JP2001065492A - Electric fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed air flow to a wide range without using a swing mechanism. SOLUTION: This electric fan comprises a drive motor 3 having a rotating shaft extending in vertical direction, a fan 4 installed on the rotating shaft of the drive motor 3, and a cover 5 covering the fan 4. The cover 5 comprises an oiuter cylindrical part 5a surrounding the outer perihery of the fan 4 and a disk part 5b disposed in the axial direction of the fan 4. By this, air led from the rotating fan 4 into the cover 5 is deviated from the disk part 5a in the radial direction of the fan 4, and discharged to the outside through an opening part between the disk part 5b and the oiuter tube part 5a. Thus, air flow can be fed to over the area of 360 deg. and, for example, when the fan is positioned at the center of a room, air can be fed to all persons in the room.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan mounted on a floor or the like.

[0002]

2. Description of the Related Art In recent years, the introduction of air conditioners has become common, and air conditioners have been installed in many homes.
However, there are some areas where the temperature is relatively low even in summer, and some people do not like the artificial cool air of the air conditioner.

[0003] Incidentally, an air flow sent from a fan has a characteristic that it goes in the axial direction of a propeller fan (hereinafter referred to as a fan). Therefore, if the direction of the fan is constant, the direction of the air flow is also constant, and there is a problem that only the person in front of the fan hits the wind. Therefore, a general electric fan is provided with a swinging mechanism of the fan, and uses a link to change the direction of the fan within a predetermined angle range, thereby expanding an area where the wind is hit.

[0004]

However, the swing mechanism of the fan can only change the direction of the fan by, for example, about 120 degrees, so that it is difficult to blow the wind to all the people around the fan. For this reason, a fan is often placed at one corner of the room, but this poses a problem that it is difficult for a person who is far from the fan to reach the wind even in front of the fan. In order to avoid such a problem, when the fan is rotated at a high speed to increase the air volume, the wind can be applied to a person far away from the fan, but the fan is located just before the fan. There may be a problem that the wind hits a person too strongly and the wind noise becomes too loud.

The present invention has been made in view of such a conventional problem, and has as its object to provide a fan capable of sending out an air flow over a wide range without using a swing mechanism. .

[0006]

In order to achieve the above-mentioned object, a fan according to the present invention comprises a motor having a rotating shaft extending vertically, a fan mounted on the rotating shaft of the motor, and a fan. A cover that covers the fan, the cover is provided on the outer side of the fan in the radial direction,
A deflecting portion arranged in the axial direction of the fan, and an opening formed between the outer packet portion and the deflecting portion, wherein the air introduced into the cover by the rotating fan rotates the deflecting air. The fan is deflected in the radial direction of the fan and discharged to the outside through the opening.

[0007]

According to the electric fan of the present invention, there is provided a motor having a rotating shaft extending in the vertical direction, a fan attached to the rotating shaft of the motor, and a cover for covering the fan.
The cover includes an outer envelope provided radially outside the fan, a deflecting unit arranged in the axial direction of the fan, and an opening formed between the outer envelope and the deflecting unit. Since the air introduced into the cover by the rotating fan is deflected in the radial direction of the fan by the deflecting unit and discharged to the outside through the opening, for example, over a range of 360 degrees An airflow can be sent out, and if a fan is placed in the center of the room, it can supply wind to everyone in the room.

[0008] Further, there is a case where a person does not like the wind of the fan or a case where the fan is placed in front of a wall, so that it is not necessary to always send out the air flow over a range of 360 degrees. In such a case, it is convenient to provide a shutter at the opening to restrict the passage of the air, so that the wind can be prevented from being blown in a specific direction.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a fan according to the present embodiment. In FIG. 1, a column 2 planted on a pedestal 1 placed on a floor or the like extends in a vertical direction, and a drive motor 3 is attached to an upper end thereof. The drive motor 3 is arranged such that its rotating shaft (not shown) projects upward in the vertical direction, and a fan 4 having three blades is attached to the rotating shaft.

A cover 5 is attached to the outside of the fan 4. The cover 5 has a cylindrical outer tube portion (outer packet portion) 5.
a, a disk portion 5b having the same diameter as the outer cylindrical portion 5a and spaced above the outer cylindrical portion 5a, and a plurality of wires connecting the upper end of the outer cylindrical portion 5a and the outer periphery of the disk portion 5b. It is composed of a lattice part 5c and a wire netting part 5d that connects the lower end of the outer cylinder part 5a and the support column 2. A wire mesh portion 5d formed by combining wires has a function of supporting the outer cylindrical portion 5a with respect to the support column 2, and
A function of preventing a human hand from approaching the fan 4 rotating from below the outer cylinder portion 5a;
c indicates a function of supporting the disk portion 5b with respect to the outer cylinder portion 5a, and a human hand approaching the fan 4 rotating through the opening between the disk portion 5b and the outer cylinder portion 5a. And a function to prevent the user from doing so.

The pedestal 1 is provided with an on / off button 1a for the drive motor 3, strength buttons 1b and 1c, and a timer switch 1d. These buttons 1a
1c and the switch 1d are well known and will not be described in detail below.

The operation of the embodiment will be described. When the on / off switch 1a is pressed, electric power is supplied to the drive motor 3 via a cord (not shown), and the fan 4 rotates together with the rotating shaft. Since the blades of the fan 4 are inclined with respect to the rotation direction as shown in FIG. 1, the rotation causes the air below the fan 4 to be sent upward. In such a case, the fan 4 in the cover 5
Since the wire mesh portion 5d having good air permeability is arranged below the air conditioner, it does not prevent air from entering the cover 5 from the outside of the electric fan.

On the other hand, the air sent upward by the fan 4 impinges on the disk portion 5b as a deflecting portion, whereby the direction of the flow is changed in the radial direction, and the air flows between the outer cylinder portion 5a and the disk portion 5b. It is pumped out of the fan through the opening formed between it, so that it can supply airflow over a range of 360 degrees. Therefore, for example, by placing the electric fan according to the present embodiment in the center of the room, it is possible to send an appropriate amount of wind to the people around the electric fan. Further, according to the present embodiment, unlike the related art, since there is no link mechanism for swinging, the structure can be simplified, and the reliability can be improved at low cost.

By the way, there are cases where there are few people around the fan and there are cases where there are people who do not like the wind of the fan. In such a case, if the airflow is supplied over 360 degrees around the electric fan as in the present embodiment, a problem occurs. According to the modified example described below, such inconvenience can be avoided.

FIG. 2 is a perspective view showing a part of a fan according to a modification. A part of the cover 5 in the circumferential direction is covered between the outer cylinder part 5a and the disk part 5b,
A shutter 5f is provided. The shutter 5f is attached to the outside of the lattice portion 5c as follows.

FIG. 3 is a perspective view of the shutter plate 5f as viewed from the back. As shown in FIG. 3, the shutter plate 5f is curved corresponding to the outer periphery of the disk portion 5b, and has a hook-like portion 5g that is bent inward at the center of both ends. As shown in FIG. 2, the hook-shaped portion 5g is
The shutter plate 5
f can be attached.

When the shutter plate 5f is attached to the outside of the lattice portion 5c in this way to partially cover the opening between the disk portion 5b and the outer cylinder portion 5a, the fan 4
Even if (FIG. 1) rotates, no airflow is sent out of the shutter plate 5f. Therefore, when there is a person who does not like the wind of the electric fan, the shutter plate 5f may be arranged in a direction where the wind does not hit the person. It should be noted that by increasing or decreasing the number of shutter plates 5f attached to the lattice portion 5c, the range where the wind does not hit can be enlarged or reduced.

Further, as another modified example, a shutter plate 5f
A guide groove is formed in the outer periphery of the disk portion 5b and the upper end of the outer cylinder portion 5a, for example, and the shutter plate is slidable along the guide groove. It is also possible to use In such a case, if the shutter plate is divided into two parts, a fixed part and a slide part, by adjusting the degree of superposition, it is possible to enlarge or reduce the area where the wind does not hit around the fan.

As described above, the present invention has been described with reference to the embodiments. However, the present invention should not be construed as being limited to the above embodiments, and it is needless to say that modifications and improvements can be made as appropriate. is there. For example, the lattice part 5c and the wire netting 5d
Although it is composed of a large number of wires, it may be composed of a large number of beams or a porous plate as long as its rigidity is ensured.

[0020]

According to the fan of the present invention, there is provided a motor having a rotating shaft extending in the vertical direction, a fan attached to the rotating shaft of the motor, and a cover for covering the fan. An outer envelope portion provided radially outside the fan, a deflecting portion arranged in the axial direction of the fan, and an opening formed between the outer envelope portion and the deflecting portion, The air introduced into the cover by the fan is deflected in the radial direction of the fan by the deflecting unit and is discharged to the outside through the opening. Can be sent out, and if a fan is placed in the center of the room, the wind can be supplied to everyone in the room.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a fan according to an embodiment.

FIG. 2 is a perspective view showing a part of a fan according to a modification.

FIG. 3 is a perspective view of a shutter plate 5f as viewed from the back.

[Explanation of symbols]

 1 base 2 support 3 drive motor 5 cover 5f shutter

Claims (2)

[Claims] 1. A motor having a rotating shaft extending in a vertical direction, a fan attached to the rotating shaft of the motor, and a cover for covering the fan, wherein the cover is radially outside of the fan. An outer packet portion provided in the cover, a deflecting portion arranged in the axial direction of the fan, and an opening formed between the outer packet portion and the deflecting portion, wherein the rotating fan is inside the cover. The electric fan, wherein the introduced air is deflected by the deflecting unit in a radial direction of the fan, and is discharged to the outside through the opening. 2. The electric fan according to claim 1, wherein a shutter for restricting passage of the air is provided in the opening.