JP2022019365A - Air curtain device - Google Patents

Abstract

To provide an air curtain device that can prevent users' feet from feeling chilled in a building.SOLUTION: An air curtain device 20 includes a first air outlet 33 installed to an entrance 12 that is open in a wall part 11 of a building 10 to blow air out therefrom. The first air outlet 33 is provided on a lower end side in at least one side edge part 14 of a pair of side edge parts 14 in the entrance 12 and configured to blow air out toward a side of the side edge part 14 positioned on the opposite side to the side edge part 14.SELECTED DRAWING: Figure 1

Description

The present invention relates to an air curtain device provided at an entrance / exit opening in a wall of a building.

Conventionally, as an air curtain device of this kind, for example, there is an air curtain device described in Patent Document 1. The air curtain device of Patent Document 1 is provided in a fan box having a built-in blower, and a blower that is provided at the end of the fan box and opens downward above the doorway that opens in the wall of the building. It has an exit.

In this air curtain device, an air curtain, which is a curtain-like air flow, is formed by blowing air downward from an air outlet. This air curtain suppresses the inflow of outside air into the inside of the building through the doorway.

Japanese Unexamined Patent Publication No. 5-288384

By the way, in the air curtain device described in Patent Document 1, air is blown downward from an air outlet provided at an upper part of an entrance / exit of a building. Therefore, on the lower end side of the entrance / exit, the flow of the air blown out from the outlet tends to be weak, and the outside air easily breaks through the air curtain and flows into the inside of the building. In particular, the air curtain is liable to be broken in a building where the ventilation volume is large and the internal pressure is negative, or in a building where the wind blows from the entrance / exit to the inside at all times.

As a result, in winter, cold outside air flows into the building from the lower end side of the doorway, causing a problem that the feet tend to get cold.
An object of the present invention is to provide an air curtain device capable of suppressing the feet from getting cold in a building.

The air curtain device for achieving the above object is an air curtain device provided at an entrance / exit of a wall portion of a building and provided with an outlet for blowing air, and the outlet is a pair of side edges of the entrance / exit. It is provided on the lower end side of at least one side edge portion, and is configured to blow air toward the side edge portion side opposite to the side edge portion.

According to the above configuration, air is blown out from the blowout portion provided on the lower end side of at least one side edge portion of the pair of side edge portions at the entrance / exit toward the side edge portion side opposite to the side edge portion. Will be done. As a result, the strong air immediately after being blown out from the blowout portion can act on the outside air that is about to flow into the inside of the building from the lower end side of the entrance / exit of the building, and the inflow of the outside air is suppressed.

In the air curtain device, it is preferable that the blowing portions are provided on both of the pair of side edge portions.
According to the above configuration, air is blown out from the blowing portions provided on both of the pair of side edge portions at the entrance / exit. Therefore, the flow of the air is less likely to be broken by the outside air as compared with the configuration in which the air is blown out only from the blowing portions provided on one of the pair of side edge portions. Further, in order to suppress the inflow of the outside air described above, it is possible to weaken the flow of the air blown out from each blowing portion.

In the air curtain device, when the blowing portion is used as the first blowing portion, it is preferable to provide a second blowing portion provided on the upper edge side of the entrance / exit and blowing air toward the inside and the upper side of the building. ..

According to the above configuration, air is blown out from the blowout portion provided on the upper edge side of the entrance / exit toward the inside and the upper side of the building. As a result, the outside air flowing into the inside of the building from the upper end side of the entrance / exit of the building is guided upward. Therefore, it becomes difficult for outside air to flow through the feet inside the building, and it is possible to further suppress the feet from getting cold inside the building.

In the air curtain device, it is preferable that the second blowing portion is configured to blow air toward the diagonally upper side.
According to the above configuration, air is blown from the blowout portion provided on the upper edge portion side of the entrance / exit toward the inside and diagonally upper side of the building. As a result, the outside air flowing into the inside of the building from the entrance / exit of the building is guided diagonally upward. Then, the air in the building is agitated by the air blown out from the second outlet and the outside air guided as described above, so that the warm air that tends to accumulate upward and the cold air that tends to accumulate downward in the building are mixed. Will be done. Therefore, it is possible to further suppress the cooling of the feet.

Further, the air curtain device for achieving the above object is an air curtain device provided at the entrance / exit of the wall portion of the building and provided with an outlet portion for blowing out air, and the outlet portion is on the upper edge side of the entrance / exit. It is provided in the building and is configured to blow air toward the inside and the upper side of the building.

According to the above configuration, air is blown out from the blowout portion provided on the upper edge side of the entrance / exit toward the inside and the upper side of the building. As a result, the outside air flowing into the inside of the building from the entrance / exit of the building is guided to the upper side. Therefore, it becomes difficult for outside air to flow through the feet inside the building.

According to the present invention, it is possible to prevent the feet from getting cold in the building.

The perspective view which shows one Embodiment of an air curtain apparatus. Sectional drawing along line 2-2 of FIG. FIG. 6 is a cross-sectional view taken along the line 3-3 of FIG. The cross-sectional view corresponding to FIG. 2 in the modification example of the 1st blower. The cross-sectional view corresponding to FIG. 3 in the modification example of the 2nd blower. The perspective view which shows the air curtain device of the modification example. The perspective view which shows the air curtain device of another modification example. The perspective view which shows the air curtain device of another modification example. The perspective view which shows the air curtain device of another modification example.

Hereinafter, an embodiment of the air curtain device will be described with reference to FIGS. 1 to 3.
As shown in FIG. 1, a wall portion 11 for partitioning the inside and the outside of the building 10 is provided between the floor surface and the ceiling surface of the building 10. The building 10 of this embodiment is a factory.

The wall portion 11 is opened with an entrance / exit 12 having a size that allows people, trolleys, and the like to enter and exit. The doorway 12 of the present embodiment has a rectangular shape when viewed from the front.
Hereinafter, the width direction, the depth direction, and the height direction of the entrance / exit 12 will be described simply as the width direction X, the depth direction Y, and the height direction Z, respectively.

Further, in the width direction X, the side approaching the central portion of the doorway 12 and the side away from the central portion may be described as the inside and the outside of the width direction X, respectively.
Further, the side approaching the central portion of the building 10 and the side away from the central portion in the depth direction Y may be simply described as the inside and the outside of the depth direction Y, respectively.

The edge portion of the doorway 12 connects the lower edge portion 13, the pair of side edge portions 14 extending from both ends of the lower edge portion 13 in the width direction X along the height direction Z, and the upper ends of the side edge portions 14. It has an upper edge portion 15. The lower edge portion 13 is located on the same plane as the floor surface of the building 10. The upper edge portion 15 is located below the ceiling surface of the building.

The air curtain device 20 includes a pair of first blowers 30 and a pair of second blowers 40.
First, the first blower 30 will be described.

As shown in FIGS. 1 and 2, the pair of first blowers 30 are provided on both lower end sides of the pair of side edge portions 14 of the inlet / outlet 12, and include a first blowout portion 33 for blowing air. The first blowing portion 33 is configured to blow air toward the side edge portion 14 on the side opposite to the side edge portion 14 on which the first blowing portion 33 is provided.

The first blower 30 includes a long first casing 31 that is long in the height direction Z. The first casing 31 has a first suction portion 32 for sucking air and a first blowing portion 33 for blowing air.

The first suction portion 32 opens toward the inside in the depth direction Y and extends along the height direction Z.
The first blowing portion 33 opens inward in the width direction X and extends along the height direction Z.

Inside the first casing 31, an electric first fan 34 is provided. The first fan 34 is a cross flow fan that rotates about an axis C1 extending along the height direction Z.
Inside the first casing 31, a first louver 35 that regulates the blowing direction of air from the first blowing portion 33 is provided.

Each first blower 30 is arranged adjacent to the inside of the depth direction Y with respect to the portion of the wall portion 11 outside the entrance / exit 12 in the width direction X.
Next, the second blower 40 will be described.

As shown in FIGS. 1 and 3, the pair of second blowers 40 are provided on the upper edge portion 15 side of the inlet / outlet 12, and include a second blowout portion 43 that blows out air. The pair of second blowers 40 are arranged side by side in the width direction X. The second blowing portion 43 is configured to blow air toward the inside of the depth direction Y, that is, the inside of the building 10 and the diagonally upper side.

The second blower 40 includes a long second casing 41 that is long in the width direction X. The second casing 41 has a second suction portion 42 for sucking in air and a second blowing portion 43 for blowing out air.

The second suction portion 42 opens downward and extends along the width direction X.
The second blowing portion 43 opens toward the inside in the depth direction Y and extends along the width direction X.

Inside the second casing 41, an electric second fan 44 is provided. The second fan 44 is a cross-flow fan that rotates about an axis C2 extending along the width direction X.
Inside the second casing 41, a second louver 45 that regulates the blowing direction of air from the second blowing portion 43 is provided. The second louver 45 is a long plate extending along the width direction X. The second louver 45 is arranged so as to be inclined so as to be located on the upper side toward the inner side in the depth direction Y.

Each of the second blowers 40 is arranged adjacent to the inside of the depth direction Y with respect to the portion of the wall portion 11 above the entrance / exit 12.
Next, the action and effect of this embodiment will be described.

(1) From the first blowout portion 33 provided on the lower end side of at least one side edge portion 14 of the pair of side edge portions 14 at the entrance / exit 12, to the side edge portion 14 on the side opposite to the side edge portion 14. Air is blown toward. As a result, the strong air immediately after being blown out from the first blowing portion 33 can act on the outside air that is about to flow into the inside of the building 10 from the lower end side of the entrance / exit 12 of the building 10. The inflow is suppressed. Therefore, it is possible to prevent the feet from getting cold in the building 10.

(2) Air is blown out from the first blowing portion 33 provided on both of the pair of side edge portions 14 at the entrance / exit 12. Therefore, the flow of the air is less likely to be broken by the outside air as compared with the configuration in which the air is blown out only from the first blowing portion 33 provided on one of the pair of side edge portions 14. Further, in order to suppress the inflow of the outside air described above, it is possible to weaken the flow of the air blown out from each first blowing portion 33.

(3) Air is blown from the second blowing portion 43 provided on the upper edge portion 15 side of the entrance / exit 12 toward the inside and the upper side of the building 10. As a result, the outside air flowing into the inside of the building 10 from the upper end side of the doorway 12 of the building 10 is guided upward. Therefore, it becomes difficult for outside air to flow through the feet in the building 10, and it is possible to further suppress the feet from getting cold in the building 10.

(4) Air is blown from the second blowing portion 43 provided on the upper edge portion 15 side of the entrance / exit 12 toward the inside and diagonally upper side of the building 10. As a result, the outside air flowing into the inside of the building 10 from the upper end side of the doorway 12 of the building 10 is guided diagonally upward. Then, the air in the building 10 is agitated by the air blown out from the second blowing portion 43 and the outside air guided as described above, so that the warm air that tends to accumulate in the upper part and the cold air that tends to accumulate in the lower part in the building 10 are agitated. And will be mixed. Therefore, it is possible to further suppress the cooling of the feet.

<Change example>
The above embodiment may be modified and implemented as follows, for example. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

The first fan 34 of the first blower 30 is not limited to the transverse fan, but may be an axial fan, a centrifugal fan, or the like.
-As shown in FIG. 4, the pair of first suction portions 32 may open toward the outside in the width direction X. Further, only one of the first suction portions 32 may be opened toward the outside in the width direction X.

One of the first blowing portions 33 and the other may be arranged so as to be offset from each other in the depth direction Y and the height direction Z.
The second blowing portion 43 may be configured to blow air toward the inside and the upper side of the building 10. For example, as shown in FIG. 5, one or both second blowing portions 43 may be configured to blow air upward along the height direction Z.

-As shown in FIG. 6, the first blowing portion 33 may be provided on only one of the pair of side edge portions 14. In this case, in order to suppress the inflow of outside air, it is desirable to set the strength of the air flow blown out from the first blowing portion 33 to be stronger than that of the above embodiment. Further, in this case, as shown in FIG. 8, the support 50 may be provided on the lower end side of the side edge portion 14 in which the first blowout portion 33 is not provided among the pair of side edge portions 14. The countersunk 50 has a rectangular plate shape along both the depth direction Y and the height direction Z, and extends from the side edge portion 14 toward the inside of the depth direction Y. It is preferable that the support 50 is provided in a range including the entire first blowing portion 33 in the height direction Z.

According to such a configuration, the flow of the air blown out from the first blowing portion 33 is blocked by the tsuitate 50. Therefore, when the flow of air blown out from the first blowing portion 33 is strong, it is possible to prevent the air from flowing into the building 10.

The first blower 30 may be arranged adjacent to the outside of the wall portion 11 in the depth direction Y. In this case, for example, as shown in FIG. 9, a pair of first blowers 30 are adjacent to each other on the inside and outside of the depth direction Y with respect to the portion of the wall portion 11 outside the entrance / exit 12 in the width direction X. It can also be placed.

The second blower 40 may be arranged adjacent to the outside of the wall portion 11 in the depth direction Y. In this case, the second outlet 43 may be arranged below the upper edge 15 of the doorway 12.

-In the above-described embodiment and modification, one or both of the pair of second blowers 40 may be omitted.
-At least the first blowing portion 33 may be provided on the lower end side of the side edge portion 14 of the entrance / exit 12, and the entire first blower 30 does not need to be provided on the lower end side of the side edge portion 14.

-At least the second blowing portion 43 may be provided on the upper edge portion 15 side of the entrance / exit 12, and the entire second blower 40 does not need to be provided on the upper edge portion 15 side.
-As shown in FIG. 7, it is also possible to omit the first blower 30 and configure the air curtain device 20 only by the second blower 40. Even in this case, the building is blown from the doorway 12 of the building 10 by blowing air toward the inside and the upper side of the building 10 from the second blowout portion 43 provided on the upper edge portion 15 side of the doorway 12. The outside air flowing into the inside of the 10 is guided to the upper side. Therefore, it becomes difficult for outside air to flow through the feet in the building 10, and it is possible to prevent the feet from getting cold in the building 10.

In this case, in particular, as in the above embodiment, if the air is blown out from the second blowing portion 43 toward the inside and diagonally upper side of the building 10, the air is blown out from the second blowing portion 43. The air inside the building 10 is agitated by the generated air and the outside air guided as described above, so that the warm air that tends to accumulate upward and the cold air that tends to accumulate downward in the building 10 are mixed. become. Therefore, it is possible to further suppress the cooling of the feet.

10 ... Building 11 ... Wall 12 ... Doorway 13 ... Lower edge 14 ... Side edge 15 ... Upper edge 20 ... Air curtain device 30 ... 1st blower 31 ... 1st casing 32 ... 1st suction part 33 ... 1st Blow-out part 34 ... 1st fan 35 ... 1st louver 40 ... 2nd blower 41 ... 2nd casing 42 ... 2nd suction part 43 ... 2nd blow-out part 44 ... 2nd fan 45 ... 2nd louver 50 ... Tsuitate

Claims (5)

It is an air curtain device provided at the entrance / exit that opens in the wall of a building and has an air outlet that blows out air.
The outlet is provided on the lower end side of at least one side edge of the pair of side edges at the inlet / outlet, and is configured to blow air toward the side edge opposite to the side edge. ing,
Air curtain device. The outlet is provided on both sides of the pair of side edges.
The air curtain device according to claim 1. When the blowout portion is used as the first blowout portion,
It is provided on the upper edge side of the entrance and exit, and includes a second blowing portion that blows air toward the inside and the upper side of the building.
The air curtain device according to claim 1 or 2. The second blowing portion is configured to blow air diagonally upward.
The air curtain device according to claim 3. It is an air curtain device provided at the entrance / exit that opens in the wall of a building and has an air outlet that blows out air.
The outlet is provided on the upper edge side of the entrance and exit, and is configured to blow air toward the inside and the upper side of the building.
Air curtain device.

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