JP2633425B2 - Duct ventilation fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan for a duct, which is mounted mainly behind a ceiling and is connected to a duct communicating with the outside to exchange indoor air.

[0002]

2. Description of the Related Art Conventionally, when installing a main body behind a ceiling and connecting a duct, a ventilation fan for a duct is used by suspending the main body from a ceiling wall and performing duct piping work.
Since the ceiling material is stretched and the main body is adjusted to the position of the ceiling material, a configuration that facilitates this adjustment work has been desired.

For this reason, this type of conventional duct ventilation fan generally has a configuration shown in FIGS. That is, the main body 101 has the suction port 102 on the lower surface,
A box-shaped outer frame 104 having a discharge port 103 on one side surface,
A blower 107 having a motor 106 housed inside the outer frame 104 and having a blade 105 fixed thereto, is attached to the suction port 102 on the lower surface so as to contact the inner surface of the outer frame 104 and move up and down. The interior space 108 communicates with the suction port 102, and a frame 109 having a decorative frame stopper 116 on the inner surface thereof is attached. A decorative frame attaching spring 116 is attached to a decorative frame fixing member 116 provided on the inner surface.
The decorative frame 110 can be attached by attaching 7. The main body 101 and the frame 109 are fixed to the screw holes 118 provided on the side surfaces of the outer frame 104 of the main body 101 at positions corresponding to the screw holes 118 on the side surfaces of the frame body 109 and are vertically long. This was performed by screwing a screw 112 through the elongated hole 111.

In the above configuration, a duct ventilation fan is hung from the ceiling surface 113, piping work for the duct 114 is performed, a ceiling material 115 is stretched, and then the main body 101 is adjusted to the position of the ceiling material 115. To lower the frame 109 to the position of the ceiling material 115 by loosening the screw 112 fixing the frame 109 to the outer frame 104, tighten the screw 112 again,
1 is covered with a tape 119 or the like because the space between the ceiling and the inside of the main body 101 is communicated. As described above, the positions of the duct ventilation fan and the ceiling material 115 were easily and reliably adjusted.

[0005]

In such a conventional duct ventilation fan, the position of the main body 101 and the ceiling member 115 can be easily adjusted by the frame body 109, but the frame body 1 is not easily adjustable.
Since it is necessary to cover the long hole 111 having a function of adjusting the position of the body 09 and the main body 101 and fixing the same with a tape 119 or the like, the time and labor required for the construction are increased, and
If the work of closing is insufficient or is omitted in 19 or the like, dirty air leaks out of the main body 101 from the elongated hole 111 and fills the space above the ceiling, and further into the indoor space 108 from a gap of the ceiling material 115 or the like. There was a problem of backflow. Further, in order to attach the decorative frame 110 to the interior side of the room, it is necessary to provide the decorative frame stopper 116 on the inner surface of the frame body 109, so that there is a problem that the number of parts increases.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and is intended for ducts that are easy to construct, and do not allow air in the main body to leak to the space above the ceiling and flow back into the room without the need for tape attaching work or the like. A first object is to provide a ventilation fan.

A second object of the present invention is to provide a duct ventilation fan which has a reduced number of parts and facilitates assembly work.

[0008]

A first means for achieving the first object of the present invention is a box-shaped outer member which is installed behind a ceiling and has a suction port on a lower surface and a discharge port on one side. A main body including a frame and a blower having a motor housed inside the outer frame and having blades fixed thereto, and mounted at the suction port so as to be movable up and down in contact with the inner side surface of the outer frame, and a frame body for communicating the mouth, consists decorative frame mounted with the indoor side of the frame body, the upper inside surface of the frame
A frame-side guide portion having an opening is provided, and inserted into the outer frame of the main body from an opening above the frame-side guide portion.
A main body side guide portion which is fitted and fitted is provided, and one of the frame body side guide portion and the main body side guide portion is provided with a vertically long slot, and the other is provided with a screw hole. hole
And a ventilation fan for a duct for fixing screws in the frame .

A second means for achieving the first object is to provide a frame guide portion and a body guide portion only at two opposing positions, and to reduce the outer dimension of the frame body inside the main body. It is configured to be slightly smaller than the size and to be provided with packing in the gap.

A third means for achieving the first object is to provide a frame guide portion and a main body guide portion only at two opposing positions, and to include the frame side guide portion of the frame. A convex portion protruding inward is provided at the upper end of the inner side surface that is not used, and a stopper is provided on the outer frame when the frame body moves to the lowermost point and comes into contact with the convex portion.

According to a fourth aspect of the present invention, there is provided a configuration in which a frame side guide portion has a locking hole for locking a decorative frame mounting spring provided on the decorative frame. It is.

[0012]

According to the first aspect of the present invention, the main body is suspended from the ceiling surface, duct piping work is performed, the ceiling material is stretched, and then the main body is adjusted to the position of the ceiling material. The work can be adjusted vertically by loosening the screws that fix the main body and the frame, so that the frame can be adjusted vertically in the range of the elongated hole provided on the frame side guide. By tightening, the frame can be fixed at an arbitrary position. Moreover, the adjustment of the position of the frame is performed by fitting the body-side guide provided on the main body to the frame-side guide provided on the inner side surface of the frame. Since the hole is provided in the frame-side guide space or the body-side guide, the inside of the main body and the back of the ceiling are not communicated by this long hole, so that the long hole is not closed by tape attaching work or the like. In addition, the air inside the main body does not leak to the space above the ceiling, and the backflow to the indoor space can be prevented.

[0013] In addition, the configuration of the second means allows the frame to be adjusted not only vertically but also slightly, and can be adapted to a ceiling material having an inclination.

Further, according to the configuration of the third means, the fixing of the frame body guide portion and the main body guide portion is performed only at two opposing positions, so that the work for mounting is reduced, and the frame body is provided outside the main body. When moved to the lowermost point with respect to the frame, the convex portion does not come off the outer frame by contacting the stopper, and therefore, between the lower end of the outer frame and the upper end of the frame, the inside of the main body and the underside of the ceiling. Thus, there is no gap between the main body and the main body, and the air in the main body can be prevented from flowing back into the indoor space.

According to the configuration of the fourth means, since the elongated hole for locking the decorative frame mounting spring provided on the decorative frame is provided in the frame body side guide portion, a dedicated member for mounting the decorative frame is provided. Need not be provided, and the number of parts can be reduced.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

As shown in the figure, a main body 1 has a box-shaped outer frame 4 having a suction port 2 on a lower surface and a discharge port 3 on one side, and is housed inside the outer frame 4 to hold a blade 5. Stuck electric motor 6
The air inlet 7 on the lower surface has an outer dimension slightly smaller than the inner dimension of the outer frame 4 and is mounted so as to be movable up and down. A frame 9 for communication is provided. Further, a clearance opening upward is formed between the inner surface of the frame 9 and the inner surface, and the frame-side guide portion 19 having the clearance as an insertion port 19a.
The frame body side guide portion 19 has a long hole 11 elongated in the moving direction, that is, the vertical direction, and a decorative frame attachment provided on a decorative frame 10 detachably attached to an indoor opening end of the frame 9. And a locking hole 16 for locking the use spring 17. Note that the frame-side guide portion 19 is provided only on two inner side surfaces of the frame body facing each other. A protrusion 20 is provided at the upper end of the opposed inner side surface of the frame body 9 that does not include the frame-side guide portion 19, and the outer side surface has a gap with the inner peripheral surface of the outer frame 4. Is affixed. Further, inside the outer frame 4 of the main body 1, a main body side guide portion having a screw hole 18 which is inserted and fitted into the insertion opening 19 a of the frame body side guide portion 19 and is screwed with the screw 12 passed through the elongated hole 11. 22 are provided. Further, at a position corresponding to the convex portion 20 inside the outer frame 4, the stopper 2 which comes into contact with the convex portion 20 when the frame body 9 moves to the lowest point with respect to the outer frame 4.
3 is provided. In the drawing, 14 is a duct for communicating the inside of the main body 1 with an outdoor space (not shown), 13 is a ceiling wall,
5 is a ceiling material.

With the above configuration, the main body 1 is hung from the ceiling wall 13, and after the piping work of the duct 14 is performed, the ceiling material 15 is suspended.
In order to adjust the main body 1 to the position of the ceiling material 15, the frame side guide 19 provided on the frame 9 and the main body side guide 22 provided on the main body 1 are fixed. This can be completed by loosening the screw 12 and lowering the frame 9 to the position of the ceiling material 15 and then tightening the screw 12 again.

As described above, according to the duct ventilation fan of the present embodiment, the position adjustment for eliminating the gap between the main body 1 and the ceiling member 15 is performed by the elongated hole 11 provided in the frame 9. Since the elongated hole 11 is provided in the frame-side guide portion 19 attached to the inner surface of the frame 9, the inside of the main body 1 does not communicate with the space above the ceiling, and a tape is provided to prevent air leakage. The oblong hole 11 does not need to be closed, and the construction becomes easy, and the tape work is insufficient.
Omitted, dirty air leaks from the inside of the main body 1,
It is no longer possible to fill the space above the ceiling and to flow back into the indoor space 8 from the gap of the ceiling material 15 or the like.

The frame-side guide 19 has a decorative frame 10
Slot 16 for locking a decorative frame mounting spring 17 provided in
Therefore, it is not necessary to provide a dedicated component for attaching the decorative frame 10 to the frame body 9.

As described above, according to the duct ventilation fan of the present embodiment, the number of parts can be reduced, and the assembling work can be facilitated.

Further, the frame guide 19 and the main body guide 22 are provided only on two opposing surfaces of the inner surface of the outer frame 4 or the inner surface of the frame 9, and the outer dimensions of the frame 9 are set to Is slightly smaller than the inner size of the outer frame 4, and the packing 21 is attached to the outer surface of the outer frame 4 in the gap, so that the frame can be adjusted not only vertically but also slightly. It can also be applied to ceiling materials having a slope.

As described above, according to the duct ventilation fan of the present embodiment, when the gap between the main body 1 and the ceiling member 15 is adjusted, the position of the frame 9 in the vertical direction and the angle can be adjusted. Therefore, it is possible to cope with ceiling structures of all architectural forms, and construction becomes easy.

The frame guide 19 and the main body guide 22 are provided only on two opposing surfaces of the inner surface of the outer frame 4 or the inner surface of the frame 9, respectively. A convex portion 20 protruding inward is provided at the upper end portion of the inner surface that is not provided, and a stopper 21 is provided on the main body 1 side to come into contact with the convex portion when the frame 9 moves to the lowest point with respect to the outer frame 4. Even when the frame 9 is moved to the lowest point, it does not come off the outer frame 4, so that there is no gap between the lower end of the outer frame 4 and the upper end of the frame 9, There is no communication between the floor and the ceiling.

As described above, according to the duct ventilation fan of the present embodiment, the work of adjusting the gap between the main body 1 and the ceiling member 15 is completed without making the inside of the main body 1 communicate with the space above the ceiling. Will be easier.

In this embodiment, the frame-side guide portion 19 includes
The long hole 11 is provided in the vertical direction and the screw hole 18 is provided in the main body side guide portion 22. However, the screw hole is provided in the frame body side guide portion, the long hole is provided in the main body side guide portion, and the outer periphery of the frame body side guide portion is provided. Even if the portion and the inner peripheral portion of the main body side guide portion are fitted so as to be in contact with each other, no difference occurs in the operation and effect.

[0027]

As is apparent from the above embodiments, according to the present invention, the operation of adjusting the position so as to eliminate the gap between the main body and the ceiling material is performed by using the long holes provided for screwing.
Since it is formed on the frame side guide provided on the inner surface of the frame or the main body side guide provided inside the outer frame, it is completed without connecting the inside of the main body and the back of the ceiling, with tape etc. This eliminates the need to block the slot and
Because it can be done from the inside, construction is easy, tape work is inadequate or omitted, dirty air leaks from the inside of the main unit, fills the ceiling, and furthermore, gaps in ceiling materials etc. Can provide a ventilation fan for a duct which does not flow backward from the room to the indoor space.

Further, by making the outer dimension of the frame slightly smaller than the inner dimension of the outer frame of the main body and providing a packing in the gap, the frame can be adjusted not only in the vertical position but also in the angle. , So it can also respond to ceiling materials with slopes,
Construction becomes easy.

Further, by providing the frame with a projection on the main body and providing a stopper on the main body, even when the frame is moved to the lowest point, it does not come off the main body, and therefore the lower end of the outer frame and the upper end of the frame are not removed. Since there is no gap between the main body and the ceiling material, the work of adjusting the gap between the main body and the ceiling material is completed easily and reliably without connecting the inside of the main body and the ceiling space,
Workability is greatly improved.

Further, since the member for stopping the decorative frame also serves as the frame-side guide portion, the number of assembled parts is reduced, and the assembling workability is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a duct ventilation fan according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a view showing an installation state on the inclined ceiling material.

FIG. 4 is a cross-sectional view of a conventional duct ventilation fan.

FIG. 5 is an exploded perspective view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Suction port 3 Discharge port 4 Outer frame 5 Blade 6 Electric motor 7 Blower 8 Indoor space 9 Frame 10 Decorative frame 11 Long hole 16 Locking hole 17 Decorative frame mounting spring 18 Screw hole 19 Frame body side guide part 20 Convex part 21 Packing 22 Body side guide 23 Stopper

Claims (4)

(57) [Claims] 1. A main body comprising a box-shaped outer frame having a suction port on a lower surface and a discharge port on one side, and a blower equipped with a motor housed inside the outer frame and having a blade fixed thereto. And a frame that is attached to the inner surface of the outer frame at the suction port so as to be vertically movable and communicates with the indoor space and the suction port, and a decorative frame attached to the indoor side of the frame body. A frame body-side guide portion having an upper opening on the inner surface of the frame body, and a main body inserted into the outer frame of the main body from the upper opening of the frame body-side guide portion and fitted therein. A side guide portion is provided, and one of the frame body side guide portion and the main body side guide portion is provided with a vertically long slot, and the other is provided with a screw hole, and these long holes and screw holes are connected to the frame body.
Ventilation fan for duct to screw inside . 2. The frame guide according to claim 1, wherein the frame guide and the main body guide are provided only at two opposing positions, the outer dimension of the frame is slightly smaller than the inner dimension of the main body, and packing is provided in the gap. Ventilation fan for duct as described. 3. A frame body guide portion and a main body guide portion are provided only at two opposing positions, and a convex portion protruding inward is provided at an upper end portion of an inner side surface of the frame body not having the frame side guide portion. The ventilation fan for a duct according to claim 1 or 2, further comprising a stopper provided on the outer frame, the stopper being in contact with the projection when the frame moves to a lowermost point. 4. The ventilation fan for a duct according to claim 1, wherein the frame side guide portion has a locking hole for locking a decorative frame mounting spring provided on the decorative frame.