JPS596187Y2 - ventilation fan - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a ventilation fan that is installed on the ceiling, wall, etc. to ventilate multiple rooms at the same time.

The one shown in Figure 1 is a conventional ventilation fan that ventilates two rooms, such as a living room and a kitchen, at the same time.

Reference numeral 1 denotes a ventilation fan body that is attached to the ceiling of one room, for example, the kitchen.The body 1 is provided with an intake port 2 that is open at the bottom and faces the interior of the room. The formed flange 3 is attached to the horizontal beams 5, 5 of the ceiling board 4.
It is attached with screws.

A blower 8 having a rotary blade 7 driven by an electric motor 6 is built into the main body 1, and a wind tunnel 10 is provided at the suction port 9 of the blower 8 to improve the intake efficiency of the rotor blade 7. The electric motor 6 is supported by a support plate 11 provided over the opening of the wind tunnel 10.

An intake opening 13 is formed on one side of the side wall 12 of the main body 1, and an exhaust opening 14 is formed on the other side.

The intake port 2 and the intake opening 13 of the main body 1 communicate with the intake port 9 of the blower 8, and the intake port 9 is provided facing downward to the intake port 2.

Further, the exhaust opening 14 of the main body 1 communicates with the exhaust port 15 of the blower 8.

Further, the intake opening 13 has a ventilation pipe 17 extending from a ventilation opening 16 formed in the ceiling of the other room, for example, the living room.
are connected to each other via a joint 18, and an exhaust pipe 19 communicating with the outdoors is connected to the exhaust opening 14 via a joint 20, and the exhaust opening 14 is connected to a locking piece 21 raised integrally from the joint 20. A shirt cover 22, which is opened and closed by the wind pressure of a blower, is suspended and supported to prevent outside air from entering from outside through an exhaust pipe 19 when the ventilation fan is not in use.

23 is a decorative roof attached to the air intake port 2;
so that it cannot be seen directly from below.

Therefore, in such a conventional ventilation fan, the ventilation fan body 1
Since the suction port 9 of the blower 8 built inside is opposed to the suction port 2 in one room, for example, the kitchen side, the exhaust air sucked in from the suction opening 13 through the ventilation pipe 17 is transferred to the blower 8.
After hitting the casing 24 and changing direction, the suction port 9
Therefore, the suction characteristics of the intake opening are worse than those of the intake port shown by the two-dot chain line, as shown by the one-dot chain line in Fig. 4. It was something that could not be done.

This proposal was developed in consideration of the above points, and aims to ensure that the exhaust air is smoothly drawn into the intake air from the intake port and the intake opening, thereby reducing the imbalance in ventilation air volume between the two rooms and ensuring efficient exhaust air. The purpose is to provide a ventilation fan with a

An embodiment of the present invention will be described below with reference to FIGS. 2 and 4, and parts having the same structure as the conventional one are denoted by the same reference numerals.

A suction port 9 of a blower 8 built into the ventilation fan main body 1 is connected to an air intake port 2 that opens on the bottom surface of the main body 1 and faces into the room, and the main body 1
The blower 8 is disposed diagonally so as to face an intake opening 13 formed on one side of the side wall 12 of the air blower 8 substantially equally.

Therefore, the exhaust air sucked in through the intake opening 13 is smoothly sucked into the suction port 9 without hitting the casing 24 of a blower or the like and disturbing the air flow.

In addition, the exhaust air taken in from the intake port 2 is also smoothly sucked into the intake port 9, and the imbalance in ventilation air volume between the intake port 13 and the intake port 2 is reduced, and the ventilation of other rooms is also This can be sufficiently carried out via the pipe 17.

In addition, what is shown by a chain line in FIG. 4 is the suction characteristic of the suction opening in this example.

What is shown in FIG. 3 is another embodiment of the present invention.

The electric heat 6 of the blower 8 is attached to the casing 24 by a support plate 26 so that it is located in the space created between the blower casing 24 and the corner 25 of the ventilation fan body 1. , there is no obstruction to the air flow, and the flow of exhaust air near the suction hole is smooth.
The air intake efficiency of the blower 8 is improved.

In addition, what is shown by a solid line in FIG. 4 is the suction characteristic of the intake opening in this example.

In addition, the electric motor 6 is moved to the corner 2 of the main body 1, which was a play space.
5, the main body 1 can be made compact without increasing its size.

As described above, in this case, the blower is installed diagonally so that the suction port of the blower installed inside the main body faces approximately equally with the intake port provided on the bottom surface of the ventilation fan body and the intake opening provided on the side wall. , the exhaust air sucked in from the intake port and the intake opening is smoothly sucked into the intake port, the imbalance in ventilation air volume between the two rooms is reduced, and exhaust air can be efficiently exhausted, which has great practical effects. be.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional ventilation fan installed on the ceiling, Fig. 2 is a sectional view similar to Fig. 1 showing one embodiment of the present invention, and Fig. 3 is a sectional view showing another embodiment of the present invention. FIG. 4 is a sectional view similar to FIG. 1 shown in FIG. 1...Ventilation fan body, 2...Intake port, 1
2...Side wall, 13...Intake opening, 14
...Exhaust opening, 8...Blower, 9...
...Suction port, 15...Exhaust port, 6...
...Electric motor, 24...Blower casing, 25
・・・・・・Corner.

Claims (2)

[Scope of utility model registration request] 1. An intake port is provided on the lower surface of the ventilation fan body mounted on the ceiling, etc., an intake opening and an exhaust opening are provided on the side wall, and the intake port and the intake opening are connected to the intake port of the blower installed in the main body, and an exhaust port is provided. A ventilation fan having an exhaust opening communicating with the air blower, the air blower being arranged diagonally so that the air inlet of the air blower faces the air inlet and the air intake opening substantially equally. 2. The ventilation fan according to claim 1, wherein the electric motor for driving the fan of the blower is disposed in a space formed between the blower casing and the corner of the ventilation fan body.