JPH0810070B2 - Ventilation equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a ventilation device installed in a room provided with an air supply port.

2. Description of the Related Art Conventionally, this type of ventilator has a structure as shown in FIGS. That is, it is mounted on the wall surface of the house 100 or the like, is connected to the power source 104 via the switch 102, and the air supply port 103 is provided on the opposite wall surface to enhance the ventilation effect.

And, when ventilation is required, the operation is performed by operating the switch 102 each time.

Problems to be Solved by the Invention With such a conventional configuration, there is no problem in terms of ventilation efficiency, but since the outdoor air is introduced by providing an air supply port, it feels cold indoors especially in winter and The person had no choice but to turn off the ventilation fan.

The present invention solves such a problem, and an object of the present invention is to provide a ventilator capable of achieving ventilation without feeling cold in the room due to the supplied air.

Means for Solving the Problem In order to solve this problem, the present invention provides a ventilation fan for indoor ventilation, a temperature detector provided on the indoor side near an air supply port for assisting the amount of air supplied to the room, and The room temperature decrease measuring means for measuring the room temperature decrease due to the supply air by the detection signal of the temperature detector, the ventilation quantity judging means for judging the ventilation quantity of the ventilation fan by the measurement signal of the room temperature decreasing measurement means, and the ventilation quantity judging means Ventilation time determining means that determines the ventilation time so that the total ventilation volume is set based on the determined ventilation volume, and the applied voltage to the ventilation fan and the operating time are determined by the signals from the ventilation volume determination means and the ventilation time determination means. The ventilation device is composed of a ventilation fan drive means for controlling.

Operation With this configuration, when the ventilation fan is operated, the change in room temperature due to the air supplied to the room from the air supply port is measured by the room temperature decrease measuring means based on the detection signal of the temperature detector, and based on this measurement value, The ventilation volume determination means determines that the ventilation volume of the ventilation fan becomes smaller as the degree of descending becomes larger, or the ventilation volume becomes larger as the degree of descending becomes smaller, and based on this determined ventilation volume, the total ventilation volume set in advance. Therefore, the ventilation time determining means determines the ventilation time, and the ventilation fan driving means controls the ventilation amount and the ventilation time.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In FIG. 1, the ventilation fan 3 attached to the wall surface 2 of the house 1 exhausts dirty air in the room, and the air supply port 4 provided on another wall surface introduces fresh air into the room. ing. A temperature detector 5 is provided near the air supply port 4 on the indoor side, detects the temperature inside the room, converts the temperature into an electric signal, and inputs the electric signal to the control unit 6 installed on the wall surface 2. The controller 6 measures, based on the detection signal of the temperature detector 5, the room temperature decrease measuring means 7 for measuring the change in the room temperature due to the air supplied to the room from the air supply port 4, and the ventilation amount based on the measured temperature decrease value. Ventilation rate determining means 8 for determining the ventilation rate, the ventilation time determining means 9 for determining the ventilation time based on the determined ventilation rate so that the total ventilation rate is set in advance, and the ventilation determined as described above. The ventilation fan drive means (10) for operating the ventilation fan according to the amount and the ventilation time. A start button 11 for starting the operation of the ventilation fan 3 and a stop button 12 for forcibly stopping the ventilation fan 3 are provided on the front surface of the controller 6.

Next, the principle of processing the signal detected by the temperature detector 5 will be described with reference to FIGS.

When the operation of the ventilation fan 3 is started, the temperature detector 5 turns on the air supply port 4
The detection of the state of the air introduced into the room is started as the room temperature.

Then, based on the detection signal of the temperature detector 5, the room temperature decrease measuring means 7 measures the room temperature decrease value during the time t _O after the start of the operation of the ventilation fan 3, and determines the ventilation volume and the ventilation time according to the degree of the room temperature decrease. I will decide, but the room temperature drop value,
In response to T ₁ , T ₂ , T ₃ , T ₄ (T ₁ <T ₂ <T ₃ <T ₄ ), the ventilation rate determination means 8 measures the ventilation rates QT ₁ , QT ₂ , QT ₃ , QT ₄ (QT ₁ <QT ₂ <QT ₃
<QT ₄ ) and the ventilation time determining means 9 determines the ventilation times t ₁ , t ₂ , t ₃ , t ₄ based on this ventilation volume so that the product of the ventilation volume and the ventilation time is always constant ( QT ₁ × t ₁ ＝ QT ₂ × t ₂ ＝
QT ₃ × t ₃ = QT ₄ × t ₄ ), that is, the ventilation time is determined according to a preset total ventilation volume constant curve.

Next, an embodiment of the circuit of the main part of the controller 6 will be described with reference to FIG.

The controller 6 comprises a microcomputer 14 and a peripheral circuit section. The microcomputer 14 is CP
It is a general one-chip microcomputer that has U, ROM, RAM, and an input / output unit.

The temperature detector 5 is connected to the input section of the microcomputer 14 via the resistor 15 and the A / D converter 16. As a result, the temperature signal from the temperature detector 5 is converted into a binary code and read by the microcomputer 14. In addition, the start button 11 of the ventilation fan 3 provided on the front surface of the controller 6,
Also, it is connected to the input part of the microcomputer 14 via resistors 17 and 18 so that it can be determined whether or not the stop button 12 for stopping has been pressed and operated.

On the other hand, a series circuit of the ventilation fan 3 and the triac 20 is connected to the AC power supply 19. Triac 20 has a resistance of 21,2
One end of the series circuit of 2 is the T pole, and one end of the capacitor 23 is T ₁
The phase control circuit is configured by connecting the poles and the other ends of the respective poles via the diac 24 to the G poles.

The output resistance section 25 of the photocoupler 25 is connected in parallel with the resistance 21.
By connecting b and changing the current flowing in the input diode section 25a of the fat coupler 25, the resistance value of this output resistance section (hereinafter referred to as the output resistance value) is changed. In order to change the current flowing in the input diode section 25a, the input diode section 25a is connected to the microcomputer 1.
The collectors of the transistors 26, 27, 28, 29 connected to the output part of 4 are connected via resistors 30, 31, 32, 33 having different resistance values. Then, when a control signal is sent from the microcomputer 14 to turn on any of the transistors 26, 27, 28, 29, a current flows through the input diode section 25a through the resistor connected thereto, and this current flows through the resistor 30, 31,32,
It depends on which of the 33 flows. When the current flowing through the input diode section 25a is increased, the resistance value of the output section is decreased. Therefore, the current to the capacitor 23 of the phase control circuit is adjusted to increase the voltage applied to the ventilation fan 3 and, conversely, to the input diode section 25a. When the flowing current is made small, the output resistance value becomes large, the voltage applied to the ventilation fan 3 becomes low, and the ventilation volume can be adjusted.

Then, the ventilation time is adjusted by the microcomputer 14
During the ventilation time determined by
This is achieved by continuing the operation of sending the control signal to 28 and 29 and then stopping the control signal.

As described above, according to the embodiment, when the room temperature drop due to the supply of air is large during ventilation, the ventilation volume per hour is reduced, the ventilation time is lengthened to prevent the user from feeling cold in the room, and If the descent is small, increase the ventilation volume so that you do not feel cold, and shorten the ventilation time accordingly.
By keeping the total ventilation constant, the ventilation function can be maintained and the ventilation operation can be controlled so as not to cause discomfort in the room.

EFFECTS OF THE INVENTION As is clear from the above description of the embodiments, according to the present invention, the total ventilation is kept constant, and the ventilation and the ventilation time are adjusted according to the degree of decrease in room temperature due to air supply. By mitigating the effect of air temperature, the ventilation function can be maintained even in winter, and ventilation control can be performed without feeling cold in the room.

[Brief description of drawings]

FIG. 1 is a block diagram showing a ventilator according to an embodiment of the present invention, FIGS. 2 and 3 are explanatory views of the principle of ventilation volume determination and ventilation time determination of the ventilator, and FIG. FIG. 5 is an electric circuit diagram of a main part, FIG. 5 is a configuration diagram of a conventional ventilation device, and FIG. 6 is the same electric circuit diagram. 3 ... Ventilation fan, 4 ... Air inlet, 5 ... Temperature detector, 7 ...
... Room temperature drop measuring means, 8 ... Ventilation amount judging means, 9 ... Ventilation time determining means, 10 ... Ventilation fan driving means.

Claims (1)

[Claims] 1. A ventilation fan for indoor ventilation, and a temperature detector provided on the indoor side near the air supply port for assisting the amount of air supplied to the room.
Room temperature decrease measuring means for measuring the room temperature decrease due to the supply air by the detection signal of the temperature detector, ventilation quantity judging means for judging the ventilation quantity of the ventilation fan by the measurement signal of the room temperature decreasing measurement means, and this ventilation quantity judging means Ventilation time determining means for determining the ventilation time so as to obtain a preset total ventilation volume based on the ventilation volume determined by, and the voltage applied to the ventilation fan and the operating time by the signals from the ventilation volume determining means and the ventilation time determining means. A ventilation device comprising a ventilation fan drive means for controlling the.