JPS5937295A - Flow direction control device - Google Patents

Abstract

PURPOSE:To enable to control the flow direction under a condition wherein a wide range blow-off stream is formed, while a control blade, provided in a cross fan, is divided into a plurality of divisions in the lengthwise direction thereof and the respective control blades are arranged in different conditions in the directions thereof. CONSTITUTION:The control blades 17, arranged in the cross fan 2, are divided into three parts 17, 17b, 17c and are provided with substantially arced sections respectively. For a representative example, the control blade 17a is set at a position and a configuration capable of restricting a low-pressure vortex V generated by the rotation of the cross-flow fan 2 and the same settings are effected in the blades 17b, 17c. According to this method, a stream caused by the control blade 17 at the outside thereof is formed in stable from X toward Y as shown in the diagram. The stream, caused by the control blade 17a, flows into the direction P, the same, caused by the blade 17b, flows into the direction Q and the same by the blade 17c flows into the direction R. According to such arrangements, the wide range blow-off stream may be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a flow direction control device for a cross flow fan. The flow direction is controlled by dividing the fan into a plurality of parts and arranging each blade in a different direction to widen the blowing range from the fan.

Conventional Structure and Problems It has been known in the past that a guide device is disposed inside a cross-flow fan. However, this was aimed at improving the efficiency of the fan through its positional relationship with the casing, and was not intended for directional control. Furthermore, in such devices, the control blades are not divided into a plurality of parts in the axial direction of the fan, and the respective blades are not arranged in different directions.

Purpose of the Invention The present invention determines the position and shape of the control vanes so as to constrain the vortices of a crossflow fan, and by rotating the control vanes, it provides an unprecedented directional control function, and also controls the vanes in the axial direction. The object of the present invention is to obtain a flow direction control device that can widen the width of the flow direction and control the direction in a weeping state by dividing the flow direction into a plurality of parts and arranging the blades in different directions.

Structure of the Invention To achieve this object, the present invention includes a cross-flow fan and a fan motor, and inside the fan there is a Y-arc-shaped control section that restrains a low-pressure vortex generated by the rotation of the fan. The control blade is divided into a plurality of parts in the axial direction of the fan, and each blade has a different arc direction so as to generate a flow in a different direction.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to 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 of the cross flow fan 2 are rotatably supported by bearings 7 and 8 provided on the side plates 5 and 6, respectively. 4'
, 4'' is an intermediate partition plate. 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 1o of the motor 3. 11 to the side plate 6.

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. Also attached to the casing 13 are a dial 14 for turning on and off the rotation of the motor 3, and a dial 15 for controlling the number of rotations. Furthermore, the casing 13 is provided with an opening 16 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, the rotating shaft 2 attached to the other side of the control vane 17
0 is held in a recess 21 provided at the end of the shaft 10 of the motor 3 so as to be rotatable relative to the shaft 10. Both rotating shafts 18.degree. 2o are rotatable about the same center axis as the center axis of the rotation of the shaft 1o of the motor 3, that is, the center axis of the 20 rotations of the cross flow fan. This rotation is performed by a lever 22 fixed to the rotating shaft 18, and this lever 22 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. It is composed of

In this embodiment, the control blade 17 is longitudinally divided into three parts 17a, 17b, and 17c, as shown in FIG. 3, and partition plates 24 and 25 are installed between each blade. Further, each of the control vanes has a circular arc-shaped cross section. As a typical example, the arrangement of the blades 17a is shown in FIG. 4, and the control blade 17a is set in a position and shape that can restrain the low-pressure vortex (2) generated by 20 rotations of the cross flow fan. The same applies to these positions and shapes 17b and 17(+). Also, the respective control blades 17a.

17b and 17c are arranged to face different directions.

Next, the operation will be explained.

When the dial 14 is turned on, the cross flow fan 2 rotates as the axis of the motor 3 rotates by 1°.

Assuming that this rotation is clockwise as shown by arrow C in FIG. 4, the low pressure vortex V is also formed by clockwise rotation. Since the shape and position of the control vane 17a are set to constrain this low-pressure vortex V, the flow outside the control vane 17a is stably formed from X toward Y as shown in the figure.

In the present invention, a casing used in a conventional cross 70-fan is not disposed outside the cross flow fan 2, so the low pressure vortex V is formed according to the position of the control blade 17a, and the outer flow is also Corresponding to this, it is uniquely defined.

This also applies to the control vanes 17b and 17c. That is, in FIG. 5, the flow due to the control blade 17a occurs in the P direction, the flow due to the control blade 17b occurs in the Q direction, and the flow due to the control blade 17c occurs in the H direction. Furthermore, although the low-pressure vortices formed by these have different positions, as shown in Figure 3, there are partition plates 24 and 25 between each control vane, so they interfere with each other. There's nothing to do.

By arranging the control vanes 17a, 17b, and 17c in different directions in this way, it is possible to realize a wide range of blowout flows.

In addition, the control vanes 17a, 17b, and 17c are integrally constructed and can be directed in any direction by rotating the lever 22, so that while maintaining the wide range of blowout flow as described above, It is possible to control the direction of flow across the flow.

Next, a second embodiment will be explained with reference to FIG.

FIG. 6 uses the same control vanes as in the first embodiment, but the partition plates 24, 26 are integrated with the partition plates 4', 4'' of the cross flow fan 2.

The operation is the same as in the first embodiment, but in this case, the partition plate in the first embodiment and the partition plate are integrally formed, so the partition between the control vanes 17a17b and 17a is more secure. Since it is a cross flow fan 2
There is less interference between low pressure vortices in the longitudinal direction.゛Next, a third embodiment will be explained with reference to FIG.

, which extends the partition plates 4', 4'' of the cross-flow fan 2 to the outside of the fan 2 in the first or second embodiment.

The operation is the same as in the first and second embodiments, but in this case, the partition plates 4', 4'' are extended to the outside of the fan 2, so the control blades are different from the second embodiment. 17a,
The division of the flow generated by 17b and 17c is further ensured. Furthermore, this configuration not only reduces the interference between low-pressure vortices in the longitudinal direction of the cross-flow fan 2, but also further reduces the mutual influence of the outer flows.

Effects of the Invention As described above, according to the present invention, the control blade provided inside the crossflow fan is divided into a plurality of parts in the longitudinal direction, and the control blades are arranged in different directions. This has the effect that the flow direction can be controlled while a wide range of blowout flow is formed.

Further, by forming the partition plate of the control vane with the partition plate of the cross flow fan, mutual interference of low pressure vortices can be reduced.

Furthermore, by extending the partition plate of the cross 70-fan to the outside, it is possible to reduce mutual interference with the outside flow and obtain a more stable flow.

[Brief explanation of the drawing]

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 AA' in FIG. 1, FIG. 3 is a perspective view of a control vane, and FIG. 4 is a perspective view of a control vane. FIG. 6 is a cross-sectional view showing the flow direction from the flow direction control device in the present invention. FIG. FIG. 7 is a partially cutaway perspective view of a cross flow fan showing a third embodiment of the present invention. 1...Flow direction control device, 2...Cross flow fan, 3...Noah/motor, 4',
4"...Partition plate, 17.17a, 17b, 17
cm --- Control vane, 24°25... Division plate. Name of agent: Patent attorney Toshio Nakao and 1 other person
tm Figure 2 Figure 3yJ Figure 4 Figure 5 Figure 6/8 Figure 7

Claims (1)

[Scope of Claims] (1) A cross-flow fan and a fan motor are provided, and control blades having an arcuate cross section are disposed inside the fan to restrain low-pressure vortices generated by the rotation of the fan, and A flow direction control device in which the blades are divided into multiple parts in the axial direction of the fan, and each blade has a different direction of circular arc so that the flow occurs in a different direction〇(2) The control blade has a partition plate between adjacent blades. A flow direction control device according to claim 1, which is provided with: (3) The flow direction control device according to claim 2, wherein the partition plate is formed integrally with the control vane. (4) The flow direction control device according to claim 2, wherein the partition plate is integrally formed with the partition plate of the cross flow fan. (6) The flow direction control device according to claim 2, wherein the partition plate extends outside the cross flow fan.