JP2014043683A - Positive pressure shelter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a positive pressure shelter capable of preventing foreign substances from entering the inside of the shelter and keeping the inside sanitary.SOLUTION: A positive pressure shelter comprises: a shelter formed with a downside vent hole 16 through which outside air can pass; and a blower unit 20 which is installed in the shelter for blowing outside air into the shelter. The blower unit 20 includes: a blower 21 which blows outside air from the downside vent hole 16 into the shelter in such a manner that internal pressure of the shelter becomes higher than the outside; and a filter 22 which is provided outside of the downside vent hole 16 for removing foreign substances mixed in outside air passing through the downside vent hole 16.

Description

  The present invention relates to a positive pressure shelter in which the internal pressure is higher than the outside.

  In general, a shelter is a temporary office at a construction site, a wireless relay communication device such as a digital terrestrial relay or a mobile phone, or a building (also referred to as a container) that stores electrical equipment such as an environmental observation device or a heating / cooling device. Used). This type of shelter is assembled by standing a wall surface panel on a base member serving as a flooring and dropping a ceiling into the wall surface panel (see, for example, Patent Document 1).

JP-A-7-324498

  By the way, in recent years, in order to keep the inside of the shelter hygienic (for example, to make it difficult for electrical equipment housed in the shelter to fail), to prevent foreign matter such as dust and dirt from entering the shelter as much as possible. Is required.

  However, in the above-described conventional shelter, there is a possibility that foreign matter may enter from the gap between the base member and the wall panel or the gap between the wall panel and the ceiling, and a technique for preventing the entry of foreign matter has not been developed yet. is the current situation.

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a positive pressure shelter that can prevent the entry of foreign matter into the inside and can keep the inside hygienic.

  In order to solve the above-described problems, the present invention has the following features. First, the first feature of the present invention includes: a shelter in which a vent hole through which external air can pass is formed; and a blower unit that is installed in the shelter and blows the external air into the shelter. The unit includes a blower that blows the external air from the vent in the shelter so that an internal pressure of the shelter is higher than the outside, and the external that is provided outside the vent and passes through the vent The gist is to include a filter that removes foreign matter mixed in the air.

  According to this feature, even if foreign matter such as dust or dust is mixed in the external air passing through the vent by providing a filter that removes foreign matter mixed in the external air passing through the vent, Intrusion of foreign matter into the shelter can be prevented. For this reason, the inside of a shelter can be kept hygienically and it is possible to make it difficult to cause a failure (for example, a failure due to a short circuit or the like) of an electrical device accommodated in the shelter.

  In addition, by providing a blower that blows external air so that the internal pressure of the shelter is higher than the outside, foreign matter enters from the gap between the base member and the wall panel or the gap between the wall panel and the ceiling. Because it becomes difficult, the inside of the shelter can be kept more hygienic.

  As another aspect of the present invention, the air blowing unit may further include a filter regeneration unit that removes the foreign matter attached to the filter and regenerates the filter.

  According to this feature, by providing the filter regeneration unit that regenerates the filter, it is possible to remove the foreign matter adhering to the filter and to reduce the replacement cost of the filter.

  As another feature of the present invention, the shelter is formed with a discharge port through which the internal air in the shelter is discharged, and the discharge port can discharge the internal air and the external air. The gist is that a check valve is provided to prevent entry.

  According to this feature, since the check valve is provided at the discharge port, foreign matter can be reliably prevented from entering the shelter, so that the inside of the shelter can be kept more hygienic.

  As another feature of the present invention, the blower unit may further include a control unit that activates the filter regeneration unit, and the control unit may drive the filter regeneration unit every predetermined time.

  According to this feature, since the foreign substance adhering to the filter can be automatically removed by driving the filter regeneration unit every predetermined time, the filter replacement cost is further reduced.

  As another feature of the present invention, the blower unit further includes a control unit that activates the filter regeneration unit, and an abnormality detection unit that detects an abnormality of the filter, and the control unit has an abnormality in the abnormality detection unit. The filter regeneration unit may be driven when the signal is detected.

  According to this feature, the control unit can automatically remove foreign matter when the filter is contaminated by driving the filter regeneration unit when the abnormality detection unit detects an abnormality, thereby further reducing the filter replacement cost. To do.

  According to the features of the present invention, it is possible to provide a positive pressure shelter that can prevent foreign matter from entering the inside and keep the inside hygienic.

FIG. 1 is a schematic perspective view showing a positive pressure shelter according to the embodiment. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is an enlarged perspective view of a portion B in FIG. 4A is a diagram showing a normal state according to the embodiment (C-C cross-sectional view of FIG. 1), and FIG. 4B is a diagram showing a filter regeneration state according to the embodiment (FIG. 1). CC sectional view). FIG. 5 is a perspective view showing a blower unit according to the first modification. FIG. 6 is a schematic perspective view showing a positive pressure shelter according to the second modification. FIG. 7A is a diagram (a cross-sectional view taken along DD in FIG. 6) showing a normal state according to the second modification, and FIG. 7B is a diagram showing a filter regeneration state according to the second modification (FIG. 7). 6 is a sectional view taken along line DD of FIG. FIG. 8 is a cross-sectional view (part corresponding to the DD cross-sectional view of FIG. 6) showing a part of the positive pressure shelter according to the second modification.

  Next, an embodiment of a positive pressure shelter according to the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(Configuration of positive pressure shelter)
First, the configuration of the positive pressure shelter 1 according to the present embodiment will be described with reference to the drawings. FIG. 1 is a schematic perspective view showing a positive pressure shelter 1 according to the present embodiment. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is an enlarged perspective view of a portion B in FIG. 4 (a) and 4 (b) are CC cross-sectional views of FIG.

  As shown in FIGS. 1 to 4, the positive pressure shelter 1 is a temporary office at a construction site, a wireless relay communication device such as a digital terrestrial relay and a mobile phone, or an electrical device such as an environmental observation device and a heating / cooling device. It is used for buildings to be stored (sometimes referred to as containers), so that the internal pressure is higher than the outside. The positive pressure shelter 1 includes a substantially box-shaped shelter 10 that houses electrical equipment (not shown), and a blower unit 20 that is installed in the shelter 10 and blows external air into the shelter 10.

  The shelter 10 has a plurality of wall panels 12 (a front panel 12A, a back panel 12B, and side panels 12C and 12D) erected on a base member 11 serving as a flooring, and a ceiling 14 after a door 13 and the like are attached to the front panel 12A. Assembled by dropping.

  The shelter 10 is formed with an upper vent 15 provided on the ceiling 14 side and a lower vent 16 provided on the base member 11 (floor side). External air and internal air can pass through the upper vent 15 and the lower vent 16.

  As shown in FIG. 2, the upper vent 15 is formed between the front panel 12 </ b> A (the wall surface panel 12 on which the door 13 is formed) located on the front side of the shelter 10 and the ceiling 14. As shown in FIGS. 1 and 3, the lower vent 16 is provided at the corner of the base member 11, and the corner 17 of the base member 11 has a rotating door 17 to which a rotation handle 17 </ b> A is attached. A plurality of lower vents 16 are formed in the rotating door 17. An air flow path 18 (see FIG. 4) through which external air and internal air pass is provided below the lower vent 16 (under the floor).

  The blower unit 20 makes the internal pressure of the shelter 10 higher than the outside. The blower unit 20 includes a blower 21, a filter 22, a filter regeneration unit 23, and a control device 24 (control unit).

  The blower 21 is disposed in the air flow path 18 (see FIG. 4) below the lower vent 16. The blower 21 blows external air from the lower vent 16 into the shelter 10 in a state where the internal pressure of the shelter 10 is higher than the outside (hereinafter, normal state). Alternatively, the blower 21 blows the internal air in the shelter 10 from the lower vent 16 toward the filter 22 in a state where the filter 22 is regenerated (hereinafter referred to as a filter regeneration state). The blower 21 includes a motor 21A connected to the control device 24 and a fan 21B that rotates about a rotating shaft 21C (see FIG. 4) of the motor 21A.

  The filter 22 is disposed in the air flow path 18 (see FIG. 4) below the lower vent 16 (outside the shelter 10) and below the blower 21. The filter 22 is attached to a window portion 27A (see FIG. 3) of the attachment frame 27. The filter 22 removes foreign matters (dust, dust, etc.) mixed in the external air passing through the lower vent 16, that is, prevents foreign matters from entering from the lower vent 16.

  The filter regeneration unit 23 is connected to the control device 24 and attached to the attachment frame 27. The filter regeneration unit 23 regenerates the filter 22 by removing foreign matters attached to the filter 22. The filter regeneration unit 23 is driven in the filter regeneration state. In this embodiment, the filter regeneration unit 23 is configured by a vibration device that mechanically vibrates the mounting frame 27.

  The control device 24 is connected to the power source 28, the motor 21A, and the filter regeneration unit 23 (see FIG. 3). The control device 24 controls the rotation of the motor 21 </ b> A (the rotational speed and direction of the fan 21 </ b> B) and the vibration of the filter regeneration unit 23. The control device 24 activates the filter regeneration unit 23 every predetermined time (for example, 24 hours).

(Blower unit operation)
Next, operation | movement of the ventilation unit 20 mentioned above is demonstrated, referring FIG. As described above, the operation of the blower unit 20 includes a state where the internal pressure of the shelter 10 is higher than the outside (normal state) and a state where the filter 22 is regenerated (filter regeneration state).

(Normal state)
The normal state is always performed when not in the filter regeneration state. In this normal state, as shown in FIG. 4A, the control device 24 controls the blower 21 so as to blow external air into the shelter 10 from the lower vent 16. That is, the rotation shaft (fan 21B) of the motor 21A rotates in the direction in which the external air is blown from the lower vent 16 into the shelter 10.

  At this time, the internal pressure of the shelter 10 is higher than the outside. For example, the internal air discharged from the upper vent 15 is less than the external air blown from the lower vent 16.

(Filter regeneration status)
The filter regeneration state is performed every predetermined time (for example, 24 hours). In this filter regeneration state, as shown in FIG. 4B, the control device 24 controls the blower 21 so as to exhaust the internal air in the shelter 10 from the lower vent 16 and in that state the filter regeneration unit The attachment frame 27 to which 23 is attached is vibrated. As a result, the foreign matter attached to the filter 22 falls, and the foreign matter is removed from the filter 22 to be regenerated.

(Action / Effect)
In the present embodiment described above, the filter 22 that removes foreign matter mixed in the external air that passes through the lower vent 16 is provided, so that the external air that passes through the lower vent 16 has dust, dirt, and the like. Even when foreign matter is mixed, entry of foreign matter into the shelter 10 can be prevented. For this reason, the inside of the shelter can be kept hygienic, and it is possible to make it difficult to cause a failure (for example, a failure due to a short circuit or the like) of the electrical equipment accommodated in the shelter 10.

  In addition, by providing a blower 21 that blows external air so that the internal pressure of the shelter 10 is higher than the outside, a gap between the base member 11 and the wall surface panel 12, or between the wall panel 12 and the ceiling 14. Since it becomes difficult for foreign matter to enter from the gap, the inside of the shelter 10 can be kept more hygienic.

  In the present embodiment, by providing the filter regeneration unit 23 that regenerates the filter 22, it is possible to remove foreign matters attached to the filter 22 and to reduce the replacement cost of the filter 22.

  In this embodiment, since the foreign material adhering to the filter 22 can be automatically removed when the control device 24 drives the filter regeneration unit 23 every predetermined time, the replacement cost of the filter 22 is further reduced.

  In the present embodiment, the blower 21 is disposed on the lower side of the lower vent 16, so that the shelter 10 is compared with the case where the blower 21 is disposed in the shelter 10 such as the upper side of the lower vent 16. The space inside can be secured.

(Example of change)
Next, a modified example of the positive pressure shelter 1 according to the above-described embodiment will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same part as the positive pressure shelter 1 which concerns on embodiment mentioned above, and a different part is mainly demonstrated.

(Modification 1)
First, the configuration of the blower unit 20 in the positive pressure shelter 1 according to the modified example 1 will be described with reference to the drawings. FIG. 5 is a perspective view (a diagram corresponding to FIG. 3) illustrating the blower unit 20 according to the first modification.

  In the first modification, the cycle in which the filter regeneration state is performed is different, and the filter regeneration state is performed when the filter 22 is contaminated. Specifically, as shown in FIG. 5, the blower unit 20 includes an abnormality detection unit 25 in addition to the blower 21, the filter 22, the filter regeneration unit 23, and the control device 24 (control unit).

  The abnormality detection unit 25 detects an abnormality such as the degree of contamination of the filter 22. The abnormality detection unit 25 is configured by a sensor that detects the amount of external air passing through the filter 22, a sensor that monitors the surface of the filter 22, and the like.

  In the filter regeneration state, the control device 24 controls the blower 21 so that the internal air in the shelter 10 is discharged from the lower vent 16 when the abnormality detection unit 25 detects an abnormality. The attachment frame 27 to which the filter regeneration unit 23 is attached is vibrated.

  In the modified example 1 described above, intrusion of foreign matter into the shelter 10 can be prevented and the inside of the shelter 10 can be kept more hygienic as in the above-described embodiment. In addition, the control device 24 automatically drives the filter 22 when it is contaminated without wastefully regenerating the filter 22 by driving the filter regeneration unit 23 when the abnormality detection unit 25 detects an abnormality. Since the foreign matter can be removed, the replacement cost of the filter 22 is further reduced.

(Modification 2)
Next, the structure of the positive pressure shelter 1 which concerns on the modification 2 is demonstrated, referring drawings. FIG. 6 is a schematic perspective view showing the positive pressure shelter 1 according to the second modification. 7 and 8 are DD cross-sectional views of FIG.

  In the second modification, the configuration of the upper vent 15 is different. Specifically, as shown in FIGS. 6 and 7, the upper vent 15 includes an inside air discharge passage 150 (discharge port) provided between the front panel 12 </ b> A and the ceiling 14, and a door 13 of the front panel 12 </ b> A. The outside air intake passage 250 is provided on the upper side.

  The inside air discharge passage 150 has an inner port 151 that opens into the shelter 10 and an outer port 152 that communicates with the inner port 151 and opens to the outside.

  The inner port 151 is provided with a check valve 153 made of thin-walled (for example, 0.05 mm) aluminum foil or stainless steel foil, and an inner fixed panel 154 fixed to the front panel 12A or the ceiling 14. Yes.

  The check valve 153 has one end (right side in FIG. 7) fixed to the inner fixed panel 154 and the other end (left side in FIG. 7) freely movable. The inner fixed panel 154 is disposed below the check valve 153 and supports the check valve 153. The inner fixed panel 154 has an inner air passage hole 154A through which the internal air passes. The inner inside air passage hole 154A only needs to be formed in a circular shape, an elliptical shape, a long hole shape, or the like, and can be set in various shapes.

  The outer opening 152 is provided with an outer fixing panel 155 that is fixed to the front panel 12 </ b> A and the ceiling 14. The outer fixed panel 155 is formed with an outer inner air passage hole 155A through which the internal air passes. The outer inside air passage hole 155A may be formed in a circular shape, an oval shape, a long hole shape, or the like, like the inner inside air passage hole 154A, and can be set in various shapes.

  The outside air intake passage 250 is formed in the front panel 12A, and communicates the inside of the shelter 10 with the outside. A frame member 251 is attached around the outside air intake passage 250. A fixed panel 252 is provided on the outer side of the frame member 251. The fixed panel 252 is formed with an outside air passage hole 252A through which external air passes. The outside air passage hole 252A only needs to be formed in a circular shape, an elliptical shape, a long hole shape, or the like, and can be set in various shapes.

  In the outside air intake passage 250, a check valve 253 made of a thin-walled aluminum foil (for example, 0.05 mm in thickness) or stainless steel foil, and a filter 254 provided outside the check valve 253 are provided. ing.

  One end (upper side in FIG. 7) of the check valve 253 is fixed to the inner fixed panel 154, and the other end (lower side in FIG. 7) is freely movable. The filter 254 is attached to the frame member 251. The filter 254 removes foreign matters (dust, dust, etc.) mixed in the external air passing through the outside air passage hole 252A, that is, prevents foreign matters from entering from the outside air intake passage 250.

  In such a normal state of the positive pressure shelter 1, as shown in FIG. 7A, external air is blown into the shelter 10 from the lower vent 16 so that the internal pressure of the shelter 10 becomes higher than the outside. Accordingly, one end of the check valve 153 of the inside air discharge passage 150 is lifted by the inside air. The internal air passes through the inside air discharge passage 150 from the inside inside air passage hole 154A toward the outside inside air passage hole 155A and is discharged to the outside. At this time, since the check valve 253 of the outside air intake passage 250 is pressed toward the filter 254 side by the internal air, the inside air is not discharged from the outside air intake passage 250.

  On the other hand, in the filter regeneration state of the positive pressure shelter 1, as shown in FIG. 7B, the internal air in the shelter 10 is discharged from the lower vent 16, and the outside air intake passage 250 is then discharged by the external air. One end of the check valve 253 is lifted. Then, the outside air is sucked into the shelter 10 from the outside air passage hole 252A through the outside air intake passage 250. At this time, the check valve 153 of the inside air discharge passage 150 is pressed toward the inner fixed panel 154 by the outside air, so that the outside air is not sucked from the inside air discharge passage 150.

  In the modified example 2 described above, the internal air can be discharged to the outside using the inside air discharge passage 150 in the normal state, and the outside air can be sucked into the shelter 10 using the outside air intake passage 250 in the filter regeneration state. In this filter regeneration state, external air is sucked into the shelter 10, but foreign matter can be prevented from entering the shelter 10 by the filter 254, and the inside of the shelter 10 can be kept more hygienic.

  Here, in the second modification, it has been described that the check valve 153 and the inner fixing panel 154 are provided in the inner port 151 of the inside air discharge passage 150, but the present invention is not limited to this. For example, as shown in FIG. 8, the inner fixing panel 154 may not be provided. In this case, the check valve 153 has one end (right side in FIG. 8) fixed to the ceiling 14 and the other end (left side in FIG. 8) freely movable on the upper side of the front panel 12A. Note that the outer fixing panel 155 may not be provided for the outer opening 152 of the inside air discharge passage 150.

(Other embodiments)
Although the contents of the present invention have been disclosed through the embodiments of the present invention as described above, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the embodiment of the present invention can be modified as follows. Specifically, the door 13 has been described as being attached to the front panel 12 </ b> A before the ceiling 14 is dropped onto the wall panel 12, but is not limited thereto, and the ceiling 14 is dropped onto the wall panel 12. After being inserted, it may be attached to the front panel 12A.

  The blower unit 20 does not necessarily need to include all of the blower 21, the filter 22, the filter regeneration unit 23, the control device 24, and the abnormality detection unit 25, and may be any unit provided with the blower 21 and the filter 22.

  Moreover, although the upper side vent hole 15 and the lower side vent hole 16 were demonstrated as what is provided in the ceiling 14 side and the base member 11, it is not limited to this, You may be provided in the wall surface panel 12. FIG. In this case, the air blowing unit 20 does not need to be provided below the base member 11 (under the floor), and may be provided outside the member (for example, the wall surface panel 12) in which the lower vent 16 is formed. Good.

  Further, the blower unit 20 does not need to be provided below the base member 11 or outside the wall panel 12, and may be provided inside the base member 11 or inside the wall panel 12.

  In addition, the blower 21 has been described as being disposed below the lower vent 16, but is not limited thereto, and is provided above the lower vent 16 (inside the shelter 10). May be.

  The filter 22 may be any function that can remove foreign substances, and can be set in various types and structures. Similarly, the check valve 153 and the check valve 253 are not necessarily formed of a thin aluminum foil or stainless steel foil, and may be formed of other plate-like bodies (for example, rubber materials).

  Moreover, although the filter regeneration part 23 demonstrated as what is comprised by the vibration apparatus which vibrates the filter 22 mechanically, it is not limited to this, The structure which wash | cleans the filter 22 may be sufficient. Any configuration can be used as long as 22 can be reproduced.

  In addition, a foreign matter receiving unit that receives foreign matter dropped from the filter 22 by the filter regeneration unit 23 may be provided below the filter 22. Furthermore, a sensor or the like may be provided for notifying an operator when the amount of foreign matter received by the foreign matter receiving portion exceeds a predetermined value. In this case, foreign matter can be prevented from accumulating under the filter 22 (under the floor).

  Further, the power supply source of the power supply 28 to which the control device 24 is connected may be a commercial power supply, or natural energy (for example, solar power generation, geothermal power generation, wind piezoelectric power generation, hydroelectric power generation) or the like. Also good.

  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 ... Positive pressure shelter 10 ... Shelter 11 ... Base member 12 ... Wall panel 12A ... Front panel 12B ... Rear panel 12C, 12D ... Side panel 13 ... Door 14 ... Ceiling 15 ... Upper vent 16 ... Lower vent 17 ... Times Moving door 18 ... Air flow path 20 ... Blower unit 21 ... Blower 22 ... Filter 23 ... Filter regeneration unit 24 ... Control device (control unit)
25 ... Abnormality detection unit 150 ... Inside air discharge passage (discharge port)
151 ... Inner port 152 ... Outer port 153 ... Movable door portion 153 ... Check valve 154 ... Inner fixed panel 154A ... Inner inside air passage hole 155 ... Outer fixed panel 155A ... Outer inside air passage hole 250 ... Outside air intake passage 251 ... Frame member 252 ... fixed panel 252A ... outside air passage hole 253 ... movable door 253 ... check valve 254 ... filter

Claims (5)

A shelter in which a vent hole through which external air can pass is formed, and a blower unit that is installed in the shelter and blows the external air into the shelter,
The air blowing unit is
A blower that blows the external air from the vent into the shelter so that the internal pressure of the shelter is higher than the outside;
A positive pressure shelter comprising: a filter provided on the outside of the vent and removing foreign matter mixed in the external air passing through the vent. The positive pressure shelter according to claim 1,
The positive pressure shelter, wherein the blower unit further includes a filter regeneration unit that removes the foreign matter attached to the filter and regenerates the filter. The positive pressure shelter according to claim 1 or 2,
The shelter is formed with a discharge port through which the internal air in the shelter is discharged,
A positive pressure shelter characterized in that the exhaust port is provided with a check valve capable of discharging the internal air and preventing the external air from entering. The positive pressure shelter according to any one of claims 1 to 3,
The blower unit further includes a control unit that activates the filter regeneration unit,
The said control part drives the said filter reproduction | regeneration part for every predetermined time, The positive pressure shelter characterized by the above-mentioned. The positive pressure shelter according to any one of claims 1 to 3,
The blower unit further includes a control unit that activates the filter regeneration unit, and an abnormality detection unit that detects an abnormality of the filter,
The said control part drives the said filter reproduction | regeneration part, when the said abnormality detection part detects abnormality, The positive pressure shelter characterized by the above-mentioned.

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