KR100730930B1 - Dehydration method of drum type washing machine - Google Patents

Abstract

A dehydration method of a drum washer is provided to remove bubbles by operating a blowing fan for a predetermined period of time and supplying condensate, thereby reducing excessive consumption of water and maintaining the dehydration performance. A drum washer has a condensation type drying function. A dehydration method of the drum washer includes the steps of: detecting excessive bubbles after entering into a dehydration process(S16); stopping the dehydration operation if the excessive bubbles are detected and operating a blowing fan for a first predetermined period of time(S20); and supplying condensate for a second predetermined period of time(S24) after the blowing fan is operated for a predetermined period of time and reentering into the dehydration process. The excessive bubbles are determined when the deviation between a set dehydration RPM and a measured dehydration RPM is more than 50 RPM.

Description

Dehydration method of drum washing machine {DEHYDRATION METHOD OF DRUM TYPE WASHING MACHINE}

1 is a view showing a general drum washing machine.

2 is a flowchart illustrating a dewatering method of a drum washing machine according to the present invention.

   -Explanation of symbols for the main parts of the drawings-

111: main body 112: damper

113: reservoir 115: washing tank

116 lifter 117 rotation axis

118: belt pulley 119: drive motor

120; Motor Pulley 121: Electric Belt

123: detergent container 125: water supply pipe

127: water supply valve 129: drain pipe

130: drain pump

The present invention relates to a method for controlling dehydration of a drum washing machine, and more particularly, in a drum washing machine having a condensation type drying function, stopping dehydration when an overload occurs due to foam during dehydration operation, operating a blowing fan for a predetermined time, and supplying condensate with foam The present invention relates to a dehydration method of a drum washing machine capable of maintaining dehydration performance by removing bubbles while reducing excessive water consumption.

Generally, a washing machine is a machine for washing laundry by performing washing, rinsing, and dehydrating strokes according to a predetermined algorithm. The washing machine is classified into a pulsator type, a stirring type, a drum type, and the like according to a washing method.

At this time, the drum washing machine has been widely used with the advantages of the lowest laundry damage rate and the lowest use quantity compared to other types of washing machines.

1 is a view showing a general drum washing machine.

As shown here, a main body 111 forming an outer body is provided with a plurality of dampers 112 and a water storage tank 113 in which washing water is filled, and when the laundry is contained in the water storage tank 113, the inner circumferential surface thereof is formed. Cylindrical washing tank 115 in which the lift 116 is arranged is rotatably installed in the transverse direction, and the rotating shaft 117 is installed to the outside of the storage tank 113 in the washing tank 115 so that the belt pulley ( 118) is built up.

A driving motor 119 is mounted at one lower side of the reservoir 113, and a motor pulley 120 is installed on the rotation shaft 117 of the driving motor 119, and the motor pulley 120 is a belt pulley 118. And is connected to the electric belt 121, the washing tank 115 may be rotated as the drive motor 119 is driven.

In addition, a detergent container 123 into which a detergent is put is communicated with the water storage tank 113 at an upper portion of the main body 111, and a water supply pipe 125 and a water supply valve 127 are installed at one side of the detergent container 123. Washing water and detergent may be introduced into the reservoir 113 through the water inlet. In addition, a drain pipe 129 is connected to the lower portion of the reservoir 113, the drain pipe 129 is provided with a drain pump 130 for forcibly discharging the drain.

Therefore, when the laundry is put in the washing tank 115 and the washing machine is operated, the driving motor 119 is driven after water is supplied into the washing tank 115 through the water supply pipe 125 and the water supply valve 127 and a certain amount of water is supplied. The rotational force of the driving motor 119 is transmitted to the washing tank 115 through the motor pulley 120 → the electric belt 121 → the belt pulley 118 → the rotating shaft 117 so that the washing tank 115 rotates. Done. When the washing tank 115 rotates in this way, the laundry in the washing tank 115 is repeatedly lifted upward by the lift 116 formed on the inner circumferential surface of the washing tank 115, and the operation of dropping downward is repeated. Is washed by.

The washing tank 115 is rotated at a low speed (about 50-55 rpm) at the low speed (about 50-55 rpm) while the washing stroke is in progress, and when dehydrated, the washing tank 115 rotates at a high speed (about 800-1000 rpm). The water is discharged out of the water storage tank 113 through a number of fine holes formed in the circumferential wall of the washing tank 115 and then drained out by the drain pump 130 through the drain pipe 129.

By the way, the general drum washing machine as described above generates a lot of bubbles due to the rising and falling of the laundry in the process of performing the washing operation, when the foam is filled between the reservoir 113 and the washing tank 115. The rotation of the washing tank 115 is hindered by the fluid resistance of the foam to overload the drive motor 119, there is a problem that can not achieve a smooth drainage due to the foam during drainage after washing.

In addition, during the dehydration operation, the RPM of the drive motor is rapidly increased in a state in which a certain amount of laundry is drained by driving a drain pump before rotating the drive motor, thereby maintaining a high RPM for a predetermined time. There is a problem in that the detergent solution is excessively bumped with the washing tank due to the rapid rise in RPM and high RPM to promote the foaming.

In addition, when foam is frequently generated, drainage is not smoothed due to the foam, which reduces the dewatering efficiency and also increases the power consumption as well as an excessive load on the driving motor due to the fluid resistance of the foam. .

Therefore, if the dehydration performance decreases due to the excessively generated bubbles, the dehydration stroke is stopped and the water is re-rinsed repeatedly for a predetermined number of times, and the dehydration stroke is performed while the bubbles are removed. There is a problem that the increase in the amount of use is a rinsing stroke.

The present invention has been made to solve the above problems, an object of the present invention is to stop the dehydration in the drum washing machine having a condensation-type drying function due to foam overload during dehydration operation and to operate the blowing fan for a certain time and to condensate The present invention provides a drum washing machine dehydration method that can maintain the dehydration performance by removing the foam while reducing the consumption of excessive water by supplying the foam to supply.

The present invention for achieving the above object in the dehydration method of the drum washing machine having a condensation-type drying function, the step of detecting a transient bubble after entering the dehydration stroke, stop the dehydration if the transient bubble is detected and removing the blowing fan It is characterized in that it comprises a step of operating for a predetermined time, and the step of supplying the second condensate water for a predetermined time after the operation of the blower fan for a predetermined time and re-entering the dehydration stroke.

In the present invention, the transient bubble is characterized in that it is determined that the deviation of the set dehydration RPM and measured dehydration RPM occurs more than 50 RPM.

In the present invention, the first schedule time is 2 minutes and the second schedule time is 3 minutes.

Blowing fan in the present invention is characterized by operating at 500RPM.

In the present invention, if the dehydration re-entry exceeds five times, characterized in that it further comprises the step of terminating the dehydration after the error display.

In the present invention, if the total dehydration stroke time exceeds twice the normal dehydration stroke time characterized in that it further comprises the step of terminating the dehydration stroke after the error display.

The present invention made as described above, if the dehydration performance is reduced due to excessive bubbles after entering the dehydration stroke operation of the blower of the condensation type drying function and supply the condensed water to remove the generated bubbles to proceed to dehydration while reducing the consumption of water dehydration To maintain performance.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only and the same parts as in the conventional configuration using the same reference numerals and names.

2 is a flowchart illustrating a dewatering method of a drum washing machine according to the present invention.

First, after the washing stroke and the rinsing stroke, the RPM of the driving motor 119 is rapidly increased in a state in which the drain pump 130 is drained by draining a predetermined amount of laundry before entering the dehydration stroke and rotating the driving motor 119. It proceeds to the dehydration operation to maintain a high RPM until dehydration is completed (S12) (S14).

At this time, if the deviation occurs more than 50RPM by comparing the set RPM and the measured RPM, it is determined that the dehydration performance is reduced due to the overload caused by foam (S16).

When it is determined that excessive foam is generated, the dehydration is stopped (S18) and the blowing fan is operated with a 500rpm breeze for about 2 minutes without operating a drying heater (not shown) in the condensation type drying function. Contact with air is removed (S20) (S22).

After supplying the condensate for about 3 minutes to remove the bubbles raised through the condensation tube as well as to remove the entire bubble by crushing (S24) (S26).

After removing the bubbles, re-entry the dehydration stroke and measure the state of the transient bubbles again. If the excessive bubbles occur, the above bubble removing process is repeated about five times (S28).

When re-entry the dehydration administration due to the excessive bubbles even after repeating about five times, an error is displayed and the dehydration administration ends (S32).

On the other hand, the dehydration stroke time is counted from the initial dehydration stroke entry, and even if the total dehydration stroke time exceeds 2 times the set dehydration stroke time when it is normally operated, the error is continuously displayed without proceeding to the dehydration stroke and the dehydration stroke ends (S30) (S32).

As described above, the present invention stops dehydration when overloading occurs due to foaming in the drum washing machine having a condensation type drying function, operates the blower fan for a certain time, and removes the foam by supplying condensed water to reduce foam consumption while reducing foaming. There is an advantage to maintain the dehydration performance by removing the.

Claims (7)

In the dewatering method of the drum washing machine having a condensation type drying function, Detecting excessive bubbles after entering the dehydrating administration; Stopping dehydration and operating the blower fan for a first time when a transient bubble is detected; The step of operating the blow fan in a predetermined time after the condensed water is supplied for a second predetermined time and re-entering the dehydration stroke Dehydration method of the drum washing machine comprising a. The method of claim 1, wherein the transient bubbles in the dehydration method of the drum washing machine, characterized in that it is determined that the deviation of the set dewatering RPM and the measured dewatering RPM occurs more than 50 RPM. The method of claim 1, wherein the first predetermined time is dewatering method of the drum washing machine, characterized in that 2 minutes. The method of claim 1, wherein the blowing fan is a dewatering method of the drum washing machine, characterized in that operated at 500RPM. The method of claim 1, wherein the second predetermined time is dewatering method of the drum washing machine, characterized in that 3 minutes. The dewatering method of a drum washing machine according to any one of claims 1 to 5, further comprising the step of terminating the dehydration stroke after displaying an error if the dehydration stroke reentry exceeds five times. The dewatering method of a drum washing machine according to claim 6, further comprising terminating the dehydration stroke after displaying an error when the total dehydration stroke time exceeds twice the normal dehydration stroke time.

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