JPS60228844A - Airflow deflecting device - Google Patents

Abstract

PURPOSE:To operate a swing louver with fewer number of parts, reduce a space for equipping it and permit to make it compact by a method wherein a coil spring, made of shape memory alloy, is connected to an arm connected to the swing louver. CONSTITUTION:When a limit switch 14 is put ON by a control unit, electric current flows through a conduction circuit, the coil spring 12 is heated, it deforms into a contracting direction, the arm 11 connected to the coil spring 12 is moved to the direction shown by an arrow sign in the diagram and the swing louver 10 may be pivoted. When the limit switch 14 is put OFF after a predetermined time elapsed, the conduction circuit is interrupted, the heating of the coil spring 12 is stopped, airflow, blown off into a room, collides against the coil spring 12, the coil spring 12 is cooled to start transformation, it deforms to elongating direction, the arm connected to the coil spring 12 moves to the direction shown by the arrow sign in the diagram and thereby pivoting the swing louver 10 into opposite direction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an air deflection device disposed, for example, at the outlet of an air conditioner.

[Technical background of the invention]

Separate type near conditioner is #4! As shown in JK, there is an air outlet grille λ on the upper part of the front panel of the casing l of the indoor unit, and an air intake port 3 on the lower part of the front panel.
and an air suction port 3 inside the casing l.
A heat exchanger g and a fan device j are provided in the vicinity of the heat exchanger g and a fan device j is provided opposite to the heat exchanger g, so that hot or cold air heat exchanged when passing through the heat exchanger is blown into the room through the outlet grille. ing.

On the other hand, the swing loop provided on the above-mentioned outlet grille λ? - By reciprocating an arm whose one end is connected to a disk attached to the shaft of a motor, a rocking motion is performed and the airflow coming out of the outlet is biased.

[Problems with background technology]

However, the above-mentioned type of air deflection device has many components and requires a large installation space, which limits the size of the entire device (1+) and increases cost.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide an air deflection device that can operate a swing looper with a smaller number of parts and that can be made more compact by reducing the installation space.

[Summary of the invention]

The present invention connects a coil spring made of a shape memory alloy to an arm connected to a swing looper, and heats the coil spring to change the shape of the coil spring, causing the arm to reciprocate and swing the swing looper. This is what I did.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 10 denotes a swing loop 2- which is swingably attached to the air outlet of the near conditioner via a pin, and this swing looper /l!
The rear end side of 7 is connected to an arm /l that can reciprocate, and by reciprocating the arm //, the position shown in Fig. 1 directs the air downward and the position shown in Fig. 2 directs the air upward. The position can be determined by Swingru ζ-10.

On one end of the arm /l is a coil spring made of shape memory alloy, and on the other end is a normal coil spring /3.
are each layered.

That is, the arm /l is elastically supported within the casing.

As shown in FIG. 3, when the coil spring 12 is heated under a constant load, it is displaced at a transformation start point A6 to a high temperature phase (austenite phase), and the displacement ends at a transformation end point A8. Furthermore, when cooled, it has the characteristic that it is displaced at the transformation start point M8 to a low temperature phase (martensite phase), and the displacement ends at the transformation end point.

In other words, the coil spring 12 expands and contracts by heating and cooling the coil spring beyond the transformation temperature under an appropriate load.

- Force Both ends of the coil spring i2 are connected to a wiring S having a limit switch/da, and by turning on/off the limit switch IQ, current from the power source/B is applied to the coil spring 12. The temperature of the coil spring 12 is raised above the transformation starting point A6 by using Joule heat caused by electric resistance. Furthermore, during cooling, the temperature of the heating air is used to lower the temperature below the transformation starting point M6.

In contrast to the coil spring 12, the coil spring 13 is determined to satisfy the following conditions.

That is, if the spring force of the shape memory alloy coil spring at high temperature is FA-H, the spring force of the shape memory alloy coil spring at low temperature '1FA-C, and the spring force of a normal coil spring is FB, then FA -H>FB>FA-C.

Next, the effect will be explained.

When the limit switch/da is turned on by a control device (not shown), a current flows through the energized circuit, the coil spring 1 generates heat, and the coil spring 12 undergoes transformation from point ○ as shown in FIG. Initially, it deforms in the direction of contraction as shown in FIG. 2, and the arm // connected to this coil spring 12 moves in the direction indicated by the arrow, causing the swing route A-to to rotate.

When the limit switches and terminals are turned off after a predetermined period of time has elapsed, the current-carrying circuit is cut off and the heat generation of the coil spring 1 stops. When the coil spring 12 reaches the M8 point shown in Fig. 3, it begins to transform, and the coil spring 12 deforms in the direction of extension as shown in Fig. 1, and the arm connected to the coil spring 12 moves in the direction indicated by the arrow. This causes the Siswing Grouper I/O to rotate in the opposite direction to that shown in Figure 2.

By repeating the same action, you can create swing roots.
10 will automatically rotate.

In the above embodiments, the explanation has been made regarding the application to an air conditioner, but it goes without saying that the present invention can also be used in various electrical appliances such as a dehumidifier and a warm air fan.

Further, if the coil spring 12 is formed of a bidirectional shape memory alloy, that is, an alloy that reversibly changes shape between a low temperature phase and a high temperature phase, the coil spring 13 is not required.

〔Effect of the invention〕

As described above, according to the present invention, the number of parts required to drive the swing looper is reduced, and the installation space can be reduced, so that the entire device can be made more compact.

[Brief explanation of drawings]

Figures 1 and 2 are diagrams showing the operating state of the air deflection device according to the present invention, Figure 3 is a diagram showing the characteristics of a coil spring, and Figure 3 is a sectional view of a near conditioner incorporating the present invention. be. λ...Blowout/' Lil, 10 Swing Roots ζ-
1//...Arm, lλ...Coil spring, 13. Coil spring, /lI...Limit switch. Applicant's Representative Ino Mata Figure 1 Figure 2

Claims (1)

[Claims] In an air deflection device having swing roots swingably provided at an air outlet and an arm connected to the swing roots and reciprocating, a coil spring made of a shape memory alloy is attached to one end of the arm. What is claimed is: 1. An air deflection device comprising: 1 a heating device for heating the coil spring; and 1, a heating device for heating the coil spring, so that the syswin roots are made to swing by deformation of the coil spring.