JP5059917B2 - Air supply damper device - Google Patents

Description

  The present invention relates to an air supply damper device used in a ventilation opening provided in a building.

  When a blower such as a range hood or a ventilating fan installed in the room is operated, the air pressure in the room becomes negative due to the exhaust. In order to avoid this, an opening for ventilation is generally provided in a part of a building, and an air supply damper device is installed in this opening. When operating the blower, the shutter of the air supply damper device is opened, and the air corresponding to the amount of exhaust air is naturally supplied from the opening of the air supply damper device using the negative pressure in the room, and the pressure of the room It keeps balance.

  When the blower is not operated, the shutter of the air supply damper device is closed to prevent the entry of wind and rain from the outside. As such an air supply damper, an air volume adjusting device described in Patent Document 1 shown in FIG. 8 is known.

  In this apparatus, a shutter 3 made of two semicircular plates is provided in the air volume adjustment box 1 so as to rotate around an axis 4. The two shutters 3 have a wire 5 a for opening the shutter 3. Is connected. The wire 5 a is connected to the wire 5 b through the association piece 6, and the wire 5 b is connected to the air volume adjusting unit 8 through the pulley 7.

  When the suction port 2 is opened, the shutter 3 rotates to open the air path by turning the adjusting bolt 8a of the air volume adjusting unit 8 connected to the shutter 3 and pulling the wire 5b. The position of the opened shutter 3 is fixed by tightening the adjusting nut 8b and fixing the adjusting bolt 8a. When closing the shutter 3, if the adjustment nut 8b is loosened and the adjustment bolt 8a is returned to loosen the wires 5a and 5b, the shutter 3 is expanded by the force of the spring provided on the shutter 3, and the suction port 2 is closed.

Japanese Patent Laid-Open No. 10-197044

  The conventional air volume control device configured in this way manually operates the adjustment bolts and adjustment nuts of the air volume adjustment unit to open and close the shutter. Is unsuitable, and it cannot respond quickly when wind and rain blows due to sudden climate change.

  In addition, a dedicated tool for manually operating the adjusting bolt and the adjusting nut is necessary and must be provided. In addition, since the dedicated tool is used, it is difficult for women, children, and elderly people to operate. Normally, the air flow adjustment device is mounted vertically or horizontally as shown in FIG. 1, but when it is horizontally mounted, it may not close reliably due to the weight of the shutter. If this is strengthened, there are problems such as an increase in shutter closing sound.

  Also, the shutter may open halfway due to the wind pressure, and wind and rain may enter the room. To prevent this, the spring force of the spring must be increased. There are problems such as difficulty. In addition, there is a problem that it is difficult to operate when manually attached to a high place.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air supply damper device that has good operability and does not open the shutter due to external wind pressure.

  In the present invention, a main body is constituted by a pipe guide having an air passage on the inner side and a main body plate provided on one end side of the pipe guide, and a two-sheet structure for opening and closing the air passage inside the pipe guide of the main body. And a drive motor for opening and closing the shutter is provided on the main body plate, the drive motor and the shutter are connected by a wire, and the wire is connected to the shutter, and the wire is connected to the drive motor. The wire connecting portion is provided with direction changing means for changing the pulling direction of the wire, the shutter is opened by the drive motor, and the shutter is the main body of the pipe guide. A rotating shaft is provided at the outdoor end opposite to the plate, and the direction changing means is positioned on the body plate side corresponding to the rotating shaft of the shutter. To provided that it is the pulling direction of the wire which was set to have the pulleys to change a direction along the axis of rotation of the shutter in a direction along the plane intersecting the axis of rotation of the shutter.

  Further, the main body is composed of a pipe guide having an air passage inside and a main body plate provided at one end of the pipe guide, and a shutter for opening and closing the air passage is provided inside the pipe guide of the main body. A drive motor for opening the shutter is provided on the main body plate, the drive motor and the shutter are connected by a wire, and the wire is composed of a wire connected to the shutter and a wire connected to the drive motor. The wire connecting portion is provided with direction changing means for changing the pulling direction of the wire, and the shutter is provided with a lock mechanism for preventing the shutter from being opened when the shutter is closed. A rotating shaft is provided at the outdoor end opposite to the main body plate, and the direction changing means is connected to the rotating shaft of the shutter. In which the the direction along the plane intersecting the pulling direction of the arranged which wires at the position of the body plate side to a rotating shaft of said shutter has a pulley for changing the direction along the rotation axis of the shutter.

  Further, the shutter is configured to rotate toward the main body plate side to open the air passage, and when the shutter is fully opened, the front end of the shutter protrudes indoors from the surface of the main body plate.

  The pulley has a portion for winding the wire on the side connected to the shutter, and a portion for winding the wire on the side connected to the drive motor side.

  Further, the diameter of the portion of the pulley that winds the wire connected to the shutter is made large, and the diameter of the portion of the pulley that winds the wire connected to the drive motor is made small. .

  The shutter locking mechanism is configured by providing a fixed claw on the pipe guide side and a claw movable on the shutter side.

  Further, the unlocking operation of the shutter locking mechanism and the opening operation of the shutter are performed with the same wire.

  The wire is made of a non-metallic material.

  Further, the shutter can change a load of a spring that operates the shutter in the closing direction.

  According to the present invention, since the two-sheet shutter provided inside the pipe guide serving as the air passage is opened by the drive motor, the shutter can be easily operated.

  Further, since the shutter lock mechanism for preventing the shutter from being opened when the shutter is closed is provided, there is an effect that the air path that is not opened by the shutter being pushed by the external wind pressure is reliably closed.

  In addition, the shutter is provided with a rotating shaft at the outdoor end of the pipe guide, and is rotated and opened toward the main body plate. When the shutter is fully opened, the tip of the shutter protrudes from the surface of the main body plate to the indoor side. It has the effect of reducing pressure loss without rapid road area expansion.

  In addition, the direction changing means for changing the pulling direction of the wire operates as a pulley composed of a part winding the wire connected to the shutter and a part winding the wire connected to the drive motor side. There is an effect that can be smooth.

  Also, the diameter of the part that winds up the wire connected to the shutter of the direction changing means that changes the pulling direction of the wire is made large, and the diameter of the part that winds up the wire connected to the drive motor side is made small. Therefore, there is an effect that the movement of the drive motor can be enlarged and the movement of the shutter can be accelerated.

  The shutter locking mechanism is configured with a fixed claw on the pipe guide side and a claw movable on the shutter side, so the claw on the pipe guide side is small, and when the shutter is opened, the movable part is between the shutters. Because it enters, there is an effect that does not become resistance of the air passage.

  Further, since the unlocking operation of the shutter locking mechanism and the opening operation of the shutter are performed with the same wire, there is an effect that the configuration is simple and a series of operations can be performed only by the operation of the drive motor.

  In addition, since the wire is made of a non-metallic material, the durability is high and the life is prolonged.

  Further, since the load of the spring for operating the shutter can be changed, there is an effect that the spring pressure can be adjusted according to the use situation.

It is sectional drawing of the air supply damper apparatus of this invention. It is sectional drawing when the shutter of the air supply damper apparatus of this invention closes. It is AA sectional drawing of FIG. It is detail drawing of the shutter of this invention. It is a top view which shows the locking mechanism of this invention. It is sectional drawing which shows the locking mechanism of this invention. It is component drawing of the locking mechanism of this invention. It is sectional drawing of the conventional air supply damper apparatus.

Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to FIGS. In the figure, the air supply damper device is configured as follows. The main body 11 includes a cylindrical pipe guide 12 constituting an air passage, and a flat main body plate 13 fixed to a flange 12 a provided on one end side of the pipe guide 12. Is provided with a shutter 14 composed of two semicircular plates for opening and closing the air passage, and a drive motor 42 for moving the shutter 14 is provided on the inner surface of the main body plate 13. 14 are connected to each other by wires 32 and 43 via a pulley 40.

  The end portion (inlet of air supply) opposite to the flange 12a of the pipe guide 12 is formed with an end surface portion 12b bent inward, and the shutter 14 contacts and closes the air path. An opening corresponding to the inner diameter of the pipe guide 12 is provided in the main body plate 13, and a pair of L-shaped support arms 16 that support the rotating shaft 15 of the shutter 14 are provided in a beam 13 a provided in the center of the opening. ing. A shaft hole 16 a that holds the rotating shaft 15 is provided at the tip of the support arm 16.

  When the shutter 14 is bent with the air passage open, the two shutters become V-shaped. At this time, the front end of the shutter 14 (near the mounting portion of the lock mechanism to be described later) protrudes from the surface of the main body plate 13 to the indoor side. When the tip of the shutter 14 does not protrude, that is, when it is in the pipe guide, the cross-sectional area of the air passage that is blocked by the shutter 14 becomes a rapidly enlarged portion, which causes pressure loss of the air passage. Although it increases, the tip of the shutter 14 protrudes from the surface of the main body plate 13, so that the air passage cross-sectional area is opened to the room without the abruptly enlarged portion, so pressure loss does not occur and the air passage efficiency is good. .

  The shutter 14 is configured by combining two semicircular plates, and a U-shaped hinge 18 having a shaft hole 18a through which the rotary shaft 15 is inserted is fixed to the center side of the semicircle. The hinge 18 has an adjustment piece 18b that can change the spring force of the spring 19 for expanding the shutter 14 by changing the support height of the arm 19a. When assembling the shutter 14 through the rotary shaft 15 into the shaft hole 18 a of the hinge 18 by combining the two shutters 14, the spring 19 is inserted into the rotary shaft 15 and locks the arm 19 a to the adjustment piece 18 b of the hinge 18. When the shutter 14 rotates to the hinge 18 side, the spring 19 acts as a reaction force and works to spread the shutter 14.

  A lock mechanism 20 is provided in the center of the two shutter plates so that the shutter 14 is not opened by the external wind pressure when the shutter 14 is closed. The lock mechanism 20 includes a movable part 22 and a fixed part 23. The shutter 14 is fixed by covering the movable portion 22 with the fixing portion 23 and fastening the screw in the attachment hole 29a. At this time, the shutter surface below the movable portion 22 is formed with a wire 32 connected to the movable portion 22 and a recess 34 as a relief of the connecting portion 33.

  The movable portion 22 is formed by punching a spring stainless steel plate material to form a convex wire connection portion 26, bent up at the tip of the wire connection portion 26, and formed at the same center on the opposite side of the claw 24. A tongue portion 26 a is provided on the line, and the spring arm 25 extends in a direction perpendicular to the center line of the claw 24 and the wire connection portion 26 and is bent perpendicularly to the plane of the wire connection portion 26. The wire 32 is fixed to the mounting hole 26b with a screw.

  The fixed portion 23 includes a storage portion 27 having a substantially U-shaped cross section for storing the movable portion 22, and a pressing portion 29 perpendicular to the vertical surface 27 a provided continuously with the vertical surface 27 a of the storage portion 27. In addition, arm support portions 28 are provided at both ends of the standing surface 27 a of the storage portion 27. The distal end 28a of the arm support portion 28 supports both ends of the spring arm 25 of the movable portion 22 while ensuring a predetermined dimension necessary for the spring arm 25 to bend from the elevation surface 27a. This predetermined dimension is necessary for the spring arm 25 to bend when the shutter 14 is closed and to generate a spring force that presses the claw 24 against the inner surface of the pipe guide 12, and for the claw 24 to be disengaged from the claw 12d described later. It is a dimension that combines the length to secure the stroke.

  The end of the holding portion 29 on the opposite side of the standing surface 27a is bent into an R shape so that when the wire 32 comes into contact and slides, it slides smoothly so that the wire 32 is not damaged or worn. . On the inner side of the pipe guide 12, a claw 12 d is projected at a position where it engages with a claw 24 provided on the shutter 14. The shape of the claw 12d is such that the surface on the side engaged with the claw 24 is perpendicular to the inner diameter surface of the pipe guide 12 so that the engagement can be reliably maintained. On the other hand, the other side not engaged with the claw 24 is configured such that when the shutter 14 is closed, the claw 24 smoothly slides and is easily pushed into the storage portion 27 side.

  One end of the wire 32 for opening and closing the shutter 14 is connected to the movable portion 22 of the lock mechanism 21 of the shutter 14, and the other end is connected via a roller 41 to a pulley 40 for winding the wire. Since the wire 32 is tensioned in a curved line, a flexible wire such as a plant, animal or synthetic fiber fiber wire is used.

  The roller 41 is positioned in front of the pulley 40 and guides the two wires 32 so as to be wound around the pulley 40 so that the direction of the groove of the pulley matches the direction of the wire. The pulley 40 includes a portion 40a for winding the wire 32 from the shutter 14 and a portion 40b for winding the wire 43 connected to the drive motor 42 to rotate the pulley 40 itself. The diameter of the portion 40 a that winds up the wire 32 from the shutter 14 is twice as large as the diameter of the portion 40 b that winds up the wire 43 connected to the drive motor 42. As a result, the operation of pulling from the drive motor 42 is expanded to speed up the movement of the shutter 14.

  Further, the direction of the wire for pulling the shutter 14 using the pulley 40 is changed to a right angle direction, and the drive motor 40 is installed on the surface of the main body plate 13 away from the air passage so as not to become the resistance of the air passage. Yes. The pulley 40 has a small thickness so that when the shutter 14 becomes V-shaped by opening the air path, it does not become a resistance of the air path as a thickness that fits between the shutters.

  The drive motor 42 is attached, for example, on the lower indoor surface side away from the blowout of the air passage of the main body plate 13 in a direction in which an output shaft (not shown) is perpendicular to the surface of the main body plate 13. A pulley (not shown) for winding the wire 43 is fixed to the output shaft. The drive motor 42 rotates forward and backward to wind up or rewind the wire 43, and opens and closes the shutter 14 to open and close the air path. Further, the drive motor 42 can be stopped at an arbitrary position, and the opening / closing state of the shutter 14 is adjusted to adjust the supply air volume, and the position is maintained.

  The air supply damper device configured as described above is attached by inserting the pipe guide 12 portion into the ventilation hole provided in the wall from the indoor side. When air supply is required, the shutter 14 is opened, and when air supply is not required, the shutter 14 is closed to prevent external air supply. When air supply is necessary, the switch of the drive motor 42 is turned on and the wire 43 is wound up. When the wire 43 is wound around the drive motor, the pulley 40 rotates. When the pulley 40 rotates, the wire 32 connected to the shutter 14 is wound up on the pulley 40 and a force is applied to the lock mechanism 20 provided in the shutter 14 to pull the movable portion 22.

  The pulled movable portion 22 moves toward the center of the shutter 14, and the claw 24 is disengaged from the claw 12 d of the pipe guide 12. Since there is a small amount of play between the nail 24 and the nail 12d, the nail 24 can be removed. When the claw 24 is detached from the claw 12d and the movable portion 22 is further pulled by the wire 32, the surface of the spring arm 25 of the movable portion 22 abuts against the rising surface 27a of the fixed portion 23 and the movement of the movable portion 22 stops.

  When the movable portion 22 stops, the pulling force of the wire 32 is transmitted from the movable portion 22 to the shutter 14 via the fixed portion 23, and the shutter 14 is lifted and rotated around the rotation shaft 15 to open the air path. The pulley diameter 40a around which the wire 32 is wound is larger than the diameter 40b around which the wire 43 is wound, and the movement of the wire 43 is expanded to speed up the operation of the shutter 14. When the drive motor 42 rotates by a predetermined angle, the motor stops and the air passage is fully opened. At this time, the shutter 14 is V-shaped, and the pointed side is on the outside, reducing the air path resistance of the air supply.

  By adjusting the V-shaped shape of the shutter 14, the air passage area can be adjusted, and the supply air volume can be adjusted. Therefore, the necessary air volume can be easily obtained. Further, when the power of the drive motor 42 is turned off, the state can be maintained.

  When air supply is not required, the wire 43 is loosened by driving the drive motor 42 in the “closed” direction. Since the shutter 14 always pulls the wire 32 to spread by the spring 19, when the wire 43 is loosened, the pulley 40 rotates backward, the wire 32 is rewound, the shutter 14 spreads and the air path is closed. When the air passage is closed, the claw 24 of the lock mechanism 20 is engaged with the claw 12d of the pipe guide 12. Since the claw 24 is pressed against the pipe guide 12 by the spring force of the spring arm 25 and does not come off the claw 12d, the shutter 14 is pushed back even if a strong external wind pressure is applied, and the air path is not opened.

  When the shutter 14 is closed, if the spring force of the spring 19 is strong and the closing sound is loud, or if the shutter cannot be closed due to the attached state, the position of the arm 19a of the spring 19 is applied to or removed from the adjustment piece 18b. To adjust the spring force.

  This device can be operated by turning the switch on and off by opening and closing the shutter with the drive motor in this way, and even if the device is installed at a high place, the operation part (switch) can be reached by human hands. Anyone can easily handle and operate it. Further, since the opening / closing position of the shutter can be changed and adjusted by operating the drive motor, the air volume can be easily adjusted as necessary.

Embodiment 2. FIG.
The second embodiment uses the drive motor of the first embodiment that rotates in one direction, and is the same as the first embodiment except for the type of drive motor and operation switches. When opening the shutter 14 for supplying air, when the operation switch is turned ON, the drive motor 42 operates to open the shutter 14. At this time, the shutter 14 is fully opened. When it is desired to keep the shutter 14 open, the drive motor is kept in a power-on state.

  When the supply of air is stopped and the shutter 14 is closed, when the drive motor 42 is turned off, the shutter 14 spreads by the spring force of the spring 19 and closes the air path. Since the shutter 14 is automatically closed just by turning off the power of the drive motor 42 in this way, the operation of closing the shutter 14 is not necessary. This embodiment is applied to the case where the air supply air passage is used when fully open and fully closed, and the structure and operation circuit of the drive motor 42 are simply configured.

Embodiment 3 FIG.
The third embodiment uses the switch operation of the second embodiment in conjunction with a blower (not shown) provided in the room and an air supply damper device, except for electrical connection with the blower. Except for this, the second embodiment is the same as the second embodiment. By electrically connecting the blower and the air supply damper in an interlocked manner, when the air blower is operated, the air supply damper device is energized, the drive motor 42 is operated, and the shutter 14 is opened and held in a fully opened state. To do.

  When the blower stops, the power of the drive motor 42 of the air supply damper device is turned off, and the shutter 14 spreads and closes the air path by the spring force of the spring 19 of the shutter 14. As described above, the air supply damper is automatically opened and closed by operating the air blower by interlocking the air blower and the air supply damper. Further, when the blower is operated, the shutter 14 is surely opened, so that efficient ventilation can be performed. When the blower stops, the drive motor 42 of the air supply damper can be reversed to close the shutter 14.

DESCRIPTION OF SYMBOLS 11 Main body 12 Pipe guide 12d Claw 13 Main body plate 14 Shutter 15 Rotating shaft 18 Hinge 18b Adjustment piece 19 Spring 20 Lock mechanism 22 Movable part 23 Fixed part 24 Claw 32 Wire 40 Pulley 42 Drive motor 43 Wire

Claims (8)

The main body is constituted by a pipe guide having an air passage inside and a main body plate provided at one end of the pipe guide, and a shutter for opening and closing the air passage is provided inside the pipe guide of the main body. A drive motor for opening is provided on the main body plate, the drive motor and the shutter are connected by a wire, and the wire is composed of a wire connected to the shutter and a wire connected to the drive motor, and is connected at an intermediate portion. The wire connecting portion is provided with direction changing means for changing the pulling direction of the wire, the shutter is opened by the drive motor, and the shutter is closed to the shutter when the shutter is closed. Provided,
The shutter is provided with a rotation shaft at an outdoor side opposite to the body plate of the pipe guide,
The direction changing means is arranged at a position on the main body plate side corresponding to the rotation axis of the shutter, and the direction along the rotation axis of the shutter from the direction along the plane intersecting the rotation direction of the shutter with the wire pulling direction. have a pulley to change to,
An air supply damper device characterized in that the unlocking operation of the shutter locking mechanism and the opening operation of the shutter are performed with the same wire . The main body is constituted by a pipe guide having an air passage inside and a main body plate provided at one end of the pipe guide, and a shutter for opening and closing the air passage is provided inside the pipe guide of the main body. A drive motor for opening is provided on the main body plate, the drive motor and the shutter are connected by a wire, and the wire includes a wire connected to the shutter and a wire connected to the drive motor. The connecting portion is provided with a direction changing means for changing the pulling direction of the wire, and when the shutter is closed on the shutter, a lock mechanism for preventing the shutter from opening is provided,
The shutter is provided with a rotation shaft at an outdoor side opposite to the body plate of the pipe guide,
The direction changing means is arranged at a position on the main body plate side corresponding to the rotation axis of the shutter, and the direction along the rotation axis of the shutter from the direction along the plane intersecting the rotation direction of the shutter with the wire pulling direction. have a pulley to change to,
An air supply damper device characterized in that the unlocking operation of the shutter locking mechanism and the opening operation of the shutter are performed with the same wire . 3. The shutter according to claim 1, wherein the shutter is rotated toward the main body plate side to open an air passage, and when the shutter is fully opened, the front end of the shutter protrudes indoors from the surface of the main body plate. The air supply damper device described. 3. The air supply according to claim 1, wherein the pulley has a portion for winding the wire on the side connected to the shutter, and a portion for winding the wire on the side connected to the drive motor side. Damper device. The diameter of the portion of the pulley that winds the wire connected to the shutter is made large, and the diameter of the portion of the pulley that winds the wire connected to the drive motor is made small. The air supply damper device according to claim 4. The air supply damper device according to claim 1 or 2, wherein the shutter locking mechanism is configured by providing a fixed claw on the pipe guide side and a claw movable on the shutter side. The air supply damper device according to any one of claims 1 to 6 , wherein a material of the wire is a non-metallic material. The air supply damper device according to any one of claims 1 to 7 , wherein the shutter is configured such that a load of a spring that operates the shutter in a closing direction is variable.