JP2597012B2 - Air direction change device for air conditioner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a wind direction changing device for an air conditioner.

[Prior Art] In a conventional air conditioner, a wind direction changing device that automatically changes a wind direction of conditioned air blown out from an outlet is a step capable of rotating a wind direction changing plate provided in the outlet in forward and reverse directions. The wind motor is driven to rotate, and the wind direction is controlled by continuously changing the wind direction.

[Problems to be solved by the invention]

The rotation control of the wind direction changing plate driven by the stepping motor is to improve the comfort of the occupant by continuously changing the wind direction. However, in the conventional device, the rotation of the wind direction changing plate is controlled. Is performed at a constant speed and angle range, and there is no subtle change in the flow of the blown air, which is insufficient to give a rhythmic wind close to a natural wind.

SUMMARY OF THE INVENTION In order to solve the above-described problems, an object of the present invention is to provide a means for changing the rotation speed and rotation range of a wind direction changing plate to give a resident a flow of air close to a natural wind. .

[Means for solving the problem]

The present invention relates to a wind direction changing device for rotating a wind direction changing plate provided at an air outlet of an air conditioner by driving a step-type motor, wherein the wind direction changing plate performs forward rotation and reverse rotation starting from a predetermined horizontal blowing direction. When repeatedly moving in the downward blowing direction, returning to the predetermined horizontal blowing direction after becoming the predetermined downward blowing direction, repeating this, and at the time of reverse rotation moving to the horizontal blowing direction with respect to the forward rotation moving to the downward blowing direction A control device for controlling the number of pulses applied to the step-type motor is provided so as to rotate faster.

[Action]

In the above, a predetermined program is incorporated in the control device in advance, and the control device rotates the step-type motor according to the program, and the rotation of the step-type motor is transmitted to the wind direction changing plate.

The wind direction change plate, in which the rotation according to the predetermined program is transmitted from the step type motor, shifts in the downward blowing direction while repeating forward rotation and reverse rotation starting from the predetermined horizontal blowing direction,
After the predetermined downward blowing direction is reached, the return to the predetermined horizontal blowing direction is performed, and the rotation is repeated.

In addition, the rotation is faster at the time of the reverse rotation of the horizontal blowing direction than at the time of the forward rotation of the lower blowing direction.

Therefore, the flow of conditioned air blown out by the air conditioner is
The unnaturalness in the case of the conventional device in which the rotation of the wind direction change plate is within a certain speed and angle range is eliminated, the wind becomes close to a natural wind, and the comfort for the occupant is further improved.

〔Example〕

One embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view of an air conditioner provided with a wind direction changing device. Reference numeral 1 denotes a main body of the air conditioner. An air inlet 2 is provided on a front surface and a conditioned air outlet 3 is provided on a lower surface. ing. Reference numeral 4 denotes a wind direction changing plate which is rotatably attached to the outlet 3 and is connected to a stepping motor 5 which can rotate forward and backward.

FIG. 2 shows a block diagram of a control device for controlling the stepping motor. The control device 10 comprises a reference pulse generating means 11 for outputting a reference pulse, and a reference pulse generating means.
A pulse number switching means 12 for inputting a reference pulse from 11 and sequentially outputting pulses of a pulse number corresponding to the rotation angle of the wind direction changing plate 4, and a forward / reverse rotation pulse by inputting an output signal of the pulse number switching means 12 And a step-type motor drive means 15 for inputting a forward / reverse rotation pulse from the forward / reverse changeover means 14 and outputting a motor drive pulse. The output motor drive pulse is input to the step type motor 5 to drive the same. The operation of the air conditioner having the wind direction changing device configured as described above will be described with reference to FIG. In the figure, the air sucked from the suction port 2 is cooled or heated when passing through the heat exchanger 6 to be conditioned, and is urged by the fan 7 to be guided to the wind direction changing plate 4. Since the wind direction changing plate 4 is vertically rotated by the stepping motor 5, the air guided to the wind direction changing plate 4 is changed in the wind direction in accordance with the vertical rotation of the wind direction changing plate 4, and the air flows from the outlet 3 to the room. To be blown out.

The wind direction changing plate 4 for changing the wind direction is provided with a control device 10
The rotation angle range is changed as shown in FIG. 4, and the rotation speed is changed.

Control by the control device 10 for changing the rotation angle range and the rotation speed of the wind direction changing plate 4 will be described below.

In the control device 10, the reference pulse output from the reference pulse generating means 11 is input to the pulse number switching means 12, and the pulse number switching means 12 is controlled based on a program stored in the switching means 12 in FIG. As shown in the figure, the number of pulses 750, 561, 37 corresponding to the rotation angles a, b, c, d of the wind direction change plate 4
Outputs 4,187 pulses.

The pulse output from the pulse number switching means 12 is input to the forward / reverse switching means 14, and the forward / reverse switching means 14 subtracts the number of pulses of a pulse inputted afterward from the number of pulses of a previously inputted pulse, and a predetermined number of pulses. A forward / reverse rotation pulse for rotating the wind direction changing plate 4 forward (upward rotation) or reverse rotation (downward rotation) by the number of pulses is output.

The forward / reverse rotation pulse output from the forward / reverse switching means 14 is output by the step type motor driving means 15 in the case of forward rotation.
83.3 pps, in the case of reverse rotation, a motor drive pulse with a pulse speed of 125 pps is output, the step type motor 5 is driven, and the wind direction blown out by the air conditioner 1 is changed.

According to the above, the wind direction changing plate 4 is, for example, pulse number N750 → 56
1 → 750 → 374 → 561 → 187 →… the rotation angle is a →
b → a → c → b → d →..., and shifts to the downward blowing direction while repeating forward and reverse rotations starting from a substantially horizontal predetermined horizontal blowing direction. In the forward direction (represented by the dashed line in FIG. 4) and in the reverse direction (fourth direction).
(Indicated by a broken line in the drawing), the conditioned air is rapidly rotated, so that the flow of the conditioned air blown into the room is slightly changed at any time, and a flow close to a natural wind is generated.

In this embodiment, the wind direction changing plate 4 is rotated in the vertical direction. However, a plurality of left and right changing plates are provided at the air outlet 3 via connecting arms, and
, The rotation speed and the rotation angle range can be changed.

〔The invention's effect〕

The wind direction changing device for an air conditioner of the present invention is provided with a control device to control the driving of a step motor, and a wind direction changing plate connected to the step motor rotates forward and backward starting from a predetermined horizontal blowing direction. Is repeated in the downward blowing direction, returns to the predetermined horizontal blowing direction after the predetermined downward blowing direction is reached, and is repeated, and the reverse rotation is shifted in the horizontal blowing direction with respect to the forward rotation in which the downward blowing direction is performed. Since the air rotates faster at the time, the conditioned air blown out from the air outlet of the air conditioner has a flow similar to a natural wind, and the comfort for the occupants is further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an air conditioner provided with a wind direction changing device according to one embodiment of the present invention, FIG. 2 is a block circuit diagram of a stepping motor control device of the above embodiment, and FIG. Partial cross-sectional view of an air conditioner including a wind direction changing device of one embodiment,
FIG. 4 is an explanatory diagram showing an example of the rotational movement of the wind direction changing plate of the embodiment. 1 ... air conditioner body, 2 ... inlet, 3 ... outlet
4 ... wind direction change plate, 5 ... step motor, 10 ... control device, 11 ... reference pulse generating means, 12 ... pulse number switching means, 14 ... forward / reverse rotation switching means, 15 ... step motor Drive means.

Claims (1)

(57) [Claims] 1. A wind direction changing device for rotating a wind direction changing plate provided at an air outlet of an air conditioner by a step-type motor drive, wherein the wind direction changing plate rotates forward and backward starting from a predetermined horizontal blowing direction. Is repeated in the downward blowing direction, returns to the predetermined horizontal blowing direction after the predetermined downward blowing direction is reached, and is repeated, and the reverse rotation is shifted in the horizontal blowing direction with respect to the forward rotation in which the downward blowing direction is performed. A wind direction changing device for an air conditioner, comprising a control device for controlling the number of pulses applied to the step-type motor so as to rotate faster at the time.