JPH065547Y2 - Ventilation fan for duct - Google Patents

Description

[Detailed Description of the Invention] Industrial field of 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 which is connected to a duct communicating with the outside to change the air in the living room. is there.

A conventional duct ventilation fan has a structure in which the main body is buried behind the ceiling and is used by connecting to the duct, so air tightness can be secured to prevent air leakage during duct connection work, and it can be easily installed. Was wanted.

For this reason, the conventional duct ventilation fan has, as shown in FIG. 7, for example, a main body 104 having a blower 101 built therein, an intake opening 102 on the living room side, and a discharge opening 103 on one side. A mounting plate 108 having a substantially conical duct connecting portion 106 for connecting the connecting duct 105 and an opening 107 provided so as to communicate with the discharge opening 103;
An upper part of a mounting plate 108 which comprises a decorative grill 109 mounted on the main body 104 so as to cover the suction opening 102, and pushes the main body 104 upward to be fixed to the mounting frame 115 of the ceiling opening in advance. By sliding the protrusion 111 provided on the upper portion of the discharge opening 103 of the main body 104 on the lower surface of the guide portion 110 that extends obliquely downwardly on the lower portion, the lower portion is fixed with a fan bolt 113 or the like. The main body 104 and the mounting plate 108 are pressed against each other via the seal member 112. In addition, the method of connecting the duct 105 and the duct connecting portion 106 is to insert the duct connecting portion 106 into the duct 105 and wrap the aluminum tape 114 and the like around the outer circumferences of the two to fix them. (For example, Japanese Utility Model Publication No. 60-27857) Problems to be Solved by the Invention In such a conventional configuration, since the connection between the duct 105 and the duct connecting portion 106 is a taping operation, it causes air leakage. It took a great deal of skill to finish the work in a short time without generating any gaps. Further, the main body 104 and the mounting frame 108
Although the airtightness with the seal member 112 can be ensured by the seal member 112, a gap is generated between the mounting frame 108 and the duct connecting portion 106 due to variations in component accuracy, which causes air leakage.

In consideration of the above-mentioned conventional problems, the first object of the present invention is that anyone can perform duct connection work easily and in a short time without gaps regardless of their skill level. The second purpose is to reliably discharge the air from the main body by the blower to the outside through the duct without leaking to the ceiling, even if there is a large degree of variation in component accuracy.

Means for Solving the Problem In order to achieve the first object, the first means of the present invention is to provide one side surface having a discharge opening of a main body containing a blower,
The inner end of the seal member has a circular shape smaller than the outer diameter of the connecting duct by folding back the tip to the body side, and a plurality of grooves are provided at the tip and the tip is folded back to the body side. The duct ventilation fan is formed by connecting duct connecting portions formed in a circular shape smaller than the outer diameter of the connecting duct.

The second means for achieving the first object is to form a circular shape smaller than the outer diameter of the connecting duct by folding the tip back to the main body side on one side surface having the discharge opening of the main body containing the blower. A seal member is provided on the inner peripheral part of the duct, and a plurality of grooves are provided at the tip and the tip is bent inward to connect a duct connecting portion formed in a circular shape larger than the outer diameter of the connecting duct,
A ventilation fan for a duct is detachably provided with a ring-shaped tightening tool for tightening the outer circumference of the duct connecting portion.

A third means for achieving the second object has a main body having a protruding portion provided on an upper portion of one side face having a discharge opening and having a blower built therein, and a seal member having a circular tip shape on an inner peripheral portion. And a duct connecting portion whose tip is formed in a circular shape, and a guide portion extending obliquely downward at which the projecting portion of the main body is slidably engaged with the lower surface of the main body is provided at the upper portion to communicate with the discharge opening portion of the main body. And a mounting plate having an opening portion, wherein the sealing member has an inner diameter at its tip smaller than the outer diameter of the connecting duct,
Moreover, a part or the whole of the other end is configured as a duct ventilation fan that projects from the opening of the mounting plate toward the main body.

With the configuration of the first means, since the duct connecting portion is provided with a plurality of grooves at the tip thereof, when the connecting duct is inserted, the inner diameter is widened to facilitate insertion, and the tip is Since it is formed so as to be folded back on the main body side, the connecting duct can be easily fixed without coming off. Further, the seal member provided on the inner peripheral portion of the duct connecting portion eliminates a gap with the connecting duct by its tip.

According to the structure of the second means, after inserting the connecting duct into the duct connecting portion and tightening the outer periphery of the tip end portion of the duct connecting portion with the ring-shaped tightening tool, a plurality of grooves are provided at the tip end portion of the duct connecting portion. In addition, since the tip is bent inward, the inner diameter of the tip of the duct connecting portion is easily reduced, and the connecting duct can be fixed. Also, loosening the tightening tool returns the inner diameter of the tip of the duct connection to its original size,
The connecting duct can be easily removed. Further, the seal member provided on the inner peripheral portion of the duct connecting portion eliminates a gap with the connecting duct by the tip thereof.

According to the structure of the third means, when the connecting duct is inserted into the duct connecting portion of the mounting plate fixed to the ceiling, the connecting duct and the tip of the seal member come into close contact with each other, and the main body is pushed up toward the mounting plate, and its protrusion As the part slides on the lower surface of the guide part of the mounting plate, the main body and the mounting plate are pressed against each other via the other end of the seal member, so that the space between the main body and the connection duct is completely sealed via the seal member. Will be sealed.

Embodiment First, an embodiment of the first means of the present invention will be described with reference to FIGS. 1 and 2. In the figure, reference numeral 1 is a main body in which a blower 2 is built in, a suction opening 3 is provided on the side of the living room, and a discharge opening 4 is provided on one side surface, and the suction opening 3 is covered by a decorative grill 5. Further, a seal member 8 having a circular shape smaller than the outer diameter of the connecting duct 7 is formed by folding back the tip to the main body 1 side, and a plurality of grooves 9 are provided at the tip, and the tip is formed on the main body. The duct connecting portion 6 which is folded back to the 1 side and formed in a circular shape smaller than the outer diameter of the connecting duct.
Is provided on one side surface of the main body 1 so as to communicate with the discharge opening 4.

In the above configuration, when the connecting duct 7 is inserted into the duct connecting portion 6, the duct connecting portion 6 has a plurality of grooves 9 although the inner diameter of the tip is smaller than the outer diameter of the connecting duct 7. The duct 7 can be pushed and spread along the outer periphery of the duct 7 for easy insertion, and since the tip is folded and formed on the main body 1 side, it is easily fixed without coming off, and further, the tip of the seal member 8 When the outer periphery of the connection duct 7 is in close contact, the duct connection portion 6 and the connection duct 7 are sealed without any gap.

Next, one embodiment of the second means of the present invention will be described with reference to FIGS.
A description will be given based on FIG.

In the figure, reference numeral 11 is a main body in which a blower 12 is built-in, has a suction opening 13 on the living room side and a discharge opening 14 on one side surface, and the suction opening 13 is covered with a makeup grill 15. Then, the seal member 1 whose end is folded back to the main body 1 side and formed into a circular shape smaller than the outer diameter of the connection duct 17
A duct connecting portion 16 having a circular shape larger than the outer diameter of the connecting duct 17 is formed by having a plurality of grooves 19 at its tip and bending the tip inwardly.
It is provided on one side surface so as to communicate with the discharge opening portion 14, and a ring-shaped tightening tool 21 is provided on the outer periphery of the tip of the duct connecting portion 16.

In the above configuration, the connecting duct 17 is connected to the duct connecting portion 16
When it is inserted into the inside, by loosening the tightening tool 21, the inner diameter of the tip of the duct connecting portion 16 is larger than the outer diameter of the connecting duct 17 so that it can be easily inserted. When the outer periphery of the tip of the portion 16 is tightened, the inner diameter of the tip of the duct connecting portion 16 is easily reduced because the groove 19 is provided in plural numbers, and the connecting duct 17 can be fixed. On the contrary, when removing the connecting duct 17, the inner diameter of the tip of the duct connecting portion 16 returns to the original size by loosening the fastening tool 21, and the connecting duct 17 can be easily removed. Further, since the tip of the seal member 18 and the outer periphery of the connection duct 17 come into close contact with each other, the duct connection portion 16 and the connection duct 17 are hermetically sealed.

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

In the figure, reference numeral 31 is a main body having a blower 32 built therein, having a suction opening 33 on the living room side and a discharge opening 34 on one side surface, and forming a protrusion 35 on the upper portion of this one side surface. Then, the projecting portion 35 forms a guide portion 36 that extends obliquely downward and slides upward along the lower surface of the upper portion,
An opening 37 that communicates with the discharge opening 34, and a circle that is connected so as to communicate with the opening 37 and has a tip with an inner diameter smaller than the outer diameter of the connection duct 39, and a part or the whole of the other end. The mounting plate 43 having the duct connecting portion 42 having a circular tip shape, which has the seal member 41 formed so as to project from the opening 37 on the inner peripheral portion,
Is pressure-contacted to the one side surface via the seal member 41. In the figure, reference numeral 44 is a fan bolt for fixing the main body 31 and the lower portion of the mounting plate 43, and 45 is a decorative grill that covers the suction opening 33 of the main body 31.

In the above structure, first, the mounting plate 43 is mounted on the mounting frame 47 fixed to the peripheral edge of the ceiling opening 46, and the duct connecting portion 42
When the connection duct 39 is inserted therein, the seal member 41 and the outer periphery of the connection duct come into close contact with each other. Next, when the main body 31 is inserted into the ceiling opening 46 and pushed up, the protruding portion 35 of the main body 31 comes into contact with the lower surface of the guide portion 36 of the mounting plate 43 and slides. Then, the main body 31 is pulled toward the mounting plate 43 side, and is pressed against the mounting plate 43 through the other end of the seal member protruding from the opening of the mounting plate 43 toward the main body 1 side.

In this way, the main body 31 and the connection duct 39 are communicated with each other by the seal member 41 without any gap.

EFFECTS OF THE INVENTION As is apparent from the above description of the embodiments, according to the present invention, the connecting duct can be easily inserted into the duct connecting portion, and by inserting the connecting duct, the connecting duct is fixed so as not to come off easily. No gap is generated between the duct connecting portion and the connecting duct, and thus the duct connecting work can be easily performed in a short time and reliably without gaps regardless of the skill level.

If it is necessary to occasionally remove the connecting duct from the duct connecting part, connect it by detachably tightening the outer peripheral end of the duct connecting part whose inner diameter is larger than the outer diameter of the connecting duct with a ring-shaped tightening tool. The duct can be easily removed.

Further, a sealing member formed so that the inner diameter of the tip is smaller than the outer diameter of the connecting duct and the other end of the connecting plate is projected from the opening of the mounting plate communicating with the discharge opening of the main body to the main body side. By providing in the inner peripheral portion, the main body and the connection duct will be completely sealed via the seal member, and even if there is a large variation in component accuracy, the variation is absorbed and the airtightness is secured, There is an effect that the wind from the main body can be reliably discharged to the outside through the connection duct without leaking to the ceiling.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the ventilation fan for a duct showing an embodiment of the first means of the present invention, FIG. 2 is a front view of a duct connecting portion of the ventilation fan for a duct of the same embodiment, and FIG. 4 is a cross-sectional view of a ventilation fan for a duct showing an embodiment of the above-mentioned means
FIG. 5 is a cross-sectional view of the duct ventilation fan of the same embodiment when removing the tightening tool at the duct connection part, FIG. 5 is a perspective view of the tightening tool of the duct ventilation fan of the same embodiment, and FIG. 6 is one of the third means. Sectional view of installation of ventilation fan for duct showing embodiment, No. 7
The figure is a cross-sectional view of a conventional ventilation fan for duct installation. 1,11,31 ... Main body, 2,12,32 ... Blower,
4, 14, 34 ... Discharge openings, 6, 16, 42 ...
Duct connection part, 7, 17, 39 ... Connection duct, 8, 1
8, 41 ... Sealing member, 9, 19 ... Groove, 21 ... Tightening tool, 35 ... Projection part, 36 ... Guide part, 37 ...
… Opening part, 43… Mounting plate.

Claims (3)

[Scope of utility model registration request] 1. A seal member having a circular shape smaller than the outer diameter of a connecting duct and having a circular shape smaller than the outer diameter of a connecting duct on one side surface of a main body containing a blower and having a discharge opening. A duct ventilation fan having a plurality of grooves at the tip thereof, the tip being folded back toward the main body side, and connecting a duct connecting portion formed in a circular shape smaller than the outer diameter of the connecting duct. 2. A seal member having a circular shape smaller than the outer diameter of the connecting duct and having a circular shape smaller than the outer diameter of the connecting duct on one side surface having a discharge opening of the main body containing a blower, the inner peripheral portion thereof. Having a plurality of grooves at the tip and bending the tip inward to connect a duct connecting portion formed in a circular shape larger than the outer diameter of the connecting duct, and tightening the outer periphery of the duct connecting portion in a ring shape. A ventilation fan for ducts that is equipped with tools that can be detached. 3. A body having a blower therein and having a projecting portion at an upper portion of one side having a discharge opening, and a seal member having a circular tip shape on an inner peripheral portion, and the tip shape is formed in a circular shape. A mounting plate having an opening communicating with the discharge opening of the main body, the guide connecting portion being provided with a duct connecting portion, and a guide portion that extends obliquely downwardly at the upper portion of the main body, the projection of the main body slidingly engaging the lower surface of the main body; The ventilation member for a duct, wherein the sealing member has an inner diameter at a tip thereof smaller than an outer diameter of the connecting duct, and a part or the whole of the other end projects from the opening of the mounting plate toward the main body.