KR20040011221A - Suds removing method of drum washer - Google Patents

Abstract

PURPOSE: A method for removing bubbles of a drum washing machine is provided to prevent bubbles during washing, and to improve washing efficiency by washing in case of the concentration of detergent dissolved in water to be less than the reference value and adjusting washing factors such as water level, washing time or pattern in case of the detergent concentration to be over the reference value with detecting the detergent concentration. CONSTITUTION: Water and detergent are supplied into a washing tub to the predetermined level at the same time(S1,S2). Washing is performed for the predetermined time in finishing feeding water to the predetermined water level(S3,S4). The concentration of detergent dissolved in water is measured after the predetermined time(S5,S6). The detergent concentration is compared with the reference value(S7), and washing is performed according to the washing course modifying washing factors to prevent bubbles during washing if the detergent concentration is over the reference value(S8). Washing is performed normally by deciding absence of bubbles if the concentration of detergent is less than the reference value(S9).

Description

Foam washing method of drum washing machine {Suds removing method of drum washer}

The present invention relates to a foam washing method of the drum washing machine, in particular, to detect whether the foam is generated during the washing administration and to wash, rinse and dehydration in a state in which the foam is completely removed, the washing machine to improve the washing performance It relates to a method of removing bubbles.

In general, a washing machine is a machine that removes stains on clothes by providing a mechanical action using electricity, and a drum washing machine is rotated by a driving force of a motor while detergent, washing water, and laundry are put in a drum installed horizontally. Washing by using the friction between the drum and the laundry is almost no damage to the laundry and the laundry is not tangled with each other, knocking and rubbing has the washing effect.

1 is a cross-sectional view illustrating a structure of a drum washing machine according to the related art, wherein a tub 6 and a tub 6 installed inside the cabinet 2 to be suspended by a spring 4 are installed inside the tub 2. Washing tank 10 consisting of a drum (8) for washing, a lifter (12) installed on the inner surface of the drum (8) to lift the laundry so that the laundry can be dropped by gravity at a predetermined height, and It is configured to include a motor (14) mounted on one side of the tub (6) to rotate the drum (8), further comprising a water level sensor (not shown) for detecting the level of the wash water supplied to the washing tank (10) Include.

In addition, the upper side of the cabinet 2 has a water supply hose 18, a water supply valve 20 and a detergent box 22 for supplying washing water and detergent into the tub 6, the tub 6 The lower side of the) is provided with a bath pump 24 and the drain hose 26 for circulating or draining the wash water.

Foam washing method of the drum washing machine according to the prior art for removing the foam generated during the washing stroke in the drum washing machine configured as described above, first, if the washing water level detected by the water level sensor exceeds the set water level The microcomputer that controls the operation of the drum washing machine determines that bubbles are generated in the washing tank 10 and stops the washing stroke.

After the washing stroke is stopped, if the water level sensor continuously detects the washing water level and returns the set water level, it is determined that the foam is removed and the washing stroke is performed again.

However, since the foaming method of the drum washing machine according to the related art as described above can determine whether the foam is generated only by the washing water level detected by the water level sensor, the residual detergent in the laundry even when the water level returns to the set water level. Since components may remain, bubbles may be generated again through washing, rinsing, and dehydration, and thus, there is a problem that smooth washing is not performed.

The present invention has been made to solve the above problems of the prior art, the object of the present invention is to detect the washing water level when performing the washing to remove the foam after the foam generated without washing the detergent concentration dissolved in the wash water at the beginning of the washing It is to provide a method for removing the foam of the drum washing machine that can prevent the generation of foam in advance by changing the washing method by measuring.

1 is a cross-sectional view showing a structure of a general drum washing machine,

Figure 2 is a flow chart illustrating a method of removing the foam of the drum washing machine according to the present invention.

According to a feature of the foam removing method of the drum washing machine in the present invention for solving the above problems, the first step of washing water is supplied into the washing tank prior to performing the washing and the detergent is added, the washing water level is set to the washing water of the first step A second step of washing is performed for a set time when the water supply is completed, a third step of measuring a detergent concentration dissolved in the wash water after the set time of the second step, and the detergent concentration detected in the third step And a fourth step of washing is performed according to a plurality of preset washing methods.

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

Defoaming method of the drum washing machine according to the present invention, as shown in Figure 2, first the detergent is introduced into the set water level in the washing tank 10 described above before performing the washing in the first step at the same time the water supply valve 18 Is turned on to supply wash water (see S1 and S2).

Here, reference numerals not described in FIG. 2 use the same reference numerals as in FIG. 1.

In the second step, the washing is performed for a predetermined time when the washing water is completed at the set water level in the first step (see S3 and S4).

The third step measures the concentration of detergent dissolved in the wash water after the set time of the second step elapses (see S5 and S6).

Here, the detergent concentration is measured by an electrode sensor installed on the lower side of the tub (6), the electrode sensor is composed of two conductive pieces formed to be in contact with the wash water at a predetermined interval, The conductivity of the wash water is sensed, and the conductivity is an application that varies depending on the content of hardness components such as magnesium ions and calcium ions contained in the wash water.

Therefore, the conductivity of the wash water is changed according to the amount of detergent dissolved in the wash water, and the conductivity is received from the microcomputer controlling the operation of the drum washing machine, and the concentration of the detergent according to the conductivity of the wash water pre-stored in the microcomputer. It is possible to measure the detergent concentration of the wash water through the data.

The fourth step determines whether the detergent concentration measured in the third step is greater than or equal to the set value (see S7).

In the fifth step, when the detergent concentration exceeds the set value in the fourth step, the washing is performed according to the washing method in which the washing factor is changed to prevent foaming during washing.

Here, the washing factor means all the variable factors that may affect the washing performance, and means washing level, washing time, washing pattern, and the like.

In the sixth step, when the determination result of the fourth step is that the detergent concentration is less than or equal to the set value, it is determined that no foaming occurs during the washing, and washing is performed according to a preset general washing method.

After all, the foam removing method of the drum washing machine according to the present invention is required to remove the foam by washing according to a plurality of washing methods previously stored in the microcomputer of the drum washing machine according to the detergent concentration dissolved in the wash water. Compared to the method of stopping washing for a while, foaming can be prevented before washing, and residual detergent components in the laundry can also be removed to prevent foaming during washing, rinsing and dehydration. Therefore, the washing performance can be improved.

In the foam washing method of the drum washing machine according to the present invention configured as described above, since the foam generated during washing is related to the detergent input amount, the detergent concentration is less than the set value by detecting the detergent concentration dissolved in the washing water during washing. It is determined that the foam does not occur during the washing to perform the washing in accordance with a predetermined general washing method, and if the detergent concentration exceeds the set value, it is determined that the foam is generated during the washing, washing water level, washing time And washing factors such as washing patterns, etc., to prevent washing from occurring in advance when washing is performed according to the changed washing method, thereby improving washing performance.

Claims (4)

A first step in which washing water is supplied to the washing tank before washing is performed and detergent is added thereto; A second step in which washing is performed for a set time when water supply is completed at the set washing level of the first step; A third step of measuring a detergent concentration dissolved in the wash water after the elapse of the set time of the second step; And a fourth step of washing the laundry according to a plurality of washing methods preset according to the detergent concentration detected in the third step. The method of claim 1, The detergent concentration is installed on the lower side of the washing tank is measured by an electrode sensor for sensing the conductivity of the wash water, The conductivity of the wash water is a bubble removing method of the drum washing machine, characterized in that it depends on the detergent concentration of the wash water. The method of claim 1, The fourth step includes a first step of washing by a general washing method when the detergent concentration measured in the third step is less than or equal to a set value; When the detergent concentration exceeds the set value, the foaming method of the drum washing machine, characterized in that further comprising a second step of washing is performed by the washing method is changed washing parameters. The method of claim 3, wherein The washing factor is a foam washing method of the drum washing machine, characterized in that the variable factor affecting the washing performance, such as washing water level, washing time and washing pattern.