JP2822740B2 - Toilet seat device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet seat device having a deodorizing function for deodorizing malodorous components such as hydrogen sulfide, ammonia, various mercaptans and amines released by defecation.

[0002]

2. Description of the Related Art In recent years, deodorizing devices have been introduced into household appliances, and among them, a toilet seat device having a deodorizing function in a toilet, which is a source of malodor, has been proposed.

[0003] This type of toilet seat with a deodorizing function is disclosed, for example, in JP-A-63-14672. The configuration will be described with reference to FIG.

In FIG. 1, reference numeral 1 denotes a deodorizing device,
Inside a duct 5 having a suction port 3 opening to the rear or side of the inside and a discharge port 4 facing the toilet, a blower 6 composed of a fan motor and a deodorizing body 7 composed of activated carbon for purifying odor components are provided. Have been.

[0005] In the above configuration, when a person sits on the toilet for use, the blower 6 rotates to generate an air flow from the suction port 3 to the discharge port 4, and the air containing the malodorous component at the time of defecation is sucked from the suction port 3. Then, when passing through the deodorizing body 7, the offensive odor component is adsorbed and purified, and is discharged from the outlet 4 into the toilet for deodorization.

[0006]

In such a conventional toilet seat device, when a person sits down on the toilet, the odor filled in the toilet tub is sucked by the blower 6 and passed through the deodorizing body 7, thereby causing a bad odor. It is a configuration that adsorbs components and deodorizes,
Since a physical adsorbent such as activated carbon is used as the deodorant 7, the activated carbon needs to be replaced when the adsorption saturation is reached. In addition, when approaching the adsorption saturation state, the odor component may be desorbed in reverse, and the concentration of the malodorous atmosphere will increase and the discomfort will increase. Further, in order to maintain the deodorizing effect over a long period of time, the amount of adsorption must be increased, that is, the capacity of the adsorption member must be increased, which has led to an increase in the size of the entire apparatus.

As another means, a deodorizing device by masking using a fragrance or a conventionally known strong oxidizing power of ozone is used to decompose residual ozone harmful to the human body. A device equipped with an ozone deodorizer combined with an ozone decomposition catalyst has been put into practical use, but in the former case it is necessary to change the fragrance, and in the latter case an ozone generator for generating ozone and Therefore, there is a problem that a high-voltage electric circuit or the like is required, and the apparatus becomes complicated and the cost increases.

[0008] The present invention is to solve the above problems,
By deodorizing and oxidatively decomposing malodorous components in a normal temperature atmosphere, the deodorizing effect can be maintained for a long period of time, and the miniaturization of the deodorizing member can achieve the downsizing of the entire device. It is an object of the present invention to provide an attached toilet seat device.

[0009]

To achieve the above object, a toilet seat device according to the present invention comprises a duct having an inlet, an outlet and a deodorant inlet, a blower provided in the duct, The first deodorant body which is detachably mounted in the duct from the deodorant inlet, and which mainly contains manganese and iron metal oxides, and a porous zeolite body having a ceramic fiber skeleton as a metal of gold and iron A second deodorizing body containing an oxide, and a deodorizing body unit comprising a case containing the first and second deodorizing bodies and having a ventilation direction of an air flow from the suction port to the discharge port. It is provided and configured.

[0010]

According to the toilet seat apparatus of the present invention, the odor generated at the time of defecation is sucked from the suction port and passes through the duct to reach the first and second deodorizing bodies. At this time, the sulfur-containing compounds such as hydrogen sulfide and mercaptan in the malodorous components are efficiently adsorbed on the surface of the deodorant by the chemical adsorption of the first deodorant composed of manganese and iron metal oxides. Nitrogen-containing compounds such as ammonia and various amines are adsorbed on the surface of the second deodorant in which the zeolite porous material contains a metal oxide of gold and iron, and is efficiently deodorized.

Here, the first deodorant composed of the manganese and iron metal oxides adsorbs sulfur-containing compounds efficiently, but has a low adsorption capacity for nitrogen-containing compounds. On the other hand, the second deodorant in which the porous zeolite contains a metal oxide of gold and iron, on the contrary, adsorbs the nitrogen-containing compound efficiently, but hardly adsorbs the sulfur-containing compound. In general, a malodor is a complex odor in which a nitrogen-containing compound and a sulfur-containing compound are mixed, and by combining the first deodorant and the second deodorant, a deodorizing effect can be obtained for a wide range of malodors.

Although the mechanism in this regard has not been sufficiently elucidated, the surface of the deodorant and / or the adsorbed malodorous component is activated for the sulfur-containing compound by the interaction of manganese and iron metal ions, For nitrogen-containing compounds, the oxidative decomposition reaction takes place at room temperature in the presence of oxygen due to the interaction between metal ions of gold and iron and the interaction of active oxygen taken into the porous zeolite, and the malodorous component gradually decreases. It is decomposed and desorbed and / or dissociated and adsorbed. As a result, the adsorption receiving site is reproduced, and it becomes possible to adsorb a new malodorous component. Therefore, the deodorizing effect is maintained for a long time.

[0013] The first and second deodorizing bodies described above can maintain the deodorizing effect and reduce the size of the deodorizing body, and can deodorize by passing air containing malodorous components into contact with the atmosphere. The toilet seat device with a deodorizing function can recover the deodorizing ability only when the toilet seat device is not used, that is, when the toilet seat device is not used.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of a main part of a toilet seat device showing an embodiment of the present invention, FIG. 2 is an enlarged perspective view of a deodorizing body, FIG. 3 is a cross-sectional view of a deodorizing body, and FIG. It is. In the figure, 8 is a toilet bowl, 9 is a toilet seat, 10 is a toilet lid, and 11 is a toilet seat device. Reference numeral 12 denotes a duct, which has a suction port 13, a discharge port 14, and a deodorant input port 15 for sucking air containing a malodorous component in the toilet bowl 8, and a blower 16 for sucking odor is provided inside thereof. ing. 17 is a deodorant inlet 15
Is a deodorizing body unit detachably mounted in the duct 12 from the outside, and mainly contains metal oxides of manganese and iron provided on the upstream side with respect to the passing airflow (hereinafter referred to as M).
a first deodorizer 18 (hereinafter referred to as an n-Fe catalyst) and a second deodorant 18 (hereinafter referred to as a zeolite / Au-Fe catalyst) containing a metal oxide of gold and iron in a porous zeolite having a ceramic fiber skeleton. It comprises a deodorizing body 19 and a case 20 containing the first and second deodorizing bodies 18 and 19. On the outer peripheral surface of the first and second deodorizing bodies 18 and 19, a belt-like shape which functions to prevent odor from leaking from a gap formed between the inner surface of the case 20 and the deodorizing bodies 18 and 19 and act as a cushioning material. An elastic member 21a is provided between the duct 20 and the outer surface of the case 20. The first and second deodorizing bodies 18 and 19 are formed in a honeycomb shape,
The air is arranged to be able to pass in the direction indicated by the arrow in FIG.

The flange portion 22 of the case 20 and the duct 12
In the periphery of the deodorant inlet 15, there is provided a fitting portion 25 composed of a concave portion 23 and a convex portion 24 to limit the arrangement direction of the first and second deodorizing bodies 18 and 19 with respect to the passing air flow. ing.

Reference numeral 26 shown in FIG. 4 is a hot water washing nozzle for washing the anus. The toilet seat device 11 has a hot water washing function and a drying device (not shown) for drying around the anal part after washing. ing.

In the above configuration, the operation of this embodiment will be described next.
The operation will be described. When the toilet seat is seated at the time of defecation, the blower 16 operates, and a flow of air containing a malodorous component from the suction port 13 to the discharge port 14 is generated. Generally, the malodorous component at the time of defecation is a compound odor in which a sulfur-containing compound represented by hydrogen sulfide and mercaptans and a nitrogen-containing compound represented by ammonia, amines, indole and the like are mixed.

When the air containing the malodorous component passes through the duct 12, it first comes into contact with the surface of the first deodorizing body 18. At this time, the sulfur-containing compound in the malodorous component is selectively adsorbed on the surface of the first deodorant 18. On the other hand, the binding force of the nitrogen-containing compound to the first deodorant 18 is relatively weak, and passes without being adsorbed. The passed nitrogen-containing compound is then converted into the second deodorant 19
And is adsorbed on the surface of the zeolite / Au-Fe-based catalyst. Here, the zeolite selectively adsorbs molecules having a large dipole moment by electrostatic attraction due to cations. In addition, since the metal oxides of gold and iron, which are the catalyst components, are contained in the porous zeolite body having the ceramic fiber skeleton, the catalyst active points are present not only on the surface of the catalyst but also on the inside thereof, so that the odorous components can be adsorbed. . The compound odor can be efficiently deodorized by these two types of deodorants,
The odor is deodorized and released into the toilet. At this time, since the deodorizing bodies 18 and 19 are formed in a honeycomb shape, the pressure loss during the passage of air can be reduced.

Although the mechanism in this regard has not been fully elucidated, the interaction between manganese and iron metal ions activates the surface of the deodorant and / or adsorbed malodorous components against sulfur-containing compounds, For nitrogen-containing compounds, the oxidative decomposition reaction takes place at room temperature in the presence of oxygen due to the interaction between metal ions of gold and iron and the interaction of active oxygen taken into the porous zeolite, and the malodorous component gradually decreases. It is decomposed and desorbed and / or dissociated and adsorbed. As a result, the adsorption receiving site is reproduced, and it becomes possible to adsorb a new malodorous component. Therefore, the deodorizing effect is maintained for a long time. At this time, the reaction rate is relatively slow, and the malodorous component is once adsorbed on the surface of the deodorant, and then reacts gradually. Therefore, it is suitable for deodorization of a relatively low concentration, and also suitable for intermittent deodorization instead of continuous deodorization. That is, it is necessary to leave in the atmosphere for a predetermined time for oxidative decomposition. Practically, the average number of families per household is 4, and when the stool use time is 10 minutes / person and the girls urine use time is 2 minutes / person, the operation time of the toilet seat device is about 1
Time / day. That is, the non-use time of the toilet seat device is 23 hours / day, which is the above-mentioned atmosphere leaving time.

Further, sulfur S contained in the sulfur-containing compound generally becomes a poisoning component for catalyst components such as metal oxides of gold and iron. In this embodiment, since the first deodorant 18 for adsorbing the sulfur-containing compound is disposed upstream with respect to the passage of the malodorous fluid, the second deodorant 19 contacts the second deodorant 19 after adsorbing the sulfur-containing compound. The reliability of the deodorizing body 19 against poisoning by sulfur S can be improved. Further, as shown in FIG. 2, the concave portion 23 is provided in the flange portion 22 of the case 20 and the convex portion 24 is provided in the periphery of the deodorant inlet 15 to form the fitting portion 25. Is prevented from being mistaken.

In addition, the malodorous component generally contained in defecation is
There are many sulfur-containing compounds such as hydrogen sulfide and methyl mercaptan, while relatively few nitrogen-containing compounds such as ammonia and amines. Focusing on this, as shown in FIG. 3, the length T ₁ of the first deodorizing body 18 is set to be larger than the length T ₂ of the second deodorizing body 19 to reduce the volume of the first deodorizing body 18. By setting a large value, the sulfur-containing compound can be more effectively deodorized, and the deodorization life can be adjusted to be equivalent to that of the second deodorant 19 according to the odor concentration.

[0023]

As described above, the toilet seat device of the present invention comprises a first deodorant mainly composed of a metal oxide of manganese and iron, and a porous zeolite having a ceramic fiber as a skeleton. A second deodorizing body containing a metal oxide, and a deodorizing body unit composed of a case containing the first and second deodorizing bodies are detachably mounted in an air duct, and The effect is obtained. (1) Oxidative decomposition, dissociation and adsorption of sulfur-containing compounds contained in defecation odor at room temperature by the interaction of manganese and iron metal ions, and the interaction of nitrogen-containing compounds with gold and iron metal ions. Reaction occurs and the adsorption site is reproduced. Therefore, the deodorizing life is remarkably improved as compared with a conventional deodorant such as activated carbon, and replacement in a short time is not required, so that usability can be improved. In addition, the volume of use of the deodorant can be reduced, and an auxiliary member such as an ozone generator is not required, so that the size and cost of the toilet seat device can be reduced. (2) Since a deodorizing body for effectively deodorizing is provided for each of the sulfur-containing compound and the nitrogen-containing compound, the deodorizing efficiency is high with respect to feces and urine odor, and the compound odor is effectively deodorized. (3) Since the first deodorant and the second deodorant are separately provided, the volume of the deodorant can be adjusted so that deodorization can be performed most effectively according to the components in the complex odor and the odor concentration. The size of the deodorant can be easily set according to the intended use.

[Brief description of the drawings]

FIG. 1 is a sectional view of a toilet seat device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the deodorizing unit.

FIG. 3 is an enlarged sectional view of the deodorizing body unit.

FIG. 4 is an external perspective view of the toilet seat device.

FIG. 5 is a sectional view of a conventional toilet seat device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Toilet seat device 12 Duct 13 Suction port 14 Discharge port 15 Deodorant input port 16 Blower 17 Deodorizing body unit 18 First deodorizing body 19 Second deodorizing body 20 Case 25 Fitting part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁶ , DB name) E03D 9/00-9/16

Claims (4)

(57) [Claims] 1. A duct having an inlet, an outlet, and a deodorant inlet, a blower provided in the duct, and a manganese and iron being detachably mounted in the duct from the deodorant inlet. A first deodorant containing a metal oxide as a main component, a second deodorant containing a metal oxide of gold and iron in a zeolite porous body having a ceramic fiber skeleton, and the first and second deodorants. A toilet seat device comprising a deodorizing body unit comprising a case enclosing the deodorizing body, and having a ventilation direction of an air flow from the suction port to the discharge port. 2. The apparatus according to claim 1, wherein the first deodorizing member is disposed upstream of the air flow sucked from the suction port, and the second deodorizing member is disposed downstream of the first deodorizing member. The toilet seat device according to 1. 3. The toilet seat device according to claim 1, wherein a fitting portion for limiting a mounting direction of the deodorizing unit is provided around the deodorizing agent inlet of the case and the duct of the deodorizing body. 4. The toilet seat apparatus according to claim 1, wherein the volume of the first deodorizing body is larger than that of the second deodorizing body.