JPH09112989A - Ventilating fan for duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost of mounting a body and a drain pan and to enhance the hanging strength of the body in a ventilating fan for a duct hung from and mounted at a garret. SOLUTION: The ventilating fan for a duct comprises a body 10 for mounting a hanger 24 fixed to a hanging bolt 17 fixed to a ceiling surface 15 by a screw 22, and a drain pan 13 provided at the lower surface of the body 10. The hanger 14 for mounting the pan 13 at the body 10 is shared, and can be mounted by a screw 20 to share the components to make it possible to reduce the number of components. Thus, the fixing of the body 10 to the pan 13 is conducted with low cost, and the hanging strength of the body 10 is enhanced.

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 installed behind a ceiling and connects a discharge duct and a suction duct to ventilate a room.

[0002]

2. Description of the Related Art An example of a conventional duct ventilation fan will be described with reference to FIGS.

As shown in the figure, a discharge opening 105 is installed on the ceiling 101 and has a discharge opening 104 on the lower surface and a discharge adapter 104 for communicating with a discharge duct 103 on one side. And suction duct 1 on the other side
A box-like shape having a suction opening 108 provided with a suction adapter 107 for connecting 06 to each other, and a notch 111 fixed to a hanging bolt 110 having an upper end fixed to a ceiling surface 109 outside the side surface. A main body 114 provided with a hanging fitting 112 and a blower 113 inside, and the main body 11
4 and a drain pan 117 which is closed in conformity with the lower surface opening 102 and has a drain hole 116 for connecting a water draining pipe 115 at the lowermost portion. The drain pan 117 is fixed to the nut 121 provided on the back surface of the flange portion 120 provided on the lower surface of the main body 114 by the screw 122 from the lower side of the main body 114 via the flange portion 120. Was configured as.

In the above structure, the flange portion 120 is previously fixed before fixing the drain pan 117 to the main body 114.
A nut 121 is attached to the back surface of the main body 114 by welding or the like, and a screw 122 is attached from the lower side of the main body 114 through the flange portion 120.
Was fixed by.

Further, in order to fix the hanging metal fitting 112 to the main body 114, it has been fixed from the inside of the main body 114 with the screw 119 through the main body side surface 118.

[0006]

In such a conventional duct ventilation fan, in order to fix the drain pan 117 to the main body 114, a nut 121 must be prepared and fixed to the back surface of the flange portion 120 of the main body 114 by welding or the like. Since it is necessary to increase the number of parts, the number of man-hours for welding the nut 121 is increased and the cost is increased.
A screw 119 is used to fix the hanging bracket 112 to the main body 114.
There is a problem that the main body 114 comes off from the hanging fitting 112 when the screw comes off due to rust or the like because it is fixed by only one.

The present invention solves the above problems, and an object of the present invention is to provide a duct ventilation fan in which the main body and the drain pan are attached at low cost and the suspension strength of the main body is strong.

[0008]

In the duct ventilation fan according to the present invention, there is provided a hanging metal fitting for attaching a drain pan provided on a lower surface of a main body to which a hanging metal fitting fixed to a hanging bolt fixed to a ceiling surface is attached to the main body. It is configured to be shared and attached with screws.

According to the present invention, it is possible to provide a duct ventilation fan in which the main body and the drain pan are attached at low cost and the suspension strength of the main body is strong.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a hanging fitting fixed to a hanging bolt fixed to a ceiling surface, a duct connectable main body to which the hanging fitting is attached, and this main body. A drain pan provided on the lower surface of the drain pan, the drain pan is commonly used as a hanging metal fitting attached to the main body, and is configured to be attached with a screw,
Since the hanging metal fitting is commonly screwed to the main body and the drain pan, the number of parts is reduced, the hanging metal fitting is firmly attached, and the hanging strength of the main body is enhanced.

According to a second aspect of the present invention, a box-like shape having an opening on the lower surface, and a suction opening provided with a suction adapter connected to the suction duct on the side wall and a discharge duct are connected. The main body with the blower installed inside and the drain opening provided with the discharge adapter, the drain pan with the drain hole provided on the lower surface of the main body, and the cross-section that is roughly U-shaped Has a cutout portion into which a hanging bolt is inserted on the upper side projecting toward, and a drain metal fitting is formed on the lower side to form a mounting portion for the drain pan, and a hanging metal fitting that is attached to the side wall of the main body with a screw. Since the metal fitting has a substantially U-shaped cross section, the hanging metal fitting itself becomes strong, and since it is attached to the side wall of the main body, the hanging metal fitting is held in two places on the main body and the drain pan by screws. Ri, so that it is possible to prevent one thread from falling out body hanger be damaged.

According to a third aspect of the present invention, a receiving portion projecting inward is formed on the side opposite to the upper side of the hanging metal fitting, and the hanging metal fitting is attached to the main body through the receiving portion. Since the main body is attached by adding the receiving portion for attaching to the main body to the suspension metal fitting, the suspension metal fitting itself becomes strong, and the main body can be attached more firmly.

According to a fourth aspect of the invention, a flange portion is formed outside the lower surface opening of the main body, and the hanging metal fitting is attached to the main body through the flange portion. The drain pan can be attached from the same direction, which improves the assembly workability.

According to a fifth aspect of the present invention, a holding portion for holding the flange portion formed outside the lower surface opening of the main body is provided on the lower side of the hanging metal fitting, and the flange portion is provided via the holding portion. The hanging metal fitting is configured to be fixed by sharing the screw that attaches the drain pan.The hanging metal fitting can be attached to the main body and drain pan at the same time, improving assembly workability and attaching with one screw. Therefore, the number of parts can be reduced.

The embodiment of the present invention will be described below with reference to FIG.
~ It demonstrates, referring to FIG. (Embodiment 1) As shown in FIGS. 1 and 2, a discharge adapter 4 is installed on the ceiling 1 and has an opening 2 on the lower surface and a discharge adapter 4 connected to a discharge duct 3 on one side. Forming a discharge opening 5 and a suction opening 8 of a suction adapter 7 connected to the suction duct 6 on the other side surface,
A blower 9 is provided inside to form a main body 10.

Further, a drain pan 13 is provided on the lower surface of the main body 10 so as to cover the opening 2 and has a drain hole 12 for connecting a drainage pipe 11 at the lowermost portion.

The upper side 14 having a substantially U-shaped cross section and projecting outward has a notch 18 for fixing the upper end to the ceiling surface 15 and inserting it into the hanging bolt 17 provided with the fixing nut 16. Then, the lower side 19 is provided with a screw hole 21 for a screw 20 which serves as a mounting portion for the drain pan 13, and the side face is provided with the main body 10
A screw hole 23 for a screw 22 attached to the
4 is formed.

In the above structure, when the main body 10 is fixed to the hanging bolt 17, the hanging metal fitting 2 is attached to the side surface of the main body 10.
4 is attached by a screw 22 inserted from the inside of the main body 10, and a drain pan 13 that covers the opening 2 on the lower surface of the main body 10 is attached.
Insert the screw 20 from below the main body 10 and
4 is screwed into the screw hole 21 provided in the mounting hole 4, the notch 18 provided in the upper side 14 of the hanging metal fitting 24 is fitted into the hanging bolt 17, and fixed by the fixing nut 16.

As described above, according to the duct ventilation fan of the first embodiment of the present invention, since the hanging metal fitting 24 is commonly attached to the main body 10 and the drain pan 13, the parts can be shared and the number of parts can be reduced. In addition, the hanging metal fitting 24 is firmly attached, and the hanging strength of the main body 10 is enhanced.

Further, since the hanging metal fitting 24 has a U-shaped cross section, the strength of the hanging metal fitting 24 itself is increased, and at the same time, the screw 20 is attached to the main body 10 and the drain pan 13 at two positions.
Will be retained by the screws 20 and 22
Even if either one of them is damaged by rust or the like, the main body 10 can be prevented from falling off the hanging fitting 24.

(Embodiment 2) As shown in FIG. 3, the receiving portion 2 protruding inwardly on the opposite side of the upper side 14 of the hanging metal fitting 24A.
5, the receiving portion 25 is provided with an insertion hole 27 for the screw 26, and the main body 10A is formed with a boss portion 28 with which the screw 26 is screwed.

In the above structure, when fixing the hanging metal fitting 24A to the main body 10A, the receiving portion 25 of the hanging metal fitting 24A is placed on the upper surface of the main body 10A, and the screw 26 is screwed into the boss portion 28 of the main body 10A through the insertion hole 27. Install together.

As described above, according to the duct ventilation fan of the second embodiment of the present invention, since the receiving portion 25 for mounting the main body 10A is added to the hanging metal fitting 24A, the hanging metal fitting 24A is further strengthened and the main metal fitting 10A of the main body 10A. Since the mounting becomes strong and the screw 26 can be tightened from the outside of the main body 10A, the assembling workability is also improved.

(Third Embodiment) As shown in FIG. 4, a flange portion 29 is formed outside the opening 2 on the lower surface of the main body 10B, and the insertion hole 30 for the screw 20 and the screw 22 are formed in the flange portion 29. And the insertion hole 31 of the.

Then, screw holes 21 and 23 into which the screws 20 and 22 are screwed are provided on the lower side 19A of the hanging metal fitting 24B.

In the above structure, when attaching the hanging metal fitting 24B, the screw 22 is inserted into the insertion hole 31 formed in the flange portion 29 of the main body 10B, and the screw 22 is screwed into the screw hole 23 of the hanging metal fitting 24B to make the main body 10B. On the hanging bracket 2
Install 4B.

Then, the drain pan 13 is attached by screwing the screw 20 through the insertion hole 30 of the flange portion 29 into the screw hole 21 of the hanging metal fitting 24B.

As described above, according to the duct ventilation fan of the third embodiment of the present invention, the hanging metal fitting 24B has the screws 20 and 22.
The screw 20 and the screw 22 can be tightened in the same direction, and the workability of tightening the screw is improved.

(Fourth Embodiment) As shown in FIG. 5, a flange portion 29A is formed outside the opening 2 on the lower surface of the main body 10C, and an insertion hole 30 for the screw 20 is formed in the flange portion 29A.
And a U-shaped holding portion 32 for holding the flange portion 29A is formed at the end of the lower side 19B of the hanging metal fitting 24C,
The holding portion 32 is provided with an insertion hole 33 for the screw 20, and the lower side 19
B has a screw hole 21 to be screwed into the screw 20.

In the above structure, when attaching the hanging metal fitting 24C, the flange portion 2 formed on the main body 10C is attached.
The holding portion 24C of the hanging metal fitting 24C is inserted into the 9A to temporarily hold the hanging metal fitting 24C, and the screw 20 for attaching the drain pan 13 is inserted into the insertion hole 33 of the nipping portion 32 and the flange portion 29A.
Through the insertion hole 30 and is screwed into the screw hole 21 provided in the lower side 19C of the hanging metal fitting 24C.

As described above, according to the duct ventilation fan of the fourth embodiment of the present invention, the hanging metal fitting 24C is temporarily held by the flange portion 29A formed on the main body 10C via the holding portion 32, and the screw for attaching the drain pan 13 is provided. Since the hanging metal fitting 24C is fixed to the main body 10C and the drain pan 13 by 20, the hanging strength of the main body 10C is strengthened, the number of screws tightened is reduced, and the assembling workability is improved.

[0032]

As is clear from the above embodiment,
A drain pan provided on the lower surface of the main body to which the hanging metal fittings fixed to the hanging bolts fixed to the ceiling surface are attached,
By sharing the hanging metal fittings that can be attached to the main body and attaching them with screws, the parts can be shared, the number of parts can be reduced, the main body and drain pan can be fixed at low cost, and the hanging strength of the main body is strong. A ventilation fan for a duct can be provided.

A box-like shape having an opening on the lower surface, and a side wall provided with a suction opening provided with a suction adapter connected to the suction duct and a discharge adapter connected to the discharge duct. To form a discharge opening,
There is a main body with a blower inside, a drain pan with a drain hole provided on the lower surface of this main body, and a cutout into which a hanging bolt is inserted on the upper side projecting outward with a U-shaped cross section. However, since the drain pan mounting portion is formed on the lower side and the hanging metal fitting that is attached to the side wall of the main body with a screw is provided, the hanging metal fitting itself becomes strong and is attached to the side wall of the main body. Since the metal fittings are held by the screws in two places, the main body and the drain pan, it is possible to prevent the main body from falling off the hanging metal fitting even if one screw is damaged.

Further, by forming a receiving portion projecting inward on the side opposite to the upper side of the hanging metal fitting, and attaching the hanging metal fitting to the main body through this receiving portion, the hanging metal fitting itself becomes strong and the main body can be mounted. You can be stronger.

Further, by forming a flange portion outside the opening of the lower surface of the main body and attaching the hanging metal fitting to the main body via this flange portion, the hanging metal fitting can be attached to the main body and the drain pan from the same direction, and the assembling can be performed. Workability is improved.

Further, a holding portion for holding the flange portion formed outside the lower opening of the main body is provided on the lower side of the hanging metal fitting, and the hanging metal fitting provided on the flange portion via the holding portion is attached to the drain pan. By fixing the screws in common, the hanging metal fittings can be attached to the main body and the drain pan at the same time, and the assembling workability is improved, and the attachment can be made with a single screw, which reduces the number of parts.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a duct ventilation fan according to a first embodiment of the present invention.

FIG. 2 is a side view showing the duct ventilation fan according to the first embodiment.

FIG. 3 is a cross-sectional view showing the duct ventilation fan according to the second embodiment.

FIG. 4 is a cross-sectional view showing the duct ventilation fan according to the third embodiment.

FIG. 5 is a sectional view showing the duct ventilation fan according to the fourth embodiment.

FIG. 6 is a cross-sectional view showing a conventional duct ventilation fan.

FIG. 7 is a side view showing the ventilation fan for the duct.

[Explanation of symbols]

 2 Opening 3 Discharge duct 4 Discharge adapter 5 Discharge opening 6 Suction duct 7 Suction adapter 8 Suction opening 9 Blower 10 Main body 10A Main body 10B Main body 10C Main body 12 Drain hole 13 Drain pan 14 Upper side 15 Ceiling surface 17 Hanging bolt 18 Notch 19 Lower side 19A Lower side 19B Lower side 20 Screw 21 Screw hole 22 Screw 23 Screw hole 24 Hanging metal fitting 24A Hanging metal fitting 24B Hanging metal fitting 24C Hanging metal fitting 25 Receiving part 29 Flange part 29A Flange part 32 Holding part

Claims (5)

[Claims] 1. A suspension fitting fixed to a suspension bolt fixed to a ceiling surface, a duct-connectable main body to which the suspension fitting is attached, and a drain pan provided on a lower surface of the main body. A ventilation fan for ducts that shares the hanging metal fittings that are attached to the main body and is attached with screws. 2. A box shape having an opening on the lower surface, and a side wall provided with a suction opening provided with a suction adapter connected to the suction duct and a discharge adapter connected to the discharge duct. A main body with a blower inside, a drain pan with a drain hole provided on the lower surface of the main body, and an upper side projecting outward with a U-shaped cross section. It has a notch for inserting the hanging bolt, and the drain pan mounting part is formed on the lower side,
The ventilation fan for a duct according to claim 1, further comprising: a hanging metal fitting attached to a side wall of the main body with a screw. 3. The ventilation fan for a duct according to claim 1, wherein a receiving portion projecting inward is formed on the opposite side of the upper side of the hanging metal fitting, and the hanging metal fitting is attached to the main body via the receiving portion. 4. The duct ventilation fan according to claim 1, wherein a flange is formed outside the lower opening of the main body, and the hanging metal fitting is attached to the main body via the flange. 5. A drain pan is attached to the holding metal fitting provided on the lower side of the hanging metal fitting for holding the flange portion formed outside the lower opening of the main body, and the flange fitting is provided on the flange material via the holding material. The ventilation fan for duct according to claim 1, wherein the screw is commonly used for fixing.