JPH0814407B2 - Shutter device for air passage switching - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a shutter device for switching an air passage installed on a ventilation passage such as a ventilation duct, and particularly when a multi-room system is comprehensively ventilated. The present invention relates to an airway switching shutter device that is preferably used.

[Prior Art] As a conventional shutter device of this type, as a conventional shutter device,
The technology disclosed in Japanese Patent Publication No. 44 can be mentioned.

FIG. 10 is a partially cutaway front view showing the conventional shutter device disclosed in the above publication.

In the figure, (51) is a cylindrical main body that is installed on the ventilation path, and duct connection ports (51a) are provided at both ends thereof. Reference numeral (53) is a rotary shaft instructed to penetrate the main body (51) in the diametrical direction, and reference numeral (54) is a rotary solenoid for driving the rotary shaft (53). Reference numeral (52) is a disk-shaped blade fixed to the rotation shaft (53), and is rotated in the main body (51) by the rotary solenoid (54) via the rotation shaft (53) to generate an air flow. The air passages are opened in parallel directions and closed in a direction orthogonal to the air flow. Therefore, according to the conventional shutter device, the single air passage can be opened or closed by the rotation of the blade (52).

[Problems to be Solved by the Invention] However, in the conventional shutter device, as described above,
Since a single air passage is opened and closed, a shutter device must be installed in each air passage when comprehensively ventilating multiple rooms. It was also uneconomical because it required a duct and the equipment and construction costs were high.

SUMMARY OF THE INVENTION An object of the present invention is to provide a shutter device for switching air passages that can switch the air passages in a plurality of directions with a single device to economically system-ventilate multiple rooms.

[Means for Solving the Problems] In order to solve the above problems, a shutter device for air passage switching of the present invention separates adjacent duct connection ports in a shunt box having at least three duct connection ports. The plate, at least two openings formed so as to face the duct connection port by the separate plate, and rotated in the shunt box by the motor installed in the shunt box to selectively open each opening. The shutter plate has an arcuate cross section that is closed, and a biasing means that biases the shutter plate toward a specific duct connection port.

[Operation] In the air duct switching shutter device of the present invention, when the motor is driven, the shutter plate is rotated in the shunt box, and the shutter plate closes the opening facing one duct connection port. At the same time, the opening facing the other duct connection port is opened. Therefore, a single device can switch the air passages in a plurality of directions, so that multiple rooms can be economically ventilated with inexpensive equipment. Also, when the power supply is cut off,
The shutter plate is returned and rotated to the specific duct connection port according to the urging force of the urging means to close the opening portion facing the specific duct connection port. Therefore, the air passage connected to the specific duct connection port becomes a normally closed air passage, and the normally closed air passage can be connected to a room for ventilation only when necessary.
Furthermore, since the shunt box is provided with at least three duct connection ports, the shunt box itself can be provided with the function of integrating a plurality of air passages, and the construction cost can be reduced.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal 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 lateral sectional view of FIG. 1, and FIG. FIGS. 1 and 3 are perspective views of the shutter plate, 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. 1, and FIG. Is a perspective view of the ceiling mount shown in FIGS. 1 and 2, and FIG. 8 is an electric circuit diagram of the gear motor shown in FIG.

In FIGS. 1 to 3, (1) is a shunt box installed on the ventilation path, (3) is a top cover that covers the upper end opening surface of the shunt box (1), and (17) is a shunt box ( 1) is a pair of L-shaped ceiling mounts for attaching the ceiling to the ceiling. On three sides of the shunt box (1), there are a first duct connection port (2A), a second duct connection port (2B), and a third duct connection port (2C) that are connected to a ventilation duct (not shown). They are projected in different directions by 90 degrees. In addition, a heat insulating material (19) is provided on the inner surface of the bottom plate of the shunt box (1).
However, a heat insulating material (40) is attached to the outer surface of the side plate of the shunt box (1), and a heat insulating material (18) is attached to the inner surface of the top cover (3).

As shown in Fig. 7, the ceiling mount (17) has a long hole (17
a), a daruma hole (17b), and a pair of dowels (17c) are provided. And each ceiling mount (17) is a dowel (17c)
Is positioned on the outer surface of the shunt box (1), it is attached to two diagonal positions of the shunt box (1) by screws (20) inserted through the daruma holes (17b). Further, each ceiling mount (17) is attached to the ceiling so that its position can be adjusted by a bolt (43) inserted into the elongated hole (17a).

In FIG. 3, (4A) is a first separate plate having an L-shaped cross section that divides the first duct connection port (2A) and the third duct connection port (2C) in the shunt box (1), (4B). ) Is a second separate plate having a T-shaped cross section that divides the first duct connection port (2A) and the second duct connection port (2B) in the shunt box (1), and (4C) is the shunt box (1 ) Is a third separate plate having an L-shaped cross section that divides the second duct connection port (2B) and the third duct connection port (2C) in the parentheses. The first to third separate plates (4A) to (4C) are detachably attached to the shunt box (1) by screws (30) so as to project toward the center of the shunt box (1). The partition (41) and the joint (42) bent or fixed to the projecting end of the partition (41). Each joint portion (42) is formed in an arcuate cross section so as to be located in the same cylindrical surface with the center of the shunt box (1) as an axis, and its circumferential end portion has a small curvature R portion (not shown). It is bent in an L shape outward through. (22) is a heat insulating material attached to one side surface of the first to third separate plates (4A) to (4C).

(39A) is a first opening formed so as to face the first duct connection port (2A) from the inside by the respective joints (42) of the first separate plate (4A) and the second separate plate (4B), (39B) is a second opening formed so as to face the second duct connection port (2B) from the inside by the respective joints (42) of the second separate plate (4B) and the third separate plate (4C). Is.

1 and 2, (11) is a motor mounting plate fixed to the top cover (3), (10) is a gear motor installed on the motor mounting plate (11), and (15) is a gear motor ( A protective cover for protecting 10), and (16) a power cord for the gear motor (10). (12) is a gear motor (10)
It is a pulley that is rotated by, and as shown in FIG.
A D-cut connecting hole (12b) inserted and connected to an output shaft (not shown) of the gear motor (10) is formed in the center thereof, and a protrusion (12a) is provided on the outer peripheral portion so as to project downward. .

In FIG. 1, (6) is a rotating shaft that is erected in the center of the shunt box (1) below the pulley (12), and its upper and lower ends are a bearing (7) and an E ring (8). It is supported by the top cover (3) and the shunt box (1) via the.
Reference numeral (9) is a connecting arm for connecting the upper end of the rotating shaft (6) to the pulley (12), and as shown in FIG. 6, an insertion hole (which is inserted into the protrusion (12a) of the pulley (12) ( 9a), a D-cut connecting hole (9b) connected to the rotating shaft (6), a cylindrical portion (9c) externally fitted to the upper end of the rotating shaft (6), and a spring-loaded protrusion ( 9d) and. The connecting arm (9) and the pulley (12) are integrally rotatably connected to each other through the engagement of the insertion hole (9a) and the protrusion (12a), whereby the rotating shaft (6) gear motor It is configured to reciprocally rotate with the forward and reverse rotation of (10). The second
In the figure, (23) is a stopper that determines the rotation limit position of the connecting arm (9) in one direction.

3 and 4, (5) is the rotating shaft (6)
A shutter plate that rotates integrally with the shunt box (1), and has a size capable of closing the first opening portion (39A) and the second opening portion (39B); Separate board (4
A) to (4C) are formed to be curved in an arcuate cross-section with substantially the same curvature as the joint (42), and both ends in the circumferential direction are L-shaped inward through R-parts (not shown) of small curvature. It is bent into a shape. On the inner surface of the shutter plate (5), V which is opened about 90 degrees
A pair of upper and lower support arms (25) having a letter shape are fixedly attached.
A grip cylinder (25a) for elastically gripping the rotary shaft (6) is formed at the base of the support arm (25), and the shutter plate (5) is screwed (31) by the grip cylinder (25a). Is attached to the rotating shaft (6) so as to be adjustable in rotation. Then, the shutter plate (5) is rotated by the gear motor (10) on the rotating shaft (6).
It is reciprocally rotated in the shunt box (1) through the shunt box, and its both ends are joined to the first to third separate plates (4A) to (4C) as shown by the solid line and the chain line in FIG. The first opening (39A) or the second opening (39B) can be selectively closed in a state of being joined to the (42).

In FIG. 3, (21) is a heat insulating material (omitted in FIG. 4) attached to the inner surface of the shutter plate (5), and (24) is in contact with the side end surface of the shutter plate (5) to leak air. A packing member made of a flexible material such as rubber that is adhered to the inner surfaces of the joint portion (42) of the first separate plate (4A) and the third separate plate (4C) so as to prevent the above.

In FIG. 1, reference numeral (13) is a coil spring fitted onto the cylindrical portion (9c) of the connecting arm (9), and one end of the coil spring is attached to a stepped screw (14) screwed to the upper cover (3). The other end is hooked on the spring hooking protrusion (9d) of the connecting arm (9). The spring force of the coil spring (13) causes the shutter plate (5) toward the first duct connection port (2A) via the connecting arm (9) and the rotating shaft (6) by the spring force (the timepiece of FIG. 3). Direction) constituting an urging means for urging rotation, whereby the shutter plate (5) closes the first opening (39A) facing the first duct connection port (2A) when the power is turned off. It is returned and rotated to the position.

In the electric circuit of FIG. 8, (26) is a rectifying element, and (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 passage switching shutter device of the present embodiment configured as described above will be described.

When the air duct switching shutter device is powered off, the shutter plate (5) moves to the first position as shown by the solid line in FIG. 3 with the connecting arm (9) engaged with the stopper (23). The first opening (39A) is closed by the shutter plate (5) which is arranged at a position facing the one duct connection port (2A). In this state, an air passage (a solid line arrow in FIG. 3) that connects the second duct connection opening (2B) and the duct connection opening (2C) of FIG. 3 is formed, and the air passage forms the second duct connection opening ( 2B) or the room connected to the third duct connection port (2C) is ventilated.

When the power of the shutter device for switching the air passage is turned on to switch the air passage, the gear motor (10) is started, and the pulley (12), the connecting arm (9), and the rotating shaft (6) are used. The shutter plate (5) is rotated against the biasing force of the coil spring (13) toward the second duct connection port (2B). Gear motor (1
When (0) rotates a certain angle, its internal switch (28)
Operates, the gear motor (10) is stopped, and the shutter plate (5) closes the second opening (39B) so as to face the second duct connection port (2B) as shown by the chain line in FIG. Is held in the position In this state, an air passage (chain line arrow in FIG. 3) that connects the first duct connection opening (2A) and the third duct connection opening (2C) is formed, and this air passage forms the first duct connection opening (2A). ) Or the room connected to the third duct connection port (2C) is ventilated.

When the power is turned off to restore the air passage, the gear motor (10) is allowed to rotate freely, and the shutter plate (5) moves to the first duct connection port (2A) according to the urging force of the coil spring (13). The shutter plate (5) is rotated back to the opposite position, and the first opening (39A) is closed again by the shutter plate (5).
The air passage is switched from the chain line arrow to the solid line arrow.

In this way, the shutter device for air passage switching of the present embodiment is
A shunt box (1) having first to third duct connection ports (2A) to (2C) and a partition for partitioning adjacent duct connection ports (2A) to (2C) in the shunt box (1) 1st thru | or 3rd separate board (4A)-(4C), and each separate board (4A)-(4
The first opening (39) formed so as to face the first duct connection port (2A) and the second duct connection port (2B) by C).
A) and the second opening (39B), the gear motor (10) installed on the top cover (3) of the shunt box (1), and the gear motor (10) rotates in the shunt box (1). A shutter plate (5) having an arcuate cross section for selectively closing the first opening (39A) and the second opening (39B), and the shutter plate (5)
A winding spring (13) as a biasing means for biasing the rotation toward a specific first duct connection port (2A).

Therefore, according to the air duct switching shutter device of the above-described embodiment, the shutter plate (5) is rotated in the shunt box (1) by driving the gear motor (10) to switch the air duct in two ways. be able to. Therefore, it is possible to economically system-ventilate multiple rooms with one shutter device for switching air passages. Moreover, when the power is cut off, the shutter plate (5) is wound by the coil spring (13).
The air duct connected to the first duct connection opening (2A) is a normally closed air passage because the first duct connection opening (2A) is returned to the first duct connection opening (2A) to close the first opening (39A) according to the urging force of the It can be connected to a room that ventilates only when needed. Moreover, since the shunt box (1) is provided with three duct connection ports (2A) to (2C), the shunt box (1) itself can be provided with a function of integrating a plurality of air passages, Omitting the conventional T-shaped duct,
Construction costs can be reduced significantly.

Further, in the air passage switching shutter device of the present embodiment, each of the joint portions (42) of the first to third separate plates (4A) to (4C) has an arc-shaped cross section with the same curvature as the shutter plate (5). Since it is formed, the amount of leak air from the gap between the joint portion (42) and the shutter plate (5) is reduced. Joining part (42)
Also, since the circumferential end of the shutter plate (5) is bent into an L shape through the R portion having a small curvature, the shutter plate (5)
Can be rotated smoothly. Since the shutter plate (5) is attached to the rotary shaft (6) through the pair of upper and lower support arms (25), the weight of the rotary portion can be reduced. The grip cylinder portion (25a) of each support arm (25) tightly elastically grips the rotating shaft (6) to prevent the shutter plate (5) from rattling. Since the coil spring (13) is fitted onto the cylindrical portion (9c) of the connecting arm (9), the coil spring (1) when the coil spring (13) has a reduced diameter (1
The contact between 3) and the rotating shaft (6) can be reliably prevented.

In the shutter device for air passage switching of the present embodiment, the shunt box (1) is provided with the heat insulating materials (19) and (40), the top cover (3) is provided with the heat insulating material (18), and the separate plates (4A) to (4A). (4C)
The heat insulating material (22) and the heat insulating material (21) are attached to the shutter plate (5) and the shutter plate (5), respectively. Therefore, in addition to the heat insulation effect of each part, it is possible to prevent dew condensation in cold regions, etc.
It is also possible to reduce the amount of air leaked from the periphery of the bottom of the shunt box (1) and the top cover (3). 1st separate board (4A) and 3rd
The joint portion (42) of the separate plate (4C) is provided with a packing member (24) that comes into contact with the side end surface of the shutter plate (5). Therefore, it is possible to surely prevent wind leakage at each closed position of the shutter plate (5) and also to give each packing member (24) a stopper function for stopping the shutter plate (5).

In the air passage switching shutter device of this embodiment, the separate plates (4A) to (4C) are detachably assembled to the shunt box (1) by screws (30), and the shutter plate (5) is also attached. The rotary shaft (6) is rotatably mounted on the rotary shaft (6) by means of screws (31). For this reason, a separate plate (4A)
By changing the mounting positions of (4C) and the direction of the shutter plate (5), the air passage can be easily switched according to the room arrangement.

In the shutter device for switching the air passage of this embodiment, the ceiling mount fitting (17) is provided with a daruma hole (17b) and a dowel (17c). Therefore, ceiling mounts (17) mounted on the ceiling
The shunt box (1) can be easily and surely assembled at an accurate position, and the shunt box (1) can be easily installed or removed without removing the screw (30).

By the way, in the above embodiment, the shunt box (1) is provided with three duct connection ports (2A) to (2C), but the present invention is not limited to this, and is shown in FIG. So that the shunt box (1) has four duct connection ports (2A) to (2D)
Can also be implemented.

FIG. 9 is a cross-sectional view of a wind path switching shutter device showing another embodiment of the present invention. In the figure, the same reference numerals as those used in the above-mentioned embodiment denote the same or corresponding components as those in the above-mentioned embodiment.

In this another embodiment, a fourth duct connection port (2D) is provided on the remaining side surface of the shunt box (1) of the above-mentioned embodiment so that the first to fourth duct connection ports (2A) to (2D). Are arranged in a cross shape. According to this configuration, the air passage connected to the fourth duct connection port (2D) is a normally open air passage, so that this normally open air passage is connected to a room that requires constant ventilation, and various ventilation is performed. The system can be realized. In the figure, (29) is an attached closing plate for closing the side plate of the shunt box (1) at that portion when the normally open air passage is not required.

Further, in each of the above embodiments, the three separate plates (4A) to (4C) are provided in the shunt box (1), but the present invention is not limited to this, and the shunt box ( By providing four separate plates in 1), it is possible to form three openings in the shunt box and selectively close each opening with a shutter plate.

Furthermore, in each of the above embodiments, a plurality of separate plates (4A)
~ (4D) are respectively divided, but the present invention is not limited to this, and a plurality of separate plates are provided on a common cylindrical member, and an opening is formed between the separate plates. Good. Then, each separate plate (4A) to (4
The shape of the joint portion (42) of D) is not limited to the arc shape in cross section as in the above embodiment, but may be a protrusion shape capable of sliding contact with the shutter plate.

Besides, a pulse motor is used as a motor, a tension spring as an urging means is provided in association with a shutter plate, and the configuration and shape of each part are arbitrarily changed and embodied without departing from the spirit of the present invention. It is also possible.

[Advantages of the Invention] As described in detail above, the shutter device for switching air passages of the present invention partitions a shunt box having at least three duct connection ports and an adjacent duct connection port in the shunt box. A separate plate, at least two openings formed so as to face the duct connection port by the separate plate, a motor installed in the shunt box, and each opening rotated by the motor in the shunt box. The shutter plate has a circular arc-shaped cross section for selectively closing the section, and a biasing means for biasing the shutter plate to rotate toward a specific duct connection port. There is an effect that it is possible to rotate the inside and selectively close at least two openings to switch the air passages in a plurality of directions, and to economically system-ventilate a multi-chamber with one device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional view showing a shutter device for switching an air passage according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a cross section of FIG. Fig. 4 is a perspective view of the shutter plate shown in Figs. 1 and 3, Fig. 5 is a perspective view of the pulley shown in Fig. 1, and Fig. 6 is a connecting arm shown in Fig. 1. Perspective view of
FIG. 7 is a perspective view of the ceiling suspension fitting shown in FIGS. 1 and 2.
FIG. 8 is an electric circuit diagram of the gear motor shown in FIG.
FIG. 10 is a cross-sectional view showing an air passage switching shutter device according to another embodiment of the present invention, and FIG. 10 is a partially cutaway front view showing a conventional shutter device. In the figure, 1: shunt box 2A to 2D: duct connection ports 4A to 4C: separate plate 5: shutter plate 10: gear motor 13: coil springs 39A, 39B: openings. In the drawings, the same reference numerals and symbols indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A shunt box having three or more duct connection ports, a separate plate for partitioning adjacent duct connection ports in the shunt box, and a separate plate formed to face the duct connection port. Two or more openings, a motor installed in the shunt box, a shutter plate having an arc-shaped cross section that is rotated in the shunt box by the motor to selectively close each opening, An air-path switching shutter device, comprising: a biasing means for biasing the shutter plate to rotate toward a specific duct connection port.