JPS6370042A - Device to change wind direction of air conditioner - Google Patents

Abstract

PURPOSE:To make it possible to change automatically the direction of the air from an air conditioner periodically at a certain time interval by using a spring made of shape memory metal and a bias spring which resists the former spring for regulating the angle of a vane of the air conditioner turning from left to right. CONSTITUTION:During the operation of an air conditioner 1 electric current is always passed through a spring 5 made of a shape memory alloy and its temperature rises gradually. When the spring temperature rises to a transformation temperature that is set, it overcomes the force of a bias spring 4 and pulls a connecting rod 17 and connecting rod 20 to the right through a guide bar 7. Vanes 14 turning from left to right thereby rotate round fulcrum pins 15, changing the direction of the wind passing through a main wind channel 29 to the left. At the same time the other end of the guide bar 7 rotates a lever 13 round a fulcrum pin 23 and the bias spring 4 is subject to elastic deformation and simultaneously it slides a damper 6 to release the shielding of a pilot wind channel 28 and sends part of the wind from a blower to the pilot wind channel. When this state is held for a certain time, the temperature of the spring 5 made of a shape memory alloy falls and goes through the transformation to become soft and small in strength, and then the spring recovers the original state by being overcome by the bias spring 4. This is repeated subsequently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner, and more particularly to a blow direction device for an air conditioner suitable for changing the blow direction from side to side at regular intervals.

[Conventional technology]

As a conventional device, as described in Utility Model Application No. 60-148544, a shape-memory alloy spring and a bias spring are combined, and this is connected to a tilting mechanism for an up-and-down blade for guiding air. One example is one that switches the direction of air blowing upward or downward.

[Problem that the invention seeks to solve]

According to the above-mentioned conventional technology, it is possible to automatically change the wind direction in the vertical direction depending on the season of the air conditioner installed in a high place that is difficult to reach, but it is common to change the wind direction in the horizontal direction manually.
In order to control the wind direction, it was necessary to manually adjust the angle of the left and right blades each time.

An object of the present invention is to provide an air blow direction device for an air conditioner that automatically changes the angle of left and right blades at regular intervals.

[Means for solving problems]

The above purpose consists of a connecting rod for changing the air guide angle of the left and right blades, a shape memory alloy spring that is constantly energized and drives the connecting rod when it reaches a certain temperature, and one end that can be rotated freely. a bias spring that applies restorative plastic deformation to the shape memory alloy spring via a pivoted lever; a pilot air duct that separates the shape memory alloy spring from the main air duct; and a pilot air duct that engages with the other end of the lever. 6 [Function] As shown in FIG. 1, the shape memory alloy spring 5 is plastically deformed by the bias spring 4, and the damper 6 moves the pilot air duct 2.
8, the shape memory alloy spring, which is always energized, gradually rises in temperature, and when it reaches a certain temperature, it overcomes the bias spring 4 and opens the damper 6, as shown in Figure 2, where the shape memory alloy spring The spring 5 receives the wind and radiates heat, and the temperature gradually decreases, and the damper 6 is again defeated by the bias spring, and the damper 6 shields the pilot air passage 28 from the air passage, and the above-mentioned operation is automatically repeated.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. Fig. 3 is a side sectional view of the entire air conditioner, Fig. 4 is a plan sectional view of the main part of Fig. 3, and Figs. 1 and 2 show an embodiment of the present invention. It is a detailed view of part A.

1 is the main air passage 29 inside the casing 2. pilot wind road 28
．． Bearing part 2a.

2b, 2c, having an engaging portion 3 and a heat exchanger 24,
Drain receiver 25. Blower26. Vertical blade 27. An air conditioner including left and right blades 14.

7 is supported by bearings 2b and 2c so as to be slidable back and forth.

A connecting rod 20 that rotates the left and right blades 14 around the fulcrum pin 15 via the connecting pins 16, 18, 19 and the connecting rod 17.
The guide bar 13 is rotatably supported by a fulcrum pin 23 and connected to the guide bar 7 via the connecting pin 10 and the elongated hole 12, and the connecting pin 9 of the damper 6 and the elongated hole are connected near the outer end. The lever 5 is connected to the guide bar 7 by a spring seat 8 fixed to the guide bar 7.
A shape memory alloy spring 4 drives the locking part 21 at one end.
The lever 13 is a bias spring whose other end is engaged with a locking hole 22 provided in the lever 13.

FIG. 1 shows that the bias spring 4 overcomes the shape memory alloy spring 5 and rotates the lever 13 around the fulcrum pin 23.
This shows a state in which the damper 6 is engaged with the engaging portion 3 of the casing 2 and the pilot air passage 28 is blocked.
The wind is directed in the direction of the arrow through the main wind path 29 by the left and right blades 14.

By the way, since the shape memory alloy spring 5 is constantly energized while the air conditioner 1 is in operation, its temperature gradually rises due to resistance heat. The spring 5 attempts to realize the memorized shape when the set transformation temperature is reached. Therefore, the spring 5 overcomes the bias spring 4, and the guide bar 7, which is fixed to the spring seat 8, is slidably supported by the bearings 2b and 2c of the casing 2, and connected to the connecting rod by the connecting pins 16 and 18. 17 to pull the connecting rod 20 to the right in the direction of the figure. At this time, the connecting pin 19 causes the left and right blades 14 to rotate around the fulcrum pin 15 toward the angle shown in FIG. On the other hand, the other end of the guide par 7 is connected to a connecting pin 10.

The lever 13 is rotated around the fulcrum pin 23 through the elongated hole 12 into which the connecting pin 1o is loosely fitted, and at this time the lever 13 is engaged with the locking hole 22 provided in the lever 13 and the locking portion 21 of the casing 2. The bias spring 4 is elastically deformed, and the lever 1
The damper 6 slides along the guide portion 2a of the casing 2 by the connecting pin 9 that is loosely fitted into the elongated hole 11 provided near the tip of the damper 3, unblocks the pilot air passage 28, and removes the air from the blower 26. Pass a part of it through the pilot airway. At this time, the direction of the wind passing through the main air passage 29 is changed to the left as shown by the arrow.

When this state is maintained for a certain period of time, the shape memory alloy spring 5 cools down and transforms from the austenite phase to the martensite phase, becoming soft and weak, and loses the bias spring 4 to reproduce the state shown in FIG. 1. The states of FIGS. 1 and 2 are repeated.

According to this embodiment, there is no need to use an electric motor as a drive source for the left and right blades 14, so the equipment is simple, and since the bias spring is opposed to the shape memory alloy spring, the wind direction can be changed quietly. There is.

〔Effect of the invention〕

According to the present invention, since a shape memory alloy spring and a bias spring opposing the spring are used to adjust the angle of the left and right blades of the air conditioner, the air blowing direction can be automatically changed at regular intervals. Can be done.

[Brief explanation of the drawing]

FIGS. 1 and 2 are explanatory diagrams of main parts of an air conditioner showing one embodiment of the present invention, and are detailed views of section A in FIG. 4. FIG. 3 is a side sectional view of the entire air conditioner, and FIG. 4 is a plan sectional view of the main part of FIG. 3. 1... Air conditioner, 4... Bias spring, 5...
・Shape memory alloy spring, 6... damper, 7... guide bar, 13... lever, 14... left and right blades,
17... Connecting rod, 20... Connecting rod, 27... Vertical blade, 28... Pyro first country.

Claims (1)

[Claims] 1. In an air conditioner comprising vertical blades and left/right blades for changing the direction of air blowing, a connecting rod for changing the air guide angle of the left/right blades, and a connecting rod that is constantly energized to reach a constant temperature. Then, there is a shape memory alloy spring that drives this connecting rod, a bias spring that restores plastic deformation to the shape memory alloy spring via a lever whose one end is rotatably supported, and the shape memory alloy spring. 1. A blow deflection device for an air conditioner, comprising a pilot airway that separates a manufactured spring from a main airway, and a damper that engages with the other end of the lever to open and close the pilot airway.