JPS60188744A - Airflow direction changing device for air conditioner - Google Patents

Abstract

PURPOSE:To permit to change the direction of airflow in accordance with heating operation or cooling operation by a method wherein a resistance plate for changing the direction of airflow is permitted to be moved into two directions in accordance with the change of the temperature of blown-off air by utilizing deforming property of a shape memory alloy and a bias spring opposing to the shape memory alloy as the driving device of the resistance plate. CONSTITUTION:When room heating operation is effected, a restoring force which tries to return to the initial configuration, is generated in the SMA (shape memory alloy) coil spring and it returns to a condition that the strain thereof is zero, therefore, a slide shaft is pulled forward and the resistance plate 19 comes to the position of lower blow-off port. In this case, the airflow d4, flowing along a lower air supplying path, is intercepted by the resistance plate 19 at the lower blow-off port, therefore, the pressure of the lower airflow becomes lower than the same of the upper airflow whereby the ventilating airflow D0 becomes downward blow-off along a lower guiding wall. On the other hand, when room cooling operation is effected, a deformation due to stress inducing martensite transformation is caused by the bias spring 28 and the SMA coil spring is distorted, therefore, the resistance plate 19 is pulled backward and the ventilating airflow E0 becomes the blow-off of horizontal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a wind direction changing device using a duct grill for blowing air from an indoor Suita duct in an air conditioner that cools or heats a room through a duct.

Conventional structure and its problems Conventionally, this type of air conditioner has a structure in which heat-exchanged air is directly blown through a duct, a structure in which the air from the blower collides to forcefully change the sending direction, and a wind direction changing blade. A structure is known in which the airflow direction is controlled by using a morph, etc.

On the other hand, in order to improve the comfort of air conditioning, there is a device that changes the direction of the air so that, for example, hot air for heating is blown downward, and cold air for cooling is blown to one side.

However, this device requires a device to detect the blowout temperature and a mechanism to change the direction of the blowout air (IJ), and there are problems such as an increase in assembly man-hours and costs due to an increase in the number of parts. Improvement measures were required.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to make it possible to change the wind direction during heating and cooling using a duct grill with a simple structure.

Configuration of Starting Point 1 To achieve this objective, the present invention uses a resistor plate driven by jfQ
The drive device for this purpose is designed to operate in two directions by combining the deformation properties of shape memory alloys such as nickel-chip alloys with counter bias loads, and the shape memory alloys (hereinafter simply referred to as The resistance plate is moved by the deformation properties of the SMA (referred to as SMA) and a symmetrical bias load, and the flow of blown air accompanying the movement of the resistance plate is used to change the wind direction during heating and cooling.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 10i.

First, the configuration of the air conditioner main body will be explained with reference to FIGS. 1 and 2.

In Fig. 1, reference numeral 1 denotes an air conditioner main body, which is housed in a wall as shown in the figure, and a wall 2 is provided with a duct 60 and 4 through which a duct passes for heat exchange inside the room.

FIG. 2 is a cross-sectional view of the air conditioner main body shown in FIG.
0 An indoor air circuit formed on the indoor side, an indoor air suction duct 6 and an indoor air outlet duct 7 communicating with the indoor air circuit, an indoor heat exchanger 8 constituting a well-known refrigeration cycle inside the indoor air circuit 5, An indoor blower 9 and an indoor fan motor 10 are provided.

Reference numeral 11 denotes an outdoor wind circuit formed outside the air conditioner main body 1, inside which the indoor wind circuit 5 is formed.
Similarly, an outdoor heat exchanger 12, an outdoor blower 13, an outdoor suction port 14, an outdoor air outlet 15, and an outdoor fan morph 16 are provided. Further, a compressor 17 that constitutes a refrigeration cycle is disposed within the air conditioner main body 1.

In the figure, 18 is a duct grill that fits into wall 2.
J is being kicked.

Next, the structure of the duct grill will be explained with reference to FIGS. 3 to 5.

18 is a duct grill body, which is connected to the indoor Suita duct 7;
communicates with the air supply circuit to form a ventilation circuit. The duct grille consists of a resistance plate 19 for changing the wind direction, a shaft part 2°, and a wind circuit part 21, and the 1]0 1ql+ part 20 has an inner surface of the shaft part 2o, which is a hollow shaft, as shown in FIG. There is a slide shaft 22 that slides, and on the slide shaft 22 there is a counter bias spring 25 whose one end is fixed to the slide shaft coil fixing part 23 and the other end is fixed to the grill coil spring fixing part 24. SM with one end fixed to the slide shaft SMA fixing part 26 and the other end fixed to the grill SMA fixing part 27
A coil spring 28 is provided to form a driving section.

-Also, the resistance plate 19 is fixed so as to be interlocked with the slide shaft 22 by a transmission shaft 29.

The wind circuit section 21 includes a -1 partial supply path 30 and a lower supply path 31.
．． 1 part blowout part 32, lower blowout part 33, upper guide wall 34,
- The F section is composed of a guide wall 35.

FIG. 6 and FIG. 7 show the flow of air when heating and cooling operations are performed in the air conditioning operation in the above configuration.

When heating operation is performed, the SM
A large restoring force is generated that attempts to return the shape change of the A coil spring 25 to its original shape at temperature (transformation temperature T1), resulting in distortion O.
In order to restore the state to 1) fI slide shaft 22 is
? The resistance plate 19 is pulled in the fJ direction, and therefore the resistance plate 19 also comes to the position of the lower blow-off portion 33 as shown in FIG. At that time, the shaft part 2
The air flow at the upper part of o has two flows: a flow dl along the upper supply path 30 and a flow d2 along the shaft section 2o, and the air flow at the lower part of the shaft section 2o has two flows: a flow d4 along the lower supply path 31 and a flow d2 along the shaft section 2o. However, the flow d4 along the +Jfj lower supply path is blocked by the resistance plate 19 at the lower outlet 33, so the pressure of the lower flow becomes lower than that of the upper flow. , the air flow is deflected downward in the second part of the Suita section. The air is blown downward along the lower guide wall.

Also, during cold bed operation, as shown in Figure @8, jiff mark SM
Humidity indicating the shape change of the A coil spring 25 (transformation t111
Below T2), the properties of SMA include low strengths such as elastic modulus and yield stress. Therefore, stress-induced martensitic transformation (M s
A deformation occurs at the point ~ M f , (< )K, and the SM
Since the A coil spring 25 is distorted by a certain amount, it becomes 1 as shown in Fig. 7.
The support plate 19 is pulled rearward.

At that time, the air flow in one part of the shaft portion 20 is) ii + heating operation 11 described above! i, and the flow below the shaft 20 is also the same as the flow in the 1 part, so the pressures of the 1 part flow and the flow in the lower part are equal, so the blast flow Eo is horizontal. It becomes a speech bubble on the other side.

Therefore, with the duct grille of this invention, the ideal ``cold head, warm feet'' effect of an air conditioner can be achieved in the duct outlet during cooling operation and heating operation.

Effects of the Invention -1 - As is clear from the embodiment described above, the air conditioner wind direction changing device in Kibori-1 uses the deformation properties of a shape memory alloy as a drive device for a resistance plate for changing the wind direction. The counter bias spring enables two-way operation based on temperature changes, and changes the air direction in heating and cooling operations. The air blowing resistance is also smaller compared to the control blade-based expansion control device.

[Brief explanation of drawings]

Figure 1 is a perspective view of an outdoor integrated wall-mounted air conditioner, Figure 2 is a cross-sectional view taken along the line C-C in Figure 1, and Figure 3 is a diagram of the shape of the product in January (a duct grill with alloy coil springs and other parts). FIG. 4(a) is a cross-sectional view taken along line AA in FIG. 3, FIG. 4 (tb) is a cross-sectional view taken along line B-B in FIG. 3, and FIG. 6 is a cross-sectional view showing flow deflection during heating operation, Figure @7 is a cross-sectional view showing flow deflection during cooling operation, and Figure @8 is a hysteresis loop of the shape memory alloy. 18... Duct grill body, 19...
Resistance plate, 20... Shaft part, ,, 21...
... Wind circuit section, 22 ... Slide shaft, 23 ...
...Slide shaft coil fixing part, 24...Grill coil spring fixing part, 25...Counter bias spring, 26...Slide shaft shape memory alloy fixing part, 27. ...G IJ) shape memory alloy fixing part,
28... Shape memory alloy coil reno kune, 30.
・・・・・ Upper supply path, 31 ・・Lower supply path, 32 ・・・ 1 partial blowing part, 33 ・・・・ Lower blowing part, 34 ・・...1 part guide wall, 35...
...lower guide wall. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 2 Gap, Figure 4 ((1,) (b) Figure 5

Claims (1)

[Claims] Suita has a structure in which the heat-exchanged indoor air is blown out through the duct.A duct grill is installed in the Suita [-] which communicates with the duct and the indoor air circuit. The shaft part 110 has a slide shaft that slides on the inner surface of the shaft part which is a hollow shaft, and one end of this slide shaft is a slide shaft coil fixing part and the other end is a grill coil spring fixing part. A drive unit is formed by providing a counter bias spring fixed to each of the two sides, and a shape memory alloy coil spring having one end fixed to the slide shaft shape memory alloy fixing part and the other end fixed to the grille shape memory alloy fixing part on the rear surface. , the resistance plate is connected to the slide shaft by a transmission shaft, and the wind circuit section is composed of an upper 73Iζ supply channel, a lower supply channel, an upper Suita section, a lower Suita section, an upper guide wall, and a lower guide wall. Air conditioner wind direction change device.