JPH0617759B2 - Air conditioner - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an air conditioner, and more particularly to a device for changing the direction of air flow at the outlet of the air conditioner.

[Prior art]

FIG. 1 is shown, for example, in Japanese Examined Patent Publication No. 57-15296.
A cross-sectional view of the outlet of a ceiling-mounted or wall-mounted air conditioner,
(1) is the upper part of the outlet, (2) is the curved lower guide wall, (3) is the outlet formed by the upper plate (1) and the guide wall, and (4) is this outlet. A blade supported at the center of (3) by a shaft (5) so that it can freely rotate, and (6) is connected to a blower section by a blower fan at an airflow supply port upstream of the blowout section. With the above structure, the airflow flowing into the supply port (6) flows along the blade (4), and the outlet direction is determined to be upward, downward, or horizontal depending on the inclination angle of the blade (4).
It is blown out from (3). Normally, by setting the blades (4) horizontally during cooling, the airflow blows horizontally at the top of the room, and when heating, the blades (4) are set downward so that the airflow blows downwards. I try to reduce the temperature distribution in the room. However, the air conditioner is usually installed at a place higher than the height of a human being, and the operation of the blades is not easy. In addition, when the season changes, the cooling operation and the heating operation may be performed alternately, so it is necessary to reset the blades (4) each time. It has a drawback that the temperature distribution of air becomes poor.

[Outline of Invention]

The present invention has been made in view of the above points, and a first predetermined direction in which the outlet direction of the outlet is directed to the upper part of the room during the cooling operation, for example, a horizontal direction, and a lower part of the room during the heating operation. 2 predetermined direction, for example, downward direction,
It is an object of the present invention to provide an air conditioner that ensures more comfort by automatically switching and fixing by using a controller such as a micro computer.

Example of Invention

An embodiment of the present invention will be described below with reference to the drawings. Second
FIG. 1 is a perspective view showing a part of a blowing direction changing and fixing mechanism for an outlet according to an embodiment of the present invention. In the figure (4)
Is the blade that determines the blowing direction, and (5) is the rotation axis of the blade.
It is similar to the figure. (7) consists of a cam (7a) fixed to the shaft (5) and a contact (7b) which is opened and closed by the cam surface of this.
A rotation position detection switch for detecting the rotation position of the blade (4),
(8) is a motor that drives the shaft (5) and rotates the blade (4).

FIG. 3 shows opening / closing (ON, OF) of the rotary position detection switch (7).
F) and the rotation position θ of the blade (4).
When the wind from the outlet (3) is at the first direction (4) toward the upper part of the room, for example, at the horizontal angle θ ₁ , the rotation position detection switch (7) contact (7b) is opened, When the first signal or 0 is output and the second direction toward the lower part of the room, for example the angle θ ₂ in the downward direction, the switch (7) closes the contact (7b) and outputs the second signal or 1 To do. At the intermediate position between θ ₁ and θ ₂ , the angle θ ₀ , the contact (7b) is switched between open and closed by the cam (7a). That is, the motor (8) is at a certain time from the contact switching of the switch (7) for a predetermined time, θ ₀ to θ ₁ , and θ ₀ to θ ₂
The blade is configured to stop after being biased for the time of rotation,
(4) is always fixed at either the angle position of θ ₁ or θ ₂ .

FIG. 4 is a circuit diagram showing a blowing direction control device in an embodiment of the present invention. In the figure, (7) is a rotational position detecting switch, and (8) is a blade driving motor, which is the same as in FIG. , (9) is a power source, (10) is a controller such as a microcomputer (hereinafter referred to as a microcomputer), (11) is an air conditioning switching switch, (12) is a motor on / off relay, (12a) is its make contact, (13) is a motor rotation direction switching relay,
(13a) and (13b) are the contact points.

Next, the operation of the embodiment of the present invention shown in FIGS. 2 and 4 will be described with reference to FIGS. Figure 5 shows the microcomputer
It is a flow chart of the blowing direction switching means executed by (10).

First, assuming that the blade (4) is at the position of the angle θ _{1 in} the horizontal blowing direction during the cooling operation, the contact point of the cooling / heating switching switch (11) is on the cooling side, and the rotation position detection switch (7) is OFF and the signal “0” is output. "
Is input to the microcomputer (10). Therefore, microcomputer (10)
In Fig. 5, the operation proceeds from step (14) to (15) and then to (16). Since the position detection signal is "0", it proceeds to OUT as it is, and the switching operation is not performed and the horizontal blowout is performed. Be sustained. That is, during the cooling operation, the blades (4) are not rotated if they are blown horizontally toward the upper part of the room.

Similarly, when the switching switch (11) is on the heating side during heating operation and the blade (4) is at the downward angle θ ₂ and the position detection signal is “1”, the flow of operation of the microcomputer (10) Is IN → step (14) → (15) → (17) → OUT in Fig. 5,
The downward blowing continues. That is, during the heating operation, the blades (4) are not rotated if they are blown downward toward the lower part of the room.

Next, consider a case where the heating operation is switched to when the blades (4) are at the angular position in the horizontal blowing direction θ ₁ . At this time, the switching switch (11) is switched to the heating side, and the position detection switch is switched.
When (7) is OFF, the signal “0” is output, and these contact information are input to the microcomputer (10). Therefore, the microcomputer (1
The operation of (0) proceeds from step (14) to (15) in FIG. 5, and proceeds to step (17) because it is the heating operation, and since the position detection signal is "0" at this point, it enters the downward blowing step (18). . Here, the microcomputer (10) energizes the relay (13) so that the rotation direction of the motor (8) is switched from θ _{1 to} θ _2, and at the same time, the relay (12)
To close the contact (12a). By which the motor
(8) rotates, and the blades (4) start to rotate downward. When the rotation position of the blade (4) reaches from θ ₁ to θ ₀ , the contact (7a) of the position detection switch (7) switches from OFF to ON, and the signal output also changes from “0” to “1”. To do. Microcomputer (10)
Then, after the signal is detected, the relay (12) is energized for a predetermined time T, and then the energization is stopped, the blade (4) is stopped at the second predetermined position, that is, the downward position θ ₂ , and the blowing direction is downward. Fixed in the direction. When the blades are fixed downward, the warm air reaches the lower part of the room and the temperature distribution becomes smaller.

Next, consider a case where the cooling operation is switched to when the blades (4) are at the angular position of the downward blowing direction θ ₂ . At this time, the switching switch (11) is switched to the cooling side, the turning position detecting switch (7) is ON and outputs the signal "1", and the contact information of these is input to the microcomputer (10). Therefore, the operation of the microcomputer (10) is shown in FIG. 5 as steps (14) (15) (16).
As the position detection signal is "1" at this point, the horizontal blowing step (19) is entered. Here, the microcomputer (10) is the motor (8)
The relay (13) is energized and the relay (12) is energized to close the contact (12a) so that the rotation direction of is switched from θ _{2 to} θ ₁ . As a result, the motor (8) rotates and the blades (4) start to rotate upward. When the rotation position of the blade (4) reaches from θ ₂ to θ ₀ , the contact (7) of the rotation position detection switch (7)
a) is switched from ON to OFF, and its signal output also changes from "1" to "0". In the microcomputer (10), the relay (12) is energized for a predetermined time T from the moment when this signal is detected, and then the energization is stopped, and the blades (4) are stopped at the first predetermined position, that is, the horizontal position, and the blowing direction. Is fixed horizontally. When the blades (4) are fixed in the horizontal direction, cold air is blown to the upper part of the room and the temperature distribution in the room becomes smaller.

The above description has dealt only the operation of the cooling heating switchover, below the theta ₀ position blade (4) during the cooling, also operate similarly when rotated manually above the theta ₀ position during heating ，
The blade (4) automatically returns to the correct position.

In this way, horizontal blowing is automatically switched during cooling operation and downward blowing is automatically switched during heating operation.

In the above embodiment, the first predetermined direction is the horizontal direction (θ ₁ = 0), and the second predetermined direction is the downward blow θ ₂ = 90.
However, the first predetermined direction θ ₁ may be any angle as long as the wind does not reach the lower part of the room and the _second predetermined direction θ ₂ also faces the lower part of the room. Of course, any angle can be set as long as the wind reaches the bottom of the room.

〔The invention's effect〕

As described above, according to the present invention, the first predetermined direction toward the upper part of the room during cooling, the second predetermined direction toward the lower part of the room during heating, and the first and second predetermined directions. Since the rotation position detection switch that switches the output signal at the intermediate position of the switch automatically switches the blowing direction, the temperature distribution in the entire room is made uniform, and higher comfort is obtained, and by mistake, manual operation is avoided. Thus, even if the blowing direction is rotated beyond the intermediate position, the blowing direction always automatically returns to the correct direction.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a blowout portion of a conventional air conditioner, FIG. 2 is a perspective view showing a part of a blowout direction changing fixing mechanism according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a diagram showing the relationship between the opening / closing of the position detecting switch and the rotating position of the blades according to FIG. 4, FIG. 4 is a circuit diagram showing the blowing direction control device in one embodiment of the present invention, and FIG. It is a flow chart of the blowing direction switching means executed by the controller. In the figure, (3) is an outlet, (4) is a blade, and (5) is this blade.
(4) rotation axis, (7) rotation position detection switch, (8) motor, (10) microcomputer controller, (11) air conditioning switching switch, (12) and (13) motor It is a control relay of (8). In the figures, the same parts indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Togashi, Kenji Togashi, 3-18-1, Ogashi, Shizuoka-shi, Shizuoka Mitsubishi Electric Corporation Shizuoka Plant (72) Yoshifumi Tezuka, 3--18, Oka, Shizuoka, Shizuoka No. 1 Mitsubishi Electric Co., Ltd. Shizuoka Works (72) Inventor Hiroyuki Umemura 3-18-1, Oka Shizuoka City, Shizuoka Prefecture Mitsubishi Electric Co., Ltd. Shizuoka Works (72) Inventor Kazuaki Isono 3 Oka, Shizuoka City, Shizuoka Prefecture No. 18-1 Mitsubishi Electric Co., Ltd. Shizuoka Plant (56) References JP-A-51-20455 (JP, A) Actual development S57--11441 (JP, U) Actual public S-52-22112 (JP, Y1) )

Claims (1)

[Claims] 1. An air conditioner having an outlet in which the direction of air flow is variable by the rotation of the blades. A controller such as a microcomputer, and the direction of the air blown out by the blades of the room in response to an output signal from the controller. A blade rotation motor that changes the first predetermined direction toward the upper part and the second predetermined direction toward the lower part of the room, and the blade is an intermediate position between the first predetermined direction and the second predetermined direction. A rotational position detection switch that outputs a first signal when it is on the first predetermined direction side from the position and a second signal when it is on the second predetermined direction side is provided, and the rotational position detection switch is provided during the cooling operation. Outputs a signal for rotating the blade toward the first predetermined direction when the second signal is output, and the rotation position detection switch rotates the blade toward the second predetermined direction when the first signal is output during the heating operation. The blade rotating motor The blowing direction switching means for outputting each of the blade rotation when the rotational position detection switch output signal switching the first wings after a predetermined fixed time from the time of the
Alternatively, the air conditioner is characterized in that the controller is provided with a blade position fixing means for outputting a signal for stopping at a second predetermined position to the blade rotation motor.