JPH10170050A - Bath room ventilation drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a drying time by a method wherein the quantity of heat required for drying clothes and a thermal load in a bath room as well as an appropriate ventilation amount are regulated. SOLUTION: Within a main body 1 are installed a circulation fan 3, a heater 10 and a ventilation fan 13 which is separated by a partition member 12. A DC motor is applied in each of a circulation motor 2 and a ventilation motor 11. A room temperature sensing sensor 6 for use in sensing an air temperature within a bath room is arranged near a circulating suction port 4 formed in a bottom face of the main body 1 and similarly a humidity sensing sensor 7 for use in sensing a humidity is arranged near the suction port 4. Accordingly, the DC motors are directly driven at the most suitable rotational speed in response to the room temperature sensing sensor and the humidity sensing sensor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom ventilation dryer which blows warm air into a bathroom to dry laundry and the like, and to dry, ventilate and heat the bathroom.

[0002]

2. Description of the Related Art Conventionally, this type of bathroom ventilation dryer is installed by being embedded in a ceiling of a bathroom, and air is supplied from a circulation inlet provided on a lower surface of a main body by operating a circulation motor. The air in the bathroom is sucked in through the filter, the warm air is blown out from the circulation outlet through the heater, and the laundry is blown against the laundry suspended in the bathroom to evaporate moisture and dry the laundry. . In addition, the absolute humidity of the air in the bathroom rises due to the moisture removed from the laundry, but the moist air in the bathroom is discharged from the outdoor exhaust port by the operation of the ventilation motor, and the steam filled in the bathroom is discharged to the exterior. By discharging, the rise in the absolute humidity is suppressed, and the drying operation of laundry such as clothes can be maintained. However, since this driving motor uses a capacitor motor or a shading coil motor that uses a single-phase AC as a power supply, the rotation speed cannot be increased more than the synchronous speed with the power supply frequency. The range of change in the number of revolutions cannot be significantly changed due to the limitation of the synchronous speed or the forced slip rotation in the future, so the number of revolutions, the air volume of the fan is fixed, and the bathroom size, structure, weather conditions, etc. I could only design.

[0003]

As described above, in the conventional configuration, since the motor using single-phase alternating current as a power source is used, the number of revolutions and the airflow of the fan are fixed, so that various installation conditions and the like are required. On the other hand, the amount of heat required for drying clothes, the heat load in the bathroom, and the proper ventilation cannot be adjusted. In other words, since the amount of heat discharged from the discharge port and the amount of heat exhausted by the ventilation motor are used in a manner that allows natural processes to occur, the drying time cannot be shortened, and the drying running cost increases. There were challenges. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a bathroom ventilation dryer having a short drying time by using a DC motor as a driving motor.

[0004]

According to the present invention, in order to achieve the above object, a circulation fan, a heater, and a ventilation fan are provided on the inside of a main body with a partition on a side of the main body. This drive motor uses a DC motor instead of a capacitor motor or a shading coil motor that uses a single-phase AC as a power source, and a circulation suction port is provided on the lower surface of the main body. And a circulation outlet is formed on the same surface as the suction port, and a room temperature detection sensor and a humidity detection sensor are provided near the circulation suction port. And a controller for intermittently operating the motor.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, laundry is dried by warm air blown into a bathroom by the action of a circulation motor and a heater, and the bathroom is detected by a room temperature detecting sensor. When the inside temperature is detected, the temperature of the bathroom rises to a certain set value, and when the relative humidity in the bathroom exceeds the set value due to the moisture evaporated from the laundry, the operation of the ventilation motor is started, and the bathroom is started. The air whose absolute humidity has risen inside is exhausted to the outside of the room, and when the temperature of the bathroom falls to a certain set value or the relative humidity falls below a certain set value, the operation of the ventilation motor is stopped. By repeating the operation, the drying operation of the laundry can be shortened.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG. As shown in FIG. 1, a main body 1 of a bathroom dryer is installed on a ceiling surface or the like of a bathroom. On a lower surface side of the main body 1, air is circulated by a circulation fan 3 provided with a motor 2 for circulating air in the bathroom. A circulation suction port 4 for suctioning through a filter (not shown) and a circulation discharge port 5 for discharging are provided. A circulation motor 2 for circulating the air in the bathroom, a room temperature detection sensor 6 for detecting the temperature of the air to be sucked, and a humidity detection sensor for detecting the absolute humidity in the bathroom are provided on the side of the circulation suction port 4. -7, and a partition plate 8 is provided at the boundary between the circulation suction port 4 and the circulation discharge port 5,
At the position of the partition plate, a heater 10 as a heating means is provided in an air flow passage 9 communicating with the circulation suction port and the circulation discharge port. Further, a partition 12 is provided between the circulation motor 2 side and the ventilation motor 11 side so as not to communicate with the air.
1 is a ventilation inlet 14 for drawing in from a ventilation fan 13 provided in
And an exhaust port 15 for discharging. Further, the main body 1 having a function of drying laundry and the like, drying of a bathroom, ventilation and heating.
Is provided collectively on the back surface of the main body separately from the main body. The control unit 16 outputs a lead wire (not shown) connected to the room temperature detection sensor 6, a lead wire (not shown) connected to the humidity detection sensor 7, and a ventilation module. A lead wire (not shown) of the motor 11 and a circulation mode.
Lead wires (not shown) of the motor 2 are led out.

When the bathroom ventilation dryer is operated to dry laundry (not shown) suspended in the bathroom by the above configuration, the circulation motor 2 flows into the bathroom from the circulation suction port 4. The air passes through the heater 10 and exchanges heat to blow high-temperature air into the bathroom from the circulation outlet 5 to dry the laundry. On the other hand, the moist air is exhausted to the outside through the exhaust port 15 by the ventilation motor 11.

The ventilation motor 11 is for intermittent operation. That is, the laundry is dried by the high-temperature air blown out from the circulation outlet 5, but the absolute humidity in the bathroom increases due to the moisture removed from the laundry.
A part of the humidity-raised air is exhausted by the ventilation motor 11 which operates intermittently. This will be described with reference to the control unit 16 shown in FIG. 1. When the circulation motor 2 is operated, the control unit is controlled by the room temperature detecting sensor 6, a preset temperature controller and humidity detecting sensor 7, and a humidity controller. The contacts are operated by the electronic control circuit unit 16 and the contacts are opened and closed. If the temperature in the bathroom exceeds the set value by the temperature controller and the room temperature detection sensor 6, the humidity controller and the humidity sensor 7 are used.
When the relative humidity exceeds the set value, the contact is closed and the ventilation motor 11 starts operating. Next, ventilation motor 1
1 operates, the contact is opened when the temperature of the bathroom falls below the set value by the temperature controller and the room temperature detection sensor -6, or when the relative humidity falls below the set value by the humidity controller and the humidity detection sensor -7. The ventilation motor 11 stops operating.

Next, the operating condition of the main body 1 will be described. At the beginning of operation, only the circulation motor 2 is operated, and the ventilation motor 11 is controlled by the room temperature detection sensor 6 until the temperature in the bathroom reaches a set value. Only the high-temperature air is sent into the bathroom while stopped, and the temperature of the bathroom is raised. The rise in the temperature in the bathroom lowers the relative humidity in the bathroom, thereby accelerating the drying of laundry such as clothes. However, when the relative humidity is gradually increased by the moisture removed from the laundry and the temperature in the bathroom reaches a set value, the ventilation motor 11 is operated to exhaust a part of the air having the increased relative humidity in the bathroom. I do. On the contrary, when the temperature of the bathroom reaches the set value while the temperature in the bathroom decreases, the ventilation motor 11 is stopped, and the drying operation is performed only by operating the circulation motor 2 again. The intermittent operation of the motor 11 is continued.

In the present invention, the conventional AC mode
When the circulating motor 2 including the DC motor is operated during the drying operation by using the DC motor instead of the motor, the rotation of the circulating motor 2 is continuously variable. The drying efficiency is calculated by the room temperature detecting sensor 6 and the humidity detecting sensor 7 so that the circulation fan 3 can be driven at the optimum rotation speed, and the heating capacity obtained by the heater 10 is taken into account. In addition, similarly to the circulation motor 2, the rotation of the ventilation motor 11 composed of a DC motor can be continuously variable, and the drying efficiency can be improved by the room temperature detection sensor 6 and the humidity detection sensor 7. And the ventilation fan 13 can be driven at the optimum rotation speed.
Drying performance determined by combination with ventilation performance by
Compatible with various installation conditions, bathroom thermal load, outdoor air conditions, etc., and can set the optimal fan air volume and pressure according to the season, weather conditions, bathroom structure and size, and can control a wide range Becomes In the early stage of drying, the circulation fan 3 is operated at a high speed, the air volume is increased, and the heat is maximized by using the ceramic heater 10 whose electric power is proportional to the air volume. Power can be saved by lowering the heat generation power by lowering the speed. In addition, a room temperature detection sensor provided to shorten the drying time
6 and the control unit 16 connected to the humidity detection sensor 7, the matching property is improved even with the change of the various external factors, and the drying degree is remarkably accelerated.

[0011]

As is apparent from the above embodiment, the motor for driving the bathroom ventilation dryer of the present invention uses a DC motor, and a room temperature detection sensor and a humidity detection are provided near the circulation suction port. A sensor is provided to intermittently control the operation and stop of the ventilating motor when a predetermined set temperature and set humidity are reached. When the thermal load or the outside air condition is changed, the rotation speed and the airflow of the fan are fixed, so that it is not possible to cope with it.However, in the present invention, the rotation speed can be controlled,
Since an appropriate air volume can be set according to the bathroom size, structure, etc., the drying time can be remarkably reduced, the running cost can be reduced, and the direct current can be reduced. Since the motor can be made smaller and lighter than the AC motor, the total weight of the product can be reduced, the power consumption of the motor is small, and a bathroom ventilation dryer with power saving and energy saving effects can be provided. Can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a bathroom ventilation dryer according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Circulation motor 3 Circulation fan 4 Circulation suction port 5 Circulation discharge port 6 Room temperature detection sensor 7 Humidity detection sensor 8 Partition plate 9 Air flow path 10 Heater 11 Ventilation motor 12 Partition 13 Ventilation fan 14 Ventilation intake port 15 Exhaust port 16 Control unit

Claims (1)

[Claims] 1. A ventilation fan which draws air in a bathroom into the interior of a main body and provides a circulation fan and a heater in the air flow path for discharging the air into the same room, and also sucks air in the room through a partition to discharge the air outside the room. A fan is provided, and both fans are driven by a DC motor. A room temperature detection sensor and a humidity detection sensor are provided in the vicinity of the circulation suction port, and the room temperature detection sensor and the humidity detection sensor are used for the ventilation mode. A bathroom ventilation dryer provided with a controller for intermittently operating the heater.