JPH074422Y2 - Ventilation fan for duct - Google Patents

Description

[Detailed Description of the Invention] Industrial application The present invention relates to a ventilation fan for a duct, which is mainly attached to the ceiling surface of a living room and is connected to a duct communicating with the outside to change air in the living room. .

2. Description of the Related Art Since a ventilation fan for a duct is used by embedding the main body behind the ceiling, it has been desired that the ventilation fan should be airtight so as to prevent air leakage, and easy to install and remove.

For this reason, in the conventional duct ventilation fan, as shown in FIGS. 3 and 4, for example, the blower 101 is built in, and the suction opening 102 and the discharge opening 103 are formed on the lower surface on the side of the living room. A box-shaped main body 104 having the same, a mounting plate 108 having a duct connecting portion 106 connected to the duct 105 and having an opening 107 communicating with the discharge opening 103, and the suction opening.
The main body 104 and the mounting plate 108 are provided with a makeup grill 109 which is attached to the main body 104 by covering 102 and the discharge opening of the main body 104 is provided in a guide portion 110 provided in an upper portion of the mounting plate 108 and extending obliquely downward. Projection 1 provided at the upper end of the side surface having the portion 103
By engaging 11 and tightening the lower part with a fan bolt 113, they were pressed against each other via a seal member 110 (for example, Japanese Utility Model Publication No. 60-27857).

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention As described above, the conventional duct ventilation fan has a structure in which the guide portion 110 provided on the upper portion of the mounting plate 108 is engaged with the protruding portion 111 provided on the upper end portion of the side surface of the main body 104. Therefore, the total height of the ventilation fan is increased by the height of the protruding portion 111, which is a problem from the recent tendency to reduce the space saving in the ceiling.

Further, since the mounting plate 108 and the main body 104 are pressed against each other via the seal material 110, there is no gap between them and the airtightness is improved, but on the other hand, the pressure contact causes the welded portion 111a for fixing the duct connecting portion 106. There is a problem that pressure is applied to widen a slight gap 112 between the duct connecting portion 106 and the mounting plate 118 between the and 111b, causing air leakage.

In consideration of the above problems, the first object of the present invention is to make it possible to suppress the total height of the ventilation fan to a low level even if the main body is easily attached and detached. The second purpose is to make it possible to reliably maintain the airtightness of the communicating portion between the discharge opening of the main body and the duct connecting portion even if the main body is easily attached and detached. is there.

Means for Solving the Problems To achieve the first object, a first means of the present invention is to connect a duct to a main body having a blower built therein, having a suction opening on a lower surface and a discharge opening on a side surface. And a mounting plate having an opening communicating with the discharge opening through a sealing member, and forming a guide portion extending obliquely downward at an upper portion of the mounting plate. When the main body moves upward, the recessed portion that engages the lower surface of the guide portion and slides along the lower surface in the mounting plate direction to press the main body and the mounting plate into pressure contact with each other via the seal member is provided. The ventilation fan for a duct is formed on the top surface of the main body.

A second means for achieving the second object is that a duct connecting portion connected to a duct is fixed via an annular seal member to communicate the duct connecting portion with a discharge opening provided on a side surface of the main body. A guide portion extending diagonally downward is formed in the upper portion of the mounting plate having an opening, and when the main body moves upward, it engages the lower surface of the guide portion and slides along the lower surface in the mounting plate direction. Then, a recess for pressing the main body and the mounting plate is formed in the upper portion of the main body, and the sealing member has a cylindrical portion extending through the opening of the mounting plate at the inner peripheral end thereof. A ventilation fan for a duct is formed so that the tip of the portion is in close contact with the peripheral edge of the discharge opening when the main body and the mounting plate are in pressure contact with each other.

With the configuration of the first means, when mounting the main body, when the main body is lifted upward so as to be inserted into the ceiling above, the lower surface of the guide portion of the mounting plate engages with the depression of the top surface of the main body, While moving along the mounting plate direction, the main body and the mounting plate come into pressure contact with each other, but the guide part of the mounting plate enters the recess on the top surface of the main body, so the overall height of the ventilation fan is almost no higher than the height of the main body. .

With the configuration of the second means, the main body and the mounting plate are pressed into contact with each other in the same manner as in the case of the first means. At the time of this pressure contact, the tip of the cylindrical portion of the seal member is aligned with the peripheral edge of the discharge opening of the main body. The close contact is maintained, and the airtightness of the communicating portion between the discharge opening and the duct connecting portion is maintained.

Embodiment First, an embodiment of the first means of the present invention will be described with reference to FIG. The box-shaped main body 1 has a blower 2 built-in, has a suction opening 3 on the lower surface that is the living room side and a discharge opening 4 on one side, and has a recess 5 near the one side on the top surface.
Is formed. A seal member 11 is attached around the discharge opening 4. Then, a guide portion 6 extending obliquely downward to enter and engage with the recess portion 5 at the upper portion.
And a duct connecting portion 9 to which a duct 8 is connected, and a mounting plate 10 provided with an opening 7 at a position where the duct connecting portion 9 is fixed is a discharge opening through the seal member 11. The portion 3 and the duct connecting portion 9 are communicated with each other and pressed against the main body 1. Further, the lower portion of the main body 1 and the mounting plate 10 are fastened and fixed with a round bolt 12. The suction opening 3 of the main body 1 is covered with a makeup grill 13 having a vent from the inside.

The attachment of the duct ventilation fan in the above configuration is performed as follows.

Field edge 16 provided on the periphery of the ceiling opening 15 formed on the ceiling plate 14.
After fixing the mounting plate 10 to the and connecting the duct 8 to the duct connecting part 9, when the main body 1 is inserted from the ceiling opening 15 and pushed up, the upper edge of the recess 5 on the top surface is the guide part of the mounting plate 10. When engaged with the lower surface of 6 and further pushed up, the recess 5 moves in the direction of the mounting plate 10 along the lower surface thereof, and the main body 1 is mounted on the mounting plate.
It is pressed against 10 via a seal member 11. Then, the main body 1 and the mounting plate 10 are tightened with a round bolt 12 at the lower portion, and then the main body 1 is fixed to the field edge 16 from below. Finally, the makeup grill 13 is attached and the installation work is completed. Also,
When the main body 1 is to be removed for repair or replacement, it can be easily removed by performing the reverse order of the above installation.

As described above, according to this embodiment, even if the body 1 is easily attached and detached, the body 1 and the mounting plate
Since the engaging portion at the upper portion of 10 is located lower than the top surface of the main body 1, the overall height of the ventilation fan can be kept low.

Next, an embodiment of the second means of the present invention will be described with reference to FIG.

In FIG. 2, the same components as those of the first embodiment in FIG. 1 are designated by the same reference numerals,
The description is omitted.

In the present embodiment, the main body 1 has no seal member attached around the discharge opening 4, and the annular seal member 17 is interposed when the duct connecting portion 9 is fixed to the mounting plate 10.
The seal member 17 has a cylindrical portion 17a whose inner peripheral side end portion extends toward the side opposite to the duct connection portion 9 side.

In the above structure, when the main body 1 is mounted on the ceiling, the engagement of the guide plate 6 of the mounting plate 10 at the upper portion is performed in the same manner as in the embodiment by the first means. When the main body 1 and the mounting plate 10 are brought into pressure contact with each other, the tip of the cylindrical portion 17a of the seal member 17 comes into close contact with the peripheral edge of the discharge opening 4 of the main body 1. Then, the main body 1 and the mounting plate 10 are tightened and fixed at the lower portion with a round bolt 12 at this time.
Even if a slight pressure is applied between the duct 10 and the duct connecting portion 9, since the seal member 17 is interposed, the airtightness of this portion is maintained.

As described above, according to the present embodiment, even if the main body 1 is easily attached and detached, the airtightness of the communication portion between the discharge opening 4 of the main body 1 and the duct connection portion is ensured. Become.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, in order to easily attach and detach the main body,
Even if the mounting plate having the duct connection part is attached to the ceiling opening in advance and then the main body is inserted and the upper parts of the respective parts are engaged, the guide part of the mounting plate enters the recess of the main body and engages. Since it fits, the overall height of the ventilation fan is almost no higher than the height of the main body, which is preferable to the recent tendency to save space in the ceiling.

Further, since the airtightness of the communicating portion between the discharge opening of the main body and the duct connecting portion is ensured, it is possible to obtain the effect of reliably preventing air leakage in the ceiling.

[Brief description of drawings]

FIG. 1 is a sectional view showing the installation of a duct ventilation fan showing an embodiment of the first means of the present invention. FIG. 2 is a sectional view showing the installation of a duct ventilation fan showing an embodiment of the second means of the present invention. FIG. 4 is a sectional view showing the installation of a conventional duct ventilation fan, and FIG. 4 is a perspective view of a mounting plate of the duct ventilation fan. 1 ... Main body, 2 ... Blower, 3 ... Suction opening, 4 ...
… Discharge opening, 5 …… Dimple, 6 …… Guide, 7 ...
… Aperture, 8 …… duct, 9 …… duct connection, 10 ……
Mounting plate, 11 ... Seal member, 17 ... Seal member, 17a ...
… Cylindrical part.

Claims (2)

[Scope of utility model registration request] 1. A main body having a blower built therein and having a suction opening on a lower surface and a discharge opening on a side surface, and a duct connecting portion connected to a duct, and communicating with the discharge opening via a seal member. A mounting plate having an opening portion for forming a guide portion extending obliquely downward at an upper portion of the mounting plate, and engaging with a lower surface of the guide portion when the main body moves upward. A ventilation fan for a duct, which is formed along the lower surface in the direction of the mounting plate to form a recess on the top surface of the main body to press the main body and the mounting plate into pressure contact with each other via the sealing member. 2. A main body having a blower therein and having a suction opening on a lower surface and a discharge opening on a side surface, and a duct connecting portion fixed to a duct via an annular seal member. A guide plate having an opening communicating with the discharge opening, a guide portion extending obliquely downward at an upper portion of the mount plate, and the guide portion when the main body moves upward. A recess is formed in the upper portion of the main body that engages with the lower surface of the main body and moves in the direction of the mounting plate along the lower surface to press the main body and the mounting plate into contact with each other. A ventilation fan for a duct, comprising a cylindrical portion extending through an opening of the mounting plate, the distal end of the cylindrical portion being in close contact with the peripheral edge of the discharge opening when the main body and the mounting plate are pressed against each other.