JPH09313788A - Clothes drying method by bathroom ventilating dryer and its controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption in drying clothes by circulating air in a bathroom without heating and increasing the ventilating air quantity during the first half of drying and circulating the air in the bathroom after heating and reducing the ventilating air quantity so as to dry the clothes during the last half of the drying. SOLUTION: A bathroom ventilating drier 4 attached to the ceiling of a unit bath 2 forms a circulating air path 12 and an exhaust air path 13 with a heater in a housing 10, a circulation air blower 14 is provided in the circulating air path 12, and an exhaust air blower 15 is provided in the exhaust air path 13. When clothes 8 in the bathroom is dried by the bathroom ventilating drier 4, during the first half of the drying, the air in the bathroom is dried without heated and the ventilating air quantity is increased and during the last half of the drying, the air in the bathroom is circulated by heated and the ventilating air quantity is reduced so that the clothes 8 are dried. This constitution can dry the clothes 8 by a bathroom ventilating drier 4 effectively using a time zone of without using the bathroom and reduce the power consumption so as to be economical.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a control device for ventilating a bathroom or drying clothes in a bathroom with a bathroom ventilation dryer for drying the bathroom.

[0002]

2. Description of the Related Art Various types of bathroom ventilation dryers are known. For example, a bathroom ventilation dryer disclosed in Japanese Utility Model Laid-Open No. 59-186737 is known. Specifically, a circulating blower that sucks air in the bathroom, discharges the air into the bathroom, and circulates the air in the bathroom, a heater provided in a discharge air passage of the circulating blower, and sucks air in the bathroom. This is a bathroom ventilation dryer equipped with a ventilation blower that ventilates the bathroom by discharging it outdoors.

[0003] The above-mentioned bathroom ventilation dryer has the following features.
It has four functions: drying inside the bathroom, heating inside the bathroom, and sending cool air into the bathroom. For example, a circulation blower circulates the air in the bathroom, and the heater is energized to generate heat to heat the air discharged into the bathroom. At the same time, the ventilation blower causes a part of the air in the bathroom to be exposed outdoors. Drain and ventilate to dry the bathroom.

By drying the inside of the bathroom as described above, the inside of the bathroom becomes a drying chamber, so that clothes and the like can be dried. In this way, if you install a bathroom ventilation dryer in the bathroom, when the bathroom is not in use, for example, from the night when the entire family has finished using the bathroom until the next morning, or when a major member of the family attends school or attends school. There is an advantage that you can use the bathroom as a drying room during the daytime when you are out.

When clothes are dried by using the bathroom as a drying room, the clothes can be hung on a hanger or the like to be dried, so that the clothes are dried as compared with a generally popular drum type clothes dryer. There was also an advantage that it didn't cause self-help.

[0006]

In order to dry the inside of the bathroom with the bathroom ventilation dryer, the circulation blower and the ventilation blower are driven for a predetermined time and at the same time the heater is energized to heat the air in the bathroom with the heater. The entire bathroom is dried by circulating and discharging part of the air in the bathroom to the outside.

Because of this, the power consumption when drying the bathroom and the clothes with the bathroom ventilation dryer is:
The amount of electricity consumed when the clothes are dried by the above-mentioned drum type clothes dryer is very large, and it is disadvantageous in terms of power consumption to dry the clothes by the bathroom ventilation dryer.

[0008] Therefore, an object of the present invention is to provide a clothes drying method by a bathroom ventilation dryer and a device therefor which can reduce power consumption when clothes are dried by the bathroom ventilation dryer.

[0009]

Means for Solving the Problems As a result of various studies and experiments, the present inventor has paid attention to the point of reducing power consumption and drying clothes, and as a result, as described above, the bathroom can be used as a drying room. However, from the night when the whole family has finished using the bathroom until the next morning, or when the main members of the family are at work, attending school, and going out, etc., the bathroom can usually be used as a drying room for 8 hours. We have found that the above can be secured.

Thus, the fact that the bathroom can be used as a drying room for 8 hours or more means that the clothes have to be dried by at least 8 hours, and based on this, the inventor has earnestly studied. As a result of research and experiment, the present invention has been achieved.

The present invention relates to a method for drying clothes in a bathroom by a bathroom ventilation dryer having a function of circulating the air in the bathroom while heating it and ventilating the air in the bathroom outdoors. The air in the bathroom is circulated without heating and the ventilation air volume is increased, and in the latter half of drying, the air in the bathroom is heated and circulated, and the ventilation air volume is reduced to dry the clothes. It is a method of drying clothes with a bathroom ventilation dryer.

[0012]

[Operation] According to the clothes drying method of the present invention, clothes can be dried by the bathroom ventilation dryer by effectively utilizing the time period when the bathroom is not used, and the power consumption thereof is low, which is economical.

According to the present invention, there is provided a bathroom ventilation dryer having a function of circulating the air in the bathroom while heating the air, and a function of ventilating the air in the bathroom to the outside, and a control unit for controlling operation of the bathroom ventilation dryer. A unit for detecting the humidity in the bathroom, a unit for detecting the humidity outside the bathroom, and a unit for outputting a drying operation signal, and the control unit operates the bathroom ventilation dryer in the bathroom when the drying operation signal is input. The air in the room is circulated without being heated, and the operation is performed by increasing the ventilation air volume, and the humidity difference between the humidity inside and outside the bathroom immediately after the operation and the humidity difference between the humidity inside and outside the bathroom during the dry operation Is a clothes drying control device for a bathroom ventilation dryer, which heats and circulates the air in the bathroom when the ratio of and reaches a predetermined value and operates by reducing the ventilation air volume.

[0014]

[Operation] According to the clothes drying control device of the present invention, the clothes can be dried by automatically controlling the operation only by operating the means for outputting the drying operation signal.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A clothes drying experiment was conducted using the experimental equipment shown in FIG. In the experimental facility shown in FIG. 1, a unit bath 2 is installed in an air-conditioned climate chamber 1, a bathroom ventilation dryer 4 is attached to a ceiling 3 of the unit bath 2, and a horizontal bar 6 is attached to an inner wall 5 of the unit bath 2. Is attached via an electric load cell 7. And clothes 8 to dry on this horizontal bar 6
Is hung with a hanger 9.

The bathroom ventilation dryer 4 includes a housing 10
A circulation air passage 12 having a heater 11 therein and an exhaust air passage 13 are formed, and a circulation blower 14 is provided in the circulation air passage 12,
An exhaust blower 15 is provided in the exhaust air passage 13.

The circulation blower 14 and the exhaust blower 15
Is for rotating the sirocco fan 17 by the electric motor 16. The discharge port of the exhaust air path 13 is opened by the duct 18 into the artificial weather chamber 1.

The artificial climate room 1 has a temperature of 20 ° C. and a humidity of 60.
%. The size of the unit bath 2 is 1.25 tsubo. The clothes 8 to be dried are clothes having a dry weight of 5.0 kg immersed in water at 20 ° C. and centrifugally dehydrated for 5 minutes. Each electric motor 1
Reference numeral 6 is a capacitor induction electric motor, which is strong, medium, or weak.
You can switch to stages. Each sirocco fan 17 is the air flow rate when operating strength of the electric motor 16 is 200m ³ / h, to the middle operation 100 m ³ / h, when the weak operation and 50 m ³ / h.

(Experimental Example) The clothes 8 were dried under the above-mentioned conditions as follows. The electric motor 16 of the circulation blower 14 was strongly operated from the beginning to the end of drying the clothes so that the circulating air volume was 200 m ³ / h. The heater 11 was not energized until 6 hours had passed from the beginning of the clothes drying (first half), and 1300 W was passed after 6 hours (second half) to generate heat. The electric motor 16 of the ventilation blower 15 is strongly operated in the first half (until 6 hours have elapsed) of clothes drying to set the ventilation air volume to 200 m ³ / h, and in the second half (after 6 hours has elapsed) it is weakly operated to generate the ventilation air volume. Was 50 m ³ / h.

As described above, while the clothes are being dried, the temperature outside the bathroom, the temperature of the circulating suction, the humidity of the circulating suction, the humidity outside the bathroom, and the temperature of the circulating blowout are measured with the passage of time, and the integrated power is also measured. When the voltage detected by the load cell 7 was measured, the result was as shown in FIG.

(Comparative Example 1) The clothes 8 were dried under the above-mentioned conditions as follows. The electric motor 16 of the circulation blower 14 was strongly operated from the beginning to the end of drying the clothes so that the circulating air volume was 200 m ³ / h. 1300 for heater 11
Electric power of W was applied to generate heat. The electric motor 16 of the ventilation blower 15 was strongly operated in the first half of clothes drying to set the ventilation air volume to 200 m ³ / h, and weakly operated in the latter half to set the ventilation air volume to 50 m ³ / h.

As described above, while drying the clothes, the outside temperature of the bathroom, the circulating suction temperature, the circulating suction humidity, the humidity outside the bathroom, and the circulating blowout temperature are measured with the passage of time, and the integrated electric power is also measured. When the voltage detected by the load cell 7 was measured, the result was as shown in FIG.

Comparative Example 2 The clothes 8 were dried under the above-mentioned conditions as follows. The electric motor 16 of the circulation blower 14 was strongly operated from the beginning to the end of drying the clothes so that the circulating air volume was 200 m ³ / h. 1 for heater 11
Electric power of 300 W was supplied to generate heat. Ventilation blower 1
The electric motor 16 of No. 5 was strongly operated from the beginning to the end of clothes drying, and the ventilation air volume was set to 200 m ³ / h.

As described above, while drying the clothes, the temperature outside the bathroom, the circulation suction temperature, the circulation suction humidity, the humidity outside the bathroom, and the circulation blowout temperature are measured with the passage of time, and the integrated power is also measured. When the voltage detected by the load cell 7 was measured, the result was as shown in FIG.

(Comparative Example 3) The clothes 8 were dried under the above-mentioned conditions as follows. The electric motor 16 of the circulation blower 14 was strongly operated from the beginning to the end of drying the clothes so that the circulating air volume was 200 m ³ / h. 1 for heater 11
Electric power of 300 W was supplied to generate heat. Ventilation blower 1
The electric motor 16 of No. 5 was operated in the middle from the beginning to the end of drying the clothes, and the ventilation air volume was set to 100 m ³ / h.

As described above, while drying the clothes, the outside temperature of the bathroom, the circulating suction temperature, the circulating suction humidity, the humidity outside the bathroom, and the circulating blowout temperature are measured with the passage of time, and the integrated electric power is also measured. When the detection voltage of the load cell 7 was measured, it was as shown in FIG.

(Comparative Example 4) The clothes 8 were dried as described below under the conditions described above. The electric motor 16 of the circulation blower 14 was strongly operated from the beginning to the end of drying the clothes so that the circulating air volume was 200 m ³ / h. 1 for heater 11
Electric power of 300 W was supplied to generate heat. Ventilation blower 1
The electric motor 16 of No. 5 was weakly operated from the beginning to the end of clothes drying to set the ventilation air volume to 50 m ³ / h.

As described above, while drying the clothes, the temperature outside the bathroom, the circulation suction temperature, the circulation suction humidity, the humidity outside the bathroom, and the circulation outlet temperature are measured with the passage of time, and the integrated power is also measured. When the detection voltage of the load cell 7 was measured, it was as shown in FIG.

From the above, the time for drying clothes is 7 hours and 18 minutes in the case of the experimental example, 3 hours and 43 minutes in the case of comparative example 1, 4 hours 55 minutes in the case of comparative example 2, and the comparative example. 4 hours and 35 minutes in the case of 3 and 4 hours and 25 minutes in the case of Comparative Example 4
Minutes.

The integrated power (WH) was 2004 in the experimental example, 4878 in the comparative example 1, 6475 in the comparative example 2, 5934 in the comparative example 3, and 5934 in the comparative example 4. In some cases it was 5597.

The following is a summary of the above.

[0032]

[Table 1]

From the above results, the heater is not energized in the first half of the drying but the heater is energized in the latter half of the drying, the ventilation air volume is increased in the first half of the drying, the ventilation air volume is decreased in the second half of the drying, and is constant from the beginning to the end of the drying. It was found that the integrated power (power consumption) is reduced by drying as the circulating air volume of. The integrated power of the drum type clothes dryer is about 2400 WH, which is lower than the integrated power of the drum type clothes dryer according to the above-described experimental example.

From the above, the heater is not energized at the beginning of drying, and 1/3 of the rating and 2 of the rating are maintained as time passes.
It is presumed that the integrated power will decrease even if the heater is energized in steps of / 3 and the rating.

Next, an example of a device for controlling the bathroom ventilation dryer will be described. As shown in FIG. 7, the bathroom ventilation dryer 4 is attached to the ceiling 21 of the bathroom 20. Doorway 2 of bathroom 20
The door 2 is opened and closed by a door 23, and the door 23 is formed with an air inlet 24 to a bathroom such as a glass. An operation panel 25 is attached to the entrance 22 of the bathroom 20 outside the bathroom.

As shown in FIG. 8, the bathroom ventilation dryer 4 has a circulation air inlet 28, a blowout port 29, a ventilation air inlet 30, and a ventilation port 31 in a main body 27 mounted on a mounting corner member 26 of a ceiling 21 of a bathroom. The main body 27 is provided with a circulation blower 32, a ventilation blower 33, and a heater 34.

In such a bathroom ventilation dryer, by driving the ventilation blower 33, the air in the bathroom can be sucked from the ventilation intake port 30 and discharged to the outside from the ventilation port 31 to ventilate the bathroom.

When the circulation fan 32 is driven and the heater 34 is energized to generate heat, the air in the bathroom can be heated by the heater 34 and blown into the bathroom to heat the bathroom.

Further, the circulation fan 32 and the ventilation fan 3
3 is driven, and the heater 34 is energized to generate heat, so that the air in the bathroom can be heated and circulated,
The bathroom can be dried by discharging high humidity air in the bathroom to the outside. Further, by driving the circulation blower 32 and the ventilation blower 33, respectively, air in the bathroom can be circulated, and cool air can be sent into the bathroom.

A control section 40 is provided on the main body 27. The indoor humidity (circulation suction humidity) is input to the controller 40 from the indoor sensor 41, and the outdoor humidity is input from the outdoor sensor 42 provided on the operation panel 25 as shown in FIG. Further, a plurality of operation signals are input from each switch of the operation panel 25.

As shown in FIG. 9, the operation panel 25 has a ventilation switch 43, a heating switch 44, an energy-saving drying switch 45, a normal drying switch 46, and a cool air switch 4.
7, a stop switch 48, a timer 49, etc. are provided.

When the energy-saving drying signal is input to the controller 40 by operating the energy-saving drying switch 45, the controller 40 enters the energy-saving drying operation mode. At this time, the operating time of the latter half (heater energization operation) of the bathroom ventilation dryer is input to the control unit 40 by the timer 49.

When the control unit 40 enters the energy-saving drying operation mode, first, a rated current is supplied to the electric motors of the circulation blower 32 and the ventilation blower 33 to perform the rated drive. As a result, the air in the bathroom circulates and the air in the bathroom is discharged outdoors.

At the same time, the control unit 40 calculates the difference between the humidity inside the bathroom input from the sensor 41 inside the bathroom and the humidity outside the bathroom input from the sensor outside the bathroom 42, and stores it as the humidity difference immediately after the operation.

After that, the control unit 40 continuously calculates the humidity difference between the humidity inside the bathroom and the humidity outside the bathroom, and compares the calculated current humidity difference with the stored humidity difference immediately after the operation. The comparison value (current humidity difference / humidity difference immediately after operation)
Is determined to be a predetermined value (0.4 to 0.7), it is determined that the first half of the drying operation is completed.

For example, according to the above experimental example, the humidity in the bathroom immediately after the operation is 86% and the humidity outside the bathroom is 60%,
The humidity difference immediately after operation is 26%. After 6 hours, the humidity inside the bathroom is 71% and the humidity outside the bathroom is 60%, so the current humidity difference at that time is 11%. Comparison value is 11% 2
It is 0.42 because it is a value divided by 6%.

When the control unit 40 determines that the first half of the drying operation is completed, the heater 34 is energized to generate heat, and the electric motor of the ventilation fan 33 is switched to the weak operation to set the ventilation air volume to about 1/4 of the rated value.

When the time set by the timer 49 has elapsed from the start of the heater energization operation, the control unit 40 determines that the drying operation has ended and the circulation fan 32, the ventilation fan 33,
Stop energizing the heater 34.

Normally, the controller 4 is operated by operating the dry switch 46.
When the normal dry signal is input to 0, the control unit 40 enters the normal dry operation mode. As a result, the heater is energized and the drying operation is performed for the time set by the timer 49 regardless of the humidity in the bathroom and the humidity outside the bathroom.

The ventilation switch 43 and the heating switch 4
4. When the cool air switch 47 is operated to set the control unit 40 to the ventilation operation mode, the heating operation mode, and the cool air operation mode, the operation is similar to the conventional one. Further, when the stop switch 48 is operated, each operation mode is stopped.

In the above embodiment, the bathroom ventilation dryer having the circulation blower and the ventilation blower has been described. However, one blower and a damper for controlling the blown air of its discharge air to the air outlet and the ventilation port are provided. In the case of a bathroom ventilation dryer, the damper can be switched to change the ventilation air volume.

[0052]

According to the first aspect of the present invention, clothes can be dried by the bathroom ventilation dryer by effectively utilizing the time zone when the inside of the bathroom is not used, and the power consumption thereof is small and economical.

According to the second invention, since the first half of the drying and the second half of the drying are judged by the humidity difference between the humidity in the bathroom and the humidity outside the bathroom, the air in the bathroom can be automatically heated and the ventilation air volume can be reduced. .

According to the third invention, the clothes can be dried by automatically controlling the operation by operating the means for outputting the drying operation signal.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an experimental facility.

FIG. 2 is a chart showing temperature, humidity, integrated power, and load of each part during a drying operation.

FIG. 3 is a chart showing temperature, humidity, integrated power, and load of each part during a drying operation.

FIG. 4 is a chart showing temperature, humidity, integrated power, and load of each part during a drying operation.

FIG. 5 is a chart showing temperature, humidity, integrated power, and load of each part during a drying operation.

FIG. 6 is a chart showing temperature, humidity, integrated power, and load of each part during a drying operation.

FIG. 7 is an overall perspective view showing an example of a control device.

FIG. 8 is a sectional view of a bathroom ventilation dryer.

FIG. 9 is a control circuit diagram.

[Explanation of symbols]

4 ... Bathroom ventilation dryer, 32 ... Circulation blower, 33 ... Ventilation blower, 34 ... Heater, 40 ... Control part, 41 ... Bathroom sensor, 42 ... Bathroom outside sensor.

Claims (3)

[Claims] 1. A method for drying clothes in a bathroom by a bathroom ventilation dryer having a function of circulating the air in the bathroom while heating it and ventilating the air in the bathroom outdoors. It is characterized by circulating the air without heating and increasing the ventilation air volume, and by heating and circulating the air in the bathroom in the latter half of drying, drying the clothes by reducing the ventilation air volume. How to dry clothes with a bathroom ventilation dryer. 2. The air in the bathroom when the ratio between the humidity difference between the humidity inside the bathroom immediately after the drying operation and the humidity outside the bathroom and the humidity difference between the humidity inside the bathroom and the humidity outside the bathroom during the drying operation reaches a predetermined value. The method for drying clothes with a bathroom ventilation dryer according to claim 1, wherein the heating air is circulated and the ventilation air volume is reduced. 3. A bathroom ventilation dryer having a function of circulating the air in the bathroom while heating it, and ventilating the air in the bathroom to the outside, a controller for controlling the operation of the bathroom ventilation dryer, and a bathroom. It is provided with means for detecting internal humidity, means for detecting humidity outside the bathroom, and means for outputting a drying operation signal. When the drying operation signal is input, the control section causes the bathroom ventilation dryer to move to the air inside the bathroom. It is circulated without heating, and it is operated by increasing the ventilation air volume, and the humidity difference between the humidity inside the bathroom and the humidity outside the bathroom immediately after the operation and the difference between the humidity inside the bathroom and the humidity outside the bathroom during the dry operation are A clothes drying control device for a bathroom ventilation dryer that heats and circulates the air in the bathroom when the ratio reaches a predetermined value and operates by reducing the ventilation air volume.