JPH0452598Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a ventilation fan that is used outdoors in combination with a hood in factories, warehouses, restaurants, etc.

BACKGROUND ART Conventionally, this type of ventilation fan generally had a configuration as shown in FIG. That is, the electric motor 102 to which the blades 101 are fixed is fixed to the opening surface 104 by the support 103, and the opening surface 104 is configured to be substantially parallel to the wall surface contact surface 106 of the frame 105, and the interior side 107 and was fixed to the wall surface 108 with screws or the like. On the other hand, food 109
was fixed to the wall surface 108 from the outdoor side 110 with screws or the like. In this configuration, the wind 111 blown from the room is gently bent along the hood 109 and exhausted to the outdoors.

Problems to be Solved by the Invention In recent years, there have been many requests to reduce the protrusion of the hood from the wall surface 108, and as shown in FIG. However, there was a problem in that the turbulent flow 113 within the hood became large, resulting in a decrease in exhaust volume and an increase in noise.

The present invention is intended to solve the above-mentioned problems, and aims to prevent a reduction in exhaust volume and an increase in noise when a small hood is used.

Means for Solving the Problems In order to achieve the above object, the present invention includes a blade for sending wind, an electric motor for driving the blade, a support body for supporting the electric motor, and a support body having an outer diameter slightly larger than the outer diameter of the blade. A ventilation fan main body is constituted by an opening surface having an inner diameter and an opening surface to which the support is fixed, and a frame body is provided for fixing the ventilation fan main body to a wall opening in which a hood is installed on the outside of the room; The opening surface is
The ventilation fan is configured such that an upper end part is fixed to the frame body in a direction that is inclined forward toward the hood than the lower end part and is located above the inside of the hood.

Effects With the above-described configuration, the present invention has the electric motor tilted forward in the same direction as the opening surface, so that the blown air flows in the forward tilted direction, that is, along the inner surface of the hood installed on the outdoor wall surface. Therefore, it can flow smoothly.

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

As shown in the figure, an electric motor 2 to which a wind blowing blade 1 is fixed is attached to a support 3.
are fixed to the opening surface 4 having an inner diameter slightly larger than the outer diameter of the blade 1, thus forming the ventilation fan body. This ventilation fan body is
A small hood 13 is fixed from the outdoor side 14 to an opening in a wall surface 9 in which a small hood 13 is installed using screws or the like (not shown) by a frame 10 as will be described in detail below.

The opening surface 4 is arranged such that the upper end 5 is inclined forward toward the hood 13 than the lower end 6, and the upper end 5 is located above the inside of the hood, and the upper end 5 is inserted through the blind plate A8. Further, the side end portions are fixed to the frame body through the blind plate B11, and the lower end portion 6 is directly fixed to the frame body, and this frame body 10 is fixed to the wall surface 9 from the indoor side 12 with screws or the like (not shown). .

With the above configuration, the amount of protrusion of the hood 13 from the wall surface 9 can be reduced, and the portion of the ventilation fan body that protrudes toward the indoor side 12 can be reduced. In this installed state, the upper end 5 of the opening surface 4 is located above the inside of the hood 13, but almost no air blown from the forward-inclined opening surface 4 flows into the space above the inside of the hood 13. Does not affect performance.

In addition, the wind blown from the opening surface 4 tilted forward is
It flows smoothly along the inner surface of the hood 13, and turbulence within the hood 13 can be eliminated.

Effects of the invention As is clear from the above embodiments, according to the invention, even if the hood installed on the outdoor side of the wall is made small, the flow of air blown from the blades becomes smooth, resulting in a reduction in exhaust volume and noise. can be prevented from increasing. In addition, by locating a part of the ventilation fan body in a space that does not contribute to airflow inside the hood, the part of the ventilation fan body that protrudes toward the indoor side can be reduced without affecting performance, making the indoor space more compact. It can be made into something more beautiful.

[Brief explanation of the drawing]

Figure 1 is a front view of a ventilation fan according to an embodiment of the present invention, Figure 2 is a side view of the ventilation fan, Figure 3 is a sectional view of the ventilation fan when installed with a hood, and Figure 4 is a conventional ventilation fan. Fig. 5 is a cross-sectional view when the ventilation fan is installed together with a small hood. 1...Blade, 2...Electric motor, 3...Support, 4
...Opening surface, 5...Top end, 6...Bottom end, 1
0...Frame body.

Claims (1)

[Scope of utility model registration request] A blade that sends air, an electric motor that drives the blade, a support that supports the electric motor, an opening surface that has an inner diameter slightly larger than the outer diameter of the blade, and that fixes the support. constitutes a ventilation fan main body, and the ventilation fan main body is provided with a frame for fixing the ventilation fan main body to a wall opening in which a hood is installed on the outside of the room, and the opening surface has an upper end inclined forward toward the hood than a lower end. and a ventilation fan fixed to the frame in a direction located above the inside of the hood.