JPH0371619B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wind direction changing device for an air conditioner.

Conventional configurations and their problems Conventionally, air conditioners have either had a structure in which the wind from a blower collides with each other to forcibly change the direction of the air to the opposite direction, or a fluid element principle has been applied to prevent air flow separation. There are known structures in which the blowing direction is changed by the attraction effect generated at that time, and a structure in which the blowing direction is changed by controlling a wind direction changing blade with a motor or the like.

On the other hand, there is a known device that increases the sensory effect by controlling the wind direction changing blades using a motor or the like to move them up and down during cooling.

However, this device requires a device to detect the blowout temperature and a mechanism to switch the direction of the blowout air, which increases the number of assembly steps due to the increase in the number of parts.
There are problems such as an increase in cost, and there is also a problem that it is not possible to achieve much in the vertical direction in order to enhance the sensory effect during cooling operation and to equalize the temperature distribution in the room, so some improvement measures are required. was.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and is a wind direction changing device having a simple structure, which changes the direction of air blowing in all directions during cooling operation.

Structure of the Invention To achieve this object, the present invention utilizes the deformability of a shape memory alloy such as a nickel-titanium alloy as a drive device for driving a resistance plate, and applies a counter bias load to a transmission means for transmitting the deformation property. A configuration in which a combination of two-way motion is given to the rack, and the linear operation of the rack is converted into rotational motion by a pinion gear meshing with the rack, and the resistance plate is rotated by the rotation of a transmission shaft fixed to the same rotational shaft as the pinion gear. During cooling operation, due to the deformation properties of the shape memory alloy (hereinafter simply referred to as SMA) due to the temperature difference between the indoor heat exchanger and the blown air and the opposing bias load, the resistance plate is rotated once in one reciprocating motion. It is something.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes an air conditioner main body, which is attached to a wall 2 as shown in the figure, and the wall 2 is provided with holes 3 and 4 through which tacts pass for heat exchange on the indoor side.

FIG. 2 is a cross-sectional view of the air conditioner main body shown in FIG. 1, and in the figure, 5 is an indoor air circuit formed on the indoor side of the air conditioner main body 1.
An indoor suction duct 6 and an indoor outlet duct 7 are attached to the air conditioner main body 1, which communicate with the indoor air circuit 5. Further, inside the indoor air circuit 5, an indoor heat exchanger 8, an indoor blower 9, and an indoor fan motor 10, which constitute a well-known refrigeration cycle, are arranged. Reference numeral 11 denotes an outdoor air circuit formed on the outdoor side of the air conditioner main body 1, and inside it, like the indoor air circuit 5, there are an outdoor heat exchanger 12, an outdoor blower 13, an outdoor suction port 14, and an outdoor air intake. An outlet 15, an outdoor fan motor 16, and a compressor 17 constituting a refrigeration cycle are provided.

In the figure, 18 is a duct grille attached to the wall 2.

Next, the structure of the duct grill will be explained with reference to FIGS. 3 and 4.

The duct grille 18 communicates with the indoor air blowing duct 7 to form a ventilation circuit. 28 is a thin plate-shaped SMM, which is fixed by a fin fixing part 36. The deformability of the SMA 28 is transmitted to the rack 33 by means of a transmission thread 35. 27 is a fixing part for fixing one end of the transmission thread 35 to the rack 33; 34 is a sliding part for sliding the rack 33; 31 is a counter bias spring; 32 is a bias spring rack fixing part; 30 is a bias spring grill fixing part; is a rotating shaft; 25 is a pinion gear that meshes with the rack 33 and is fixed to the rotating shaft;
19 is a resistance plate, and 29 is a transmission shaft. Further, 26 is a wind circuit section, which is formed by a blowing section 23, a circular noise 21, and a guide wall 20. Reference numerals 22 and 37 are support parts that rotatably support the rotating shaft 24.

FIGS. 5 to 8 show the flow of air when the air conditioning operation is performed in the cooling operation in the above configuration.

In the state shown in Figure 5, SMA28 has a low elastic modulus, yield stress, and other strengths because the fin surface temperature (T ₂ ) of the indoor heat exchanger 8 (usually about 10°C) is below the temperature at which shape intersection occurs. Eventually, the counter bias spring 31 causes deformation due to stress-induced martensitic transformation (Ms point to Mf point), and the
As the SMA 28 bends as shown in FIGS. 6, 7, and 8, the rack 33 is distorted by the dimension δ.
is pulled by the counter bias spring 31 and moves forward. As the rack 33, which has a ridge diagonally with respect to the front-rear direction, moves, the pinion on gear 25, which has a ridge diagonally with respect to the rotating shaft so as to mesh with the rack 33, rotates to the right.
4 rotates, and the resistance plate 19 also rotates.

Next, in the state shown in Fig. 8, the SMA 28 is warmed by the air temperature (T ₁ ) after passing through the fins (normally, when the room temperature is 27°C, the temperature after passing through the fins of the indoor heat exchanger 8 is about 10°C). The air temperature (T ₁ ) is approximately
The temperature will be 16℃. ), a large restoring force is generated in the SMA 28 that tries to return to its original state at the temperature at which it changes shape (transformation temperature T ₁ ), and the rack 33 moves backward and returns to its original state with no distortion. The accompanying pinion gear 25 rotates to the left, and the resistance plate also rotates. The air sent from the indoor blow-off duct 7 to the duct grille 18 is directed toward the nozzle 21 from the center of the duct grille 18 and the inner wall surface side of the duct grille 18 . However, from the point where the resistance plate 19 blocks the blow-off section 23, the wind becomes difficult to advance to the nozzle 21, and the pressure of the blow-out air is lower in the part of the nozzle 21 where the resistance plate 19 is located than in other parts.
Therefore, in the nozzle 21, the flow direction of the blowing air changes to a part of the resistance plate 19 where the pressure of the blowing air is low, and when the resistance plate 19 rotates as described above, the flow direction of the blowing air changes to the peripheral direction of the nozzle 21. Fixed period is changed.

As a result, the airflow direction is changed in the surrounding direction at regular intervals during cooling, and the so-called fluctuating effect, which makes the human body feel cooler than continuous cold air, is more likely to be achieved than with conventional two-way airflow direction changes.

In this embodiment, an integrated type air conditioner has been described, but a separate type air conditioner may be used, and a system type duct outlet may also be used.

Effects of the Invention As is clear from the above embodiments, the wind direction changing device for an air conditioner according to the present invention has a deformation property of a shape memory alloy whose one end is fixed to an indoor heat exchanger as a drive device for a resistance plate for changing the wind direction. The air blowing direction during cooling operation is changed to the peripheral direction at regular intervals using a transmission means and a counter bias spring.
The airflow direction can be changed without the need for temperature detection means or a mechanism to change the airflow direction, reducing the number of parts.
The wind direction changing device can be made small and inexpensively.

[Brief explanation of drawings]

Figure 1 is a perspective view of an outdoor integrated wall-mounted air conditioner.
2 is a sectional view taken along the line C-C in FIG. Figure 4b is a sectional view taken along line B-B in Figure 3, and Figure 5~
FIG. 8 is a sectional view showing the flow deflection, resistance plate, and movement of the drive device during cooling operation, and FIG. 9 is a hysteresis loop diagram of the shape memory alloy. 19... Resistance plate, 24... Rotating shaft, 25... Pinion gear, 27... Fixing part, 28... Shape memory alloy, 29... Transmission shaft, 30... Bias spring grill fixing part, 31... Opposing Bias spring, 32...
...Bias spring rack fixing part, 33...Rack,
35...Transmission thread.

Claims (1)

[Claims] 1. A duct grill communicating with the duct and the indoor wind circuit is provided at the outlet configured to blow out the heat-exchanged indoor air through the duct, and the duct grill is formed from a drive part that changes the wind direction and a wind circuit part, The driving section is formed by a shape memory alloy having one end fixed to the indoor heat exchanger and a transmission means attached to the other end, a rack connected to the shape memory alloy via the transmission means, and a rack having one end fixed to the shape memory alloy. a counter bias spring whose other end is fixed to the bias spring rack fixing part of the rack and the bias spring grill fixing part; a pinion gear which engages with the rack and is fixed to the rotating shaft; and a resistance plate; A wind direction changing device for an air conditioner, in which a resistance plate is fixed so as to be interlocked with the rotating shaft through a transmission shaft, and a wind circuit section is formed of a blowing section, a circular nozzle, and a guide wall.