JP3429975B2 - Air volume control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air volume control device which is installed in the back of a ceiling and which appropriately controls an air volume of a ventilation fan for a duct for connecting a discharge duct or a suction duct to ventilate a room.

[0002]

2. Description of the Related Art An example of a conventional air volume control device is shown in FIG.
0 and FIG. 11 will be described.

Inside the outer frame 103 forming the air flow passage, the damper 10 is rotated by the drive of the motor 101, and the ventilation area of the air flow passage is varied to adjust the air volume.
2, a stopper 104 for restricting the damper fully open position 105a on the upstream side or the downstream side of the inner peripheral wall of the outer frame 103.
Was provided.

In the above structure, when a damper opening signal corresponding to the required air volume in the room is input to the motor 101, the motor 101 once drives the damper 102 in the fully opening direction to the damper fully open position 105a regulated by the stopper 104. Then, with the damper fully open position 105a as a reference position, the opening of the damper 102 is controlled to a predetermined opening according to the damper opening signal, and the ventilation area is varied to secure the required air volume.

[0005]

In such a conventional air volume control device, dust 106 in the air flowing in the air passage is accumulated on the stopper 104, and in this accumulated state, the motor 101 requires the air volume required for the room. When the damper opening signal corresponding to is input, the motor 101 drives the damper 102 in the fully open direction to the damper fully open position 105a regulated by the stopper 104 until dust 106 and the like are accumulated. Damper 102 with 105a as a reference position
Control the opening of the damper to a predetermined opening according to the damper opening signal,
Although the ventilation area is variable, the damper 102 is restricted before it reaches the fully open position due to dust 106 accumulated on the stopper 104, and the damper 102 is opened with the position 105b determined as the damper fully open position as a reference position. Since it becomes impossible to control the degree to a predetermined opening by controlling the degree with the same signal as the damper opening signal with the regular damper fully open position 105a as a reference position, there is a problem that the required air volume cannot be obtained.

The present invention is to solve such a conventional problem and to stably control the opening degree of the damper without being affected by the accumulation of dust or the like flowing in the air passage to always secure a required air volume. It is an object of the present invention to provide an air volume control device capable of performing the above.

[0007]

In the air volume control device of the present invention, the outer peripheral wall of the outer frame is provided with a lever that rotates in conjunction with the rotation of the damper, and a stopper that restricts the position of the lever. Each time the damper opening degree is controlled, the lever is rotated to a position regulated by the stopper, and the damper opening degree is controlled to a predetermined opening degree using the regulated position as a reference position. is there.

According to the present invention, there is provided an air volume control device capable of stably controlling the opening degree of the damper without being affected by the accumulation of dust or the like flowing in the air passage and always ensuring the required air volume. You can

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is such that the amount of air flow is changed by driving a motor inside an outer frame forming an air flow passage to change the ventilation area of the air flow passage. A damper that adjusts the position of the damper is provided, and a lever that rotates in conjunction with the rotation of the damper and a stopper that regulates the position of the lever are provided on the outer peripheral wall of the outer frame to control the opening of the damper. Each time, the lever is rotated to a position regulated by the stopper, and a damper opening control means for controlling the opening of the damper to a predetermined opening with the restricted position as a reference position is provided. Dust etc. flowing in the air passage will not be accumulated on the stopper that regulates the position of the damper.
By accurately controlling the opening degree of the damper, it is possible to always secure the required air volume.

FIG. 1 shows an embodiment of the present invention.
~ It demonstrates, referring to FIG. (Embodiment 1) As shown in FIG. 1, a damper 2 which is rotated by driving a motor 1 inside an outer frame 3 forming an air blowing path and which adjusts an air volume by varying a ventilation area.
The outer frame 3 is provided with a lever 4 that rotates in conjunction with the rotation of the damper 2 and a stopper 5a that regulates the position of the lever 4, and the damper 2 is required. In order to control the opening degree, the lever 4 is rotated to a position 6a regulated by a stopper 5a, and a damper opening control for controlling the opening degree of the damper 2 to a required opening degree by using the regulated position 6a as a reference position. Means 40 are provided.

In the above structure, when a damper opening signal such as a pulse signal corresponding to the required air volume in the room is input to the motor 1, the motor 1 once rotates the damper 2 in the fully open direction to rotate the damper 2. The lever 4 which is interlocked with is driven to the position 6a regulated by the stopper 5a.
With the reference position as the reference position, the opening of the damper 2 is controlled to a predetermined opening according to the damper opening signal, and the ventilation area can be varied to secure the required air volume.

As described above, according to the air volume control device of the first embodiment of the present invention, the outer frame is used to detect the position 6a serving as the reference for the opening control of the damper 2 for controlling the ventilation area for ensuring the required air volume. Since it is carried out by the lever 4 and the stopper 5a provided on the outer peripheral wall of 3, the dust or the like flowing in the air flow path is not accumulated on the stopper 5a that regulates the position of the damper 2, and the stable detection of the position 6a serving as a reference can be performed. This makes it possible to accurately control the opening degree of the damper 2 and always secure the required air volume.

(Second Embodiment) As shown in FIGS. 2 and 3, a stopper 5b for restricting the position of a lever 4 which rotates in conjunction with the rotation of the damper 2 is provided from a fully closed position 8 of the damper 2. It is provided at a position beyond the fully open position 9 by rotating.

In the above structure, when the damper opening signal is input, the damper 2 is rotated from the fully closed position 8 in the fully open direction, further rotated beyond the fully open position 9, and is regulated by the stopper 5b. It stops at the position 6b which is the reference for the opening degree control of No.2.

As described above, according to the air volume control device of the second embodiment of the present invention, the rotation range for detecting the reference position 6b of the damper 2 is the range for performing the opening control, that is,
Since it is a wide range exceeding the rotation range 10 of the damper 2 from the fully closed position 8 to the fully opened position 9, it becomes easy to remove dust and the like (not shown) attached to the rotation shaft portion 12 of the damper 2 and the like. Since the grease (not shown) or the like of the sliding portion 13 of the rotating shaft portion 12 is evenly applied, the damper 2 is always stably rotated, and the opening degree of the damper 2 is accurately controlled. , It is possible to always secure the required air volume.

(Third Embodiment) As shown in FIG. 4, a position 6c, which serves as a reference for controlling the opening of the damper 2, is rotated in conjunction with the rotation of the damper 2 provided on the outer peripheral wall of the outer frame 3. It is detected by the switch 14 which is opened and closed by the lever 4, and the opening of the damper 2 is controlled to a predetermined opening based on this position 6c.

In the above structure, when the damper opening signal is input to the motor 1, the motor 1 is temporarily moved to the damper 2
The lever 4 that rotates in the fully open direction to interlock with the damper 2.
Is driven to a position 6c where the switch 14 is operated, and the opening of the damper 2 is controlled to a predetermined opening according to the damper opening signal by using this position 6c as a reference position, and the ventilation area can be varied to secure the required air volume. Becomes

As described above, according to the air volume control device of the third embodiment of the present invention, the detection of the reference position 6c of the opening degree control of the damper 2 for controlling the ventilation area for ensuring the required air volume is detected by the outer frame 3. By electrically performing with the lever 4 and the switch 14 provided on the outer peripheral wall, it is possible to confirm that the damper 2 is rotated to the reference position 6c every time the opening signal is input, and thus the reference position 6c can be detected. It is possible to reliably and accurately control the opening degree of the damper 2 and always secure the required air volume.

(Embodiment 4) As shown in FIGS. 5 and 6, the outer frame 3a is formed by rotating the outer frame 3a and the rotary shaft portion 12 of the damper 2.
The frame bodies 31 and 32 having a shape separated by a surface including the are joined by sandwiching the rotating shaft portion 12, and a tray 16 for the condensed water 19a is provided below the joint portion 15.
Further, the tray 16 is opened so that the dew condensation water 19a is dropped on the drain plate 18 provided on the blower 17 which is connected to the air volume control device.

In the above structure, the condensed water 19a which is generated in the air volume control device and leaks from the joint portion 15 to the outside of the outer frame 3
The water is collected in the drain plate 18 of the blower 17 via the tray 16 and further drained by the drain pipe 20 connected to the drain plate 18.

As described above, according to the air volume control device of the fourth embodiment of the present invention, the outer frame 3a is constructed by joining the frame bodies 31 and 32 having a shape separated by the surface including the rotating shaft portion 12 of the damper 2. Therefore, the damper 2 and the outer frame 3a provided in the outer frame 3a are
The lever 4 provided on the outer peripheral wall can be integrally formed, the damper 2 and the lever 4 are surely interlocked, the opening degree of the damper 2 is accurately controlled, and the required air volume can be always secured. At the same time, it is possible to reduce the number of parts constituting the air volume control device.

Further, the condensed water 1 generated in the air volume control device
9a flows out to the outside of the outer frame 3 from the lower part of the joint portion 15 of the frames 31 and 32, but the condensed water 19a is received by the receiving tray 16 and is further guided to the drain plate 18 of the blower 17, so that the condensed water 19a is discharged to the outside. Can be prevented from flowing out.

In the present embodiment, the condensed water 19a leaking to the tray 16 is guided to the drain plate 18 of the blower 17 and collected and drained by the drain pipe 20, but the drain pipe 20 is directly connected to the tray 16. However, the same effect can be obtained.

(Embodiment 5) As shown in FIGS. 7 and 8, a rib 26 for restricting rotation of the damper 2 when the damper 2 is fully closed is provided on the inner peripheral wall of the outer frame 3, and one of lower sides of the rib 26 is provided. A notch 21 is provided in the section.

In the above structure, in order to completely close the damper 2, the damper 2 is provided with a signal equal to or more than the opening signal required to reach the fully closed position from the reference position for opening control.
Can be achieved by forcibly abutting against the rib 20 provided on the inner peripheral wall of the outer frame 3, while the cutout portion 21 provided on a part of the lower side of the rib 26 is provided when the damper 2 is fully closed. In addition, the dew condensation water 19b generated in the air volume control device is fed to the rib 26
Will pass through without blocking.

As described above, according to the air volume control device of the fifth embodiment of the present invention, when the air volume is regulated to 0, the opening signal required for the damper 2 to reach the fully closed position from the reference position for opening control. By giving the above signals and forcing the damper 2 to abut on the ribs 26 provided on the inner peripheral wall of the outer frame 3, the airtightness at the time of fully closing can be improved and the air flow can be completely shut off. .

Further, the condensed water 1 generated in the air volume control device
9b can pass without being blocked by the rib 26 by the notch 21 provided at a part of the lower side of the rib 26, so that the condensed water 19b does not collect in the air volume control device.

(Embodiment 6) As shown in FIG. 9, a display piece 22 interlocking with the damper 2 is exposed to the outside on the outer peripheral wall of the outer frame 3, and a hole portion 23 is provided in the display piece 22. A screw hole portion 24 that matches the portion 23 is provided on the outer peripheral wall of the outer frame 3.

In the above structure, when the damper 2 is rotationally controlled for controlling the air volume, the display piece 22 exposed to the outside also interlocks. Further, the screw 25 is passed through the hole 23 provided in the display piece and fixed to the screw hole 24 of the outer frame 3, whereby the damper 2 can be fixed by blocking its rotation at an arbitrary position. Becomes

As described above, according to the air volume control device of the sixth embodiment of the present invention, when the damper 2 is rotationally controlled for air volume control, the damper 2 is covered by the outer frame 3. , Its operation cannot be confirmed from the outside, but since the display piece 22 interlocking with the damper 2 is exposed to the outside, it is possible to confirm the operation of the damper 2 by confirming the operation of the display piece 22. It can be confirmed from the outside that the air volume is controlled.

Further, in order to fix the air flow control amount to a certain constant value, the screw 25 is passed through the hole 23 provided in the display piece, and the screw hole 24 provided in the outer peripheral wall of the outer frame 3 is provided. By fixing, the rotation of the damper 2 can be achieved by blocking the rotation of the damper 2 at an arbitrary position, and the confirmed constant air volume can be secured.

[0032]

As is apparent from the above embodiments,
A damper that is provided inside the outer frame that forms the air passage and that rotates by driving a motor to adjust the air volume by changing the ventilation area of the air passage, sets the reference position for controlling the opening of this damper. By providing a lever that interlocks with the rotation of the damper for detection and a stopper that regulates the position of this lever on the outer peripheral wall of the outer frame, dust and the like contained in the air flowing through the air passage in the outer frame acts as a stopper. It is possible to always detect a stable reference position without depositing, accurately control the opening degree of the damper, and always secure the required air volume.

By providing a stopper for restricting the position of the lever that rotates in conjunction with the rotation of the damper at a position beyond the fully opened position when the damper rotates from the fully closed position,
Since it becomes easy to remove dust and the like adhering to the rotating shaft portion of the damper and the grease and the like of the sliding portion of the rotating shaft portion are evenly applied, the damper will always rotate stably. By accurately controlling the opening of the damper, it is possible to always secure the required air volume.

Further, the reference position for controlling the opening of the damper is detected by a switch which is opened and closed by a lever which is interlocked with the rotation of the damper provided on the outer peripheral wall of the outer frame to electrically detect the reference position. Since it is possible to detect the reference position constantly, it is possible to accurately control the opening degree of the damper and always secure the required air volume.

The outer frame is provided on the outer peripheral wall of the damper and the damper by forming the outer frame by joining the frame bodies separated from each other at the surface including the rotating shaft portion of the damper. Since the lever for detecting the reference position of the opening control can be integrally configured, the damper and the lever are surely interlocked with each other, the opening control of the damper is accurately controlled, and the required air volume can always be secured. At the same time, it is possible to reduce the number of parts constituting the air volume control device.

Further, by providing a receiving tray under the joint of the frame constituting the outer frame, the condensate water generated in the air volume control device and flowing out of the joint is received by the tray, and the drain of the blower is also received. Since it is guided to the plate or the like, it is possible to prevent the condensed water from flowing out.

Further, by providing a rib on the inner peripheral wall of the outer frame for restricting the rotation of the damper when the damper is fully closed, the damper is provided with a signal equal to or more than the opening signal required from the reference position for opening control to full closing. To force the damper 2 to abut the rib,
The airtightness when fully closed can be improved and the flow of wind can be completely shut off.

Further, by providing a cutout portion at a part of the lower side of the rib, the dew condensation water generated in the air volume control device passes through without being blocked by the rib, so that the air volume control device is provided. Condensed water will not collect.

Further, by providing a display piece exposed to the outside on the outer peripheral wall of the outer frame so as to be interlocked with the rotation of the damper, the operation of the damper which cannot be confirmed from the outside when the air volume is controlled depends on the display piece. It can be confirmed that the air volume can be reliably controlled.

Further, when the display piece is provided with a hole and a screw hole corresponding to the hole is provided on the outer peripheral wall of the outer frame, when fixing the air volume control amount to a certain constant value, the screw is attached to the screw. If the display piece is fixed by this, the rotation of the damper can be easily prevented at an arbitrary position, and the confirmed constant air volume can be secured.

[Brief description of drawings]

FIG. 1 is a sectional view showing an air volume control device according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing an air volume control device according to the second embodiment.

FIG. 3 is a sectional view showing an air volume control device according to the second embodiment.

FIG. 4 is a sectional view showing an air volume control device according to the third embodiment.

FIG. 5 is a sectional view showing an air volume control device according to the fourth embodiment.

FIG. 6 is an exploded perspective view showing an air volume control device according to the fourth embodiment.

FIG. 7 is an exploded perspective view showing an air volume control device according to the fifth embodiment.

FIG. 8 is a sectional view showing an air volume control device according to the fifth embodiment.

FIG. 9 is a sectional view showing an air volume control device according to the sixth embodiment.

FIG. 10 is a cross-sectional view showing a conventional air volume control device.

FIG. 11 is a sectional view showing a conventional air volume control device.

[Explanation of symbols]

1 motor 2 damper 3 outer frame 3a outer frame 3b outer frame 4 levers 5a stopper 5b stopper 6a (reference) position 6c (reference) position 8 fully closed position 9 fully open position 10 rotation range 12 Rotating shaft 14 switch 15 joints 16 saucer 21 Notch 22 Display pieces 23 holes 24 screw hole 31 frame 32 frame 40 Damper opening control means

Claims (9)

(57) [Claims] 1. A damper, which is rotated by driving a motor and adjusts an air volume by varying a ventilation area of the air passage, is provided inside an outer frame forming the air passage, and an outer periphery of the outer frame. A lever that rotates in conjunction with the rotation of the damper and a stopper that regulates the position of the lever are provided on the wall, and the lever is rotated to the position regulated by the stopper every time the opening of the damper is controlled. An air volume control device provided with damper opening control means for moving the damper to a predetermined opening with the regulated position as a reference position. 2. The air volume control device according to claim 1, wherein a stopper for restricting the position of the lever is provided at a position beyond the fully open position when the damper rotates from the fully closed position. 3. A structure in which a reference position for controlling the opening of the damper is detected by a switch opened and closed by a lever.
Airflow control device described. 4. The outer frame is formed by joining frame members having a shape in which the outer frame is separated by a surface including a rotation axis of the damper.
Or the air volume control device described in 3. 5. The air flow rate control device according to claim 4, wherein a tray for the condensed water is provided below the joint where the outer frames are joined. 6. The air volume control device according to claim 1, wherein the inner peripheral wall of the outer frame is provided with a rib for restricting rotation of the damper when the damper is fully closed. 7. The air volume control device according to claim 6, wherein a notch is provided in a part of the lower side of the rib. 8. The display piece, which is interlocked with the rotation of the damper, is provided on the outer peripheral wall of the outer frame so as to be exposed to the outside.
The air volume control device according to 4, 5, 6 or 7. 9. The air volume control device according to claim 8, wherein the display piece is provided with a hole, and a screw hole corresponding to the hole is provided on the outer peripheral wall of the outer frame.