JPH06108509A - Deodorizing device for toilet - Google Patents

Abstract

PURPOSE:To adsorb three major offensive odor components efficiently and simultaneously by providing a deodorizing device with first and second deodorizing layers containing a specified components at the suction side of offensive odor and operating a deodorizing fan. CONSTITUTION:A deodorizing device 1 is located at the suction side of offensive odor, and provided with a first deodorizing layer 2 which contains a specified amount of sepiolite and a second deodorizing layer 3 which is located at the rear of the first deodorizing layer 2 and contains activated carbon. When a seating detection sensor is turned on to operate a deodorizing fan, offensive odor in a stool is sucked through the suction port of a deodorizing duct. The offensive odor sucked is adsorbed roughly completely by the first deodorizing layer 2 when it passes through a deodorizing cartridge, and hydrogen sulfide system odor is also adsorbed to some degree. Then it is adsorbed roughly completely by the second deodorizing layer 3, and sulfuric system odor is not discharged from the blowing port of the deodorizing duct any more.

Description

Detailed Description of the Invention

[0001]

[Object of the Invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorizing device for a toilet, and more particularly to a deodorizing device for absorbing the three major odor components of a toilet, hydrogen sulfide, ammonia and methyl mercaptan.

[0003]

2. Description of the Related Art Conventionally, this type of toilet deodorizing device has been
Only activated carbon was used. By this activated carbon, hydrogen sulfide (H ₂ S) and methyl mercaptan (CH ₃ SH), which cause stool odor, were adsorbed.

Further, ozone deodorization utilizing the oxidizing ability of ozone is known.

Furthermore, only a hydrous magnesium silicate clay mineral has been used in this type of toilet deodorizing device.
(Japanese Patent Laid-Open No. 61-136437)

[0006]

However, when only activated carbon is used in the above deodorizing device, hydrogen sulfide, which causes stool odor, can be adsorbed, but ammonia (NH ₃ ) that causes urine odor is absorbed. It is difficult to adsorb it, which gives the user an unpleasant feeling. Here, in order to improve the ability to adsorb ammonia, it is conceivable to impregnate an acidic chemical such as nitric acid, but in this case, the impregnation of the chemical conversely decreases the adsorption ability of hydrogen sulfide and methyl mercaptan.

Further, ozone deodorization not only makes the apparatus expensive, but also lacks safety.

Further, when only the hydrous magnesium silicate clay mineral is used, ammonia which causes the odor of urine can be adsorbed, but hydrogen sulfide (H ₂ S) which causes the odor of feces is absorbed.
In addition, it becomes difficult to adsorb methyl mercaptan (CH ₃ SH), which causes the user discomfort.

Therefore, the present invention has as its technical problem the efficient and simultaneous adsorption of the above-mentioned three major odorous components that cause odors of urine and feces.

[0010]

[Constitution of the invention]

[0011]

The technical means taken in the present invention to solve the above technical problems are as follows: a first deodorizing layer disposed on the odor suction side and containing a hydrous magnesium silicate clay mineral; The second deodorizing layer is provided after the first deodorizing layer and contains activated carbon.

[0012]

According to the above technical means, the ammonia, which causes the odor of urine, is excellent in the ability to adsorb ammonia.
Adsorbed by hydrous magnesium silicate clay mineral in the deodorization layer. At the same time, sulfur odors such as hydrogen sulfide that cause stool odor are adsorbed to some extent by the hydrous magnesium silicate clay mineral in the first deodorization layer, and thereafter, sulfur odors such as hydrogen sulfide are excellently adsorbed. Adsorbed by the second deodorizing layer. Here, even if the sulfur-based odor adsorbed by the hydrous magnesium silicate clay mineral is released with the passage of time, the sulfur-based odor is adsorbed by the second deodorization layer, so the sulfur-based odor is released to the outside of the device. Is prevented from being done.

[0013]

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

FIG. 1 is a sectional view of a deodorizing cartridge provided with a toilet deodorizing device according to this embodiment.

As shown in FIG. 1, the deodorizing device for toilet 1 is housed in a deodorizing cartridge 4. This toilet deodorizing device 1 comprises a first deodorizing layer 2 arranged on the odor suction side and containing 60% sepiolite, and a second deodorizing layer 3 arranged after the first deodorizing layer 2 and containing activated carbon. I have it. The second deodorizing layer 3 adsorbs hydrogen sulfide (H ₂ S) and methyl mercaptan (CH ₃ SH) that cause the smell of feces.

The sepiolite is a naturally occurring hydrous magnesium silicate clay mineral specially processed, and is composed of crystals having many tunnel structures. Furthermore,
Ammonia (NH ₃ ) that causes the odor of urine is adsorbed by the large number of pores. In addition, the deodorizing cartridge 4 before use that accommodates the deodorizing device 1 for the toilet
Is surrounded by a bag (not shown) made of aluminum laminate. This bag made of aluminum laminate prevents the gas in the air from penetrating into the inside of the bag, so that the deodorizing performance of the toilet deodorizing device 1 can be maintained even if the bag is left unopened for a long period of time. Will be done.

FIG. 2 is a perspective view showing the location of the deodorizing cartridge accommodating the deodorizing apparatus according to the present invention.

As shown in FIG. 2, a toilet bowl (not shown)
A deodorizing duct 6 having a deodorizing fan 7 therein is provided in a casing 5 provided at the upper rear end of the
The suction port 6a of the deodorizing duct 6 is opened downward in FIG. 2, and the odor in the toilet bowl is sucked by the operation of the deodorizing fan 7. In addition, the outlet 6 of the deodorizing duct 6
The opening b is open to the side surface bottom surface side of the casing 5, and the deodorizing cartridge 4 described above is inserted and attached to the air outlet 6b. A seating detection sensor 8 is provided on the side surface of the casing 5.
Is provided to detect whether or not the user is seated on the toilet seat 9.

With reference to FIGS. 1 and 2, the deodorizing action of the toilet using the deodorizing device for toilet 1 configured as described above will be described.

The user sits on the toilet seat 9 and the seating detection sensor 8
When is turned on, the deodorizing fan 7 operates and the deodorizing duct 6
The odor in the toilet is sucked through the suction port 6b. The sucked odor passes through the deodorizing cartridge 4 and is almost completely adsorbed by the deodorizing device 1 according to the present invention. Then, odorless air is exhausted from the outlet 6b of the deodorizing duct 6.

The operation of the toilet deodorizing device 1 according to the present invention will be described.

Ammonia, which causes the odor of urine in the odor, is almost completely adsorbed by the sepiolite of the first deodorizing layer 2. At the same time, the sulfur odor such as hydrogen sulfide, which causes the odor of feces, is adsorbed to some extent by the sepiolite of the first deodorizing layer 2 and then almost completely adsorbed by the second deodorizing layer 3. Here, even if the sulfur-based odor adsorbed by sepiolite is released with the passage of time, the sulfur-based odor is adsorbed by the second deodorization layer 3, so the deodorization device 1
No sulfur-based odor is released to the outside, and as a result, the sulfur-based odor is not exhausted from the outlet 6b of the deodorizing duct 6.

Next, an embodiment of the gist of the present invention will be described.

[Embodiment 1] 6 on the odor suction side of the resin case
Deodorizing paper 31.0Cm ³ containing 0% sepiolite embedded to prepare a sample embedded activated carbon 15.5cm ³ to the subsequent stage. Here, the deodorizing paper and the activated carbon were arranged so that the volume ratio was about 2: 1.

[Embodiment 2] 6 is provided on the odor suction side of the resin case.
A sample was prepared by embedding 23.8 cm ³ of deodorizing paper containing 0% sepiolite and then embedding activated carbon 23.8 cm ^{3 in the} subsequent stage. Here, the deodorizing paper and the activated carbon were arranged so that the volume ratio was about 1: 1.

An adsorption test was conducted on the samples according to Example 1 and Example 2 as follows, using the test apparatus shown in FIG.

The sample is placed in column 10 and then 2
Each odorous substance (ammonia, hydrogen sulfide, methyl mercaptan) was separately introduced into a 5 liter container 11. afterwards,
The odorous substances contained in the container 11 were supplied to the column at a flow rate of 5 l / min via the circulation path, the pump 12 and the flow meter 13 to measure the concentration of each odorous substance with the passage of time.

The above test results are shown in FIGS. Figure 4
FIG. 5 is a graph showing changes in the concentration of ammonia over time, FIG. 5 is a graph showing the changes in concentration of hydrogen sulfide over time, and FIG. 6 shows changes in the concentration of methyl mercaptan over time. It is a graph.

After the above measurement, the sample according to the first embodiment (when hydrogen sulfide was introduced) was taken out from the column 10 and the odor emitted from the sample was directly evaluated by the noses of 7 persons, and the odor intensity was 6 It was judged in stages. Here, the odor intensity 0 is "no odor", the odor intensity 1 is "a odor that can be finally sensed (detection threshold)", the odor intensity 2 is "the odor enough to know what odor is (recognition threshold)", and the odor intensity 3 Indicates "easy odor", odor intensity 4 indicates "strong odor", and odor intensity 5 indicates "especially strong odor". The result is shown in FIG. 7.
FIG. 7 is a graph showing the results of determining the odor released from the sample after the adsorption test. However, the odor intensity represented by the bar graph is the average value of the odor intensity determined by 7 persons.

The tests were evaluated with reference to FIGS.

As shown in FIG. 4, in Examples 1 and 2, the concentration of ammonia decreased with the passage of time, and finally the concentration decreased to a level at which the user hardly felt an odor. There is. Therefore, this example is proved to adsorb ammonia almost completely, and it can be said that the present example has an excellent ability to deodorize ammonia. It is determined that this is due to sepiolite in the deodorizing paper 2. Furthermore,
Comparing Example 1 and Example 2, it can be seen that Example 1 is superior in its ability to deodorize ammonia. This is considered to be because the sample of Example 1 contained more sepiolite.

As shown in FIG. 5, in Examples 1 and 2, the concentration of hydrogen sulfide decreased sharply with the passage of time. Therefore, in this example, it was proved that hydrogen sulfide was almost completely adsorbed, and it can be said that the ability to deodorize hydrogen sulfide was excellent. Further, it can be seen that the sample of Example 1 adsorbs hydrogen sulfide substantially in the same manner as in Example 2 although the amount of activated carbon 3 is smaller by 7.3 cm ³ than the sample of Example 2.

As shown in FIG. 6, in Examples 1 and 2, the concentration of methyl mercaptan decreased sharply with time as in the case of hydrogen sulfide. Therefore,
This Example was proved to adsorb methyl mercaptan almost completely, and can be said to be excellent in the ability to deodorize methyl mercaptan. Further, it can be seen that the sample of Example 1 adsorbs methyl mercaptan almost in the same manner as in Example 2, although the amount of activated carbon 3 is 7.3 cm ³ smaller than that of the sample of Example 2.

As shown in FIG. 7, in Example 1, the odor intensity of the sample when hydrogen sulfide was introduced was 2, and it was found that the sample did not smell much. This is because the activated carbon 3 adsorbs the sulfur-based odor adsorbed by the sepiolite even if the sulfur-based odor is released over time. Similar results can be obtained for Example 2.

From the above, in Examples 1 and 2, the odor of urine (ammonia) was almost completely deodorized by the sepiolite contained in the deodorizing paper 2, and the odor of feces (hydrogen sulfide, methyl mercaptan) was obtained. Is almost completely deodorized by the activated carbon 3. As a result, the user does not feel uncomfortable. In addition, since Example 1 is superior to Example 2 in deodorizing ability of ammonia and also excellent in deodorizing ability of hydrogen sulfide and methyl mercaptan as in Example 2, Example 1 is used as a deodorant for toilets. Deodorant 1 by
It can be said that it is preferable to use It is also possible to reduce the amount of the activated carbon 3 to be larger than that in Example 1 and increase the amount of the deodorizing paper 2 by that amount, but in that case, hydrogen sulfide and methyl mercaptan are not sufficiently adsorbed.

Next, a comparative example will be described.

[Comparative Example 1] 15.5 cm ^{3 of} activated carbon (3) was embedded in the odor suction side of the resin case, and 60 was placed in the subsequent stage.
Deodorizing paper containing 2% sepiolite (2) 31.0 cm
³ was embedded to prepare a sample. [Comparative Example 2] 37.0 cm ³ of activated carbon was embedded in a resin case to prepare a sample.

The samples according to these comparative examples were subjected to the deodorizing test as described above. The results are shown in FIGS. Further, FIG. 7 shows the result of determination of the odor intensity according to Comparative Example 1.

As shown in FIG. 7, in Comparative Example 1, the odor intensity of the sample when hydrogen sulfide was introduced was 3, indicating that the sample smelled a little. It is judged that this is because the sulfur-based odor adsorbed by the sepiolite located on the deodorizing exhaust side is released to the outside of the device over time.

As shown in FIGS. 4 to 6, Comparative Example 2 has an excellent ability to deodorize hydrogen sulfide and methyl mercaptan, but hardly deodorizes ammonia. It is judged that this is because the deodorizing paper 2, that is, sepiolite is not used.

When the sepiolite used in this example is exposed to fresh air, it absorbs odor components (mainly ammonia) which are absorbed to the extent that no odor is felt.
Absorption performance is maintained for a long time. As the hydrous magnesium silicate clay mineral, it is also possible to use silotile, palygorskite, raffinite, etc. in addition to the above sepiolite.

[0042]

The present invention has a first deodorizing layer disposed on the odor suction side and containing a hydrous magnesium silicate clay mineral,
Since the second deodorizing layer containing activated carbon is provided after the first deodorizing layer, the following effects can be obtained.

The odor of urine and feces can be absorbed almost certainly. Furthermore, with the passage of time, the sulfur-based odor released by the hydrous magnesium silicate clay mineral is almost certainly adsorbed by the second deodorizing layer, so that the release of the sulfur-based odor outside the apparatus is prevented. As described above, it is possible to prevent the user from feeling uncomfortable.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a toilet deodorizing apparatus according to this embodiment.

FIG. 2 is a perspective view showing a mounting location of a deodorizing cartridge.

FIG. 3 is a schematic view of an adsorption test device.

FIG. 4 is a graph showing changes in the concentration of ammonia over time.

FIG. 5 is a graph showing changes in hydrogen sulfide concentration over time.

FIG. 6 is a graph showing changes in the concentration of methyl mercaptan over time.

FIG. 7 is a graph showing the odor intensity of each sample when hydrogen sulfide is introduced.

[Explanation of symbols]

 1 Toilet deodorizing device 2 1st deodorizing layer 3 2nd deodorizing layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Koichi Hayashi, Koichi Hayashi, 2-1-1 Asahi-machi, Kariya city, Aichi Prefecture Aisin Seiki Co., Ltd. (72) Shinji Kawai 2-1-1, Asahi-machi, Kariya city, Aichi prefecture Aisin Seiki Co., Ltd. (72) Inventor, Ikuya Iwata, 5-1, Koiemoto-cho, Tokoname-shi, Aichi Stock Company, Inax Co., Ltd. (72) Inventor, Yutaka Mizutani, 5-1-1, Koiemoto-cho, Tokoname-shi, Aichi Inax Co., Ltd. (72) Inventor, Takanori Takashi, 5-1, Koi Ehonmachi, Tokoname-shi, Aichi Stocks Inax Co., Ltd. (72) Nobuo Soga, 5-1-1, Koiemoto-cho, Tokoname-shi, Aichi Shares, Inax, Inc. ( 72) Inventor Seiji Onoda 1 of 41 Yokomichi, Nagakute-cho, Aichi-gun, Aichi-gun, Toyota Central Research Institute Co., Ltd. (72) Invention Kazuhiro Fukumoto Hiro 41, Nagakute-cho, Aichi-gun, Aichi Prefecture, 1 41 Yokochi, Yokota Central Research Institute, Ltd. (72) Inventor, Tadashi Sugiura 1-41, Yokochi, Nagakute, Aichi-gun, Aichi Toyota Central Research Institute, Inc.

Claims (1)

[Claims] 1. A toilet having a first deodorizing layer disposed on the odor suction side and containing a hydrous magnesium silicate clay mineral, and a second deodorizing layer disposed after the first deodorizing layer and containing activated carbon. Deodorizing device.