[0008] The problem to be solved by the present invention is as described above, and the means for solving this problem will now be described.

[0009] That is, in claim 1, A hollow floor portion, a separate floor portion A dust removal device having a dust removal unit with an intake port provided in a housing, an exhaust port provided in the housing, and a blower that exhausts outside air drawn in through the intake port from the exhaust port, the dust removal device having a soundproof structure that reduces noise from the dust removal unit. The soundproof structure is configured to include a guide member connected to the air intake port of the dust removal unit and having a labyrinth structure that guides outside air from an opening formed in a side surface of the floor portion to the air intake port, the guide member constituting the floor portion of the dust removal device, and the labyrinth structure is formed inside the floor portion so as to extend from the opening portion to the air intake port. It is something.

[0010] In claim 2, the soundproof structure is configured to include a partition section that divides the internal space of the housing into a first space on the intake port side and a second space on the exhaust port side, and the intake port or the exhaust port formed on the other side of the partition section different from the one side on which the blower that pressurizes air from the first space to the second space is located.

[0011] In claim 3, the soundproof structure is configured to include the intake port or the discharge port formed on the side opposite to the blower across the partition.

[0012] In claim 4, the soundproof structure is configured to include a guide portion that guides air flowing from the intake port or the discharge port formed on the other side of the partition to the blower so that it bypasses the partition.

[0013] In claim 5, the soundproof structure is configured to include a sound absorbing material provided in the housing. [Effects of the Invention]

[0016] The present invention has the effect of reducing noise. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic diagram showing the overall configuration of a dust removal device according to a first embodiment; [Figure 2] FIG. 2 is a schematic front view of the side unit according to the first embodiment. [Figure 3] (a) A schematic front cross-sectional view showing the inside of the side unit. (b) A schematic side cross-sectional view of the same. [Figure 4] 10A is a schematic front cross-sectional view of a side unit according to a first modified example, FIG. 10B is a schematic front cross-sectional view of a side unit according to a second modified example, and FIG. 10C is a schematic front cross-sectional view of a side unit according to a third modified example. [Figure 5] 10A is a schematic front cross-sectional view of a side unit according to a fourth modified example, FIG. 10B is a schematic front cross-sectional view of a side unit according to a fifth modified example, and FIG. 10C is a schematic front cross-sectional view of a side unit according to a sixth modified example. [Figure 6] FIG. 5 is a schematic diagram showing the overall configuration of a dust remover according to a second embodiment. [Figure 7] 10A is a schematic front cross-sectional view of a side unit according to a second embodiment, and FIG. DETAILED DESCRIPTION OF THE INVENTION

[0018] A dust remover 1 according to a first embodiment of the present invention will be described below.

[0019] The dust removal device 1 shown in Fig. 1 removes dust adhering to a target person or object (hereinafter referred to as "target person" for convenience). Here, dust refers to particles suspended in the air, such as pollen. In addition to pollen, dust includes particles such as sand dust, fine dust, and PM2.5 (particulate matter with a particle size of 2.5 μm or less).

[0020] The dust remover 1 includes a pair of side units 2 and a top surface portion 3 provided across the upper ends of the pair of side units 2. The dust remover 1 is formed in a gate shape that allows passage inside (inside the pair of side units 2 and below the top surface portion 3). The side units 2 can discharge air toward the inside.

[0021] The dust removal device 1 according to this embodiment is assumed to be placed, for example, at the entrance of a hotel or other accommodation facility or a shopping mall or other commercial facility. The dust removal device 1 can remove dust adhering to guests of the hotel or other facility by blowing air at the guests as they pass through the dust removal device 1. This can prevent dust from entering the building of the hotel or other facility.

[0022] The following describes in detail the configuration of the side unit 2 of the dust remover 1, which is equipped with a mechanism for discharging air. Note that the configuration of the pair of side units 2 provided in the dust remover 1 is roughly symmetrical, so the following describes only one of the side units 2. The following description also defines the front-to-rear direction, left-to-right direction, and up-to-down direction based on the arrows in the figure. In this embodiment, the direction toward which the side of the side unit 2 on which the discharge port 14, described later, is provided faces is defined as the forward direction.

[0023] 2 and 3, the side unit 2 mainly includes a housing 10, a filter 20, a blower 30, and a sound-absorbing material 40. For convenience of illustration, the sound-absorbing material 40 is shown only in FIG. 3(b).

[0024] The housing 10 is a component that forms the outer shell of the side unit 2. The housing 10 is formed in the shape of a hollow box that can accommodate the other components that make up the side unit 2. The housing 10 is formed in the shape of a rectangular parallelepiped having a front side surface 10F, a rear surface 10B, a left side surface 10L, a right side surface 10R, a top surface 10U, and a bottom surface 10D. The housing 10 mainly comprises a partition section 11, a guide section 12, an intake port 13, and an exhaust port 14.

[0025] The partition 11 is a member that divides the internal space of the housing 10. The partition 11 is formed in the shape of a rectangular frame when viewed from the front, and is provided inside the housing 10. As a result, the partition 11 divides the internal space of the housing 10 into a space outside the partition 11 (hereinafter referred to as a "first space S1") and a space inside the partition 11 (hereinafter referred to as a "second space S2"). The partition 11 is disposed approximately in the center of the housing 10 when viewed from the front. The partition 11 is disposed so as to be spaced apart from the left side surface 10L, the right side surface 10R, the top surface 10U, and the bottom surface 10D of the housing 10.

[0026] The guide portion 12 shown in FIG. 3(b) is a member that guides air that has passed through a filter 20 (described later) to the outlet 14. The guide portion 12 is disposed inside the partition portion 11 (second space S2). The guide portion 12 is disposed so as to connect the filter 20 (described later) and the front side surface 10F of the housing 10. For convenience, the guide portion 12 is not shown in the drawings other than FIG. 3(b).

[0027] 2 and 3 is an opening for introducing air (outside air) from outside the housing 10 into the housing 10. The air intake 13 is formed so as to penetrate the front side surface 10F of the housing 10 from front to back. The air intake 13 is formed on one side of the partition 11 (specifically, above the partition 11). The air intake 13 is formed in each of the upper left and upper right parts of the front side surface 10F (two in total).

[0028] The outlet 14 is an opening for discharging air inside the housing 10 to the front of the housing 10. The outlet 14 is formed so as to penetrate the front side surface 10F of the housing 10 from front to back. The outlet 14 is formed so as to be located inside the partition portion 11 in a front view. A plurality of outlets 14 (six in this embodiment) are formed at appropriate intervals from each other.

[0029] The filter 20 purifies the air by removing dust particles and the like from the circulating air. The filter 20 is disposed inside the partition 11 (second space S2). Various types of air filters (e.g., HEPA filters, medium-performance air filters, etc.) can be used as the filter 20. The filter 20 is provided at the rear end of the guide portion 12. By disposing it in this manner, the air that has passed through the filter 20 and been purified is guided by the guide portion 12 and discharged forward from the discharge port 14.

[0030] The blower 30 is a device that applies energy to air to generate an airflow. Various types of blower (e.g., centrifugal blower, axial blower, etc.) can be used as the blower 30. The blower 30 is provided in the lower part of the housing 10. The blower 30 is disposed on a side of the partition 11 that is different from the side on which the air intake 13 is formed. Specifically, the air intake 13 is formed above the partition 11, while the blower 30 is disposed below the partition 11. As described above, in this embodiment, the blower 30 is disposed on the side opposite the air intake 13 across the partition 11. The outlet of the blower 30 is connected to the lower part of the partition 11 and communicates with the inside of the partition 11 (second space S2). The blower 30 can suck air from the first space S1 and pump it into the second space S2.

[0031] The sound-absorbing material 40 shown in FIG. 3(b) is a member that attenuates sound generated in the dust removal device 1 (side unit 2). Various materials (e.g., glass wool, urethane sponge, etc.) can be used as the sound-absorbing material 40. In this embodiment, as an example, glass wool with a density of 32K and a thickness of 25 mm or more (preferably 50 mm or more) is assumed to be used. It is desirable to use a material with a sound-absorbing effect equivalent to or greater than that of glass wool (e.g., a sound absorption coefficient of approximately 0.8 at a center frequency of 500 Hz). The sound-absorbing material 40 is appropriately provided inside the housing 10 (first space S1 and second space S2). In this embodiment, as shown in FIG. 3(b), the sound-absorbing material 40 is provided on the front side surface 10F, bottom surface 10D, and back surface 10B (below the partition 11) of the housing 10, and the bottom surface of the partition 11. The arrangement of the sound-absorbing material 40 is not limited thereto, and the sound-absorbing material 40 can be arranged arbitrarily inside the housing 10.

[0032] The dust remover 1 according to this embodiment is provided with a pair of left and right side units 2 configured as described above. The manner in which air is discharged by the side unit 2 configured as described above will be described below.

[0033] When the blower 30 is activated, as shown in FIG. 3(a), outside air is drawn into the housing 10 through the air intake 13. The air drawn into the housing 10 through the air intake 13 flows downward through gaps (flow paths) formed between the partition 11 and the side surfaces (left side surface 10L and right side surface 10R) of the housing 10. The air that reaches the bottom of the partition 11 changes its flow direction to the inside on the left and right sides and flows toward the blower 30. The air is pressure-fed by the blower 30 from the first space S1 to the second space S2 (inside the partition 11).

[0034] The air compressed and sent to the second space S2 flows through the filter 20 and is discharged forward from the outlet 14. By blowing the air discharged from the outlet 14 toward the subject, dust adhering to the subject can be removed. In particular, in this embodiment, the pair of side units 2 are configured symmetrically, so that the air discharged from the symmetrically arranged outlets 14 can effectively remove dust adhering to the subject.

[0035] In this embodiment, the air intake 13 is disposed above the partition 11, and the fan 30 is disposed below the partition 11. That is, by disposing the air intake 13 and the fan 30 at opposite positions across the partition 11, the distance between the air intake 13 and the fan 30 (air flow path) is increased. In this embodiment, the air flow path is configured to be 2 m or longer. By ensuring a long air flow path in this manner, noise leaking from the air intake 13 to the outside via the flow path (e.g., the operating noise of the fan 30) is attenuated, thereby reducing the noise of the dust removal device 1. In particular, in this embodiment, noise can be effectively reduced by providing sound-absorbing material 40 inside the housing 10.

[0036] In addition, in this embodiment, as shown in Figure 3(a), the air flow path from the air intake 13 to the blower 30 is bent, which increases the opportunity for air vibrations to come into contact with the inner wall surface (sound-absorbing material 40) of the housing 10, thereby effectively reducing noise.

[0037] Furthermore, in this embodiment, by providing the filter 20, the vibration of the air discharged from the discharge port 14 can be damped by the filter 20. This makes it possible to reduce noise leaking to the outside from the discharge port 14.

[0038] As described above, in this embodiment, the soundproofing structure for reducing noise from the side unit 2 (dust remover 1) is configured to include the partition 11, the air intake 13, the blower 30, and the sound-absorbing material 40. Such a soundproofing structure makes it possible to reduce noise without providing a separate room for soundproofing, and therefore it is possible to provide a dust remover 1 that is easily applicable to facilities such as hotels and shopping malls where it is difficult to provide an enclosed space (air shower room) for dust removal.

[0039] As described above, the dust removal device 1 according to this embodiment has the following features: A dust removal device (1) comprising a side unit (2) (dust removal unit) having an air intake (13) provided in a housing (10), an air discharge port (14) provided in the housing (10), and a blower (30) that discharges outside air drawn in through the air intake (13) from the air discharge port (14), The side unit 2 is provided with a soundproof structure for reducing noise. With this configuration, it is possible to reduce noise from the side unit 2 (dust removal device 1).

[0040] The soundproof structure is: a partitioning section (11) that partitions the internal space of the housing (10) into a first space (S1) on the intake port (13) side and a second space (S2) on the exhaust port (14) side; the air intake 13 formed on the other side (upper side) of the partition 11 different from the one side, in which the blower 30 that pressurizes and sends air from the first space S1 to the second space S2 is disposed; It is composed of the following. This configuration can reduce noise from the side unit 2 (dust removal device 1). That is, by ensuring a distance between the air intake 13 and the blower 30, it is possible to reduce noise from the blower 30 that leaks to the outside from the air intake 13.

[0041] The soundproof structure is: The air intake 13 is formed on the side opposite to the blower 30 across the partition 11 . This configuration effectively reduces noise from the side unit 2 (dust removal device 1). That is, it becomes easier to ensure the distance between the air intake 13 and the blower 30, and it is possible to effectively reduce noise from the blower 30 that leaks to the outside from the air intake 13.

[0042] The soundproof structure is: The sound absorbing material 40 is provided in the housing 10 . This configuration effectively reduces noise from the side unit 2 (dust remover 1). That is, by attenuating noise with the sound absorbing material 40, noise can be effectively reduced.

[0043] Although the dust remover 1 (side unit 2) according to the first embodiment has been described above, the present invention is not limited to the above-described embodiment. Below, modifications of the first embodiment (first to sixth modifications) will be described.

[0044] As in the side unit 2 according to the first modified example shown in Fig. 4(a), the air intakes 13 can be formed on the left and right sides of the partition 11 (at positions lower than in the example of Fig. 3), that is, at positions at the same height as the partition 11. Even in such a configuration, the length of the air flow path can be ensured, and noise can be reduced.

[0045] It is also possible to form one air intake port 13 above the partition 11, as in the side unit 2 according to a second modified example shown in Fig. 4(b). Even in this configuration, the length of the air flow path can be ensured, and noise can be reduced. Furthermore, the air flow path can be bent at the upper corner of the partition 11 so as to bypass the partition 11 from the air intake port 13, thereby effectively reducing noise.

[0046] 4(c), it is also possible to form the air intake 13 on the upper surface 10U of the housing 10. Even in this configuration, it is possible to ensure the length of the air flow path and reduce noise.

[0047] Furthermore, as in the side unit 2 according to a fourth modified example shown in FIG. 5(a), the air intake 13 can be formed in the upper part of the side surface of the housing 10 (in the illustrated example, the left side surface 10L). The fourth modified example shows an example in which the air intake 13 is formed above the partition 11. Even in this configuration, the length of the air flow path can be ensured, and noise can be reduced. Note that the illustrated example shows an example in which the air intake 13 is formed only on one side surface of the housing 10, but it is also possible to form the air intake 13 on both side surfaces of the housing 10 (the left side surface 10L and the right side surface 10R), for example.

[0048] 5(b), it is also possible to provide a guide section 50 that forms an air flow path from the air intake port 13 to the fan 30. The guide section 50 guides the air drawn into the housing 10 from the air intake port 13 formed in the left side surface 10L, so that the air flows between the right side surface 10R and the partition section 11 located on the opposite side, and then flows to the fan 30. In this way, by guiding the air drawn in from the air intake port 13 so that it bypasses the partition section 11 and flows to the fan 30, a long air flow path can be ensured, and noise can be attenuated.

[0049] In this way, the soundproof structure according to the fifth modification has the following features: It is configured to include a guide section 50 that guides the air flowing from the air intake 13 formed on the other side of the partition section 11 to the blower 30 so that it bypasses the partition section 11. With this configuration, it is possible to reduce noise from the side unit 2 (dust removal device 1).

[0050] Furthermore, as in the side unit 2 of the sixth modified example shown in Figure 5 (c), it is also possible to place the blower 30 above the partition section 11 and form the air intake 13 below the partition section 11.

[0051] Although the first embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0052] For example, the positional relationship between the blower 30 and the intake port 13 is not limited to the above example. That is, the positional relationship can be changed arbitrarily as long as a certain distance between the blower 30 and the intake port 13 can be secured.

[0053] For example, in this embodiment, the air intake 13 and the blower 30 are arranged on different sides (lower and upper sides in the example of FIG. 3 ) of the partition 11, respectively, to ensure a distance between the air intake 13 and the blower 30. The arrangement of the air intake 13 and the blower 30 with respect to the partition 11 can be changed as desired; for example, it is also possible to arrange the blower 30 on the left side of the partition 11 and the air intake 13 on the right side of the partition 11. Furthermore, if the partition 11 divides the internal space of the housing 10 into front and rear sections, the air intake 13 and the blower 30 can also be arranged on the front and rear of the partition 11.

[0053] Furthermore, in this embodiment, a soundproof structure that ensures a certain distance from intake port 13 to blower 30 has been exemplified, but the present invention is not limited to this, and a soundproof structure that ensures a certain distance from discharge port 14 to blower 30 is also possible. As a specific configuration in this case, the same configuration as in the case of intake port 13 described above can be adopted.

[0054] Furthermore, the position where the sound absorbing material 40 is provided and the member to which it is attached are not limited to the above example, and it can be provided at any position.

[0055] Furthermore, the shapes of the housing 10, partition 11, guide 12, etc. are not limited to the above examples and can be changed as desired. For example, the partition 11 can be formed into a circular shape when viewed from the front, or into a polygonal shape other than a rectangle. Furthermore, by abutting the left side surface of the partition 11 against the left side surface 10L of the housing 10, it is possible to form an air flow path as in a fifth modified example shown in FIG. 5(b).

[0056] Furthermore, the shape, number, arrangement, etc. of the intake port 13 and the discharge port 14 can be changed as desired.

[0057] Furthermore, in this embodiment, the distance between the intake port 13 and the blower 30 is ensured by the soundproof structure, but it is also possible to ensure the distance between the discharge port 14 and the blower 30, for example.

[0058] The dust remover 1 according to the second embodiment of the present invention will be described below.

[0059] The dust remover 1 according to the second embodiment shown in Figures 6 and 7 differs from the dust remover 1 according to the first embodiment (see Figure 1, etc.) in that the dust remover 1 according to the second embodiment includes a floor portion 4 in addition to a pair of side units 2 and a top surface portion 3. Therefore, the following description will mainly focus on the configuration of the floor portion 4 and related configurations.

[0060] The floor 4 is a member that forms the floor surface of the dust removal apparatus 1. The floor 4 is formed in a sloped shape with a bulging center to make it easier for people passing through the dust removal apparatus 1 to walk on. The floor 4 is provided between the pair of left and right side units 2, and is connected to the lower parts of each of the pair of side units 2. This makes it possible to lower the center of gravity of the entire dust removal apparatus 1, making it less likely for the dust removal apparatus 1 to tip over due to shaking such as an earthquake.

[0061] In the second embodiment, the soundproof structure for reducing noise from the side unit 2 (dust remover 1) is configured to include the floor portion 4. The configuration of the floor portion 4 will be specifically described below.

[0062] 7, in the side unit 2 according to the second embodiment, the air intake 13 is formed in the lower part of the housing 10 (front side surface 10F). The air intake 13 is formed at a position low enough to face the floor 4. A labyrinth structure 60 is formed inside the floor 4 to guide outside air to the air intake 13 of the side unit 2.

[0063] The labyrinth structure 60 is a structure that forms a curved air flow path. The labyrinth structure 60 mainly comprises an opening 61, a straight portion 62, and a serpentine portion 63. The opening 61 is formed so as to open on the side surface of the floor portion 4. The straight portion 62 is formed so as to extend linearly from the opening 61 toward the center of the front and rear of the floor portion 4. The serpentine portion 63 is formed so as to fold back from the end of the straight portion 62 (the end toward the center of the floor portion 4) to the outside of the front and rear of the floor portion 4, and is formed so as to serpentine left and right. The end of the serpentine portion 63 (the outer end of the floor portion 4) is connected to the air intake 13 of the side unit 2.

[0064] In this way, the labyrinth structure 60 is formed so as to bend at a plurality of locations. In this embodiment, a pair of left and right labyrinth structures 60 are formed so as to correspond to the pair of left and right side units 2. Although not shown in the figures, sound absorbing material (for example, sound absorbing material similar to the sound absorbing material 40 exemplified in the first embodiment) is appropriately provided on the wall surfaces of the labyrinth structure 60. Note that the labyrinth structure 60 shown in the figures is just one example, and the shape, number of bends, etc. of the labyrinth structure 60 can be changed as desired.

[0065] As described above, the soundproof structure according to the second embodiment has the following features: The air conditioner is configured to include a floor portion 4 (guide member) that is connected to the air intake 13 of the side unit 2 and has a labyrinth structure 60 that guides outside air to the air intake. This configuration can reduce noise from the side unit 2 (dust removal device 1). That is, by ensuring a distance between the opening 4b of the labyrinth structure 60 and the fan 30, it is possible to reduce noise from the fan 30 that leaks to the outside through the opening 4b.

[0066] The guide member is It constitutes the floor portion 4 of the dust removal device 1. With this configuration, noise can be reduced by utilizing the floor portion 4 of the dust remover 1. This allows the space inside the side unit 2 to be effectively utilized for purposes other than the soundproof structure, for example.

[0067] Although the second embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

[0068] For example, in the second embodiment, the floor 4 is exemplified as a guide member having the labyrinth structure 60, but the present invention is not limited to this, and a member other than the floor can also be used as the guide member. For example, the top surface 3 of the dust removal device 1 can be used as the guide member (a labyrinth structure can be formed on the top surface 3). Also, a separate guide member can be provided in addition to the top surface 3 or the floor 4.

[0069] It is also possible to combine the first and second embodiments, thereby achieving a more effective reduction in noise. [Explanation of symbols]

[0070] 1 Dust removal device 10. Cabinet 11 Compartment 12 Guide section 13 Air intake 14 Outlet 20 filters 30 Blower 40 Sound-absorbing material

Claims

1. A dust removal device comprising a dust removal unit having a hollow floor, an air intake provided in a housing separate from the floor, an air discharge port provided in the housing, and a blower that discharges outside air drawn in through the air intake port from the air discharge port, a soundproof structure for reducing noise from the dust removal unit; The soundproof structure is a guide member having a labyrinth structure connected to the air intake port of the dust removal unit and guiding outside air from an opening formed in a side surface of the floor portion to the air intake port, The guide member is A floor portion of the dust removal device is formed, The labyrinth structure is The floor portion is formed so as to extend from the opening to the intake port. Dust removal equipment.

2. The soundproof structure is a partition portion that partitions the internal space of the housing into a first space on the intake port side and a second space on the discharge port side; the intake port or the discharge port is formed on the other side of the partition portion different from the one side on which the blower that pressure-feeds air from the first space to the second space is disposed; comprising: The dust removal device according to claim 1.

3. The soundproof structure is The air intake port or the air discharge port is formed on the side opposite to the blower across the partition portion. The dust removal device according to claim 2.

4. The soundproof structure is a guide portion that guides air flowing from the intake port or the discharge port formed on the other side of the partition to the blower so as to bypass the partition, The dust removal device according to claim 2 or 3.

5. The soundproof structure is The housing is configured to include a sound-absorbing material provided therein. The dust removal device according to any one of claims 2 to 4.

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