KR100337190B1 - method for washing in air bubble-ozone washing machine - Google Patents

Abstract

The present invention relates to a washing method in an air bubble ozone washing machine using air bubbles and ozone to improve the washing power, and the washing efficiency decreases and ozone in the air as the ozone dissolved in the washing water is not dissolved in the washing water and not reacted. in order to prevent an increase in concentration, disorder factor of hydroxide ion (OH ^-) when dissolved in the ozone washing to analyze trends, i.e. pH and conductivity of the number of laundry containing the detergent in the washing process is greater enable washing of In the early stages, the ozone is not generated and the activation of hydroxide ions is gradually increased after mid-washing, so that the ozone solubility is improved by adjusting the air bubble and ozone generator on / off operation time so as to gradually increase ozone generation. To get it.

Description

Method for washing in air bubble-ozone washing machine

The present invention relates to a washing method of a washing machine, and more particularly to a washing method in an air bubble ozone washing machine.

In general, an ozone washing machine is used to wash ozone when washing laundry in order to take advantage of the characteristics of ozone (O ₃ ), that is, excellent in oxidizing power and promoting decomposition of organic substances, sterilization, removal of odor components, and decomposition of surfactants in detergents. It refers to a washing machine that has a function of dissolving and disinfecting laundry by dissolving it in the water. In general, the ozone concentration of ozone water can be adaptively controlled according to the amount of laundry or the water pressure and the contamination of laundry when water is supplied. It is possible to perform the optimal sterilization / disinfection function.

On the other hand, the air bubble washing machine is to increase the washing effect by removing the compressed air generated by using the air pump during the washing stroke by supplying air bubbles to the laundry through the bubble supply nozzle installed in the lower part of the washing machine reservoir. The bubble supply nozzle of the air bubble washing machine is fixed to the water tank of the lower part of the pulsator, and bubbles generated from the air bubble generator including the air pump are sprayed into numerous air bubbles through a plurality of holes formed in the nozzle via a hose, thereby storing the water tank. It is configured to be supplied with.

On the other hand, in the air bubble ozone washing machine that harmonizes the ozone and air bubbles, some oxygen is ozonated while oxygen (O ₂ ) in the air compressed by the air bubble generator passes through the ozone generator, and the remaining air and ozone are stored in the water tank. It is supplied to the washing tank through the lower nozzle to improve the washing effect based on air bubbles and ozone.

1 is a schematic diagram of a conventional air bubble ozone washing machine using ozone as described above.

In the same figure, the air bubble generator 4 generates compressed air for generating air bubbles and delivers it to the ozone generator 5, which ozone generator 5 carries oxygen in the compressed air from the air bubble generator 4; A part of ozone is delivered to the nozzle 7 through the hose 6, and the nozzle 7 is installed on the lower surface of the washing machine, and the compressed air containing oxygen and ozone applied through the hose 6 is upper part thereof. It is configured to be sprayed into a number of drops through a plurality of nozzle holes formed in the supply to the inside of the washing tank (2) through the bottom surface of the reservoir (1) on the side of the pulsator (3).

In such a configuration, the air bubble generator 4 is operated to generate compressed air in the process of washing in the state in which the proper washing water is fresh in the washing tank 2, and the ozone generator 5 is operated to produce air bubbles. Part of the oxygen in the compressed air generated from the generator 4 is ozonated. Next, compressed air containing ozone and oxygen is injected and supplied into the washing tank 2 through the nozzle 7 installed on the lower surface of the washing machine through the hose 6.

Then, the air bubbles generated through the nozzle 7 come into contact with the laundry located in the washing tank 2 to separate foreign matters remaining on the cloth from the cloth, and the ozone in the compressed air at this time is like the air bubbles. It is dissolved in the wash water while being supplied into the washing tank 2 to increase the washing efficiency such as sterilization and disinfection. However, ozone has a very short time to react with organic matter in the wash water, so the probability of ozone not being dissolved in the wash water is very high, and part of the unreacted ozone that is not dissolved in the wash water is the surface of the wash water. There is a problem in that the odor is caused by the spread to the atmosphere after emergence.

In addition, if the ozone diffused in the air is above the appropriate value (0.1 ppm in the atmospheric ozone concentration limit value) to 0.12 ppm or more, there is a problem that may harm the human body, such as respiratory failure or visual impairment.

In addition, typically a washing machine the number of washing uses a detergent, detergent is dissolved in order to remove contaminants from the laundry are hydroxide ions since the weak alkaline (OH ^-) Formula 1 below, this is the medium of ozone originally unstable It is continuously decomposed and finally stabilized by generating oxygen.

[Formula 1]

In other words, when washing detergent by dissolving the standard amount of detergent in the wash water, and looking at the change in pH (pH), 10.5 before washing, 10.1 during washing, 7.6 after one rinsing, 7.6 after two rinsing Similar to pure wash water (pH: 7), 7.2 is shown.

That is, before washing, after washing, the pH is about 10, and the alkalinity is weak. In the initial stage of washing, hydroxide ions (OH-) are activated by a builder, an auxiliary component added to increase the cleaning performance of the detergent. This is because it is present more than hydrogen ions (H +), it is neutralized in the rinsing step to show a neutral pH of about 7. Therefore, when ozone is added from the start of washing, the unstable ozone itself is decomposed by itself, that is, finally becomes 2O ₃ → 3O ₂ to become stable oxygen. At this time, the decomposition rate increases as the pH increases, that is, the washing water is alkaline. Accelerating, this self decomposition leads to the problem of eventually reducing the washing effect by ozone.

Therefore, in the present invention, in order to further improve the washing power, by grasping the characteristic change of the wash water in the course of the washing process, by dissolving ozone efficiently in the washing tank, it is intended to seek a method of maximizing the washing degree.

The present invention has been made in order to solve the above-described conventional problems, the object of the present invention is to prevent a decrease in washing efficiency and an increase in the atmospheric ozone concentration as ozone dissolved in the wash water is not dissolved in the wash water but unreacted. , fault factors of hydroxide ion (OH ^-) when the change trend of the number of laundry contains a detergent, that is, the ozone by analyzing the pH and conductivity dissolved in the wash water during the washing cycle air bubbles and ozone generator so as to minimize the interference effect of the It is to provide a washing method in an air bubble ozone washing machine to improve the solubility of ozone by adjusting the on / off operation time of the ozone to obtain the maximum washing power.

1 is a schematic diagram of a typical air bubble ozone washing machine.

2 is a block diagram of an air bubble ozone washing machine employed in accordance with the present invention.

3 is a flowchart illustrating a washing process of the air bubble ozone washing machine according to the present invention.

<Explanation of symbols for the main parts of the drawings>

4: air bubble generator 5: ozone generator

7: nozzle 30: microcomputer

40: air bubble generation drive unit 50: ozone generation drive unit

The present invention for achieving the above object is an air bubble generator for receiving and compressing the outside air and discharged, an ozone generator for converting a part of the oxygen in the compressed air discharged from the air bubble generator to ozone, discharge through the ozone generator Air bubble equipped with a nozzle for supplying the prepared gas to the washing water through the back of the washing tank During washing, rinsing, and dehydration of the ozone washing machine, air is generated without generating ozone in the initial time period when the total washing administration time is divided into three. Intermittently generating only drops; Intermittently generating ozone in the wash water along with intermittent generation of air bubbles in the second time interval when the total washing administration time is divided into three parts; It characterized in that it comprises the step of continuously generating air bubbles and ozone from the last time interval to the rinsing stroke when the total washing administration time divided by three.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of the air bubble ozone washing machine employed in accordance with the present invention, the key input unit 10, the sensor unit 20, the microcomputer 30, the air bubble generation drive unit 40, ozone generation drive unit 50 , A display unit 60, and a laundry driving unit 70.

In this configuration, the microcomputer 30 displays the current washing status through the display unit 60 on the basis of washing information such as washing, rinsing, and dehydration stroke set based on a predetermined key signal of the key input unit 10, On the basis of the washing information and various detection signals from the sensor unit 20, the laundry driving unit 70 which drives the rotation of the washing tank and the stirring, water supply, and drainage of the pulsator is controlled. The air bubble generation driver 40 and the ozone generation driver 50 generating air bubbles and ozone are selectively driven and controlled.

Next, a detailed description will be given of a washing process according to the present invention in the air bubble ozone washing machine having the above-described configuration, in particular with reference to the flowchart of FIG.

First, as described above, the change in pH when using detergent of a standard usage in a washing machine is summarized as in Table 1 below.

TABLE 1

Therefore, when ozone is introduced into the wash water, the ozone is self-decomposed, that is, in the initial stage of the washing process, in which the activation of hydroxide ions is large, even if ozone is not added, the effect of ozone is not seen. It can be seen that it is preferable to increase the amount of ozone gradually after the step of lowering the concentration of hydroxide ions, that is, after the middle of the washing process.

In the embodiment of the present invention, the beginning of the washing administration, the middle of the washing administration, and the second half of the washing administration are defined as the first time period, the second time period, and the last time period when the total washing administration time is divided into three. For example, if the washing time is set to 15 minutes by the user, the first half of the washing administration represents a time period of up to 5 minutes, the middle is 10 minutes, and the second half of the washing administration is 10 minutes to 15 minutes.

Hereinafter, a washing process according to the present invention will be described in detail based on a purge course having a washing time of 18 minutes in total.

First, when the washing stroke is started in the washing, rinsing, and dehydrating washing process, the microcomputer 30 generates an air bubble by controlling the air bubble generating driver 40 to inject air bubbles from the lower part of the washing tank into the washing water (step 300).

At this time, the air bubble generation drive unit 40 generates the air bubbles intermittently by repeatedly performing the on control for 1 minute and 30 seconds and the off control for the next 30 seconds.

Next, the microcomputer 30 determines whether 4 minutes have elapsed after the start of the washing stroke (step 302), and continuously controls the air bubble generating drive unit 40 intermittently with the above-described control method after 4 minutes has elapsed, and ozone is generated. The driving unit 50 is also turned on for 1 minute and 30 seconds, and repeatedly turned off for the next 30 seconds to generate ozone intermittently and enter the washing water (step 304). That is, ozone is oxygenated due to weak alkalinization of the wash water, and only an air bubble is generated until about 4 minutes in the early stage of washing in which ozone is oxygenated, thereby preventing unnecessary waste of ozone. Next, the microcomputer 30 determines whether 12 minutes have elapsed since the start of the washing stroke, that is, 8 minutes have passed after 4 minutes have elapsed (step 306).

At this time, when 12 minutes have elapsed after the start of washing, the air bubble generating driver 40 and the ozone generating driver 50 are continuously turned on to inject air bubbles and ozone into the wash water (step 308). That is, during the eight minutes of the mid-wash, the solubility of the ozone is increased by slightly neutralizing the wash water, thereby generating ozone to increase the washing efficiency. Then, it is determined whether the washing end time of 18 minutes has elapsed (step 310), and when 18 minutes has elapsed, the washing driving unit 70 is controlled to switch to a rinsing stroke (step 312). Until the end (step 314), the air bubble generation drive unit 40 and the ozone generation drive unit 50 are continuously controlled to inject air bubbles and ozone after washing, and when the rinse stroke is completed, the air bubble generation drive unit 40 And the ozone generation driver 50 is controlled off (step 316). That is, since the washing water is almost neutralized during the 6 minutes of the latter half of the washing and during the rinsing stroke, ozone is continuously generated to maximize the input of the washing water into the ozone.

The control of the air bubble and ozone generation amount described above was calculated by the experimental conditions having the highest degree of washability of 49.3% of the experimental results, and the results of the degree of washing test according to the experimental conditions are shown in Table 2 below.

TABLE 2

At this time, the washing course was applied purge course (18 minutes washing, 2 rinsing, 7 minutes dehydration), the water level was applied to a high water level of 93ℓ, water temperature is 24 ℃, air bubble and ozone generator capacity 2700cc / min, The experiment was carried out at 40 mg / hour.

From the above description, those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention. For example, if the total washing administration time is divided into three, the total washing administration time may be divided equally into three, and for each washing administration time that can be set by the user based on the above-described experimental data, each of the initial washing administration times It can also be programmed to set the time period in the middle, late, and later of the laundry administration.

As described above, according to the present invention, the change of washing water containing detergent in the washing process, that is, pH and conductivity are analyzed to prevent the blocking action of hydroxide ion (OH ⁻ ), which is an obstacle when ozone is dissolved in the washing water. By controlling on / off operation time of air bubble and ozone generator to suppress as much as possible, gradually increasing ozone and dissolving it in washing water efficiently, it has the effect of improving washing power without increasing washing time or detergent usage. .

Claims (3)

An air bubble generator that receives and compresses external air and discharges it, an ozone generator that converts some of the oxygen in the compressed air discharged from the air bubble generator into ozone, and the gas discharged through the ozone generator through the back of the washing tank. In washing, rinsing, and dehydrating strokes of an air bubble ozone washing machine equipped with a nozzle for supplying water, Generating only an air bubble intermittently without generating ozone in the initial time period when the total washing administration time is divided into three parts; Intermittently generating ozone in the wash water along with intermittent generation of air bubbles in the second time interval when the total washing administration time is divided into three parts; And continuously generating air bubbles and ozone from the last time interval to the rinsing stroke when the total washing administration time is divided into three parts. 2. The method of claim 1, wherein the first time period of the three-times total washing administration time has the smallest value, and the second time period has a value of at least the last time period. . 3. The method of claim 1 or 2, wherein the intermittent generation of air bubbles or ozone occurs for one minute and thirty seconds and then no longer for thirty seconds.