JPS6011052A - Airflow direction changing device for air-conditioning machine - Google Patents

Abstract

PURPOSE:To stabilize ventilation for a pivot control member by a method wherein the pivot control member of a shape memory alloy, moving an airflow direction changing vane by the elongation and contraction thereof due to the temperature change of the airflow blown off from the machine, is provided with a protection cover. CONSTITUTION:The protection cover 11 is formed so that both side plates 11a, 11b thereof cover the pivot control member 9 to reduce the affection to the pivot control member 9 when the airflow direction is changed by left and right changing vanes 10. The rear surface 11c of the protection cover 11 is opened so as to obtain the stable amount of airflow from a ventilating airflow path 4. The front surface 11d of the cover 11 is provided with venting ports 11e so that the airflow, obtained from the opened rear surface 11c, is not disturbed after it passed the pivot control member 9. A part of the airflow, passed through the ventilating air path 4, passes through the rear surface 11c and is blown off from the venting ports 11e through the pivot control member 9. In this time, the pivot control member 9 is elongated or contracted by the temperature of the airflow to move the upper and lower airflow direction changing vanes 8 up-and- down a notch 11g and change the direction of the airflow.

Description

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

Configuration of conventional example and its problems Conventionally, as a wind direction changing device for an air conditioner, the wind direction changing blade is driven by a shape memory alloy formed in a coil shape.
．． A structure has been devised that changes the air blowing direction up and down. Its configuration will be explained with reference to FIGS. 1 and 2.

In the figure, conventionally, an air outlet 22 of an air conditioner 21
A coil 23 made of a shape memory alloy was fixed to both ends of the wind direction changing blade 24 and the air outlet 22 and exposed to the outside.

Therefore, the coil 23 could easily be pulled from the outside, resulting in accidental damage.

In addition, the air flowing from the air passage 25 to the air outlet 22 is controlled by changing the left and right changing blades 26 in one direction.
Since the amount of air flowing to the coil 3 changes greatly, the temperature sensing level of the coil 9 is not stable, and the operation of the wind direction changing blade 24 becomes unstable.

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned conventional drawbacks, and aims to provide protection against external forces and stabilize the air blowing operation of an air conditioner.

Structure of the Invention In order to achieve this object, the present invention provides a protective cup for protecting a rotation control member made of a shape memory alloy, and further provides a large number of ventilation holes in this protective cup. be.

With this configuration, the rotation control member is prevented from being affected by external influences, and stable air volume and temperature are provided to the rotation control member without being affected by changes in left and right airflow.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 to 5.

First, the schematic structure of the air conditioner will be explained with reference to FIGS. 3 and 4.

In the figure, reference numeral 1 denotes an indoor unit main body of a separate type air conditioner, and an inlet 2 and an outlet 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 inside thereof is a heat exchanger 6 and a blower 6 that constitute a well-known refrigeration cycle.
is installed. Reference numeral 7 denotes a water tray for the heat exchanger 6, which also serves as an air guide for the blower 6. These are similar to existing air conditioners, and are equipped with an air filter, a front grill, a fan motor, etc., which are not shown, but are well known. Reference numeral 8 denotes a vertical wind direction changing blade, which is formed in the shape of a wing, and both ends of which are rotatably attached to opposite side walls of the air outlet 3 via a shaft or the like. 9 is a rotation control member formed into a spring shape and made of a well-known shape memory alloy. Both ends of the rotation control member 9 are fixed to the wind direction changing blade 8 and the air outlet 3.

Reference numeral 10 denotes a left/right wind direction changing blade, whose lower end is attached to the outlet 3 and changes the wind direction left/right in conjunction with each other. 11 is a protective cover that covers the rotation control member 9.

Next, the structure of the protective cover 11 will be explained with reference to FIG.

In the figure, the protective cover 11 has both sides (11a, 1
1b) is formed in a flat plate shape to cover the rotation control member 9, so that even if the wind direction is changed by one by the left/right changing blade 10, the influence on the rotation control member 9 is reduced. Also, the rear surface 11
C is open so as to obtain a stable amount of air from the ventilation passage 4. A ventilation hole 1115 is provided on the front surface 11d so that the air obtained from the open rear surface 110 is not disturbed even if it passes through the rotation control member 9. 11f is a cylindrical hole for fixing the protective cover 11 through the shaft of the vertical wind direction changing blade 8. Reference numeral 11g designates a notch that prevents the protective cover 11 from being interfered with even if the vertical wind direction changing blade 8 moves up and down.

In the above configuration, a part of the air passing through the ventilation passage 4 passes through the rear surface 110, passes through the rotation control member 9, and is blown out from the ventilation opening 11θ, as shown in FIG. At this time, the rotation control member 9 expands and contracts depending on the temperature of the wind, and the vertical wind direction changing blade 8 is cut into the notch 11.
Move up and down on g to change the direction of the wind.

Effects of the Invention As is clear from the above embodiments, the present invention provides a rotation control member made of a shape memory alloy that expands and contracts depending on the temperature of the blown wind to operate the wind direction changing blades. The movement control member can be protected from external forces, and since the protective cover has a ventilation hole, the ventilation to the rotation control member is stabilized, and the expansion and contraction movement of the rotation control member is stable. This has the effect of allowing the wind direction to be changed.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an air conditioner showing a conventional example, FIG. 2 is a vertical sectional view taken along line H-■ in FIG. 1, and FIG. 3 is a perspective view of an air conditioner according to an embodiment of the present invention. Figure 4 is I of Figure 3.
FIG. 5 is an enlarged sectional view of the main part taken along the line V-IV, and a perspective view of the protective cover in the air conditioner. 1... Indoor unit main body, 3... Air outlet, 5... Heat exchanger, 7... Water tray,
8... Vertical wind direction changing blade, 9... Rotation control member, 11... Protective cover, 11e...
...Ventilation.

Claims (1)

[Claims] Air direction changing blades are rotatably attached to opposite side walls of the air conditioner outlet through which heat-exchanged air is blown out.
Further, an extendable coil-shaped rotation control member for rotating the wind direction changing blade is provided, and the rotation control member is made of a shape memory alloy material, and a large number of coil-shaped rotation control members are provided on the leeward side of the rotation control member. A wind direction changing device for an air conditioner equipped with a protective cover having a ventilation hole.