JPH0123679B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flow direction control device for a cross flow fan.

Conventionally, cross flow fans have had a rear guider and a stabilizer to form the flow, and it has been necessary to rotate both of these in order to control the flow direction. however,
In this case, these casing components are large and the deflection mechanism is large, so directional control over a wide angular range has not been achieved. In particular, we could not find anything that performs directional control over the entire circumference.

In order to eliminate the above-mentioned drawbacks, the present invention aims to realize flow direction control over the entire circumference of the fan without a large-scale configuration, by only rotating the control vanes provided inside the fan and the back guider outside the fan. That is.

In particular, the present invention has a structure in which the length of the back guider can be varied so that the blowout width and suction width, which are formed by the guider and the control vanes provided inside the fan, can be controlled independently of each other. It is something.

Furthermore, by configuring the back guider with only two slidable guiders, the flow width can be set with a simpler structure.

Furthermore, the back guider is made of a stretchable material to facilitate setting.

Hereinafter, one embodiment of the present invention will be explained in Figures 1 to 5.
This will be explained based on the diagram. 1 is a flow direction control device;
2 is a cross flow fan, and 3 is a motor.

End plates 4A, 4B of the cross flow fan 2
are bearings 7 and 8 provided on side plates 5 and 6, respectively.
It is rotatably supported. The end plate 4B is fixed to the shaft 10 of the motor 3, so that the cross flow fan 2 rotates together with the shaft 10 of the motor 3. The motor 3 is fixed to the side plate 6 by a motor support member 11. Also, the side plate 5 is the side plate 6
It is fixed by three pillars 12 erected at. 13 is a casing, which fixes the side plate 6. Further, a dial 14 for turning on and off the rotation of the motor 3 and a dial 15 for controlling the rotation speed are attached to the casing 13. Furthermore, an opening 16 is provided in the casing 13 for cooling the motor 3 by means of natural ventilation. Control vanes 17 are arranged inside the crossflow fan 2 . One rotating shaft 18 attached to the control vane 17 passes through the hollow part of the end plate 4A formed in the shape of a hollow shaft, and is rotatably held by a holding plate 19 fixed to the side plate 5. Further, a rotating shaft 20 attached to the other of the control vanes 17 is held in a recess 21 provided at an end of the shaft 10 of the motor 3 so as to be rotatable relative to the shaft 10. Both rotating shafts 18, 20 are
The shaft 10 of the motor 3 is rotatable around the same central axis of rotation, that is, the same central axis as the central axis of rotation of the cross flow fan 2 . This rotation is performed by a lever 22 fixed to the rotating shaft 18. The lever 22 is configured so that it can be locked at any position by a locking member 23 that is attached to the lever 22 and engages with the side plate 5.

Further, the control blade 17 has a substantially arc-shaped cross section, and is arranged such that both ends 24 and 25 are located near the inner periphery 26 of the cross flow fan 2.

27 is a back guider, 28 is a board guider, and shafts 29, 30 attached to both ends thereof are inserted into annular grooves 31, 32 provided in the side plates 5, 6. The shaft 29 is fixed to an extension 33 of the locking member 23. The substrate guider 28 is arranged to face the back surface portion 34 of the control vane 17 .

35 and 36 are first and second guiders, respectively. These guiders each have two slits 37, 38 and 39, 40, and screws 4 attached to the substrate guider 28.
1 and 42, the first guider 3
Reference numeral 5 denotes a blowout width, and a second dieder 36 is configured to be able to slide so that the suction width can be set independently and arbitrarily, and can be fixed by tightening screws 41 and 42. .

Based on the above configuration, the back guider 27 can be fixed at any position as the lever 22 rotates while maintaining a constant positional relationship with the control vane 17.

Next, the effect will be explained.

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 10 causes the cross flow fan 2 to rotate.
rotates. When the control vane 17 is in the position shown in FIG. 4, assuming that the direction of rotation of the crossflow fan 2 is clockwise as shown by arrow C, the low pressure vortex V also becomes a vortex with clockwise rotation. This vortex V is formed in the concave area of the control blade 17 because the control blade 17 has a substantially arcuate shape and both ends 24 and 25 of the control blade 17 are located near the inner periphery 26 of the cross flow fan 2. As a result, the flow at the back surface 34 of the control vane 17 is smaller than Xi than Xo.
However, due to the presence of the back guider 27, a flow with stronger directionality in both suction and blowout is formed compared to a case without the back guider 27.

The blowout width Wo and the suction width Wi are the first
The guider 35 and the second guider 36 can be slid independently of each other with respect to the substrate guider 28 to adjust the width to an arbitrary value.

FIG. 4 shows a case where both the first guider 35 and the second guider 36 are overlapped to a considerable extent on the board guider 28 side, and the blowout width Wo and the suction width Wi are shown in FIG.
Both have relatively wide settings. That is,
The flow is sucked in from a relatively wide area, and a relatively wide outlet flow is obtained.

In contrast to FIG. 4, FIG. 5 shows that both the first guider 35 and the second guider 36 are connected to the substrate guider 28.
This is the case where it is made to protrude more, and both the blowout width Wo and the suction width Wi are set to be relatively narrow. That is, the flow is sucked in from a relatively narrow region, and a relatively narrow outlet flow is obtained.

As can be seen from the structure of the rear guider 27 shown in FIG. 3, the first guider 35 and the second guider 36 can slide independently of each other with respect to the substrate guider 28. In addition, it is possible to arbitrarily set the combination of the blowout width Wo and the suction width Wi.

In the present invention, since the control vane 17 and the back guider 27 are configured to be rotated integrally by the lever 22, the control blade 17 and the back guider 27 can be rotated around the entire circumference while maintaining the blowout width and suction width based on the various settings described above. It is possible to control the direction of the flow over the entire area.

Next, a second embodiment will be explained with reference to FIG. 6. In this case, the back guider 27 does not include the substrate guider 28 shown in FIG. 3, and is composed only of the first guider 35 and the second guider 36. As in the first embodiment, the first guider 35 and the second guider 36 slide independently of each other and are fixed at arbitrary positions with screws 41 and 42.

The operation is the same as that shown in FIGS. 4 and 5, but in this case, the flow conditions as shown in FIGS. 4 and 5 can be set using fewer parts.

Next, referring to FIG. 7, a third embodiment will be described. In this case, the back guider 27 is formed of an extensible structure, and the respective shafts 29, 3 are connected by screws 41, 42 at an approximately central portion 43.
Fixed to 0. Reference numerals 44 and 45 are blow-out and suction-side guiders, respectively. The blow-off side guider 44 and the suction-side guider 45 can be fixed to the central portion 43 independently from each other and at arbitrary positions. Note that guide lines 46 and 47 are fixed to the central portion 43 so that these guiders 44 and 45 can expand and contract at certain positions from the outer periphery of the cross flow fan 2.
and 47 so as to be able to expand and contract.

The operation is basically the same as shown in Figures 4 and 5, but in this case the guider 4
4, 45 itself has elasticity, so the first,
As shown in the second embodiment, the troublesome positioning using screws does not occur.

Note that the unevenness of the bellows-like expandable body used in this configuration is such that it does not significantly disturb the flow or cause significant resistance.

In this embodiment, the arc portion of the control blade 17 passes through the rotation center of the cross flow fan 2, but this is not necessarily a necessary setting. It is essential that the low-pressure vortex V is restrained by the control vane 17, and if this condition is met, the arc portion may be deviated from the rotation center of the crossflow fan 2.

As is clear from the above description, the flow direction control device of the present invention integrally rotates the control vanes provided inside the fan and the back guider provided outside the fan, so that the flow direction control device rotates over the entire circumference of the cross flow fan. It controls the flow direction with good convergence, and in particular, by making the first and second guiders independently adjustable with respect to the fixed substrate guider provided on the back guider, the blowout width and suction width can be adjusted as desired. Even if there are obstacles around the flow direction control device, it is possible to set the flow state to avoid them, which is an excellent effect.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a flow direction control device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A' in FIG. 1, FIG. 3 is a perspective view of a back guider, FIG.
5 is a sectional view taken along line BB' in FIG. 2 showing the flow state of the cross flow fan at different setting positions of the back guider, and FIG. 6 is a perspective view of the back guider in the second embodiment of the present invention. FIG. 7 is a perspective view of a back guider in a third embodiment of the present invention. 1...Flow direction control device, 2...Cross flow fan, 3...Motor, 17...Control vane, 27
... Rear guider, 28 ... Board guider, 34
... Back part, 35 ... First guider, 36 ...
The second guider.

Claims (1)

[Scope of Claims] 1. A cross-flow fan and a motor are provided, and inside the cross-flow fan, substantially arc-shaped control vanes capable of restraining low-pressure vortices generated by the rotation of the fan are disposed, and outside of the fan, the A back guider is provided opposite to the back part of the control blade, the back guider is configured to be rotatable about the central axis of the fan together with the control blade, and the back guider is configured by the guider and the control plate. A flow direction control device having a structure in which the guider length can be varied so that the blowout width and the suction width can be controlled independently of each other. 2. The flow direction control device according to claim 1, wherein the back guider includes a substrate guider and first and second guiders that are independently slidable with respect to the substrate guider. 3. The flow direction control device according to claim 1, wherein the back guider is constituted by first and second guiders that are slidable independently of each other. 4. The flow direction control device according to claim 1, wherein the back guider is made of a stretchable material.