JPS58220995A - Blower - Google Patents

Abstract

PURPOSE:To rotate a wind direction changing blade plate at a fixed speed, by mounting a brake adjusting movable blade, in which a tilt angle is changed in accordance with a change of wind pressure, to the wind direction changing blade plate. CONSTITUTION:If an axial flow fan 6 is rotated at a low speed, force is acted on wind direction changing blades 8a, 8b and a movable blade 15 in accordance with their tilt angle, and a wind direction changing blade plate 8 is rotated clockwise at an almost fixed low speed. If a speed of the fan 6 is increased, a rate of increase of force assisting clockwise rotation applied to the blade plate 8 is increased higher than the rate of increase of force assisting counter clockwise rotation, and larger brake force is applied, in consequence the blade plate 8 rotates at an almost fixed speed in no relation to the speed of the fan 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blower equipped with a wind direction changing vane that rotates under wind pressure.

Conventionally, blowers equipped with wind direction changing vanes that are rotated by the forced rotational airflow generated by axial fans have been published in domestic and international publications and products, but the flying pressure caused by axial fans, so-called axial fan If the rotational speed is constant, the rotational speed of the wind direction changing vane is approximately constant. However, when the rotational speed of the axial fan changes, the rotational speed of the wind direction changing blade also changes accordingly.

In view of the above points, an object of the present invention is to provide a blower equipped with a wind direction changing blade plate that maintains a nearly constant rotational speed even if the rotational speed of the axial fan changes. The structure includes movable braking adjustment vanes whose inclination angle changes in response to changes in pressure.

The present invention will be explained below based on the embodiments shown in FIGS. 1 to 8. The principle of rotation of the wind direction changing vanes and the principle of braking due to the wind pressure generated in the axial fan are the same as those described in Japanese Patent Application No. 57-25126, so the present application It is omitted here.

Air blower 1fi (11 is the target case (214L) and rear case (
2b], a box-shaped casing made of synthetic resin, a wind tunnel (3) formed in the casing, a motor (4) supported in the wind tunnel (3), and a rotation of the motor (4). shaft(
5) Axial flow fan 16) installed in K and the wind tunnel (3)
The wind tunnel (3) is installed on the suction side of the wind tunnel (17).
The air outlet 1111 consists of a leg direction changing plate (8) which is rotatably supported.

The mounting portion (9) of the motor (4) is supported by a wide support rod i11 extending from the wind tunnel (3). The support lever has a plate shape and functions to correct and reduce the twist angle of the forced rotational air flow generated by the axial fan 16). A pivot tl for freely supporting the wind direction changing vane plate (8) with a spinner αυ is provided on the opposite surface of the Journal Editorial Department (9) to the surface on which the motor (4) described in 11j is attached. A shaft plate fi3 with a protruding 'lJ is attached.

A plurality of wind direction changing blades (811f) are formed in parallel on the outer circumferential portion of the wind direction changing vane plate (8), and antisymmetric wind direction changing blades (8b) are formed radially on the inner circumferential 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. 8
b) is formed with a constant oblique angle. At the center of the lower side of the wind direction changing blade (8a), there is a T that is perpendicular to the wind direction changing blade (8a).
A reinforcing crosspiece I is integrally formed. The wind direction changing blade plate (
A separate brake adjustment movable blade +151 is rotatably mounted on the upper center of the wind direction changing blade (8a) of 8). The movable blade (151) is shaped like a comb, and has pivots 4+ at both ends.
An elastic locking piece 07) having a groove II is formed.

The forward direction change IN (8&
) is formed with a substantially V-shaped notch (one mallet).The wind direction changing blade (8a) facing the locking piece (I7) has a bearing hole in which the pivot Qe is pivotally supported. The movable vane [151 bends the locking piece (1?) and pushes it between the wind direction changing vanes (8a), and as shown in FIG. The movable Hf19 is inserted into the bearing hole Q9 and is supported by the shaft.
IIIIrc is attached so that it can freely rotate without resistance within the contact range and within the angle β-6 degrees shown in Fig. 6 and Fig. 8. The movable wing fi9 returns to its inclination angle The movable N(
151, the spring circle is held in the above-mentioned state unless an external force of resistance T acts on it.The spring (2) is a coiled spring, and one end of the spring is locked to the movable blade opening 9. The hole (2DK engages), and the other end is engaged with the locking piece 12 of the wind direction changing blade (8a).

Next, the effect will be explained. When the axial fan (6) rotates at a low speed, a force that contributes to rightward and leftward rotation acts on the wind direction change ji (8a) (8b) and the movable Na 51 according to their inclination angles, and the river direction changes. The change vane (8) rotates clockwise at a substantially constant low speed. At this time, 11J Kishi rotor blade 1
Although the car F6 that contributes to counterclockwise rotation acts on 151, the force of the spring (2) does not cause the rotation to be strong. Next, when the rotational speed of the axial fan (6) increases and rotates at high speed, the wind direction changing blades (8a) (8b) contribute to rotations in the rightward and leftward directions that increase according to their inclination angles. As a result, the wind direction changing vane 18) tries to rotate with a slight increase in speed. However, when the force applied to the movable blade port exceeds the force of the spring t2I, its inclination angle increases and it rotates to β degree. When the front ε movable blade fi51 is tilted to β degree, the force contributing to left rotation increases to −F8, and this increase exceeds the increase when the movable blade (151) maintains the tilt angle α degree. The axial fan (6
) increases, the rate of increase in the force that contributes to rotation in the left direction increases more than the rate of increase in the force that contributes to rotation in the right direction, which is applied to the wind direction changing plate (8), and the braking force becomes larger. By adding the wind direction changing vane (8) to the axial flow fan (6)
It rotates at a nearly constant speed regardless of the speed of the

In addition, the above-mentioned 11J wing (15) is not limited to the structure and mounting location of this embodiment, and the above-mentioned river direction changing wing (8
It may be attached to the side of the river direction changing wing (8a).
Alternatively, the wind direction change 1 (8b) may also serve as a movable blade. Further, a plurality of movable wings may be provided.

As described above, the present invention is equipped with a braking adjustment movable blade whose angle of inclination changes in degrees Celsius in response to changes in leg pressure on a direction changer plate that rotates under wind pressure. Regardless of the number, the oil has the effect of being able to rotate the vanes at a constant speed.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the feeding machine of the present invention, Fig. 2 is a front view of the feeding machine, and Fig.
85. 1 is an exploded perspective view of the main part, Fig. 4 is a sectional view of the main part, and Fig. 5 is a sectional view of the main part.
The figure is a plan view of the main part of the movable blade in the minimum #4 tilted state, Figure 6 is a diagram showing the force relationship in the same state, Figure 7 is a plan view of the main part of the movable blade in the maximum tilt state, and Figure 8 is the same state. There is a diagram that shows the power relationship. (1)...Blower, (6)...Axial fan, (8)
...Wind direction changing vane, FI9... Brake run adjustment movable blade Applicant: Sanyo Electric Co., Ltd. Figure 1 Figure 2 Figure 8 Figure 6 Figure 7

Claims (1)

[Claims] 1. Equipped with an axial fan and a wind direction changing blade plate that rotates under the pressure of the wind generated by the axial fan and has a large number of wind direction changing blades, and the wind direction changing plate has a number of wind direction changing blades. A blower equipped with brake-adjustable movable blades whose inclination angle changes according to the change in angle.