JP2008223416A - Drain piping, sink and built-in kitchen unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide drain piping capable of decomposing an organic compound without occupying the space around the drain piping. <P>SOLUTION: The built-in kitchen unit 1 comprises a top panel 2 extending on a surface of the built-in kitchen unit 1, a sink 3 provided in the top panel 2, a drain outlet 4 formed in a bottom face of the sink 3, and the drain piping 10 connected to the sink 3 via the drain outlet 4. The drain piping 10 has a polyaniline film 30 formed on a surface of the inside of a trap 20. When the water flown from the drain outlet 4 comes into contact with the polyaniline film 30, the polyaniline film 30 gives electrons to the dissolved oxygen dissolved in the water, so that activated oxygen may be continuously generated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drainage pipe for discharging water, a sink provided with the drainage pipe, and a system kitchen provided with the sink.

  Conventionally, sinks such as system kitchens have been provided with drainage pipes. When cooking utensils, tableware, foodstuffs, etc. are washed in the sinks, the water used for washing is discharged through the drainage pipes. . This wastewater contains organic compounds such as fats and oils and carbohydrates, and such organic compounds adhere to the inner surface of the drainage pipe, causing odor and bacterial growth.

In order to solve such a problem, an apparatus has been proposed in which ozone and active oxygen are generated by a discharge device attached in the vicinity of a drain outlet, and sterilization and deodorization are performed using them (see Patent Document 1). In this device, an ozone stream and an active oxygen stream are generated to achieve sterilization of bacteria and the like generated in the drain pipe, and deodorization by decomposing molecules that cause odor.
Registered Utility Model No. 3062251

  The apparatus mentioned above makes ozone and active oxygen reach a drain outlet by carrying out ozone and active oxygen on an airflow, and discharge | releases it toward a drain outlet. Therefore, it is necessary to install the apparatus mentioned above in the place near a drain outlet. However, the space around the drainage pipe of the sink usually has as much space as possible so that the work there is comfortable, but if the above-mentioned device is installed around the drainage pipe, the work on the sink will be performed In some cases, the device becomes an obstacle and the work cannot be performed comfortably.

  This invention is made | formed in view of such a problem, and it aims at providing the drainage pipe, the sink, and the system kitchen which can decompose | disassemble an organic compound, without using the space around a drainage pipe.

The drainage pipe according to claim 1, which has been made to solve the above-described problem, has a polyaniline film formed on the inner surface thereof.
When water contacts, the polyaniline film gives electrons to dissolved oxygen dissolved in the water and continuously generates superoxide anion radicals (.O ₂ ⁻ ) as active oxygen. A part of this superoxide anion radical (hereinafter simply referred to as active oxygen) reacts as shown in the following formula to generate hydrogen peroxide.
2 ・ O ₂ ⁻ + 2H ⁺ → H ₂ O ₂ + O ₂
The active oxygen and hydrogen peroxide water generated in this way have a function of oxidizing and decomposing organic compounds.

  Therefore, if the drainage pipe is formed with a polyaniline film as described above, when the drainage flows into the drainage pipe, active oxygen and hydrogen peroxide water can be generated when the drainage and the polyaniline film come into contact with each other. . This eliminates the need to install a separate device for generating ozone and active oxygen, and decomposes organic compounds contained in the drainage and organic compounds attached to the drainage pipe without using the space around the drainage pipe. Can do.

  As described above, since the organic compound in the drainage pipe can be decomposed, the organic compound which causes generation of odor and bacterial growth can be removed, so that the periphery of the drainage pipe can be kept clean.

  This polyaniline film generates active oxygen by giving electrons possessed by the polyaniline film to dissolved oxygen in the waste water. Therefore, facilities such as a power source for supplying a reduction current to the polyaniline film are unnecessary, and the above-described effects can be obtained without consuming energy such as electricity.

  In addition, as for the kind of specific polyaniline, what consists of a polyaniline or the derivative of polyaniline shown by following Chemical formula 1 or Chemical formula 2 can be used.

上記化学式において、ｎは２以上５０００以下の範囲の整数である。また、ｘとｙは、ｘ＋ｙ＝１および０≦ｙ≦０．５を同時に満たす数である。

In the above chemical formula, n is an integer in the range of 2 or more and 5000 or less. X and y are numbers satisfying x + y = 1 and 0 ≦ y ≦ 0.5 simultaneously.

  Here, in order to hold many electrons for generating active oxygen in the polyaniline film described above, the polyaniline film contains an organic acid as a dopant as in the drainage pipe according to claim 2. It is good to do.

In the drainage pipe configured as described above, the doped organic acid emits electrons, so that the total amount of electrons that can be emitted as the whole polyaniline film increases.
Therefore, compared to a polyaniline film that is not doped with an organic acid, electrons can be emitted for a longer period of time to generate active oxygen, so that the organic compound can be decomposed for a longer period of time.

  As polyaniline doped with an organic acid, polyaniline represented by the following chemical formula 3 or chemical formula 4 or a polyaniline derivative can be used.

上記化学式において、Ａは陰イオンを表す。ｎは２以上５０００以下の範囲の整数である。また、ｘとｙは、ｘ＋ｙ＝１および０≦ｙ≦０．５を同時に満たす数である。

In the above chemical formula, A represents an anion. n is an integer ranging from 2 to 5000. X and y are numbers satisfying x + y = 1 and 0 ≦ y ≦ 0.5 simultaneously.

  As described above, the organic acid may be a compound containing at least one of a sulfonic acid group, a phosphonic acid group, a nitric acid group, a carboxyl group, a sulfinic acid group, and a hydroxyl group. By using such an organic acid, the amount of electrons emitted from the polyaniline film can be increased.

  By the way, the polyaniline film may be formed in any part of the drainage pipe, but if the drainage pipe is provided with a trap part for preventing the back flow of odor, the trap as in the drainage pipe according to claim 4 is used. It may be formed in the part.

  Usually, a part of the waste water flowing into the drain pipe is collected in the trap portion. Therefore, if the drainage pipe has the above-described configuration, the contact time between the water accumulated in the trap portion and the polyaniline film is increased, so that a large amount of active oxygen is generated and the ability to decompose organic compounds is further improved. . Moreover, since water always stays in the trap part, the organic compound is also likely to accumulate, but the effect of sterilization and deodorization can be further improved by reliably decomposing the organic compound in that part.

  Moreover, as a structure which forms the polyaniline film | membrane in drainage piping in a different place from the above, you may form in the part located upstream from a trap part like the drainage piping of Claim 5.

  If it is the drainage pipe comprised in this way, active oxygen will be generated in the upstream of the drainage pipe. Therefore, since the organic compound from the upstream to the downstream of the drainage pipe can be decomposed, the effect of sterilization and deodorization can be obtained in the entire drainage pipe. In addition, the polyaniline film formed on the pipe above the trap portion comes into contact with the wastewater only when the wastewater passes through that portion. Therefore, since the time for generating active oxygen in contact with the waste water is shorter than that of the polyaniline film formed in the trap portion, active oxygen can be generated for a longer period.

  Moreover, the drainage pipe of the present invention, as described in claim 6, can be used as a drainage pipe of a sink connected to the drain outlet of the sink, thereby decomposing organic compounds contained in the drainage flowing into the sink. It is possible to suppress the generation of malodors in the sink.

  Moreover, the sink of Claim 7 is equipped with the drain piping in any one of Claims 1-5 mentioned above, The effect of the drain piping of Claims 1-5 is provided by the sink. Obtainable.

  Moreover, the system kitchen of Claim 8 is equipped with the sink of Claim 7 mentioned above, The effect of the drain piping of Claims 1-5 can be acquired by the system kitchen. .

Embodiments of the present invention will be described below with reference to the drawings.
(1) Overall Configuration As shown in FIG. 1, the system kitchen 1 of the present invention is formed on the top plate 2 that spreads on the top surface of the system kitchen 1, the sink 3 provided on the top plate 2, and the bottom surface of the sink 3. And a drain pipe 10 connected to the sink 3 through the drain port 4.

  Among these, as shown in FIGS. 1 and 2, the drain pipe 10 is formed with a trap 20 having a shape in which the pipe is bent and the downstream side is returned to a higher position from the ground than the upstream side. The water in the sink 3 flows into the drain pipe 10 as drainage through the drain port 4 in the direction of the arrow in FIG. 2 and is discharged to the outside, but part of the drainage remains in the trap 20.

Further, in this drain pipe 10, a polyaniline film 30 is formed on the inner surface of the trap 20.
(2) Production of drainage pipe 10 First, polyaniline is synthesized. 50 ml of 1 mol hydrochloric acid aqueous solution containing 12 g of ammonium persulfate sufficiently cooled in an ice-cooled bath was gradually added to 300 ml of 1 mol hydrochloric acid aqueous solution containing about 2.8 g of aniline which had been cooled, and the cooling continued for 1 hour 30 minutes. Stir. The solution turned from colorless to greenish blue. At this time, hydrochloric acid-doped polyaniline in which the anion A was a chlorine ion in the chemical formula 3 was generated in the solution (the above-described chemical formula 3).

  The product produced by the above method was suction filtered and washed well with 1 molar aqueous hydrochloric acid and acetone. Next, this was suspended in 28% aqueous ammonia and stirred for 24 hours to obtain a dedope type polyaniline represented by Chemical Formula 1 (Chemical Formula 1 described above).

  Next, 4 g of the dedope-type polyaniline powder obtained by the above synthesis method is gradually added to 100 ml of NMP (N-methyl-2-pyrrolidone) in which 1 g of camphorsulfonic acid is dissolved so as not to aggregate. A 4% doped polyaniline solution was obtained by dissolution.

Next, the 4% polyaniline solution was applied to the surface inside the drainage pipe 10, put in a thermostatic bath maintained at 140 ° C. and dried for 20 minutes to form a polyaniline film 30 on the surface.
(3) Action / Effect When the water (drainage) flowing from the drain port 4 comes into contact with the polyaniline film 30, the polyaniline film 30 gives electrons to the dissolved oxygen dissolved in the water, and superoxide anion radical (.O ₂ ⁻ ) Is generated continuously. A part of this superoxide anion radical (hereinafter simply referred to as active oxygen) reacts as shown in the following formula to generate hydrogen peroxide.
2 ・ O ₂ ⁻ + 2H ⁺ → H ₂ O ₂ + O ₂
The active oxygen and hydrogen peroxide water generated as described above oxidize and decompose the organic compounds adhering to the inner surface of the drain pipe 10.

  Therefore, in the drainage pipe 10 of the present embodiment, when drainage flows into the drainage pipe 10, active oxygen and hydrogen peroxide water can be generated when the drainage and the polyaniline film 30 come into contact with each other. It is not necessary to install a separate device for generating active oxygen. Therefore, the organic compound contained in the waste water and the organic compound adhering in the drain pipe 10 can be decomposed without using the space around the sink 3 in the top plate 2. As a result, organic compounds that cause odor generation and bacterial growth can be removed, so that the periphery of the drain pipe 10 can be kept clean.

  In addition, the polyaniline film 30 generates active oxygen by giving electrons contained in the polyaniline film 30 to dissolved oxygen in the waste water. Therefore, facilities such as a power source for supplying a reduction current to the polyaniline film 30 are unnecessary, and the above-described effects can be obtained without consuming energy such as electricity.

  Further, since the doped sulfonic acid emits electrons, the total amount of electrons that can be emitted as a whole is increased, and the electrons are emitted over a longer period of time than the polyaniline film 30 that is not doped with sulfonic acid. Thus, active oxygen can be generated, so that the organic compound can be decomposed for a longer period of time.

  Further, in the case of the drainage pipe 10 having the above-described configuration, since the time for which the drainage accumulated in the trap 20 and the polyaniline film 30 are in contact with each other becomes long, a large amount of active oxygen is generated, and the ability to decompose organic compounds more. improves. In addition, since the water always remains in the trap 20, the organic compound easily collects in the trap 20, but the effect of sterilization and deodorization can be further improved by reliably decomposing the organic compound in that portion.

Moreover, since the drainage pipe 10 of the present embodiment is connected to the drainage outlet of the sink in the system kitchen 1 and is used to discharge the drainage of the sink, the organic compounds contained in the drainage flowing into the sink are decomposed. It is possible to suppress the generation of bad odor and the growth of bacteria in the sink.
(4) Test to confirm decomposition effect Drainage pipe piece (2 g of dedoped polyaniline, equivalent to 0.5 g of camphor sulfonic acid) and 20 g of water produced by the method of (2) above are placed in a 500 mL container. Then, tobacco smoke was introduced and sealed.

When the sensory test was carried out after leaving for a day, the odor disappeared.
(5) Modifications The embodiment of the present invention has been described above. However, the present invention is not limited to the above embodiment, and can take various forms as long as it belongs to the technical scope of the present invention. Needless to say.

  For example, in the above embodiment, the configuration in which the polyaniline film 30 is formed on the inner surface of the trap 20 has been illustrated. However, the specific position is not particularly limited as long as it is formed inside the drain pipe 10.

For example, the polyaniline film 30 may be formed in a portion (upstream portion 22 in FIG. 2) located upstream from the trap 20.
If it is the drainage pipe 10 comprised in this way, active oxygen will generate | occur | produce in the upstream part 22 of the drainage pipe 10. FIG. Therefore, since the organic compound can be decomposed from the upstream portion 22 of the drainage pipe 10 to the downstream thereof, sterilization and deodorizing effects can be obtained in the entire drainage pipe 10. In addition, the polyaniline film 30 formed in the upstream portion 22 contacts the wastewater only when the wastewater passes through that portion. Therefore, since the time for generating active oxygen in contact with the wastewater is shorter than that of the polyaniline film 30 formed on the trap 20, active oxygen can be generated for a longer period of time.

Further, the polyaniline film 30 may be formed on both the trap 20 and the upstream portion 22.
Moreover, in the said embodiment, the structure which uses a sulfonate as a dopant seed | species was illustrated. However, the sulfonate is not limited as long as electrons can be emitted in a state where the polyaniline film 30 is doped.

For example, sulfonic acid groups, phosphonic acid groups, nitric acid groups, carboxyl groups, sulfinic acid groups, and hydroxyl group compounds may be used.
Moreover, in the said embodiment, although the drainage pipe 10 illustrated the structure connected to the sink provided in the system kitchen 1, it may be connected to the sink which is not a system kitchen, and the drainage ditch of a bath, The structure connected to the drain outlet of a toilet may be sufficient.

The perspective view which shows the system kitchen of this invention Side view showing drain piping

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... System kitchen, 2 ... Top plate, 3 ... Sink, 4 ... Drain outlet, 10 ... Drain piping, 20 ... Trap, 22 ... Upstream part, 30 ... Polyaniline membrane

Claims (8)

A drainage pipe for discharging water,
The drain pipe is characterized in that a polyaniline film is formed on the inner surface of the drain pipe. The drainage pipe according to claim 1, wherein the polyaniline film contains an organic acid as a dopant. The drain pipe according to claim 2, wherein the organic acid is a compound containing at least one of a sulfonic acid group, a phosphonic acid group, a nitric acid group, a carboxyl group, a sulfinic acid group, and a hydroxyl group. The drain pipe has a trap portion for storing water,
The drainage pipe according to any one of claims 1 to 3, wherein the polyaniline film is formed in the trap portion. The drain pipe has a trap portion for storing water,
The drainage pipe according to any one of claims 1 to 3, wherein the polyaniline film is formed in a portion of the drainage pipe located upstream from the trap portion. The drainage pipe according to any one of claims 1 to 5, wherein the drainage pipe is used for draining a sink. The sink provided with the drainage pipe in any one of Claims 1-5. A system kitchen comprising the sink according to claim 7.

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