JP2002213874A - Bathroom ventilating/drying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a convenient bathroom ventilating/drying apparatus, wherein a washed article is prevented from again becoming wet after completion of drying operation, without consuming unnecessary energy. SOLUTION: The bathroom ventilating/drying apparatus comprises a circulation fan 2 for sucking in and ventilating in circulation air in a bathroom; a heater 6 for heating air returned into the bathroom with the circulation fan 2; a ventilation fan 4 for exhausting air in the bathroom to the outside of the bathroom; a control device 7 for controlling these members; and an infrared sensor 8 for detecting the presence of an article to be dried, such as laundry in the bathroom. When after the finish of the drying operation the existence of the article has been detected with the infrared sensor 8, the control device 7 is provided with the function of making the ventilating fan 4 drive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation drying apparatus installed in a bathroom or the like for drying laundry such as clothes. The present invention relates to a ventilation drying device having a function of preventing the same.

[0002]

2. Description of the Related Art Conventionally, this type of bathroom ventilation / drying apparatus is known, as disclosed in Japanese Patent Application Laid-Open No. 11-337150, in which a ventilation operation is continuously performed after a drying operation is completed. ing.

[0003]

However, since the conventional bathroom ventilation / drying device does not have a means for detecting the presence or absence of laundry, for example, even after the user takes in the laundry, the ventilation operation is performed. Is continued, so that unnecessary energy is consumed. Therefore, in order to prevent unnecessary energy from being consumed, it is necessary for the user to instruct the end of the ventilation operation after taking in the laundry, which is inconvenient.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a user-friendly device capable of preventing laundry from getting wet again without consuming unnecessary energy. It is to provide a good bathroom ventilation drying device.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, a first aspect of the present invention is a circulation ventilating means for sucking air in a bathroom and returning the air to the bathroom; An apparatus main body composed of an exhaust ventilation unit for exhausting air, a heating unit for heating air returned to the bathroom by the circulation ventilation unit, a control unit for controlling operation of the apparatus main unit, and laundry in the bathroom A ventilation operation for exhausting the whole or a part of the air sucked from the bathroom to the outside of the bathroom by the exhaust ventilation means, and At least two of a drying operation in which a part is heated by the heating means and returned to the bathroom by the circulation ventilation means and the remaining air is exhausted to the outside of the bathroom by the exhaust ventilation means can be freely switched. In the chamber ventilation drying apparatus, comprising the drying operation first moistureproof operation function of performing the ventilation mode after completion, the control means at the time when the drying operation is completed,
When the object detecting means detects the object to be dried continuously for a predetermined first predetermined time, the object detecting means has a function of performing the first moisture-proof operation, so that the inside of the bathroom after the drying operation is completed. It is possible to prevent the laundry from becoming wet again by the high humidity air, and furthermore, when the drying operation is completed after taking in the laundry, unnecessary energy is not consumed.

[0006] In the second invention, the control means, when the object detecting means does not detect the object to be dried continuously for a predetermined second predetermined time during the first moisture-proof operation, Since the first moisture-proof operation is provided with a function of ending the operation, the exhaust ventilation means is automatically stopped when the laundry is taken in, so that unnecessary energy consumption can be prevented and the user can use the ventilation system. Since there is no need to give an instruction to stop, it is convenient.

In a third aspect of the present invention, in the bathroom ventilation / drying apparatus, there is provided a temperature detecting means for detecting a temperature of the air in the bathroom between an intake port for sucking air in the bathroom and the exhaust ventilation means. A second moisture-proof operation function for performing the drying operation subsequent to the moisture-proof operation, wherein the control means detects the temperature equal to or less than a predetermined first predetermined temperature during the first moisture-proof operation. In such a case, since the function of performing the second moisture-proof operation is provided, when the outside air temperature is low in winter or the like, it is possible to prevent the dried laundry from becoming cold, thereby impairing the finished feeling of drying. There is no.

According to a fourth aspect, during the second moisture-proof operation, when the temperature detecting means detects a temperature equal to or higher than a second predetermined temperature set higher than the first predetermined temperature, the control means sets Since a function of switching from the second moisture-proof operation to the first moisture-proof operation is provided, unnecessary heating of the heating unit is not performed even after the laundry is sufficiently warmed, so unnecessary energy consumption is reduced. Can be prevented.

According to a fifth aspect, the control means includes a step of, when the object detecting means does not detect an object to be dried continuously for a predetermined second predetermined time during the second moisture-proof operation, Since the function of ending the second moisture-proof operation is provided, when taking in the laundry, the exhaust ventilation unit, the circulation ventilation unit, and the heating unit are automatically stopped, so that unnecessary energy consumption can be prevented. It is easy to use because it is possible and the user does not need to give an instruction to stop the drying operation.

In a sixth aspect of the present invention, in the bathroom ventilating and drying apparatus, there is provided a humidity detecting means for detecting the humidity of the air in the bathroom between an intake port for sucking air in the bathroom and the exhaust ventilation means. A second moisture-proof operation function for performing the drying operation subsequent to the moisture-proof operation, wherein the control means detects that the humidity detection means detects a predetermined first humidity or more during the first moisture-proof operation. In this case, since the function of performing the second moisture-proof operation is provided, the humidity of the outside air is extremely high in rainy weather or the like, and even if the drying state of the laundry cannot be sufficiently maintained only by the ventilation operation, the laundry is re-equipped. It becomes possible to prevent it from getting wet.

In a seventh aspect, during the second moisture-proof operation, when the humidity detecting means detects a second predetermined humidity or less which is lower than the first predetermined humidity, the control means sets Since the function of switching from the second moisture-proof operation to the first moisture-proof operation is provided, when the humidity in the bathroom decreases to such an extent that the drying state can be sufficiently maintained only by the ventilation operation, the heating means is wastefully used. Without working
Unnecessary energy consumption can be prevented.

[0012] In the eighth invention, the control means, when the object detecting means does not detect the object to be dried continuously for a predetermined second predetermined time during the second moisture proof operation, Since the function of ending the second moisture-proof operation is provided, when taking in the laundry, the exhaust ventilation means, the circulation ventilation means, and the heating means are automatically stopped, so that unnecessary energy consumption can be prevented. It is easy to use because it is possible and the user does not need to give an instruction to stop the drying operation.

According to a ninth aspect of the present invention, there is provided a circulation ventilating means for sucking air in the bathroom and returning the air to the bathroom, an exhaust ventilation means for exhausting the air in the bathroom out of the bathroom, and the circulation ventilation means. A device main body comprising heating means for heating the air returned to the bathroom, a control means for controlling the operation of the device main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. The drying operation is completed in a bathroom ventilation / drying apparatus including a temperature detection unit that detects a temperature of air provided in a bathroom and an object detection unit that detects presence / absence of an object to be dried such as laundry in the bathroom. After the circulation ventilation unit, the exhaust ventilation unit, and the heating unit are stopped, a third moisture-proof operation function for performing the drying operation again is provided, and the control unit detects the temperature detection unit after the drying operation is completed. Preset temperature A function of performing the third moisture-proof operation when the object detecting means continuously detects the object to be dried for a predetermined first predetermined time. Since the temperature in the bathroom is sufficiently high after the drying operation is completed and the laundry does not get wet, the moisture-proof operation is not wastefully performed, and the drying is performed only when the temperature drops to a temperature at which the laundry gets wet. Driving makes it possible to prevent unnecessary energy consumption.

In a tenth aspect, the control means detects that the temperature detected by the temperature detecting means detects a fourth predetermined temperature higher than the third predetermined temperature during the third moisture-proof operation. Since the third moisture-proof operation is terminated, when the temperature in the bathroom is sufficiently warm to the extent that the laundry does not get wet, the exhaust ventilation means, the circulation ventilation means, and the heating means are automatically turned on. As a result, unnecessary energy consumption can be prevented.

[0015] In the eleventh invention, the control means, when the object detecting means does not detect the object to be dried continuously for a predetermined second predetermined time during the third moisture proof operation, Since it has the function of ending the third moisture-proof operation, when taking in the laundry, the exhaust ventilation means, the circulation ventilation means, and the heating means automatically stop, so that unnecessary energy consumption can be prevented. It is easy to use because it is possible and the user does not need to give an instruction to stop the drying operation.

In the twelfth aspect, the ventilation means for sucking air in the bathroom and returning the air to the bathroom, the ventilation means for exhausting the air in the bathroom out of the bathroom, and the ventilation means for circulation. A device main body comprising heating means for heating the air returned to the bathroom, a control means for controlling the operation of the device main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. The drying operation is completed in a bathroom ventilation / drying apparatus including a humidity detecting unit configured to detect humidity of air provided in a bathroom and an object detecting unit configured to detect presence / absence of an object to be dried such as laundry in the bathroom. After stopping the circulation ventilation means, exhaust ventilation means, heating means,
A third moisture-proof operation function for performing the drying operation again is provided, and the control unit detects the detected humidity of the humidity detection unit at or above a third predetermined humidity after the drying operation is completed, and When the object detecting means detects the object to be dried continuously for a predetermined first predetermined time, the function of performing the third moisture-proof operation is provided. Prevent unnecessary energy consumption because the drying operation is performed only when the humidity rises to the point where the laundry becomes damp without wasting the moisture-proof operation when the laundry is low enough and the laundry does not get wet. Becomes possible.

In the thirteenth invention, the control means detects a fourth predetermined humidity, wherein the detected humidity of the humidity detection means is set lower than the third predetermined humidity during the third moisture-proof operation. In addition, since it has a function of ending the third moisture-proof operation, when the humidity in the bathroom becomes sufficiently low that the laundry does not get wet, the exhaust ventilation means, the circulation ventilation means, and the heating means are provided. Since the operation is automatically stopped, unnecessary energy consumption can be prevented.

In the fourteenth invention, the control means is configured to execute the control when the object detecting means does not detect the object to be dried continuously for a predetermined second predetermined time during the third moisture proof operation. Since it has the function of ending the third moisture-proof operation, when taking in the laundry, the exhaust ventilation means, the circulation ventilation means, and the heating means automatically stop, so that unnecessary energy consumption can be prevented. It is easy to use because it is possible and the user does not need to instruct to stop the drying operation.

In a fifteenth aspect, the control means stores an average value of detection signal levels from the object detection means for a predetermined time period from the start of the drying operation as a level with an object to be dried. At the end of the drying operation or during the first to third moisture proof operations, if the signal level from the object detecting means has decreased by a predetermined level from the level with the object to be dried, the object to be dried has disappeared. Since it has a function to judge, it is possible to judge whether laundry is taken in based on the level of reflected light when the laundry is dried, and it is possible to determine the reflection from laundry pipes and other non-laundry. It is not possible to erroneously determine that there is laundry at the light level.

In a sixteenth aspect of the present invention, in the bathroom ventilating / drying apparatus having a function of changing at least the amount of ventilation of the circulation ventilation means stepwise with the elapse of the operation time in the drying operation, the control means includes: At the start of the drying operation and every time the amount of ventilation changes, the detection signal level from the object detection means is read, and the average value is stored as the level with the object to be dried, at the end of the drying operation or from the first to the second. If the signal level from the object detection means is lower than the level with the object to be dried during the moisture-proof operation, a function to determine that the object to be dried has disappeared is provided. The laundry that dries relatively quickly is captured during the drying operation, and even if the signal level detected by the object detection means decreases, all the laundry is captured. It becomes possible to prevent the erroneously detected that it.

In the seventeenth aspect, the ventilation ventilation means for sucking the air in the bathroom and returning the air to the bathroom, the ventilation ventilation means for exhausting the air in the bathroom out of the bathroom, and the ventilation ventilation means A device main body comprising heating means for heating the air returned to the bathroom, a control means for controlling the operation of the device main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. Ventilation operation for providing humidity detection means for detecting the humidity of the air in the bathroom provided, exhausting all or part of the air taken in from the bathroom to the outside of the bathroom by the exhaust ventilation means, and sucking in from the bathroom At least two of the drying operations in which a part of the air is heated by the heating means and returned to the bathroom by the circulation ventilation means and the remaining air is exhausted out of the bathroom by the exhaust ventilation means are freely performed. In the replaceable bathroom ventilation and drying apparatus, a first moisture-proof operation function for performing the ventilation operation after the drying operation is provided, wherein the control unit detects the humidity detected by the humidity detection unit during the drying operation to a third level. After being within a range of a sixth predetermined humidity set lower than the fifth predetermined humidity and the fifth predetermined humidity continuously for a predetermined time or more,
When the detected humidity of the humidity detecting unit has increased by a predetermined value or more, the first moisture-proof operation is not performed.When the detected humidity of the humidity detecting unit has not increased by a predetermined value or more, the time when the drying operation ends. Since the first moisture-proof function is provided, it is possible to prevent the laundry from getting wet again after the drying operation is completed, and furthermore, the bathroom door to allow the user to take in the laundry. When the air is opened, the air in the bathroom and outside the bathroom are replaced, and it is determined that the laundry has been taken in by detecting the rise in the humidity of the air in the bathroom at that time, and the first moisture-proof operation is not automatically performed. Therefore, unnecessary energy consumption can be prevented, and since the user does not need to instruct to stop the ventilation, the usability is good.

In the eighteenth aspect, the control means may be configured such that during the drying operation, the humidity detected by the humidity detecting means continues for a third predetermined time or longer and the fifth predetermined humidity and the sixth predetermined humidity are maintained. Without falling within the range, when the humidity continues to drop, at the time when the drying operation is completed, the first moisture proof operation is provided, so that when the drying operation time is completed, the function is completely performed. Even if there is laundry that is not completely dried, it is possible to prevent another dried laundry from becoming wet again due to the humidity generated from the laundry.

In the nineteenth aspect, a fourth moisture-proof operation function is provided for continuing the drying operation even after the drying operation time has expired, and the control means includes:
If the humidity detecting means does not fall within the range of the fifth predetermined humidity and the sixth predetermined humidity continuously for a third predetermined time or more, and the humidity continues to decrease, the fourth moisture-proof operation is performed. Because it has a function to perform, even if there is laundry that has not completely dried at the end of the drying operation time, it is possible to completely dry all the laundry to continue drying further .

In the twentieth aspect, the control means may be configured such that during the fourth moisture-proof operation, the humidity detected by the humidity detection means continues for a third predetermined time or more and the fifth predetermined humidity and the sixth humidity are maintained. When the laundry is dried, when the laundry is dried, the ventilation means for circulation and the heating means are automatically stopped when the humidity is within the predetermined humidity range. Therefore, unnecessary energy consumption can be prevented.

In the twenty-first aspect, the control means, when the humidity detected by the humidity detecting means has risen by a predetermined value or more during a fourth predetermined time during the first moisture-proof operation, Since the first moisture-proof operation is terminated, when the user opens the bathroom door to take in the laundry, the air outside the bathroom and the bathroom is replaced, and the air in the bathroom at that time is replaced. It detects that the laundry has been taken in by detecting the increase in humidity, and automatically stops the exhaust ventilation means, thereby preventing unnecessary energy consumption and instructing the user to stop ventilation. Since there is no need, it is easy to use.

In the twenty-second aspect, the circulation ventilation means for sucking air in the bathroom and returning the air to the bathroom, the exhaust ventilation means for exhausting the air in the bathroom out of the bathroom, and the circulation ventilation means A device main body comprising heating means for heating the air returned to the bathroom, a control means for controlling the operation of the device main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. A ventilating operation for exhausting all or a part of the air sucked from the bathroom to the outside of the bathroom by the exhaust ventilation means, and a suction operation from the bathroom; At least two of the drying operations in which a part of the air is heated by the heating means and returned to the bathroom by the circulation ventilation means and the remaining air is exhausted out of the bathroom by the exhaust ventilation means are freely performed. In the replaceable bathroom ventilation drying device, a first moisture-proof operation function of performing the ventilation operation after the drying operation is provided, wherein the control unit detects that the temperature detected by the temperature detection unit is equal to or higher than a predetermined value during the drying operation If the temperature has decreased, the first moisture-proof operation is not performed.If the temperature detected by the temperature detecting means does not decrease by a predetermined value or more, the first moisture-proof operation is performed at the time when the drying operation is completed. This prevents the laundry from getting wet again after the drying operation is completed, and when the user opens the bathroom door to take in the laundry, the air in the bathroom and outside the bathroom are replaced. It is determined that laundry has been taken in by detecting a decrease in the temperature of the air in the bathroom at that time, and because the first moisture-proof operation is not automatically performed, unnecessary energy consumption can be prevented. When In, because there is no need for the user to instruct the stop of ventilation, ease of use may be.

In the twenty-third aspect, the control means may be configured to determine whether the temperature detected by the temperature detecting means has decreased by a predetermined value or more during a fourth predetermined time during the first moisture-proof operation. Since the first moisture-proof operation is terminated, when the user opens the bathroom door to take in the laundry, the air in the bathroom and outside the bathroom is replaced, and the air in the bathroom at that time is replaced. By detecting that the temperature has dropped, it is determined that the laundry has been taken in, and the ventilation means for exhaust is automatically stopped, so that unnecessary energy consumption can be prevented and the user instructs to stop ventilation. Since there is no need, it is easy to use.

In the twenty-fourth aspect, the circulation ventilation means for sucking air in the bathroom and returning the air to the bathroom, the exhaust ventilation means for exhausting the air in the bathroom out of the bathroom, and the circulation ventilation means A device main body comprising heating means for heating the air returned to the bathroom, a control means for controlling the operation of the device main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. An exhaust ventilation unit, comprising: humidity detection means for detecting humidity of air in the bathroom provided; and temperature detection means for detecting the temperature of air in the bathroom. Ventilation operation to exhaust air out of the bathroom by heating, a part of the air sucked from the bathroom is heated by the heating means and returned to the bathroom by the circulation ventilation means, and the remaining air is exhausted by the exhaust ventilation means to the bathroom. At least 2 of the drying operation for exhausting the
In the bathroom ventilation dryer that can be switched freely,
A first moisture-proof operation function of performing the ventilation operation after the drying operation is provided, and the control unit is configured to perform the fifth detection operation while the humidity detected by the humidity detection unit continues for a third predetermined time or more during the drying operation. After being within the range of the predetermined humidity and the sixth predetermined humidity, the detected humidity of the humidity detecting means changes by a predetermined value or more, and if the detected temperature of the temperature detecting means decreases by a predetermined value or more, the first When the moisture-proof operation is not performed, and when the detected humidity of the humidity detecting means does not change by a predetermined value or more, or when the temperature detected by the temperature detecting means does not decrease by a predetermined value or more, when the drying operation is completed In, since it has a function of performing the first moisture-proof operation,
It is possible to prevent the laundry from getting wet again after the drying operation is completed, and furthermore, when the user opens the bathroom door to take in the laundry, the air in the bathroom and outside the bathroom is replaced, and In addition to detecting a decrease in the temperature of the air in the bathroom, the determination is made based on a change in humidity, so that it is possible to more accurately determine that laundry has been taken in, and the first moisture-proof operation is not automatically performed. Therefore, unnecessary energy consumption can be prevented, and the user does not need to instruct to stop the ventilation, so that the usability is good.

[0029] In the twenty-fifth aspect, during the drying operation, the control means may be configured such that the humidity detected by the humidity detecting means continues for a third predetermined time or more and the fifth predetermined humidity and the sixth predetermined humidity are maintained. If the humidity does not fall within the range, the first moisture-proof operation is provided when the humidity has been reduced.Therefore, there was laundry that was not completely dried at the end of the drying operation time. Even so, it is possible to prevent another dried laundry from getting wet again due to the humidity generated from the laundry.

[0030] In the twenty-sixth aspect, a fourth moisture-proof operation function is provided in which the drying operation is continued even after the drying operation time has expired, and the control means is configured to perform the following during the drying operation:
When the humidity detected by the humidity detecting means does not fall within the range of the fifth predetermined humidity and the sixth predetermined humidity continuously for a third predetermined time or more, and the humidity continues to decrease, the drying operation time After the end of the drying operation, the fourth moisture-proof operation is provided, so that even if there is laundry that is not completely dried at the end of the drying operation time, all drying is continued to continue drying. The laundry can be completely dried.

[0031] In the twenty-seventh aspect, during the fourth moisture-proof operation, the control means keeps the humidity detected by the humidity detection means for a third predetermined time or longer and sets the fifth predetermined humidity and the sixth humidity. When the humidity is within the predetermined humidity range, the function of performing the first moisture-proof operation is provided. As a result, unnecessary energy consumption can be prevented.

[0032] In the twenty-eighth aspect, the control means decreases the temperature detected by the temperature detection means by a predetermined value or more during a predetermined fourth predetermined time during the first moisture-proof operation. When the humidity detected by the humidity detecting means has changed by a predetermined value or more, a function of terminating the first moisture-proof operation is provided, so that when a user opens a bathroom door to take in laundry, the bathroom and The air outside the bathroom is replaced, and at that time the temperature drop of the air in the bathroom is detected,
Since the determination is made after detecting the humidity change, it is possible to more accurately determine that the laundry has been taken in. Further, since the first moisture proof operation is not automatically performed, unnecessary energy consumption can be prevented. At the same time, since the user does not need to instruct the stop of the ventilation, the usability is good.

In a twenty-ninth aspect of the present invention, in the bathroom ventilation / drying apparatus having an operation section for transmitting an operation command of the apparatus main body to the control means, the operation section includes the first moisture-proof operation after the drying operation. Second moisture-proof operation, third moisture-proof operation,
Since it has a function of switching between a moisture-proof operation mode in which a moisture-proof operation including at least one of the fourth moisture-proof operation and a single mode in which the moisture-proof operation is not performed after the drying operation, it can be used in a sunny day in summer or the like. If there is no danger of the laundry getting wet after leaving the drying operation, there is no need to perform unnecessary ventilation and drying operations to prevent moisture, so unnecessary energy consumption can be prevented. Become.

According to the thirtieth aspect, since the operation section is provided with a function of indicating that the operation mode is the moisture-proof operation mode, the apparatus main body moves even after the drying operation time has elapsed. It is possible to prevent the user from misunderstanding that a malfunction has occurred.

In the thirty-first aspect, the operation unit has a function of displaying that the first moisture-proof operation, the second moisture-proof operation, the third moisture-proof operation, and the fourth moisture-proof operation are being performed, respectively. Therefore, the user can know whether or not heating is being performed by the heating means even in the moisture-proof operation, and can know when to take in the laundry.

[0036] In the thirty-second aspect, the control means is configured to perform the moisture-proof operation including at least one of the first moisture-proof operation, the second moisture-proof operation, the third moisture-proof operation, and the fourth moisture-proof operation. Since the function of terminating the moisture-proof operation is provided when the operation has been continued for a predetermined time from the end of the operation, a failure or the like occurs in the object detection means and the presence of the object to be dried is continuously detected. Even if the user forgets to go and goes on a trip or the like, the exhaust ventilation means, the circulation ventilation means, and the heating means automatically stop, so that unnecessary energy consumption can be prevented.

According to a thirty-third aspect, in the bathroom ventilation / drying apparatus provided with an operation section for transmitting an operation command of the apparatus main body to the control means, the operation section includes the first moisture-proof operation,
The second moisture proof operation, the third moisture proof operation, the predetermined time until the end of the moisture proof operation including at least one of the fourth moisture proof operation is provided, a function that can be arbitrarily changed, for example, during the drying operation If it is known in advance that laundry cannot be taken in immediately after the drying operation is completed because it is necessary to go out, the time period for the moisture-proof operation can be set longer. It is easier to use.

[0038] In the thirty-fourth aspect, the operation unit is configured to perform the moisture-proof operation including at least one of the first moisture-proof operation, the second moisture-proof operation, the third moisture-proof operation, and the fourth moisture-proof operation for the predetermined time. Since a function is provided to indicate that the moisture-proof operation has been completed when the operation is continuously completed, even if the user is not in the moisture-proof operation state when trying to take in the laundry, the apparatus body is broken. If this indication is displayed even though the user took in the laundry during the moisture-proof operation, it can be concluded that there was an abnormality in the object detection means. It becomes possible to know.

In the thirty-fifth aspect, at least one of the operation unit and the control unit includes a sound notification unit,
When the drying operation and the second moisture-proof operation, the third moisture-proof operation, and the fourth moisture-proof operation are completed, a function for notifying by sound is provided. Since it is possible to know and the user can take in the laundry immediately after the end of the drying operation, unnecessary energy consumption can be prevented.

[0040]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a bathroom ventilation and drying apparatus according to an embodiment of the present invention, FIG. 2 is a configuration diagram of an operation unit, and FIG. 3 is a schematic configuration diagram of the inside of a control device. FIG. 4 is a control flowchart of the moisture-proof operation performed subsequent to the drying operation.

As shown in FIG. 1, the bathroom ventilation / drying device comprises:
A circulating fan motor 3 having a circulating fan 2 for sucking air in the bathroom from an air inlet 10 and blowing out warm air from the circulating port 11 into the bathroom through a circulating air guide plate 13 and a heater 6, and sucks air in the bathroom. A ventilation fan motor 5 to which a ventilation fan 4 for exhausting air from an exhaust port 12 to the outside through an air guide plate 14 for intake and ventilation through a port 10; an infrared light emitting element 8a; and infrared light output from the infrared light emitting element 8a. Infrared light receiving element 8 for receiving reflected light
b, an infrared sensor 8 for detecting the presence or absence of an object to be dried such as laundry in the bathroom, an intake port 10 and a ventilation fan 4
A thermistor 9 attached to a ventilation air guide plate 14 located between the two to detect the temperature of air taken in from the bathroom.
And a control device 7 for controlling the circulation fan motor 3, the ventilation fan motor 5, the heater 6, the infrared sensor 8, and the thermistor 9, and are connected to the control device 7 via a communication line (not shown). And an operation unit 15.

The operation unit 15 includes a drying and moisture-proof operation switch 16c for performing a moisture-proof operation following the drying operation, a drying only operation switch 16b for performing only the drying operation, a ventilation operation switch 16d, a heating operation switch 16e, and a cool air operation switch 1.
6f, an operation stop switch 16a for instructing to stop each operation, and operation switches 16b, 16c, 16d, 1
LEDs 17b, 17 for displaying the operating states of 6e, 16f
c, 17d, 17e, 17f, a display section 18 for displaying the driving time, etc., a buzzer (not shown) for giving a sound notification, and a minus switch 16g for setting the driving time, etc.
A plus switch 16h, a reservation switch 16i for setting a reservation, and an LED 17i for displaying a reservation state are provided.

As shown in FIG. 3, the inside of the control device 7 includes a circulation fan drive circuit 23 for driving the circulation fan motor 3, a ventilation fan drive circuit 24 for driving the ventilation fan motor 5, and a heater 6. Heater drive circuit 25
And a light emitting circuit 19 connected to an infrared light emitting element 8a constituting an infrared sensor 8 for detecting the presence or absence of an object to be dried such as laundry in the bathroom, and light emitted from the infrared light emitting element 8a. An amplification circuit 20 connected to the infrared light receiving element 8b for receiving the reflected light of the infrared light and amplifying the signal output from the infrared light receiving element 8b in accordance with the intensity of the reflected light; A reference setting circuit 21 to be set, a comparison circuit 22 that compares the output of the amplifier circuit 20 with the output of the reference circuit 21 to detect the presence or absence of a substance to be dried, and a thermistor 9 that detects the temperature of the air sucked from the bathroom. And a communication circuit 26 for communicating with the operation unit are connected to a control unit 28 composed of a microcomputer or the like.

In the above configuration, as shown in FIG. 4, when the user presses the dry / dry operation switch 16c of the operation unit 15 (S1), the information is transmitted to the control device 7 through a communication line (not shown) and the instruction is given. The control unit 28 including the microcomputer incorporated in the control device 7 according to
Thereby, the driving of the circulation fan 2 connected to the circulation fan motor 3, the ventilation fan 4 connected to the ventilation fan motor 5, and the heater 6 are controlled, and the operation unit 15 turns on the drying and moisture proof operation LED 17 c (S 2). At this time, the infrared light is emitted from the infrared light emitting element 8a by the light emitting circuit 19, and the reflected light from the object to be dried such as laundry is received by the infrared light receiving element 8b. It is stored as the presence level (S3). When the operation time set by the minus switch 16g and the plus switch 16h elapses (S4), the control unit 22 starts a sensor abnormality timer for detecting abnormality of the infrared sensor (S5). The infrared light is emitted from the infrared light emitting element 8a, the reflected light from the object to be dried such as laundry is received by the infrared light receiving element 8b, and the presence or absence of the object to be dried such as laundry is detected by the comparison circuit 22 (S6). ).

If it is determined that there is no material to be dried (S7), the operation section 15 sounds a buzzer (S8) to notify the user of the end of the drying operation and, at the same time, turns off the drying and moisture-proof LED 17c. The control unit 28 stops the drive of the ventilation fan motor 5, the ventilation fan 4 and the energization of the heater 6 by the ventilation fan drive circuit 24 and the heater drive circuit 25 (S9), and after 10 seconds have passed (S10), the circulation fan drive circuit By 23, the driving of the circulation fan 2 is stopped through the circulation fan motor 3 (S11).

When it is determined that there is an object to be dried (S7), the operation unit 15 sounds a buzzer to notify the user of the end of the drying operation, and at the same time, to dry the moisture-proof LED.
17c is turned on and off to notify that the moisture-proof operation for maintaining the drying state of the laundry is operating, and the control unit 28 stops the energization of the heater 6 by the heater driving circuit 25 (S12), and further for 10 seconds. After a lapse of time (S13), the circulation fan drive circuit 23 stops the circulation fan 2 through the circulation fan motor 3 (S14), but continues to drive the ventilation fan 4 to prevent the laundry from getting wet again.

Thereafter, the control unit 28 determines whether or not the detected temperature of the thermistor 9 has become 30 ° C. or less via the thermistor reading circuit 27 (S15). While continuing
The detection of the presence or absence of the object to be dried is continued by the infrared sensor 8 (S16), and when it is detected that the object to be dried has been lost (S17), it is determined that the laundry has been taken in by the user, and the operation unit 15 is dried. Turn off the moisture-proof LED 17c (S1
8) The driving of the ventilation fan 4 is stopped by the ventilation fan drive circuit 24 through the ventilation fan motor 5 (S19), and the moisture-proof operation for preventing the laundry from getting wet again is stopped. In addition, the absence of the object to be dried is not detected (S1
7) When the sensor abnormality timer times out (S2
0), the control unit 28 determines that the infrared sensor 8 has an abnormality, displays a code indicating the infrared sensor abnormality on the display unit 18 of the operation unit 15 (S21), turns off the drying and moisture-proof LED 17c, and drives the circulation fan. The driving of the circulation fan 2 and the circulation fan motor 3, the ventilation fan 4 and the ventilation fan motor 5, and the energization of the heater 4 are stopped by the circuit 23, the ventilation fan drive circuit 24 and the heater drive circuit 25 (S9, S10, S11).

Next, when the thermistor 9 detects a temperature of 30 ° C. or lower (S15), the control unit 28 controls the circulating fan drive circuit 2
3 and the heater drive circuit 25 drive the circulation fan motor 3 and the circulation fan 2 and energize the heater 6 (S2).
2) Prevents the finish feeling of the dried laundry from being impaired due to a decrease in temperature. Thereafter, when the detected temperature of the thermistor 9 becomes 40 ° C. or higher (S23), the operation unit 15 sounds the buzzer again to notify the user of the timing to take in the laundry, and the control unit 28 controls the heater drive circuit 25.
To stop the energization of the heater 6 (S12), and
After a lapse of seconds (S13), the circulation fan drive circuit 23 stops driving the circulation fan 2 through the circulation fan motor 3 (S14).

Further, when the temperature detected by the thermistor 9 is 4
Before detecting the temperature of 0 ° C. or higher (S23), if the control unit 28 detects that the object to be dried has disappeared by the infrared sensor 8 (S24, S25), it is determined that the laundry has been taken in by the user, and the operation is performed. The drying and moisture-proof LED 17c of the section 15 is turned off, the ventilation fan drive circuit 24 and the heater drive circuit 25 stop driving the ventilation fan motor 5, the ventilation fan 4, and energizing the heater 4 (S9), and after 10 seconds have elapsed ( S10) The circulation fan drive circuit 23 stops driving the circulation fan 2 through the circulation fan motor 3 (S11). If the temperature of the sensor abnormality timer is up in a state where the temperature detected by the thermistor 9 is not higher than 40 ° C. and the presence of the object to be dried is detected by the infrared sensor 8 (S26), the control unit 28 sets the infrared Sensor 8
Is determined to be abnormal, a code indicating an infrared sensor abnormality is displayed on the display unit 18 of the operation unit 15 (S27), the drying and moisture proof LED 17c is turned off, and the circulation fan driving circuit 23, the ventilation fan driving circuit 24, and the heater The drive circuit 25 stops driving the circulation fan 2 and the circulation fan motor 3, the ventilation fan 4 and the ventilation fan motor 5, and stops energizing the heater 4 (S9, S10, S11).

Next, the level storage processing with the object to be dried (FIG. 4)
S3) will be described with reference to FIG.

When the drying object existence level storage process is started, the control unit 28 first checks whether or not the result of the drying object existence determination is valid (S1). To end. If not, the control unit 28
Clears the variable n stored in the RAM of the CPU to 0 (S
2). Then, a one-second timer is started (S3), and when the time is up (S4), the light emitting circuit 19 is driven to emit infrared rays from the infrared light emitting element 8a (S5), and the light is hit by the object to be dried such as laundry and reflected. The infrared light is received by the infrared light receiving element 8b, and a signal output from the infrared light receiving element is amplified by the amplifier circuit 20 in accordance with the intensity of the reflected light.記憶 Stored as ₀ (S6). And the control unit 28
Increment the variable n on the RAM by 1 (S7),
It is determined whether the variable n has become 10 or more (S8).
Therefore, if the variable n is less than 10, the one-second timer is started again (S3), and the time is up (S3).
4) The light emitting circuit 19 is driven to emit infrared light from the infrared light emitting element 18a (S5). The infrared light reflected again on the laundry or the like is received by the infrared light receiving element 8b, and the output of the amplifier circuit 20 according to the intensity of the light is output to R.
Stored as a variable theta ₁ on AM (S6).

The above operation is repeated ten times and the variable n
Is greater than or equal to 10 (S8), the variables _{０ 0 to ｎ n-1}
(S9), and the obtained Θ is stored in the RAM of the control unit 28 as the level with the object to be dried (S10).
The value obtained by subtracting Θ (for example, 50) is output to the reference setting circuit 21 and set as a level at which the object to be dried has disappeared (S1).
1). At this time, the control unit 28 sets the dry matter presence / absence determination result defined as a variable on the RAM to be present (S12).

Subsequently, the process for determining the presence / absence of the object to be dried (FIG. 4)
S14 and S24) will be described with reference to FIG.

When the process for determining the presence or absence of the object to be dried is started, the control unit 28
Starts a one-minute timer for presence / absence determination and a two-minute timer for presence / absence determination limit for interrupting the determination process when presence / absence determination cannot be performed due to noise or the like (S
1). Then, the light emitting circuit 19 is driven to drive the infrared light emitting element 8.
a, infrared rays are projected from a (S2), and the infrared rays reflected on the laundry or the like are received by the infrared receiving element 8b,
A signal output from the infrared light receiving element 8b is amplified by the amplifier circuit 20 in accordance with the intensity of the reflected light, and is amplified by the comparison circuit 22.
Is input to The reference setting circuit 2 determines the level without the object to be dried in the level storage processing with the object to be dried shown in FIG.
The value set to 2 is also input to the comparison circuit 22, and the output of the amplification circuit 20 and the output of the reference setting circuit 21 are compared by the comparison circuit 22. If the output of the amplification circuit 20 is large, the comparison circuit 22
The Hi level is output, and if the output of the amplifier circuit 20 is smaller, the Lo level is output from the comparison circuit 22,
The control unit 28 stores the signal in the variable $ new on the RAM (S3).

Next, a 10-second timer is started (S
4) When the timer expires after 10 seconds have elapsed (S
5) The variable $ new stored earlier is substituted for the variable $ old on the RAM (S6). Then, the light emitting circuit 19 is driven again to emit infrared light from the infrared light emitting element 18a (S7). The output of the reference setting circuit 21 is compared with the output of the reference setting circuit 21, and the output level is stored again as a variable $ new on the RAM (S8).

Then, $ old and $ new are compared, and if the values are the same (S9), it is checked whether or not the time of the presence / absence determination timer has expired (S10). S4, S5) @new
Is substituted for $ old (S6), and the light emitting circuit 19
Is driven to emit infrared light from the infrared light emitting element 18a (S7), the infrared light reflected on the laundry or the like is received by the infrared light receiving element 8b, and the output of the amplifier circuit 20 and the reference setting corresponding to the intensity of the light are received. The output of the circuit 21 is compared by the comparison circuit 22, and the output level is stored again as the variable $ new on the RAM (S8). And this Θo
The comparison between ld and $ new is repeated for a period of 10 seconds.
If the same value is continuously obtained for the minutes, the presence / absence determination timer times out (S10), and the last stored $ new
Is stored in the RAM as the result of the presence / absence determination of the matter to be dried (S1).
1).

Next, if $ old is different from $ new and the values are different (S9), the 1 minute presence / absence determination timer is restarted (S12), and the presence / absence determination limit timer is checked (S13). If the presence / absence determination limit timer has not timed out, wait 10 seconds again (S4, S5), assign $ new to $ old (S6), and then drive the light emitting circuit 19 to activate the infrared light emitting element 1
An infrared ray is emitted from the light receiving element 8a (S7), the infrared ray reflected on the laundry or the like is received by the infrared light receiving element 8b, and the output of the amplifier circuit 20 and the output of the reference setting circuit 21 corresponding to the intensity of the light are compared. 22 and the output level is stored again as a variable $ new on the RAM (S8). Then, if the value is the same after comparing $ old and $ new again, the above-described operation is performed and the dry matter presence / absence determination result is updated to the last stored $ new, but again $ old and $ new are different. If 1
The minute presence timer is restarted (S12) and the limit timer is repeatedly checked (S1).
3) If 有無 old and Θnew do not become the same value continuously for one minute and the presence / absence determination limit timer is typed up (S13), the detection level of the infrared sensor 8 is not stable due to disturbance noise. It is determined that it is not possible to determine the presence or absence of the dried material, and the process ends without updating the result of determining the presence or absence of the dried material.

As described above, if the laundry has not yet been taken in (there is an object to be dried), the RAM of the control unit 28
The dried object presence / absence determination result defined above becomes Hi, and when the laundry is already taken in and the dried object is gone, the dried object presence / absence determination result defined on the RAM of the control unit 28 is changed to Hi. It becomes Lo, and the presence or absence of the object to be dried is determined.

FIG. 7 shows a process for storing the level of the object to be dried, in which the average value of the detection signal levels from the object detecting means at the start of the drying operation and each time the amount of ventilation changes is stored as the level to be the object to be dried. This will be described with reference to FIG.

When the process for storing the level of the object to be dried is started, the control unit 28 sets a circulation fan set rotation speed change flag which is set when the set rotation speed is changed in the process of controlling the rotation speed of the circulation fan. Is checked (S1). If the set rotation speed change flag is 0, the process is terminated without doing anything. If the set rotation speed change flag is 1, after clearing the set rotation speed change flag (S2), it is checked whether the current circulation fan set rotation speed is the rotation speed at the start of the drying operation (S3). If it is the rotation speed at the start of operation, the variable m stored in the RAM of the control unit 28 is cleared to 0 (S4). . Next, the control unit 28
Clears the variable n stored in the RAM of the CPU to 0 (S
5).

Then, a one second timer is started (S
6) When the time is up (S7), the light emitting circuit 19 is driven to emit infrared light from the infrared light emitting element 8a (S8).
The infrared light reflected by the object to be dried such as laundry is received by the infrared light receiving element 8b, and a signal output from the infrared light receiving element according to the intensity of the reflected light is amplified by the amplifier circuit 2.
0, and outputs the output of the amplifier circuit 20 to the control unit 28.
Stored as a variable theta ₀ on the RAM (S9). Then, the variable n on the RAM of the control unit 28 is incremented by one (S10), and it is determined whether or not the variable n becomes 10 or more (S11). Therefore, if the variable n is less than 10, 1 again
The second timer is started (S6), and after waiting for the time to elapse (S7), the light emitting circuit 19 is driven to emit infrared light from the infrared light emitting element 18a (S8). And again the infrared has been reflected when the laundry or the like received by the infrared light receiving element 8b, and stores the output of the amplifier circuit 20 corresponding to the intensity of the light as a variable theta ₁ on RAM (S
9).

The above operation is repeated 10 times and the variable n
Becomes 10 or more (S11), the variables θ _{0 to} θ
It calculates the average value theta ₀ to _n-1 (S12), followed by one increment to the variable m by (S13). Substituting theta ₀ determined next theta (S14), and stores in the RAM of the control section 28 as a material to be dried there level (S1
5), from the level Θ with the material to be dried to ΔΘ (for example, 5
The value obtained by subtracting 0) is output to the reference setting circuit 21 and set as the level at which the object to be dried has disappeared (S16). At this time, the control unit 28 sets the dry matter presence / absence determination result defined as a variable on the RAM to be present (S17), and once ends the dry matter present level storage processing.

Next, when the process for storing the level of the object to be dried is started again, the control unit 28 checks the circulating fan set rotational speed change flag. If the flag is 1, (S1) clears the set rotational speed change flag. S2) It is checked whether the current rotation speed of the circulation fan is the rotation speed at the start of the drying operation (S3). If the rotation speed is not the rotation speed at the start of the operation, the process proceeds to the next step without doing anything. The stored variable n is cleared to 0 (S5).

Then, the 1-second timer is started (S
6) When the time is up (S7), the light emitting circuit 19 is driven to emit infrared light from the infrared light emitting element 8a (S8).
The infrared light reflected by the object to be dried such as laundry is received by the infrared light receiving element 8b, and a signal output from the infrared light receiving element according to the intensity of the reflected light is amplified by the amplifier circuit 2.
0, and outputs the output of the amplifier circuit 20 to the control unit 28.
Stored as a variable theta ₀ on the RAM (S9). Then, the variable n on the RAM of the control unit 28 is incremented by one (S10), and it is determined whether or not the variable n becomes 10 or more (S11). Therefore, if the variable n is less than 10, 1 again
The second timer is started (S6), and after waiting for the time to elapse (S7), the light emitting circuit 19 is driven to emit infrared light from the infrared light emitting element 18a (S8). And again the infrared has been reflected when the laundry or the like received by the infrared light receiving element 8b, and stores the output of the amplifier circuit 20 corresponding to the intensity of the light as a variable theta ₁ on RAM (S
9).

The above operation is repeated 10 times, and when the variable n becomes 10 or more (S11), the variable θ ₀
Calculates the average value theta ₁ to ~θ _n-1 (S12), followed by one increment to the variable m by (S13). Next, the average value の of the obtained Θ ₀ and Θ ₁ is calculated (S 14), and is stored in the RAM of the control unit 28 as the level with the object to be dried (S 15). A value obtained by subtracting (for example, 50) is output to the reference setting circuit 21 and set as a level at which the object to be dried has disappeared (S).
16). At this time, the control unit 28 sets the dry matter presence / absence determination result defined as a variable on the RAM to be present (S17), and terminates the dry matter present level storage processing again.

By repeating the above operation,
The average value of the detection level of the infrared sensor 8 at the start of the drying operation and the detection level of the infrared sensor each time the circulating air volume is switched is stored as a level indicating the presence of the object to be dried. Can be determined.

Next, the operation of shifting to the drying operation after detecting a decrease in temperature without immediately shifting to the ventilation operation immediately after the drying operation will be described with reference to the flowchart shown in FIG.

When the user presses the dry / dry operation switch 16c (S1), the information is transmitted to the control device 7 through a communication line (not shown). Circulating fan drive circuit 23, ventilation fan drive circuit 24, heater drive circuit 2
5, the drive of the circulation fan 2 is controlled through the circulation fan motor 3, the drive of the ventilation fan 4 and the drive of the heater 6 are controlled through the ventilation fan motor 5, and the operation unit 15 turns on the dry and moisture proof operation LED 17c (S2). And
After performing the level storage processing with the object to be dried (S
3), minus switch 16g and plus switch 1
When the operation time set by 6h elapses (S4),
The control unit 28 starts a sensor abnormality timer for detecting abnormality of the infrared sensor (S5), and performs the above-described dried object presence / absence determination processing to detect the presence / absence of a dried object such as laundry (S6).

If it is determined that there is no material to be dried (S7), the buzzer of the operation unit 15 sounds to notify the user of the end of the drying operation (S8), and at the same time, turns off the drying and moisture-proof LED 17c. At the same time, the driving of the ventilation fan motor 5, the ventilation fan 4, and the heater 6 is stopped by the ventilation fan driving circuit 24 and the heater driving circuit 25 (S9), and after 10 seconds have passed (S10), the circulation fan driving circuit 23 Then, the driving of the circulation fan 2 is stopped through Step 3 (S11).

When it is determined that there is an object to be dried (S7), the buzzer of the operation section 15 sounds to notify the user of the end of the drying operation, and at the same time, to dry the moisture-proof LED.
17c is turned off, the ventilation fan drive circuit 24 and the heater drive circuit 25 stop driving the ventilation fan motor 5, ventilation fan 4 and energizing the heater 6 (S1).
2) After a further 10 seconds have elapsed (S13), the circulation fan drive circuit 23 stops driving the circulation fan motor 3 and the circulation fan 2 (S14). Thereafter, the control unit 28 determines whether or not the detected temperature of the thermistor 9 has become 30 ° C. or lower via the thermistor reading circuit 27 (S15).
If the following conditions are not satisfied, the process for determining the presence / absence of the object to be dried is continued while the drive of the circulation fan 2 and the ventilation fan 3 and the energization of the heater 4 are stopped (S16), and the absence of the object to be dried is detected. (S17), it is determined that the laundry has been taken in by the user, and the moisture-proof operation is stopped as it is.

Next, when the thermistor 9 detects a temperature of 30 ° C. or lower (S15), the drying / moisture-proof LED 17c of the operation section 15 flashes to notify the user that the drying operation for preventing the laundry from getting wet has started. At the same time, the control unit 28 drives the circulation fan motor 3 and the circulation fan 2 by the circulation fan drive circuit 23, the ventilation fan drive circuit 24 and the heater drive circuit 25, drives the ventilation fan motor 5 and the ventilation fan 4, and controls the heater 6. Power is supplied (S18) to prevent the laundry from getting wet again. Thereafter, when the temperature detected by the thermistor 9 becomes 40 ° C. or higher (S1)
9) The buzzer of the operation unit 15 sounds again to inform the user of the timing to take in the laundry,
Turn off the dry moisture-proof LED 17c and turn on the ventilation fan drive circuit 2.
The drive of the ventilation fan motor 5 and the ventilation fan 4 and the energization of the heater 6 are stopped by the heater 4 and the heater drive circuit 25 (S12).
Is stopped (S14).

Further, when the temperature detected by the thermistor 9 is 4
Before detecting the temperature of 0 ° C. or higher, if it is detected that the object to be dried has disappeared (S21) by the above-described process for determining the object to be dried (S20), it is determined that the laundry has been taken in, and the operation unit 15 is dried. While turning off the moisture-proof LED 17c,
The drive of the ventilation fan motor 5 and the ventilation fan 4 is stopped by the ventilation fan drive circuit 24 and the heater drive circuit 25, and the energization of the heater 4 is stopped (S9). After 10 seconds have passed (S10), the circulation fan drive circuit 23 The driving of the circulation fan 2 is stopped through the circulation fan motor 3 (S11). The temperature detected by the thermistor 9 is 40 ° C.
If the above is not detected, and the presence of the object to be dried is still detected (S21) in the above-described presence / absence determination of the object to be dried (S21), and the sensor abnormality timer times up (S22), the control unit 28 It is determined that the infrared sensor 8 has an abnormality, and a code indicating the abnormality of the infrared sensor is displayed on the display unit 18 of the operation unit 15 (S23).
7c is turned off, the circulation fan 2 and the ventilation fan 3
Is stopped and the power supply to the heater 4 is stopped (S9, S1).
0, S11).

FIG. 9 is a cross-sectional view of a bathroom ventilating / drying device for controlling moisture-proof operation by the humidity sensor of the present invention, FIG. 10 is a schematic configuration diagram of the inside of the control device, and FIG. It is a control flowchart of a moisture-proof operation performed.

As shown in FIG. 9, the bathroom ventilation / drying device
A circulating fan motor 3 having a circulating fan 2 for sucking air in the bathroom from an air inlet 10 and blowing out warm air from the circulating port 11 into the bathroom through a circulating air guide plate 13 and a heater 6, and sucks air in the bathroom. A ventilation fan motor 5 to which a ventilation fan 4 for exhausting air from an exhaust port 12 to the outside through an air guide plate 14 for intake and ventilation through a port 10; an infrared light emitting element 8a; and infrared light output from the infrared light emitting element 8a. Infrared light receiving element 8 for receiving reflected light
b, an infrared sensor 8 for detecting the presence or absence of an object to be dried such as laundry in the bathroom, an intake port 10 and a ventilation fan 4
A humidity sensor 29 attached to the ventilation air guide plate 14 and detecting the humidity of air sucked from the bathroom.
And a control device 7 for controlling the circulation fan motor 3, the ventilation fan motor 5, the heater 6, the infrared sensor 8, and the humidity sensor 29. And an operation unit 15 similar to that of FIG.

As shown in FIG. 10, inside the control device 7, a circulation fan drive circuit 23 for driving the circulation fan motor 3, a ventilation fan drive circuit 24 for driving the ventilation fan motor 5, and a heater 6 Heater drive circuit 25
And a light emitting circuit 19 connected to an infrared light emitting element 8a constituting an infrared sensor 8 for detecting the presence or absence of an object to be dried such as laundry in the bathroom, and light emitted from the infrared light emitting element 8a. An amplification circuit 20 connected to the infrared light receiving element 8b for receiving the reflected light of the infrared light and amplifying the signal output from the infrared light receiving element 8b in accordance with the intensity of the reflected light; A reference setting circuit 21 to be set, a comparison circuit 22 that compares the output of the amplifier circuit 20 with the output of the reference circuit 21 to detect the presence or absence of an object to be dried, and a humidity sensor that detects the humidity of the air sucked from the bathroom. A humidity sensor reading circuit 30 connected to 29 and a communication circuit 26 for communicating with the operation unit are connected to a control unit 28 constituted by a microcomputer or the like.

In the above configuration, as shown in FIG.
When the user presses the dry / dry operation switch 16c of the operation unit 15 (S1), the information is transmitted to the control device 7 through a communication line (not shown), and the control unit 28 including a microcomputer built in the control device 7 according to the instruction. Is a circulation fan drive circuit 23, a ventilation fan drive circuit 24, a heater drive circuit 2
5, the driving of the circulation fan 2 connected to the circulation fan motor 3, the ventilation fan 4 connected to the ventilation fan motor 5, and the heater 6 are controlled, and the operation unit 15 turns on the drying and moisture proof operation LED 17c (S2). . Further, at this time, the drying object presence level serving as a reference is stored by the above-described drying object presence level storage process (S3). When the operation time set by the minus switch 16g and the plus switch 16h elapses (S4), the control unit 22
Starts a sensor abnormality timer for detecting abnormality of the infrared sensor (S5), and detects the presence or absence of an object to be dried such as laundry by the above-described drying object presence / absence determination processing (S6).

If it is determined that there is no material to be dried (S7), the operation section 15 sounds a buzzer (S8) to notify the user of the end of the drying operation and, at the same time, turns off the drying and moisture-proof LED 17c. The control unit 28 stops driving of the ventilation fan motor 5, the ventilation fan 4, and the heater 6 by the ventilation fan drive circuit 24 and the heater drive circuit 25 (S
9) After 10 seconds have passed (S10), the circulation fan drive circuit 23 stops driving the circulation fan 2 through the circulation fan motor 3 (S11).

When it is determined that there is an object to be dried (S7), the operation section 15 sounds a buzzer to notify the user of the end of the drying operation, and at the same time, to dry the moisture-proof LED.
The control unit 28 stops the drive of the heater 6 by the heater drive circuit 25 (S12), and further flashes the lamp 17c for notifying that the moisture-proof operation for maintaining the dry state of the laundry is operating (S12). After a lapse of time (S13), the circulation fan drive circuit 23 stops the circulation fan 2 through the circulation fan motor 3 (S14), but continues to drive the ventilation fan 4 to prevent the laundry from getting wet again.

Thereafter, the control unit 28 determines whether or not the detected humidity of the humidity sensor 29 is 60% or more via the humidity sensor reading circuit 30 (S15). And the detection of the presence or absence of the object to be dried is continued by the above-described process for determining the object to be dried (S16), and when it is detected that the object to be dried has disappeared (S17), the user sets the laundry. Is determined, and the dry and moisture-proof LED 17 of the operation unit 15 is determined.
c is turned off (S18), the ventilation fan drive circuit 24 stops driving the ventilation fan 4 through the ventilation fan motor 5 (S19), and stops the moisture-proof operation for preventing the laundry from getting wet again. Further, when the sensor abnormality timer times out without detecting the absence of the object to be dried (S17), the control unit 28 determines that the infrared sensor 8 has an abnormality and displays it on the display unit 18 of the operation unit 15. A code indicating an infrared sensor abnormality is displayed (S21), and the dry and moisture-proof LE is displayed.
D17c is turned off, and the circulation fan drive circuit 2 is turned off.
3. Ventilation fan drive circuit 24 and heater drive circuit 25
As a result, the driving of the circulation fan 2 and the circulation fan motor 3, the ventilation fan 4 and the ventilation fan motor 5, and the energization of the heater 4 are stopped (S9, S10, S11).

Next, when the humidity sensor 29 detects 60% or more (S15), the control unit 28 drives the circulation fan motor 3 and the circulation fan 2 by the circulation fan drive circuit 23 and the heater drive circuit 25, and energizes the heater 6. (S2
2) Prevent the laundry from getting wet again. Thereafter, when the humidity detected by the humidity sensor 29 becomes 40% or less (S23), the operation unit 15 sounds the buzzer again and notifies the user of the timing to take in the laundry, and the control unit 2
8 stops the energization of the heater 6 by the heater drive circuit 25 (S12), and after a lapse of 10 seconds (S13), stops the drive of the circulation fan 2 through the circulation fan motor 3 by the circulation fan drive circuit 23 (S14).

Further, before the humidity detected by the humidity sensor 29 is detected to be 40% or less (S23), when it is detected that the object to be dried has disappeared (S24) by the above-described process for determining the presence or absence of the object to be dried (S25). It is determined that the laundry has been taken in by the user,
7c, the ventilation fan drive circuit 24 and the heater drive circuit 25 stop driving the ventilation fan motor 5 and the ventilation fan 4 and stop energizing the heater 4 (S9).
After 0 seconds have passed (S10), the circulation fan drive circuit 23 stops driving the circulation fan 2 through the circulation fan motor 3 (S11).

In the state where the detection humidity of the humidity sensor 29 is not detected below 40% (S23) and the presence of the object to be dried is detected by the above-described process of determining the presence or absence of the object to be dried (S24, S25), the sensor When the abnormality timer has timed up (S26), the control unit 28 determines that the infrared sensor 8 has an abnormality, displays a code indicating the infrared sensor abnormality on the display unit 18 of the operation unit 15 (S27), and sets the dry and moistureproof L.
The ED 17c is turned off and the circulation fan drive circuit 2 is turned off.
3. Ventilation fan drive circuit 24 and heater drive circuit 25
As a result, the driving of the circulation fan 2 and the circulation fan motor 3, the ventilation fan 4 and the ventilation fan motor 5, and the energization of the heater 4 are stopped (S9, S10, S11).

Next, a description will be given of the operation of shifting to the drying operation again after detecting the rise in humidity, without immediately following the ventilation operation, immediately after the drying operation, with reference to the flowchart shown in FIG.

When the user presses the drying / moisture-proof operation switch 16c (S1), the information is transmitted to the controller 7 through a communication line (not shown), and the controller 28 including the microcomputer built in the controller 7 according to the instruction, Circulating fan drive circuit 23, ventilation fan drive circuit 24, heater drive circuit 2
5, the drive of the circulation fan 2 is controlled through the circulation fan motor 3, the drive of the ventilation fan 4 and the drive of the heater 6 are controlled through the ventilation fan motor 5, and the operation unit 15 turns on the dry and moisture proof operation LED 17c (S2). And
After performing the level storage processing with the object to be dried (S
3), minus switch 16g and plus switch 1
When the operation time set by 6h elapses (S4),
The control unit 28 starts a sensor abnormality timer for detecting abnormality of the infrared sensor (S5), and performs the above-described dried object presence / absence determination processing to detect the presence / absence of a dried object such as laundry (S6).

When it is determined that there is no material to be dried (S7), the buzzer of the operation unit 15 sounds to notify the user of the end of the drying operation (S8), and at the same time, turns off the drying and moisture-proof LED 17c. At the same time, the driving of the ventilation fan motor 5, the ventilation fan 4, and the heater 6 is stopped by the ventilation fan driving circuit 24 and the heater driving circuit 25 (S9), and after 10 seconds have passed (S10), the circulation fan driving circuit 23 The driving of the circulation fan 2 is stopped through the step 3 (S11).

When it is determined that there is an object to be dried (S7), the buzzer of the operation unit 15 is sounded to notify the user of the end of the drying operation, and at the same time, the drying and moistureproof LED is used.
17c is turned off, the ventilation fan drive circuit 24 and the heater drive circuit 25 stop driving the ventilation fan motor 5, ventilation fan 4 and energizing the heater 6 (S1).
2) After a further 10 seconds have elapsed (S13), the circulation fan drive circuit 23 stops driving the circulation fan motor 3 and the circulation fan 2 (S14). Thereafter, the control unit 28 determines whether or not the humidity detected by the humidity sensor 29 has reached 60% or more via the humidity sensor reading circuit 30 (S15).
If the value does not exceed%, the process for determining the presence / absence of the object to be dried is continued while the driving of the circulation fan 2 and the ventilation fan 3 and the energization of the heater 4 are stopped (S16), and it is detected that the object to be dried has disappeared. In this case (S17), it is determined that the laundry has been taken in by the user, and the moisture-proof operation is stopped as it is.

Next, when the humidity sensor 29 detects 60% or more (S15), the dry moistureproof LED 17c of the operation unit 15
Blinks to notify the user that the drying operation for preventing the laundry from getting wet has started, and the control unit 28 controls the circulation fan drive circuit 23, the ventilation fan drive circuit 24, and the heater drive circuit 25 to control the circulation fan. The motor 3 and the circulation fan 2 are driven, the ventilation fan motor 5 and the ventilation fan 4 are driven, and the heater 6 is energized (S18).
This prevents the laundry from getting wet again. Thereafter, when the detected humidity of the humidity sensor 29 becomes 40% or less (S
19) The buzzer of the operation unit 15 is sounded again to inform the user of the timing to take in the laundry, the drying and moisture-proof LED 17c is turned off, and the ventilation fan motor 5 and the heater driving circuit 25 are used to turn off the ventilation fan motor 5. Then, the drive of the ventilation fan 4 and the energization of the heater 6 are stopped (S12), and after a lapse of 10 seconds (S13), the drive of the circulation fan 2 is stopped by the circulation fan drive circuit 23 through the circulation fan 3 (S14).

Further, before the humidity detected by the humidity sensor 29 is detected to be 40% or less, if it is detected that the object to be dried has disappeared (S20) by the above-described process of determining the presence or absence of the object to be dried (S21), Is determined to have been imported,
While turning off the drying and moisture-proof LED 17c of the operation unit 15, the ventilation fan driving circuit 24 and the heater driving circuit 25
The drive of the ventilation fan motor 5 and the ventilation fan 3 is stopped, and the energization of the heater 4 is stopped (S9).
After 0 seconds have passed (S10), the circulation fan drive circuit 23 stops driving the circulation fan 2 through the circulation fan motor 3 (S11). Further, in a state where the detection humidity of the humidity sensor 29 is not detected to be 40% or less and the presence of the object to be dried is detected by the above-described process of determining the presence or absence of the object to be dried (S20), the sensor abnormality timer is activated. When the UP is performed (S22), the control unit 28 determines that the infrared sensor 8 is abnormal, displays a code indicating the infrared sensor abnormality on the display unit 18 of the operation unit 15 (S23), and sets the dry and moisture-proof LE.
While turning off D17c, the driving of the circulation fan 2 and the ventilation fan 3 and the energization of the heater 4 are stopped (S9, S9).
10, S11).

In the above description, the user is informed that the laundry is in operation to prevent the laundry from getting wet again by blinking the dry and moisture-proof LED 17c of the operation unit 15. However, in the case of the moisture-proof operation by the ventilation operation in which only the ventilation fan 4 and the ventilation fan motor 5 are driven, the drying moisture-proof LED 17c and the ventilation LED 17
d is blinked simultaneously, and in the case of the moisture-proof operation by the drying operation in which the circulation fan 2, the circulation fan motor 3, the ventilation fan 4, the ventilation fan motor 5 is driven, and the heater 6 is energized, the drying moisture-proof LED 17c and the heating LED 17e are turned on. Simultaneously blinking allows the user to be notified of a more detailed operation state. The display for distinguishing between the ventilation operation for moisture prevention and the drying operation is indicated by the above-mentioned drying moisture-proof LED 17c and the ventilation LED 17d or the heating LE.
Not only the simultaneous blinking of D17e but also the blinking of the dry and moisture-proof LED 17c and the display unit 18 may display a code C indicating a moisture-proof operation by a ventilation operation or a code H indicating a moisture-proof operation by a drying operation.

Next, a method of changing the value of the timer for detecting the abnormality of the infrared sensor will be described. If the drying unit switch 16b and the drying and moisture-proof switch 17c of the operation unit 15 are simultaneously pressed while the main unit is stopped or in the drying and moisture-proof operation, the information is transmitted to the control unit 7 through a communication line (not shown). The mode shifts to the sensor abnormality detection time change mode. Then, the infrared sensor abnormality detection time stored in the control unit 28 is transmitted to the operation unit 15 via the communication line, and the infrared sensor abnormality detection time is displayed on the display unit 18. When the minus switch 16g or the plus switch 16h is pressed in this state, the display unit 18
Infrared sensor abnormality detection time displayed in
The information is transmitted to the control device 7 through the communication line, and the infrared sensor abnormality detection time stored in the control unit 28 is changed. Note that the transition to the infrared sensor abnormality detection time change mode is not limited to the simultaneous pressing of the drying only switch 16b and the drying and moisture proof switch 16c, but may be a simultaneous pressing of the drying and moisture proof switch 16c and the reservation switch 16i. A dedicated switch may be provided, and the switch may be pressed.

FIG. 13 is a cross-sectional view of a bathroom ventilation / drying device of the present invention that performs moisture-proof operation control using a humidity sensor when an infrared sensor for detecting an object to be dried is not provided.
4, FIG. 15, and FIG. 16 are control flowcharts of the moisture-proof operation performed subsequent to the drying operation.

As shown in FIG. 13, the bathroom ventilation / drying apparatus includes a circulating fan 2 that draws air in the bathroom from an air inlet 10 and blows warm air from the circulation port 11 through a circulation air guide plate 13 and a heater 6 into the bathroom. , A ventilation fan motor 5 having a ventilation fan 4 for sucking air in the bathroom from the air inlet 10 and exhausting the air from the air outlet 12 to the outside through the ventilation air guide plate 14, A humidity sensor 29 attached to the ventilation air guide plate 14 between the mouth 10 and the ventilation fan 4 for detecting the humidity of the air sucked from the bathroom; a circulation fan motor 3; a ventilation fan motor 5; An apparatus main body 1 including a control device 7 for controlling the sensor 29, and an operation unit 15 similar to that in FIG. Are al configuration.

In the above configuration, as shown in FIG.
When the user presses the drying / humidification operation switch 16c of the operation unit 15 (S1), the information is transmitted to the control device 7 through a communication line (not shown), and the control device 7 follows the instruction and the circulation device connected to the circulation fan motor 3 The operation of the ventilation fan 4 and the heater 6 connected to the fan 2 and the ventilation fan motor 5 and the heater 6 is controlled, and the operation unit 15 turns on the drying / moisture-proof operation LED 17c (S2). The detection process 1 start flag is set. Then, the presence / absence of an object to be dried such as a laundry is detected by the object presence / absence detection processing 1 described later (S4). When the operation time set by the minus switch 16g and the plus switch 16h elapses (S5), the controller 7 starts a timer for forcibly terminating the moisture-proof operation when the laundry is forgotten to be taken (S6), If it is detected that there is no material to be dried (S7), the operation unit 15 sounds a buzzer (S8) and notifies the user that the drying operation has ended, and at the same time, turns off the drying and moisture-proof LED 17c, and the control device 7
Stops the driving of the ventilation fan motor 5, the ventilation fan 4, and the heater 6 (S9), and after 10 seconds have elapsed (S10), stops the driving of the circulation fan 2 through the circulation fan motor 3 by the circulation fan drive circuit 23 (S11). ).

When it is determined that there is an object to be dried (S7), the operating section 15 sounds a buzzer to notify the user of the end of the drying operation, and at the same time, to dry the moisture-proof LED.
17c is turned on and off to notify that the moisture-proof operation for maintaining the drying state of the laundry is in operation, and the control device 7 stops driving the heater 6 (S12), and furthermore, 10 seconds.
After a lapse of seconds (S13), the circulation fan 2 is stopped through the circulation fan motor 3 (S14), but the drive of the ventilation fan 4 is continued to prevent the laundry from getting wet again, and thereafter, the inside of the control device 7 is controlled. The start flag of the drying object presence / absence detection process 2 on the RAM is set (S15), and the presence / absence of a drying object such as laundry is detected by a drying object presence / absence detection process 2 described later (S16). Then, when it is detected that the object to be dried has run out (S17), it is determined that the laundry has been taken in by the user, and the dry and moisture proof LE of the operation unit 15 is determined.
D17c is turned off (S20), the driving of the ventilation fan 4 is stopped through the ventilation fan motor 5 (S21), and the moisture-proof operation for preventing the laundry from getting wet again is stopped. If the forced ending timer expires without detecting that there is no dried object (S17), the control device 7 determines that the laundry has not been taken in, and displays the moisture proof operation on the display unit 18 of the operation unit 15 (S17). Is displayed (S19), the drying and moisture-proof LED 17c is turned off, and the driving of the ventilation fan 4 and the ventilation fan motor 5 is stopped (S20, S21).

Next, the process 1 for detecting the presence / absence of an object to be dried is shown in FIG.
This will be described with reference to the flowchart shown in FIG. Control device 7
First, it is checked whether or not the start flag of the object to be dried detection process 1 is 1 (S1). If the flag is 1, this process is performed for the first time after the start of the drying operation. Set (S2), clear the reference humidity setting flag (S3), start a constant humidity timer for detecting whether or not the humidity has become constant (S4), and clear the start flag for the process for detecting the presence / absence of the object to be dried 1 (S4). S5).
If this process is performed for the second time after the start of the drying operation, the above-described process is not performed because the start flag of the process 1 for detecting the presence or absence of the object to be dried is 0 (S1). And the humidity sensor 2
9 is stored on the RAM as the current humidity (S
6). Thereafter, the reference humidity setting flag is checked (S
7) If it is 0, it is checked whether the current humidity stored on the RAM is 35% or less (S8), and if it is 35%
If it is higher, the constant humidity timer is started again (S1
0), if it is less than 35%, it is checked whether the current humidity is 30% or more (S9), and if less than 30%, the constant humidity timer is started again (S10), and if it is more than 30% If so, the process proceeds to the next process without performing anything. Here, the compared values of 35% or less and 30% or more are the saturation points of the humidity during the drying operation determined by the capacity of the bathroom ventilation / drying device. Then, it is continuously checked whether or not the constant humidity timer has become 0 (S11).
If not, nothing is performed and the process 1 for detecting the presence or absence of the object to be dried is terminated, and the above process is repeated. If the constant humidity timer is 0, the humidity has been constant for 10 minutes, so the current humidity at this time is stored in the RAM as the reference humidity (S12), and the reference humidity setting flag is set (S13). ), The dried object presence / absence detection processing 1 is temporarily ended. At this point, since the laundry has dried and the humidity is once constant, the process shifts to a process of detecting a change in humidity when the bathroom door is opened to take in the laundry.

When the process for detecting the presence / absence of the object to be dried 1 is started again, the start flag for the object 1 to be dried / detected 1 is 0 (S
1) The detected humidity of the humidity sensor 29 is stored as the current humidity on the RAM (S6), and it is checked whether or not the humidity has already become constant with the reference humidity setting flag (S7).
It is checked whether or not the object to be dried has been replaced by the object to be dried flag (S14). If the object to be dried flag is 0, it is determined that the object to be dried is already gone, and the process is terminated without doing anything. If the to-be-dried object flag is 1, it is checked whether or not the current humidity stored earlier is higher than the reference humidity by 5% or more (S15). If not, the bathroom door is opened. Since it is not opened, it is determined that the laundry has not been taken in, and the flag for the object to be dried is set (S16). If the reference humidity is 5
% If the humidity is high this time (S15), since the bathroom door is opened and the air inside and outside the bathroom is replaced,
It is determined that the laundry has been taken in, the dried object presence flag is cleared (S17), and the presence or absence of the dried object is determined.

If the drying operation time ends before the constant humidity timer reaches 0, the humidity is reduced from 35% to 30%.
%, And it can be determined that the object to be dried is not completely dried and the humidity is in the process of decreasing in humidity. Therefore, the object to be dried flag is set in the process immediately after the start of the drying operation. (S2), it is determined that there is an object to be dried.

Next, the process 2 for detecting the presence / absence of an object to be dried is shown in FIG.
This will be described with reference to the flowchart shown in FIG. Control device 7
First, it is checked whether or not the start flag 2 for detecting the presence or absence of the object to be dried is 1 (S1). If the flag is 1, this process is performed only after the moisture-proof operation is started. Is stored as the current humidity and the previous humidity on the RAM (S2), and the variables ΔRH and ΔRH0 to ΔRH5 set on the RAM to represent the amount of change in humidity are set to 0.
(S3, S4), and clears the start-of-dry-substance presence detection process 2 flag (S5). If this process is performed for the second time after the start of the moisture-proof operation, the above-described process is not performed because the start flag of the process 2 for detecting the presence or absence of the object to be dried is 0 (S1). Then, a 5-second timer is started (S
6) After 5 seconds have elapsed (S7), the variable Δ
Substituting RH4 into ΔRH5, substituting ΔRH3 into ΔRH4,
After substituting ΔRH0 for ΔRH1 (S8), the difference between the current humidity and the previous humidity is substituted for ΔRH0 (S9), and the current humidity is substituted for the previous humidity (S10). And ΔR
Add H0 to ΔRH5 and change the humidity for the last 30 seconds Δ
RH is obtained (S11). Then, it is checked whether this ΔRH is 5% or more (S12). If it is less than 5%, it is determined that the laundry is not taken in because the bathroom door has not been opened, and the dry object presence flag is set. If ΔRH is 5% or more, it is determined that the bathroom door has been opened and the laundry has been taken in, the dried object presence flag is cleared (S13), and the presence or absence of the dried object is determined. .

The flowchart described above FIG. 14, FIG.
FIG. 17 shows an example of a change in the detected humidity of the humidity sensor 29 when the control is performed according to FIG. 16 and an operation mode at that time. FIG. 17A shows that after the detection humidity of the humidity sensor 29 enters the range of 30% to 35% for 10 minutes or more during the drying operation, the door of the bathroom is opened and the object to be dried is taken in.
The air inside and outside the bathroom is replaced and the detected humidity changes by 7% in 30 seconds. Therefore, it is an example in which it is found that the matter to be dried has disappeared and the operation is immediately stopped after the drying operation is completed. (B) of FIG. 17 shows that the humidity is 30% to 3% during the drying operation.
Although it entered the range of 5% for more than 10 minutes, the bathroom door was not opened until the drying operation was completed.
After the drying operation is completed, a ventilation operation (first moisture-proof operation) is performed. After that, the door of the bathroom is opened to take in the material to be dried, the air inside and outside the bathroom is replaced, and the detected humidity becomes 5 in 30 seconds.
%, The ventilation operation (first moisture-proof operation) is terminated at that time, and the operation is stopped. FIG. 17 (c) shows that the humidity entered the range of 30% to 35% for 10 minutes or more during the drying operation, but the bathroom door was not opened until the drying operation was completed, and subsequent ventilation was performed. This is an example in which the operation was stopped by the forced termination timer because the bathroom door was not opened during the operation (first moisture-proof operation). FIG. 17D shows a case where the detected humidity continues to decrease without the detected humidity falling within the range of 30% to 35% during the drying operation. After the drying operation time, the ventilation operation (first moisture-proof operation) is performed. This is an example in which the ventilating operation (first moisture-proof operation) is stopped because the door to the bathroom is opened to take in the material to be dried during the operation, and the detected humidity increases by 5% or more in 30 seconds.

Next, during the drying operation, the humidity is increased from 30% to 35%.
The operation of continuing the drying operation even after the drying operation time ends when the humidity continues to fall without being within the range of% will be described with reference to the flowchart shown in FIG.

When the user presses the dry / dry operation switch 16c of the operation unit 15 (S1), the information is transmitted to the control device 7 through a communication line (not shown), and the control device 7 is connected to the circulation fan motor 3 according to the instruction. Circulation fan 2, ventilation fan 4 connected to ventilation fan motor 5,
The operation of the heater 6 is controlled, and the operation unit 15 performs the dry and moisture-proof operation L
The ED 17c is turned on (S2), and the RA
The start-of-dry matter detection processing 1 start flag on M is set. Then, the presence / absence of an object to be dried such as laundry is detected by the above-described object-to-be-dried detection processing 1 (S4). When the operation time set by the minus switch 16g and the plus switch 16h elapses (S5), the controller 7 starts a timer for forcibly terminating the moisture-proof operation when the laundry is forgotten to be taken (S6), If it is detected that there is no material to be dried (S7), the operation unit 15 sounds a buzzer (S8) and notifies the user that the drying operation has ended, and at the same time, turns off the drying and moisture-proof LED 17c, and the control device 7 Is a ventilation fan motor 5, a ventilation fan 4,
The drive of the heater 6 is stopped (S9), and after 10 seconds have passed (S10), the drive of the circulation fan 2 is stopped by the circulation fan drive circuit 23 through the circulation fan motor 3 (S1).
1).

When it is determined that there is an object to be dried (S7), it is determined that the moisture-proof operation for maintaining the drying state of the laundry is performed by blinking the drying moisture-proof LED 17c of the operation unit 15 first. The user is notified (S12), the presence / absence of the object to be dried is detected by the above-described object detection processing 1 (S13), and whether or not the humidity is constant is checked by a constant humidity timer (S14). If the constant humidity timer is not 0, the humidity has not reached the saturation point, and the drying operation is continued because the object to be dried is not completely dried, and it is continuously checked whether the humidity is not constant (S13, S14). If the timer for forcibly terminating the moisture-proof operation reaches 0 before the humidity becomes constant (S1).
5), it is determined that the laundry has been forgotten to be taken, the forced termination of the moisture-proof operation is displayed on the display unit 18 (S16), the energization of the heater 6 is stopped (S17), and after 10 seconds have passed (S18), the circulation fan motor is stopped. The driving of the circulation fan 2 is stopped through 3 (S19). And the dry and moisture-proof LED 17 of the operation unit 15
c is turned off (S20), and the ventilation fan motor 5 is turned off.
And the drive of the ventilation fan 4 is stopped (S21).

When the constant humidity timer reaches 0 at the end of the drying operation time or during the drying operation after the end of the drying operation time (S13, S14), the operation unit 15 sounds the buzzer and the drying operation is started. Notifying the user of the termination, the control device 7 stops driving the heater 6 (S2).
2) After a further 10 seconds have passed (S23), the circulation fan 2 is stopped through the circulation fan motor 3 (S24).
The driving of the ventilation fan 4 is continued to prevent the laundry from getting wet again, and the R
The start flag of the dried object presence / absence detection process 2 on the AM is set (S25), and the presence / absence of a dried object such as laundry is detected by the above-described dried object presence / absence detection process 2 (S26). Then, when it is detected that the object to be dried has disappeared (S27),
It is determined that the laundry has been taken in by the user, and the operation unit 1
5 is turned off (S20), and the drive of the ventilation fan 4 is stopped through the ventilation fan motor 5 (S20).
21) Stop the moisture-proof operation for preventing the laundry from getting wet again. Further, if the forced termination timer times out without detecting that there is no dried object (S27) (S27)
28), the control device 7 determines that the user has forgotten to take in the laundry,
A code indicating forced termination of the moisture-proof operation is displayed on the display unit 18 of the operation unit 15 (S29), the drying moisture-proof LED 17c is turned off, and the ventilation fan 4 and the ventilation fan motor 5 are turned off.
Is stopped (S20, S21).

The flowchart described above FIG. 18, FIG.
FIG. 19 shows an example of a change in the detected humidity of the humidity sensor 29 when the control is performed according to FIG. 16 and an operation mode at that time. FIG. 19A shows a case where the detected humidity does not fall within the range of 30% to 35% during the drying operation and the humidity continues to decrease. Even when the drying operation time is over, the drying operation (the fourth moisture-proof operation) is performed. ) Is continued and the detected humidity is 30%
When the vehicle enters the range from to 35% for 10 minutes, the operation is switched to the ventilation operation (first moisture-proof operation) at that time. Then, during this ventilation operation (first moisture proof operation), the door of the bathroom is opened to take in the material to be dried, and the detected humidity becomes 5 in 30 seconds.
This is an example in which the ventilation operation (first moisture-proof operation) was stopped because the temperature increased by more than%. FIG. 19B shows a case where the detected humidity continues to fall without the detected humidity falling within the range of 30% to 35% during the drying operation. ) Is continued and the detected humidity is 3
When entering the range of 0% to 35%, the operation was switched to the ventilation operation (first moisture-proof operation) at that time, but the bathroom door was then operated during this ventilation operation (first moisture-proof operation). This is an example in which the ventilation operation (first moisture-proof operation) is stopped because the forced termination timer, which has been counted from the end of the drying operation time, has expired because the detected humidity did not increase without opening the opening.

FIG. 20 is a cross-sectional view of a bathroom ventilation / drying apparatus of the present invention which performs moisture-proof operation control by a thermistor when it does not have an infrared sensor for detecting an object to be dried. FIGS. It is a control flowchart of presence or absence determination of a thing to be dried.

As shown in FIG. 20, the bathroom ventilation / drying device includes a circulation fan 2 that draws air from the bathroom through an air inlet 10 and blows warm air from the circulation port 11 through the circulation air guide plate 13 and the heater 6 into the bathroom. , A ventilation fan motor 5 having a ventilation fan 4 for sucking air in the bathroom from the air inlet 10 and exhausting the air from the air outlet 12 to the outside through the ventilation air guide plate 14, A thermistor 9 attached to the ventilation air guide plate 14 between the mouth 10 and the ventilation fan 4 for detecting the temperature of air sucked from the bathroom, a circulation fan motor 3, a ventilation fan motor 5, a heater 6, a thermistor 9
The main body 1 includes a control device 7 for controlling the operation of the apparatus, and an operation unit 15 similar to FIG. 2 connected to the control device 7 via a communication line (not shown).

In the above configuration, control is performed according to the flowchart shown in FIG. As shown in FIG. 21, in the drying object presence / absence detection processing 1, the control device 7 first checks whether the drying object presence / absence detection processing 1 start flag is 1 (S1). Since this process is performed for the first time after the start of operation, the drying object presence flag is set (S2), the detected temperature of the thermistor 9 is stored as the current temperature in the RAM (S3), and the drying object presence / absence detection process 1 is performed. The start flag is cleared (S4). If this process is performed for the second time after the start of the drying operation, the above-described process is not performed because the start flag of the process 1 for detecting the presence or absence of the object to be dried is 0 (S1). Then, the current temperature is substituted for the previous temperature on the RAM (S5), and the detected temperature of the thermistor 9 is stored again as the current temperature on the RAM (S6). Next, the drying object presence flag is checked (S7). If the flag is 1, the previously stored temperature is compared with the current temperature (S8). If the current temperature is not decreased by 3 ° C. or more, the drying object is present. The flag is set (S10). In addition, as a result of comparing the previous temperature with the current temperature (S8), if the current temperature has decreased by 3 ° C. or more, it is known that the door of the bathroom has been opened and the air inside and outside the bathroom has been exchanged. It is determined that the object to be dried is cleared (S9), and the presence or absence of the object to be dried is determined. Finally, five timers are started (S11), and after five seconds have elapsed, this processing is terminated (S1).
2).

Once the temperature decrease is detected and the drying object presence flag is cleared, the drying object presence flag is not set again until the drying operation time ends. If the object-to-be-dried flag is 0 (S7), the process ends without comparing the current temperature with the previous temperature.

Further, in the drying object presence / absence detection processing 2, FIG.
As shown in (1), the control device 7 first checks whether or not the drying object presence / absence detection processing 2 start flag is 1 (S
1) If it is 1, this process is performed only after the moisture-proof operation is started.
The variables ΔTH and ΔTH0 to ΔTH5 set on the RAM to represent the amount of change in temperature are set to 0 (S3, S3).
4), the drying object presence / absence detection processing 2 start flag is cleared (S5). If this process is performed for the second time after the start of the moisture-proof operation, the above-described process is not performed because the start flag of the process 2 for detecting the presence or absence of the object to be dried is 0 (S1). Then, a 5-second timer is started (S6), and after 5 seconds have elapsed (S6).
7), sequentially assigning the variable ΔTH4 on the RAM to ΔTH5,
After substituting ΔTH3 into ΔTH4,... Substituting ΔTH0 into ΔTH1 (S8), the difference between the previous temperature and the current temperature is represented by ΔTH.
0 (S9), and the current temperature is substituted for the previous temperature (S10). Then, ΔTH0 to ΔTH5 are added to obtain a temperature change ΔTH during the last 30 seconds (S11).
Then, it is checked whether this ΔTH is 3 ° C. or more (S
12) If the temperature is lower than 3 ° C., it is determined that laundry has not been taken in because the bathroom door has not been opened, and a flag indicating that there is an object to be dried is set (S14).
If the temperature is higher than or equal to ° C, it is determined that the bathroom door has been opened and the laundry has been taken in, and the drying object presence flag is cleared (S1).
3) The presence or absence of the object to be dried is determined.

The flowcharts described above, FIGS. 14 and 2
FIG. 2 shows an example of a change in the temperature detected by the thermistor 9 when the control is performed according to FIG.
3 is shown. In FIG. 23A, since the door of the bathroom is opened and the object to be dried is taken in during the drying operation, the air inside and outside the bathroom is replaced, and the detection temperature of the thermistor 9 is lowered by 3 ° C. or more. Therefore, it is an example in which it is found that the matter to be dried has disappeared and the operation is immediately stopped after the drying operation is completed. In FIG. 23B, since the bathroom door was not opened and the detected temperature did not decrease until the drying operation was completed, the ventilation operation (first moisture-proof operation) was performed after the drying operation was completed. Is being done. Then open the bathroom door and take in the material to be dried,
In this example, the air inside and outside the bathroom is replaced and the detected temperature drops by 3 ° C. or more in 30 seconds. In FIG. 23C, since the bathroom door was not opened and the detected temperature did not decrease until the drying operation was completed, the ventilation operation (first moisture-proof operation) was performed after the drying operation was completed. This is an example in which the operation has been started by the forced termination timer because the bathroom door was not opened even during the subsequent ventilation operation (first moisture-proof operation).

FIG. 24 is a cross-sectional view of a bathroom ventilation / drying apparatus of the present invention in which a humidity sensor and a thermistor perform moisture-proof operation control when an infrared sensor for detecting an object to be dried is not provided. FIG. 26 is a control flowchart for determining the presence / absence of an object to be dried.

As shown in FIG. 24, the bathroom ventilation / drying device includes a circulating fan 2 that draws air from the bathroom through an air inlet 10 and blows warm air from the circulation port 11 through the circulation air guide plate 13 and the heater 6 into the bathroom. , A ventilation fan motor 5 having a ventilation fan 4 for sucking air in the bathroom from the air inlet 10 and exhausting the air from the air outlet 12 to the outside through the ventilation air guide plate 14, A humidity sensor 29 attached to the ventilation air guide plate 14 between the mouth 10 and the ventilation fan 4 for detecting the humidity of the air sucked from the bathroom, a thermistor 9 for detecting the temperature, a circulation fan motor 3, a ventilation fan Motor 5, heater 6, thermistor 9, humidity sensor 29
The main body 1 includes a control device 7 for controlling the operation of the apparatus, and an operation unit 15 similar to FIG. 2 connected to the control device 7 via a communication line (not shown).

In the above configuration, control is performed according to the flowchart shown in FIG. As shown in FIG. 25, in the drying object presence / absence detection processing 1, the control device 7 first checks whether the start flag of the drying object presence / absence detection processing 1 is 1 (S1). Since this process is performed for the first time after the start of operation, the drying object presence flag is set, the reference humidity setting flag is cleared, the temperature drop flag is cleared, the humidity change flag is cleared (S2), and the detected temperature of the thermistor 9 is reduced. This time the temperature is stored in the RAM (S3), and a constant humidity timer for detecting whether or not the humidity has become constant is started (S3).
4), the start flag of the dried matter presence / absence detection processing 1 is cleared (S5). If this process is performed for the second time or later after the start of the drying operation, the start flag of the process 1 for detecting the presence / absence of the object to be dried is 0 (S1). After 5 seconds, the process proceeds to the next process (S7). Then, the detected humidity of the humidity sensor 29 is stored as the current humidity in the RAM (S8), the current temperature in the RAM is substituted for the previous temperature in the RAM (S9), and the detected temperature of the thermistor 9 is set as the current temperature. Remember (S1
0). Thereafter, the previous temperature is compared with the current temperature (S1
1) If the current temperature is lower than 3 ° C., a temperature lowering flag is set (S12), and if it is not lower than 3 ° C., nothing is performed. In this manner, if the temperature has dropped by at least 3 ° C. during the drying operation, the temperature drop flag is set.

Next, the reference humidity setting flag is checked (S
13) If it is 0, it is checked whether the current humidity stored on the RAM is 35% or less (S14).
If it is higher than 5%, the constant humidity timer is started again (S16).
Check if it is 0% or more (S15), and if it is 30%
If it is less than 1, the humidity constant timer is started again (S1).
6) If it is 30% or more, proceed to the next process without doing anything. . Subsequently, it is checked whether or not the constant humidity timer has become 0 (S17).
The humidity at this time was R
The reference humidity is stored on the AM (S18),
The reference humidity setting flag is set (S19). If the constant humidity timer is not 0, no processing is performed.

Then, the humidity change flag is checked (S23). At this point, since the humidity change flag is 0, the dry matter presence flag is set (S25), and the dry matter presence / absence detection processing 1 is temporarily terminated. . At this point, if the laundry has dried and the humidity is once constant, then the process moves to the process of detecting the change in humidity when the bathroom door is opened to take in the laundry, and if the humidity is still constant If not, the above processing is repeated.

When the process for detecting the presence / absence of the object to be dried 1 is started again, the start flag for the object 1 to be dried / detected 1 is 0 (S
1) After waiting for 5 seconds (S6, S7) Humidity sensor 2
9 is stored as the current humidity in the RAM (S
8), the current temperature is substituted for the previous temperature (S9), the detected temperature of the thermistor 9 is stored in the current temperature (S10), and a comparison process between the previous temperature and the current temperature is performed (S11, S1).
2) If the humidity is already constant in the above-described processing, the reference humidity setting flag is 1 (S13), so whether or not the current humidity stored earlier is higher than the reference humidity by 5% or more. (S20), if the humidity is higher than the reference humidity by 5% or more this time, it is determined that the laundry has been taken in because the bathroom door has been opened and the air outside and inside the bathroom has been replaced. A change flag is set (S22). If the reference humidity is not higher than 5%, it is checked whether the current humidity is lower than the reference humidity by 5% or more (S21). If the humidity is low by 5% or more this time, the door of the bathroom is opened and the air inside and outside the bathroom is exchanged, so that it is determined that the laundry has been taken in and the humidity change flag is set (S22). No processing is when there is no change of more than 5% relative humidity is not performed.

While the above-described processing is repeated, the humidity change flag is checked (S23). If the flag is 0, the flag indicating that there is a material to be dried is set (S25). Check the flag (S2
4) If 0, the object to be dried flag is set (S25). If 1, the object to be dried flag is cleared (S26). If there is a temperature drop as described above, the drying object presence flag is cleared. Otherwise, the drying object presence flag is set, and the presence or absence of the drying object is determined.

Further, in the drying object presence / absence detection processing 2, FIG.
As shown in (1), the control device 7 first checks whether or not the start flag 2 for detecting the presence / absence of the object to be dried is 1 (S1). Therefore, the detected humidity of the humidity sensor 29 is stored as the current humidity and the previous humidity on the RAM (S2),
The detected temperature of the thermistor 9 is stored as the current temperature and the previous temperature on the RAM (S3), and variables ΔRH, ΔRH0 to ΔRH set on the RAM to indicate the amount of change in humidity and temperature.
RH5 and ΔTH, ΔTH0 to ΔTH5 are set to 0 (S
4, S5), the humidity change flag and the temperature decrease flag are cleared (S6), and the drying object presence / absence detection processing 2 start flag is cleared (S7). If this process is the second or subsequent time from the start of the moisture-proof operation, the above-mentioned process is not performed because the start flag of the process 2 for detecting the presence or absence of the object to be dried is 0 (S
1). Then, a 5-second timer is started (S8).
When seconds elapse (S9), the variable ΔRH4 on the RAM is sequentially substituted for ΔRH5, ΔRH3 is substituted for ΔRH4,.
0 to ΔRH1, ΔTH4 to ΔTH5, ΔT
After substituting H3 into .DELTA.TH4,... Substituting .DELTA.TH0 into .DELTA.TH1 (S10), the difference between the current humidity and the previous humidity is calculated as .DELTA.RH0.
And the difference between the previous temperature and the current temperature is substituted into ΔTH0 (S11). Then, ΔRH0 to ΔRH5 are added to determine a change ΔRH in humidity for the last 30 seconds (S12), and ΔTH0 to ΔTH5 are added to obtain a change ΔTH in temperature for the last 30 seconds (S13). Further, the current humidity is substituted for the previous humidity, and the current temperature is substituted for the previous humidity (S14).

Then, it is checked whether or not the absolute value of ΔRH is 5% or more (S15). If it is 5% or more, a humidity change flag is set (S16), and if less than 5%, no processing is performed. Absent. Next, it is checked whether or not ΔTH is 3 ° C. or more (S17). If it is 3 ° C. or more, a temperature drop flag is set (S18), and if it is less than 3 ° C., no processing is performed. Subsequently, the humidity change flag is checked (S19). If it is 0, it is determined that the laundry is not taken in because the bathroom door is not opened, and the dry matter presence flag is set (S22). If it is 1, the temperature decrease flag is checked (S20). If it is 0, it is determined that the laundry is not taken in because the bathroom door is not opened, and the drying object presence flag is set (S2).
2) If this is also 1, it is determined that the bathroom door has been opened and the laundry has been taken in, the to-be-dried object flag is cleared (S21), and the presence or absence of the to-be-dried object is determined.

When the humidity does not become constant during the drying operation, the operation of continuing the drying operation even after the drying operation time has ended is controlled by the humidity detected by the humidity sensor 29 and the temperature detected by the thermistor 9. FIG. 18 and FIG.
5. It becomes possible by controlling according to the flowchart shown in FIG.

The above description relates only to one embodiment of the present invention, and does not mean that the present invention is limited only to the above content.

[0123]

As described above, the bathroom ventilation / drying apparatus of the present invention can be used in spite of the fact that there is no drying object such as laundry.
Since the operation for preventing the laundry from getting wet again after the drying operation is not performed, unnecessary consumption of energy can be prevented.

If the user takes in a dry object such as laundry during the operation for preventing the laundry which is subsequently carried out after the drying operation from being wet again, the operation is automatically stopped. Therefore, there is no need for the user to give an instruction to stop the operation, and a more convenient bathroom ventilation and drying apparatus can be provided.

Further, the operation state for preventing the laundry to be closed following the drying operation from being closed can be switched according to the state of the temperature and humidity of the air in the bathroom. Can be prevented from being consumed.

Further, since it is possible to determine whether or not laundry has been taken in based on the detection level of the object detecting means in a state where the laundry during the drying operation is dried, it is possible to detect a laundry pipe or the like. Since it is possible to prevent the laundry from being erroneously detected as being dried even though the laundry has been taken in, it is possible to further prevent unnecessary consumption of energy.

In addition, when there is an abnormality in the object detecting means, the operation for preventing the laundry, which is performed subsequent to the drying operation, from getting wet, can be automatically terminated. Can be prevented from being consumed.

[0128] Even when there is no object detecting means, it is possible to determine whether or not the laundry is taken in by the humidity detecting means and the temperature detecting means.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a bathroom ventilation / drying device according to the present invention.

FIG. 2 is a configuration diagram of an operation unit according to the present invention.

FIG. 3 is a configuration diagram of the inside of a control device according to the present invention.

FIG. 4 is a flowchart of a moisture-proof operation control in the present invention.

FIG. 5 is a flowchart of a process of storing a level of a material to be dried according to the present invention.

FIG. 6 is a flowchart of a process for determining the presence or absence of an object to be dried according to the present invention.

FIG. 7 is a flowchart of control for storing a dry matter presence level based on a detection level every time the circulating air volume changes in the present invention.

FIG. 8 is a flowchart of moisture-proof operation control based on temperature detection in the present invention.

FIG. 9 is a cross-sectional view of a bathroom ventilation / drying apparatus main body showing an embodiment of a humidity detection method according to the present invention.

FIG. 10 is an internal configuration diagram of a control device showing an embodiment of a humidity detection method according to the present invention.

FIG. 11 is a flowchart of a moisture-proof operation control based on humidity detection in the present invention.

FIG. 12 is a flowchart of a moisture-proof operation control based on humidity detection in the present invention.

FIG. 13 is a cross-sectional view of a bathroom ventilation / drying apparatus main body showing an embodiment in the case where there is no object detecting means in the present invention.

FIG. 14 is a flowchart of the moisture-proof operation control when there is no object detection means in the present invention.

FIG. 15 is a flowchart of control for determining the presence / absence of an object to be dried based on humidity detection in the present invention.

FIG. 16 is a flowchart of control for determining the presence / absence of an object to be dried by detecting humidity in the present invention.

FIG. 17 shows an example of a change in humidity and an operation mode at that time in the case where there is no object detection means in the present invention.

FIG. 18 is a flowchart of the moisture-proof operation control in the case where there is no object detection means in the present invention.

FIG. 19 shows an example of a change in humidity and an operation mode at that time when the object detection means is not provided in the present invention.

FIG. 20 is a transverse cross-sectional view of a bathroom ventilation / drying apparatus main body showing an embodiment having no object detecting means in the present invention.

FIG. 21 is a flowchart of control for determining the presence / absence of an object to be dried based on temperature detection according to the present invention.

FIG. 22 is a flowchart of control for determining the presence / absence of an object to be dried based on temperature detection according to the present invention.

FIG. 23 shows an example of a temperature change and an operation mode at that time when the object detection means is not provided in the present invention.

FIG. 24 is a cross-sectional view of a bathroom ventilation / drying apparatus main body showing an embodiment in the case where there is no object detecting means in the present invention.

FIG. 25 is a flowchart of control for determining the presence / absence of an object to be dried based on detection of humidity and temperature in the present invention.

FIG. 26 is a flowchart of control for determining the presence / absence of an object to be dried based on detection of humidity and temperature in the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bathroom ventilation dryer main body 2 ... Circulation fan, 3 ... Circulation fan motor 4 ... Ventilation fan, 5 ... Ventilation fan motor, 6 ... Heater,
7 ... Control device 8 ... Infrared sensor, 8a ... Infrared light emitting element, 8b ... Infrared light receiving element 9 ... Thermistor, 10 ... Intake port, 11 ... Circulation port, 12 ...
Exhaust port 13: circulation air guide plate, 14: ventilation air guide plate, 1
5. Operating part 16a-16i ... Switch, 17b-17f, 17i ...
LED, 18 display unit 19 sensor light emitting circuit, 20 amplifier circuit, 21 reference setting circuit, 22 comparison circuit 23 circulation fan drive circuit, 24 ventilation fan drive circuit, 25 heater drive circuit 26 communication Circuit, 27: Thermistor reading circuit, 28: Control unit 29: Humidity sensor, 30: Humidity sensor reading circuit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F26B 21/00 F26B 21/00 H 21/08 21/08 21/10 21/10 B 23/06 23 / 06 A

Claims (35)

[Claims] 1. A circulating ventilation means for sucking air in a bathroom and returning the air to the bathroom, an exhaust ventilation means for exhausting air from the bathroom to the outside of the bathroom, and returning to the bathroom by the circulating ventilation means. A device main body comprising heating means for heating air to be heated, control means for controlling the operation of the device main body, and object detecting means for detecting the presence or absence of an object to be dried such as laundry in the bathroom. Ventilation operation in which all or a part of the air sucked from the inside is exhausted to the outside of the bathroom by the exhaust ventilation means, and a part of the air sucked from the bathroom is heated by the heating means, and the bathroom is exhausted by the circulation ventilation means. In a bathroom ventilation / drying device capable of freely switching at least two of a drying operation in which the remaining air is exhausted outside the bathroom by the exhaust ventilation means, the ventilation after the drying operation is completed. It has a first moisture-proof operation function of performing the operation, the control means at the time when the drying operation is completed,
A bathroom ventilation / drying device, wherein the first moisture-proof operation is performed when the object detection means continuously detects an object to be dried for a predetermined first predetermined time. 2. The method according to claim 1, wherein the object detecting means does not detect the object to be dried continuously for a predetermined second predetermined time during the first moisture-proof operation. The bathroom ventilation / drying device according to claim 1, further comprising a function of terminating the moisture-proof operation. 3. A bathroom ventilation / drying device comprising a temperature detecting means for detecting a temperature of air in a bathroom between an intake port for sucking air in the bathroom and the exhaust ventilation means, wherein the first moisture-proof operation is performed. Subsequently, a second moisture-proof operation function for performing the drying operation is provided, and the control unit, when the temperature detection unit detects a predetermined first predetermined temperature or less during the first moisture-proof operation, The bathroom ventilation / drying apparatus according to claim 1, wherein the second moisture-proof operation is performed. 4. When the temperature detecting means detects a temperature equal to or higher than a second predetermined temperature set higher than the first predetermined temperature during the second moisture-proof operation, the control means sets the second temperature. The bathroom ventilation / drying apparatus according to claim 3, further comprising a function of switching from the moisture-proof operation to the first moisture-proof operation. 5. The control device according to claim 2, wherein the object detecting unit does not detect the object to be dried continuously for a second predetermined time during the second moisture-proof operation. 5. The bathroom ventilation / drying device according to claim 3, further comprising a function of terminating the moisture-proof operation. 6. A bathroom ventilation and drying apparatus comprising a humidity detecting means for detecting the humidity of air in a bathroom between an intake port for sucking air in the bathroom and the exhaust ventilation means, wherein the first moisture-proof operation is performed. Subsequently, a second moisture-proof operation function of performing the drying operation is provided, and the control unit, when the humidity detection unit detects a predetermined first predetermined humidity or more during the first moisture-proof operation, The bathroom ventilation / drying apparatus according to claim 1, wherein the second moisture-proof operation is performed. 7. When the humidity detecting means detects a second humidity lower than the first predetermined humidity which is lower than the first predetermined humidity during the second moisture proof operation, the control means controls the second humidity. The bathroom ventilation / drying device according to claim 6, further comprising a function of switching from the moisture-proof operation to the first moisture-proof operation. 8. The control means, when the object detecting means does not detect an object to be dried continuously for a predetermined second predetermined time during the second moisture-proof operation, The bathroom ventilation / drying apparatus according to claim 6, further comprising a function of terminating the moisture-proof operation. 9. A circulation ventilating means for sucking air in the bathroom and returning the air to the bathroom, an exhaust ventilation means for exhausting the air in the bathroom out of the bathroom, and returning to the bathroom by the circulation ventilation means. A main body comprising heating means for heating the air to be heated, a control means for controlling the operation of the main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. In a bathroom ventilation / drying apparatus including a temperature detecting means for detecting a temperature of air in a bathroom and an object detecting means for detecting the presence or absence of an object to be dried such as laundry in the bathroom, the drying operation is completed and the ventilation for circulation is completed. Means, a ventilation means for exhaust, after stopping the heating means, a third moisture-proof operation function of performing the drying operation again, the control means,
After completion of the drying operation, the temperature detected by the temperature detecting means detects a predetermined third temperature or less, and the object detecting means continuously detects the object to be dried for a predetermined first predetermined time. A bathroom ventilation / drying device that performs the third moisture proof operation when detected. 10. The method according to claim 6, wherein the control unit detects the fourth predetermined temperature which is higher than the third predetermined temperature during the third moisture proof operation. The bathroom ventilation / drying device according to claim 9, further comprising a function of terminating the third moisture proof operation. 11. The method according to claim 11, wherein the object detecting means does not detect the object to be dried continuously for a second predetermined time during the third moisture-proof operation. The bathroom ventilation / drying device according to claim 9, further comprising a function of terminating the moisture-proof operation. 12. A circulating ventilation means for sucking air in the bathroom and returning the air to the bathroom, an exhaust ventilation means for exhausting the air in the bathroom out of the bathroom, and returning to the bathroom by the circulating ventilation means. A main body comprising heating means for heating the air to be heated, a control means for controlling the operation of the main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. In a bathroom ventilation / drying apparatus including humidity detecting means for detecting humidity of air in a bathroom and object detecting means for detecting the presence or absence of an object to be dried such as laundry in the bathroom, the drying operation is completed and the ventilation for circulation is provided. means,
A third moisture-proof operation function for performing the drying operation again after stopping the exhaust ventilation unit and the heating unit is provided, and the control unit is configured such that after the drying operation is completed, the detection humidity of the humidity detection unit is set in advance. Detecting the object to be dried continuously for a first predetermined period of time, and performing the third moisture proof operation. Bathroom ventilation drying equipment. 13. The method according to claim 12, wherein the control unit detects the fourth predetermined humidity, which is set lower than the third predetermined humidity, during the third moisture-proof operation. The bathroom ventilation / drying device according to claim 12, further comprising a function of terminating the third moisture proof operation. 14. The control means, when the object detecting means does not detect an object to be dried continuously for a predetermined second predetermined time during the third moisture proof operation, The bathroom ventilation / drying apparatus according to claim 12, further comprising a function of terminating the moisture-proof operation. 15. The control means stores an average value of detection signal levels from the object detection means for a predetermined period of time from the start of the drying operation as an object to be dried level, and terminates the drying operation. A function for determining that the object to be dried has disappeared when the signal level from the object detecting means has decreased by a predetermined level from the level with the object to be dried during the first or third moisture proof operation. The bathroom ventilation / drying device according to claim 1, further comprising: 16. A bathroom ventilation / drying apparatus having a function of changing at least a ventilation amount of the circulation ventilation means stepwise as the operation time of the drying operation elapses, wherein the control means starts the drying operation. Read the detection signal level from the object detection means every time and the amount of ventilation changes, and store the average value as the level with dry matter,
At the end of the drying operation or during the first to third moisture-proof operations, when the signal level from the object detection unit has decreased by a predetermined level from the level with the object to be dried, the object to be dried has disappeared. The bathroom ventilation / drying device according to any one of claims 1 to 14, further comprising a determining function. 17. A ventilation means for sucking air in the bathroom and returning the air to the bathroom, a ventilation means for exhausting air in the bathroom to the outside of the bathroom, and a return to the bathroom by the ventilation means for circulation. A main body comprising heating means for heating the air to be heated, a control means for controlling the operation of the main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. A ventilation operation for detecting the humidity of the air in the bathroom; a ventilation operation for exhausting all or a part of the air sucked from the bathroom to the outside of the bathroom by the exhaust ventilation means; A bath capable of freely switching at least two of a drying operation in which the heating unit is heated by the heating means and returned into the bathroom by the circulation ventilation means, and the remaining air is exhausted out of the bathroom by the exhaust ventilation means. In the room ventilation drying device, a first moisture proof operation function of performing the ventilation operation after the drying operation is provided, wherein the control unit detects that the humidity detected by the humidity detection unit during the drying operation is equal to or longer than a third predetermined time After continuously within the range of the fifth predetermined humidity and the sixth predetermined humidity set lower than the fifth predetermined humidity, if the detected humidity of the humidity detecting means has increased by a predetermined value or more, the fifth In the case where the first moisture-proof operation is not performed and the humidity detected by the humidity detecting unit does not increase by a predetermined value or more, the first moisture-proof operation is performed when the drying operation is completed. Drying equipment. 18. The control unit, wherein during the drying operation, the humidity detected by the humidity detection unit continues for a third predetermined time or more and falls within a range between the fifth predetermined humidity and the sixth predetermined humidity. 18. The bathroom ventilation / drying apparatus according to claim 17, wherein when the humidity continues to decrease without entering, the first moisture-proof operation is performed when the drying operation is completed. 19. A controller according to claim 19, further comprising a fourth moisture-proof operation function for continuing the drying operation even after the drying operation time has expired, wherein the control unit controls the humidity detection unit to perform a third operation during the drying operation. The fourth moisture-proof operation is performed when the humidity continues to decrease without falling within the range of the fifth predetermined humidity and the sixth predetermined humidity for a predetermined time or more. 18. The bathroom ventilation / drying apparatus according to 17. 20. The control unit, wherein, during the fourth moisture proof operation, the humidity detected by the humidity detecting unit continues for a third predetermined time or longer and the difference between the fifth predetermined humidity and the sixth predetermined humidity is maintained. 20. The bathroom ventilation / drying device according to claim 19, wherein the first moisture proof operation is performed when the temperature is within the range. 21. The control unit, when the detected humidity of the humidity detecting unit has increased by a predetermined value or more during a fourth predetermined time during the first moisture-proof operation, 21. The bathroom ventilation / drying device according to claim 17, further comprising a function of terminating the moisture-proof operation. 22. Circulating ventilation means for sucking air in the bathroom and returning the air to the bathroom, exhaust ventilation means for exhausting air from the bathroom out of the bathroom, and returning to the bathroom by the circulation ventilation means. A main body comprising heating means for heating the air to be heated, a control means for controlling the operation of the main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. A ventilation detecting means for detecting a temperature of air in the bathroom; a ventilating operation for exhausting all or a part of the air sucked from the bathroom to the outside of the bathroom by the exhaust ventilation means; A bath capable of freely switching at least two of a drying operation in which the heating unit is heated by the heating means and returned into the bathroom by the circulation ventilation means, and the remaining air is exhausted out of the bathroom by the exhaust ventilation means. In the room ventilation drying device, a first moisture-proof operation function of performing the ventilation operation after the drying operation is provided, and the control unit is configured to perform the drying operation when the temperature detected by the temperature detection unit decreases by a predetermined value or more. The first moisture-proof operation is not performed, and when the temperature detected by the temperature detecting unit does not decrease by a predetermined value or more, the first moisture-proof operation is performed when the drying operation is completed. Bathroom ventilation dryer. 23. The control unit, when the temperature detected by the temperature detection unit decreases by a predetermined value or more during a predetermined fourth predetermined time during the first moisture proof operation, 23. The bathroom ventilation / drying device according to claim 22, further comprising a function of terminating the moisture-proof operation. 24. Circulating ventilation means for sucking air in the bathroom and returning the air to the bathroom, exhaust ventilation means for exhausting air in the bathroom out of the bathroom, and returning to the bathroom by the circulation ventilation means. A main body comprising heating means for heating the air to be heated, a control means for controlling the operation of the main body, and an air inlet for sucking air in the bathroom and the exhaust ventilation means. It is provided with humidity detecting means for detecting the humidity of the air in the bathroom and temperature detecting means for detecting the temperature of the air in the bathroom, and all or a part of the air sucked from the bathroom is taken out of the bathroom by the exhaust ventilation means. Ventilation operation for exhausting, and drying in which a part of the air sucked from the bathroom is heated by the heating means and returned to the bathroom by the circulation ventilation means, and the remaining air is exhausted out of the bathroom by the exhaust ventilation means. In a bathroom ventilation drying device capable of freely switching at least two of the operations, the bathroom ventilation drying device further includes a first moisture proof operation function of performing the ventilation operation after the drying operation is completed, and the control unit performs the humidity detection unit during the drying operation. After the detected humidity is within the range of the fifth predetermined humidity and the sixth predetermined humidity continuously for a third predetermined time or more, while the detected humidity of the humidity detecting means changes by a predetermined value or more, If the detected temperature of the temperature detecting means has decreased by a predetermined value or more, the first moisture-proof operation is not performed, and if the detected humidity of the humidity detecting means has not changed by a predetermined value or more, or the detected temperature of the temperature detecting means has not changed. The bathroom ventilation / drying device, wherein the first moisture proof operation is performed when the drying operation is completed when the temperature does not decrease by a predetermined value or more. 25. The control unit, wherein during the drying operation, the humidity detected by the humidity detecting unit continues for a third predetermined time or more and falls within a range between the fifth predetermined humidity and the sixth predetermined humidity. 25. The bathroom ventilation / drying apparatus according to claim 24, wherein the first moisture-proof operation is performed when the humidity continues to fall without entering. 26. A fourth moisture proof operation function for continuing the drying operation even after the drying operation time has ended, wherein the control means controls the detection humidity of the humidity detection means during the drying operation. If the humidity continues to decrease without falling within the range of the fifth predetermined humidity and the sixth predetermined humidity for a third predetermined time or more, after the drying operation time ends, the fourth 25. The bathroom ventilation / drying device according to claim 24, wherein the moisture-proof operation is performed. 27. The control unit, wherein, during the fourth moisture proof operation, the humidity detected by the humidity detection unit continues for a third predetermined time or more and the fifth predetermined humidity and the sixth predetermined humidity are maintained. The bathroom ventilation / drying apparatus according to claim 26, wherein the first moisture-proof operation is performed when the temperature is within the range. 28. The control device according to claim 23, wherein, during the first moisture-proof operation, the temperature detected by the temperature detecting unit decreases by a predetermined value or more during a predetermined fourth predetermined time, and the humidity detecting unit 28. The bathroom ventilation / drying device according to claim 24, further comprising a function of terminating the first moisture proof operation when the detected humidity of the first battery changes by a predetermined value or more. 29. A bathroom ventilation / drying apparatus having an operation section for transmitting an operation command of the apparatus main body to the control means, wherein the operation section performs the first moisture-proof operation and the second moisture-proof operation after the drying operation. Operation, a third moisture-proof operation, a moisture-proof operation mode including at least one of the fourth moisture-proof operation, and a single mode in which the moisture-proof operation is not performed after the drying operation. The bathroom ventilation / drying apparatus according to any one of claims 1 to 28, wherein: 30. The bathroom ventilation / drying apparatus according to claim 1, further comprising a function of displaying on the operation unit that the moisture proof operation mode is being performed. 31. The first moisture-proof operation on the operation unit,
31. The bathroom ventilation / drying device according to claim 1, further comprising a function of displaying each of a second moisture proof operation, a third moisture proof operation, and a fourth moisture proof operation. 32. The controller according to claim 28, wherein the moisture-proof operation including at least one of the first moisture-proof operation, the second moisture-proof operation, the third moisture-proof operation, and the fourth moisture-proof operation is performed after the end of the drying operation. The bathroom ventilation / drying apparatus according to any one of claims 1 to 31, further comprising a function of terminating the moisture-proof operation when a predetermined time has elapsed. 33. A bathroom ventilation / drying apparatus having an operation section for transmitting an operation command of the apparatus main body to the control means, wherein the operation section includes the first moisture-proof operation, the second moisture-proof operation, and a third moisture-proof operation. 33. A function of arbitrarily changing the predetermined time until the end of the moisture-proof operation including at least one of the moisture-proof operation and the fourth moisture-proof operation.
A bathroom ventilation dryer as described. 34. The operation unit, wherein the moisture-proof operation including at least one of the first moisture-proof operation, the second moisture-proof operation, the third moisture-proof operation, and the fourth moisture-proof operation is continuously completed for the predetermined time. 34. A function for displaying the end of the moisture-proof operation in the event that the operation is completed.
A bathroom ventilation dryer as described. 35. At least one of the operation unit and the control unit is provided with a sound notification unit, and when the drying operation, the second moisture-proof operation, the third moisture-proof operation, and the fourth moisture-proof operation are completed. 35. The bathroom ventilation / drying device according to claim 1, further comprising a function of notifying by a sound.