JPH0424466A - Air passage changing-over shutter device - Google Patents

Abstract

PURPOSE:To enable air flow passages of a plurality of directions to be opened or closed with one device by a method wherein openings connected to at least more than three duct connection ports are opened or closed under a rotation of the shutter plate by a motor. CONSTITUTION:A shutter plate 5 is reciprocated in a shunt box 1 together with a rotating shaft 6. It has four closing portions 5a for closing each of the openings 34b of a cylinder 34 in a cylindrical plane concentric with an opening forming plate 34a of the cylinder 34, and had four releasing portions 5b for releasing each of the openings 34b. When the power supply is turned off, the shutter plate 5 is operated such that the four releasing portions 5b are overlapped on each of the four openings 34b and then each of the duct connection ports 2A to 2C is fully opened. Under this condition, as indicated by an arrow, for example, the air flow flowed from the third duct connection port 2C is divided into the first duct connection port 2A and the second duct connection port 2B. When the power supply is turned on, each of the openings 34b of the cylinder 34 is closed by each of the closing portions 5a of the shutter plate 5 and each of the duct connection ports 2A to 2C is fully closed.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a shutter device for switching air paths installed on a ventilation path such as a ventilation duct, and is particularly suitable for comprehensive system ventilation of multiple rooms. The present invention relates to an air path switching shutter device that is suitably used.

``Prior art'' As a conventional shutter device of this type,
One example is the technology published in Japanese Patent No. 4944.

FIG. 12 is a partially cutaway front view showing the conventional shutter device disclosed in the above-mentioned publication.

In the figure, (51) is a cylindrical main body installed on the ventilation path, and duct connection ports (51a) are provided at both ends of the main body. (53) is a rotating shaft that is supported through the main body (51) in the diametrical direction, and (54) is a rotary solenoid that drives the rotating shaft (53). (52) is the rotation axis (5
It is a disc-shaped blade fixed to the main body (51) through the rotation shaft (53) by the rotary solenoid (54).
), and is configured to open the air passage in a direction parallel to the air flow and close the air passage in a direction perpendicular to the air flow. Therefore, according to the conventional shutter device, a single air passage can be opened or closed by rotating the blade (52).

[Problems to be Solved by the Invention] However, as described above, conventional shutter devices open and close a single air passage, so when comprehensively ventilating multiple rooms, it is difficult to A shutter device must be installed in the air path, and each air path must be integrated.
A duct is also required, which increases equipment and construction costs.
It was extremely uneconomical.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an air passage switching shutter device that can economically ventilate multiple rooms by opening and closing air passages in multiple directions using two or more devices.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the air path switching shutter device of the present invention connects adjacent duct connection ports in a shunt box having at least three or more duct connection ports. A plurality of separate plates for partitioning, a plurality of opening forming plates connected to each separate plate in a cylindrical plane with the axis line of the center line of the shunt box, and a plurality of opening forming plates provided to each duct connection port by these opening forming plates. An opening formed to face each other, a rotation shaft that is rotated back and forth around an axis that approximately coincides with the center line of the shunt box by a motor installed in the shunt box, and an integral part of this rotation shaft. a cylindrical shutter plate that is rotatably coupled and has a closing part that closes the opening and an opening part that opens the opening within a cylindrical surface concentric with the opening forming plate; the opening part overlaps with the opening part; and biasing means for rotationally biasing the shutter plate into position.

[Function] In the air path switching shutter device of the present invention, the openings provided facing at least three or more duct connection ports,
As the shutter plate is rotated by the motor, it is opened and closed by the closing portion and the opening portion of the shutter plate. For this reason, −
A single device can open and close air passages in multiple directions, allowing for economical system ventilation of multiple rooms with low equipment costs. Further, when the power supply is cut off, the shutter plate rotates back according to the urging force of the urging means, and its opening portion overlaps with the opening, so that the reference air path can be opened when the power is turned off. Furthermore, since the shunt box is equipped with at least three duct connection ports,
By giving the shunt box itself the ability to integrate multiple air paths, construction costs can be reduced.

[Embodiments] Hereinafter, embodiments embodying the present invention will be described based on the drawings.

FIG. 1 is a longitudinal cross-sectional view showing an air passage switching shutter device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a cross-sectional view of FIG. 1, and FIG. FIG. 3 is a perspective view of the shutter plate shown in FIG. 3, FIG. 5 is a perspective view of the pulley shown in FIG. 1, FIG. 6 is a perspective view of the connecting arm shown in FIG. 2 is a perspective view of the ceiling mount fitting shown in FIG. 2, and FIG. 8 is an electric circuit diagram of the gear motor shown in FIG. 1.

In Figures 1 to 3, (1) is a shunt box installed on the ventilation path, (3) is a top cover that covers the upper opening of the shunt box (1), and (17) is a shunt box (1). ) is a pair of L-shaped ceiling mounts that are attached to the ceiling. The three sides of the shunt box (1) have a first duct connection port (2A), a second duct connection port (2B), and a third duct connection port (2C) connected to the ventilation duct (path shown). They each protrude in 90 degrees different directions. In addition, a heat insulating material (19) is placed on the inner surface of the bottom plate of the shunt box (1), and a heat insulating material (40) is placed on the outer surface of the side plate of the shunt box (1).
), but a heat insulating material (18) is applied to the inner surface of the top cover (3).

The ceiling mount (17) has a long hole (1) as shown in Figure 7.
7a), a pothole (17b), and a pair of dowels (17c)
) is provided. Each ceiling hanging bracket (17) is attached to the shunt box (1) using a screw (20) inserted into the pothole hole (17b) with the dowel (17c) positioned on the outer surface of the shunt box (1). It is attached at two diagonal positions.Furthermore, each ceiling mount fitting (17) is attached to the ceiling so that its position can be adjusted by a bolt (43) inserted through an elongated hole (17a).

In Fig. 3, (4) is four separate plates with a cross-sectional shape that partition adjacent duct connection ports (2A) to (2c) in the shunt box (1), and each separate plate (
4) is a partition part (4a) removably assembled to the shunt box (1) with screws (30) so as to protrude toward the center of the shunt boxes (1) and (7), and the partition part It consists of a joint part (4b) which is bent at the tip of (4a).

(22) is a heat insulating material applied to the negative side of each separate plate (4).

(34) is a cylindrical member housed in the shunt box (1) with its axis aligned with the center line of the shunt box (1), and is attached to the joint part (4b) of each separate plate (4). It includes four connected aperture forming plates (34a) and four apertures (34b) formed by each aperture forming plate (34a). The opening (34b) is connected to each duct connection port (2A
) to (2C) respectively from the inside.

In Figures 1 and 2, (11) is the motor mounting plate fixed to the top cover (3), (10) is the gear motor installed on the motor mounting plate (11), and (15) is the gear motor ( 10) Protective cover (16) is the power cord of the gear motor (10). (12) is a pulley rotated by the gear motor (10), and as shown in FIG. (12
b) is formed, and a protrusion (12a) is formed on the outer periphery.
is protruding downward.

In Figure 1, (6) is a rotating shaft that is installed below the pulley (12) with its axis aligned with the center line of the shunt box (1), and its upper and lower ends are mounted on bearings (7). and E-ring (
8) and is supported by the top cover (3) and the shunt box (1). (9) is a connecting arm that connects the upper end of the rotating shaft (6) to the pulley (12), and as shown in FIG. 9a), a D-cut connecting hole (9b) connected to the rotation shaft (6), a cylindrical portion (9c) externally fitted onto the upper end of the rotation shaft (6), and a spring hook formed by a protrusion. (9d). The connecting arm (9) and the pulley (12) are integrally rotatably connected through the engagement between the insertion hole (9a) and the protrusion (12a), so that the rotation shaft (6) is rotated. It is configured to reciprocate around an axis that coincides with the center line of the shunt box (1) as the gear motor (10) rotates forward and backward. In FIG. 2, (23) is a stopper that determines the rotation limit position in one direction of the connecting arm (9).

In Figures 3 and 4, (5) is the rotation axis (6).
It is a cylindrical shutter plate that is reciprocated within the shunt box (1) together with the opening forming plate (34a) of the cylindrical member (34).
), each opening of the cylindrical member (34) (
34b), and four opening parts (5b) that open each opening (34b).

Further, a pair of upper and lower V-shaped support arms (25) is fixed to the inner surface of the shutter plate (5), and the shutter plate (5) is fixed to the inner surface of the shutter plate (5). ) is integrally rotatably connected to the rotation shaft (6) by a screw (31). This shutter plate (5) is reciprocated by a gear motor (1o) via a rotation shaft (6) at an angle of approximately 45 degrees, so that each opening (5b) is connected to each opening (34b).
and each closing part (5a) is in the opening position (34).
b) is placed in the closing position. Note that (21) is a heat insulating material applied to the inner surface of the closing portion (5a) of the shutter plate (5).

In FIG. 1, (13) is a coiled spring fitted onto the cylindrical portion (9c) of the connecting arm (9), and one end of which is attached to a stepped screw (14) screwed into the top cover (3). , and the other end of the spring hook of the connecting arm (9) is hooked to the protrusion (9d), respectively. The coil spring (13) uses its spring force to move the connecting arm (9) to the stopper (23).
When the power is turned off, each opening (5b) of the shutter plate (5) overlaps each opening (34b) of the cylindrical member (34), and each duct connection port ( 2A)～(
2C) can be fully opened.

In the electric circuit shown in Fig. 8, (26) is a rectifying element, (2
7) is a DC coil, and (28) is an internal switch of the gear motor (10), which is configured to stop the gear motor (10) when the gear motor (10) rotates by a predetermined angle.

Next, the operation of the air path switching shutter device of this embodiment configured as described above will be explained.

When the power of the air passage switching shutter device is turned off, the shutter plate (5) is placed in the position shown in Fig. 3 with the connecting arm (9) engaged with the stopper (23), and its four The four openings (5b) overlap the four openings (34b) of the cylindrical member (34), and each duct connection port (2A) to (2C) is fully opened. In this state,
As shown by the arrow in the figure, for example, the third duct connection port (
The airflow flowing in from 2C) is connected to the first duct connection port (2A).
and a second duct connection port (2B).

When the power of the shutter device for switching the air path is turned on to switch the air path, the gear motor (10) is started and the shutter is moved through the pulley (12), the connecting arm (9), and the rotation shaft (6). The plate (5) is rotated approximately 45 degrees against the biasing force of the coil spring (13). When the gear motor (10) rotates at a predetermined rotation speed corresponding to the rotation angle of the shutter plate (5), its internal switch (28) operates to stop the gear motor (10), and the shutter plate (5) Each opening (34b) of the cylindrical member (34) is closed by each closing part (5a) of
) are closed, and each duct connection port (2A) to (
2C) is fully closed.

When the power is turned off to restore the air path, the gear motor (10) can rotate freely and the shutter plate (
5) returns and rotates according to the biasing force of the coil spring (13), each opening part (5b) overlaps each opening part (34b), and each duct connection port (2A) to (2C) is fully opened again. .

As described above, the air path switching shutter device of this embodiment includes a shunt box (1) having the first to third duct connection ports (2A) to (2C), and Four separate plates (4) partition adjacent duct connection ports (2A) to (2C), and each separate plate (4) is provided on a cylindrical member (34) whose axis is the center line of the shunt box (1). ) and each duct connection port (2A) to (2C) by these four opening forming plates (34a).
The four openings (34b) formed to face the shunt box (1), the gear motor (10) installed on the top cover (3) of the shunt box (1), and the gear motor (10) ); and a cylinder movably connected to the rotation axis (6) and concentric with the aperture forming plate (34a). A cylindrical shutter plate (5) having four closing parts (5a) for closing each opening (34b) and four opening parts (5b) for opening each opening (34b) in a plane; Open part (5b)
The coil spring (1
3).

Therefore, according to the air path switching shutter device of the above embodiment, each opening (34b) of the cylindrical member (34) provided facing the three or more duct connection ports (2A) to (2C) As the shutter plate (5) is rotated by the gear motor (10), it is fully closed or fully opened by the closing part (5a) and opening part (5b) of the shutter plate (5). For this reason,
- Air channels in multiple directions can be opened and closed at once using a single device, allowing system ventilation of multiple rooms at low equipment costs.

Furthermore, when the power supply is cut off, the shutter plate (5) rotates back according to the biasing force of the coiled spring (13), and each opening (5b) overlaps each opening (34b) of the cylindrical member (34). Therefore, when the power is turned off, all duct connection ports (2A) ~ (
2C) can be provided with an open reference air path. Furthermore, there are three or more duct connection ports (2A) in the shunt box (1).
(2C), the shunt box (1) itself has the function of integrating multiple air paths, and can be constructed at low cost without using the conventional single-shaped duct.

In the air path switching shutter device of this embodiment, since each opening forming plate (34a) is provided on the cylindrical member (34), the axis of the cylindrical member (34) is aligned with the center of the shunt box (1). If the lines are aligned, the four aperture forming plates (34a) can be assembled accurately without any errors. In addition, since the coiled spring (13) is fitted onto the cylindrical portion (9C) of the connecting arm (9),
Contact between the coil spring (13) and the rotating shaft (6) when the coil spring (13) is reduced in diameter is reliably prevented. Therefore, the shutter plate (5) can be smoothly rotated within the cylindrical member (34) to reliably switch the air path.

In the air path switching shutter device of this embodiment, the shunt box (1) is provided with heat insulating materials (19) and (40), and the top cover (
3), a heat insulating material (18) is attached to the separate plate (4), a heat insulating material (22) is attached to the shutter plate (5), and a heat insulating material (21) is attached to the shutter plate (5). Therefore, in addition to the insulation effect of each part, it is possible to prevent dew condensation in cold regions, etc., and in particular, it is possible to reduce the amount of air leaking around the bottom of the shunt box (1) and from the top cover (3).

In the air path switching shutter device of this embodiment, the ceiling mount (17) is provided with a pothole (17b) and a dowel (17c). Therefore, it is possible to easily and reliably assemble the shunt box (1) to the ceiling mount bracket (17) attached to the ceiling in the correct position, and also to install the shunt box (1) without removing the screws (30). Can be easily installed or removed.

Next, another embodiment of the present invention will be described with reference to FIGS. 9 to 11.

FIG. 9 is a cross-sectional view showing a shutter device for switching an air path according to another embodiment of the present invention, and FIG. 10 is a cross-sectional view showing a shutter device for switching an air path according to still another embodiment of the present invention. 1
FIG. 1 is a perspective view of the shutter plate shown in FIG. 10. In the drawings, the same reference numerals as in the above embodiment indicate the same or corresponding components as in the above embodiment.

The air path switching shutter device of the embodiment shown in FIG. 9 has a fourth duct connection port (2D) protruding from the remaining side surface of the shunt box (1) of the embodiment of FIG. ~4th duct connection port (
2A) to (2D) are arranged in a cross shape. According to this configuration, the four open parts (5b
) into the four openings (34b) of the cylindrical member (34), the first to fourth duct connection ports (2A) to (2D) can be fully opened all together, as shown by the arrows in the figure. As shown, for example, the airflow flowing in from the third duct connection port (2C) can be branched into three directions. Furthermore, by rotating the shutter plate (5) approximately 45 degrees from this state, each of the duct connection ports (2A) to (2D) can be fully closed. Note that (29) is an attached closing plate that closes the side plate of the shunt box (1) at that portion when the fourth duct connection port (2D) is not required.

In another embodiment shown in FIGS. 10 and 11,
The shutter plate (5) is provided with a pair of closing portions (5a) and an opening portion (5b), respectively.

In this configuration, when the shutter plate (5) is rotated to the position shown in FIG. 10, its pair of closing parts (5a) overlap the left and right openings (34b) in the figure, and the first duct is connected. When the opening (2A) and the fourth duct connection port (2D) are closed, the pair of openings (5b) overlap the upper and lower openings (34b) in the figure, as shown by solid line arrows in the figure. Then, the second duct connection port (2B) and the third duct connection port (2C) are opened. In addition, if the shutter plate (5) is rotated approximately 90 degrees from this state, contrary to the above case, the first duct connection port (
2A) and the fourth duct access port (2D) are opened, and the second duct connection port (2B) and the third duct connection port (2c) are closed. Therefore, according to this embodiment, the cross-shaped air paths can be alternately switched by using the second device.

In addition, in each of the above embodiments, four opening forming plates (34a) are used.
are provided on a common cylindrical member (34), however, the present invention is not limited to this, and each opening forming plate may be divided and configured. Moreover, the cylindrical member (3
4) is omitted, and the joint part (4b) of each separate plate (4) is omitted.
) can be made larger than the illustrated example, so that it can function as an aperture forming plate.

Furthermore, although a gear motor (1o) is used in the above embodiment, a stepping motor may also be used instead. In this case, by controlling the stop position of the shutter plate, the opening area of each opening can be adjusted, and the air volume of each air path can be easily adjusted.

[Effects of the Invention] As detailed above, the air path switching shutter device of the present invention includes a plurality of separate plates that partition adjacent duct connection ports in a shunt box having three or more duct connection ports;
An opening formed to face each duct connection port by a plurality of opening forming plates connected to each separate plate in a cylindrical surface with the center line of the shunt box as the axis, and an opening formed in the shunt box to face each duct connection port. a rotating shaft that is rotated reciprocally around an axis that substantially coincides with the center line of the shunt box by an installed motor; and a cylinder that is integrally rotatably coupled to the rotating shaft and that is concentric with the aperture forming plate. A cylindrical shutter plate having a closing part that closes the opening and an opening part that opens the opening in a plane, and a biasing means that rotates and biases the shutter plate to a position where the opening overlaps with the opening. Because of this structure, multiple openings can be opened and closed by the closing and opening parts of the shutter plate, and air passages in multiple directions can be opened and closed using a single device, making it possible to create multiple rooms economically at low equipment costs. Not only can the system be ventilated, but the shutter plate can be rotated back to open the standard air path when the power is turned off, and the shunt box itself has the ability to integrate multiple air paths.
This has the effect of reducing construction costs.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing an air passage switching shutter device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a cross-sectional view of FIG. 1, and FIG. FIG. 3 is a perspective view of the shutter plate shown in FIG. 3, FIG. 5 is a perspective view of the pulley shown in FIG. 1, FIG. 6 is a perspective view of the connecting arm shown in FIG. FIG. 8 is an electric circuit diagram of the gear motor shown in FIG. 1, and FIG. 9 is a perspective view of the ceiling mount shown in FIG. FIG. 10 is a cross-sectional view showing another embodiment of the air passage switching device according to the present invention, FIG. 11 is a perspective view of the shutter plate shown in FIG. 10, and FIG. 12 is a conventional one. FIG. 3 is a partially cutaway front view showing the shutter device of FIG. In the figure: 1: Shunt box 2A to 2D: Duct connection port 4: Separate plate 5: Shutter plate 5a: Closing part
5b=opening part 6: rotation axis 10:
Gear motor 13: coiled spring 34a: opening forming plate 34b; two openings; In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] A shunt box having three or more duct connection ports; a plurality of separate plates that partition adjacent duct connection ports within the shunt box; a plurality of opening forming plates connected to each of the separate plates in a cylindrical surface; an opening formed by the opening forming plate to face each of the duct connection ports; and installed in the shunt box. a rotating shaft rotatably rotated by the motor around an axis that substantially coincides with the center line of the shunt box; and a rotating shaft rotatably coupled to the rotating shaft and connected to the opening forming plate. a cylindrical shutter plate having a closing part that closes the opening and an opening part that opens the opening in a concentric cylindrical surface; and rotating the shutter plate to a position where the opening overlaps with the opening. What is claimed is: 1. A shutter device for switching an air path, comprising an energizing means for switching an air path.