JPS6411838B2 - - 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 in which a guide device is disposed inside are known. However, this was aimed at improving the efficiency of the fan through the positional relationship with the thorns and casing, and was not intended for directional control. Further, 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, thereby allowing the control vanes to be rotated in directions not seen in the conventional example. The purpose is to provide a control function, and in particular, by arranging the shaft of the control vane to pass through the drive shaft of the fan motor, the purpose is to facilitate the driving of the control vane.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 6.

1 is a flow direction control device. 2 is a cross flow fan, and 3 is a motor.

The end plates 4 and 4' of the cross flow fan 2 are
It is rotatably supported by bearings 7 and 8 provided on side plates 5 and 6, respectively. End plate 4'
is fixed to the shaft 10 of the motor 3, so that the cross flow fan 2 is fixed to the shaft 10 of the motor 3.
Rotates with 0.

The motor 3 is fixed to the side plate 6 by a motor support member 11. Further, the side plate 5 is fixed by three pillars 12 erected on the side plate 6.

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, the casing 13 is also provided with an opening 16 for cooling the motor 3 by natural ventilation.

Inside the crossflow fan 2, a control vane 1 is installed.
7 is placed. One rotating shaft 18 attached to the control vane 17 passes through a hollow part of the end plate 4 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 side of the control vane 17 passes through the hollow shaft 10 of the motor 3 and is rotatable in a recess in a support section 21 provided at the bottom of the casing 13. Supported.

The rotating shafts 18 and 20 are rotatable around the same central axis as the central axis of rotation of the shaft 10 of the motor 3, that is, 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.
is configured so that it can be locked at any position by a locking member 23 attached to a lever 22.

The control vane 17 disposed inside the crossflow fan 2 has a substantially arc-shaped cross section, and its radius R and opening angle θ are such that the low-pressure vortex generated by the rotation of the fan 2 flows into the concave portion of the control vane 17. The size is set so that it is restrained to the side.

Next, the operation will be described.

In FIG. 1, when dial 14 is turned on,
When the motor 3 rotates, the end plate 4' fixed to its shaft 10 rotates, thereby causing the cross flow fan 2 to rotate. When the control vane 17 is in the position shown in FIG. 3, if 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 a clockwise rotation flow, The flow outside the control vane 17 is generally directed in the direction indicated by arrow X. At this time, the low pressure vortex V
Since it is constrained to the concave side of 7, it is formed stably, and therefore the flow X is also generated in a stable state.

Next, rotate the lever 22 to control the control vane 17.
Suppose that it is rotated to the position shown in FIG. At this time, since there is no restraining member other than the control blade 17, the low-pressure vortex V rotates together with the control blade 17 while being restrained inside the control blade 17, and becomes stable at the position shown in FIG. 4. The flow outside the control vane 17 is
The flow is shown by arrow Y.

That is, the restraining member of the low pressure vortex V is the control vane 17.
Therefore, the position of the low-pressure vortex V can be moved to any position on the circumference of the cross flow fan 2 by only rotating the control vane 17, and this allows the flow outside the control vane 17 to be It is possible to direct the direction.

During such a flow deflection operation, the control vane 1
The rotating shaft 20 of the motor 3 passes through the hollow shaft 10 of the motor 3 and is supported by the support portion 21 without touching the shaft 10, and the rotating shaft 18 also passes through the hollow shaft of the end plate 4. Since the rotation system of the motor 3 can be controlled independently of the rotation system of the motor 3, the rotation system of the motor 3 can be controlled independently. This improves operability, durability, and stability compared to the case where the rotating shaft 20 of the control vane 17 is supported in a sliding state by providing a recess at the upper end of the shaft 10 instead of using the shaft 10 of the motor 3 as a hollow shaft. It is also excellent in terms of safety.

As a method of arranging the control vane 17, as shown in FIGS. 5 and 6, it is also possible to support it at a position eccentric from the rotating shafts 18 and 20.

Next, a second embodiment of the present invention will be described with reference to FIG. In this embodiment, the rotating shaft 20 of the control plate 17 in the first embodiment is connected to a control plate driving motor.

FIG. 7 shows the first embodiment shown in FIG. 2, with only the support structure for the control blade 17 being changed. That is, the rotation shaft 20 of the control vane 17 is connected to the control vane driving motor 2 via the coupling 24.
5 is connected to the shaft 26. 27 is motor 2
5 to the bottom of the outer case 13. Other parts are the same as in FIG.

Next, the operation will be explained.

When the control vane driving motor 25 is turned on with the motor 3 of the crossflow fan 2 being turned on, the control vane 17 starts rotating inside the fan 2 . This makes it possible to continuously change the flow emitted from the fan 2 over the entire circumference of the fan 2. Further, by using a motor 25 capable of forward and reverse rotation and controlling it with a drive circuit (not shown), it is possible to perform deflection control over a wide angle, such as forward and reverse control in the flow direction over the entire circumference.

In such a case, as a method of supporting the rotating shaft 20 of the control vane 17, if a method is adopted in which the rotating shaft 20 of the control vane 17 is supported slidably at the upper end of the shaft 10 of the motor 3, the drive motor 25 of the control vane 17 is supported by the side plate 5. In that case, the lead wire for the fan motor 3 and the lead wire for the drive motor 25 of the control vane 17 are separated vertically, and usually
However, in this embodiment, since both motors 3 and 25 are inside the casing 13,
This allows for a simpler configuration.

As is clear from the above description, the flow direction control device of the present invention controls the flow direction using the control vanes provided inside the crossflow fan, by passing one rotation axis of the control vane through the shaft of the fan motor. Since the control blade is supported independently from the shaft of the fan motor, the control blade has excellent operability, durability, and safety.

Furthermore, by connecting the control vane rotation shaft to the control vane drive motor in a state where it passes through the fan motor shaft, the wiring state when automatically driving the control vanes can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a flow direction control device according to the present invention, FIG. 2 is a sectional view taken along line A-A' in FIG. 1, and FIG.
FIG. 4 is a sectional view taken along line B-B' in FIG. 2, showing the flow state of the cross flow fan at different positions of the control vanes, and FIG. 5 is another embodiment of the control vane arrangement of the present invention. FIG. 6 is a sectional view showing the flow inside the cross flow fan when the control vane shown in FIG. It is a diagram. DESCRIPTION OF SYMBOLS 1...Flow direction control device, 2...Cross flow fan, 3...Fan motor, 10...Shaft of fan motor, 17...Control vane, 18, 20...Rotation axis of control vane, 21...Support Section 25... Control vane drive motor.

Claims (1)

[Scope of Claims] 1. Consisting of a cross flow fan and a fan motor, a control vane is disposed inside the fan, and the control vane has a cross-sectional shape that is approximately arcuate so as to restrain the low-pressure vortex of the fan. and has a rotating shaft that is rotatable in alignment with the axis of the fan, and the rotating shaft of the control vane on the motor side passes through the shaft of the motor and rotates outside the motor. A flow direction control device provided with a support capable of being held. 2. The flow direction control device according to claim 1, wherein the control vanes are arranged eccentrically from the axis of the fan. 3. The flow direction control device according to claim 1, wherein a control vane driving motor is attached to the motor-side rotating shaft of the control vane.