JP3140350B2 - 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 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 ventilation fan for a duct will be described with reference to FIGS.

[0003] As shown in the figure, a discharge opening 105 is provided on a ceiling 101, has an opening 102 on the lower surface, and has a discharge adapter 104 for connecting a discharge duct 103 on one side. And suction duct 1 on the other side
06 is provided with a suction opening 108 provided with a suction adapter 107 for communicating and connecting the opening 06 with a notch 111 fixed to a suspension bolt 110 whose upper end is fixed to a ceiling surface 109 on the outside of the side surface. A main body 114 having a hanging metal fitting 112 and a blower 113 provided therein;
4 and a drain pan 117 provided with a drain hole 116 for connecting a drainage pipe 115 at the bottom, and a hanging metal fitting 112 is connected to the main body 114 through a main body side surface 118. 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 below the main body 114 via the flange portion 120. Was configured as follows.

In the above configuration, in order to fix the drain pan 117 to the main body 114, the flange 120
A nut 121 is attached to the back surface of the main body 114 by welding or the like, and a screw 122
Was fixed by.

Further, in order to fix the suspension fitting 112 to the main body 114, the hanging fitting 112 is fixed from the inside of the main body 114 through the main body side surface 118 by a screw 119.

[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. Therefore, the number of parts increases, the number of work steps for welding the nut 121 increases, and the cost increases.
A screw 119 is used to fix the suspension fitting 112 to the main body 114.
There is a problem that the main body 114 is detached from the hanging fitting 112 when the screw comes off due to rust or the like.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a ventilation fan for a duct in which a main body and a drain pan can be attached at a low cost and a hanging strength of the main body is increased.

[0008]

In the duct ventilation fan according to the present invention, a drain pan provided on a lower surface of a main body to which a hanging metal fixed to a hanging bolt fixed to a ceiling surface is mounted is attached to the main body. They are shared and mounted with screws.

According to the present invention, it is possible to provide a ventilation fan for a duct in which the mounting of the main body and the drain pan can be performed at low cost and the hanging strength of the main body can be increased.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention relates to 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 this main body. A drain pan provided on the lower surface of the main body, the drain pan is shared with a hanging bracket attached to the main body, and is configured to be attached with a screw,
The hanging fitting is screwed in common with the main body and the drain pan, so that the number of parts is reduced, the hanging fitting is firmly attached, and the hanging strength of the main body is increased.

According to a second aspect of the present invention, a suction opening provided with a suction adapter connected to a suction duct on a side wall and a discharge duct are provided. A discharge opening provided with a discharge adapter to be provided, a main body provided with a blower inside, a drain pan having a drain hole provided on the lower surface of the main body, a cross section substantially U-shaped and The upper side protruding toward has a cutout portion for inserting a hanging bolt, the lower side is provided with a mounting portion for the drain pan, and a hanging metal fitting is attached to a side wall of the main body by a screw. Since the bracket has a substantially U-shaped cross section, the hanging bracket itself becomes strong, and since it is attached to the side wall of the main body, the hanging bracket is held by two screws on the main body and the drain pan. 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 protruding inward is formed on a side opposite to an upper side of the hanging metal, and the hanging metal is attached to the main body via the receiving portion. Since the receiving part for attaching to the main body is added to the hanging metal fitting, and the main body is attached, the hanging metal fitting itself becomes strong, and the mounting of the main body can be further strengthened.

According to a fourth aspect of the present invention, a flange is formed outside the lower opening of the main body, and the hanging metal is attached to the main body through the flange. Mounting to the drain pan can be performed from the same direction, and assembling workability is improved.

According to a fifth aspect of the present invention, the holding portion for holding the flange formed outside the lower surface opening of the main body is provided on the lower side of the suspension fitting, and the holding portion is provided on the flange via the holding portion. The hanging bracket is configured so that the screw for attaching the drain pan is shared and fixed.The hanging bracket can be attached to the main body and the drain pan at the same time, improving the workability of assembly and being able to attach with one screw. As a result, the number of parts can be reduced.

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. (Embodiment 1) As shown in FIG. 1 and FIG. 2, a discharge adapter 4 which is installed in the back of a ceiling 1, has an opening 2 on the lower surface, and is connected to a discharge duct 3 on one side is provided. 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.

On the lower surface of the main body 10, there is provided a drain pan 13 having a shape covering the opening 2 and having a drain hole 12 formed at the lowermost part for connecting a drain pipe 11.

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 a suspension bolt 17 provided with a fixing nut 16. The lower side 19 is provided with a screw hole 21 of a screw 20 to be a mounting portion of the drain pan 13, and the main body 10 is provided on a side surface.
A screw hole 23 for a screw 22 to be attached to the
4 is formed.

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

As described above, according to the duct ventilation fan of the first embodiment of the present invention, since the hanging bracket 24 is shared and attached to the main body 10 and the drain pan 13, the parts can be shared and the number of parts can be reduced. As a result, the suspension fitting 24 is firmly attached, and the suspension strength of the main body 10 is increased.

Further, since the cross section of the hanging metal fitting 24 is formed in a U-shape, the strength of the hanging metal fitting 24 itself is increased, and screws 20 are provided at two places of the main body 10 and the drain pan 13.
And 22 are held by screws 20 and 22
Even if one of them is damaged due to rust or the like, it is possible to prevent the main body 10 from falling off from the hanging bracket 24.

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

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

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

(Embodiment 3) As shown in FIG. 4, a flange 29 is formed outside the opening 2 on the lower surface of the main body 10B, and an insertion hole 30 for the screw 20 and a screw 22 are formed in the flange 29. Are provided.

The lower side 19A of the hanging bracket 24B is provided with screw holes 21 and 23 into which the screws 20 and 22 are screwed.

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. Hanging bracket 2
Attach 4B.

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 suspension fitting 24B.

As described above, according to the duct ventilation fan according to the third embodiment of the present invention, the hanging fitting 24B is
, The hanging strength of the main body 10B is increased, and the screw 20 and the screw 22 can be tightened from the same direction, so that the screw tightening workability is improved.

(Embodiment 4) As shown in FIG. 5, a flange 29A is formed outside the opening 2 on the lower surface of the main body 10C, and a through hole 30 for the screw 20 is formed in the flange 29A.
Is formed at the end of the lower side 19B of the hanging bracket 24C to form a U-shaped holding portion 32 that sandwiches the flange portion 29A,
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 with the screw 20.

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

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 fitting 24C is fixed to the main body 10C and the drain pan 13 by the 20, the hanging strength of the main body 10C is strengthened, the number of screws 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 bracket fixed to the hanging bolt fixed to the ceiling surface is attached,
By sharing the hanging bracket attached to the main unit and attaching it with screws, the parts can be shared, the number of parts can be reduced, the main unit and the drain pan can be fixed at low cost, and the hanging strength of the main unit is strong. Can be provided.

A box-like shape having an opening on the lower surface, a suction opening provided on the side wall of a suction adapter connected to the suction duct, and a discharge adapter provided on the side of the discharge duct. Forming a discharge opening that is
It has a main body with a blower inside, a drain pan with a drain hole provided on the lower surface of the main body, and a cutout for inserting a suspension bolt on the upper side that has a substantially U-shaped cross section and protrudes outward. Since the lower side is provided with a mounting portion for the drain pan and provided with a hanging metal fitting attached to a side wall of the main body with a screw, the hanging metal fitting itself becomes strong, and is attached to the side wall of the main body. The metal fittings are held by screws at two places of the main body and the drain pan, so that even if one screw is damaged, the main body can be prevented from dropping from the hanging metal fittings.

Further, 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 through this receiving part, so that the hanging metal fitting itself becomes strong, and the mounting of the main body can be performed. Can be more robust.

Further, a flange is formed outside the lower opening of the main body, and the hanging metal is attached to the main body through the flange, so that the hanging metal can be attached to the main body and the drain pan from the same direction. Workability is improved.

Further, a holding portion for holding a flange formed outside the lower opening of the lower surface of the main body is provided on the lower side of the hanging fitting, and the hanging fitting provided on the flange via the holding portion is attached with a drain pan. By fixing the screws in common, the hanging bracket can be attached to the main body and the drain pan at the same time, so that the assembling workability is improved, and the hanging bracket can be attached with one screw, and the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a ventilation fan for a duct 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 sectional view showing a ventilation fan for a duct according to the second embodiment.

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

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

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

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 Top 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 fitting 24A Hanging fitting 24B Hanging fitting 24C Hanging fitting 25 Receiving part 29 Flange part 29A Flange part 32 Holding part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 7/10 101 F24F 7/06 F24F 7/08

Claims (5)

(57) [Claims] 1. A hanging fixture fixed to a suspension bolt fixed to a ceiling surface, a duct-connectable main body to which the hanging fixture is attached, and a drain pan provided on a lower surface of the main body. A ventilation fan for ducts that shares the hanging bracket attached to the main unit and is configured to be attached with screws. 2. A box-like shape having an opening on a lower surface, a suction opening provided on a side wall of a suction adapter connected to a suction duct, and a discharge adapter provided on a side of a discharge duct. A main body having a discharge opening formed therein and a blower provided therein, a drain pan having a drain hole provided on the lower surface of the main body, and an upper side projecting outward with a substantially U-shaped cross section. It has a notch for inserting a suspension bolt, and a lower side is formed with a mounting portion for the drain pan,
The ventilation fan for a duct according to claim 1, further comprising a hanging bracket attached to a side wall of the main body by a screw. 3. The ventilation fan for a duct according to claim 1, wherein a receiving portion protruding inward is formed on a side opposite to an upper side of the hanging metal, and the hanging metal is attached to the main body via the receiving portion. 4. The ventilation fan for a duct according to claim 1, wherein a flange is formed outside the lower surface opening of the main body, and the hanging fitting is attached to the main body via the flange. 5. A holding portion for holding a flange formed outside a lower opening of the lower surface of the main body is provided on a lower side of the hanging metal fitting, and the hanging metal provided on the flange through the holding portion is attached to a drain pan. The ventilation fan for a duct according to claim 1, wherein the ventilation fan is configured to be fixed by sharing a screw.