JPH0230419B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a duct ventilation fan that is attached to a ceiling and ventilates indoor air.

(2) Conventional technology Traditionally, duct ventilation fans have a fan device installed inside the outer box, and a ventilation fan with an exhaust port on the side is installed behind the ceiling through an opening formed in the ceiling. A structure in which only the board is exposed is common, and an exhaust pipe is connected in the ceiling above to the exhaust port provided on the side of the ventilation fan outer box, thereby directing indoor air to the outside through the ventilation fan and exhaust pipe. They are served in a way that allows them to be drained. However, with this method, the work to install the ventilation fan outer box must be done from the indoor side through the opening in the ceiling, and then the work to connect the exhaust pipe and the exhaust port of the ventilation fan outer box must be performed under the ceiling, which generally requires installation and removal work. This was troublesome, and maintenance and inspection were also difficult. In particular, in the current state of housing construction where the space (height) under the attic is becoming extremely narrow as a recent trend in housing design, piping in the attic is installed first, and ventilation fans for the ducts are installed at the end of the construction. As a result, the above-mentioned drawbacks become an increasingly serious problem.

(3) Purpose of the invention The present invention has been made focusing on the above points.
A duct ventilation fan with an exhaust port installed in the outer box and an exhaust pipe mounting lid that can be operated from inside the outer box to secure the exhaust pipe, making it possible to connect the exhaust port and exhaust pipe from the indoor side. The purpose is to provide the following.

(4) Embodiment of the Invention First, a first embodiment of the invention will be described with reference to FIGS. 1 to 4. Figures 1 and 2
In the figure, 1 is an outer box, which consists of a casing with an opening on the bottom surface, and the four sides of the lower part are bent outward at 90 degrees to make mounting holes 2.
A mounting portion 3 is formed. Approximately in the center of the top of the outer box 1 is a hole 5 for accommodating the motor 4, and a fan device 7 consisting of the motor 4 and a fan 6 is mounted inside the outer box 1 with screws 8.
In addition, a rectangular square hole 9 reaching the side surface is formed on the right side of the top as shown in FIG. These square holes 9 and round holes 10 form an exhaust port 11. Further, a sealing member 12 is installed inside the round hole 10, and an exhaust pipe, which will be described later, is placed therein. Then, near the right side of the middle part of the square hole 9, there are position regulating pieces 13, 13 facing each other from both sides and parallel to the side surface.
stands out. Furthermore, on the outside of the square hole 9, there are approximately two-shaped long holes 15, 15 that pivotally support one end of the exhaust pipe mounting lid 14, which will be described later, on one side, and the other end of the exhaust pipe mounting lid 14 is fixed on the other side. It has mounting holes 16, 16 used when In addition, a sealing member 17 is attached to the outer surface of the top of the outer box 1, and has a long hole 15 on the outer periphery of the square hole 9 and a hole corresponding to the mounting hole 16.
The exhaust port 11, the seal members 12 and 17, and the position regulating piece 13 constitute an exhaust pipe mounting seat 18. As shown in FIG. 3, the exhaust pipe mounting lid 14 has a substantially semicircular body portion 19 having approximately the same diameter as the round hole 10 of the outer box 1, and one longitudinal end of this body portion 19 (the third The left side in the figure) is closed, the other end is open, and a sealing member 20 is attached to the inside of the open end. Further, one radial end of the body portion 19 is bent at a substantially right angle to form a mounting portion 22 having a mounting screw hole 21, and the other end is formed with a tongue piece 23 corresponding to the elongated hole 15. As shown in the figure, the long hole 1
5 and 15 and is formed into a circular shape. Therefore, the exhaust pipe mounting lid 14 is not separated from the outer box 1 and is rotatably mounted around the tongue piece 23. Also, on the inside of the body 19, near the tongue piece 23, there is a knob 24 for rotating the exhaust pipe mounting cover 14.
is provided. The exhaust pipe, which will be described later, is placed on the exhaust pipe mounting seat 18, the exhaust pipe mounting lid 14 is rotated and mounted so as to cover the exhaust pipe, and the screw 2
By tightening the mounting portion 22 of the exhaust pipe mounting lid 14 at step 5, the exhaust pipe is airtightly clamped. Also,
As shown in FIG. 1, a plurality of L-shaped cross-sectional metal fittings are fixed to the inside of the lower opening of the outer box 1 by welding or the like to form a lid mounting portion 26. Reference numeral 27 denotes a lid having an intake port 28 corresponding to the fan device 6, and is attached to the mounting portion 26 of the outer box 1 with screws 29. Reference numeral 30 denotes a decorative frame having a plurality of intake holes 30a attached to cover the lower opening of the outer case 1, and a screw 3 is attached to a fixing fitting 31 fixed to the lid body 27.
It is attached by 2. 33 is an opening corresponding to the outer box 1 formed in the ceiling 34, 35 is a beam, 3
6 is a mounting screw, and 37 is an exhaust pipe arranged horizontally in the ceiling.

Next, the operation of the above configuration will be explained. As explained above, by the time the ventilation fan is installed, the piping work behind the ceiling, that is, the installation work of the exhaust pipe 37 has already been completed. Decorative frame 30 prior to installing ventilation fan
Then, remove the lid 27, rotate the exhaust pipe mounting lid 14 approximately 90 degrees from the mounting position, and place it in the position indicated by the dashed-dotted line in FIG. 4. Next, the exhaust pipe 37 and the exhaust pipe mounting seat 18 are aligned while the outer box 1 is inserted into the ceiling opening 33, and the outer box 1 is attached to the ceiling with the mounting screws 36. At this time, the insertion length of the exhaust pipe 37 is regulated by the position regulating piece 13. Then, hold the knob 24 and rotate the exhaust pipe mounting lid 14 to cover the exhaust pipe 37, and tighten the screw 25 to cover the exhaust pipe mounting lid 1.
The mounting portion 22 of No. 4 is fixed and the exhaust pipe 37 is clamped and fixed. Next, the ventilation fan installation work is completed by attaching the lid body 27 and decorative frame 30 that were removed earlier. In addition, when removing the ventilation fan for maintenance, inspection, etc., the above steps may be reversed.

According to the above embodiment, the piping work in the attic and the installation work of the ventilation fan can be carried out in separate steps, so the construction period can be shortened, and the exhaust pipe 37 and the ventilation fan can be connected from inside the room, and the exhaust pipe installation Lid 14
Since it is formed so that it cannot be separated from the outer box 1, there is no fear that it will be separated or lost during installation work, and difficult construction work in the ceiling can be reduced. Furthermore, since the length of the exhaust pipe 37 that protrudes into the ventilation fan is determined by the position regulating piece 13, there is no fear that the exhaust pipe 37 will abnormally protrude into the ventilation fan, disrupting the air flow, and fluctuating the performance. performance can be maintained.

(5) Modifications of the Invention Other embodiments will be described below, but the same parts as in the previous embodiment will be given the same reference numerals and their explanation will be omitted. 5 to 7 show a second embodiment of the present invention, in which the top corner hole 9 of the outer box 1 shown in FIG.
One side facing the round hole 10 is bent inward by 90 degrees to form a mounting piece 38, which has a hole 39 in the center and a screw hole 40 near the end. A seal member 17 is placed inside the outer box 1 along the periphery of the square hole 9, and an exhaust pipe 3 is placed inside the round hole 10.
A sealing member 12 corresponding to 7 is attached. As shown in FIG. 7, the exhaust pipe mounting lid 14 has a body 19 formed in a circular shape, with a central angle of its cross section slightly larger than 180°, and one longitudinal end is closed and the other end is open. An exhaust pipe 37 is provided on the inner peripheral surface of the open end.
A corresponding sealing member 20 is attached. Also, a hole 14a is provided in the circular center of the closed end surface of the body portion 19, and a hole 14 corresponding to the screw hole 40 of the mounting piece 38 is provided near the end.
It has b. The pivot 41 is fitted into the hole 14a and fixed to the hole 39 at the center of the mounting piece 38, and the exhaust pipe mounting cover 14 is rotatable about the pivot 41, and the screw 42 passing through the hole 14b is screwed. Hole 4
It is fixed to the outer case 1 by screwing it into the outer case 1.
Then, the exhaust pipe 37 and the exhaust pipe mounting lid 14 are connected to the fifth
When installed in the state shown in the figure, the sealing member 20 and the sealing member 12 overlap each other at the semicircular end sides, and the body 19 of the exhaust pipe mounting lid 14 overlaps with the other.
The outer periphery in the longitudinal direction and the sealing member 17 are in close contact with each other to maintain airtightness. Further, a recess 19a for rotational operation is provided at one location on the outer periphery of the body 19 of the exhaust pipe attachment lid 14, and a knob 24 is provided inside.

Next, the operation of the above structure will be explained. When installing the ventilation fan, the exhaust pipe mounting lid 14 is supported by the pivot 41 with the top open. In this state, the ventilation fan is attached to the ceiling so that the exhaust pipe 37 is placed on the sealing member 12 of the exhaust port 11, and then,
First, place your hand in the recess 19a and close the exhaust pipe mounting lid 14 approximately.
Rotate it 90 degrees, then pick knob 24 and rotate it another 90 degrees. In this way, the exhaust pipe 37 and the exhaust port 11 are covered with the exhaust pipe mounting lid 14. Next, the exhaust pipe mounting cover 14 and the mounting piece 38 are fixed with the tightening screw 42 to complete the installation, and the exhaust pipe 37 is kept airtight by the seal members 12 and 20, and the exhaust port 11
connected to.

8 to 11 show a third embodiment of the present invention, in which the exhaust pipe mounting cover 1 is shown in the first embodiment.
4 rotates with respect to the outer box 1, whereas this embodiment has a sliding exhaust pipe mounting cover 14, and a rectangular hole 9 is attached to the top of the outer box 1 along the long axis. A plurality of guides 43 are formed along both sides of the square hole 9. The exhaust pipe mounting lid 14 is composed of a base 14c having a width corresponding to the guide 43, a circular body 19 corresponding to the exhaust pipe 37, and a semi-conical part 14d communicating the body 19 and the base 14c. The base 14c has a projection 14e, a seal member 20 is attached to the inner peripheral surface of the open end of the body 19, and a knob 24 is provided inside. When installing a ventilation fan with the above configuration, move the exhaust pipe mounting cover 14 fully to the left as shown in FIG. Holding the rear knob 24, the exhaust pipe mounting cover 14 may be moved to the right so as to cover the exhaust pipe 37 and fixed.

(6) Effects of the Invention As described above, the present invention provides an outer box equipped with a fan device, an exhaust port provided in the outer box and having a substantially semicircular side surface communicating with the top, and an air outlet provided in the outer box. The exhaust pipe mounting lid is movably provided and can be operated from the inside of the outer box so as to cover the exhaust port of the top part when moving, and when the exhaust pipe mounting cover is moved, the exhaust pipe mounting cover and the side surface of the outer box are removed. By connecting the exhaust pipe and the exhaust port by sandwiching the exhaust pipe with the approximately semicircular exhaust port of the part, the structure is as simple as simply providing a movable exhaust pipe mounting cover. Thus, it is possible to provide a duct ventilation fan that allows connection work between an exhaust pipe and an exhaust port from the indoor side and is convenient for maintenance and inspection.

[Brief explanation of drawings]

Figures 1 to 4 show the first embodiment of the present invention, with Figure 1 being a vertical sectional view showing its outline, Figure 2 being a perspective view of the outer box, and Figure 3 showing the exhaust pipe installation. FIG. 4 is a perspective view of the lid, and FIG. 4 is a sectional view taken along the line - in FIG. Figure equivalent figure, No. 6
The figures are equivalent to Figure 2, Figure 7 is a diagram equivalent to Figure 3, Figures 8 to 11 show the third embodiment of the present invention, and Figure 8 is a diagram equivalent to Figure 1. , Figure 9 is a diagram equivalent to Figure 2, Figure 10 is a diagram equivalent to Figure 3, Figure 1 is a diagram equivalent to Figure 2, and Figure 10 is a diagram equivalent to Figure 3.
Figure 1 is a perspective view of the main parts before assembly. In the figure, 1 is an outer box, 7 is a fan device, 11 is an exhaust port, 14 is an exhaust pipe mounting cover, and 37 is an exhaust pipe.

Claims (1)

[Scope of Claims] 1. An outer box equipped with a fan device, an exhaust port provided on the outer box and having a substantially semicircular side surface and communicating with the top, and an exhaust port provided on the outer box so as to be movable when moving. an exhaust pipe mounting lid that can be operated from the inside of the outer box so as to cover the exhaust port of the outer box, and by moving the exhaust pipe mounting cover, the exhaust pipe mounting cover and the approximately semicircular exhaust port on the side surface of the outer box are connected. A ventilation fan for a duct, characterized in that an exhaust pipe and an exhaust port are connected by sandwiching the exhaust pipe between the two parts. 2. The ventilation fan for a duct according to claim 1, wherein the exhaust pipe mounting cover is configured such that one end thereof is pivotally supported on the top of the outer box so as to be rotatable. 3. The duct ventilation fan according to claim 1, wherein the exhaust pipe mounting cover is configured to be slidable along the center line of the exhaust pipe. 4. The duct ventilation fan according to claim 1, wherein the exhaust port has a position regulating piece to determine the insertion length of the exhaust pipe.