JP3404252B2 - Ventilation fan with electric shutter - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation fan with an electric shutter for performing ventilation from one room to a plurality of rooms by opening and closing a shutter.

[0002]

2. Description of the Related Art In recent years, in order to improve the living environment, ventilation fans with electric shutters capable of ventilating a plurality of rooms are becoming widespread, and can be easily understood when the electric shutters are in an abnormal state. There is an increasing demand for what to do. Conventionally, the one shown in FIG. 6 has been known as an example of this type of ventilation fan with an electric shutter. The configuration will be described below with reference to FIG.

As shown in the figure, a ventilation fan main body 100 for ventilating a plurality of rooms is provided with an electric shutter 101 for blocking and opening the air passage, and a control circuit 102 for controlling the ventilation fan main body 100 and the electric shutter 101. The stepping motor 104 that electrically opens and closes the shutter 103 and the stopper 105 that stops the shutter 103 at the open position and the fully closed position are provided inside 101, and the stepping motor 10 is provided inside the control circuit 102.
Specified step rotation means 106 for rotating the motor in the clockwise direction and the counterclockwise direction by a prescribed step when viewed from the motor shaft of 4.
Was provided.

[0004]

In such a conventional ventilation fan with an electric shutter, when the electric shutter 101 becomes abnormal and ventilation in the room is not performed, whether the ventilation fan main body 100 is abnormal or not is electrically operated. Shutter 10
There is a problem that it is difficult to determine whether 1 is abnormal, and it is not possible to determine whether the shutter 103 is really in the open state.

SUMMARY OF THE INVENTION The first object of the present invention is to provide a ventilation fan with an electric shutter, which displays an abnormality when the electric shutter becomes abnormal and can judge the abnormality of the electric shutter at a glance.

A second object of the present invention is to provide a ventilation fan with an electric shutter in which, when there are a plurality of electric shutters, it is possible to determine an abnormal electric shutter by continuously driving the electric shutters.

A third object is to memorize the abnormality when the electric shutter becomes abnormal, display the abnormality when the abnormality occurs a prescribed number of times in succession, and further stop the output of the ventilation fan main body.
It is to inform the user of the abnormality as soon as possible.

[0008]

SUMMARY OF THE INVENTION In an electric fan with an electric shutter according to the present invention, a ventilation fan main body formed to ventilate a plurality of rooms and a plurality of ventilation fans provided to open and close the ventilation passages of the ventilation fan main body. An electric shutter, a stepping motor for opening and closing the shutter provided in the electric shutter, a limit switch for confirming that the electric shutter is opened, and a specified step rotation means for rotating the stepping motor forward and backward by a specified number of steps. An abnormality detecting unit that determines the operating state of the limit switch when the electric shutter moves in the opening direction; an abnormality display unit that blinks an LED when the abnormality detecting unit determines an abnormality; and the abnormality detecting unit. Continue to operate the stepping motor for the specified number of steps even when it is determined to be abnormal by And a control circuit provided more becomes the means and the electric shutter continuation means controls the plurality of the electric shutter and ventilating fan body by the control circuit, it is determined that the abnormality by the abnormality detecting means
Even when the electric shutter continuation means is used,
By continuously opening and shutting off the
Of the shutters, the electric shutter that is not driven is abnormal.
It is configured to determine that .

According to the present invention, when the electric shutter becomes abnormal, the abnormality is displayed, and when there are a plurality of electric shutters ,
Also, it is possible to provide a ventilation fan with an electric shutter capable of determining abnormality of the electric shutter.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention includes a ventilation fan main body formed so as to ventilate a plurality of rooms, and a plurality of ventilation fan main body provided so as to open and close a ventilation path of the ventilation fan main body. An electric shutter, a stepping motor for opening and closing the shutter, which is provided in the electric shutter,
A limit switch that confirms that the shutter has opened,
Specified step rotation means for rotating the stepping motor forward and backward by a prescribed number of steps, abnormality detection means for determining the operating state of the limit switch when the electric shutter moves in the opening direction, and abnormality detection means When the determination is made, the control is provided with the abnormality display means for blinking the LED, and the electric shutter continuation means for continuing the operation of the stepping motor for the specified number of steps even when the abnormality detection means determines that the abnormality has occurred. A circuit for controlling the plurality of electric shutters and the main body of the ventilation fan by the control circuit, and performing the abnormality detection.
Even when the output means determines that there is an abnormality, the electric shutter
Continuing to keep the electric shutter open and closed
As a result, one of the plurality of electric shutters can be driven.
If the electric shutter opens, the abnormality detection means determines whether the limit switch is pushed or not, and the electric shutter is pushed. If not, the abnormality display means has the function of blinking the LED.

Embodiments of the present invention will be described below with reference to FIGS. (Embodiment 1) As shown in FIG. 1, a shutter 3 provided to open and close a ventilation passage 2 of a ventilation fan body 1 formed to ventilate a plurality of rooms is a stepping motor 4 for opening and closing a shutter and a shutter. An electric shutter 6 is formed by the limit switch 5 which confirms that the switch 3 is opened.

[0012] The stepping motor 4 is rotated forward and backward by a predetermined number of steps in the opening direction and the closing direction, and the limit switch 5 is operated when the electric shutter 6 is moved in the opening direction. The control circuit 11 is provided with various means including an abnormality detecting means 8 for determining whether the button has been pressed or not, and an abnormality display means 10 for blinking the LED 9 when the abnormality detecting means 8 determines that the abnormality has occurred. The control circuit 11 controls the electric shutter 6 and the ventilation fan main body 1.

In the above structure, the operation will be described. The control circuit 11 controls the drive of the ventilation fan main body 1, and further defines the stepping motor 4 in the electric shutter 6 by the specified step rotation means 7 in the opening direction and the closing direction. When the limit switch 5 is rotated by only one step and is rotated in the opening direction, the abnormality detecting means 8 detects whether the limit switch 5 is pushed or not, and if the stepping motor 4 has an abnormality, the abnormality detecting means 8 moves in the opening direction until the limit switch 5 is pushed. If it does not rotate, it is determined that there is an abnormality, and the abnormality display means 10
Flash ED9.

As described above, according to the ventilation fan with the electric shutter of the first embodiment of the present invention, when the electric shutter 6 has an abnormality, the abnormality detecting means 8 determines that the abnormality is present and the abnormality displaying means 1 is displayed.
0 blinks the LED 9 to inform the user of the abnormality, so that when the inspection is performed, the abnormality of the electric shutter can be determined at a glance.

(Embodiment 2) As shown in FIGS. 2 and 3, even when the electric shutter 6 or the limit switch 5 becomes abnormal, the control circuit 11A outputs a prescribed step to control the electric shutter 6. An electric shutter continuation unit 12 that continues is provided.

In the above structure, the operation will be described. When the abnormality detecting means 8 in the control circuit 11A determines that the abnormality has occurred, the electric shutter continuation means 12 rotates the stepping motor 4 by a prescribed number of steps to open and close the shutter 3. Try to continue.

As described above, according to the electric fan with the electric shutter of the second embodiment of the present invention, the electric shutter continuation means 12 continues to send the specified number of steps to the stepping motor 4 even when the abnormality detection means 8 determines that the abnormality occurs. When there are a plurality of electric shutters 6, it can be judged that the electric shutter 6 that is not driven is abnormal, and when the shutter 3 is judged to be abnormal even though it is rotated to the open state. It can be determined that the limit switch 5 is abnormal.

(Embodiment 3) As shown in FIGS. 4 and 5, an abnormality detection storage means 13 for storing abnormality detection is provided in the control circuit 11B, and abnormality detection is counted a plurality of times. The output stop means 14 for stopping the output of the main body 1 is provided and configured.

In the above structure, the operation will be described. Even when the abnormality detection storage means 13 stores the abnormality when the abnormality detection means 8 in the control circuit 11B determines that the abnormality is detected, and then the input for driving the electric shutter 6 is performed. When the abnormality detection storage means 13 continues to determine that the abnormality has occurred and the abnormality detection storage means 13 continuously counts up to a predetermined number of times, the abnormality display means 10 blinks the LED 9 and the output stop means 14 stops the output of the ventilation fan main body 1.

As described above, according to the ventilation fan with the electric shutter of the third embodiment of the present invention, the output stopping means 14 stops the output of the ventilation fan main body 1 when the abnormality of the electric shutter 6 occurs continuously for a predetermined number of times. Therefore, the user notices the abnormality because the ventilating fan main body 1 does not operate, and when checking again, L
Since the ED 9 is blinking, it can be determined that the electric shutter 6 is abnormal.

[0021]

As is apparent from the above embodiments, according to the present invention, when the electric shutter has an abnormality, the abnormality detecting means determines that the abnormality is abnormal and the abnormality display means blinks the LED , and the electric shutter is operated. Becomes abnormal and becomes an abnormality detection means
Even when it is judged to be more abnormal, the shutter opening / closing switch
Power the stepping motor to continue the specified number of steps.
Since a dynamic shutter continuation unit is provided, a plurality of electric shutters can be
It is possible to provide a ventilation fan with an electric shutter that can identify an abnormality in a computer and determine an abnormality.

Further, when the electric shutter becomes abnormal and the abnormality detecting means determines that it is abnormal, the abnormality detecting means stores the abnormality.
If a failure occurs for a specified number of times in succession, the error is displayed.
At the same time, the output of the ventilation fan is stopped by the output stop means.
As a result, it is possible to provide the ventilation fan with the electric shutter, which can promptly inform the user of the abnormality .

[0023]

[Brief description of drawings]

FIG. 1A is a perspective view showing a schematic configuration of a ventilation fan with an electric shutter according to a first embodiment of the present invention. FIG. 1B is a block diagram showing a circuit configuration of the ventilation fan with an electric shutter.

FIG. 2 is a perspective view showing a schematic configuration of a ventilation fan with an electric shutter according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a circuit configuration of the ventilation fan with the electric shutter.

FIG. 4 is a perspective view showing a schematic configuration of a ventilation fan with an electric shutter according to a third embodiment of the present invention.

FIG. 5 is a block diagram showing a circuit configuration of the ventilation fan with the electric shutter.

FIG. 6 is a perspective view showing a schematic configuration of a conventional electric fan with an electric shutter.

[Explanation of symbols]

1 Ventilation fan body 2 ventilation passage 3 shutters 4 stepping motor 5 limit switch 6 electric shutter 7 Specified step rotation means 8 Abnormality detection means 9 LED 10 Abnormality display means 11 Control circuit 11A control circuit 11B control circuit 12 Electric shutter continuation means 13 Abnormality detection storage means 14 Output stop means

Claims (2)

(57) [Claims] 1. A ventilation fan main body formed to ventilate a plurality of rooms, a plurality of electric shutters provided to open and close a ventilation passage of the ventilation fan main body, and a shutter opening / closing provided to the electric shutter. A stepping motor, a limit switch for confirming that the electric shutter is opened, a prescribed step rotation means for rotating the stepping motor forward and backward by a prescribed number of steps, and when the electric shutter moves in the opening direction, The abnormality detection means for determining the operating state of the limit switch, the abnormality display means for blinking an LED when the abnormality detection means determines an abnormality, and the stepping motor even when the abnormality detection means determines an abnormality A control circuit provided with each unit consisting of an electric shutter continuation unit for continuing the operation for the number of steps. And a plurality of electric shutters and the ventilation fan main body are controlled by the control circuit, and the abnormality is determined by the abnormality detecting means.
Even when the electric shutter continuation means is used,
By continuously opening and shutting off the
Of the shutters, the electric shutter that is not driven is abnormal.
A ventilation fan with an electric shutter that is configured to determine that . 2. An abnormality detection storage means for storing abnormality detection in a control circuit, and an output stop for stopping output to the ventilation fan main body when the number of times of abnormality detection stored in the abnormality detection storage means reaches a prescribed number consecutively. A ventilation fan with an electric shutter according to claim 1, further comprising: