JPH0339845A - Duct ventilating fan - Google Patents

Abstract

PURPOSE:To facilitate arrangement of duct piping and to facilitate exchange and inspection of a blower by a method wherein a resilient substance is located between flanges, and the flanges are nipped by means of a connection body formed such that two semicircular connection pieces are intercoupled on the one end side by exerting tension so that they always hold a circular shape. CONSTITUTION:In the installation position of a ventilating fan body, a frame 1 is secured to the back of a ceiling such that an adapter 5 for suction is pointed to a suction port 11. Flanges 1a and 2a are butted against each other in a way that a frame 2 is located such that an adapter 8 for discharge is pointed to a discharge port 13. A resilient substance 6 is located between the flanges 1a and 2a. In a state that the flanges 1a and 2a are pressed against each other and the resilient substance 6 is compressed, the flanges 1a and 2a are inserted in a groove 9b of a connection body 9 to secure the frames 1 and 2. The adapter 5 for suction is connected to the suction port 11 through a suction duct 4, and the adapter 8 for discharge is connected to the discharge port 13 through a discharge duct 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a duct ventilation fan that ventilates a room through a duct communicating with the room and the outdoors.

Conventional technology Traditionally, most houses were single-family houses, and many of the single-family houses were also made of wood. In this wooden house, the walls were made of wood, the ceiling was also made of soft materials, and the space in the attic was large, so ventilation inlets were installed in the walls and ceiling of the attic. There is a wide range in which the exhaust port can be installed, and the duct ventilation fan can be installed at any location that will not affect the performance of the fan.

For this reason, conventional duct ventilation fans were installed as shown in Figure 4.

That is, a box-shaped frame 101 with a built-in blower 100 is installed in the ceiling with ample space, and a suction adapter 102 provided on the side of the box-shaped frame 101 is connected to the ceiling surface 10.
A suction port 105 formed in 4 is connected via a suction duct 103, thereby communicating the interior of the room with the suction port of the blower 1oO. At this time, since the attic space is wide, the opening position of the suction port 105 and the piping of the suction duct 103 can be arbitrarily determined in consideration of workability, performance of the duct ventilation fan, etc.

Then, an exhaust adapter 106 provided on the other side surface of the frame 101 opposite to the above-mentioned side surface is connected to an exhaust port 109 formed on the outer wall 108 via an exhaust duct 107.
The discharge port of the blower 100 communicates with the outdoors. The opening position of the exhaust port 109 and the piping of the exhaust duct 107 can be arbitrarily determined as described above.

When operating the duct ventilation fan with the above configuration, the blower 1
00, indoor air is sucked in from the suction port 106,
The exhaust port 1 is fed into the frame 101 from the suction adapter 102 through the suction duct 103, passes through the exhaust duct 107 from the exhaust adapter 106, and is formed in the outer wall 108.
It had been exhausted outside since 2009.

Problems to be Solved by the InventionIn recent years, due to the soaring price of land, there has been an increase in the number of housing complexes rather than single-family houses, and with the demand for higher airtightness, walls and ceilings are being made of hard materials such as concrete. As things have changed, the locations for installing inlets and exhaust vents for ventilation have become limited, the height of the attic has become lower, and the number of obstacles in the attic has increased. As a result, the ducts could not be installed easily, and the construction work was done by using flexible ducts and bending them at large angles to avoid obstacles, which increased the ventilation resistance in the ducts and prevented the required amount of ventilation from being achieved. There were times when I couldn't do it. When replacing or inspecting the housing or blower 100, in order to remove the built-in frame 101 from the ceiling, use the suction adapter 102 and the exhaust adapter 1.
06 from the suction duct 103 and the exhaust duct 107, and these are often tightened with screws, so it is very difficult to perform such work in a low ceiling space. In some cases, ceiling panels had to be removed.

The present invention solves these problems, and even if the locations of the inlet and exhaust ports provided on the ceiling or outer wall for ventilation are limited, or even if there are obstacles in the ceiling, the ventilation fan can be used. The purpose of this is to enable easy duct piping without degrading the performance of the blower, and to facilitate replacement and inspection of the blower.

Means for Solving the Problems In order to solve the problems, the present invention provides a first button and a second button each having a cylindrical shape with a bottom and having an outwardly extending flange at an open end.
Of the two frames, the first frame has a built-in blower, a suction adapter is provided on the side surface to communicate the interior with the suction duct, and the side surface of the second frame is provided with a suction adapter that communicates the interior with the exhaust duct. An exhaust adapter is provided, the circumferential positions of the first frame and the second frame are arbitrarily selected, the flanges are butted against each other, an elastic body is interposed between the flanges, and a semicircular shape is formed. The duct ventilation fan is constructed by sandwiching and fixing the flange between a connecting body in which two arc-shaped connecting pieces are connected by applying tension so as to always maintain an annular shape on one end side.

Effect With this configuration, when installing a duct ventilation fan and performing duct piping work, place the duct ventilation fan body in a position where the duct can reach each of the inlet and exhaust ports provided on the ceiling and outer wall without bending as much as possible. Then, fix the first frame with the suction adapter facing the inlet on the ceiling, and fix the second frame with the exhaust adapter facing the exhaust outlet on the outside wall, and connect the frame @1 and the flange together. , it is completed by inserting an elastic body between the connecting bodies.

In addition, when replacing or inspecting the blower, the frame can be easily opened by opening the free end of the connecting body outward against the tension of the connecting part and removing it from the flange. It becomes possible.

Embodiment One embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

The frame of the ventilation fan main body is formed by fixing two bottomed cylindrical frames A1 and B2 by abutting and fixing flange A1a and flange B2a extending outward at the open ends thereof. A blower 3 is built into the frame A1, and a suction adapter 5 is provided on the side surface to communicate the inside with the suction duct 4. The frame B2 is provided with an exhaust adapter 8 on its side surface that communicates the inside with the exhaust duct. Then, fixing the frame A1 and frame B2, the flange A
An elastic body 6 made of rubber is interposed between the flange A1a and the flange B2a, and the connecting body 9 connects the flange A1a.

This is done by sandwiching B2a. The connecting body 9 includes two connecting pieces 9a having a circular arc shape and having grooves 9b that are open on the inner peripheral side and that sandwich the flanges A1a and B2a.

9a are connected at one end side to form an annular shape, and a spring (not shown) is attached to this connection portion, which is biased with tension so as to maintain the annular shape at all times. Therefore, the connecting body 9 is a connecting piece 9a.

The free end portion of 9b is opened outward against the tension of the spring and is attached to and detached from flanges A 1a and B 2 a. In addition, the circumferential positional relationship between the frame A1 and the frame B2 is fixed by the joint 9, so the adjustment is not done step by step by shifting the screw holes one pitch at a time, but is finely adjusted continuously. be able to.

Installation work for a duct ventilation fan having the above configuration in an apartment complex or a high-rise building will be explained below.

In these buildings, ventilation inlets and exhaust vents are limited to locations where they can be installed, but in the ceiling,
The positions where the suction duct 4 and the exhaust duct 7 can reach each of the suction port 11 provided on the wall and the exhaust port 13 provided on the outer wall 12 in a nearly straight line without being obstructed by obstacles on the way are selected.

With this position as the installation position of the ventilation fan body, the rich frame A1 is fixed to the ceiling with the suction adapter 6 facing the suction port 11. Next, the frame B2 is set so that the exhaust adapter 8 faces the exhaust port 13, and the flange A1a and the flange B2a are butted together at that position. At this time,
An elastic body 6 is interposed between the flange A1a and the flange B2a.

Then, with the elastic body 6 compressed by pressing the flange A1a and flange B2a against each other, the flanges A1a and B2a are inserted into the groove 9b of the connecting body 9, and
Fix frame A1 and frame B2. In this fixed state, since the elastic body e is interposed in a compressed state, the fixing becomes more secure and both frames A1. Airtightness between B2 is ensured. Finally, the suction adapter 6 and the suction port 11 are connected through the suction duct 4, and the exhaust adapter 8 and the exhaust port 13 are connected through the exhaust duct 7, thereby completing the construction.

Next, the case of replacing or inspecting the blower 3 will be explained.

In this case, if the free end of the connecting body 9 is opened outward, the connecting body 9 can be easily removed from the flanges A1a and B2a.
The blower 3 can be easily attached and detached by separating the frame A1 and the frame B2.

As mentioned above, the installation work of the duct ventilation fan is carried out on frame A1.
．． The mutual circumferential positional relationship of the frame B2 can be continuously fine-tuned to connect the suction duct 4 and the exhaust duct door in a nearly straight line, making this work easy and improving the performance of the ventilation fan. It can't go down. In addition, when replacing or inspecting the blower 3, the frame 1A containing the blower 3 can be opened by simply attaching and detaching the connector 7, so the work can be easily performed even in a low-height ceiling. becomes.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, the locations where ventilation inlets and exhaust ports can be provided on the ceiling surface or outer wall are limited. Even if there are many obstacles in the way of the duct piping, we can adjust the relative positions of the two frames and make further fine adjustments to select the installation position of the ventilation fan body that can be installed without bending the duct. Therefore, duct piping can be easily installed without deteriorating the performance of the ventilation fan.

In addition, when replacing or inspecting the blower, the frame can be opened by simply opening the connecting body outward and attaching and detaching it to the flange of the frame, making it easy to replace or inspect the fan even in low-height ceilings. is obtained.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing a duct ventilation fan according to an embodiment of the present invention, Fig. 2 is a partially broken front view of the same, and Fig. 3 is an installation view of the same.
FIG. 4 is an installation diagram of a conventional duct ventilation fan. 1... Frame A, 1a... Flange A, 2... Frame B, 2a... 7-piece B, 3... Blower, 4...Suction duct, 5...Suction adapter, 6...
Elastic body, end...exhaust duct, 8...exhaust adapter, 9...connection body, 9a...
・Connection piece.

Claims (1)

[Claims] Of the two frames, a first frame and a second frame, each having a cylindrical shape with a bottom and an outwardly extending flange at the open end, the first frame has a built-in blower, and the inside and the suction duct are arranged on the side. A suction adapter for communication is provided, and an exhaust adapter is provided for communication between the inside and the exhaust duct on a side surface of the second frame, and the positions of the first frame and the second frame relative to each other in the circumferential direction are arbitrarily set. The flanges were selected and abutted against each other, an elastic body was interposed between the flanges, and the two semicircular arc-shaped connection pieces were connected by applying tension so as to always maintain an annular shape on one end side. A duct ventilation fan in which the flange is sandwiched and fixed between connecting bodies.