JPS63194149A - Air quantity controller for air-conditioner - Google Patents

Abstract

PURPOSE:To prevent the generation of hissing sound and effect comfortable control of the air quantity, by a method wherein the title controller is provided with a control unit, outputting a revolution operation command to a controlled blade driving unit simultaneously with the outputting of low speed revolution command for a given time for operating the controlled blade to a fan speed switching unit. CONSTITUTION:When normal heating is switched to local heating, a command to operate a controlled blade 4 is outputted from a signal processing unit 10 to a control unit 9. The control unit 9 commands the operation starting of the controlled blade 4 to a controlled blade driving unit 6 and the switching of the rotating speed of a fan motor 7 from a high speed rotation n1rpm to a low speed rotation n3rpm for a given period of time t1 to a fan speed switching unit 8 simultaneously. A controlled blade driving unit 6 revolves the controlled blade 4 counterclockwise while the fan speed switching unit 8 switches the revolution speed of the fan motor 7 from the normal revolution n1rpm to the low speed revolution n3rpm and holds it for a given period of time t1. During this period of time, the controlled blade 4 finishes the revolution thereof and is stopped at the position of the local heating. When the time t1 has elapsed, a command to switch the revolution speed n2rpm of local heating is outputted from the signal processing unit 10 to the fan speed switching unit 8 while the speed switching unit 8 provides the fan motor 7 with a command to operate with the revolution speed n2rpm.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air volume control device for an air conditioner used in general homes.

(Prior Art) A conventional air volume control device for an air conditioner will be explained with reference to FIGS. 3 and 4.

FIG. 3 is a structural diagram of the main parts showing the mechanical part of the wind climate control device of the air conditioner. Inside the air conditioner body 1, there is a fan 2 for blowing air, and at the bottom of the air conditioner body 1, there is a fan 2 for blowing air. Control blades 4 for controlling the direction and volume of air blown out are provided inside each of the air outlets 3 provided. Note that the rotation axis 5 of the control blade 4 is located at a position offset from the center of the control blade 4.

The operation of the air volume control device for an air conditioner configured as described above will be explained.

As shown in FIG. 3(A), in the case of normal heating, the control blades 4 of the air outlet 3 are set so that the longer tip points downward and air is blown downward from both sides of the control blade 4. The fan 2 rotates at a predetermined rotational speed and blows out a predetermined amount of air. The dashed arrow indicates the flow of warm air at that time.

Next, when switching to local heating, the rotation shaft 5 of the control blade 4 rotates counterclockwise, passes through a position parallel to the air outlet 3 shown in FIG. As shown in FIG. 3(C), the longer end is in a position to contact the soil wall of the outlet 3 and close the passage, with the longer end facing downward. In this case, when the control blades 4 begin to rotate, the rotational speed of the fan 2 is reduced.

FIG. 4 is a timing diagram showing the above-mentioned operation.
) shows the rotational speed of the fan 2, and FIG. 4(B) shows the rotating state of the control blade 4, respectively.

In Fig. 4(A), when the air conditioner is normally operated for heating, the fan 2 rotates at a high speed of nirpm, but as shown in Fig. 4(CB), the control blade 4 begins to rotate, the local heating rotation speed n
, rpm, and the rotational speed remains n, rpm continuously during and after the rotating time t.

The state of local heating shown in Figure 3 (C) is as shown in Figure 3 (A).
Compared to the normal heating state shown in , the actual air outlet area of the air outlet 3 is smaller, but the rotational speed of the fan 2 is lower, so the wind speed remains the same.

Furthermore, the temperature of the hot air blown out increases by the amount that the air volume decreases. In this way, when heating one area, the overall heating capacity is reduced by the amount of air volume that is lower than during normal heating, but the area within which the warm air reaches can receive warmer air.

(Problems to be Solved by the Invention) However, in the above-described landscape control method, at the same time as the control blades 4 begin to rotate, the fan 2 decreases to the rotational speed for local heating, and as shown in FIG. 3(C). However, in the middle of the rotation of the control blade 4, there is a position where the control 14 blocks the air outlet 3 as shown in FIG. There was a problem with wind noise.

The present invention solves the above problems and provides an air volume control device for an air conditioner that does not generate unpleasant wind noise.

(Means for Solving the Problems) In order to solve the above problems, an air volume control device for an air conditioner according to the present invention includes a rotatable control blade that adjusts the blowout area of the blowout port and the up and down blowout direction. , a control vane drive section that drives the rotating shaft to which this control vane is attached, a fan speed switching section that switches the rotational speed of the fan, and an instruction to switch from normal heating to local heating, or from local heating to normal heating. In response to this, a rotation signal is sent to the control blade drive unit, and at the same time, the fan speed switching unit switches to low speed rotation for control blade rotation, and maintains this for a certain period of time required for control blade rotation. and a control section that outputs signals.

(Function) With the above configuration, the amount of air blown out while the control blades are rotating is lower than the amount of air when heating one area, so unpleasant wind noise is not generated and heating conditions can be switched in a comfortable manner. .

(Example) An example of the present invention will be described with reference to FIGS. 1 to 3.

The mechanical parts of the air conditioner according to the present invention are the same as those shown in FIG. 3, which shows the conventional side, so a description thereof will be omitted. FIG. 1 is a block diagram of an air volume control device according to the present invention. The converting fan speed switching section 8 and the above-mentioned control vane drive section 6
The controller 9 instructs the fan speed switching unit 8 to start rotation, and the control unit 9 instructs the fan speed switching unit 8 to switch to a low rotational speed at the same time as the rotation, and processes input signals to set heating conditions for the air conditioner. It is composed of a signal processing section 10.

The operation of the air volume control device for an air conditioner configured as described above will be explained. When the heating condition of the air conditioner is switched from normal heating to local heating, the signal processing section 10 issues an instruction to the control section 9 to rotate the control blades 4. The control unit 9 is
At the same time, the control blade driving unit 6 is instructed to start rotating the control blade 4, and the fan speed switching unit 8 is instructed to switch the rotational speed of the fan motor 7 from nirpm to a low speed n3rp1m for a certain period of time.

Upon receiving this instruction, the control vane drive unit 6 rotates the control vane 4 located at the position shown in FIG. 3(A) counterclockwise, passes through the position shown in FIG. 3(B), and then moves to the position shown in FIG. 3(C). Stop at the position.

On the other hand, upon receiving the above instruction, the fan speed switching unit 8 switches the rotation speed of the fan motor 7 from the normal heating n□ rpm to the low speed n, rpm, and continues for a certain period of time t1.

During this time, the control blade 4 completes its rotation and stops at the local heating position shown in FIG. 3(C). When the time t□ has elapsed, the signal processing unit 10 issues an instruction to the fan speed switching unit 8 to switch to the local heating rotation speed n, rpm, and upon receiving this instruction, the fan speed switching unit 8 causes the fan motor 7 to rotate at nzrpH. give instructions to do so.

Figure 2 is a timing diagram showing the above operation.
) shows the rotational speed of the fan 2, and FIG. 2(B) shows the rotating state of the control blade 4, respectively.

In Fig. 2 (A), when the air conditioner is operated in normal heating mode, fan 2 rotates at a high speed of nlrpm, but when the normal heating mode is switched to local heating mode, As shown in FIG. 2(B), at the same time as the rotation of the control blade 4 begins, the rotational speed of the fan 2 is switched to a low speed n3 rpm as shown in FIG. 2(A), and the amount of air blown becomes small.

When the constant time t1 required for rotation of the control vane 4 has elapsed and the control vane 4 stops at the local heating position, the rotational speed of the fan 2 is switched to n, rpm for local heating. In addition,
When switching from local heating to normal heating, it is time to perform the above operation in reverse.

In this way, while the control blades 4 are rotating, the rotational speed of the fan 2 is reduced and the amount of air blown out is extremely small, so no wind noise is generated.

(Effects of the Invention) As explained above, according to the present invention, when switching between normal heating and local heating, the rotational speed of the fan is slowed down while the control blade rotates to change the airflow volume from the outlet. Since the amount of air blown out is small, generation of wind noise can be prevented and comfortable air amount control can be performed.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of the air volume control device for an air conditioner according to the present invention and its command system, Fig. 2 is a timing diagram showing its operation, and Figs. 3 (A), (B), and (C).
1 is a main part configuration diagram showing the mechanical part of the air volume control device of an air conditioner, (A) shows normal heating, (B) shows intermediate heating condition switching, (C) shows local heating, FIG. 4 is a timing diagram showing the conventional operation. 1...Air conditioner body, 2...Fan, 3.
...Blowout port, 4...Control vane, 5...Rotating shaft, 6...Control vane rotating section, 7...Fan motor, 8...Fan speed switching section, 9... Control unit, 10... signal processing unit. Patent applicant: Matsushita Electric Industrial Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] A rotatable control vane provided at the outlet to adjust the blowout area and direction, a control vane drive unit that rotates the control vane, a fan that sends out temperature-adjusted air, and the rotation of this fan. At the same time, a rotation instruction is issued to the fan speed switching unit that changes the speed and the control blade drive unit mentioned above.
An air volume control device for an air conditioner, comprising: the fan speed switching unit described above; and a control unit that issues a low-speed rotation instruction for a certain period of time to rotate the control blades.