JP2001107419A - Toilet deodorizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toilet deodorizer capable of very effectively deodorizing a toilet. SOLUTION: An exhaust passage 7 for leading an air in a toilet bowl 2 to the rear of a western toilet 1 or a lateral side or the like is provided to the inside of a toilet seat box 3, and a deodorizing fan 8 and a deodorizing cartridge 9 are provided to the exhaust passage 7. The concentration of an odor is detected by an odor sensor 10, and the number of revolutions of the deodorizing fan 8 is controlled in accordance with the concentration. The number of revolutions of the deodorizing fan 8 can be adjusted on the basis of a sensor 6 for detecting an opening and closing of a toilet cover 5 or a detection signal of a sitting sensor 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet deodorizing device for removing odor generated in a toilet, and more particularly to a toilet deodorizing device for discharging air in the toilet to the outside of the toilet with an exhaust fan.

[0002]

2. Description of the Related Art In recent years, toilet deodorizing apparatuses for sucking and exhausting odor-containing air in toilet bowls have been rapidly spreading.
In order to improve the deodorizing efficiency of this toilet deodorizing device, a device that detects a human body in a toilet room with a sensor and detects the approach of the human body to the toilet and starts a deodorizing fan is known (Japanese Patent Application Laid-Open No. 8-218468). ).

[0003] In addition, in order to prevent the user from feeling unpleasant by strongly deodorizing the odor of the previously used person, the deodorization is performed when the human body detection sensor enters the human body detection state. The intake air volume of the fan is made larger than the normal intake air volume, and when the seating detection sensor enters the state of detecting the human body, the intake air volume of the deodorizing fan becomes the normal intake air volume,
2. Description of the Related Art A toilet deodorizing device is known in which the amount of air suctioned by a deodorizing fan becomes larger than a normal amount of air intake when a seating detection sensor detects a non-seating state of a human body (Japanese Patent Laid-Open No. 11-200444).

[0004]

Since the conventional toilet deodorizing apparatus does not have a viewpoint of controlling the air volume of the deodorizing fan according to the actual odor concentration, for example, when the deodorization of the odor is extremely strong, deodorization is performed. The effect was sometimes insufficient. On the contrary, the deodorizing fan may be operated even when there is almost no odor.

[0005] It is an object of the present invention to provide a toilet deodorizing device in which a deodorizing fan is operated according to an actual odor concentration.

[0006]

A toilet deodorizing device according to the present invention is a toilet deodorizing device for discharging air from the toilet to the outside of the toilet with an exhaust fan, the air in the toilet or in an exhaust passage communicating with the toilet. An odor sensor for detecting an odor concentration in the odor sensor, and control means for controlling an exhaust air volume of the exhaust fan in accordance with the odor concentration detected by the odor sensor.

According to such a toilet deodorizing device, it is possible to control the exhaust air volume to increase as the odor concentration increases, and to stop the exhaust fan when the odor concentration falls below a predetermined level.

In the present invention, it is preferable to provide a deodorizing device for removing odor components in the exhaust passage and discharge the deodorized air into the toilet room. However, the exhaust from the toilet bowl is discharged outside the toilet room (such as outside air) or in a building. It may be discharged to an exhaust duct or a drain pipe. Further, the exhaust gas may be flown into the reservoir water in the low tank to absorb the water-soluble odor component into the water in the low tank.

When the toilet lid is closed, almost no odor is diffused, so that the exhaust air volume may be reduced.

As the above-mentioned odor sensor, a sensor for detecting the concentration of one or more of typical odor compounds such as hydrogen sulfide, methyl mercaptan, ammonia and trimethylamine can be used.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a toilet deodorizing device according to an embodiment, and FIG. 2 is a block diagram of the toilet deodorizing device.

A toilet seat box 3 is installed on the rear upper surface of the toilet bowl 2 of the Western-style toilet 1, and the toilet seat 4 and the toilet lid 5 are supported by supporting shafts 4a, 5a.
Is attached to the toilet seat box 3 so as to be rotatable vertically. A toilet lid sensor 6 for detecting the closing of the toilet lid 5 (falling down onto the Western-style toilet 1) is provided on the support shaft 5a of the toilet lid 5. Although the toilet seat 4 is provided with the capacitance change type seating sensor 11, a toilet seat falling detection sensor having the same configuration as the toilet lid sensor 6 may be provided on the toilet seat support shaft 4a.

An exhaust passage 7 is provided in the toilet seat box 3 for guiding the air in the toilet bowl 2 to the rear or side of the Western-style toilet 1, and the exhaust passage 7 has a deodorizing fan 8 and a deodorizing cartridge. 9 are installed. Although this deodorizing cartridge 9 contains activated carbon in a basket-like casing, it is apparent that a deodorizer having another configuration may be used.

An odor sensor 10 is provided near the entrance of the exhaust passage 7. These sensors 6, 10, 11
Is input to the control device 12, which controls the deodorizing fan 8. The odor sensor may be provided at another location, for example, at a position facing the toilet bowl 2.

The operation of the toilet deodorizing device thus configured will be described.

When the user turns down the toilet seat 4 or sits down on the toilet seat 4 in the lying state, the seating sensor 11 outputs a seating signal, and the control device 12 starts the rotation of the deodorizing fan 8 at a predetermined speed. . When an odor is generated due to defecation, the odor concentration is detected by the odor sensor 10. The rotation speed of the deodorizing fan 8 is controlled according to the odor concentration. This control example will be described next. (Control Example 1) When the odor concentration reaches the predetermined concentration C1, the rotational speed is increased, and when the odor concentration becomes higher than C2, the rotational speed is further increased. (Control Example 2) When an odor is detected, the number of revolutions is increased in proportion to the odor concentration (proportional control). (Control example 3) Instead of the proportional control (P control)
The number of revolutions is controlled based on the time derivative and / or the integrated value of the odor concentration (PD integration, PI integration or PID integration). (Control Example 4) In the above, when the seating sensor 11 stops detecting the seating, the deodorizing fan 8 is stopped after a predetermined time has elapsed. (Control Example 5) In the above, when the seating sensor 11 stops detecting the seating, the deodorizing fan 8 is rotated until the odor concentration detected by the odor sensor 10 becomes equal to or lower than a predetermined value. The deodorizing fan 8 is stopped. (Control Example 6) Alternatively, when the seating sensor 11 stops detecting the seating, the number of rotations of the deodorizing fan 8 is reduced to save power. (Control Example 7) Alternatively, when the seating sensor 11 stops detecting the seating, the rotation speed of the deodorizing fan 8 is increased, and even when the toilet bowl 2 closed by the buttocks of the human body is opened, the odor is reduced. It is difficult to spread out of the pot 2. (Control Example 8) Alternatively, when the toilet sensor 6 detects that the toilet lid is closed within a predetermined time after the seat sensor 11 does not detect the seat, the rotational speed of the deodorizing fan 8 is reduced to save power.

The above embodiment is an example of the present invention, and the present invention may employ a configuration other than the above. For example, the rotation speed of not only the deodorizing fan 8 but also the ventilation fan in the toilet room may be controlled according to the detection concentration of the odor sensor 10. When the odor concentration is higher than the predetermined concentration, the flash valve device may be driven.

[0018]

As described above, according to the toilet deodorizing apparatus of the present invention, a very effective toilet deodorizing can be performed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a toilet deodorizing device according to an embodiment.

FIG. 2 is a block diagram of the toilet bowl deodorizing device of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Western-style toilet 2 Toilet bowl 3 Toilet seat box 4 Toilet seat 5 Toilet lid 6 Toilet lid sensor 7 Exhaust passage 8 Deodorizing fan 9 Deodorizing cartridge 10 Odor sensor 11 Seating sensor 12 Control device

Continued on the front page (72) Inventor Nobuyuki Tanaka 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Eiji Saito 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72 ) Inventor Hiroyasu Fukaya 5-1-1 Koiehoncho, Tokoname-shi, Aichi F-term in Inax Corporation (reference) 2D038 BB11 BC01 GA00 KA03 KA21

Claims (3)

[Claims] A toilet deodorizing device for discharging air in a toilet to the outside of the toilet by an exhaust fan, comprising: an odor sensor for detecting an odor concentration in air in the toilet or in an exhaust passage communicating with the toilet; A controller for controlling an exhaust air volume of the exhaust fan in accordance with an odor concentration detected by an odor sensor. 2. The toilet deodorizing device according to claim 1, wherein a deodorizing device for removing an odor component in the air is provided in the exhaust passage. 3. The toilet bowl sensor according to claim 1, further comprising a toilet lid sensor for detecting the closing of the toilet lid of the toilet, wherein the toilet lid sensor detects that the toilet lid is closed. A toilet deodorizing device characterized by sometimes reducing the rotation speed of an exhaust fan.