JPS6339822B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a control device for a wind direction changing device suitable for use in an air conditioner such as a room air conditioner, and particularly relates to a control device for a wind direction changing device suitable for use in an air conditioner such as a room air conditioner. It aims to equalize the indoor temperature distribution regardless of the location, or conversely, intentionally creates a uniform indoor temperature distribution to achieve spot cooling, improve energy efficiency, and improve comfort. .

[Conventional technology]

As one of the conventional wind direction changing devices, the one shown in FIGS.
It is known from Japanese Patent No. 22658 and is used in products.

In this figure 1, 1 is the indoor unit of the separate air conditioner, 2 is the air inlet, 3 is the air outlet, and 4 is the air inlet.
is a wind direction changing device, etc.

This wind direction changing device 4 is provided at the air outlet 3, and has a plurality of deflection blades 4a attached to a rotating shaft 4b at predetermined intervals. One end of the rotating shaft 4b is supported by a bearing 4c at the air outlet 3, and the other end is connected to a synchronous motor 4e (equipped with a reduction gear) via a coupling 4d. The coupling ring 4d also serves as a wind direction indicator. As shown in an enlarged view in FIG. 2, the deflection blades 4a have a plurality of substantially S-shaped cross sections that are parallel to each other, and are pivoted to the rotating shaft 4b.

The synchronous motor 4e is connected to a remote control box 5 via electrical wiring 6, and the remote control box 5 is provided with an on/off switch 4f. The control system for the synchronous motor 4e is shown in FIG. 3, and as is clear from FIG. ing.

FIG. 4 shows the elapsed time on the rotating shaft 4b, therefore,
The relationship with the rotation angle (position) of the output shaft of the synchronous motor 4e is shown. With conventional wind direction changing devices, the number
The deflection blade 4a was rotated at a constant rotation speed of approximately RPM.

FIG. 5 shows the relationship between the elapsed time and the rotation angle of the deflection blade 4a with respect to the wind direction. For example, at time t ₁ and rotation angle P ₁ , the wind direction is front, and at time t ₅ and rotation angle when the rotation axis has turned 90°, At P ₅ , it moves to the left, at time t ₁₁ when the rotation axis has turned 225 degrees, and at rotation angle P ₁₁ , it moves to the upper right, and so on, and when the rotation axis turns 360 degrees, it returns to the original rotation angle P ₁ , and one cycle ends. . The relationship between the rotation angle of the deflection blade 4a and the wind direction and the reason why the wind direction changes are detailed in the above-mentioned publication, and therefore will not be described here.

This airflow direction changing device has advantages such as making the indoor temperature distribution uniform and increasing the speed at which the room temperature drops (in the case of cooling).In terms of structure, it is also rotary, so it does not require a complicated mechanical linkage mechanism. It was hot.

[Problem that the invention seeks to solve]

However, as a drawback, it may be difficult to make the temperature distribution uniform depending on the installation position of the air direction changing device 4 in the room, for example, the indoor unit 1 of a room air conditioner. Also, if you want to make the temperature uneven in a specific part of the room for spot cooling, you can stop the rotation of the deflection blade 4a at a predetermined position, but in this case, the cold air will continue to hit the human body, In addition to being harmful to health, there were also problems such as a decrease in the speed at which the room temperature cooled. Of course, it was almost impossible to spot-cool the temperature at multiple locations in the room.

Figure 6 shows the temperature distribution when the indoor unit 1 is installed in the center of the room 8, where A to C are approximately 0.3 deg.
It is an isotemperature distribution curve of the interval. While the deflection blade 4a is rotating, the temperature unevenness decreases to within about 4 degrees Celsius, but when it is stopped, this increases to about 4 degrees Celsius.

Figure 7 shows a case where the indoor unit 1 is installed only in the left corner of the room 8. With the conventional control method in which the deflection blades 4a are rotated at a constant speed, the left center of the room is always the coolest and the temperature unevenness is also about. There was a drawback that the temperature increased by 2deg℃.

[Means for solving problems]

The present invention has been made to eliminate the above-mentioned conventional drawbacks, and includes a wind direction pattern setter that sets a wind direction pattern, and a drive electric motor that is controlled to correspond to the wind direction pattern set by the wind direction pattern setter. A central controller is provided to control the speed of movement of the deflector blades.

[Effect]

This central controller stores the pattern information set by the wind direction pattern setting device, and issues a drive command to the drive electric motor as a result of processing a determination process between this information and the rotational position detection information of the deflection blade.

〔Example〕

FIG. 8 is an external view of an indoor unit of a separate room air conditioner to which one embodiment of the present invention is applied.
In FIG. 8, parts that are the same as those in FIG. 1 are given the same reference numerals, and their explanation will be omitted, and the parts that are different from those in FIG. 1 will be mainly described. In the figure, 4d is a coupling, 4h is an angle detector for the deflection blade 4a, 4i is a wind direction pattern indicator, and 9 is a microcomputer 9a (Figure 9).
This is the main circuit for setting and driving the wind direction pattern (hereinafter referred to as the main circuit) mainly consisting of the following, and serves as a central controller. The basic configuration of the wind direction changing device 4 centered on the deflection blade 4a is almost similar to that in FIG.
The biggest difference in configuration is that an angle detector 4h is provided.

FIG. 9 is a block diagram of a circuit configuration of a control device for a wind direction changing device according to the present invention, in which 4g is a wind direction pattern setter and 4f is a mode selection switch. The mode selection switch is provided so as to effectively make the temperature distribution more uniform or, conversely, make it more uneven like spot cooling, depending on the size of the room and the air speed of the indoor fan.

Further, 4i is a wind direction pattern display, 9 is a central controller (main circuit), 9c is a clock circuit, 9a is a microcomputer, 9b is a drive circuit, and 4e is a pulse motor as a driving motor. Synchronous motors, DC brushless motors, etc. can also be used in place of pulse motors.
4 is a wind direction changing device (referred to as a louver), and 4h is an angle detector.

The clock circuit 9c generates a fundamental frequency signal for the operation of the microcomputer 9a or the pulse motor 4e. The mode selection switch 4f has three modes: "louver stop", "louver continuous", and "louver pattern arbitrary setting".

Here, the outline of the operation shown in FIG. 9 will be described with reference to the flowchart shown in FIG. 17. First, the process starts at step A in FIG. 17, and if the mode selection switch 4f is stopped at step B, the process moves to step C, where the drive pulse is stopped. If the mode selection switch 4f is not stopped at step B, the process moves to step D.

In this step D, if the mode selection switch 4f is not continuous with the louver, the process moves to step E and checks whether or not the wind direction pattern has been set by the wind direction pattern setting device 4g.If the wind direction pattern has not been set, the process moves to step F. Then, the wind direction pattern request is displayed on the wind direction pattern display 4i, and the process returns to step B again.

Further, in step D, if the mode selection switch 4f is set to continuous louver mode, the process moves from step D to step G. In step G, it is checked whether the cycle selection switch is set to large or not. Although this cycle selection switch is not shown in Figures 8 and 9, it can be used to effectively make the temperature distribution more uniform or conversely to make spot cooling uneven, depending on the size of the room and the air speed of the indoor fan. It is set out to be implemented in

In this step G, if the cycle selection switch is large, the process moves from step G to step H,
After Δt ₂ , a drive pulse is sent from the microcomputer 9a to the pulse motor 4e through the drive circuit 9b, and the process returns to step B again.

On the other hand, in step G, if the period selection switch is not large, the process moves from step G to step I, and after _Δt1 , a drive pulse is sent to the pulse motor 4e in the same manner as above, and the process returns to step B.

Furthermore, in step E, if the wind direction pattern has been set by the wind direction pattern setting device 4g, the process moves from step E to step F, where the rotation angle detector 4h detects the rotation angle of the pulse motor 4e. As a result of the detection, in step K, it is determined whether the current position of the rotating shaft of the pulse motor 4e is on the set wind direction pattern, and if it is on the set wind direction pattern, the process moves to step G described above. Further, if it is not on the set wind direction pattern, the process moves from step K to step L.

In step L, a drive pulse is sent from the microcomputer 9a to the pulse motor 4e through the drive circuit 9b after _Δt0 , and the process returns to step B again. Note that Δt ₀ to Δt ₂ in steps H, I, and L are Δt ₀
There is a relationship of ≪Δt ₁ <Δt ₂ .

As is clear from the above, when the louver is continuous, the operation is almost equivalent to the conventional one shown in FIGS. 4 and 5. However, there is a difference that conventionally the rotation was continuous but in the present invention the rotation is intermittent.

In the louver pattern arbitrary setting mode, the operation of the pattern setting device 4g is accepted by the microcomputer, and the setting pattern is stored in the memory (RAM). Pattern setting is performed by operating the pattern setting device 4g while looking at the display on the pattern display 4i.

FIG. 10 shows an example of pattern setting. On the pattern display 4i, the wind direction indicator lamps corresponding to the rotational angle positions _P1 to _P16 are first lighted faintly in the shape of a figure 8, and then blink for a few seconds in order starting from _P1 .
If the pattern setter 4g is pressed during blinking, the rotation angle position is stored and set in the memory. In Fig. 10, the rotation angle position P ₁ →P ₂ →P ₈ →P ₉ →P ₁₀ →……
P ₁₅ →P ₁₆ →P ₁₇ →P ₂ →P ₈ →...... is set, and rotation angle position P ₃ →P ₄ →P ₅ →P ₆ →P ₇ is not set.

Figures 12 and 13 show the shaft rotation angle position Pi and the time relationship between the positions, and the rotation angle position P ₃ → P ₄ → P ₇ , which is not set in the pattern, is passed within a short time. , it is actually short cut to the rotational angular position P ₂ →P ₈ . The stored pattern information is calculated and compared with the signal of the rotation angle detector 4h of the louver 4 at every reference time created by the clock circuit 9c, and it is determined whether to remain at the current position or to pass, and pulses are sent through the drive circuit 9b. Drive the motor 4e.

According to the pattern setting shown in FIG. 10, the temperature distribution pattern shown in FIG. 7 is improved as shown in FIG. 11.

By utilizing the reversible rotatability of the pulse motor 4e, it is also possible to operate the setting pattern shown in FIG. 10 as shown in FIG. 14. In this case the rotation angle position is P ₁
→P ₂ →P ₁₇ →P ₁₆ →……P ₁₀ →P ₉ →P ₈ →P ₉ →P ₁₀ →
......P ₁₆ →P ₁₇ →P ₂ .

Figure 15 is an equivalent circuit that realizes Figure 13.
FIG. 6 is an equivalent circuit that realizes FIG. 14. In the figure, 9d and 9e are DC power supplies.

FIG. 18 is an example of setting a wind direction pattern to make the temperature distribution uniform. Short cuts are made to rotation angle positions P ₁₅ → P ₂ and P ₇ → P ₁₀ . FIG. 19 is an example of a temperature distribution diagram when the indoor unit 1 is located in the center of the room 8, and the temperature distribution is much improved compared to FIG. 6. The same effect can be obtained as the continuous mode of the louver, as the rotation angle position P ₂ →P ₃ →...
This can be achieved by setting the indoor fan speed to strong winds in P ₇ and P ₁₀ → P ₁₁ → P ₁₅ , and weak winds in other cases, but if the indoor fan speed becomes strong winds, problems remain in terms of noise.

Figure 20 is another example of setting a wind direction pattern.
As shown in the figure, it is possible to spot-cool two locations in the room 8 (the areas circled by circles).

As described above, according to the present invention, it is possible to make the indoor temperature distribution uniform almost regardless of the installation of the air conditioner in the room, or to intentionally make it non-uniform to perform spot cooling. The former improves comfort by reducing temperature unevenness, while the latter increases the average temperature in the room, but allows spot cooling to maintain the required temperature in only some spaces, leading to improved energy savings. Of course, spot cooling can be achieved by keeping the deflection blades 4a of the wind direction changing device 4 stationary, but cold air is constantly blown directly onto the human body, which is not good for health, and the rate of temperature fall at the start of cooling is also reduced.

In the above explanation, regarding pattern setting, information such as the installation position of the air conditioner in the room is preset, a pattern setting device is installed in several zones in the room, and the pattern setting device is used to set the temperature of the zone. It is also possible to decide whether to set it high or low. There is essentially no problem in implementing the present invention even if the electric motor is other than a pulse motor.

If indoor fan wind speed control and wind direction pattern change control are used together, the effect of making the temperature distribution more uniform or non-uniform will be increased. Furthermore, a method of selecting a wind direction pattern from one stored in a memory in advance is also conceivable.

〔Effect of the invention〕

As described above, according to the control device for the wind direction changing device of the present invention, the driving electric motor is controlled to correspond to the wind direction pattern set by the wind direction pattern setting device, thereby selectively varying the movement speed of the deflector blades. As a result, the wind direction can be arbitrarily selected in any desired direction, up, down, left, or right. Therefore, for example, in the case of an air conditioner, it is possible to equalize the indoor temperature distribution regardless of the position where the air conditioner is installed indoors. Can be done.

On the contrary, it has the advantage of being able to achieve spot cooling, improve energy saving, and improve comfort by intentionally adjusting the indoor temperature distribution.

[Brief explanation of the drawing]

Figure 1 is an external view of an indoor unit of a conventional separate type air conditioner with a wind direction changing device, Figure 2 is a diagram showing the configuration of the wind deflector blades used in the indoor unit in Figure 1, and Figure 3 is a diagram showing the control electrical system. The circuit diagram, Fig. 4 is a control explanatory diagram for the indoor unit in Fig. 1, and Fig. 5
The figure is a wind direction pattern diagram, Figures 6 and 7 are indoor temperature distribution diagrams, Figure 8 is an external view of an indoor unit of a separate type air conditioner to which an embodiment of the control device for a wind direction changing device of the present invention is applied, Figure 9 is a block diagram showing the configuration of the control device for the same air direction changing device as above;
The figure is a wind direction pattern diagram for the control device of the same air direction changing device as above, FIG. 11 is an indoor temperature distribution diagram based on the wind direction pattern diagram of FIG. 10, and FIGS. Change control explanatory diagram, Fig. 15 is a diagram showing a control circuit for realizing the shaft rotation angular position and time relationship shown in Fig. 13 in the control device of the same air direction changing device, and Fig. 16 is the control device of the same air direction changing device. Fig. 17 is a flowchart for explaining the operation of the control device for the wind direction changing device shown in Fig. 14, Fig. 18 is a flowchart for explaining the operation of the control device for the wind direction changing device shown in Fig. A diagram showing an example of the wind direction pattern setting in the control device of the change device, Fig. 19 is a temperature distribution diagram when the indoor unit to which the control device of the above air direction change device is installed is installed in the center of the room, and Fig. 20 is a diagram showing the wind direction pattern as above. FIG. 2 is a diagram showing another example of wind direction pattern setting in the control device 1 of the change device.
Figure 1 is a temperature distribution diagram when indoor units to which the control device for the air direction changing device described above is applied are installed at two locations in a room. 1... Indoor unit, 2... Air intake port, 3...
...Cold air outlet, 4...Wind direction changing device, 4a...Deflection blade, 4b...Rotating shaft, 4c...Bearing, 4d...
Coupling ring, 4e...Synchronous motor, 4f...Mode selection switch, 4g...Wind direction pattern setter, 4h...Angle detector, 4i...Wind direction pattern display, 9...Main circuit, 9a...Microcomputer , 9b...drive circuit, 9c...clock circuit. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. A plurality of deflector blades that are integrally attached at a predetermined interval to a rotating shaft that is pivotally supported by an air outlet, and that change the wind direction by rotation of the rotating shaft;
A driving electric motor that drives the rotating shaft, a wind direction pattern setting device that sets the wind direction pattern, and a movement of the deflector blades by controlling the driving electric motor so as to correspond to the wind direction pattern set by the wind direction pattern setting device. Equipped with a central controller that controls the speed, this central controller stores the pattern information set by the wind direction pattern setting device, judges this information and the rotational position detection information of the deflection blade, and issues a drive command to the drive motor. A control device for a wind direction changing device, characterized in that it emits. 2. The control device for a wind direction changing device according to claim 1, wherein the driving electric motor uses a pulse motor. 3. The control device for a wind direction changing device according to claim 1, wherein the driving electric motor uses a DC brushless motor. 4. The control device for a wind direction changing device according to claim 1, wherein the driving electric motor uses a synchronous motor. 5. Claims 1 to 5, characterized in that the central controller issues a drive command to control the drive motor and the blower motor in association with each other based on the information on the wind direction pattern set by the wind direction pattern setting device. A control device for a wind direction changing device according to any one of Item 4. 6. Any one of claims 1 to 5, which has a wind direction pattern display device that displays wind direction pattern information set by a wind direction pattern setting device while the pattern is valid and also displays the current wind direction. A control device for a wind direction changing device according to claim 1.