JPH0694274A - Controller for operation of ventilating fan for bathroom - Google Patents

Abstract

PURPOSE:To prevent a person taking a bath from feeling coldness due to ventilating operation and achieve it without employing any human sensor. CONSTITUTION:A control circuit 11 determines a motor 3 to be operated in a weak operation mode when the detected humidity by a humidity sensor 7 is higher than a reference value of humidity and a change of humidity, once lowering then increasing, is detected by a change detecting circuit 12, then, swiches the mode of the motor 3 from the weak operation mode into strong operation mode, stronger than the weak operation mode, after a given period of time has elapsed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an operation control device for a bathroom ventilation fan.

[0002]

2. Description of the Related Art Conventionally, in a ventilation fan for a bathroom, humidity is automatically detected using a humidity sensor, and when the humidity exceeds a certain reference value, the ventilation operation is started, and when the humidity is below the reference value, the ventilation operation is performed. It is well known to start the.

[0003]

However, when a person is taking a bath, it may feel cold when ventilation operation is performed. Especially in winter. In this case, the bather turns off the power switch of the ventilation fan, but there is a problem that the usability is extremely poor. Also in this case,
Sometimes I forget to turn on the power switch.

As a countermeasure, it is conceivable to use a human sensor and control the ventilation operation by the detection result of the human sensor and the detection result of the humidity sensor. However, in this case, a human sensor is required, which causes an increase in cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to perform control so that a person does not feel cold during ventilation operation, and this can be automatically performed. , It is to provide an operation control device for a bathroom ventilation fan that can be achieved without using a human sensor.

[0006]

An operation control device for a bathroom ventilation fan according to the present invention compares a fan driving motor, a humidity sensor for detecting humidity, and a humidity detected by this humidity sensor with a humidity reference value. A comparing unit, a change detecting unit for detecting a change in which the humidity decreases and increasing, and a humidity detected by the sensor is equal to or higher than a humidity reference value and the change detecting unit detects the change, the Set the operation mode to the predetermined operation mode, and after a certain period of time,
The present invention is characterized by including a control means for controlling the operation mode of the motor so as to be stronger than the predetermined operation mode (the invention of claim 1).

According to another aspect of the invention, there is provided an operation control device for a ventilation fan for a bathroom, a fan driving motor, a humidity sensor for detecting humidity, a temperature sensor for detecting temperature, and an ambient temperature based on the temperature detected by the temperature sensor. Determining means, a comparing means for comparing the humidity detected by the humidity sensor and a humidity reference value, a change detecting means for detecting a change in which humidity has decreased and increased, and when the ambient temperature is low, the humidity When the humidity detected by the sensor is equal to or higher than the humidity reference value and the change is detected by the change detecting means, the operation mode of the motor is set to the predetermined operation mode, and after a certain time elapses, the operation mode of the motor is changed from the predetermined operation mode. Control means for controlling the motor with different control patterns when the ambient temperature is high. Having symptoms (the invention of claim 2).

[0008]

In the bathroom, it is necessary to ventilate when the humidity exceeds the standard value, but it feels cold when the ventilation operation is performed when there are people. On the other hand, when people move in and out, the humidity in the bathroom decreases and rises.
If this change is detected by the humidity sensor, it is possible to detect a person without using a person sensor.

However, in the first aspect of the invention, since the change detecting means for detecting the change in which the humidity is decreased and increased is provided, it is possible to detect the person by using the humidity sensor.
Then, when the humidity detected by the humidity sensor is equal to or higher than the humidity reference value and the change is detected by the change detecting means, that is, when the humidity is originally high and ventilation operation should be performed, but there is a person. In addition, since the operation mode of the motor is set to the predetermined operation mode, it is possible to automatically operate so that a person does not feel cold, and after a certain period of time, the operation mode of the motor is made stronger than the predetermined operation mode. Since it is controlled as described above, it is possible to remove moisture efficiently in time when there is no person.

According to the second aspect of the present invention, since the temperature sensor for detecting the temperature and the judging means for judging the environmental temperature based on the temperature detected by the temperature sensor are provided,
It is possible to determine whether the environmental temperature is high or low. That is, it is possible to determine whether or not the environment temperature is such that a person feels cold when performing ventilation operation. And in the invention,
The so-called cold prevention control described above is performed when the environmental temperature is low, and when the environmental temperature is high, it is controlled by a different control pattern. In addition, it is possible to increase the degree of freedom of control without considering prevention of cold weather.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a ventilation fan mounted on a wall of a bathroom (not shown). A decorative frame 2 having a bell mouth 2a is attached to the front part of the main body 1, a motor 3 (see FIG. 1) is arranged inside the main body 1, and a fan 4 is connected to its rotary shaft. ing. Also, makeup frame 2
A ventilation window portion 5 is formed in the front corner portion, and a sensor chamber 6 is formed on the back side thereof.

In the sensor chamber 6, a humidity sensor 7 (see FIG. 1) for detecting the humidity in the bathroom is arranged and a temperature sensor 8 (see FIG. 1) is arranged.

In FIG. 1 showing the electrical configuration, the output of the humidity sensor 7 is applied to one input terminal of a comparison circuit 9 as a comparison means. A humidity reference value signal 10s from the reference value generation circuit 10 is applied to the other input terminal of the comparison circuit 9, and the comparison circuit 9 outputs the humidity detection signal 7s output from the humidity sensor 7 and the humidity detection signal 7s. The humidity detection signal 7 is compared with the humidity reference value signal 10s.
When s exceeds the humidity reference value signal 10s, the high humidity detection signal 9s is output and given to the control circuit 11 as the control means. The function of the control circuit 11 will be described later.

The humidity detection signal 7s output from the humidity sensor 7 is also applied to a humidity change detection circuit 13 which is a humidity change detecting means. This humidity change detection circuit 13 detects a change in which the humidity has decreased and increased based on the humidity detection signal 7s, and outputs a change detection signal 12s. The change detection signal 12s is supplied to the control circuit 11.

On the other hand, the temperature detection signal 8s which is the output of the temperature sensor 8 is given to the determination circuit 13 which is the determination means. The determination circuit 13 is for determining the environmental temperature to determine whether the current season is summer or winter. That is, as shown in FIG. 3, it is sequentially detected whether or not a state of a predetermined temperature, for example, 10 ° C. or lower, continues for T time, and when such an environmental temperature condition is detected, this is detected in winter. It is judged that there is, and it is 24 from this time each time.
For the time, the low environment temperature detection signal 13s is output. On the contrary, as shown in FIG. 4, when the temperature condition is not satisfied, the low environmental temperature detection signal 13s is not output.

The control circuit 11 has a timer function and controls the motor 3 as follows based on the high humidity detection signal 9s, the change detection signal 12s and the low environment temperature detection signal 13s.

(A) When the low environmental temperature detection signal 13s is given (in winter); (a-1) When the high humidity detection signal 9s is input, the timer function is reset. That is, the time count value at the present time is reset, 30 minutes are counted from this time point, the motor 3 is operated in the “weak” operation mode in this 30 minutes, and when this “30 minutes” is completed, the operation mode is set to “ 3) from this point while switching to the “strong” operation mode
The time is counted and the operation is stopped at the end of these 3 hours.

(A-2) When the change rate detection signal 12s is input, the timer function is reset on condition that the high humidity detection signal 9s is input. That is, the time count value at the present time is reset and 30
Minutes are counted, and in this 30 minutes, the motor 3 is operated in the "weak" operation mode, which is the predetermined operation mode,
When is expired, the operation is switched to the “strong” operation mode, which is stronger than the “weak” operation mode, and the operation is performed, and 3 hours are counted from this point, and the operation is stopped when the 3 hours are expired.

(B) When the low environmental temperature detection signal 13s is not given (summer season); (b-1) When the high humidity detection signal 9s is input, "3 hours 30 minutes" is counted from this point. , "3 hours 3
The motor 3 is operated in the "strong" operation mode for "0 minutes", and the operation is stopped when "3 hours and 30 minutes" expires. (B-2) Even if the change rate detection signal 12s is input, control based on this is not performed.

Now, FIG. 5 (a) shows an example of changes in humidity when the bathroom is used. Now, assuming that this temperature change appears in winter, the motor 3 is shown in FIG.
The drive is controlled as shown in.

That is, in this case, since it is winter,
The determination circuit 13 outputs the low environment temperature detection signal 13s and gives it to the control circuit 11. At time point α, the lid of the bathtub in the bathroom is opened and hot water supply to the bathtub is started. As a result, the humidity in the bathroom rises, and when it exceeds the reference value (time point A), the high humidity detection signal 9s is output from the comparison circuit 9 and given to the control circuit 11.

Then, the control circuit 11 resets the timer function, starts the time count of "30 minutes", and operates the motor 3 in the "weak" operation mode. When this "30 minutes" expires, the time count for "3 hours" is started and the operation mode is changed to the "strong" operation mode.

When a person enters the bathroom before this "3 hours" has expired, the humidity decreases and rises (time B). This change in humidity is detected by the humidity change detection circuit 12, and a change detection signal 12s is output from this humidity change detection circuit 12 and given to the control circuit 11. Then, the control circuit 11 resets the timer function on condition that the high humidity detection signal 9s is input. In this case, since the humidity exceeds the reference value and the high-humidity detection signal 9s is input to the control circuit 11, the control circuit 11 resets the count value at this time point to 30 from this time point. Minutes are counted, and the motor 3 is operated in the "weak" operation mode that is the predetermined operation mode in the 30 minutes, and when the "30 minutes" is completed, 3 hours are counted from this point, and in this 3 hours, the " Drive in "strong" driving mode, which is stronger than "weak" driving mode.

When the bather leaves the bathroom at time point Ba, the bathtub lid is closed, so the humidity in the bathroom decreases. Then, when a person enters the bathroom (time C) again, the humidity rises because the lid is opened. When the humidity exceeds the reference value due to this rise (time point D), the high humidity detection signal 9s is output from the comparison circuit 9 and given to the control circuit 11.

Then, the control circuit 11 starts the time count of "30 minutes" and operates the motor 3 in the "weak" operation mode. Before this "30 minutes" expires, if a bather comes out (time Da) and another bather enters instead (time E), the humidity decreases and increases, causing a change. The timer function is reset by the detection signal 12s, "30 minutes" is counted again from this point, and the motor 3 is operated in the "weak" operation mode at the "30 minutes".

When "30 minutes" elapses from the time point E, "3 hours" is counted and the operation of the motor 3 is changed from "weak" operation mode to "strong" operation mode. After this, at time F, when a person enters the bathroom, the humidity rises. After that, when the humidity detection signal 7s exceeds the humidity reference value signal 10s (time point G), the high humidity detection signal 9s is output and input to the control circuit 11,
The control circuit 11 resets the count value at this point and counts 30 minutes from this point,
Run the motor 3 in "weak" operation mode for
When "0 minutes" has expired, "3 hours" are counted from this point, and at "3 hours", operation is performed in a "strong" operation mode that is stronger than the "weak" operation mode. This "3 hours"
When is completed, the operation of the motor 3 is stopped.

FIG. 5 (c) shows an example of drive control for the motor 3 when the humidity change shown in FIG. 5 (a) appears in summer. In this case, the control circuit 1
1 controls the motor 3 with a control pattern different from that in winter. That is, when the humidity detection signal 7s exceeds the humidity reference value signal 10s (time point A described above), "3 hours 30
Time counting is started for "minutes", and the motor 3 is operated "strongly". Then, even if the change detection signal 12s is input (at the time point B), the timer function is not reset and the time counting continues. The timer function is reset only when the humidity detection signal 7s exceeds the humidity reference value signal 10s (time points D and G), and when "3 hours and 30 minutes" have elapsed from the time point G, the operation of the motor 3 is started. To stop.

According to the present embodiment as described above, since the change detecting circuit 12 for detecting the change in which the humidity decreases and increases is provided, the humidity sensor 7 can be used to detect a person. The humidity detected by the humidity sensor 7 (humidity detection signal 7
s) is greater than or equal to the humidity reference value (humidity reference value signal 10 s) and the change is detected by the change detection circuit 12 (when the change detection signal 12 s is output), that is, originally the humidity is When there is a person who should perform ventilation operation at a high temperature, the operation mode of the motor 3 is set to a "weak" operation mode which is a predetermined operation mode, so that the person automatically operates so as not to feel cold. Moreover, since the operation mode of the motor 3 is controlled so as to be strengthened from the "weak" operation mode to the "strong" operation mode after a lapse of a certain period of time, it is possible to efficiently perform humidity ventilation when there is no person. Can be performed.

Further, according to the present embodiment, the so-called cold prevention control described above is performed when the environmental temperature is low, and is controlled by another control pattern when the environmental temperature is high, so only when the environmental temperature is low. The cold prevention control can be executed, and when the environmental temperature is high, the control according to the humidity can be performed without considering the cold prevention.

In the above embodiment, when the humidity detected by the humidity sensor 7 is equal to or higher than the humidity reference value in winter and the change detection circuit 12 detects a decrease / increase change in humidity (time B, E), Although the operation mode of the motor 3 is set to the “weak” operation mode as the predetermined mode and then changed to the “strong” operation mode, the predetermined mode may be “stop operation” and then the “weak” operation mode. Alternatively, the mode may be changed to the “strong” operation mode.

[0031]

As is apparent from the above description, the present invention can obtain the following effects.

In the operation control device for the bathroom ventilation fan according to the first aspect of the present invention, the ventilation operation can be controlled so that a person does not feel cold, and this can be automatically performed. An effect that can be achieved without using a human sensor can be obtained.

In the operation control device for the bathroom ventilation fan according to the second aspect, the cold prevention control can be executed only when the environmental temperature is low, and when the environmental temperature is high, the degree of freedom of control can be controlled without considering the cold prevention. It has an excellent effect that it is possible to increase.

[Brief description of drawings]

FIG. 1 is a block diagram of an electrical configuration showing an embodiment of the present invention.

FIG. 2 is a perspective view of a ventilation fan.

FIG. 3 is a diagram showing an example of temperature change in winter.

FIG. 4 is a diagram showing an example of temperature change in summer.

FIG. 5 is a diagram showing changes in humidity in the bathroom and motor drive control conditions in winter and summer.

[Explanation of symbols]

3 is a motor, 4 is a fan, 7 is a humidity sensor, 8 is a temperature sensor, 9 is a comparison circuit (comparison means), 11 is a control circuit (control means), 12 is a humidity change detection circuit (humidity change detection means), 13 Indicates a determination circuit (determination means).

Claims (2)

[Claims] 1. A motor for driving a fan, a humidity sensor for detecting humidity, a comparison means for comparing the humidity detected by the humidity sensor with a humidity reference value, and a change for detecting a change caused by a decrease in humidity. When the humidity detected by the detecting means and the humidity sensor is a humidity reference value or more and the change is detected by the change detecting means, the operation mode of the motor is set to a predetermined operation mode, and after a certain time elapses, the An operation control device for a ventilation fan for a bathroom, comprising: a control means for controlling the operation mode of the motor to be stronger than the predetermined operation mode. 2. A fan driving motor, a humidity sensor for detecting humidity, a temperature sensor for detecting temperature, a judgment means for judging the environmental temperature based on the temperature detected by the temperature sensor, and the humidity sensor. Comparing means for comparing the detected humidity and the humidity reference value, change detecting means for detecting a change in which the humidity decreases and increases, and when the environmental temperature is low, the humidity detected by the humidity sensor is not less than the humidity reference value and When the change is detected by the change detecting means, the operation mode of the motor is set to a predetermined operation mode, and the operation mode of the motor is controlled to be stronger than the predetermined operation mode after a certain time has passed, and the environmental temperature is When it is high, a controller for controlling the motor with different control patterns is provided, and an operation control device for a ventilation fan for a bathroom.