KR100958193B1 - Method for controling washing out of washing machine - Google Patents

Abstract

The present invention relates to a rinsing control method of a washing machine that can improve the rinsing performance by controlling the wash water in the rinsing stroke. The rinsing control method of the washing machine according to the present invention performs a hot water rinsing during the first rinsing administration to expand the bubbles between the laundry fibers and the fibers themselves, and performs a cold water rinsing during the last rinsing administration. As the ol of the fiber that was expanded in the contraction is characterized in that it has its own elasticity. The present invention as described above can have the effect of having the sanitary washing by hot water rinsing and the laundry itself elasticity by cold water rinsing, so that wrinkles of the laundry are generated less.

Washing machine, rinse, washing water, hot water, cold water

Description

Rinsing control method of washing machine {Method for controling washing out of washing machine}

Figure 1a is a process of the general washing administration,

Figure 1b is a process of the general rinsing stroke,

Figure 1c is a process of the general dehydration administration,

2 is a control block diagram of a washing machine according to the present invention;

Figure 3a is a process of washing administration according to the invention,

Figure 3b is a process of the rinsing stroke according to the invention,

Figure 3c is a process of the dehydration administration according to the invention,

Figure 4 is a control process of the baby clothes course according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10 microcomputer 11: water level sensor

12: operation selector 13: load sensor

14: water temperature sensor 15: water supply valve drive unit

16: hot water supply valve 17: cold water supply valve

18: drain valve drive unit 19: drain valve

20: motor drive unit 21: motor                 

22: display unit 23: power supply unit

25: memory

The present invention relates to a rinsing control method of a washing machine, and more particularly, to a rinsing control method of a washing machine that can improve the rinsing performance by controlling the wash water in the rinsing stroke.

In general, a stroke in a washing machine consists of a water supply stroke, a washing stroke, a rinsing stroke, and a dehydration stroke. The water supply administration is a process of controlling the washing water to be supplied into the washing tank. The wash water may be selectively used in hot water or cold water, or may be used simultaneously. The wash water is operated in a mode selected by the user. The wash water is water used in a washing process and a rinsing process, and represents water supplied into the washing tank.

The washing administration is a process to remove the contaminants in the laundry by the chemical action of the detergent contained in the wash water and the physical action of the washing blade while stirring the washing blade for a certain time to put the detergent, wash water, laundry. In the general washing administration, as shown in FIG. 1A, water is first supplied to the washing tank, and then, the washing is performed for a predetermined time to detect an accurate amount of laundry, and after adjusting the water level according to the detected amount of laundry, washing is performed. Run for the time set by the consumer.

The rinsing operation is a process of rinsing the detergent components and contaminants in the laundry by supplying the washing water not mixed with the detergent. That is, when the washing administration is completed, as shown in Figure 1b, after the drainage operation for discharging the dirty water during the washing, the intermittent dehydration is performed for a predetermined time. When the intermittent dehydration is completed, dehydration is performed for a predetermined time by varying the rotational speed, and when the dehydration is completed, the dehydration has a rest time for a predetermined time. When the rest time is over, the water supply is controlled again to the inside of the washing tank, and when the water supply is completed, the rinsing operation is performed while rotating the washing blade. As shown in FIG. 1B, the rinsing stroke is performed a number of times selected by the user. The washing water supplied to the inside of the washing tank during the rinsing cycle is determined in a mode (hot or cold water) preset by the user before washing.

The dehydration stroke is a process of dewatering laundry while the washing tank is rotated at a high speed after the rinsing cycle is finished. The dehydration stroke is performed when the rinsing stroke is completed. That is, the rinsing stroke is composed of intermittent dehydration, dehydration and rest operation starting with the drainage operation for discharging the soiled water during the rinsing process, as shown in FIG. 1C.

In this process, the conventional washing machine performs a washing operation, and the conditions when the water supply administration, the washing administration, the rinsing administration, the dehydration administration, and the like are performed by a value (mode) selected by the user. If the user selects the washing water as cold water, the washing tank is supplied with cold water in the washing tank in performing the whole process (hereinafter referred to as 'laundry operation') according to the washing. On the contrary, if the user selects the wash water as hot water, the hot water is supplied to the washing tank in the washing operation so that washing is performed.

On the other hand, the washing machine includes a limited washing mode, such as wool washing, in addition to the standard washing operation mode consisting of the general process as described above. The wool washing has a different washing speed compared to the standard washing, and the washing water selection is limited.

As described above, the conventional washing machine has a washing operation mode (operation mode including a water feeding stroke, a washing stroke, a rinsing stroke, and a dehydrating stroke) in which washing conditions are determined by user selection, and some washing conditions such as wool washing are performed. A washing operation mode for washing laundry at this predetermined value is included.

However, the conventional washing machine does not have a separate control value in the rinsing stroke in all the washing operation modes. Only the number of rinsing cycles was determined by how many times the user sets the number of rinses. Therefore, in the rinsing stroke, the washing water (hot or cold water) having the same value as that in the washing stroke is supplied and the rinsing operation is performed.

The rinsing stroke of a conventional washing machine made of such control adjusts the number of rinsing times to a value for increasing the rinsing performance. However, the adjustment of the rinsing frequency has resulted in the problem of lengthening the washing operation time and the problem of economic burden on the consumer while increasing the water consumption and power consumption.                         

In addition, the conventional washing machine is divided into a cold water rinsing operation and a hot water rinsing operation according to a user's selection in a process of performing a separate rinsing administration mode. In this case, when the hot water rinsing operation is selected, the hot water value is set as the user value.

For example, when the user needs to execute the hot water rinsing operation at the temperature set by the user, the controller tracks the set temperature value of the water temperature read from the water temperature sensor, performs water supply to the previously set water level, and then rinses the primary hot water according to the normal conditions. After the first hot water rinsing operation is completed, the first hot water rinsing water is discharged as it is, and the second hot water rinsing is performed again by receiving hot water up to the set water level. This process is repeated a predetermined number of times of rinsing stroke. Therefore, in the hot water rinsing mode using hot water, which is much more expensive than the cold water value, the problem of high washing cost was exposed.

Accordingly, an object of the present invention is to provide a rinsing control method of a washing machine which can increase the rinsing performance by controlling washing water (rinsing water) supplied from a rinsing stroke to a predetermined value.

Rinsing control method of the washing machine according to the present invention for achieving the above object, the first step of supplying hot water according to the set water temperature up to the set water level; A second step of performing hot water rinsing for a predetermined time by applying a mechanical force set to the laundry to which the hot water is supplied; When the warm water rinsing of the second step is completed, performing a first rinsing stroke including a third step of draining and dehydrating the washing water;

A fourth step of supplying cold water to a set water level when the first rinsing stroke is completed; A fifth step of performing cold water rinsing for a predetermined time by applying a mechanical force set to the laundry to which the cold water is supplied; When the cold water rinsing of the fifth step is completed, it characterized in that it comprises a step of performing a second rinsing stroke including a sixth step of draining and dewatering the wash water.

In the washing machine rinsing control method, when the number of rinsing strokes is set to a plurality of times, the hot water rinsing is performed in the rinsing stroke of the front part so that the air bubbles and the fibers between the fibers are expanded, and the rinsing stroke of the rear part. The cold water rinsing is characterized in that the elasticity of the all-shrinkage of the fiber that was expanded in the previous process to have its own elasticity.

The rinsing control method of the washing machine is characterized in that when the number of rinsing strokes is set to a plurality of times, the first rinsing stroke is performed in the first rinsing stroke, and the second rinsing stroke is performed in the last rinsing stroke. .

The rinsing control method of the washing machine is characterized in that is performed when the laundry is cotton fabric.

The present invention further includes the step of selecting the wash water by the user, wherein the wash water selected by the user is characterized in that is supplied in the rinse stroke except the first rinse stroke and the last rinse stroke.                     

When the hot water is not normally supplied in the first step, an alarm sound is generated.

In addition, the rinsing control method of the washing machine according to the present invention comprises: a washing machine performing a washing operation of a baby clothes course, comprising: a first step of supplying hot water according to a set water temperature to a set water level; A second step of performing hot water rinsing for a predetermined time by applying a mechanical force set to the laundry to which the hot water is supplied; A third step of draining and dehydrating the wash water when the warm water rinsing of the second step is completed; A fourth step of supplying cold water to a predetermined level; A fifth step of performing cold water rinsing for a predetermined time by applying a mechanical force set to the laundry to which the cold water is supplied; When the cold water rinsing of the fifth step is finished, it characterized in that it comprises a sixth step of draining and dewatering the wash water.

Hereinafter, a rinsing control method of a washing machine according to the present invention will be described in detail with reference to the accompanying drawings.

The washing machine of the present invention is intended to improve washing performance by controlling washing water (rinsing water) to a constant value in a rinsing stroke. To this end, the washing machine of the present invention, as shown in Figure 2, the microcomputer 10 for controlling the washing operation (washing cycle, washing cycle, rinsing stroke, dehydration stroke, including the whole process of washing), and washing operation mode And an operation selector 12 for inputting setting conditions. And the washing machine of the present invention is provided with a plurality of sensors, the water level sensor 11 for sensing the water level for each quantity of water supplied to the washing tank, the water temperature sensor 14 for detecting the water temperature in the washing tank, the laundry to determine the amount of washing A load sensor 13 for detecting the weight of the device is provided. The detection values of the sensors are input to the microcomputer 10.

The washing machine of the present invention also includes a memory 25 that stores programs for various washing operations, operating conditions and the like, and a timer 26 for present time information and timing counts. The memory 25 and the timer 26 perform data transfer between the microcomputer 10.

In particular, the memory 25 stores data and control values according to a control process for adjusting the washing water in the rinsing stroke to a predetermined value in the washing machine of the present invention. The control data is an operation process diagram shown in FIG. 3 to be described later, and the control values are reference values set for the control of FIG. 3. Therefore, the microcomputer 10 controls the rinsing stroke based on the data stored in the memory 25.

And a display unit 22 for displaying various display data for informing a user in a washing operation process under the control of the microcomputer 10. The power for controlling the washing machine of the present invention is supplied from the power supply unit 23.

And the washing machine of the present invention, the water supply valve drive unit 15 for receiving and driving the water supply control signal output from the microcomputer 10 and the drainage for receiving and driving the drain control signal output from the microcomputer 10 The valve driving unit 18 is included. The water supply valve driving unit 15 opens and closes operations of the hot water supply valve 16 and the cold water supply valve 17 for supplying hot or cold water into the washing tank, and the drain valve driving unit 18 washes in the washing tank. The operation of the drain valve 19 for draining the water to the outside is opened and closed.

In addition, the washing machine of the present invention is provided with a motor 21 for generating power required by the washing machine, and the motor 21 is driven by the motor driving unit 20 in the microcomputer 10. The power generated by the motor 21 becomes a rotational force for rotating the washing tub and the washing blade (or pulsator).

Next, the rinsing control process in the washing machine according to the present invention having the above configuration will be described in detail.

The rinsing stroke of the present invention can be applied in most washing operation modes, except for some washing operation modes (eg, wool washing operation modes) in which washing water is limited. In particular, the present invention is carried out by applying the control value of the present invention in the rinsing cycle no matter what washing operation mode the user selects.

The washing operation of the washing machine is divided into various courses so that washing can be performed in different ways according to the type of laundry. For example, when less, the different washing operation mode is set for the futon, wool, quiet, soak, water rinse, heart, baby clothes, towels, jeans, etc., the control method for each washing operation mode It is stored in the memory 25 as a program.

As such, when power is supplied into the product in a state in which data according to various operating conditions is stored in the memory 25 so that the washing operation according to a selected course among various courses can be performed, the microcomputer 10 through the power supply unit 23. ) Is supplied with power.

When power is supplied to the microcomputer 10, the washing machine is in a standby state in which washing operation can be performed at any time. In this state, when the user puts the laundry in the washing tank and selects the washing operation according to the course through the operation selection unit 12, the selected signal is input to the microcomputer 10. The microcomputer 10 controls the washing operation based on the input signal to be performed.

First, the washing operation in the washing operation is made in the order shown in Fig. 3A.

The microcomputer 10 opens and closes the hot water feed valve 16 or the cold water feed valve 17 via the feed valve driver 15 to supply water to the washing tank. And the preset pre-washing is performed for a certain time to detect the correct amount of laundry. In the preliminary washing process, the washing blade is rotated at a relatively low rotational speed as compared with the washing process. The water level is adjusted based on the detected value of the water level sensor 11 according to the detected amount of laundry, and then washing is performed for a time set by the consumer. Power required in the washing process is generated while the motor 21 is driven through the motor driving unit 20 under the control of the microcomputer 10.

In this way, the washing administration removes contaminants in the laundry through the chemical action of the detergent contained in the wash water and the physical action of the washing blade while putting the detergent, the wash water and the laundry and stirring the washing wing for a predetermined time. During the washing process, the washing water supplied into the washing tank is determined by a value selected by the user. That is, when the user selects the wash water as hot water, the hot water feed valve 16 is controlled to be opened to supply hot water, and when the cold water is selected, the cold water feed valve 17 is controlled to be opened to supply cold water. Lose.

Next, when the washing stroke is completed, the rinsing stroke shown in Figure 3b is performed. In the rinsing stroke shown above, a control value according to the present invention is applied. First, in order to discharge the dirty water during washing, the microcomputer 10 controls the drain valve 19 in the open state through the drain valve driver 18 to perform the drain operation. Then, intermittent dehydration is performed for a predetermined time. When the intermittent dehydration is completed, dehydration is performed for a predetermined time by varying the rotational speed, and when the dehydration is completed, the dehydration has a rest time for a predetermined time. The power required in the intermittent dewatering operation and the dewatering operation is generated by the motor 21.

After the set idle time, the microcomputer 10 controls the water supply to the inside of the washing tank again, and when the water supply is complete, while rotating the washing blade to control the rinsing operation. At this time, hot water is supplied in the water supply operation after the rest time in the first rinsing stroke. At this time, the value of the washing water (hot water) is a determined value. Therefore, even when the user selects the washing water as cold water, hot water is supplied to the washing tank. The rinsing operation of the process, by supplying the washing water is not mixed with detergent to rinse the detergent components and contaminants on the laundry clean.

In the process, the temperature of the hot water is adjusted to a preset value. Therefore, the microcomputer 10 controls the water supplied to the inside of the washing tank to maintain the temperature at which the temperature is preset while monitoring the detection value of the water temperature sensor 14.

Meanwhile, the rinsing cycle is performed a number of times selected by the user. Therefore, when the user sets two or more times of rinsing, the first rinsing stroke performs a rinsing operation by supplying hot water to the washing tank.

As such, the reason for using hot water in the first rinsing stroke is that the amount of detergent remaining in the clothes during the washing process is large in the washing process, so that the remaining amount of detergent and miso is easily removed by thermal action by hot water. . In other words, when rinsing with hot water, bubbles between the fiberol of the laundry expand, and the fibers of the fiber itself also expand, and the remaining amount of the detergent and the miso is easily released from the laundry by a slight mechanical force. Therefore, it can be a sanitary laundry in which the residual amount of detergent is minimized.

Next, from the second to the last-1 rinsing process, it does not matter which rinse process is performed by any wash water. However, in general, it is preferable that a rinsing process using washing water selected by the user is performed. In other words, when the user selects cold water in the washing administration, the cold water rinsing process will be performed.

However, in the rinsing control method of the washing machine of the present invention, during the last rinsing process, the rinsing process by cold water is unconditionally controlled. That is, as shown in Figure 3b, in the repeated rinsing process, the first is the hot water supply, the last is cold water supply.

The reason for performing the cold water rinsing in this way is that, after using hot water, if the dehydration operation is performed, wrinkles may occur a lot because the laundry is expanded. Therefore, when cold water rinsing is performed in the last rinsing process, all laundry is contracted and has its own elasticity. Therefore, even after the dehydration administration will be less wrinkles.

Therefore, in the rinsing cycle of the present invention, cold water rinsing is performed in the n-th rinsing process. That is, in the rinsing stroke of the present invention, hot water rinsing is first performed to induce the expansion of the fiberol to minimize the detergent residual amount, and then cold water rinsing is performed to shrink the fiberol that has been expanded by the hot water rinsing, thereby resilient itself. To have. Therefore, if the rinsing cycle is controlled by such a feature, the rinsing frequency may be controlled in some form.

For example, when the user selects the wash water and selects the rinsing frequency three or more times, since the fiberol is already expanded in the washing process, the hot water rinsing is performed only in the first rinsing process, and the rest of the rinsing. It is also possible to carry out cold water rinsing in the stroke. On the contrary, when the user selects the washing water as the cold water, and performs the washing stroke, since the rinsing frequency is selected three or more times, the hot water rinsing is performed in the first and second rinsing strokes, and the cold water rinsing is performed in the last rinsing. It is possible. That is, this can be adjusted according to how much the fiberol is expanded by hot water.

When the rinsing stroke is completed by the above process, the dehydration stroke is made of intermittent dehydration, dehydration and rest operation, starting with a drainage operation for discharging the soiled water during the rinsing process, as shown in FIG. 3C. That is, the dehydration stroke is to dehydrate the laundry while rotating the washing tank at high speed after the end of the rinsing stroke.

Next, as an embodiment of the present invention, in the washing course of the washing machine, a baby clothes course for controlling a rinsing stroke using hot water and cold water will be described.

The user puts the laundry in the washing tank and selects the baby clothes washing course using the operation selector 12. The baby clothes washing course selection signal is input to the microcomputer 10.

The microcomputer 10 recognizes that the user has selected the baby clothes washing course, and displays on the display 22 that the baby clothes course is selected. Then, various control data corresponding to the baby clothes washing course are read from the memory 25. Then perform a laundry operation. First, the water supply valve is driven through the water supply valve driving unit 15 to supply water to the washing tank.

Then, the motor 21 is driven through the motor driving unit 20 to generate power required for the washing stroke. At this time, the washing blade inside the washing tank is rotated by the generated power, and the laundry, the detergent and the washing water are mixed, and various operations on the laundry are removed by this operation.

When the washing operation is completed by the above operation, the microcomputer 10 controls the rinsing stroke as shown in FIG. 4 (step 100).

First, the microcomputer 10 controls the drain valve 19 in the open state through the drain valve driving unit 18 and discharges the wash water containing contaminants in the wash tank to the outside of the wash tank (step 103). . Then, the microcomputer 10 drives the motor 21 through the motor drive section 20 to perform intermittent dehydration and dehydration (step 106 and step 109). In the intermittent dewatering operation, the rotational speed of the motor is relatively lower than that of the dewatering operation.

After the dehydration operation in step 109 is performed, the microcomputer 10 determines whether a predetermined time that has been set has elapsed (step 112). The microcomputer 10 performs a first rinsing operation of the baby clothes course (step 115).

In the first rinsing operation, hot water rinsing is performed. Therefore, the microcomputer 10 controls the water supply valve driver 15 to reach the first set water temperature T1 at which the temperature of the water supplied into the washing tank is set. At this time, the water supply valve driver 15 controls the opening degree of the hot water feed valve 16 and the cold water feed valve 17 appropriately, and adjusts the temperature of the washing hot water to the set temperature (steps 118 and 121). ).

In the process of supplying cold water and hot water to the washing tank, the microcomputer 10 detects the temperature of the washing water through the water temperature sensor 14. If the detected temperature is higher than the first set water temperature (step 124), the hot water supply valve 16 is controlled to be closed to shut off the hot water supply (step 127). The cold water supply valve 17 is controlled in a closed state to block the cold water supply (Step 130).

In this process, the washing water supplied to the washing tank becomes hot water reaching the first set water temperature T1. The first set water temperature T1 is a predetermined value suitable for performing a rinsing stroke in the baby clothes course. In particular, as described in the present invention, the fibers of the fiber itself should be set at a temperature at which they can expand.                     

Meanwhile, water is supplied to the washing tank until the set water level is reached (step 133). The set water level is a value determined in the preliminary washing process of the washing administration. That is, the water supply amount corresponding to the laundry weight value is found in the storage table on the memory 25 based on the detection value of the water level sensor 11 for detecting when the water supply up to the corresponding amount is completed.

By performing the above step 133, the washing tank is supplied with hot water maintaining the first set water temperature T1 up to the set water level. Next, the microcomputer 10 drives the motor 21 through the motor driver 20 to drive the washing blade forward and reverse rotation to perform the first warm water rinsing operation (step 136). The rinsing operation according to the step 136 is performed for the strength and time stored in the memory 25.

In this way, when the warm water rinsing operation according to step 136 is performed in the baby clothes course, detergent remaining between the fibers is removed. In particular, in the case of baby clothes, the type of fabric is cotton. Since the structure of the fabric is tighter than that of polyester, the amount of detergent remaining in the garment together with the miso is large. Therefore, the hot water rinsing operation of the step 136 is for easily removing the residual amount of the detergent and the wrong mouth by the thermal action. The hot water rinsing operation of the step 136 is performed until the set first rinsing operation time is reached (step 139).

 Next, when the first hot water rinsing operation of the step 139 is completed, the microcomputer 10 operates the drain valve 19 through the drain valve driver 18 to discharge the wash water stored in the washing tank (the Step 142).                     

After completion of the drainage step 142, the microcomputer 10 performs intermittent dehydration and dehydration, and completely discharges the wash water containing contaminants contained in the laundry to the outside of the washing tank (steps 145 and 148). ). When a predetermined time elapses (step 151), a second rinsing operation is performed (step 154).

In the second rinsing operation of the step 154, a rinsing operation by cold water is performed. Therefore, the microcomputer 10 controls only the cold water supply valve 17 in the open state through the water supply valve driver 15 to supply cold water into the washing tank (step 157).

When the cold water supplied into the washing tank reaches the set water level in step 157, the microcomputer 10 performs the second cold water rinsing operation for the strength and time stored in the memory 25 (step 163, Step 166).

After the set time has elapsed, the second rinsing operation is ended, and the washing water is discharged to the outside through the drain valve 19 to be dehydrated (steps 169 and 172).

When the rinsing stroke of the baby clothes course of the present invention by the above process is completed, the dehydration stroke is performed by the control operation as shown in FIG. The baby clothes laundry rinsing is finished in the above process, when the hot water rinsing, all the clothes are inflated state and the detergents and miso adhered to the laundry easily come out, while performing the hot water rinsing when performing cold water rinsing As the all-inflated clothing shrinks, it becomes elastic. Therefore, after the rinsing stroke according to the present invention, even if a strong dehydration stroke is performed less wrinkles due to the elasticity of the laundry itself.                     

And in another embodiment of the present invention, when controlling the hot water rinsing in the first rinsing process, if the user manually controls the hot water supply valve 16 to lock the opening and closing operation of the ounce water supply valve 16 micro A case in which the computer 10 does not control automatically may occur. In this case, hot water is not supplied in step 118 of FIG. 4. Therefore, if the hot water is not supplied in the above case, the microcomputer 10 may control the generation of an alarm sound and the like to control that an error has occurred to the user.

Therefore, the rinsing control method of the washing machine according to the present invention, by performing a hot water rinsing during the first rinsing stroke, so as to expand the bubbles between the laundry fibers and the fiber itself, and performs a cold water rinsing during the last rinsing stroke It is a technical idea to make the elasticity of the fiber expanded during the process shrink itself.

Within the scope of the technical idea of the present invention as described above, various modifications are possible to those skilled in the art.

Rinsing control method of the washing machine according to the present invention described above can obtain the following effects.

First, the present invention is performing a hot water rinse in the first rinse stroke. At this time, the fiberol is swelled by hot water, and the residual amount of detergent and miso in the laundry is easily released even by a slight mechanical force. Therefore, the present invention can obtain a sanitary washing effect in which the residual amount of detergent is minimal.                     

Second, the present invention is performing cold water rinsing in the second rinsing stroke. Cold water rinsing at this time is characterized by allowing the fiberol that was expanded while using hot water to shrink itself. In this way, since the laundry itself has elasticity, less wrinkles can be obtained in the subsequent strong dehydration process.

Claims (7)

A first step of setting washing water to be supplied according to the number of three or more rinsing cycles and the rinsing stroke; A first rinsing stroke step of performing a first rinsing stroke by using hot water according to the set water temperature until the washing stroke is completed; A second rinsing stroke step of supplying the wash water set in the first step to perform a second rinsing stroke when the first rinsing stroke is completed by the first rinsing stroke step; And And a third rinsing stroke step of performing a final rinsing stroke by using cold water when the second rinsing stroke step is completed. The method of claim 1, In the second rinsing administration step, the washing water set in the first step is supplied and is performed at least once. When the second rinse stroke is two or more times, the same washing water or different washing water is supplied for each rinsing stroke, The washing water is a rinsing control method of the washing machine, characterized in that set to any one of cold water, hot water, cold and hot water. delete delete The method according to claim 1 or 2, The rinsing control method of the washing machine is a rinsing control method of the washing machine, characterized in that is performed when the laundry is cotton fabric. The method of claim 5, The rinsing control method of the washing machine, characterized in that an alarm sounds when the hot water is not normally supplied in the first rinsing stroke. delete

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