JP2000080735A - Underfloor dehumidifier and dehumidifying method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform an underfloor dehumidification efficiently and suitably to reduce electric power consumption. SOLUTION: A fan 2 for supplying outside air to an underfloor space of a house 5 from a side wall at south side is provided, a humidity sensor 3 for detecting outdoor humidity is located near the fan 2, and a humidity sensor 4 for detecting underfloor humidity is located in an underfloor space 6. Then, if outdoor humidity is higher than 70%, or the underfloor humidity is lower than 50%, a fan 2 is turned off, and if the underfloor humidity is higher than 50%, then the fan 2 is operated and the underfloor space 6 is dehumidified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor dehumidifying apparatus for removing moisture from under a floor of a house and a method of dehumidifying an underfloor.

[0002]

2. Description of the Related Art In many cases, termites are generated under the floor of a house. It is known that termites are more likely to occur as the humidity is higher, and conversely they do not grow at a humidity below a certain level. Therefore, outside air is blown into the under-floor to dry the under-floor so as not to generate termites under the floor.
2. Description of the Related Art Conventionally, a device that drives a fan using a solar power as a power source has been marketed so as to use a fan for blowing wind and to automatically blow wind only on a sunny day while avoiding a rainy day.

[0003]

The above-described conventional under-floor dehumidifier using a solar power source is powered by the solar power, and therefore cannot be used in cloudy weather even if it is not raining, Not available at night. Also, if the weather is sunny, even if the outdoor humidity is abnormally high, the outside air is sent and the dehumidification effect does not occur.Also, even when the inside of the floor is dry and there is no need for dehumidification, the outside air is similarly sent, There is a problem that continuous operation is continued.

The present invention has been made in view of the above problems, and provides an underfloor dehumidifying apparatus and an underfloor dehumidifying method capable of effectively dehumidifying underfloor and reducing power consumption. It is intended to be.

[0005]

According to a first aspect of the present invention, there is provided an underfloor dehumidifier for sending air under a floor of a house, and a first humidity sensor installed outdoors. Controlling the operation of the fan based on a second humidity sensor installed under the floor, an outdoor humidity detected by the first humidity sensor, and a humidity under the floor detected by the second humidity sensor. A control device.

According to a fifth aspect of the present invention, there is provided a method of dehumidifying an inside of a floor, wherein the humidity under the outdoor is detected by a first humidity sensor, the humidity under the floor is detected by a second humidity sensor, and the humidity outside the first floor is detected by the first humidity sensor. When the under-floor humidity is smaller than the predetermined value and the under-floor humidity is equal to or higher than the second predetermined value, the fan is operated to send outside air to the under-floor. When the value is smaller than the predetermined value of 2, the fan is deactivated.

In the underfloor dehumidifying apparatus and method, the fan is deactivated when no dehumidification is required due to the outdoor humidity detected by the first humidity sensor and the underfloor humidity detected by the second humidity sensor. . For example, when the outdoor humidity is higher than the first predetermined value, the fan is not operated because the effect of dehumidification cannot be improved even if the air is blown in. Second floor humidity
If the value is smaller than the predetermined value, no further dehumidification is required, so that the fan is also deactivated. When the outdoor humidity is equal to or less than the first predetermined value and the under-floor humidity is equal to or more than the second predetermined value, the fan is operated to send outside air under the floor.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a block diagram showing an underfloor dehumidifier according to an embodiment of the present invention. The underfloor dehumidifying apparatus according to this embodiment includes a control device 1, a fan 2 for sending outside air into the underfloor, two humidity sensors 3,
And 4. The humidity sensor 3 is a sensor for detecting outdoor humidity, and the humidity sensor 4 is a sensor for detecting under-floor humidity. The control device 1 includes a power switch 11, a power supply unit 12 that supplies commercial power as a drive voltage of the fan 2 and converts the power into a DC voltage and supplies the DC voltage to each circuit unit, a CPU 13, a display 14, and a fan drive circuit. 15, an outdoor humidity setting device 16, and an outdoor / underfloor switching device 17. The fan drive circuit 15
The fan 2 is turned on or turned off by a command from the PU 13.
FF. The outdoor humidity setting device 15 is for switching and setting the set value of the outdoor humidity, and has three values of 70%, 75% and 80%.
Switch to the stage. The outdoor / under-floor switch 17 selects the outdoor humidity and the under-floor humidity to be displayed on the display 14 by the switch.

FIG. 2 shows a front panel of the control device 1 of the underfloor dehumidifier in the above embodiment. 2, the same reference numerals as those shown in FIG. 1 indicate the same components. FIG. 3 is a diagram illustrating an example of installation of the underfloor dehumidifying apparatus according to the embodiment. The fan 2 is provided on the southern side wall of the underfloor 6 of the house 5, and when the fan 2 is turned on, that is, starts operating, outside air is blown under the floor via the fan 2. Although not shown, an exhaust port is provided at an appropriate place below the floor 6. The humidity sensor 3 for detecting outdoor humidity is installed on an outer wall near the fan 2, and the humidity sensor 4 for detecting under-floor humidity is installed in a place with high humidity in the under-floor 6 or below the joist containing moisture. Have been. The control device 1 is mounted on a table 7 or the like in a room 8.

Next, the operation of the underfloor dehumidifying apparatus of this embodiment will be described with reference to the flowchart shown in FIG. When the power switch 11 is turned on and the operation is started, the CPU 13
Represents the arrival of a sample time (for example, one minute) (step S
To T1), reads the outdoor humidity S ₁ detected by the humidity sensor 3 (step ST2), reads the underfloor humidity S ₂ detected by the humidity sensor 4 (step ST3).
The read outdoor humidity S ₁ and under-floor humidity S ₂ are determined by the CPU.
13 and the humidity on the side selected by the outdoor / under-floor switch 17 is displayed on the display 14.
If the wires to the humidity sensors 3 and 4 are broken by the rat, the display on the display 14 becomes abnormal.

The CPU 13 has an outdoor humidity setting device 16.
Is read and stored (step ST4). Next, an outdoor humidity S ₁ is K (= 70%) is determined is smaller than or not (step ST5). If the determination is NO, that is, the outdoor humidity S
_{If 1} is 70% or more, the dehumidifying effect is weak even if such humid outside air is sent under the floor, so that the fan 2 is
FF is performed and operation is not performed (step ST8). It should be noted that K can be selected from three values of 70, 75, and 80%, but may be another value between 70% and 80%. Furthermore, if a sharp drying effect is expected, 70
%, For example, 68%, 69%, etc.

[0012] For determination YES in step ST5, further underfloor humidity S ₂ it is determined whether or not less than 50% (step ST6). If the determination is YES, that is, if the underfloor humidity is less than 50%, the underfloor humidity is sufficiently low,
Since there is no need to further dehumidify, the fan 2 is turned off or remains off (step ST8).
Here, the comparison value is set to 50%, but may be set to an appropriate value within the range of 40% to 55% according to the indoor drying condition and other conditions.

If the determination in step ST6 is NO, that is, the outdoor humidity S ₁ is smaller than 70%, and the underfloor humidity S ₂ is 50%.
%, The fan 2 is turned on, that is, put into an operating state (step ST79). As a result, relatively dry air outside is sent into the underfloor 6 through the fan 2 to dry the underfloor 6 and discharge it from the exhaust port.

[0014]

According to the present invention, the outdoor humidity and the under-floor humidity are detected, and the fan is controlled in accordance with the detected humidity. Therefore, when the outdoor humidity is extremely high, the dehumidifying effect does not increase. When the humidity under the floor is very low, there is no need to send in fresh air, so the fan can be stopped, the underfloor can be dried efficiently, and the power required for that can be reduced. Consumption can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an underfloor dehumidifier according to an embodiment of the present invention.

FIG. 2 is a view showing a front panel of a control device of the underfloor dehumidifier.

FIG. 3 is a diagram illustrating an installation state of the under-floor dehumidifier.

FIG. 4 is a flowchart illustrating the operation of the underfloor dehumidifier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control apparatus 2 Fan 3 Humidity sensor for outdoor humidity detection 4 Humidity sensor for underfloor humidity detection 5 House 6 Underfloor

Claims (5)

[Claims] 1. A fan for sending air under the floor of a house, a first humidity sensor installed under the floor, a second humidity sensor installed under the floor, and an outdoor detected by the first humidity sensor. And a control device for controlling the operation of the fan based on the humidity of the floor and the humidity under the floor detected by the second humidity sensor. 2. The under-floor dehumidifying device according to claim 1, wherein the control device turns off the fan when the outdoor humidity is higher than a first predetermined value. 3. The underfloor dehumidifying device according to claim 1, wherein the control device turns off the fan when the underfloor humidity is smaller than a second predetermined value. 4. The control device according to claim 1, wherein the controller operates the fan when the outdoor humidity is equal to or lower than a first predetermined value and the under-floor humidity is equal to or higher than a second predetermined value.
The underfloor dehumidifier according to the above. 5. An outdoor humidity is detected by a first humidity sensor,
The under-floor humidity is detected by the second humidity sensor, and when the outdoor humidity is smaller than the first predetermined value and the under-floor humidity is equal to or more than the second predetermined value, the fan is operated to send the outside air under the floor. ,
A method of dehumidifying an underfloor, wherein the fan is deactivated when the outdoor humidity is equal to or higher than a first predetermined value or when the humidity under the floor is lower than a second predetermined value.