JPH01114660A - Air-conditioning device - Google Patents

Abstract

PURPOSE:To realize a structure, capable of blockading an opening substantially upon stopping ventilation, in a minimum space with a low cost, by blockading a blow-off port by a first guide plate, determining blow-off direction, and a pivotable second guide plate. CONSTITUTION:An opening is substantially blockaded upon stopping ventilation by a first guide plate 8 and a second guide plate 12. When heating operation is started, the first guide plate 8 is pivoted clockwise about a pivotal axis 10. In this case, a heater is conducted and a coil spring 15, made of a shape- memory alloy, is heated by a hot plate 18. One end of the coil spring 15 is attached to a main body through a pin 16 and the other end of the same is attached to the second guide plate 12 through the pin 14, therefore, the second guide plate 12 is pivoted counterclockwise about the pivotal shaft 13 when the coil spring 15 is contracted. ln this case, the second guide plate 12 is stopped when it is abutted against the ventilation guide 6'. When the ventilation is stopped, the first guide plate 8 is pivoted counterclockwise and the conduction of the heater 17 is cut whereby the coil spring 15 is cooled gradually and is elongated to the initial length thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air conditioner having a heat exchanger, a blower, etc. in the main body, and particularly relates to an improvement in the outlet structure of a wall-mounted air conditioner.

BACKGROUND OF THE INVENTION In recent years, wall-mounted air conditioners have become thinner and more comfortable. An example of a conventional device will be described below with reference to the drawings.

FIG. 4 shows the blowing direction of the wall-mounted air conditioner. 1 is the main body of the air conditioner, which aims to equalize the temperature distribution in the room by blowing air in the direction of the arrow when heating and in the direction of arrow B when cooling.

An example of a specific configuration for realizing this will be explained using FIGS. 5 to 8. 2 is a heat exchanger, 3 is a blower, 4 is an inlet, and 6 is an outlet. 6゜7 is the ventilation guide, 8
is a rectifying plate, and as clearly shown in FIG. 7, the rectifying plate 9 and the guide plate are integrated. Reference numeral 10 indicates a rotating shaft thereof, and reference numeral 11 indicates a rotating means such as a motor. The operation will be explained below. As shown most clearly in FIG. 8, the guide plate 8 is in the position 6) when the air blowing is stopped. During heating and air blowing, the guide plate 8 is rotated clockwise about the rotation shaft 10 by the motor 11, and is brought to the position shown in FIG. 8(b). When blowing cooling air, the air blowing direction is determined as shown in FIG. 4 by further rotating clockwise to position (C).

Further, when the guide plate 8 is in the states (b) and (C) in FIG. 8, the motor 11 is given alternate rotation at a certain angle, the guide plate 8 is oscillated and rotated, and the air blowing is fluctuated. It creates a feeling similar to that of natural wind and provides greater comfort.

Problems to be Solved by the Invention However, in recent years, design demands have become stronger from the perspective of interior aesthetics in addition to comfort.
There is a need to improve the situation in which the air outlet remains open when the air blowing is stopped, as shown in the figure.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides an air outlet structure that can substantially close the opening when air blowing is stopped, in a minimum space, and at a low cost.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a first guide plate that determines the blowing direction, a rotatable second guide plate, and a second rotatable guide plate.
A coil spring made of a shape memory alloy that engages with the guide plate, means for heating the fill spring, and an auxiliary spring that biases against the fill spring, and when air blowing is stopped, the first and second guide plates close the air outlet. It is designed so that it is almost occluded.

Function According to the above configuration of the present invention, when performing heating or cooling air, the coil spring made of a shape memory alloy is heated and contracted by the heating means, the second guide plate is rotated, and the first guide plate is rotated.
Rotate the guide plate to the position that corresponds to the purpose of heating and cooling.
Open the air outlet to blow air. In addition, when the air blowing is stopped, if the heating by the heating means is stopped, the coil spring made of a shape memory alloy is cooled and expanded, and at the same time, the auxiliary spring biased in the direction in which the coil spring extends acts, causing the second
When the guide plate is in the position where the outlet is closed, the guide plate substantially closes the outlet together with the first guide plate.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. Note that the combined configuration of the air conditioner is the same as that shown in FIGS. 6 and 7, and a description thereof will be omitted. FIGS. 1(A) to 1(e) are explanatory views of the operation of one embodiment of the present invention, and FIG. 2 is a perspective view of the same essential parts.

d and r are air blowing guides, and 8°9 is an integrally constructed first
10 is a rotation axis of the first guide plate. Reference numeral 2 denotes a second guide plate, 13 a rotation shaft thereof, and 14 a pin fixed to the second guide plate 12, with which one end of a coil spring 16 made of a shape alloy is engaged. 17 is a heater, 1
8 is a hot plate fixed to the heater 17, 19 is an auxiliary spring made of a torsion spring, and 2o is a pin fixed to the second guide plate 12.

Next, the operation will be explained based on FIGS. 1(a) to 1(c).

FIG. 1(a) shows a state where the air blowing is stopped. At this time, the opening is substantially closed by the first guide plate 8 and the second guide plate 12. FIG. 1(b) shows the heating and air blowing state, but when heating operation is started, the first guide plate 8 rotates clockwise around the rotation axis 1o from the state of FIG. 1(a). . This rotation angle can be set in advance by using a pulse motor as the motor 11. At this time, prior to the rotation of the first guide plate, the heater 17 is energized and the hot plate 18 causes the coil spring 15 made of a shape memory alloy to
heat up. Coil springs are shaped to contract when heated. One end of the coil spring 16 is attached to the main body 1 with pin 1.
6 and the other end is attached to the second guide plate 12 by the pin 14, so when the coil spring 15 contracts, the second guide plate 12 moves counterclockwise around the rotation axis 13. The state shown in Fig. 1 (a) to (b) is reached by the rotation. At this time, the second guide plate 12 is the ventilation guide d.
Stop when you hit it.

In this embodiment, as a heating means, a PTC heater is used as the heater 17, as shown in FIG. can. In addition, in order to heat the coil spring 16 efficiently and in consideration of assembly, an aluminum plate formed into a U-shape is fixed to the PTC heater 17, and the coil spring is placed inside the U-shape. It can be heated. Note that both the contraction start temperature of the shape memory alloy and the holding temperature of the PTC heater are about 90°C.

The torsion spring 19 acts in the direction in which the coil spring extends, engages with a pin fixed to the second guide plate 12, and moves the twelfth guide plate 2 clockwise with respect to the rotation center 13. It is energizing.

Therefore, when the coil spring 16 is heated and contracts, it is biased in opposite directions.

FIG. 1ti shows the condition of cooling air being blown. As described above, the first guide plate 8 rotates by a predetermined angle, but the second guide plate 12 rotates prior to the rotation.

When stopping air blowing, the first guide plate 8 is rotated counterclockwise to bring it into the state shown in FIG. 1(A).

At the same time, when the heater 17 is turned off, the coil spring 15 is gradually cooled down and stretched to return to its original length. Coupled with the action of the auxiliary spring, the second guide plate 12 is in the state shown in FIG. 1(A). At this time, the position of the second guide plate is determined by hitting a stopper (not shown).

In this embodiment, the second guide plate 12 is connected to the blower guide 6'.
However, as in the second embodiment shown in FIG. , P
Although a TC heater and a U-shaped heating plate were used, heaters other than PTC are also possible, and the shape of the heating plate is not limited to the U-shape, but various shapes such as circular and semicircular are possible. .

Furthermore, although screw springs are used as the auxiliary springs for the second guide plate, other springs such as plate springs and wire springs are also possible.

Furthermore, when starting heating or cooling, the guide plate starts rotating after the air blowing temperature reaches a predetermined temperature, and it is also possible to prevent cold air from being blown during heating and warm air during cooling. .

Effects of the Invention As described above, the present invention provides a second guide plate in addition to the first guide plate that determines the blow direction at the blow outlet, and the second guide plate is installed before the first guide plate rotates. As a means for rotating the plate, we used a coil spring made of a shape memory alloy and an indirect heater, so when the air blowing is stopped, the first The second guide plate substantially closes the air outlet, thereby improving the design quality of the wall-mounted air conditioner. Further, by substantially closing the outlet when air blowing is stopped, there is also the effect of preventing debris from entering the main body. In addition, recent air conditioners have enhanced functions. On the other hand, since the external dimensions are thin and compact, if a second guide plate is provided as in the present invention and a drive mechanism for the second guide plate is installed, for example, a motor and its control circuit, there is a large amount of space required for incorporating the motor and its control circuit into the main body. However, the present invention provides a structure that can be realized in a small space because the drive mechanism for the second guide plate is only provided with a coil spring made of a shape memory alloy and a heating means. It is something.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the operation of the first embodiment of the present invention, FIG. 2 is a perspective view of the same main part, and FIG. 3 is a configuration diagram of the main part of another embodiment.
Fig. 4 is an explanatory diagram of the blowing direction of the air conditioner, Fig. 6 is a sectional view of the conventional example, Fig. 6 is a front view of the same, Fig. 7 is a perspective view showing the guide plate, and Fig. 8 is the same guide. It is an explanatory diagram of the operation of the board. 1...Air conditioner body, 2...Heat exchanger, 3...Blower, 5...Air outlet,
8...First guide plate, 12...Second guide plate, 16...Coil spring, 17...
・Heater, 19...Auxiliary spring. Name of agent Patent attorney Toshio Nakao and one other person 1q Figure 3 Figure 7 11 Figure 8

Claims (1)

[Claims] In an air conditioner having a heat exchanger, a blower, etc. in the main body, the air conditioner includes a rotatable first guide plate that determines the blowing direction at the blower outlet, a rotatable second guide plate, and a second rotatable guide plate. A coil spring made of a shape memory alloy that is engaged with the coil spring, a means for heating the coil spring, and an auxiliary spring that biases against the coil spring are provided. An air conditioner characterized by being closed.