JPS63180040A - Air flowing direction controller - Google Patents

Abstract

PURPOSE:To make it possible to vary the vortex shape discharge route pattern and to control the peripheral speed so as to improve the comfortableness by constituting the controller so that a motor for rotating a shielding plate is driven on a rotational position signal of a motor for shifting the shielding plate. CONSTITUTION:Between drive motors 16 and 23 for shifting a shielding plate 6 for carrying out the control and for rotating the same, the rotating motor 23 is driven on the rotational position signal of the shifting motor 16. for this reason, it is possible to vary in various ways the pattern of the vortex shape discharge route. Further, particularly by delaying the rotation as the flowing direction approaches the outside of the vortex, the peripheral speed can be subjected to a predetermined control. Accordingly, by these procedures more homogeneous discharge to a space to be air-conditioned can be performed, and hence comfortableness can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a flow direction control device used in a duct outlet, an air conditioner outlet, etc.

2. Description of the Related Art Conventionally, as a means for controlling the direction of a flow flowing out from a circular outlet, there has been known a method disclosed in Japanese Patent Application Laid-open No. 175810/1983. This is a system in which a trumpet-shaped guide wall is provided at the exit of a circular nozzle, and direction control is performed by a shield plate placed upstream of the nozzle.In particular, by using a screw feed structure to move the shield plate, The blow direction was controlled in a spiral manner.

Problems to be Solved by the Invention However, with this method, since the shield plate is fed by screws, only a fixed spiral pattern can be obtained. Moreover, it has the disadvantage that the circumferential speed becomes faster on the outer side of the spiral path.

Means for Solving the Problems In the present invention, the rotation and movement of the shield plate are driven by different drive sources. Between these drive sources, in response to the movement of the shield plate, that is,
The configuration is such that the rotation speed of the shield plate can be controlled to decrease as the shield plate approaches the nozzle.

Operation With the above configuration, it is possible to freely change the spiral pattern in the spiral blowout control. Further, when the flow direction changes along the spiral path, it is possible to realize a blowout in which the circumferential velocity remains approximately constant.

Embodiment Next, an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

1 is a flow direction control device, and 2 is a cylindrical flow path forming this. A is a sharply constricted nozzle portion provided at one end of this flow path, and has a circular outlet portion 4.

Reference numeral 5 designates a gradually expanding guide wall formed on the downstream side of the outlet portion 4. A shielding plate 6 is disposed upstream of the outlet portion 4, and has the shape of a cylinder with a portion cut away.

The shield plate 6 is connected to a hollow holding shaft 8 by a support shaft 7. The holding shaft 8 has a disk portion 9 at its upstream end, and the disk portion 9 has a cylindrical portion 10 on the outside of the hollow holding shaft 8.
have. Further, a slit-shaped groove portion 11 is formed in a part of the holding shaft 8. This holding shaft 8 is connected to the cylindrical flow path 2
A bearing provided on a support member 12 fixed to is supported by a portion 13 so as to be rotatable and movable in the axial direction.

14 is an annular portion provided on the support member 12.

A coil spring 15 is disposed inside the cylindrical portion 10, and urges the disk portion 9, that is, the holding shaft 8, upward against the annular portion 14 whose position is fixed.

16 is a motor for vertically moving the holding shaft 8, and is fixed to a pedestal 17 fixed to the cylindrical channel 2. motor 16
A potentiometer 18 for detecting the rotational position is mounted on the shaft 18.
' is added. Further, a cam 19 is coupled to the shaft 1B, and the cam 19 is in contact with the disc portion 9 of the holding shaft 8.

A rotating shaft 20 passes through the inside of the hollow holding shaft 8. The rotating shaft 20 has a protrusion 21 that can move in the axial direction in the groove 11 of the holding shaft 8. Coupling portion 2 capable of axial movement and integral rotation with rotating shaft 20
2 is formed. Matoko rotating shaft 20 is a rotating motor 2
It is connected to the shaft 24 of No. 3 by a connecting member 25. The motor 23 is fixed to a pedestal 27 of a support member 26 fixed to the cylindrical channel 2 .

28 is a rotational position signal detection circuit based on the potentiometer 18', 29 is a speed control signal generation circuit, and 30 is a rotational motor drive circuit, which together control the movement of the downward movement motor and the rotational motor. A signal circuit 31 for interlocking is formed.

Next, the operation will be described.

FIG. 1 shows a state in which a portion of the cam 19 is in contact with the disk portion 9, and the coil spring 15 is completely pressed downward. A shield plate 6 coupled to the support shaft 7 of the holding shaft 8
is in a state where it is completely pushed down.
The downstream end of the outlet portion 4 is in contact with the outer edge of the circular outlet portion 4 .

The flow A flowing in from above enters the cylindrical flow path 2, but since the back of the shield plate 6 is partitioned off by the shield plate 6, no flow from this area to the outlet portion 4 occurs.

Therefore, the flow passing through the outlet section 4 is mainly formed by a flow white 1 in a straight direction and a flow tLs2 directed by the sharply constricted nozzle section 3. The flow B2 pushes the flow B1 toward the shielding plate 6, and forms a flow C toward a region of the guide wall 5 near the portion where the shielding plate 6 is present.

This flow C strongly adheres to the guide wall 5 and finally flows out as a flow o deflected at a wide angle.

Figure 2 shows that the shaft 18 of the vertical movement motor 16 rotates and the cam 1
9 is in a state where part b is in contact with the disc part 9, and the coil spring 15 is in a state where it is slightly pressed downward. Holding shaft 8
The downstream end of the shielding plate 6 connected to the support shaft 7 has a clearance h between it and the circular outlet part 4. In this state, a flow B3 is generated from behind the baffle plate 6 towards the outlet portion 4 from the area of the clearance h. Therefore, the flow passing through the circular outlet section 4 will be biased to the left by the flow B3 than in the case of FIG. 1, and the flow downstream of the outlet section 4 will be slightly shallower than in the case of FIG. This becomes the angular flow C. This flow C also tries to adhere to the guide wall 5, but since the angle is shallow, a large deflection does not occur as shown in FIG. 1, and a deflection flow D becomes slightly shallower.

In the above explanation of FIG. 1.2, the rotation of the shaft 24 of the rotary motor 23 (although this was not mentioned, in the present invention, when the shaft 18 of the vertical movement motor 16 rotates, the potentiometer 1
The rotational position signal detection circuit 28 operates based on the signal 8', and the speed control signal generation circuit 29 operates the cam 19 based on this signal.
A signal corresponding to the position nl is generated, which causes the rotation motor drive circuit 3o to operate, and the rotation speed of the shaft 24 of the rotation motor 23 to be determined. Cam 19 is 1→f3-+
6, the deflection angle of the flow changes from the state shown in FIG. 1 to the state shown in FIG. 2, and then to the straight state. This movement of the cam 19 corresponds to the clearance h between the downstream end of the shield plate 6 and the outlet section 4.

Now consider a graph in Figure 5 (as shown here), with the horizontal axis representing the clearance h and the vertical axis representing the number of revolutions of the rotating motor 23 for a half cycle of the moving motor. When the circuit 29 is set as shown in Figure 5 1, the deflection path seen from the flow outlet side exhibits a spiral pattern as shown in Figure 6A. When the speed control signal generation circuit 29 is set as shown in FIG. 5, the deflection path becomes the pattern shown in FIG. You can take it.

Furthermore, when the speed control signal generation circuit 29 is set as shown in FIG. By doing so, it becomes possible to control the direction of the spiral pattern while keeping the circumferential speed relatively constant.

Effects of the Invention As described above, in the present invention, in a control device that performs directional control by controlling the attachment of a gradually enlarged shape to a guide wall, there is a Since the rotary motor is driven based on the rotational position signal of the moving motor, it is possible to vary the pattern of the spiral blowout path. In particular, by slowing down the rotation as the flow direction moves toward the outside of the spiral, it became possible to control the circumferential speed at a constant level. These make it possible to blow air more uniformly into the air-conditioned space, resulting in improved comfort.

[Brief explanation of the drawing]

1 and 2 are vertical sectional views showing the flow state in a flow direction control device according to an embodiment of the present invention, FIG. 3 is a front view of the cam, and FIG. 4 is a signal transmission path to the drive unit. FIG. 5 is a characteristic diagram showing the relationship between the clearance and the rotational speed of the rotation motor, and FIG. 6 is a diagram corresponding to FIG. 5 showing the movement path of the blowing flow. 1...Flow direction control device, 3.Old...rapid constriction-shaped nozzle part, 4...Circular outlet part, 5
...Guidance wall, 6...Shieling board, 8.
...Holding shaft, 16...Movement motor (drive part of holding shaft), 2o...Group/rotation shaft, 22...
・Connection part, 23. Old... Rotation motor (rotating shaft drive part), 31... Signal circuit. Name of agent: Patent attorney Toshio Nakao (1st person, 2nd person)
Figure 3 Figure 4 Figure 5 Figure 6

Claims (2)

[Claims] (1) A sharply constricted nozzle section with a circular outlet section, a guide wall provided on the downstream side of the nozzle section and shaped like a channel whose width gradually increases toward the downstream side, and a guide wall provided on the downstream side of the nozzle section with a shape that gradually increases the channel width toward the downstream side; A hollow holding shaft that supports the shielding plate and a rotating shaft passing through the inside of the shaft is provided, and a rotating shaft is provided between the holding shaft and the rotating shaft. A signal circuit is provided, which is movable in the axial direction of the rotating shaft and is integrated with the rotating shaft to form a rotatable coupling part, and which links the movements of the driving part of the rotating shaft and the driving part of the holding shaft. Flow direction control device. (2) The flow direction control device according to claim 1, wherein the signal circuit is configured to slow down the rotation of the rotary shaft as the shielding plate approaches the outlet portion due to movement of the holding shaft.