Japanese Patent Publication Gazette (translation)
Publication number: Sho 56-167897
Publication date: December 23, 1981
Application number: Sho 55-71978
Application date: May 28, 1980
Applicant: Tokyo Shibaura Electric Co., Ltd.
1. Name of the invention : Bladeless electric fan
2. Scope of patent requirements
1. An electric fan with a body and an air outlet ring. The air outlet ring is supported by the machine body, which is equipped with fan blades and a motor that drives the fan blades. The wind caused by the fan blades in the machine body flows into the air outlet ring, which is empty inside, and is blown out through the slits of the air outlet ring.
2. An electric fan that can adjust the up and down tilt angle of the air ring.
3. An electric fan that can adjust the wind ring and shake its head left and right.
3. Detailed description of the invention
This invention is mainly to improve the safety of electric fans.
The structure of an ordinary electric fan is basically a body, a motor part supported by the body, and a fan blade rotated by the motor. The fan blade
is covered by a protective net. Even if it is covered with a protective net, there are still dangers such as children reaching in, and the safety is not perfect.
In order to solve the above problems, this invention focuses on improving safety. The purpose of this invention is to provide a safer and
simpler design electric fan.
This invention is illustrated below with drawings. First, 1 in Figure 1 is the body. The lower part of the body 1 is a large drum 1a, the upper part is a small drum 1b, and the middle part is an inclined drum 1c. After installing the motor 2 downward from the lower opening, fix the motor 2 to the end of the part 3 protruding downward from the inside of the inclined cylinder 1c with screws 4
. 5 is the fan blade, which is installed in the large drum
1a of the body 1 and fixed to the end of the rotating shaft 2a of the motor 2 with bolts 6. 7 is a bottom plate fixed on the lower opening of the body 1 , 8 is an air suction port formed in the center of the bottom plate 7 , and 9 is a foot fixed on the bottom plate 7 . 10 is a rotatable cover-shaped groove part provided on the small barrel 1b
. There is an opening 11 below, and there are air outlets 12 on both sides of the upper protruding part 10a
, the air outlets 12 on both sides are connected to both ends of the circular air outlet ring 13, and can rotate with the groove part 10. Therefore, the air outlet ring 13
follows the groove part 10, and can adjust the up and down tilt angle or shake the head left and right on the body 1. As shown in Figure 2, the front half of the air outlet ring
13 is 13a, and the rear half whose inner diameter is smaller than the front half is 13b, and the interior is empty. The interior of the air outlet ring communicates with the interior of the body 1 through the air outlets 12 on both sides of the groove 10 . A forward circular slit 14 is formed inside the air outlet ring due to the difference in inner diameters of the front half 13a and the rear half 13b.
Then the actual function of the above structure is explained. Electric current is supplied to motor 2, motor 2 starts, fan blade 5 rotates, air is sucked into the body 1 from the suction port
8, and the sucked air flows into the upper part of the body 1 and passes through the groove 10 The air outlets 12 on both sides flow into the air outlet ring 13 , and the air flowing into the air outlet ring 13 is blown out from the circular slit 14 of the air outlet ring 13
.
Because the wind blown out from the slit 14 of the air outlet ring 13 is thin and strong, the air inside the air outlet ring 13 is also driven,
It feels like the wind comes from the outlet The actual air volume blown out of the entire space surrounded by the ring 13 is greater than the amount blown directly from the slit 14.
As mentioned above, because the fan blade 5 is installed in the body 1, it fully embodies the function of the electric fan and at the same time, children cannot touch it
. Moreover, the air outlet ring 13 on the body 1 does not rotate like the fan blades 5, so it is very safe even if it is touched.
In short, it is much safer to use than ordinary electric fans.
Moreover, in terms of aesthetics, it is easier to determine the shape than an ordinary
electric fan, so the design is simpler.
In addition to the above, this invention also has the following functions.
First, the up and down tilt angle of the air ring 13 can be adjusted.
Second, the wind ring 13 can be adjusted to move its left and right shaking head.
This invention is not limited to the above drawings. The air outlet ring 13 is not limited to a circular shape, as shown in Figure 3, it can also be made into a quadrangular shape.
As for other issues such as the presence or absence of grooves 10, they can be changed appropriately within the scope that does not deviate from the main points.
As mentioned above, the characteristic of this invention is that it has a body and an air outlet ring. The air outlet ring is supported by the body. The body is equipped with a fan blade and a motor that drives the fan blade. The wind caused by the leaves in the body flows into the air outlet ring, which is empty inside, and blows out from the slit of the air outlet ring
. Hence safer and simpler in design.
4. Brief explanation of the drawings
Figure 1 is an overall longitudinal section view of the invention, Figure 2 is a cross-section view of the air outlet ring, and Figure 3 is a different appearance of the invention. Out
The front view of the wind ring.
In the picture, 1 is the body, 2 is the motor, 5 is the fan blade, 13 is the air outlet ring, and 14 is the slit.
Applicant: Tokyo Shibaura Electric Co., Ltd.