JPH0111996Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a blower that can change the rotational speed of a wind direction changing vane that rotates based on wind pressure.

Conventionally, blowers equipped with wind direction changing blades that are rotated by the forced rotating air flow generated by an axial fan have been published in domestic and foreign publications as well as products, but most of them have a wind direction changing blade whose rotational speed is constant. It was hot. Furthermore, Japanese Utility Model Publication No. 35-8954 discloses a system in which the rotational speed of the wind direction changing vane can be changed by appropriately changing the braking force due to frictional force.
In addition to requiring a complicated mechanism, the frictional force changes with long-term use.

In view of the above points, the purpose of this project is to provide a blower in which the wind direction changing vanes can be used as appropriate at a rotation speed that suits the user's preference. The wind direction changing blade plate is equipped with a wind direction changing blade plate that rotates under pressure, and the wind direction changing blade plate is provided with a large number of wind direction changing blades arranged in parallel. The rotary speed of the wind direction changing blade plate can be changed by attaching freely interposed adjustable movable blades and appropriately changing the angle of the adjustable movable blades with respect to the wind.

The present invention will be explained below based on the embodiments shown in FIGS. 1 to 8. Note that the principle of rotation of the wind direction changing vane and the principle of change of rotational speed due to the wind pressure generated in an axial fan are the same as the explanation given in Japanese Patent Application No. 57-25125, so in this application, is omitted.

The blower 1 includes a synthetic resin box-shaped casing consisting of a front case 2a and a rear case 2b, a wind tunnel 3 formed within the casing, a motor 4 supported within the wind tunnel 3, and a rotating shaft of the motor 4. 5, a guard 7 installed on the suction side of the wind tunnel 3, and a wind direction changing vane 8 rotatably supported on the outlet side of the wind tunnel 3. The mounting portion 9 of the motor 4 is supported by a wide support rod 10 extending from the wind tunnel 3. The support rod 10 has a plate shape and functions to correct and reduce the torsion angle of the forced rotational airflow generated by the axial fan 6. A shaft plate 13 having a protruding pivot 12 for removably supporting the wind direction changing vane 8 with a spinner 11 is mounted on the surface of the mounting portion 9 opposite to the surface on which the motor 4 is mounted. There is.

A plurality of wind direction changing blades 8a are formed in parallel on the outer peripheral portion of the wind direction changing blade plate 8, and a plurality of wind direction changing blades 8b are formed radially on the inner peripheral portion. The wind direction changing blades 8a formed in parallel are formed such that the angle of inclination increases from one wind direction changing blade to the other wind direction changing blade. The radially shaped wind direction changing blades 8b are formed with a constant inclination angle. A reinforcing bar 14 is integrally formed at the center of the lower side of the wind direction changing blade 8a and is perpendicular to the wind direction changing blade 8a. By forming the wind direction changing vane 8 as described above, the wind direction changing vane 8 is rotated to the right by the wind generated by the axial fan 6 at a substantially constant low speed. In addition, a separate adjustment movable blade 15 is provided at the upper center of the wind direction changing blade 8a of the wind direction changing blade plate 8.
is attached so that it can rotate freely. The adjustable movable blade 15 is shaped like a comb, and has elastic locking claws 16 formed at both ends. A substantially V-shaped notch 17 is provided at the front edge of the wind direction changing blade 8a, which the adjustable movable blade 15 comes into contact with.
is formed. A substantially fan-shaped notch 1 is provided at the rear edge of the wind direction changing blade 8a with which the elastic locking claw piece 16 engages.
8 is formed. The adjusting movable blade 15 bends the elastic locking claw piece 16 and pushes it between the wind direction changing blades 8a as shown in FIG. Lock it. In this state, the adjustment movable blade 15 can be rotated back and forth as shown by the arrow in FIG. The angle of inclination can be adjusted. Further, the adjustment movable blade 15 can be held at the adjustment rotation position by the friction force caused by the pressing of the locking claw piece 16 against the wind direction changing blade 8a and the clamping of the wind direction changing blade 8a, and cannot be rotated by wind pressure. do not have.

Next, the operation will be explained based on FIGS. 7 to 9. When the adjusting movable blade 15 is positioned parallel to the wind, the adjusting movable blade 15 has the wind direction changing blade plate 8.
A force contributing to the rotation of the wind direction changing plate 8 acts, and the wind direction changing plate 8 rotates to the right at the substantially constant low speed described above. Next, as shown in FIG.
A force F ₇ is applied which contributes to rotating the wind direction changing blade 8 clockwise, and the wind direction changing vane 8 rotates clockwise at a substantially constant medium speed. As shown in FIG. 9, when the adjustable movable blade 15 is tilted by an angle θ+α degrees with respect to the wind, a force F ₉ (>F ₇ ) that contributes to rotating the wind direction changing blade 8 to the right acts on the adjustable movable blade 15. , the wind direction changing vane plate 8
rotates to the right at a nearly constant high speed. As shown in FIG. 8, when the movable adjustable blade 15 is tilted in the opposite direction to the above angle by an angle α-θ degree with respect to the wind, a force −F that contributes to rotating the wind direction changing blade 8 to the left is exerted on the adjustable movable blade 15. ₈ acts, and when -F ₈ becomes larger than the force that attempts to rotate the wind direction changing vane 8 to the right, it rotates to the left. The above-mentioned adjustable movable blade 15
Since the inclination angle of the wind direction changing vane 8 can be changed steplessly, the wind direction changing vane 8 can also be changed from high-speed clockwise rotation to low-speed counterclockwise rotation.

Although the locking claw pieces 16 of the adjustable movable blade 15 are locked in the notches 18, the locking claws 16 may be arranged in an arcuate manner, or may be articulated and rotated. Further, the adjustment movable blade 15 may be attached to the side of the wind direction changing blade 8, and the number of blades may be not one but a plurality.

As described above, the present invention includes an axial fan and a wind direction changing vane that rotates under the pressure of the wind generated by the axial fan, and the wind direction changing vane has a large number of wind direction changing blades arranged in parallel. It is equipped with adjustable movable blades that are substantially orthogonal to the wind direction changing blades and are rotatably interposed between the blades, and by adjusting the rotation of the adjustable movable blades, it is suitable for use. It has great practical effects, such as being able to change the direction of air flow at different speeds, making it easy to use.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the proposed blower, Fig. 2 is a front view of the same, Fig. 3 is a sectional view of the main part while installing the adjustable movable blade, Fig. 4 is a sectional view of the main part, and Fig. 5 is the same as Fig. 4. Fig. 6 is an exploded perspective view of main parts, Fig. 7 is a view taken in the direction of arrow V.
9 to 9 are cross-sectional views of the adjustable movable blade in different inclined usage states. 1... Blower, 6... Axial flow fan, 8... Wind direction changing blade plate, 15... Adjustable movable blade.

Claims (1)

[Scope of utility model registration request] It is equipped with an axial fan and a wind direction changing blade that obtains rotational force from the wind pressure generated by the axial fan and changes the direction of the wind flow. A blower comprising a large number of wind direction changing blades arranged in parallel, and the wind direction changing blades are equipped with adjustable movable blades that are substantially perpendicular to the wind direction changing blades and can freely change the inclination angle with respect to the wind. .