JPH08320141A - Ventilation fan for duct - Google Patents

Abstract

PURPOSE: To provide a ventilation fan for a duel in which material expenditure is low and a facility such as welding can be eliminated. CONSTITUTION: A blower 7 is arranged at a top plate 5 formed with an engaging projection 4 to close a top surface opening of a side wall frame 3 formed in a U-shape to constitute a fan device 8. The fan device 8 is removably arranged at the top surface opening of the side wail frame 3 with screws 6 through a top plate 5. There is provided a duct connection port and it is coupled to an adapter device having an engaging convave part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct ventilation fan used by being connected to a duct communicating with the outside.

[0002]

2. Description of the Related Art In recent years, with the spread of ventilation fans for ducts, which have a duct communicating with the outside in the ceiling, a ventilation fan body is installed on the ceiling surface, and are connected to the duct for ventilation, the material cost is low and the manufacturing cost is low. There is an increasing demand for duct ventilation fans that can be downsized and easily maintained.

Conventionally, as a ventilation fan of this type, the actual fan 3-1
There is a ceiling ventilation fan having a configuration as disclosed in Japanese Patent No. 7164. The configuration will be described below with reference to FIGS. 8 to 10.

As shown in the figure, the main body frame 101 is integrally provided with first side walls 105 and 106 which have an exhaust port 102 and abut on a mounting plate 103 having a duct connection port body 103a, and each side wall 104. , 105, 106 are provided with a joining flange 107 at the upper edge portion thereof, and a main body portion 109 in which an engaging convex portion 108 is formed on the joining flange 107 of the first side wall 104.
And a fourth side wall 110 opposed to the first side wall 104 and an upper wall 111 connected to the upper side of the fourth side wall 110, which are integrally provided, and the connecting flange 107 of each of the side walls 104, 105 and 106.
And the supplementary portion 112 integrated by spot welding or the like.

Then, a part of the ceiling 113 is opened, the mounting plate 103 is mounted on the field edge 114, and the blower 115 is installed inside.
The main body frame 101 provided with the above is inserted into the ceiling 113 through the ceiling opening 116, and the engaging convex portion 108 of the main body frame 101 is engaged with the engaging concave portion 117 of the mounting plate 103 so that the main body frame 101 becomes the field edge 114. It was installed.

[0006]

In the structure of such a conventional ventilation fan for a ceiling, since the main body frame 101 is manufactured by being divided into the main body portion 109 and the supplementary portion 112, the mold can be downsized. However, the main body portion 109 and the supplementary portion 112 are integrated by spot welding or the like, and the first side wall 104 having the exhaust port 102 facing the mounting plate 103 is required, and the material cost is high. However, there is a problem that equipment for spot welding is required.

Further, the mounting plate 103 and the main body frame 101 are provided with engaging recesses 116 provided in the upper part of the mounting plate 103, and the main body frame 10.
Since they are coupled only by the engagement with the engaging protrusions 108 provided on the first side, there is a problem in that the degree of close contact of the main body frame 101 with the mounting plate 103 is poor and the airtightness cannot be secured.

Further, since the upper wall 111 cannot be removed, there is a problem that the blower 115 is not easily attached and detached at the time of maintenance, and it is difficult to connect to the power supply wire, resulting in poor workability.

SUMMARY OF THE INVENTION The first object of the present invention is to solve the above problems and to provide a ventilation fan for a duct which has a low material cost and does not require equipment such as welding.

A second object is to increase strength and ensure airtightness.

A third object is to facilitate connection with a power supply wire and improve workability.

[0012]

In order to achieve the first object, the duct ventilation fan according to the present invention has a first means, a side wall frame formed in a U-shape, and a top surface of the side wall frame. A fan unit in which a blower disposed in the side wall frame is provided on a top plate having a shape that closes the side opening and an upward engaging protrusion is formed at one end, and a main body including the side wall frame and the fan unit. A main body having a duct connection opening that communicates with the blower in a shape that closes the side wall side opening of the main body, and an engaging concave portion that engages with an engaging convex portion of the main body is provided on the upper portion, and is detachably coupled to the main body The above-mentioned fan unit is detachably attached to the top surface side opening of the side wall frame by a screw or the like via a top plate.

Further, in order to achieve the second object, the second means is an engaging member which is vertically formed on the wall surface of the side wall frame in which the side wall side opening is formed, and is slidable on the engaging member. The adapter unit is provided with an engaging portion that engages with.

Further, in order to achieve the third object, the third means has a structure in which a power supply connection terminal block is provided on the upper surface side of the top plate of the fan unit.

[0015]

According to the present invention, by the structure of the above-mentioned first means, the main body is formed by the side wall frame and the fan unit which are formed in a U-shape, and the side wall side opening has an adapter unit having a duct connection port. Since they face each other, the material for the opening of the side wall frame becomes unnecessary, and the material for forming the main body (box) can be reduced.

Further, since the fan unit is detachably attached to the side wall frame with screws through the top plate, equipment such as welding for forming the main body is not required.

Further, according to the structure of the second means, the side wall frame as the main body is reinforced by the engagement element, and the main body and the adapter unit are coupled by the engagement of the engagement element and the engagement portion. Ventilation between units is enhanced.

Further, according to the structure of the third means, the power supply wire can be connected from the outside in the completed state of the main body in which the fan unit is incorporated in the side wall frame, and the fan unit can be detached from the main body even after the main body is installed. The workability is improved because the wires can be removed and connected.

[0019]

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

As shown in the figure, an inwardly projecting flange 1 is formed in an upper portion and a front portion in a U shape, and a body mounting piece 2 projecting outward is provided at a lower portion to form a side wall frame 3. Formed, the end portion of one side is bent upward so as to close the top opening of the side wall frame 3, and the engaging convex portion 4 is formed, and the remaining three sides are bent downward to reinforce and form the top plate 5. The top plate 5 is detachably attached to the upper flange of the side wall frame 3 with screws 6.

A fan unit 8 is attached to the top plate 5 and is blown from the lower surface opening of the side wall frame 3 and discharged to the side wall side opening of the side wall frame 3, and the fan unit 8 is arranged in the side wall frame 3. Is formed together with the top plate 5, and the side wall frame 3 and the fan unit 8 form a main body 9.

The top plate 5 of the main body 9 is provided on the upper portion of the side wall frame 3 having a duct connection port 10 and closing the side wall side opening of the side wall frame 3.
An engaging concave portion 11 that engages with the engaging convex portion 4 provided on the right side is provided, and a guide piece 12 that abuts on the outer surface of the side wall frame 3 that forms a side wall side opening on the left and right sides Attached piece 1
3 is provided to form the adapter unit 14.

When the ventilation fan is installed in the above structure, a part of the ceiling 15 is opened, and the attachment piece 13 is arranged so that the adapter unit 14 is arranged in the field edge 16 in the ceiling 15.
A duct (not shown) that is attached via the pipe and communicates with the outdoors is connected to the duct connection port 10.

Then, the main body 9 is inserted into the ceiling 15 through the ceiling opening, and the guide piece 12 of the adapter unit 14 is inserted.
Sliding in between, the engaging projections 4 formed on the top plate 5 attached to the main body 9 are engaged with the engaging recesses 11 of the adapter unit 14, and the main body 9 is attached to the ceiling 15 by the main body attaching piece 2. It will be possible.

As described above, according to the duct ventilation fan of the first embodiment of the present invention, the side wall frame 3 forming the main body 9 is formed in a U shape having the side wall side opening, and the side wall side opening is formed. Since the adapter unit 14 faces each other, the material forming one side wall is saved and the material cost is reduced, and the fan unit 14 is attached to the side wall frame 3 with the screw 6 through the top plate 5, so that the main body 9 is attached. Welding is not necessary to form it, and the equipment required for welding is not required, which reduces the equipment cost.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in the drawing, a protrusion 16 is formed in a vertical direction on the outer wall surface of the side wall frame 3A in which the side wall side opening is formed, and the guide piece 12 of the adapter unit 14A is provided with the side wall frame 3A. The concave engaging portion 1 with which the formed engagement element 16 engages
7 is provided.

In the above structure, the adapter unit 1
When the main body 9A is coupled to the 4A, the engaging portion 17 provided on the adapter unit 14A is aligned with the engaging member 16 formed on the main body 9A, and the main body 9A is slid upward, thereby the engaging portion of the adapter unit 14A. 1 to 17
6 is engaged with the main body 9 on the inner surface of the adapter unit 14A.
The end face forming the side wall side opening of the side wall frame 3A forming A comes into contact with the engaging concave portion 11 of the adapter unit 14A, the engaging convex portion 4 of the main body 9A engages, and the main body 9A closely contacts the adapter unit 14A. Then combined.

As described above, according to the duct ventilation fan of the second embodiment of the present invention, the engaging portion 17 provided on the adapter unit 14A is engaged with the engaging element 16 formed on the main body 9A, so that the adapter unit 14A is engaged. Since the main body 9A is tightly engaged, the airtightness between the adapter unit 14A and the main body 9A is ensured, ventilation air is prevented from leaking into the ceiling, and the engaging element 16 and the engaging portion 17 are attached to the main body 9A.
And functions to reinforce the adapter unit 14A.

In the second embodiment, the main body 9A is provided with the protruding engaging member 16 and the adapter unit 14A is provided with the engaging portion 17, but the main body side is provided with the concave engaging portion.
It goes without saying that a protruding engagement element may be provided on the adapter unit side.

Next, the third embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIG. The same parts as those of the first and second embodiments are designated by the same reference numerals and detailed description thereof will be omitted.

As shown in the figure, a power supply connection terminal block 1 for connecting a power supply wire 18 to the upper surface of the top plate 5 of the fan unit 8A.
9 is provided.

In the above structure, a main body 9B formed by attaching the fan unit 8A to the side wall frame 3 with the screw 6
Adapter unit 1 installed inside the ceiling (not shown)
After connecting and attaching to 4A, the power supply electric wire 18 is connected to the power supply connection terminal block 19 in the ceiling, and it installs.

Further, at the time of construction, the fan unit 8
After connecting only the side wall frame 3 in which A is not incorporated to the adapter unit 14A and mounting it on the ceiling, the power supply wire 18
Through the inside of the side wall frame 3 to the indoor side, and after connecting the power supply wire 18 to the power supply connection terminal block 19 provided on the top plate 5 of the fan unit 8A inside the side wall frame 3, inside the side wall frame 3 attached to the ceiling. Insert the fan unit 8A and insert the top plate 5
The fan unit 8A can be incorporated into the side wall frame 3 by means of the screw 6 and the main body 9B can be formed.

After the duct ventilation fan is installed, when the fan unit 8A is to be maintained due to a malfunction or the like, the side wall frame 3 of the main body 9B is left installed on the ceiling and only the fan unit 8A is removed for maintenance. You can

As described above, according to the duct ventilation fan of the third embodiment of the present invention, since the power supply terminal block 19 for connecting the power supply wire 18 is provided on the upper surface of the top plate 5 of the fan unit 8A, the power supply wire 18 is provided. Can be connected to the outside of the main body 9B, and the power supply wire 18 can be connected to the fan unit 8A via the power supply connection terminal block 19 on the indoor side, thus improving workability.

[0037]

As is apparent from the above embodiments, according to the present invention, a side wall frame formed in a U-shape and a shape that closes the opening on the top surface side of this side wall frame and has an upward facing end. A fan unit in which a blower disposed in the side wall frame is provided on a ceiling plate having a fitting convex portion, a main body including the side wall frame and the fan unit, and a shape for closing a side wall side opening of the main body. A duct connection opening communicating with the blower is provided, an engagement concave portion that engages with an engagement convex portion of the main body is provided at an upper portion, and an adapter unit that is detachably coupled to the main body is provided, and the side wall frame Since the fan unit is detachably attached to the opening of the top surface via the top plate with a screw or the like, it is possible to provide a duct ventilation fan that is low in material cost and does not require equipment such as welding.

Further, the adapter unit is provided with the engaging element formed in the longitudinal direction on the wall surface of the side wall frame in which the side wall side opening is formed, and the engaging section slidably engaging with the engaging element. The main body provided with the side wall frame is tightly joined to the adapter unit to ensure airtightness, and the main body and the adapter unit are reinforced by the engaging element and the engaging portion to enhance the strength.

Further, since the power supply connection terminal block is provided on the upper surface side of the top plate of the fan unit, the connection with the power supply wire is facilitated and the workability is improved.

[Brief description of drawings]

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

FIG. 2 is a perspective view of the main body of the duct ventilation fan of the first embodiment.

FIG. 3 is a cross-sectional view showing a state in which the duct ventilation fan of the first embodiment is attached to the ceiling.

FIG. 4 is a perspective view showing the duct ventilation fan of the second embodiment before being joined.

FIG. 5 is a sectional view showing a state when the duct ventilation fan of the second embodiment is joined.

FIG. 6 is a perspective view of the main body of the duct ventilation fan of the third embodiment.

FIG. 7 is a perspective view showing a state in which a fan unit is taken out from the main body of the duct ventilation fan of the third embodiment.

FIG. 8 is an exploded perspective view of a body frame of a conventional duct ventilation fan.

FIG. 9 is an exploded perspective view of a body frame and a handling plate of the ventilation fan for the duct.

FIG. 10 is a sectional view showing a state in which the ventilation fan for the duct is attached to the ceiling.

[Explanation of symbols]

 3 Side wall frame 3A Side wall frame 4 Engagement convex part 5 Top plate 6 Screw 7 Blower 8 Fan unit 8A Fan unit 9 Main body 9A Main body 9B Main body 10 Duct connection port 11 Engagement recess 14 Adapter unit 14A Adapter unit 16 Engagement element 17 Engagement Part 19 Power connection terminal block

Claims (3)

[Claims] 1. A side wall frame in which a box-shaped main body having an opening on the lower surface is formed in a U shape, and an upwardly projecting engagement protrusion is formed at one end in a shape that closes the opening on the top surface side of the side wall frame. A main body composed of a fan unit provided with a blower arranged in the side wall frame on the top plate, and a duct connection port communicating with the blower in a shape closing the side wall side opening of the main body, An engaging concave portion that engages with an engaging convex portion of the main body is provided on the upper portion, and an adapter unit that is detachably coupled to the main body is provided, and a screw or the like is provided in the top surface side opening portion of the side wall frame through a top plate. A ventilation fan for ducts configured to detachably attach the fan unit. 2. An adapter unit is provided with an engaging element formed in a vertical direction on a wall surface of a side wall frame in which a side wall side opening is formed, and an engaging section slidably engaged with the engaging element. Ventilation fan for duct according to 1. 3. The ventilation fan for a duct according to claim 1, wherein a power supply connection terminal block is provided on the upper surface side of the top plate of the fan unit.