JPS58128496A - Flow-direction controller - Google Patents

Abstract

PURPOSE:To enable deflection control in an arbitrary direction without generating the change of the characteristics such as amount of wind, noise etc. over the range of 360 deg. by controlling the low-pressure swirl in a cross-flow fan by means of a controlling blade only installed inside the fan. CONSTITUTION:A low-pressure swirl V' is stably formed in the concaved region of a controlling blade 17 by the revolution of a cross-flow fan 2, and a flow having the superior convergence is formed in a flow passage 29 between the controlling blade 17 and an inside guider 27. As a dividing guider 30 is present in the flow passage 29 , two divided flows Y1 and Y2 are formed, and the flow having a high efficiency can be obtained without foriming the unnecessary flow between the flows Y1 and Y2. As each width of flow Y1, Y2 is reduced, in comparison with the case where the dividing guider 30 is not present, the flow having the distinct direction performance can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flow direction control device for a crossflow fan, and its purpose is to control the vortex position and perform wide-angle direction control. .

Conventionally, crossflow fans in which a guide device is disposed inside are known. But this.

The purpose was solely to improve the efficiency of the fan through its positional relationship with the casing, and was not intended for directional control. Furthermore, in this case, since a guider is provided around the fan, the flow direction is regulated by the guider, making wide-angle directional control impossible.

The present invention determines the position and shape of the control vanes so as to constrain the vortices of the crossflow fan, eliminates the fan casing, and makes the control vanes rotatable from the outside of the fan, providing an unprecedented directional control function. The purpose of the present invention is to provide a flow direction control device that can provide a flow direction control device. In particular, a 3-page internal guider is placed on the back of the control vane, with the purpose of suppressing the dispersion of the flow flowing out from the fan and concentrating it. Furthermore, a sectioned guider is provided between the control vane and the internal guider, and the purpose is to obtain an efficient and highly directional flow. Furthermore, an embodiment of the present invention, which aims to obtain a wide flow by supporting the control blades offset from the rotation axis, will be described below with reference to FIGS. 1 to 6. do. 1 is a flow direction control device, 2 is a cross flow 7-ring, and 3 is a motor.

The end plates 4m and 4B of the crossflow fan 2 are rotatably supported by bearings 7 and 8 provided on the side plates 6 and 6, respectively. The end plate 4B is fixed to the shaft 10 of the motor 3, so that the cycloflow fan 2 rotates together with the shaft 1o of the motor 3. The motor 3 is fixed to the υ side plate 6 by a motor support member 11. Moreover, the side plate 6 is
It is fixed by three pillars 12 erected on the side plate 6.

A casing 13 fixes the side plate 6.

Also attached to the casing 13 are a dial 14 for turning on and off the rotation of the motor 3, and a dial 16 for controlling the number of rotations. Furthermore, casing 1
3 is also provided with an opening 16 for cooling the simulator 3 by natural ventilation. Cross 70 - A control blade 17 is arranged inside the fan 2 .

One rotating shaft 18 attached to this control vane 17
is a hollow end plate with 4 mm formed in the shape of a hollow shaft.

It is rotatably held by a holding plate 19 fixed to the side plate 6. Further, the rotating shaft 2o attached to the other side of the control vane 17 is rotatably held relative to the shaft 10 by a recess 21 provided at the end of the shaft 1o of the motor 3. There is. Both rotating shafts 18 and 20 are rotatable about the same central axis of rotation of the shaft 10 of the motor 3, that is, the same central axis of rotation of the cross 70 and the fan 2. This rotation is performed by a lever 22 fixed to the rotating shaft 18, and this lever 22
It is configured in six pages that can be locked at any position by a locking member 23 that is attached to the side plate 2 and engages with the side plate 6. The control blade 17 has a substantially arc-shaped cross section, and its radius R and opening angle θ are as follows.
The value is set to such a value that the low-pressure vortex generated by the rotation of the cross-flow fan 2 can be restrained. Further, the position of the control vane 17 is set so that its arcuate end portions 24, 25 are near the cross 70 and the inner circumference 26 of the fan 2 in order to contribute to restraining this low-pressure vortex.

Further, a curved internal guider 27 is provided on the back of the control vane 17.
is attached to the control vane 17 by four support rods 28, and can rotate integrally with the rotation of the control vane 17. In addition, the internal guider 27 has a cross 70-
- It is arranged near the inner periphery 26 of the fan 2, and its white direction is the same direction as the control blade 17.

Next, the operation will be described.

When the dial 14 is turned on in FIGS. 1 and 2,
The motor 3 rotates, and the rotation of the end plate 4B fixed to the shaft 1o causes the cycloflow fan 2 to rotate. When the control vane 17 is in position 6 as shown in FIG. It becomes a vortex with flow.

The radius R and the opening angle θ of the control blade 17 are set to a size that can restrain this low-pressure vortex, and the arc end portions 24 and 25 of the control blade 170
, the low-pressure vortex is stably restrained in the concave region of the control vane 17.

At this time, a flow shown by an arrow X is generated at the back of the control vane 17. If the internal guider 27 does not exist, the flow X becomes a dispersed flow with poor convergence because there is nothing to guide it other than the control vane 1″r.However, in the present invention, since the internal guider 27 is provided, the flow , the flow X flows through the flow path 2 between the control vane 17 and the internal guider 27.
9, it has good focusing properties.

Next, it is assumed that the lever 22 is rotated and the control vane 17 is rotated to the position shown in FIG. At the time of page 7, the low-pressure vortex V rotates together with the control blade 17 while being restrained inside the control blade 17 because there is no restraining member other than the control blade 17, and becomes stable at the position shown in FIG. 6. . At this time, since the internal guide 27 is rotating integrally with the control vane 17 by the support rod 28, the flow Y in the flow path 29 formed between the control vane 17 and the internal guide 27 is also
It is stably formed while maintaining good convergence.

That is, since the control blade 17 is the only restraining member for the low-pressure vortex V, the position of the low-pressure vortex V can be moved to any position on the circumference of the cross 70 and the fan 2 simply by rotating the control blade 17. This makes it possible to direct the flow behind the control vane 17 in any direction. In this case, in the present invention, an internal guide 27 is provided at the back of the control vane 17, and a flow path 29 is formed by the control vane 17 and the internal guide 27, so that the flow at the back of the control vane 17 can be focused. It can be maintained in good condition.

In addition, in this case, since there is no restraining body such as a guide on the outside of the fan, the air volume and JP-A-58-1
28496 (3) No changes in characteristic values such as noise occur.

Next, a second embodiment of the present invention will be explained with reference to FIG. This embodiment differs from the first embodiment in that a curved partition 3 is provided between the control vane 17 and the internal guide 27.
0 is set. The partition guide 30 is the support rod 3
1 is connected to the control vane 17, and the support rod 3 is connected to the control vane 17.
2, it is connected to the internal guide 27. That is, the control vane 17. The internal guide 27 and the section guider field are configured to be integrally rotatable. The compartment guide 30 is arranged at a position so as to substantially equally divide the flow path 29 formed by the control vane 17 and the internal guide 27.

The operation is almost the same as that of the first embodiment, and a low-pressure vortex V' is stably formed in the concave region of the control vane 17 due to the rotation of the crossflow fan 2, and the control vane 17 and the internal gear 27 are A flow with good convergence is generated in the flow path 29 between the two. However, in this case, since the partition guide 30 exists in the flow path 29, the flow is divided into two parts, Yl and τ20, forming nine pages. In other words, if the partition guide 3o does not exist, an unnecessary secondary flow may occur in the radial direction of the cross 7c7--fan 72 due to non-uniformity of pressure distribution, flow velocity distribution, etc. within the flow path 29. However, in this embodiment, since the flow path 29 is divided by the partition guide 30,
An efficient flow can be obtained without generating unnecessary flow between the flows Yl and Y2. Furthermore, since the flow widths of each of Yl and 72 are smaller than in the case where there is no partition guide 30, a flow with clear directionality can be obtained.

As in the first embodiment, when the control vane 17 is rotated, the flow as described above is maintained.

In this second embodiment, a case is shown in which there is only one section guide 30, but it is also possible to arrange a plurality of sections depending on the size of the inner periphery of the cross-flow fan 2.

Next, a third embodiment of the present invention will be explained with reference to FIGS. 7 and 8. In this embodiment, the support position of the control vane 17 in the second embodiment is shifted from the rotation axis of the cross fan 10, -1 fan 2.

That is, 33 is a control vane, its support part 34m,
34B is offset from the rotating shaft 36B by a length l. This control vane 27 is the control vane 17 in FIG.
The rotating shafts 36 and 36B are respectively attached to the positions of the rotating shafts 18 and 20. Control is carried out in the same manner as in the second embodiment.

Gohane 33 is the cross flow fan 2 using the lever 22.
It can be rotated around the central axis of rotation and locked at any position.

The control blade 33 has a cross-section shaped like an arc, and its radius R' and opening angle θ' are determined by the cross flow.
The value is set to such a value that the low-pressure vortex generated by the rotation of the fan 2 can be restrained. Further, the position of the control vane 33 is set so that its arcuate ends 36 and 37 are near the inner periphery 2e of the crossflow fan 2 in order to contribute to restraining this low pressure vortex.

In addition, a curved inner guide 38 is provided on the back of the control blade 33.
and section Gai Goo 39 are arranged.

11.

The internal gear 38 is the inner circumference 26 of the cross flow fan 2.
is placed near the control blade 3, and its white direction is the control blade 3.
It is in the same direction as 3. Further, the partition gator ′-39 is connected to the flow path 4 formed by the control vane 33 and the internal gator 38.
The flow path 40 of the flow path 40 and the flow path 40 are almost equally divided.

The compartment guide 39 is connected to the multi-control vane 33 by a support rod 41, and the internal guide 38 is connected to the support rod 42.
is combined with That is, the control vane 33. The internal guide 38 and the partition guide 39 are configured to be integrally rotatable.

The operation is almost the same as the second embodiment, and a low-pressure vortex V" is stably formed in the concave area of the multi-control vane 33 due to the rotation of the cross-flow fan 2, and the control vane 33 and the partition guide 39 are There is a flow between zl and partition 3
A flow z2 is formed between 9 and the internal flow 38.

Particularly in this case, the support portions 34 of the control vane 33, 34
B is deviated from the rotation center of the cross 70 and the fan 20.

In the above three embodiments, the rotation of the control vane 1 or 33 is performed manually using the lever 22, but it is also possible to directly connect the shaft of a small motor to the rotation shaft 18 or 36 of the control vane 17 or 33. For example, automatic flow direction change over 360 degrees.

is achieved. Furthermore, by using a motor that can rotate in forward and reverse directions, the air swing operation can be achieved without using a complicated link mechanism.

As is clear from the above description, the flow direction control device of the present invention is capable of controlling the low-pressure vortex of the crossflow fan using only the control vanes provided inside the fan, so that it can spread over a 360 degree range. Deflection control in any direction is possible with a simple force configuration without causing changes in characteristic values such as air volume and noise.

Further, by providing an internal guide, a flow with good convergence that suppresses monodispersion can be obtained.

Furthermore, a partition guide 134- is provided between the internal guide and the control vane.
By providing a shield, efficient and directional flow can be obtained.

Furthermore, by providing the control blade rotation axis offset from the rotation center of the fan, a wide flow can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a flow direction control device according to the present invention;
The figure is a sectional view of Moom' in Fig. 1, Fig. 3 is a perspective view of the control vane and internal gear, and Figs. 4 and 6 are BB' sectional views in Fig. 2. FIG. 6 is a sectional view of the second embodiment of the present invention, showing the flow state of the cross 70-fan at the blade position, and FIG. 7 is a cross-sectional view showing the flow state of the cross flow fan of the present invention Perspective view of control vanes in other embodiments, No. 8
The figure is a cross-sectional view showing the crossflow fan direction flow when the control vane of FIG. 7 is used. 1...Flow direction control device, 2...Crossflow fan, 3...Motor, 17, 33
・・・・・・Control vane, 1B, 20.35mm, 35B・
...Rotating axis %26...14 Beni I...Inner circumference, 27,38...Internal guide, 2
9.40...Flow path, 30.39...Division Gai Goo. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 4 Figure 7 1g5 Figure 6

Claims (3)

[Claims] (1) A cross-flow fan and a motor tut, in which a control vane and an internal guider are configured to be integrally rotatable around a rotation axis, and the control vane has a cross section that is approximately arcuate. and arranged at a position where low pressure vortices generated by the rotation of the fan can be restrained, and
The internal guider is formed into a curved surface in the same direction as the control blade, and is disposed near the inner periphery of the fan at the back of the control blade. (2) At least one section guider is disposed in the flow path formed by the control vane and the internal guider, and is configured to be integrally rotatable with the control vane and the internal guider. Flow direction control device as described in . (3) A flow direction control device according to claim 2, wherein the control blade is supported at a position eccentric to the rotation axis.