JPS60144553A - Device for changing air flow direction of air conditioner - Google Patents

Abstract

PURPOSE:To improve the blasting performance of the titled device with a simple construction by bringing a coil spring made of a shape memory alloy into engagement with one end of an air flow direction changing vane axially supported at the center by a shaft and also bringing an opposing bias spring into engagement with another end of the vane. CONSTITUTION:The coil spring 13 made of the shape memory alloy is engaged with one end of the air flow direction changing vane 15 axially supported at its center by the shaft 16, and the opposing bias spring 17 is engaged with another end of the vane 15. As a result, since in the cooling mode operation, the blow-off temperature is low, the air flow direction vane 15 becomes horizontal because of the deformation property of the coil spring 13 made of the shape memory alloy and the load of the opposing bias load. Furthermore, since the air flow direction changing vane 15 faces downwardly for the above described similar reason at the time of heating mode operation, it is mode possible to improve the blasting performance with a simple construction but without using temperature decting means and a mechanism for changing the blasting direction.

Description

[Detailed description of the invention] Industrial applications The present invention also relates to a wind direction changing device for an air conditioner. It is.

Conventional configurations and their problems Traditionally, air conditioner wind direction changing devices have either a structure that forces the wind from a blower to collide with each other to forcefully change the opposite wind direction, or a structure that applies a fluid element principle to create a separation phenomenon in the airflow. There are known structures in which the direction of the headwind is changed by the attraction effect generated at that time, and a structure in which the direction of the blowing air is changed by controlling the wind direction changing blades with a motor or the like.

On the other hand, in order to further improve the comfort of air conditioning, devices are known that increase the sensory effect by changing the direction of the air using wind direction changing blades, for example, blowing hot air downward during heating and upward when cooling air. It is being

Fig. 3 is a conventional example of an enlarged view of the ventilation circuit of an air conditioner equipped with air direction changing blades for downward blowing, in which 1 is the main body of the air conditioner indoor unit, 4 is the supply flow generation part, 7 is the supply port, and 8 is a guide wall, 6 is an indoor heat exchanger, 6 is a blower, 16
3 indicates the wind direction changing blade, 16 indicates the shaft, 17 indicates the upper guide wall, and 18 indicates the upper gap.

In the figure, during downward blowing during cooling operation, the flow deflection mechanism is the supply flow. In the flow above the wind direction changing blade 16, the upper flow d1 receives a pie spatula by the upper guide wall 17 and the wind direction changing blade 15 and blows out downward, and in the lower flow, it separates downward from the wind direction changing blade 16. The flow d2' near the wind direction changing blade is the wind direction changing blade 15.
The flow d2 along the supply port, which is deflected more downward, is d2'
, d, and is blown downward from the guide wall 17.

However, with this device, since the upper gap 18 is generated, the atmospheric flow flows into the upper gap, causing dew condensation on the upper guide wall, making the air blowing sound unpleasant, and reducing the air volume. had.

Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks, and aims to improve the performance of downward air blowing during heating operation with a simple structure, and to reduce the size of the air conditioner. .

Structure of the Invention To achieve this object, the present invention utilizes the deformation property of a shape memory metal such as a nickel-titanium alloy and a bias load 1 that opposes the deformation property of a shape memory metal such as a nickel-titanium alloy and a transmission thread that transmits the deformation property as a drive device for driving a wind direction changing blade. During cooling operation, the airflow direction change blade becomes horizontal due to the deformation properties of the shape memory metal (hereinafter simply referred to as SMA) and the counter bias load due to the low blowout temperature, and furthermore, the upper guidance is caused by the transmission. The walls are also linked and face downward for the same reason during heating operation.

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

First, the existing structure of a separate type air conditioner will be explained with reference to FIGS. 1 and 2.

In the figure, 1 is an indoor unit main body, and a suction port 2 and a blowout port 3 are formed on the front surface. Reference numeral 4 denotes a ventilation passage formed in the indoor unit main body 1, which communicates with the suction port 2 and the air outlet 3, and has well-known elements 5 inside.

A heat exchanger 5 and a blower 6 that constitute a refrigeration cycle are provided. 9 is a water tray of the heat exchanger 6, which also serves as an air guider. These are similar to existing air conditioners, and although not shown, the air filter, front grille, fan motor, etc. are included as well known.

Next, the configuration of the wind direction changing device will be explained with reference to FIGS. 3 and 4. 10 is a guide wall axis, and the upper guide wall 11 rotates around the guide wall axis 10. Reference numeral 15 denotes a wind direction changing blade formed in the shape of a wing, and both ends thereof are incorporated into opposing both side walls of the air outlet 3 via shafts 16 and 19 and supported so as to be rotatable. 12 is a transmission thread connecting the upper guide wall 11 and the wind direction changing blade 15; 13 is an SMA coiled spring; 14 is a fixing portion of the SMA coiled spring 13;
7 is a counter bias spring.

5MICl3 is currently practically used as Cu-Zn-Al4 and N.
The i-Ti alloy is used, and the Cu alloy, which is mainly a Cu-Zn-A1 alloy, has the property of bidirectional movement and has a small hysteresis value.
・7 The fatigue life deteriorates significantly. On the other hand, the Ni-Ti alloy is a unidirectional SMA that deforms only when heated, but due to the nature of the alloy, the fatigue life is extremely superior to that of the Cu alloy. For this reason, here, a Ni-Ti alloy, which exhibits only unidirectional behavior when used alone, was made to exhibit bidirectional behavior using a counter bias load.

Next, the deformation properties of the SME will be explained with reference to FIGS. 6 and 7.

As shown in FIG. 6, Ni-Ti alloy 13 is shaped into a tightly coiled shape memory treated at high temperature. Counter bias spring 17
．． Fixed parts 9, 14. At the wind direction changing blade 16° axis 16, below the temperature (transformation temperature T2) at which shape change occurs due to shape memory, the properties of 5MA13 include low strengths such as elastic modulus and yield stress, and stress-induced martensitic transformation (Ms point to Mf point). )
3 because the rotational torque exerted by the opposing bias spring on the wind direction changing spring exceeds the rotational torque exerted by 5MA13.
The MA 13 is deflected by δ, and the wind direction changing blade 16 is directed downward. When the SMA is heated, a large restoring torque is generated that tries to return to the original shape due to shape memory due to austenite transformation (from point M8 to point Af) at the transformation temperature T, and the SMA returns to the state of deflection O ( Due to the hysteresis phenomenon), the wind direction changing blade 16 is in the horizontal direction.

As described above, the two-way movement of 3M persons is performed.

Wind direction changing blade 1 using 5MA13 with two-way operation described above
4 and 6 show the operating state of the upper guide wall 11 which is interlocked with the wind direction changing blade 15 through the wind direction changing blade 15 and the transmission thread 12. The configuration is as described above, and arrows B and C in the figure indicate the direction of air blowing.

Next, Fig. 4 shows the upward and downward airflow.

This will be explained with reference to FIG.

Figure 4 shows the air flow during cooling, and the wind direction changing blade 1
6 is the horizontal direction as described above.

In the figure, feed stream B. Of these, the flow near the wind direction changing blade 16 that has separated above the wind direction changing blade 16 flows along the wind direction changing blade 16, and the flow bl near the father part guide wall 11 flows toward the upper guide wall 11. flowing along b
1' and bl merge to form a flow B above the wind direction changing blade 15, which flows in the horizontal direction. In addition, the flow Ab2' near the wind direction changing blade 16 that has separated downward is the flow of the wind direction changing blade 1
6, flows horizontally along the guide wall 8 from the supply lower, merges with the flow b2 along the guide wall 8, and becomes B2, flows almost horizontally, and the upper flow B1 and the lower flow B2 of the wind direction guide vane merge and become horizontal. This becomes air flow B.

FIG. 6 shows the air flow during heating. Due to the deformation property of 8MA13, the wind direction changing blade 15 is directed downward as described above, and the wind direction guiding blade 16 and the upper guide wall 11 are connected by the transmission thread 12 and interlock, so that the upper guide The wall 11 also faces downward.

In the figure, out of the supply flow co, a flow C, // separated above the guide vane 15 flows downward along the upper guide wall 11, and a flow Q, // separated below the guide vane 16, flows downward along the upper guide wall 11 in the downward direction.
It merges with the flow C2 along the guide M8 from the supply lower and becomes the downward blowing flow C.

As mentioned above, when the air is blown downward, the upper gap 18 shown in FIG. 3 does not exist, so the atmospheric flow flows into the upper gap 18, causing dew condensation on the upper guide wall 11, making the air blowing sound louder, and reducing the air volume. In addition, the air conditioner's ideal ``cold head, warm feet'' effect can be achieved both during cooling and heating, and there is no need for a temperature detection means or a complicated mechanism for changing the wind direction.
Reduced number of parts.

The number of assembly steps can be reduced by a total of 1,000 yen, and furthermore, the air conditioner can be made more compact since there is no need for a drive device such as a motor.

In this embodiment, a separate type air conditioner has been described, but it can be implemented in the same manner even if it is an integrated type.

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 one end fixed to the wind direction changing blade as a driving device for the wind direction changing blade used at the air outlet of the air conditioner, and the other end fixed to the wind direction changing blade. The deformation property of the shape memory alloy whose end is fixed to the air outlet and the transmission thread that connects the wind direction changing vane at one end and the upper guide wall at the other end are used to link the change in air direction for air conditioning and heating. ,.

As a result, the air blowing performance is the same as that of conventional air direction changing blades, and the air direction can be changed without the need for temperature detection means or a mechanism to change the air blow direction.The number of parts can be reduced, and the air direction can be changed in a small size. And it can be produced cheaply.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an air conditioner equipped with a wind direction changing device according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the air conditioner, and Fig. 3 is a bottom view of a conventional example of the air conditioner. FIGS. 4 and 6 are enlarged cross-sectional views of essential parts during upward and downward blowing in the same air conditioner; FIG. 6 is a shape memory diagram in an embodiment of the present invention. A Bidirectional Operating Thermal Sensing Device Combining Alloys and Counter-Bias Loading. FIG. 7 is a diagram showing a temperature-displacement hysteresis loop illustrating the operation of the bidirectional operating thermal sensing device. DESCRIPTION OF SYMBOLS 1...Indoor unit main body, 9...Water tray, 10...Guide wall shaft, 11...Upper guide wall, 12... Transmission thread, 13... Shape memory alloy coil spring, 14... 11 ・＼ 7... Fixed part, 16... Wind direction changing blade, 16.
...Axis, 17...Counter bias spring. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 @3v1 114 Figure S Figure 6 Figure 7 2■V

Claims (1)

[Claims] A shape memory alloy coil spring has one end fixed to the wind direction changing vane of an air conditioner from which heated and exchanged air is blown out, and a shape memory alloy coil spring whose other end is fixed to the fixed part of the air outlet. The wind direction changing vane is rotatably attached via a counter bias spring fixed to the water tray to provide a two-way operation structure, and the wind direction changing vane and the upper guide wall, which can be freely rotated around the inner wall axis, are connected to the transmission system. The structure is such that the operation of the wind direction changing blade is transmitted to and interlocked with the upper guide wall, and due to the deformation property of the shape memory alloy due to the discharge temperature difference during cooling/heating operation, the wind direction changing blade and the upper guide wall are moved during cooling/heating operation. is a device for changing the wind direction of an air conditioner that moves horizontally and downwards during heating.