JP2666504B2 - Toilet deodorizer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing apparatus for toilets having a function of removing malodorous components such as ammonia, hydrogen sulfide, and various mercaptans.

2. Description of the Related Art Conventionally, such a deodorizing toilet bowl is disclosed in, for example,
No. 719 discloses a configuration as shown in FIG.

That is, a fan 36 and a motor are provided inside a duct 35 having an odor intake port 33 opened to the toilet body inner space 32 and an odor intake port 33 facing the inside of the toilet at the other end. A blower 38 composed of 37 and an ozone generator 39 are provided. The solid arrows indicate the flow of air.

Further, as another example, as shown in Japanese Patent Application Laid-Open No. 63-39426, there is a configuration as shown in FIG. That is, inside a box 43 having a odor intake port 41 having a toilet seat 48 at one end and opening to the toilet inner surface 40 and an exhaust port 42 facing the toilet at the other end, a blower 44 and a high-pressure discharger comprising a fan and a motor are provided. A configuration is disclosed in which ozone is generated in 45, odor is oxidized in a reaction chamber 46, and excess ozone is purified by a catalyst 47. The solid arrows indicate the flow of air.

In any of the above configurations, when the blower is driven, air flows from the suction port to the discharge port, air containing odor components at the time of defecation is sucked from the odor suction port, and when the ozone is generated, the odor components are oxidized and removed. It is discharged from the exit.

Further, as shown in, for example, JP-A-1-151627, there is a configuration as shown in FIG. That is, an odor inlet 52 having a toilet seat 50 at one end and opening on the inner surface 51 of the toilet bowl.
Then, a duct 55 is formed downstream of the suction odor by suctioning the odor by the fan 54 through the deodorizing unit 53 and the toilet seat inner surface 51 is formed.
A configuration having a discharge port 56 in a part of the toilet seat facing the toilet is disclosed. The solid arrows indicate the flow of air.

In the above configuration, when the blower is driven, a flow of air from the odor suction port to the discharge port is generated, and the air containing the malodorous component at the time of defecation is deodorized by the deodorization unit and discharged from the discharge port around the toilet. By repeating this, the deodorizing effect is enhanced.

However, in the configuration described in Japanese Patent Application Laid-Open No. Sho 60-31719, the human body only has a function of oxidizing and removing malodorous components with ozone and has no function of purifying excess ozone.
There is a problem with safety because harmful ozone concentrations can result.

Further, in the configuration as disclosed in Japanese Patent Application Laid-Open No. 63-39426, if the decomposition efficiency of residual ozone is reduced for some reason, high-concentration ozone may be released indoors, and there is a problem in safety.

In addition, the configuration as disclosed in Japanese Patent Application Laid-Open No. 1-15627 has a complicated ventilation path configuration, and particularly, the air path junction with the rotating toilet may be infiltrated by sewage, so that it is cost effective. . Also, no specific means for the deodorizing unit is disclosed.

The present invention solves the above-mentioned problems, and provides a toilet deodorizing apparatus which utilizes ozone with a simple configuration, is highly safe for a human body, and can be used semi-permanently without replacement.

Means for Solving the Problems A main body mounted and fixed on the rear upper surface of the toilet, and a duct and a duct having an odor suction port and an exhaust port at a position facing the inner surface of the toilet, and communicating between the two insides thereof An ozone generating section is built in from the odor suction port side, and an oxidation catalyst and a blower are built in the downstream, and the odor generated in the inner space of the toilet bowl is sucked into the main body duct from the odor suction port, and the ozone generated by the ozone generating section is used. A circulating air path is configured to oxidize and deodorize the odor and reduce excess ozone to oxygen with an oxidation catalyst and return the oxygen from the outlet to the inner space of the toilet.

Operation With the above configuration, the malodorous component generated in the inner space of the toilet is sucked by the blower, oxidized and deodorized by the ozone generated from the ozone generator and the catalyst, and excess ozone is reduced to oxygen and returned to the inner space of the toilet. Even if ozone with a high concentration is released into the inner space of the toilet, it is sucked again and repeated to be diluted. Also, ozone is compatible with water and dissolves in stagnant water on the inner surface of the toilet bowl, or naturally attenuates and returns to oxygen.

For the above reasons, an ozone concentration that does not affect the human body can be secured. Also, because it can avoid contact with the human body,
The deodorizing effect can be exhibited safely over a long period of time.

Embodiment An embodiment of the present invention will be described with reference to FIGS.

In FIG. 2, there is a toilet 1 in a toilet room, and a main body 17 mounted and fixed on the upper rear side of the toilet, and a toilet seat 2 and a toilet lid 3 are provided on the upper surface so as to be freely opened and closed. In FIG. 1, reference numeral 4 denotes an odor suction port facing the toilet inner surface space 5 and opened on the back surface of the main body, and reference numeral 6 denotes a discharge port. A duct 7 communicates between the odor inlet 4 and the outlet 6. In the duct 7, an ozone generating section 8 composed of a discharge electrode from the odor suction port side, and a blower including a oxidation catalyst 9, a fan 10 and a motor 11 downstream of the ozone generating section 8 for decomposing and processing the malodorous component and returning excess ozone to oxygen.
A circulation air path indicated by an arrow is formed between the toilet inner space 5 and the duct 7.

The operation will be described in the above configuration. First, deodorization during defecation is detected by a seating detection device (not shown) when a person sits on the toilet 1, and the motor 11 or the rotating blower 12 is operated by a signal from the control unit 13. Then, an air flow from the odor suction port 4 to the discharge port 6 is generated, and the air containing the malodorous component at the time of defecation is sucked from the suction port 4 and flows through the duct 7 as shown by the arrow. At this time, the malodorous component is decomposed into deodorant components by a strong oxidation action of ozone generated by silent discharge or creeping discharge at a high voltage to a small amount of sulfur dioxide gas or nitrogen oxide, and is deodorized, and further promoted by passing through the oxidation catalyst 9. At the same time, unreacted excess ozone is reduced to oxygen and discharged from the outlet 6 to the toilet interior space 5. However, when the decomposition efficiency of residual ozone is reduced for some reason, high-concentration ozone is discharged. However, since the discharge destination is in the toilet, the ozone is sucked again from the odor suction port and is repeatedly diluted to be diluted. At the same time, the ozone has compatibility with water and dissolves in the stagnant water 14 on the inner surface of the toilet bowl, and naturally returns to oxygen after being attenuated. In the process, there is also a sterilizing action on the toilet inner space 5 and the toilet wall 15. When the defecation ends and the toilet seat 1 rises up, the detecting device (not shown) detects it and the blower 12 stops by the signal of the control unit 13 to finish the deodorization. It is also possible to make it. Further, if a deodorization on / off switch is provided, the deodorization can be performed continuously.

In addition, the ability to decompose ozone has a high ability to decompose indole and skatole, which is a odor of feces, but the ability to decompose ammonia and acetaldehyde is slightly low. If it is sufficiently decomposed and heated to 300 ° C or more, almost all odors including ozone can be decomposed, so
The heater 16 can be incorporated into the oxidation catalyst and heated to increase the ability to decompose malodorous components. At this time, if the temperature of the oxidation catalyst 9 is excessively increased by the heater 16, the duct may be deformed.
The temperature must be kept constant.

Thus, according to the present embodiment, the ozone concentration (0.006 ppm) which does not affect the human body even if the residual ozone is discharged by forming the circulation air passage between the deodorizing device built in the main body and the inner space of the toilet seat. ) The following can be secured.

Also, because it can avoid direct contact with the human body,
It is possible to provide a deodorizing device that can safely exhibit a deodorizing effect over a long period of time and does not require replacement of a deodorizing agent or the like. Note that the arrangement of the blower 12 does not necessarily need to be downstream of the oxidation catalyst 9 and may be determined by design means.

Effects of the Invention As described above, according to the toilet deodorizing device of the present invention, the following effects can be obtained.

(1) It is possible to provide a highly safe deodorizing device by simple means without the influence of residual ozone on the human body, which is the most problematic in a conventional deodorizing device utilizing ozone.

(2) It is possible to provide a deodorizing device that can be used semi-permanently without troublesome work such as replacement of a deodorant.

(3) As a secondary effect, there is a sterilizing effect on the inner space of the toilet and the wall surface of the toilet.

(4) As a secondary effect, noise can be reduced by setting the outlet to a position facing the inner surface of the toilet.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of an air passage when a toilet deodorizing apparatus according to one embodiment of the present invention is incorporated in a toilet, FIG. 2 is a partial cross-sectional view showing the configuration of the deodorizing apparatus, and FIG. FIG. 4 is a cross-sectional view showing the configuration of the toilet deodorizing device, FIG. 4 is a plan view of the device, and FIG. 5 is a configuration diagram showing the inside of the device. 1 ... toilet, 4 ... odor inlet, 5 ... toilet interior space,
6 ... outlet, 7 ... duct, 8 ... ozone generator, 9
... oxidation catalyst, 12 ... blower, 17 ... body.

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kazuaki Fujita 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-64-29531 (JP, A) −5461 (JP, U)

Claims (1)

(57) [Claims] 1. A body mounted and fixed on the rear upper surface of a toilet, and an odor inlet and an outlet at a position facing the inner surface of the toilet. An ozone generator is installed from the odor inlet side, and an oxidation catalyst and a blower are built in downstream of the odor inlet, and the odor generated in the inner space of the toilet bowl is sucked into the main body duct from the odor inlet, and the odor is generated by the ozone generated by the ozone generator. A deodorizing apparatus for a toilet, comprising a circulating air passage that oxidizes and deodorizes water and reduces excess ozone to oxygen by an oxidation catalyst and returns the oxygen from the outlet to the inner space of the toilet.