JPH0317453A - Automatic operation device for bath room ventilation fan - Google Patents

Abstract

PURPOSE:To provide an automatic operating device for a bath room ventilation fan having a high comfortable and convenient feature by a method wherein in summer season, if a dew formation is detected in a bath room, a ventilation fan is immediately operated and in winter season, even if the dew formation is detected, the operation is controlled in such a way as the ventilation fan is not operated unless a predetermined time required for taking a bath elapses. CONSTITUTION:In case that a summer or a winter sensor circuit 16 detects a summer mode, a dew formation sensor circuit 9 outputs a dew formation sensing signal, resulting in that a ventilation fan 7 is operated by the summer mode operation starting means 1 through a driving circuit 6. when a dew formation sensing signal of the dew formation sensor circuit 9 is stopped, the ventilation fan 7 is stopped by the summer mode operation stopping means 3 through the driving circuit 6. In case that the summer or winter sensor circuit 16 detects a winter mode, the dew formation sensor circuit 9 outputs a dew formation sensing signal, resulting in that after an elapsing of a general time of taking bath, the ventilation fan 7 is operated by a winter mode operation starting means 2 through the driving circuit 6. After driving operation, as a dew formation sensing signal of the dew formation sensing circuit 9 is stopped, the ventilation fan 7 is stopped by the winter mode operation stopping means 4 after a specified time elapses.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention uses a dew condensation detection element and a temperature detection element to detect the state of dew condensation in a bathroom and whether it is summer or winter, and operates a bathroom ventilation fan based on the detection output. The invention relates to an automatic driving device that controls a vehicle.

2. Description of the Related Art A conventional automatic driving device of this type had an electric circuit diagram as shown in FIG. 4, for example. When the power switch 61 is turned on as shown in the figure, the DC power supply circuit 62 turns on the control DC power supply and applies DC voltage to the microcomputer 53 and the condensation detection circuit 54. When a DC voltage is applied, the microcomputer 63 outputs an output signal to the drive section 66 to operate the ventilation fan 67 for a predetermined period of time regardless of the output state of the dew condensation sensor 66, which is a humidity detection element.

As shown in FIG. 6, the dew condensation sensor 66 has a characteristic that the resistance value is small in a region of low humidity, and the resistance value increases rapidly in a region of high humidity of 90% or more. The time is measured by the microcomputer 63 based on the signal from the power supply frequency human power circuit 68, and after a predetermined period of time has elapsed since the start of operation, the signal sent from the dew condensation sensor 56 through the dew condensation detection circuit 64 detects the condensation humidity. When the ventilation fan 67 is to be stopped by measuring the detection time when the ventilation fan 67 reaches , the ventilation fan 67 is stopped after operating for a predetermined period of time set in advance in accordance with this measured value. After that, when the dew condensation sensor 66 detects humidity that leads to dew condensation, it immediately operates the ventilation fan 6, measures the detection time, and after operating for a preset period of time corresponding to this measurement value, the ventilation fan 6 ends. The operation of stopping 67 was repeated. (For example, JP-A No. 6
2-1 941 39).

Problems to be Solved by the Invention With this conventional structure, when taking a bath, the condensation sensor 66 detects condensation and automatically starts automatic operation. It was uncomfortable to feel, and it was very troublesome as it was necessary to turn off the power switch 61 before entering the room and then turn it on again when leaving the room.

The present invention solves these problems, and is extremely comfortable and convenient because it eliminates the feeling of cord draft in the winter, eliminates the hassle of turning the power switch 61 on and off every time you take a bath. The purpose of the present invention is to provide an automatic operation device for a bathroom ventilation fan with high efficiency.

Means for Solving the Problems In order to solve this problem, the present invention provides a drive circuit that controls the operation of a ventilation fan according to the detection state of dew condensation of a dew condensation detection element whose conductive characteristics change in response to dew condensation, and a and a summer/winter detection circuit that detects an input of a temperature detection state of a temperature detection element whose conductive characteristics change in response to the summer/winter detection circuit. Summer mode operation start means for operating the ventilation fan; Summer mode operation stop means for stopping the ventilation fan after operation for a predetermined time corresponding to the dew condensation detection time of the dew condensation detection element when dew condensation detection stops; means for starting a ventilation fan after a certain period of time has elapsed since detection of dew condensation when a winter mode is detected from a winter detection circuit;
The automatic operation device for a bathroom ventilation fan is provided with a winter mode operation stop means for stopping the ventilation fan after a predetermined period of time has elapsed since detection of stoppage of condensation after the ventilation fan is operated.

With this structure, when the summer/winter detection circuit detects the summer mode and the condensation detection element detects condensation in the bathroom, the ventilation fan is immediately operated by the summer mode operation start means, and when the condensation detection stops after operation. , the ventilation fan is operated for a preset time corresponding to the dew condensation time detected by the dew condensation detection element until then by the summer mode operation stop means;
Then stop it. On the other hand, when the summer/winter detection circuit detects winter mode and the condensation detection element detects condensation in the bathroom, the winter mode operation start means operates the ventilation fan after a certain period of time has passed from the time when condensation is detected, and condensation occurs after operation. When the detection stops, the ventilation fan is stopped after a certain period of time by the winter mode operation stop means.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 to 3.

Incidentally, it is desirable to operate the ventilation fan 7 installed in the bathroom to prevent dew condensation during the summer when there is condensation in the bathroom. Therefore, in the embodiment, as schematically shown in FIG.
When the summer/winter detection circuit 16 detects the summer mode and the dew condensation detection circuit 9 outputs a dew condensation detection signal, the summer mode operation start means 1 immediately operates the ventilation fan 7 via the drive circuit 6, and the condensation detection circuit When the dew condensation detection signal 9 stops, the ventilation fan 7 is stopped by the summer mode operation stop means 3 via the drive circuit 6 after a certain period of operation, for example, 3 hours.

On the other hand, in winter, you want to ventilate the room after bathing to prevent condensation. Therefore, in a similar embodiment, when the summer/winter detection circuit 16 detects the winter mode and the dew condensation detection circuit 9 outputs a dew condensation detection signal, the winter mode is set after a preset predetermined time, that is, the general bathing time has elapsed. The ventilation fan 7 is operated via the drive circuit 6 by the operation start stage 2, and after the operation, when the condensation detection signal of the condensation detection circuit 9 stops, the winter mode operation stop means 4 operates after a certain period of time, for example, 3 hours. The ventilation fan 7 is stopped via the drive circuit 6.

Next, the electric circuit of the automatic driving device of this embodiment will be explained based on FIG. 2. In the figure, a dew condensation detection element 8 and a resistor R4 constitute a dew condensation detection circuit 9, and a dew condensation signal is input to a microcomputer 10. The drive circuit 6 includes a diode bridge DB, resistors R1, R2,
It is composed of R3, capacitor C1, button, and thyristor SCR. The DC power supply circuit 12 includes resistors R6, R
7, R8, diodes D2, D3, capacitors C3, C
4. Consisting of a constant voltage diode ZD, a transistor Q2, a surge absorber SA, and a power supply frequency input circuit 13 including resistors R9 and R1. , and a diode D4. The summer/winter detection circuit 16 includes a temperature detection element 16 and resistors R11 and R1. In the summer mode when the ambient temperature exceeds 26°C, the microcomputer 10 is in Hi state and the ambient temperature is 26°C.
When in winter mode below °C, microcomputer 1
The state of L0 is input to 0. Among them, 14 in the figure is a power switch.

Next, the operation of the automatic operation device for a bathroom ventilation fan having the above structure will be explained based on FIGS. 2 and 3.

When the power switch 14 is closed, AC power is applied to the circuit, and the DC power supply circuit 12 causes the microcomputer 10 to initially initialize the built-in RAM, input/output ports, etc. in step 31 shown in FIG. Make settings. Next, in step 32, it is determined whether the summer/winter detection circuit 16 is indicating summer or winter mode, and if it is indicating summer mode, in step 33, whether the dew condensation detection circuit 9 is outputting a dew condensation signal or not is determined. It is detected whether or not the air condensation occurs, and if a dew condensation signal is output, the ventilation fan 7 is operated via the drive circuit 6 in step 34. If the dew condensation detection circuit 9 does not output a dew condensation signal in step 33, the dew condensation detection circuit 9 in step 36
It is detected whether or not the dew condensation signal has stopped, and if it has stopped, a summer mode operation stop timer is set in step 36 at 11 when the ventilation fan 7 is operated. If the dew condensation signal continues to stop, it is determined in step 37 whether the summer mode operation stop timer has ended, and if the summer mode operation stop timer has ended, it is determined in step 38. The ventilation fan 7 is stopped via the drive circuit 6. When the summer/winter detection circuit 16 indicates the winter mode in step 32, it is detected in step 39 whether or not the dew condensation detection circuit 9 is outputting a dew condensation signal, and if it is outputting a dew condensation signal, The Nuteg 40 detects whether or not the dew condensation signal has started to be output, and if it has started outputting it, the winter mode operation start timer is set in step 41, but the ventilation fan 7 is activated by the drive circuit 6 in step 42.
has been stopped through. If it is determined in step 40 that the dew condensation signal continues to be output, it is determined in step 43 whether or not the winter mode operation start timer has expired. Operate ventilation fan 7. If the dew condensation detection circuit 9 is not outputting a dew condensation signal in step 39, it is detected in step 46 whether or not the dew condensation signal has stopped, and when the dew condensation signal has stopped, a winter mode operation stop timer is set in step 46. . If the dew condensation signal continues to stop in step 46, it is detected in step 47 whether or not the winter mode operation timer has ended, and if it has ended, the ventilation fan 7 is stopped through the drive circuit 6 in step 48. let

In the example, the summer/winter mode is determined based on the ambient temperature 2.
Although 6°C is used as a standard, it goes without saying that other settings can be made depending on the user's sense.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, in the summer, when condensation is detected in the bathroom, the ventilation fan is immediately operated, and in the winter, even if condensation is detected, the ventilation fan Prevent ventilation fans from operating until a predetermined period of time has elapsed.
Since these are automatically controlled, calls can be made in the winter.
Not only does it eliminate the unpleasant sensation of red draft smell, it also eliminates the trouble of turning the power switch on and off every time you take a bath, making it possible to provide extremely convenient automatic operation, which has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a structural diagram showing an automatic operation device for a bathroom ventilation fan according to an embodiment of the present invention, Fig. 2 is an electric circuit diagram thereof, Fig. 3 is a flowchart showing a program for automatic operation, and Fig. 4
The figure is an electric circuit diagram of a conventional automatic operation device for a bathroom ventilation fan.
FIG. 6 is a characteristic diagram of the dew condensation sensor of the automatic driving device. 1... Means for starting summer mode operation, 2...
Means for starting winter mode operation, 3... Means for stopping summer mode operation, 4... Means for stopping winter mode operation, 6...
... Drive circuit, 7 ... Ventilation fan, 8 ...
...Dew condensation detection element, 16...Temperature detection element, 1
6′”・・・Summer/winter detection circuit.

Claims (1)

[Claims] A drive circuit that controls the operation of the ventilation fan according to the condensation detection state of the dew condensation detection element whose conductive properties change in response to condensation, and an input of the temperature detection state of the temperature detection element whose conductive properties change in response to temperature. and a summer mode operation start means for operating the ventilation fan when condensation is detected when the summer mode is detected from the summer/winter detection circuit; summer mode operation stop means for stopping the ventilation fan after operation for a predetermined period of time corresponding to the dew condensation detection time of the dew condensation detection element; This automatic operation device for a ventilation fan for a bathroom is provided with a winter mode operation start means for operating the ventilation fan after a period of time has elapsed, and a winter mode operation stop means for stopping the ventilation fan after a predetermined period of time has elapsed since the detection of stoppage of condensation after the operation of the ventilation fan.