JPH09225182A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the de- and discoloration of a color patterned material, the yellowing of silk and the oxidation of an organic fiber surface working material, etc., by dispersing or dissolving a reducing agent for reducing free chlorine contained in water to supply water or washing liquid in a washing tank. SOLUTION: A drawer-like case 16 is disposed on the lower part of a water supply nozzle 15 and the shaped body 17 of a reducing agent is mounted on the projection part of the case 16. Calcium sulphite is a main component of the shaped body 17 and it is solidified with a binder to be slowly dissolved in water. Further, a water supply port 18 is disposed at the lower part. At the time of the water supply in a washing process or a rinsing process, the reducing agent is dispersed or dissolved at the time of supplying water to the washing tank 19 by opening a water supply valve 2 and dispersed or dissolve in the washing liquid inside the washing tank 19. At this time, the density of dispersing or dissolving the reducing agent is set in relation with a water supply amount so as to be equal to or lower than the density (about 10ppm) capable of removing the residual free chlorine of 4ppm. Also, the shaped body 17 is constituted so as to become smaller in size along with the water supply and the exchange time period of the shaped body 17 is recognized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine capable of removing free chlorine contained in water or washing liquid supplied to a washing tub.

[0002]

2. Description of the Related Art Conventionally, a technique for removing residual free chlorine in tap water supplied to a washing machine is disclosed in Japanese Patent Laid-Open No. Hei 02-136170.
JP, JP 06-154474, JP, 06
Those described in Japanese Patent Publication No. 238092 and the like are known.

FIG. 4 is disclosed in Japanese Unexamined Patent Publication No. 02-136170, in which an internal hose 3 is connected to a water supply valve 2 to which a water supply hose 1 is connected, and a water supply path switching section 4 is connected to this internal hose 3. Then, the tap water from which residual free chlorine has been removed is supplied from the water supply port 6 into the water tank through the residual free chlorine removing device 5 having a cartridge (not shown) filled with the free chlorine removing material by the water supply path switching unit 4. It is configured to be possible.

FIG. 5 is disclosed in Japanese Unexamined Patent Publication No. 06-154474, in which a water supply hose 1 is connected to a double water supply valve 7, and one of the double water supply valves 7 is filled with a free chlorine removing material 8. The residual free chlorine removing device 10 having the built-in cartridge 9 is connected, and the inflow port 1 of the residual free chlorine removing device 10 is connected.
The tap water from 1 is discharged from the outlet 12 through the free chlorine removing material 8, and the tap water from which the residual free chlorine is removed can be supplied from the water supply port 6 into the water tank.

Further, FIG. 6 is disclosed in Japanese Patent Laid-Open No. 06-238092, in which a cartridge 13 filled with a free chlorine removing agent 8 is provided in a water supply path for supplying water through an internal hose 3 connected to a water supply valve 2. The filter case 14 to be stored is detachably attached in a drawer shape, and when the filter case 14 is attached, tap water from which residual free chlorine is removed is supplied to the water tank.

[0006]

[Patent Document 1] Japanese Patent Application Laid-Open No. 02-1361
In the configuration disclosed in Japanese Patent Laid-Open No. 70-70, and Japanese Patent Application Laid-Open No. 06-154474, in order to supply tap water from which residual free chlorine has been removed into the water tank, all the water is filled by completely switching the water supply route. It is necessary to pass water through the free chlorine removing material and to add water pressure to pass through the densely packed free chlorine removing material.

Further, in the cartridge system using a reducing agent, the reducing agent is mainly composed of powdery calcium sulfite having a reducing action as a main component and granulated with a poorly water-soluble ethyl cellulose or the like as a binder (binder). Had been used. As a result, the principle of the reaction mechanism was that residual free chlorine was brought into contact with and reacted with the surface of the granular particles of calcium sulfite.

[0008] Further, in the structure filled with the granular material, a portion that easily passes through water and a portion that does not easily pass through are likely to be generated, and when used in a state where water pressure is applied, the portion that easily passes through water is more than other portions. Was consumed to react with the remaining free chlorine, and a short path was generated while leaving a large amount of the active ingredient.

In the cartridge using activated carbon, the flow rate is reduced due to clogging by foreign substances contained in tap water, and the residual free chlorine is gradually reduced because the flow rate in the activated carbon is increased to exceed the adsorption capacity. It leaks out and its life is over.

In any case, since it is impossible for the user to know the life from the outside, it is also required to predict and inform the life from the number of times of use.

Next, in the structure described in Japanese Patent Laid-Open No. 06-238092, in order to supply tap water from which residual free chlorine has been removed into the water tank, at the portion where the filter case containing the cartridge is mounted, In order to remove residual free chlorine contained in tap water, a sparingly soluble reducing agent is required to have high contact efficiency (wide contact area) with tap water. For this reason, the contact area gradually decreases during use, and similarly, it is impossible for the user to know the life from the outside. Therefore, it is also required to predict and inform the life from the number of times of use and the like.

In addition, it has been impossible to supply a predetermined amount of reducing agent into tap water over each process from the washing process to the rinsing process by using the solubilizing reducing agent. In that case, in order to cause the color pattern (dye) to change color due to the reducing action, it is required to control the elution to a substantially predetermined amount.

The present invention solves the above problems by dispersing or dissolving a predetermined amount of a reducing agent in tap water or a washing liquid to oxidize and reduce the reducing agent and residual free chlorine completely and quickly. For the purpose of preventing the discoloration and fading of colored patterns (dye), the yellowing of silk, and the oxidation of various organic fiber surface finishing materials due to the oxidation of residual free chlorine contained in tap water. There is.

[0014]

In the washing machine of the present invention, a reducing agent for reducing free chlorine contained in water is configured to be dispersed or dissolved in water supplied to the washing tub or washing liquid in the washing tub. Is.

As a result, there is no need to completely switch the water supply path or add water pressure to the cartridge, and
Highly efficient contact with tap water is not required, and a predetermined amount of reducing agent that has been set in advance is dispersed or dissolved in tap water or washing liquid, and the reducing agent and residual free chlorine are completely and quickly oxidized. It can be removed by reduction reaction and prevents discoloration and fading of colored patterns (dye), yellowing of silk and oxidation of various organic fiber surface finishing materials due to the oxidation of residual free chlorine contained in tap water. be able to.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION According to the first aspect of the present invention, a reducing agent for reducing free chlorine contained in water is dispersed or dissolved in water supplied to a washing tub or washing liquid in a washing tub. In the water supply path and in the washing tub by dissolving a predetermined amount of the reducing agent in the water supply liquid, or by dispersing or dissolving the reducing agent in the washing liquid in the washing tub and supplying water or in the washing tub. The residual free chlorine contained in the washing liquid can be caused to undergo a redox reaction, and the residual free chlorine can be removed.

According to a second aspect of the present invention, in the above-mentioned first aspect of the invention, the reducing agent is a molded body, liquid or powder, and the reducing agent is a molded body. Is a binder with the reducing agent as the main component
When the water comes into contact with the surface of the molded body, the binder gradually dissolves and the reducing agent can be released into the water.
When the released reducing agent comes into contact with residual free chlorine in water, it can instantly cause a redox reaction to remove the residual free chlorine. If the reducing agent is a liquid, a predetermined amount of it should be weighed and supplied to the washing tub or added to the washing liquor in the washing tub to quickly diffuse and dissolve in water and react with residual free chlorine to remove it. You can Furthermore, even if the reducing agent is in the form of powder, by similarly measuring a predetermined amount and supplying it to the water supply to the washing tub or the washing liquid in the washing tub,
It diffuses into water and can be removed by reacting with residual free chlorine.

The invention according to claim 3 is the invention according to claim 1 or 2, wherein the reducing agent is dispersed or dissolved in at least one of the washing step and the rinsing step. From the process to the rinsing process and after dehydration and drying, it is possible to treat with water from which residual free chlorine having an oxidizing effect has been removed.

According to a fourth aspect of the present invention, in the invention according to the second aspect, the reducing agent composed of the molded body has a size by being supplied to the washing tub or dispersed or dissolved in the washing liquid of the washing tub. Since the size of the reducing agent is small, it is possible to notify the user of the time to replace or replenish the reducing agent.

The invention according to claim 5 is the above-mentioned claim 1.
In the invention described in 4, the concentration for dispersing or dissolving the reducing agent in the water supplied to the washing tub or the washing liquid in the washing tub is not more than the concentration capable of removing 4 ppm of free chlorine, and when the reducing agent is calcium sulfite, Concentration of residual free chlorine is 1
To remove ppm of tap water, the concentration of reducing agent must be 2.33ppm, and the concentration of reducing agent is about 10pp.
In the case of m, residual free chlorine having a concentration of 4 ppm can be removed. When the reducing agent is sodium sulfite, the concentration of the reducing agent needs to be 2.4 ppm in order to remove tap water having a residual free chlorine concentration of 1 ppm.
Similarly, in the case of about 10 ppm, residual free chlorine having a concentration of 4 ppm can be removed. The Water Supply Act stipulates that the concentration of residual free chlorine is 0.1 ppm or more, the actual maximum concentration is 1.2 to 1.4 ppm, and the concentration of the reducing agent is a concentration that can remove 4 ppm of free chlorine. If it is (about 10 ppm), residual free chlorine can be sufficiently removed.

On the other hand, the concentration of the reducing agent in the washing liquid is 10 pp.
In the case of m, the change of the colored pattern (dye) is slightly observed after 20 times of washing, and it can be said that there is almost no effect on the laundry.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

(Embodiment 1) As shown in FIG. 1, a water supply hose 1 has a water supply valve 2 having one end connected to a water faucet (not shown) and the other end screwed into a water supply valve 2. The outlet side of is connected to the water supply nozzle 15 through the internal hose 3. A drawer-shaped case 16 is provided below the water supply nozzle 15, a molded body 17 is mounted on the convex portion of the case 16, and a water supply port 18 is arranged further below to form a water supply member.

The molded body 17 is mainly composed of calcium sulfite as a reducing agent and is solidified by a binder which is slowly soluble in water. When the water is supplied during the washing or rinsing process, the water supply valve 2 is opened and the washing tub 19 is used. When supplying water, the reducing agent is dispersed or dissolved and is dispersed or dissolved in the washing liquid in the washing tub 19.

At this time, the size is set in relation to the flow rate of the water supply so that the concentration of the reducing agent dispersed or dissolved in the water supply to the washing tub 19 is less than the concentration (about 10 ppm) capable of removing 4 ppm of residual free chlorine. doing. Also, the molded body 1
In No. 7, the binder is gradually dissolved by the water supply to the washing tub 19, and the size of the molded body 17 is reduced.

In the above construction, when the water supply valve 2 is opened in each of the washing process and the rinsing process, tap water flows from the water supply nozzle 15 through the internal hose 3 into the compact 17 of the reducing agent mounted in the case 16. Supplied in the form of a shower. At this time, the binder of the molded body 17 is gradually dissolved and the fine particles of calcium sulfite are dispersedly released into the tap water, and the tap water is supplied to the washing tub 19 through the water supply port 18.

The fine particles of calcium sulfite dispersed and released in tap water are removed in the case 16 and the water supply port 18 and the washing tub 19 by redox reaction with the residual free chlorine having an oxidizing effect in the tap water. To do. At this time, the concentration at which the reducing agent is dispersed or dissolved in the water supplied to the washing tub 19 is not more than the concentration (about 10 ppm) capable of removing 4 ppm of residual free chlorine, so that the residual free chlorine can be sufficiently removed.

Therefore, it is possible to prevent the discoloration and fading of the color pattern (dye), the yellowing of the silk and the oxidation of the various organic fiber surface finishing materials due to the oxidizing action of the residual free chlorine contained in the tap water. Further, in the molded body 17, the binder is gradually dissolved by the water supply to the washing tub 19, and the size of the molded body 17 becomes small.
By checking the inside, it can be easily understood and the usability can be improved, and the loss of the residual free chlorine removing agent can be reduced.

(Embodiment 2) As shown in FIG. 2, a transparent container 20 is filled with a highly concentrated aqueous solution 21 of sodium sulfite which is a liquid reducing agent, and the transparent container 20 and a metering pump 22 are connected by a hose 23. The hose 24 connected to the discharge side of the metering pump 22 communicates with the discharge port 25 provided in the water supply member. The amount of the high-concentration aqueous solution 21 of sodium sulfite discharged by the metering pump 22 is such that the concentration when dispersed or dissolved in the washing liquid in the washing tub 19 is equal to or lower than the concentration capable of removing 4 ppm of residual free chlorine (about 10 ppm). I am trying. Other configurations are the same as those in the first embodiment.

In the above structure, tap water is supplied to the internal hose 3 when the water supply valve 2 is opened in each of the washing process and the rinsing process.
Through the water supply nozzle 15 into the case 16 in a shower shape. At this time, the high-concentration aqueous solution 21 of sodium sulfite in the transparent container 20 is discharged by a predetermined amount through the hoses 23 and 24 by the operation of the metering pump 22.
Automatically supplied to tap water.

A predetermined amount of highly concentrated aqueous solution of sodium sulfite 21 supplied in tap water is supplied to the water supply port 18 and the washing tub 1.
In 9, the free chlorine is removed by redox reaction with residual free chlorine having an oxidizing effect in tap water. At this time, when the amount of the sodium sulfite high-concentration aqueous solution 21 discharged by the metering pump 22 is dispersed or dissolved in the washing liquid in the washing tub 19, the concentration (about 10 ppm) at which residual free chlorine can be removed by 4 ppm Since it is set as follows, residual free chlorine can be sufficiently removed.

Therefore, it is possible to prevent discoloration and fading of color patterns (dye), yellowing of silk, and oxidation of various organic fiber surface finishing materials due to the oxidizing action of residual free chlorine contained in tap water. The remaining amount of the liquid reducing agent can be easily seen from the transparent container 20.

(Embodiment 3) As shown in FIG. 3, the reducing agent accommodating case 26 accommodates powdery reducing agent calcium sulfite, and a motor 27 is provided below the reducing agent accommodating case 26. The coil spring 29 is rotated by the motor 27 via the transmission mechanism 28 so that a predetermined amount of the calcium sulfite powder in the reducing agent storage case 26 is delivered from the discharge port 30 to the tap water in the water supply member. There is. The amount of the calcium sulfite powder sent out by rotating the motor 27 is such that the concentration when dispersed or dissolved in the washing liquid in the washing tub 19 is equal to or less than the concentration capable of removing 4 ppm of residual free chlorine (about 10 ppm). I have to. Other configurations are the same as those in the first embodiment.

In the above structure, when the water supply valve 2 is opened in each of the washing process and the rinsing process, tap water is supplied from the water supply nozzle 15 into the case 16 in a shower shape through the internal hose 3. At this time, the motor 27 is driven to rotate the coil spring 29 via the transmission mechanism 28, and a predetermined amount of the calcium sulfite powder in the reducing agent storage case 26 is discharged from the discharge port 30 into the tap water in the water supply member. Send out.

A predetermined amount of calcium sulfite powder supplied into the tap water enters the washing tub 19 through the water supply port 18, and the residual free chlorine having an oxidizing action in the tap water (washing liquid) and the redox reaction. To remove free chlorine. At this time, the amount of the calcium sulfite powder delivered by rotating the motor 27 is not more than a concentration (about 10 ppm) at which the concentration when dispersed or dissolved in the washing liquid in the washing tub 19 can remove residual free chlorine by 4 ppm. Therefore, the residual free chlorine can be sufficiently removed.

Therefore, it is possible to prevent the discoloration and fading of the color pattern (dye), the yellowing of the silk and the oxidation of the various organic fiber surface finishing materials due to the oxidizing action of the residual free chlorine contained in the tap water. The remaining amount of the powder reducing agent can be confirmed on the transparent portion (not shown) of the reducing agent storage case 26.

In each of the above embodiments, the reducing agent is supplied to the water supply member of the washing machine, but the reducing agent may be directly supplied into the washing tub. It is possible.

[0038]

As described above, according to the invention described in claim 1 of the present invention, the reducing agent for reducing free chlorine contained in water is dispersed or dissolved in the water supply to the washing tub or the washing liquid in the washing tub. By doing so, it is possible to cause a redox reaction with the residual free chlorine contained in the supplied water or the washing liquid in the washing tub, and to remove the residual free chlorine,
It is possible to prevent discoloration and fading of colored patterns (dye), yellowing of silk and oxidation of various organic fiber surface finishing materials due to the oxidation of residual free chlorine contained in tap water during washing and drying. .

According to the second aspect of the invention, since the reducing agent is formed in the form of a compact, liquid or powder, the reducing agent of the compact uses a binder which is slowly soluble in water. In addition, since the liquid and powder reducing agents are automatically metered and supplied in a prescribed amount, almost a prescribed amount of reducing agent can be dissolved in the water supply or the washing liquid, and all the water supply is filled up densely as in the past. It is not necessary to pass through the residual free chlorine removal agent under pressure load. Also, the reducing agent for the molded body does not require a large area as a contact area with water, so that the reducing agent can be used almost 100% effectively.

According to the third aspect of the present invention, the reducing agent is dispersed or dissolved in at least one of the washing step and the rinsing step. Therefore, from the washing step to the rinsing step and the drying after dehydration. It can be treated with water from which residual free chlorine having an oxidizing action has been removed.

Further, according to the invention as set forth in claim 4, the reducing agent composed of the molded body is configured to be reduced in size by water supply to the washing tub or dispersion or dissolution in the washing liquid in the washing tub. From the above, it is possible to notify the user of the time to replace or replenish the reducing agent depending on the size of the reducing agent.

Further, according to the invention of claim 5, the concentration of the reducing agent dispersed or dissolved in the water supplied to the washing tub or the washing liquid in the washing tub is set to a concentration not more than 4 ppm of free chlorine can be removed. The residual free chlorine in tap water can be sufficiently removed, and the effect of the reducing agent in the washing liquid on the laundry is that the discoloration of the colored pattern (dye) is slightly observed after 20 washings. Can be made to have almost no effect on.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a washing machine according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a washing machine according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a washing machine according to a third embodiment of the present invention.

FIG. 4 is an exploded perspective view of an essential part of an example of a conventional washing machine.

[FIG. 5] (a) An exploded perspective view of a main part of another example of a conventional washing machine (b) A sectional view of a residual free chlorine removing device of the washing machine

[FIG. 6] (a) An exploded perspective view of a main part of another example of a conventional washing machine. (B) A perspective view in which a cartridge of the washing machine is partially cut away.

[Explanation of symbols]

 17 molded product (reducing agent) 19 washing tub

Claims (5)

[Claims] 1. A washing machine in which a reducing agent for reducing free chlorine contained in water is dispersed or dissolved in water supplied to a washing tub or washing liquid in a washing tub. 2. The washing machine according to claim 1, wherein the reducing agent is in the form of a compact, a liquid or a powder. 3. The washing machine according to claim 1, wherein the reducing agent is dispersed or dissolved in at least one of the washing step and the rinsing step. 4. The washing machine according to claim 2, wherein the compact made of the reducing agent is reduced in size by water supply to the washing tub or dispersion or dissolution in the washing liquid in the washing tub. 5. The concentration of the reducing agent supplied to the washing tub or dispersed or dissolved in the washing liquor in the washing tub is 4 pL of free chlorine.
The washing machine according to any one of claims 1 to 4, wherein the concentration is equal to or lower than a concentration capable of removing pm.