Air curtain device airflow direction adjustment mechanism

Abstract

To provide a blowout direction adjustment mechanism capable of adjusting a blowout direction of an air curtain device without modifying the air curtain device itself.SOLUTION: A blowout direction adjustment mechanism 100 can adjust a blowout direction of air in an air curtain device 10 having a blowout port 12 extending horizontally on its underside, and comprises: a base body 20 whose rear surface side is attached to a wall surface A of a building, and to which the air curtain device 10 is attached on its front side; protruding front-back members 41 extending forward from both right and left end parts of a lower part of the base body 20; a protruding horizontal member 42 connecting front end parts of the protruding front-rear members 41; and a plurality of direction adjustment plates 51 each of which is rotatable relative to the protruding front-rear members 41, whose upper ends are located below the blowout port 12, and which extend along the blowout port 12 at a distance in a front-rear direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a blowing direction adjusting mechanism attached to an air curtain device.

Background Art

[0002] In a logistics warehouse or factory connected to a truck bay, etc., in order to suppress the inflow of hot air from the outside into the indoor space that is continuous with the external space without shielding the outside air with a door or shutter, etc., it is effective to use an air curtain device.

[0003] Patent Document 1 discloses a device provided with an inlet communicating with a fan box incorporating a blower substantially directly below the air outlet of the air curtain device. And in this device, from the measurement results of the indoor temperature, the outdoor temperature, the blowing temperature of the air curtain device, and the inlet temperature, grasping the distribution state of the blown air flow, and controlling the blowing angle, the blown air volume, and the suction air volume so that the air shield is not broken is also disclosed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In order to apply to the technology as described in the above Patent Document 1, it is necessary to adjust the blowing direction (blowing angle) of the air curtain device. However, in a normal air curtain device, the blowing direction is fixed, and in order to adjust the blowing direction, it is necessary to install the air curtain device body in an inclined manner. In addition, among commercially available air curtain devices, there are those provided with louvers or blades capable of adjusting the blowing direction, but for an air curtain device with a fixed blowing direction, it is necessary to modify itself.

[0006] In view of the above, the present invention aims to provide a blowing direction adjustment mechanism that can adjust the blowing direction without making any changes to the air curtain device itself. [Means for solving the problem]

[0007] The air curtain device air outlet direction adjustment mechanism of the present invention is an air outlet direction adjustment mechanism capable of adjusting the air outlet direction of an air curtain device having a horizontally extending outlet on its lower surface, and is characterized by comprising: a base body whose rear side is attached to the wall surface of a building and to which the air curtain device is attached on the front side; protruding front and rear members extending forward from both left and right ends of the lower part of the base body; a protruding horizontal member connecting the front ends of each of the protruding front and rear members; and a plurality of direction adjustment plates which are rotatable with respect to the protruding front and rear members, whose upper ends are each located below the outlet, and which are spaced apart in the front and rear direction and extend along the outlet.

[0008] According to the air curtain device blowing direction adjustment mechanism of the present invention, the blowing direction of the air blown out from the air curtain device can be adjusted by a plurality of direction adjustment plates that are rotatable with respect to the front and rear protruding members that extend forward from both the left and right ends of the lower part of the base body to which the air curtain device is attached. Therefore, the blowing direction can be adjusted without making any changes to the air curtain device itself, which has a fixed blowing direction.

[0009] In the air curtain device blowing direction adjustment mechanism of the present invention, it is preferable to have a mounting base on which the rear side is fixed to the front side of the base body and the air curtain device is attached to the front side.

[0010] In this case, even if the distance between the rear end of the air outlet and the back of the air curtain device is short, the mounting base can ensure sufficient distance between the back of the air curtain device and the front of the base body. This makes it possible to position the directional adjustment plate, which is located at the rear, directly below or near the rear end of the air outlet.

[0011] Furthermore, in the air curtain device blowing direction adjustment mechanism of the present invention, it is preferable that the upper part of at least one of the plurality of direction adjustment plates is fixed to a first shaft whose ends are pivotally supported by first bearings fixed to the front of each of the protruding front and rear members, and the upper part of at least one of the plurality of direction adjustment plates is fixed to a second shaft whose ends are pivotally supported by second bearings fixed to the rear of each of the protruding front and rear members.

[0012] In this case, at least two directional adjustment plates can be rotated by rotating the first and second axes, respectively. This makes it possible to easily rotate these directional adjustment plates.

[0013] Furthermore, in the air curtain device blowing direction adjustment mechanism of the present invention, it is preferable that the gear fixed to the first shaft meshes with a first gear fixed to the rotation shaft of a first motor supported in the horizontal middle part of the protruding horizontal member, and the gear fixed to the second shaft meshes with a second gear fixed to the rotation shaft of a second motor supported in the horizontal middle part of the lower part of the base body.

[0014] In this case, by controlling the motor, it becomes possible to automatically adjust the direction of air discharge from the air curtain device.

[0015] Furthermore, in the air curtain device blowing direction adjustment mechanism of the present invention, it is preferable that the first and second gears have cutouts in the portion located between the plurality of direction adjustment plates when viewed from the side.

[0016] In this case, it becomes possible to prevent the gears from obstructing the airflow between the multiple directional adjustment plates.

[0017] Furthermore, in the air curtain device blowing direction adjustment mechanism of the present invention, it is preferable to include a flat plate-shaped connecting member that connects the horizontal outer surface of the base body and the outer surface of the protruding horizontal member.

[0018] In this case, the connecting member can reinforce the base body and the protruding horizontal member. Further, since the connecting member is in a flat plate shape, it is possible to suppress the protruding amount of the blowing direction adjusting mechanism protruding from the side end surface of the air curtain device. When the air curtain devices are arranged continuously in the horizontal direction, the interval therebetween can be narrowed, and it is possible to reduce the gap generated between the formed air curtains.

Brief Description of the Drawings

[0019] [Figure 1] Schematic top view showing the blowing direction adjusting mechanism of the air curtain device according to an embodiment of the present invention. [Figure 2] Schematic side view showing the blowing direction adjusting mechanism of the air curtain device. [Figure 3] Schematic bottom view showing the blowing direction adjusting mechanism of the air curtain device.

Embodiments for Carrying Out the Invention

[0020] The blowing direction adjusting mechanism 100 of the air curtain device according to an embodiment of the present invention will be described with reference to the drawings. Note that the drawings are for schematically explaining the present embodiment, and the dimensions are deformed.

[0021] The blowing direction adjusting mechanism 100 of the air curtain device (hereinafter simply referred to as the blowing direction adjusting mechanism) is attached to the air curtain device 10 in order to adjust the blowing direction of the existing air curtain device 10 in which the blowing direction of air is fixed.

[0022] In the present invention, the case where the blowing direction is fixed includes the case where the blowing direction cannot be adjusted and the case where the blowing direction can be adjusted manually by adjusting a louver, a blade, etc., but the blowing direction cannot be adjusted automatically (other than manually).

[0023] The air curtain device 10 includes a housing 11. Although not shown in detail, it takes in air from intake openings formed in the front part and upper part of the housing 11, and blows out the taken-in air as an air current from a blowout port 12 opened at the lower part of the housing 11 by a fan such as a blower fan, a cross-flow fan, or a centrifugal fan. The blowout port 12 is formed so as to extend over substantially the entire width of the housing 11 in the direction in which the housing 11 extends (horizontal direction). The air curtain device 10 may use a commercially available one.

[0024] The blowout direction adjustment mechanism 100 has a base body 20, a mounting seat 30, a protruding body 40, and a direction adjustment plate rotation mechanism 50.

[0025] The base body 20 is attached to a wall surface A to which the air curtain device 10 should be attached, as the base of the blowout direction adjustment mechanism 100. Here, the base body 20 is attached with its back surface (rear surface) abutting against the wall surface A. The wall surface A is a wall surface located at the upper part of an opening for forming an air curtain in a factory, a warehouse, or the like.

[0026] Here, the base body 20 is composed of a rectangular frame body having two horizontal members 21 extending parallel to the horizontal direction and two vertical members extending parallel to the vertical direction and connecting the left and right end portions of the two horizontal members 21 respectively. The horizontal members 21 and the vertical members 22 are formed of angle steel pipes here.

[0027] And, on the back surface of the base body 20, a mounting portion 23 for attaching the base body 20 to the wall surface A is provided. Here, the mounting portion 23 is a rectangular plate having an L-shaped side view, one plate-like body of which is fixed to the horizontal member 21 or the vertical member 22, and a through hole is formed in the other plate-like body. Although not shown, it is fixed to the wall surface A using a pin or an anchor inserted through this through hole.

[0028] The base body 20 may have other members besides the horizontal member 21 and the vertical member 22. For example, it may have reinforcing members such as rods, tubes, or flat plates that connect and reinforce these members 21 and 22. The base body 20 may also consist of other configurations.

[0029] The mounting base 30 has a structure that allows the air curtain device 10 to be attached to the front and is provided on the front of the base body 20. The mounting base 30 here has a rectangular box-shaped mounting base body 31 made of steel plate with an open rear end, and a plurality of mounting parts 32 that extend upward from the upper side of the rear end of the mounting base body 31 and downward from the lower side of the rear end. Although not shown, through holes are formed in the mounting parts 32, and the mounting base 30 is fixed to the horizontal member 21 using pins or bolts that are inserted through these through holes.

[0030] Furthermore, although not shown in the diagram, the front surface of the mounting base body 31 is equipped with the same configuration as that formed on the wall surface for mounting the air curtain device 10 to the wall. For example, if a claw portion is provided on the back of the housing 11 of the air curtain device 10, and a hole is to be formed on the wall surface for hooking onto this claw portion, then a hole with the same structure as this hole is formed on the front surface of the mounting base body 31.

[0031] The protruding body 40 protrudes forward from the lower part of the base body 20 and consists of a front and rear protruding member 41, a horizontal protruding member 42, and the like.

[0032] Two protruding front and rear members 41 extend forward from both the left and right ends of the horizontal member 21 on the lower side of the base body 20. A horizontally extending protruding horizontal member 42 connects the front ends of these two protruding front and rear members 41. In this case, the protruding front and rear members 41 and the protruding horizontal member 42 are formed from square steel pipes.

[0033] Furthermore, the upper outer surface of the vertical member 22 of the base body 20 and the outer surface of the intermediate portion of the protruding front and rear members 41 of the protruding body 40 are connected and reinforced by a connecting member 43 made of, for example, a steel plate. The horizontal member 21, the vertical member 22, the protruding front and rear members 41, the protruding horizontal member 42, and the connecting member 43 are fixed to each other at their connection points by bolts, welding, or the like.

[0034] The protruding body 40 is provided with a vertical gap between it and the lower surface of the air curtain device 10. The protruding horizontal member 42 is located in front of the air outlet 12 of the air curtain device 10.

[0035] The direction adjustment plate rotation mechanism 50 is a mechanism that adjusts the angle of a pair of direction adjustment plates 51A and 51B (collectively referred to as direction adjustment plate 51) that adjust the direction of air blown out from the outlet 12 of the air curtain device 10. The direction adjustment plate 51 is also called a blade or looper, and is made of rubber or resin, extends along the outlet 12, and regulates the direction of air blown out from the outlet 12. Direction adjustment plate 51A corresponds to direction adjustment plate 1 of the present invention, and direction adjustment plate 51B corresponds to other direction adjustment plates of the present invention.

[0036] The direction adjustment plate rotation mechanism 50 comprises direction adjustment plates 51A, 51B, bearings 52A, 52B (collectively referred to as bearing 52), shafts 53A, 53B (collectively referred to as shaft 53), solid plates 54A, 54B (hereinafter collectively referred to as fixed plate 54), external gears 55A, 55B (hereinafter collectively referred to as external gear 55), motor units 56A, 56B (collectively referred to as motor unit 56), and external gears 57A, 57B (hereinafter collectively referred to as external gear 57).

[0037] Furthermore, shaft 53A corresponds to the first shaft of the present invention, and shaft 53B corresponds to the second shaft of the present invention. External gear 55A corresponds to a gear fixed to the first shaft of the present invention, and external gear 55B corresponds to a gear fixed to the second shaft of the present invention. The motor (not shown) provided in motor unit 56A corresponds to the first motor of the present invention, and the motor (not shown) provided in motor unit 56B corresponds to the second motor of the present invention. Also, external gear 57A corresponds to a gear fixed to the rotating shaft of the first motor of the present invention, and external gear 57B corresponds to a gear fixed to the rotating shaft of the second motor of the present invention.

[0038] On the upper surface of the front of each of the left and right protruding front and rear members 41, bearings 52A, each having a ball bearing or the like, are fixed, and these bearings 52A support a single shaft 53A. Similarly, on the upper surface of the rear of each of the left and right protruding front and rear members 41, bearings 52B, each having a ball bearing or the like, are fixed, and these bearings 52B also support a single shaft 53B. Multiple fixing plates 54A, 54B are fixed to each of the shafts 53A, 53B, and the upper ends of the directional adjustment plates 51A, 51B are fixed across the multiple fixing plates 54A, 54B and extend downward.

[0039] The two direction adjustment plates 51 are positioned vertically close to the front and rear ends of the air outlet 12 of the air curtain device 10, with their upper ends directly below or near them. This makes it possible to direct most of the air blown out from the air outlet 12 in the desired direction.

[0040] Furthermore, it is preferable that the rotation range of the shaft 53 relative to the bearing 52 is restricted so that the direction adjustment plate 51 can rotate only within a predetermined angular range, such as 20° forward and backward from directly below. It is also preferable that the lower end of the direction adjustment plate 51 is located below the lower surface of the protruding front and rear members 41.

[0041] Furthermore, external gears 55A and 55B are fixed to the intermediate portions of shafts 52A and 52B, respectively. The external gears 55 are cut out on the side of the central part of the air outlet 12 that is closer to the direction adjustment plate 51. As a result, the external gears 55 do not obstruct the airflow guided by the two direction adjustment plates 51.

[0042] In this example, the external gear 55 has a circular shape in which a portion is cut out in a side view by the direction adjustment plate 51. However, the shape of the external gear 55 is not limited to this; for example, it may be roughly sector-shaped, and furthermore, if the shape of the external gear 55 does not exceed the direction adjustment plate 51 in a side view, it may be disc-shaped.

[0043] Motor units 56A and 56B, each equipped with a motor, are fixed to the upper surfaces of the intermediate portions of the protruding horizontal member 42 and the horizontal member 21, respectively. External gears 57A and 57B, which mesh with external gears 55A and 55B, are fixed to the rotating shafts of each motor. Each motor unit 56 is connected to wiring and control lines (not shown).

[0044] With this configuration, the motor unit 56 is controlled so that the two direction adjustment plates 51 work in coordination, for example, so that the two direction adjustment plates 51 rotate in the same direction forward and backward by the same angle.

[0045] According to the air curtain device blowing direction adjustment mechanism 100 described above, it is possible to adjust the direction of air blowing without making any changes to the air curtain device 10 itself, whose blowing direction is fixed.

[0046] Furthermore, the air curtain device's air outlet direction adjustment mechanism 100 makes it possible to automatically adjust the air outlet direction, even in an air curtain device 10 where the tilt angle of the louvers and blades can be adjusted manually.

[0047] Furthermore, the motor unit 56 is fixed to the upper surface of the intermediate portion of the protruding horizontal member 42 and the horizontal member 21, and does not protrude to the side of the air curtain device 10. And since the connecting member 43 is a steel plate, the amount of protrusion of the blowing direction adjustment mechanism 100 that protrudes from the side end face of the air curtain device 10 is suppressed. As a result, when the air curtain devices 10 are arranged continuously in the horizontal direction, the spacing between them is narrow, making it possible to reduce the gaps that occur between the formed air curtains.

[0048] It should be noted that the present invention is not limited to the air curtain device blowing direction adjustment mechanism 100 specifically described in the above-described embodiments, and can be modified as appropriate within the scope of the claims.

[0049] For example, the case in which the air outlet direction adjustment mechanism 100 is equipped with a mounting base 30 has been described. However, the mounting base 30 is provided to secure a place for the motor unit 56B so that the upper end of the rear direction adjustment plate 51B can be positioned directly below or near the rear end of the air outlet 12 of the air curtain device 10. Therefore, if a place for the motor unit 56B can be secured, the mounting base 30 may be omitted. In this case, the air curtain device 10 can be directly attached to the base body 20 on its rear surface.

[0050] Furthermore, the case in which the angle of a pair of direction adjustment plates 51 is adjusted by a motor has been described. However, the angle of a pair of direction adjustment plates 51 may also be adjusted by manually rotating the shaft 53 by an operator. In this case, the motor unit 56 and the external gear 57 can be omitted.

[0051] Furthermore, the case where there is a pair of direction adjustment plates 51 has been described. However, the number of direction adjustment plates 51 is not limited as long as there are multiple plates. For example, the angles of multiple direction adjustment plates 51 may be adjusted simultaneously by rotating a single shaft 53 to which multiple direction adjustment plates 51 are connected. [Explanation of symbols]

[0052] 10...Air curtain device, 11...Housing, 12...Air outlet, 20...Base body, 21...Horizontal member, 22...Vertical member, 23...Mounting part, 30...Mounting seat, 31...Mounting seat body, 32...Mounting part, 40...Protruding body, 41...Protruding front and rear member, 42...Protruding horizontal member, 43...Connecting member, 50...Direction adjustment plate rotation mechanism, 51...Direction adjustment plate, 51A...Direction adjustment plate (direction adjustment plate 1), 51B...Direction adjustment plate (other direction adjustment plate), 52, 52A, 52B...Bearing, 53...Shaft, 53A...Shaft (first shaft), 53B...Shaft (second shaft), 54, 54A, 54B...Fixing plate, 55...External gear, 55A...External gear (gear fixed to the first shaft), 55B...External gear (gear fixed to the second shaft), 56, 56A, 56B...Motor unit, 57...External gear, 57A...External gear (gear fixed to the rotating shaft of the first motor), 57B...External gear (gear fixed to the rotating shaft of the second motor), 100...Air curtain device blowing direction adjustment mechanism, blowing direction adjustment mechanism, A...Wall surface.

Claims

1. An air outlet direction adjustment mechanism for an air curtain device having a horizontally extending outlet on its lower surface, which allows adjustment of the air outlet direction, A base body is attached to the wall of a building on its rear side, and the air curtain device is attached to its front side, The aforementioned base body has protruding front and rear members that extend forward from both the left and right ends of the lower part, A protruding horizontal member connects the front ends of each of the aforementioned protruding front and rear members, An air curtain device blowing direction adjustment mechanism comprising a plurality of direction adjustment plates, each rotatable relative to the protruding front and rear members, the upper ends of which are each located below the air outlet, and which are spaced apart in the front-rear direction and extend along the air outlet.

2. The air curtain device blowing direction adjustment mechanism according to claim 1, characterized in that the rear side is fixed to the front side of the base body and the air curtain device is attached to the front side of the base body, wherein the air curtain device blowing direction adjustment mechanism is provided.

3. At least one of the plurality of direction adjustment plates has its upper part fixed to a first shaft, the shaft having both ends pivotally supported by first bearings fixed to the front of each of the protruding front and rear members. The air curtain device blowing direction adjustment mechanism according to claim 1 or 2, characterized in that at least one of the plurality of direction adjustment plates has its upper part fixed to a second shaft, the ends of which are pivotally supported by second bearings fixed to the rear of each of the protruding front and rear members.

4. The gear fixed to the first shaft meshes with the gear fixed to the rotating shaft of the first motor, which is supported in the horizontal middle portion of the protruding horizontal member. The air curtain device blowing direction adjustment mechanism according to claim 3, characterized in that a gear fixed to the second shaft meshes with a gear fixed to the rotating shaft of a second motor supported in the horizontal middle portion of the lower part of the base body.

5. The air curtain device blowing direction adjustment mechanism according to claim 4, characterized in that the gear fixed to the first shaft and the gear fixed to the second shaft have cutouts in the portion located between the plurality of direction adjustment plates in a side view.

6. The air curtain device blowing direction adjustment mechanism according to claim 1 or 2, further comprising a flat plate-shaped connecting member that connects the horizontal outer surface of the base body and the outer surface of the protruding horizontal member.

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