JP2001050191A - Twin electric fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply wind to both sides by a single electric fan, contract a mounting area, facilitate an operation, and reduce costs by attaching a pair of blades whose twist directions are reverse, to both ends of a single rotary shaft at prescribed clearances. SOLUTION: A pair of blades 2 whose twist directions are reverse are attached to a single rotary shaft 1 at prescribed clearances. In association with rotation of the single rotary shaft 1, a pair of blades 2 are rotated in reverse directions, and air are supplied to the reverse directions. In a fulcrums 3 enclosing a motor for rotatively driving the rotary shaft 1, a prescribed clearance is formed between a pair of blades 2. The motor is driven by only turning on a single power switch. It is thus possible to supply air to both sides by the single electric fan, and it is also possible to contract a mounting area. Furthermore, it is possible to facilitate an operation, and it is also possible to reduce costs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan capable of sending winds in opposite directions by a single unit.

[0002]

2. Description of the Related Art So-called electric fans have been widely used for both home and business use since ancient times. The basic configuration of sending wind in the direction
The fact is that nothing has changed to this day.

[0003]

There are various places where a fan is actually required regardless of whether it is for home use or for business use. It is not unusual if you want the air to blow. In such a case, according to the conventional idea, there are no other choice but to place two electric fans in close proximity or to install a forked duct, which has a problem that it becomes an obstacle and increases the cost. An object of the present invention is to solve such a problem.

[0004]

Means for Solving the Problems A pair of blades 2 whose twisting directions are opposite to each other are attached to a common rotating shaft 1 rotating in the same direction at a predetermined interval, and a pair of blades 2 is rotated by rotating the rotating shaft 1. Of the blades 2 blows in opposite directions to each other.

[0005] A support 3 for accommodating or supporting a motor for rotating the rotary shaft 1 necessarily comes to the above-mentioned predetermined interval provided between the pair of blades 2.

[0006] The blade 2 referred to here is a number of blades twisted for air blowing, which can be mounted and set on a rotating shaft.

[0007] The shape of the blade 2 may follow that of a conventional fan, and a guard gauge (not shown) is provided around the rotation range as necessary.

The present invention also includes a part set in which the rotating shaft 1 and the support base 3 containing the motor and the blade 2 are separated from each other, and which is a product assembled at the site of use. .

At this time, if at least one of the blades 2 is detachable, if necessary, only one of the blades is mounted (a protective cap is put on the free shaft portion) so that air can be blown to only one side. You can also.

[0010]

The operation of the "twin fan" of the present invention requires only turning on one power switch and rotating the motor, and by doing so, the blades 2 attached to one rotating shaft 1 at a predetermined interval. Sends winds in opposite directions because their twist directions are opposite to each other.
Then, the replenishment of the wind (air) is made to be sucked in from the above-mentioned predetermined interval. In practice, it has been found that the predetermined space is sufficient if the space is large enough to mount the support 3.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION As an example of a desk-type electric fan currently used for home use, the power of a motor installed on a support base is set to 1.8 times, and the rotation axis of the motor is increased. Are protruded to both sides, and the same set of three blades as before is attached to one side as usual and the other side in the opposite direction. The plastic cover surrounding the motor unit is integrated with the support base. The gauge that protects the blades may cover the entire blades on both sides including the motor section, but it is desirable to attach each of the blades for the convenience of rotation of the neck of the support table and attachment / detachment of the one-sided blade.

The same applies to business use, and other details can be freely designed according to the purpose and circumstances.

[0013]

As described above, according to the present invention, it is possible to send air to both sides with one electric fan. Since only one is required, it is easy to handle, and at the same time, has a great effect, such as low cost.

[Brief description of the drawings]

FIG. 1 is a side view of an example of the present invention.

[Explanation of symbols]

 1 ... rotating shaft 2 ... blade 3 ... support base

Claims (1)

[Claims] 1. A twin fan wherein a pair of blades having opposite twisting directions are attached to a common rotating shaft rotating in the same direction at a predetermined interval.