Ventilation equipment and ventilation methods

Abstract

To provide a ventilation technique capable of facilitating maintenance and suppressing an effect caused by blast.SOLUTION: A ventilation device 1 for taking in outside air to an indoor side includes: a main flow passage 10 having an outdoor side opening part 100 and an indoor side opening part 101; an auxiliary flow passage 11 branched from the middle of the main flow passage 10 and having a branch part 111; an air current direction change plate 12 disposed in the main flow passage 10 and distributing part of an air current caused to flow into the outdoor side opening part 100 and having wind speed equal to or greater than a predetermined value to the auxiliary flow passage 11; and a resistor 13 disposed in the auxiliary flow passage 11 or the indoor side opening part 111 of the auxiliary flow passage 11 and restricting air quantity of a passing air current.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a ventilation technique for introducing outside air into a room.

Background Art

[0002] Conventionally, a ventilation device has been used in buildings such as high-rise buildings where ventilation by opening and closing windows is difficult. For example, Patent Document 1 discloses a ventilation device having a frame body including an indoor-side opening, an outdoor-side opening, and a ventilation space communicating between the indoor-side opening and the outdoor-side opening, and an air volume adjustment plate and a plurality of elastic bodies disposed in the ventilation space. Here, one end of the air volume adjustment plate serves as a rotation axis, and when the inflow air volume from the outdoor-side opening increases, it rotates in a direction to close the indoor-side opening. Further, the plurality of elastic bodies gradually suppress the rotation of the air volume adjustment plate in the direction to close the indoor-side opening.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the ventilation device described in Patent Document 1 has a structure in which the rotation of an air volume adjustment plate rotatably attached with one end as a rotation axis in the direction to close the indoor-side opening is gradually suppressed by a plurality of elastic bodies, that is, a structure having a movable part. Therefore, regular maintenance is required to maintain its performance. Further, when a gust of wind blows into the outdoor-side opening, the follow-up of the rotation of the air volume adjustment plate in the direction to close the indoor-side opening is delayed, and the wind speed of the airflow blowing out from the indoor-side opening instantaneously increases.

[0005] This invention has been made in view of the above circumstances, and its purpose is to provide a ventilation technology that is easy to maintain and can suppress the effects of gusts of wind. [Means for solving the problem]

[0006] To solve the above problems, the present invention provides a main flow path connecting the outdoors and indoors, and a secondary flow path that branches off from the main flow path and connects to the indoors. The main flow path is equipped with an airflow direction changing plate that distributes a portion of the airflow with a wind speed of a predetermined value or higher to the secondary flow path, and the secondary flow path is equipped with a resistor that limits the amount of airflow passing through it. Here, the resistor can be made of a porous material with good breathability, a mesh structure, a nonwoven fabric (for example, an air filter), or the like.

[0007] For example, the present invention is A ventilation device for bringing outside air into the room, Exterior opening and First The main flow path connects the openings on the interior side, In the middle of the main flow channel A branch section which is an opening provided therein and a second opening provided separately from the first indoor opening Interior opening of Link and separated from the main flow path by a wall. Subchannel and Within the main flow channel The wall surface opposite to the wall surface on which the aforementioned branching portion is provided. A flow direction changing plate is provided which distributes a portion of the airflow with a wind speed of a predetermined value or higher that flows into the outdoor opening to the sub-flow channel. In the aforementioned subchannel or 2nd The device comprises a resistor positioned at the indoor opening and limiting the airflow rate of the air passing through it. 、 The aforementioned airflow direction changing plate is The plane is concave in shape relative to the upstream side of the main channel, or is positioned at an angle that guides the airflow of the main channel into the secondary channel. . [Effects of the Invention]

[0008] In this invention, of the airflow flowing into the outdoor opening of the main channel, a portion of the airflow with a wind speed above a predetermined value is distributed to a secondary channel by an airflow direction changing plate, while the airflow with a wind speed below the predetermined value passes through the main channel and is supplied to the room. Furthermore, the airflow with a wind speed above the predetermined value that is guided to the secondary channel is supplied to the room with its airflow rate limited by a resistor. Thus, according to this invention, the wind force of the airflow taken into the room can be adjusted without using any movable parts, so the possibility of malfunction during use is low and maintenance is easy. In addition, even if a gust of wind blows into the main channel, it can respond instantaneously and suppress an instantaneous increase in the wind force of the airflow taken into the room. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1(A) is a schematic front view of a window structure to which a ventilation device 1 according to one embodiment of the present invention is applied, and Figure 1(B) is a schematic enlarged view of the AA cross-section of the window structure shown in Figure 1(A). [Figure 2] Figure 2 is a diagram illustrating a first example of airflow passing through the ventilation device 1. [Figure 3] Figure 3 is a diagram illustrating a second example of airflow passing through the ventilation device 1. [Modes for carrying out the invention]

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0011] Figure 1(A) is a schematic front view of a window structure to which the ventilation device 1 according to this embodiment is applied, and Figure 1(B) is a schematic enlarged view of the AA cross-section of the window structure shown in Figure 1(A). In Figure 1(B), the cross-section of the portion of the ventilation device 1 according to this embodiment is drawn with hatching, while the cross-sections of the other parts of the window structure are mainly drawn with lines.

[0012] As shown in the figure, the ventilation device 1 according to the present embodiment is disposed between a suction port 31 which is an outdoor-side opening and a blowout port 32 which is an indoor / outdoor opening in a pericaunter (lower frame portion) 30 of a window frame 3 of a window glass 2 installed in a high-rise building or the like.

[0013] The ventilation device 1 includes a main flow path 10, a sub-flow path 11, an air flow direction changing plate 12, and a resistor 13.

[0014] The main flow path 10 connects an outdoor-side opening 100 connected to the suction port 31 of the pericaunter 30 and an indoor-side opening 101 connected to the blowout port 32 of the pericaunter 30.

[0015] The sub-flow path 11 branches from the middle of the main flow path 10 and has a branch portion 110 provided on the wall surface 103 side in the middle of the main flow path 10 and an indoor-side opening 111 connected to the blowout port 32 of the pericaunter 30.

[0016] The air flow direction changing plate 12 is disposed in the vicinity of the branch portion 110 on the wall surface 102 on the opposite side of the branch portion 110 in the main flow path 10. The air flow flowing in from the outdoor-side opening 100 through the suction port 31 of the pericaunter 30 collides with the air flow direction changing plate 12 and changes its traveling direction according to the momentum (inertial force) of the air flow. Specifically, for an air flow with a wind speed less than a predetermined threshold wind speed (which varies according to the installation situation etc.), most of it passes through the main flow path 10 even after colliding with the air flow direction changing plate 12, but for an air flow with a wind speed of the predetermined threshold wind speed or more, after colliding with the air flow direction changing plate 12, a part of it changes its traveling direction and is distributed from the branch portion 110 to the sub-flow path 11.

[0017] Here, the threshold wind speed can be adjusted by changing the size L (see FIG. 1), the installation position, and the installation angle of the air flow direction changing plate 12.

[0018] For example, the larger the size L of the airflow direction changing plate 12, the lower the threshold wind speed becomes, increasing the airflow distributed from the main flow path 10 to the sub-flow path 11, and decreasing the airflow passing through the indoor opening 101. When the size L of the airflow direction changing plate 12 is increased to a predetermined size, almost all of the airflow that flows into the outdoor opening 100 via the intake port 31 of the pericounter 30 is distributed to the sub-flow path 11.

[0019] Furthermore, when the airflow direction changing plate 12 is moved in a direction that brings it closer to the outdoor opening 100 of the main flow path 10, the threshold wind speed decreases, the airflow distributed from the branching section 110 to the sub-flow path 11 increases, and the airflow passing through the indoor opening 101 decreases. On the other hand, when the airflow direction changing plate 12 is brought closer to the indoor opening 101 of the main flow path 10, the threshold wind speed increases, the airflow distributed from the branching section 110 to the sub-flow path 11 decreases, and the airflow passing through the indoor opening 101 increases.

[0020] Furthermore, the airflow direction changing plate 12 is preferably shaped in such a way that it effectively changes the direction of the airflow in accordance with the force (inertial force) when it collides with the airflow flowing in from the outdoor opening 100, and also suppresses the vortices and turbulence that occur at that time. For example, the airflow direction changing plate 12 may be a concave body (for example, a semi-cylindrical body) with a circular arc cross-section relative to the outdoor opening 100 of the main flow path 10.

[0021] The resistor 13 is positioned at the indoor-side opening 111 of the sub-flow channel 11 and limits the airflow rate passing through it. The resistor 13 can be made of a porous material with good air permeability, a mesh structure, a nonwoven fabric (e.g., an air filter), or the like.

[0022] In this embodiment, the resistor 13 is placed at the indoor-side opening 111 of the sub-channel 11, but the resistor 13 may also be placed inside the indoor-side opening 111 of the sub-channel 11.

[0023] Figure 2 is a diagram illustrating a first example of the airflow passing through the ventilation device 1 in Figure 1(B) (when the airflow flowing in from the outdoor opening 100 is below the threshold wind speed). Note that in Figure 2, some of the window structure other than the ventilation device 1 shown in Figure 1(B) is omitted.

[0024] As shown in the figure, the airflow S that flows in from the outdoor opening 100 of the main flow path 10 via the intake port 31 of the pericounter 30 passes through the main flow path 10 and collides with the airflow direction changing plate 12. Here, if the wind speed of the airflow S is less than the threshold wind speed, the force (inertial force) of the airflow S is weak, and therefore most of the airflow is not distributed to the sub-flow path 11, but is blown out from the outlet 32 ​​of the pericounter 30 via the indoor opening 101. Even if some of the airflow is distributed to the sub-flow path 11 from the branching section 110, it does not pass through the indoor opening 111 due to the resistor 13 installed in the sub-flow path 11.

[0025] Figure 3 illustrates a second example of airflow passing through the ventilation device 1 (when the airflow entering from the outdoor opening 100 is equal to or greater than the threshold wind speed). Note that, as with Figure 2, some of the window structure other than the ventilation device 1 shown in Figure 1(B) is omitted in Figure 3.

[0026] As shown in the figure, the airflow S' that flows in from the outdoor opening 100 of the main flow path 10 via the intake port 31 of the pericounter 30 passes through the main flow path 10 and collides with the airflow direction changing plate 12. Here, if the wind speed of the airflow S' is greater than or equal to the threshold wind speed, the force (inertial force) of the airflow S' is strong, so the airflow direction changes to the direction of the branching section 110, and a portion of it is distributed to the sub-flow path 11. At this time, the airflow distributed to the indoor opening 111 has its airflow volume limited by the resistor 13 before being blown out from the outlet 32 ​​of the pericounter 30. Of the airflow S' that collides with the airflow direction changing plate 12, the remaining airflow that is not distributed to the sub-flow path 11 is blown out from the outlet 32 ​​of the pericounter 30 via the indoor opening 101.

[0027] One embodiment of the present invention has been described above.

[0028] In this embodiment, of the airflow flowing into the outdoor opening 100 of the main flow path 10, airflow below the threshold wind speed is not guided to the sub-flow path 11 but passes through the indoor opening 101 and is supplied to the room. On the other hand, airflow above the threshold wind speed is partially guided to the sub-flow path 11 by the airflow direction changing plate 12, but the airflow volume is limited by the resistor 13 and supplied to the room. Thus, according to this embodiment, the wind force of the airflow taken into the room can be adjusted without using movable parts, so the possibility of failure during use is low and maintenance is easy. Furthermore, even if a gust of wind blows into the main flow path 10, it is possible to respond instantaneously and suppress the instantaneous increase in the wind force of the airflow taken into the room.

[0029] Furthermore, in this embodiment, the resistor 13 is an air filter such as a porous material with good breathability, a mesh structure, or a nonwoven fabric. Therefore, it can be expected that the resistor 13 will also have the effect of removing dust contained in the strong wind (airflow above the threshold wind speed) flowing into the sub-channel 11.

[0030] Furthermore, in this embodiment, the indoor opening 101 and the indoor opening 111 of the sub-flow channel 11 are connected to the same outlet 32 ​​of the pericounter 30. Therefore, by providing an opening and closing mechanism at the outlet 32, both the indoor opening 101 and the indoor opening 111 of the sub-flow channel 11 can be opened and closed simultaneously, improving convenience.

[0031] It should be noted that the present invention is not limited to the embodiments described above, and modifications are possible within the scope of its gist.

[0032] For example, in the above embodiment, the airflow direction changing plate 12 is concave with respect to the upstream side of the airflow, but the present invention is not limited thereto. It may also be a flat surface installed at an appropriate angle to the airflow to guide the airflow of the main channel 10 to the sub-channel 11.

[0033] Furthermore, in the above embodiment, the airflow direction changing plate 12 and the branching section 110 are positioned at a point where the main flow path 10 bends approximately 90 degrees from the horizontal to the vertical direction, but the present invention is not limited to this. The airflow direction changing plate 12 and the branching section 110 may be positioned at a point in the main flow path 10 that is linear in the horizontal or vertical direction. Moreover, the present invention can also be applied to ventilation systems in which the entire main flow path 10 has a linear structure in the horizontal or vertical direction.

[0034] Furthermore, in the above embodiment, the main flow path 10 is bent at approximately 90 degrees with the wall surface 102 on the outside and the wall surface 103 on the inside, so the airflow flows in the part of the main flow path 10 closest to the wall surface 102. In the present invention, the force (inertial force) of the airflow is utilized, and in the above embodiment, to easily obtain this effect, the airflow direction changing plate 12 and the indoor side opening 101 are arranged on the wall surface 102 side of the main flow path 10, while the branch section 110, sub-flow path 11, indoor side opening 111 and resistor 13 are arranged on the wall surface 103 side. However, the present invention is not limited thereto.

[0035] In particular, when applying the present invention to a linear section of the main flow path 10 in the horizontal or vertical direction, or when applying the present invention to a ventilation system in which the entire main flow path 10 has a linear structure in the horizontal or vertical direction, the above embodiment may be applied in a reversed direction relative to the main flow path 10. That is, the airflow direction changing plate 12 and the indoor side opening 101 may be arranged on the wall surface 103 side, and the branch section 110, sub-flow path 11, indoor side opening 111 and resistor 13 may be arranged on the wall surface 102 side. In this case, the characteristics that the threshold wind speed decreases and the airflow distributed from the main flow path side opening 110 to the sub-flow path 11 increases as the size L of the airflow direction changing plate 12 increases, and the characteristics that the threshold wind speed decreases and the airflow distributed from the main flow path side opening 110 to the sub-flow path 11 increases when the airflow direction changing plate 12 is moved closer to the outdoor side opening 100 of the main flow path 10, can be obtained in the same way as in the above embodiment.

[0036] Furthermore, in the above embodiment, the ventilation device 1 is installed on the pericounter (lower frame portion) 30 of the window frame 3. However, the present invention is not limited to this. The ventilation device 1 may be installed on the upper frame portion, left frame portion, or right frame portion of the window frame 3. It may also be installed on the wall surface of a building without window glass 2. In other words, the ventilation device 1 only needs to be installed to take in outside air from the outdoor opening 100 of the main flow path 10 and send it into the room from the indoor opening 101 of the main flow path 10 or the indoor opening 111 of the sub-flow path 11.

[0037] Furthermore, in the above embodiment, the indoor opening 101 of the main flow path 10 and the indoor opening 111 of the sub-flow path 11 are connected to the same air outlet 32, but the present invention is not limited to this. The indoor opening 101 of the main flow path 10 and the indoor opening 111 of the sub-flow path 11 may be connected to separate air outlets. [Explanation of Symbols]

[0038] 1: Ventilation system 2: Window glass 3: Window frame 10: Main channel 11: Secondary channel 12: Airflow direction change plate 13: Resistor 30: Pericounter 31: Intake port of Pericounter 30 32: Outlet of Pericounter 30 100: Outdoor opening of the main flow path 10 101: Indoor and outdoor openings of the main flow path 10 102, 103: Wall surface of main channel 10 110: Branching point from main channel 10 to subchannel 11 111: Indoor side opening of the sub-flow channel 11

Claims

1. A ventilation device for bringing outside air into the room, A main flow path connecting the outdoor opening and the first indoor opening, A branch section, which is an opening provided in the middle of the main flow path, and a second indoor opening, which is provided separately from the first indoor opening, are connected, and a sub-flow path is separated from the main flow path by a wall, An airflow direction changing plate is provided on the wall surface opposite to the wall surface where the branching section is located within the main flow path, and distributes a portion of the airflow with a wind speed of a predetermined value or higher that flows into the outdoor opening to the sub-flow path. The system includes a resistor positioned within the sub-flow channel or at the second indoor-side opening, which limits the airflow rate of the air passing through it. The aforementioned airflow direction changing plate is The plane is concave in shape relative to the upstream side of the main channel, or is positioned at an angle that guides the airflow of the main channel into the secondary channel. A ventilation device characterized by the following features.

2. A ventilation device according to claim 1, The resistor is formed of a porous material, mesh structure, or nonwoven fabric that has breathability. A ventilation device characterized by the following features.

3. A ventilation device according to claim 1 or 2, The first indoor opening and the second indoor opening are connected to an air outlet that is installed facing into the same room. A ventilation device characterized by the following features.

4. A ventilation method for bringing outside air into the room, A main flow path connecting the outdoor opening and the first indoor opening, A branch section, which is an opening provided in the middle of the main flow path, and a second indoor opening, which is provided separately from the first indoor opening, are connected, and a sub-flow path is provided, which is separated from the main flow path by a wall. A portion of the airflow with a wind speed of a predetermined value or higher that flows into the outdoor opening is distributed to the sub-channel by an airflow direction changing plate, which is located on the wall opposite to the wall where the branching section is provided in the main channel and has a concave shape relative to the upstream side of the main channel, or a flat surface installed at an angle that guides the airflow of the main channel to the sub-channel. The remainder of this airflow is then passed through the main channel and supplied into the room. The airflow guided into the aforementioned sub-channel is weakened by a resistor located within the sub-channel or at the second indoor-side opening, and then supplied to the room. A ventilation method characterized by the following.

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