JPH0526487A - Device for automatically operating ventilating fan of simultaneous intake-exhaust type - Google Patents

Abstract

PURPOSE:To prevent air taken in from the outdoors from condensing indoors by controlling according to the temperatures and humidity indoors and outdoors. CONSTITUTION:There are provided an outdoor temperature-sensing element 4 and an outdoor humidity-sensing element 5 both on the outdoor side 3 and an indoor temperature-sensing element 7 on the indoor side 6. Furthermore there are provided a means 9 for calculating the absolute humidity on the outdoor side, which calculates the absolute humidity of the outdoor air from signals from the outdoor temperature- sensing element 4 and outdoor humidity-sensing element 5, and a means 10 for judging the possibility of dew condensation, which judges whether or not the intake of outdoor air causes dew condensation indoors on the basis of signals from the means 9 for calculating the absolute humidity on the outdoor side and the indoor temperature- sensing element 7. A drive circuit is provided which controls the operation of a set of ventilating fans 2 of the simultaneous intake-exhaust type on the basis of a signal from the means 10 for judging the possibility of dew condensation so that, when the temperature and humidity of the outdoor air to be taken in and the indoor temperature indicate likelihood of dew condensation, the ventilating fans of the simultaneous intake- exhaust type are automatically stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic operation device for automatically operating a simultaneous supply / discharge type ventilation fan.

[0002]

2. Description of the Related Art In recent years, housing has become highly airtight, and simultaneous supply / exhaust type ventilation fans are becoming widespread in order to prevent negative pressure in the room due to indoor ventilation, etc.
There is an increasing demand for an automatic operation device having high energy efficiency such as automatic operation corresponding to indoor humidity.

From the above, in order to prevent an increase in indoor humidity, a conventional automatic operation device for a simultaneous supply / exhaust type ventilation fan, as shown in FIG. 3, has a humidity provided on the indoor side during automatic operation. When the sensing signal of the sensing element exceeds a predetermined value, the simultaneous supply / exhaust type ventilation fan is operated for a certain time and then stopped. Further, in the case of manual operation, the simultaneous supply / exhaust type ventilation fan is configured to be stopped by setting the operation switch to “off”.

[0004]

In such a conventional automatic supply / exhaust type ventilation fan automatic operation device, if the indoor humidity is equal to or higher than a set value, the operation is performed regardless of the temperature and humidity of the outside air to be supplied, so that the air conditioner is cooled in the summer. When the outside air with high humidity is continuously supplied to the inside of the room, there is a problem that dew condensation occurs due to the sliding doors or shoji that are cooled by the indoor cooling.

SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and an object thereof is to provide an automatic operation device for a simultaneous supply / exhaust type ventilation fan capable of preventing dew condensation due to sliding doors or sliding doors in a room cooled in summer. There is.

[0006]

In order to achieve the above object, the present invention provides an indoor temperature sensing element for sensing the temperature of indoor air, an outdoor temperature sensing element for sensing the temperature of outdoor air, and
An outdoor humidity sensing element for sensing the humidity of the outdoor air, and an outdoor absolute humidity calculating means for calculating the absolute humidity of the outdoor air by the sensing signal of the outdoor humidity sensing element and the sensing signal of the outdoor temperature sensing element. , By the detection signal of the outdoor absolute humidity calculating means and the detection signal of the indoor temperature sensing element,
Simultaneous supply / exhaust type ventilation fan provided with a dew condensation judging means for judging whether or not the outside air is condensed by supplying the outside air to the room, and a drive circuit for operating the simultaneous supply / exhaust type ventilation fan based on the judgment signal of this dew condensation judging means. This is the configuration of the automatic driving device.

[0007]

According to the present invention, the outdoor temperature and humidity are measured by the outdoor temperature sensing element and the outdoor humidity sensing element, and the outdoor absolute humidity calculating means determines the absolute humidity of the outdoor air from the measured values. When the dew condensation judging means judges that there is no dew condensation even if the outside air is supplied to the room, the drive that receives this judgment signal is calculated from the calculated value and the value obtained by measuring the room temperature with the indoor temperature sensing element. The circuit operates a simultaneous supply and discharge type ventilation fan. Further, when it is determined that dew condensation occurs when the outside air is supplied into the room, the drive circuit receiving this determination signal stops the simultaneous supply / discharge type ventilation fan.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the outdoor temperature sensing element 4 is provided on the outdoor 3 side of the simultaneous supply / exhaust type ventilation fan 2 installed on the outdoor wall 1.
And an outdoor humidity sensing element 5 are provided. An indoor temperature sensing element 7 is provided on the indoor 6 side of the simultaneous supply / exhaust type ventilation fan 2. Then, the sensing signal of the outdoor temperature sensing element 4 and the sensing signal of the outdoor humidity sensing element 5 are input to the outdoor absolute humidity calculating means 9. The outdoor absolute humidity calculating means 9 calculates the outdoor absolute humidity from the sensing signal of the outdoor temperature sensing element 4 and the sensing signal of the outdoor humidity sensing element 5, and outputs the calculated signal to the dew condensation determining means 10. There is.
Further, the dew condensation judging means 10 for inputting the sensing signal of the indoor temperature sensing element 7 and the sensing signal of the outdoor absolute humidity calculating means 9.
Then, the operation / stop of the simultaneous supply / discharge type ventilation fan 2 is determined, and the simultaneous supply / discharge type ventilation fan 2 is operated / stopped through the drive circuit 11. The outdoor absolute humidity calculating means 9 and the condensation determining means 10 are realized by the microcomputer 6.

The operation of the automatic operation device for the simultaneous supply / exhaust type ventilation fan having the above-mentioned structure will be described with reference to FIGS. 1 and 2.

First, in step 21, the outdoor temperature "RT _out " is input to the microcomputer 8, and in step 22
Then, the outdoor humidity "RH _out " is input to the microcomputer 8. Next, in step 23, "RT _out " and "R
"H _out "
From the data of the moist air diagram showing the relationship between the temperature, humidity, and absolute humidity stored in the table, the outdoor absolute humidity "H
_out "is calculated. Next, in step 24, the indoor temperature "RT _in " is input to the microcomputer 8, and in step 25, "H _out " and "RT _in " are entered, and the absolute humidity and dew condensation previously stored in the microcomputer 8 are stored. From the data of the moist air diagram showing the relationship with temperature, it is determined whether or not dew condensation will occur if the outside air is supplied to the room. Next, when it is determined in step 25 that dew condensation does not occur, the process proceeds to step 26, the simultaneous supply / discharge type ventilation fan 2 is operated through the drive circuit 11, and the process returns to step 21. Also, step 2
When it is determined that dew condensation occurs in 5, the process proceeds to step 27, the simultaneous supply / discharge type ventilation fan 2 is stopped through the drive circuit 11, and the process returns to step 21.

As described above, according to the automatic operating device for the simultaneous supply / exhaust type ventilation fan of the embodiment of the present invention, the absolute humidity of the outside air supplied to the room cooled in the summer is low, and the indoor air is supplied. If condensation does not occur, operate the simultaneous supply / discharge type ventilation fan. Also,
When the absolute humidity of the outside air is high and dew condensation occurs, the simultaneous supply / discharge type ventilation fan can be stopped.

[0013]

As is apparent from the above embodiments, according to the present invention, the simultaneous supply / exhaust type ventilation fan of the simultaneous supply / exhaust type ventilation fan can be obtained according to the absolute humidity of the outside air supplied to the room cooled in the summer and the room temperature. Since it can be automatically started / stopped, it is possible to provide an automatic operation device for a simultaneous supply / exhaust type ventilation fan capable of preventing condensation of outside air due to indoor fusuma or shoji.

[Brief description of drawings]

FIG. 1 is a block diagram of an automatic operation device for a simultaneous supply / discharge type ventilation fan according to an embodiment of the present invention.

[Figure 2] Flow chart of the program

FIG. 3 is a block diagram of a conventional automatic operation device for a simultaneous supply / discharge type ventilation fan.

[Explanation of symbols]

 2 Simultaneous supply / discharge type ventilation fan 4 Outdoor temperature sensing element 5 Outdoor humidity sensing element 7 Indoor temperature sensing element 9 Outdoor absolute humidity calculation means 10 Dew condensation determination means 11 Drive circuit

Claims (1)

Claims: 1. An indoor temperature sensing element for sensing the temperature of indoor air, an outdoor temperature sensing element for sensing the temperature of outdoor air, and an outdoor humidity sensor for sensing the humidity of outdoor air. An element, an outdoor absolute humidity calculating means for calculating the absolute humidity of the outside air by a detection signal of the outdoor humidity detecting element and a detection signal of the outdoor temperature detecting element, and a calculation signal of the outdoor absolute humidity calculating means And the sensing signal of the indoor temperature sensing element, the dew condensation determining means for determining whether or not the outside air will be condensed when the outside air is supplied to the room, and the simultaneous supply / discharge type ventilation fan based on the determination signal of the condensation determining means. An automatic operation device of a simultaneous supply and discharge type ventilation fan equipped with a drive circuit to operate.