JPH04285597A - Bathroom ventilating/drying machine - Google Patents

Abstract

PURPOSE:To shorten the drying time and suppress the running cost by equipping a drying machine as per invention at its body part in the neighborhood of the suction hole with a room temp. sensor to sense the air temp. in a bathroom and a humidity sensor to sense the humidity, and operating a ventilation blower intermittently in conformity to the signals given by these sensors. CONSTITUTION:The body 1 of a ventilating and drying machine for bathroom is installed in an opening 3 provided in the ceiling 2 of bathroom, and a suction hole 4 and a blowout hole 5 are furnished at the undersurface of the body 1. An air filter 6, blower 7 for circulation, room temp. sensor 8, and humidity sensor 9 are installed on the suction hole 4 side, while a heat-exchange 10 is installed on the blowout hole 5 side, and a control part 14 is installed between a partition plate 13 and a ventilation blower 11. This ventilation blower 11 operates when the bathroom temp. is raised over the set value by a temp. regulator and the sensor 8 and also the relative humidity is raised over the set value by a humidity regulator and the sensor 9, and the blower 11 stops when the relative humidity sinks below the set value, so that the drying time is shortened and the running cost is suppressed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-embedded bathroom ventilation dryer.

0002

BACKGROUND OF THE INVENTION In recent years, due to the increasing number of dual-income workers, there has been a desire to dry laundry indoors, and as a result, there has been an increase in demand for bathroom ventilation dryers that use bathrooms as places to dry laundry.

Conventionally, this type of ceiling-embedded bathroom ventilation dryer is installed embedded in the ceiling of the bathroom, as shown in FIGS. Air in the bathroom is sucked in through a suction port 103 and an air filter 104 provided at the bottom of the heat exchanger 1.
05, hot air is blown out from the air outlet 106, and the laundry 107 suspended in the bathroom is dried. Furthermore, since the moisture removed from the laundry 107 increases the absolute humidity of the air in the bathroom, an opening 109 is provided between the ventilation blower 108 and the heat exchanger 105, and the main body 102 facing the opening 109 The ventilation blower 108 is provided outside the bathroom, and a part of the air in the bathroom is discharged outside through a duct 110, thereby suppressing the increase in absolute humidity and maintaining the clothes drying operation.

0004

[Problems to be Solved by the Invention] With such a conventional configuration, it is not possible to adjust the amount of heat required for drying clothes, the heat load in the bathroom, and the appropriate amount of ventilation for various installation conditions. In other words, the amount of heat blown out from the outlet 106 and the amount of heat exhausted by the ventilation blower 108 are used in a form that is left to take its natural course.
There were problems such as the drying time could not be shortened and running costs increased.

[0005] The present invention solves the above-mentioned problems, and an object of the present invention is to provide a bathroom ventilation dryer with a short drying time.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention includes a circulation blower and a heat exchanger inside a main body, a ventilation blower on the side of the main body, and a ventilation blower on the bottom surface of the main body. A suction port and an air outlet are formed on the same surface as the suction port,
A room temperature detection sensor and a humidity detection sensor are provided in the vicinity of the suction port, and a control section is provided in which the ventilation blower is operated intermittently based on the room temperature detection sensor and humidity detection sensor.

[0007]

[Function] With the above-described configuration, the present invention dries the laundry with warm air blown into the bathroom by the action of the circulation blower and heat exchanger, detects the temperature in the bathroom with the room temperature detection sensor, and detects the temperature in the bathroom. When the temperature rises to a certain set value and the relative humidity in the bathroom exceeds the set value due to moisture evaporated from the laundry, the ventilation fan starts operating, and the air with increased absolute humidity in the bathroom is pumped outdoors. When the temperature in the bathroom drops to a certain set value or the relative humidity drops below a certain set value, the ventilation blower is stopped, and this repeated operation shortens the laundry drying time. It is something that can be done.

[0008]

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in FIG. 1, a main body 1 of a bathroom ventilation dryer is installed in an opening 3 in a ceiling surface 2 of a bathroom.
A suction port 4 and a suction port 5 for sucking air from the bathroom are provided on the bottom side of the bathroom. The suction port 4 side is equipped with an air filter 6, a circulation blower 7 for circulating air in the bathroom, a room temperature detection sensor 8 for detecting the temperature of the intake air, and a humidity detection sensor 9. A heat exchanger 10 for passing a refrigerant such as hot water is provided on the side. Also, the circulation blower 7
A partition plate 13 forming an exhaust communication port 12 is provided on the side of the outlet 7a of the ventilation blower 11 so that a part of the air communicates with the ventilation blower 11. 14. From the control unit 14, a lead wire 15 connected to the room temperature detection sensor 8, a lead wire 16 connected to the humidity detection sensor 9, and a lead wire 17 connected to the motor 11a of the ventilation blower 11.
Lead wires (not shown) connected to the circulation blower 7 are led out. FIG. 2 is a circuit diagram inside the control section 14.

With the above configuration, when the bathroom ventilation dryer is operated to dry the laundry (not shown) suspended in the bathroom, the air in the bathroom flowing in from the suction port 4 is exchanged with heat by the circulation blower 7. The high temperature air that has been heat exchanged through the container 10 is blown into the bathroom from the outlet 5 to dry the laundry. On the other hand, a part of the air blown out from the outlet 7a of the circulation blower 7 is turned into moist air by the ventilation blower 11, and a part thereof is exhausted to the outside through a duct (not shown).

[0011] Here, the ventilation blower 11 is operated intermittently. That is, the laundry is dried by high-temperature air blown out from the air outlet 5, but the absolute humidity in the bathroom increases due to the moisture removed from the laundry, so a part of this high-humidity air is operated intermittently. The air is exhausted by a ventilation blower 11. To explain this using the control circuit shown in FIG. 2, when the operation switch 19 connected to one end of the power supply 18 is turned on, the circulation blower 7 is operated, and the room temperature detection sensor 8 and the preset temperature controller 20 are activated. and the electronic control circuit section 14a of the control section 14 by the humidity detection sensor 9 and humidity regulator 21.
The contact 22 is closed when the temperature controller 20 and the room temperature detection sensor 8 detect that the temperature in the bathroom exceeds the set value, and the humidity controller 21 and the humidity sensor 9 indicate that the relative humidity exceeds the set value. Ventilation blower 1
1 starts driving. Next, when the ventilation blower 11 is operated, the temperature controller 20 and the room temperature detection sensor 8 detect whether the temperature in the bathroom is below the set value or the humidity controller 21
When the humidity sensor 9 detects that the relative humidity falls below a set value, the contact 22 opens and the ventilation blower 11 stops operating.

To explain this by comparing the embodiment of the present invention (solid line) and the conventional example (dotted line) using the graphs shown in FIGS. Until the temperature in the bathroom reaches the set value shown in FIG. 3, only high-temperature air is sent into the bathroom while the ventilation blower 11 is kept stopped by the room temperature detection sensor 8 to raise the temperature in the bathroom. This rise in bathroom temperature causes the bathroom relative humidity shown in FIG. 4 to decrease, which speeds up the drying of clothes. However, when the temperature in the bathroom reaches a set value while the relative humidity is gradually increased by the water removed from the laundry, the ventilation blower 11 is operated to exhaust a part of the air with increased relative humidity in the bathroom. The ventilation fan 11 is stopped when the temperature in the bathroom decreases due to this exhaustion and reaches the set value, and the drying operation is started again with only the circulation fan 7 operating.
While repeating this, the intermittent operation of the ventilation blower 11 is continued.

To repeat here, when the ventilation blower 11 is constantly operated during drying operation as in the conventional case, the heating capacity obtained by the circulation blower 7 and the heat exchanger 10 and the ventilation blower 11 are Drying performance, which is largely determined by the combination with ventilation performance, cannot accommodate all types of installation conditions, bathroom thermal loads, outside air conditions, etc. By the control section 14 connected to the room temperature detection sensor 8 and humidity detection sensor 9 provided to shorten the drying time,
The matching performance is good even with changes in the various external factors mentioned above, and as shown in Figure 5, the dryness is significantly faster as shown by the solid line compared to the conventional dryness shown by the dotted line. It is.

[0014]

As is clear from the above embodiments, according to the present invention, a room temperature detection sensor and a humidity detection sensor are provided near the suction port of a ceiling-embedded bathroom ventilation dryer, and a predetermined set temperature can be set. Since the ventilation blower is controlled to start and stop intermittently when the ventilation blower is reached, the drying time can be significantly shortened compared to conventional bathroom ventilation dryers that operate the ventilation blower continuously. It is possible to provide a ceiling-embedded bathroom ventilation dryer that is effective in reducing running costs.

[Brief explanation of the drawing]

[Fig. 1] A sectional view of a ceiling-embedded bathroom ventilation dryer according to an embodiment of the present invention.

[Figure 2] Control circuit diagram of the bathroom dryer

[Figure 3] Correlation diagram between bathroom temperature and operating time between the conventional bathroom dryer and this example.

[Fig. 4] Correlation diagram between relative humidity in the bathroom and operating time between the conventional bathroom dryer and this example.

[Fig. 5] Correlation diagram between dryness of laundry and operating time between the conventional bathroom dryer and the present example.

[Figure 6] Cross-sectional view of a conventional bathroom ventilation dryer

[Fig. 7] A perspective view showing the installation state of the conventional bathroom dryer.

[Explanation of symbols]

1 Main body 4 Suction port 5 Air outlet 7 Circulation blower 8 Room temperature detection sensor 9 Humidity detection sensor 10 Heat exchanger 11 Ventilation blower 14 Control section

Claims (1)

[Claims] Claim 1: A circulating blower and a heat exchanger are provided inside the main body, and a ventilation blower is provided on the side of the main body, and an inlet is formed on the lower surface of the main body, and an outlet is formed on the same surface as the inlet. , a ceiling-embedded bathroom ventilation comprising: a room temperature detection sensor and a humidity detection sensor provided near the suction port; and a control unit configured to operate the ventilation blower intermittently based on the room temperature detection sensor and humidity detection sensor. Dryer.