JPH05311900A - Electric drip-proof ceiling - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a drip-proof ceiling that does not easily get dirty and does not drop water droplets due to dew condensation. [Structure] Electric drip-proof ceilings 5, 7 and 8 in which a heater and a temperature sensor are built in the ceiling of a bathroom 1, a humidity sensor 12 for detecting the humidity of the bathroom, and a control unit for controlling the heater by an output signal of the humidity sensor 12. 9 is provided. As a result, a large amount of steam is supplied to the bathroom, and even if it is a steam bathroom, no condensation occurs on the ceiling of the bathroom and water drops do not fall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric drip-proof ceiling provided on a ceiling of a bathroom so that water droplets do not adhere to the ceiling.

[0002]

2. Description of the Related Art Conventionally, a drip-proof ceiling of this type of bathroom is shown in FIG.
As shown in, the ceiling was coated with a drip-proof material. That is, the ceiling 1 is coated with the hydrophilic drip-proof material 2, and when steam is generated, or when steam 3 is generated by steam operation that fills the bathroom with steam, the generated steam is hydrophilic. It was absorbed by the drip material 2 so that water droplets did not stick to the ceiling of the bathroom.

[0003]

However, in such a structure, since the special material is applied, there is a problem that stains easily occur and it is difficult to remove the stains. In addition, since a hydrophilic drip-proof material is used, there is a limit to the drip-proof capacity, and especially when the bathroom is filled with a large amount of steam as in steam operation, steam is generated that exceeds the drip-proof capacity. Therefore, there is a problem in that the steam condenses on the ceiling and eventually drops of water drop, which gives a bather discomfort.

Therefore, it is a first object of the present invention to provide a drip-proof ceiling having a structure in which the ceiling does not easily get dirty, and when it gets dirty, the dirt is easily removed, and water drops do not drop.

A second object is to minimize the adhesion of water drops on the ceiling. Further, the third purpose is to make the humidity sensor work more effectively.

[0006]

In order to achieve the above first object, the present invention is provided in a ceiling part of a bathroom, a heater for raising the temperature of the ceiling part, and a humidity sensor for detecting the humidity of the bathroom. And a control unit for starting energization of the heater in response to the output signal of the humidity sensor.

Further, in order to achieve the second object, the present invention is provided with a delay portion for turning off the energization of the heater after a lapse of a certain time after the output signal from the humidity sensor is output.

Further, in order to achieve the third object, the present invention provides a ventilation fan in the bathroom, a humidity sensor is provided in the vicinity of the ventilation fan, and when the output signal from the humidity sensor is continuously output for a predetermined time or longer. It is provided with a forced ventilation fan operating section that operates the ventilation fan for a certain period of time.

[0009]

In the electric drip-proof ceiling system of the present invention, since the ceiling surface in the bathroom is not coated with the drip-proof material due to the above-mentioned structure, it is difficult to get dirt and is easy to clean. In addition, the temperature of the ceiling of the bathroom is made slightly higher than the temperature inside the bathroom by the heater to prevent drip. Also, since it requires only a small amount of electric power and has a high drip-proof capability, even if a large amount of steam is generated in the bathroom like steam operation, water drops will not fall from the ceiling of the bathroom.

It also minimizes the deposition of water drops on the ceiling.
In addition, use a ventilation fan for effective drip-proof operation.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of the electric drip-proof ceiling of the present invention. In the drawing, 1 is a ceiling part of a bathroom, 4 is a ventilation fan provided in the ceiling part 1, 5 is an electric drip-proof ceiling that also serves as an inspection port, and a heater unit 6 including a heater 16 and a first temperature sensor 17. It consists of Further, a heater unit including a heater and a temperature sensor is installed in the flat portion and the dome portion of the ceiling portion 1 to form an electric drip-proof ceiling 7 and an electric drip-proof ceiling 8, respectively.

These heater units are controlled by a control unit (hereinafter referred to as an electric drip-proof controller) 9. A commercial power source 10 is input to the electric drip-proof controller 9. Reference numeral 11 denotes a steam generator that generates steam, and steam 15 passes through the steam pipe 13 and blows out from the discharge port 14 during steam operation.

The electric drip-proof controller 9 is a humidity sensor 1.
2 detects bathroom humidity. As shown in FIG. 1, the humidity sensor 12 is installed in or near the ventilation fan 4. This is because when the humidity of the bathroom is close to 100% as in steam operation, the surface of the humidity sensor is difficult to dry due to dew condensation, and the ventilation fan is rotated to force the surface to dry.

A dew sensor may be used in place of the humidity sensor described above to detect humidity.

FIG. 2 shows a cross-sectional view of the ceiling portion when the heater unit is installed on the ceiling portion 1. A heater unit including a heater 16, a first temperature sensor 17 (hereinafter referred to as a temperature detection line), a heat insulating material 18, and a heat radiating plate 19 is installed on the ceiling 1. The temperature detection line 17 has a characteristic that the impedance is low when the temperature is high and the impedance is high when the temperature is low, and detects the temperature rise of the ceiling portion 1 by the heater 16. The heat radiation plate 19 is connected to the temperature detection line 1 from the heater 16.
It is for improving the heat conduction to 7. Insulation 1
Reference numeral 8 is for transmitting as much heat as possible from the heater 16 to the ceiling portion 1 so that the heat does not escape to the upper portion. The heat insulating material 18 also serves to reinforce the ceiling 1.

FIG. 3 shows a detailed arrangement example of the heater 16 and the temperature detection wire 17 of the electric drip-proof ceiling 5. The heater unit 6 having the temperature detection line 17 arranged at the same distance from the heater 16 is installed. Therefore, the average temperature of the entire surface of the electric drip-proof ceiling 5 can be detected. The electric drip-proof ceiling 7 and the electric drip-proof ceiling 8 have the same structure and detect the average temperature of the entire ceiling portion.

As another heater unit, the temperature detecting wire 17 is used.
A thermistor or a thermostat may be used instead of. Although the heater 16 is a line heater, a surface heater may be used instead.

FIG. 4 is a control block diagram showing an embodiment of the electric drip-proof ceiling system. A signal from the temperature detection line 17 is input to the temperature detection unit 20 and its output is supplied to the control unit 25.
Input to the ceiling temperature control unit 22. When the ceiling temperature is low, the ceiling temperature control unit 22 sends an ON signal to the heater 16 to turn on the heater 16. After that, when the ceiling temperature rises, the heater 16 is turned off. In this way, the heater 16 is energized.

Control point of temperature detection line 17 (heater 16 is turned on)
The temperature for FF) is set slightly higher than the temperature in the bathroom during steam operation.

An electric drip-proof switch 24 for manual operation is input to the control section 25. Turn on the electric drip-proof switch 24
When N is set, the energization of the heater is controlled for a certain time.

Further, a signal from the humidity sensor 12 for detecting the humidity of the bathroom is inputted to the humidity detecting section 21 and its output is inputted to the control section 25. When the humidity sensor 12 detects that the humidity of the bathroom is high, the energization control of the heater is automatically started. After that, when the humidity in the bathroom changes from high to low, a low humidity output signal is output from the humidity sensor to the humidity detecting unit 21, and an OFF output from the humidity detecting unit 21 is input to the delay unit 23 provided in the control unit 25. Then, the energization control of the heater 16 is delayed for a fixed time determined by the delay unit 23.

Reference numeral 26 indicates a ventilation fan forced operation section. If the bathroom is near 100% humidity as in steam operation, the surface of the humidity sensor will condense and it will be difficult to dry. In order to solve this, the ventilation fan forced operation unit 26 is provided, and when the surface of the humidity sensor does not dry after a predetermined time or more, the ventilation fan control unit 2
An output signal is output from 7, and the ventilation fan 4 is rotated to forcibly dry the surface of the humidity sensor. FIG. 5 shows a time chart of the manual operation by the electric drip-proof switch 24 and the automatic operation by the signal from the humidity sensor 12.

The manual operation will be described. When the electric drip-proof switch is turned on, heater energization control is performed for a fixed time T1.
If the ON signal is input by the switch when the electric drip-proof switch is turned on and the predetermined time T1 has not elapsed, the energization of the heater is stopped at that point.

Next, the automatic operation will be described. The relationship between the bathroom humidity, the ventilation fan operation, the output of the humidity detector 21 and the heater energization control is shown.

First, when the humidity of the bathroom rises due to steam operation or the like, the humidity sensor 12 detects this and the humidity detecting section 21.
Outputs an ON output to start heater energization control. The bathroom humidity finally reaches over 95%.

After that, when the steam operation is turned off, the bathroom humidity is lowered, and the humidity sensor outputs a low humidity output signal to the humidity detector 21, and the humidity detector 21 outputs an OFF output. Then, the control unit 25 detects it and continues the heater energization control for the fixed time (T1) determined by the delay unit 23. The heater energization control is delayed for a certain time (T1) because the bathroom humidity may still be sufficiently high immediately after the low humidity output signal is output from the humidity sensor, and in that case water droplets are prevented from adhering to the ceiling. This is because. In order to prevent water droplets from adhering to the ceiling, a certain period of time set by the delay unit is indispensable. After a certain period of time, the bathroom humidity will drop sufficiently.

If the steam operation time is very long, it takes a very long time to dry when the surface of the humidity sensor is condensed and left standing. In such a case, the ventilation fan is forcibly operated for a certain period to dry the surface of the humidity sensor.

The time chart of automatic operation will be described in detail. The high humidity output signal from the humidity sensor indicates a predetermined time T2.
When continuing, the ventilation fan control unit 27 sends a signal to the ventilation fan 4 to forcibly operate the ventilation fan 4 for a certain period. Then, the surface of the humidity sensor 12 is forcibly dried to turn off the output of the humidity detector 21. After that, the delay operation for the predetermined time T1 is performed again as described above.

According to this embodiment, even if a large amount of steam is generated in the bathroom, the water droplets that have condensed on the ceiling of the bathroom do not drop and do not make the bather feel uncomfortable.

[0031]

As described above, according to the electric drip-proof ceiling system of the present invention, the following effects can be obtained. (1) A heater and a temperature sensor are built in the ceiling of the bathroom to form an electric drip-proof ceiling, and a humidity sensor that detects the humidity of the bathroom and a control unit that controls the heater according to the state of the humidity sensor Since it is prevented from generating, it is easy to clean the ceiling and keep it clean. Also, since the temperature of the ceiling of the bathroom is made slightly higher than the temperature in the bathroom by the heater to prevent drip, only a small amount of electric power is required, and since the drip-proof ability is high, steam operation is performed to generate a large amount of steam in the bathroom Even if it is generated, water drops will not drop from the ceiling of the bathroom. (2) The control unit is equipped with a delay unit that stops the energization of the heater by delaying for a certain period of time after the low humidity output signal from the humidity sensor is output. ) Can be (3) Since a ventilation fan is provided in the bathroom and a humidity sensor is provided in the vicinity of this ventilation fan, the ventilation fan is forced to operate for a certain period of time when the output signal output from the humidity sensor continues for a predetermined time or longer. The humidity sensor is regularly dried, so that the heater is not energized continuously for a long time, and the electric power is wasted accordingly.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric drip-proof ceiling according to an embodiment of the present invention.

FIG. 2 is a sectional view of the ceiling when a heater unit is installed on the ceiling.

FIG. 3 is a plan view showing an arrangement example of heater wires and temperature detection wires in a heater unit provided on the ceiling.

FIG. 4 is a control block diagram for controlling the heater unit on the ceiling.

FIG. 5 is a time chart showing a state in which a heater unit on the ceiling is controlled.

[Figure 6] Conventional drip-proof ceiling

[Explanation of symbols]

 1 Ceiling part 4 Ventilation fan 5, 7, 8 Electric drip-proof ceiling 9 Control part 12 Humidity sensor 16 Heater 17 Temperature sensor 23 Delay part 26 Ventilation fan forced operation part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location G01N 27/00 A 7363-2J

Claims (3)

[Claims] 1. A heater provided on a ceiling of a bathroom for raising the temperature of the ceiling, a humidity sensor for detecting the humidity of the bathroom, and a controller for starting energization of the heater by an output signal of the humidity sensor. Electric drip-proof ceiling with and. 2. The electric drip-proof ceiling according to claim 1, further comprising a delay unit for turning off the power supply to the heater after a certain period of time elapses after the humidity of the bathroom falls below a predetermined humidity. 3. A ventilation fan is provided in the bathroom, a humidity sensor is provided in the vicinity of the ventilation fan, and a ventilation fan forced operation unit is provided for operating the ventilation fan for a predetermined time when the output signal from the humidity sensor continues for a predetermined time or more. The electric drip-proof ceiling according to claim 1 or 2.