KR101024919B1 - Method for controlling of washer with automatically dry - Google Patents

Abstract

The present invention relates to a control method of an automatic drying washer to prevent the laundry from drying or overdrying by limiting the minimum and maximum drying time based on the dry provisional setting time by the quantity detection. In the control of the washing machine, Detecting the amount of laundry to calculate the drying provisional setting time; Setting the minimum drying time and the maximum drying time allowed based on the calculated drying provisional setting time, the drying proceeds On the other hand, drying is continued even if it is determined that the desired dryness is achieved before the minimum drying time, and the drying is completed when the maximum drying time is reached even if the desired dryness is not achieved.

Automatic drying, drum washing machine, drying preset time, minimum drying time, maximum drying time

Description

Method for controlling of washer with automatically dry}

1 and 2 is a block diagram of a drum washing machine having a drying function

3 is a flow chart for drying control of the drum washing machine of the prior art

4 is a flow chart for drying control of the automatic drying drum washing machine according to the present invention

Explanation of symbols for main parts of the drawings

1. Cabinet 2. Tub

3. Drum 4. Drive Shaft

5. Motor section 6. Suspension spring

7. Friction Damper 8. Duct

9. Heater 10. Blowing fan

11. Cooling water supply line

The present invention relates to a washing machine, and more particularly, to a control method of an automatic dry washing machine to prevent the laundry from drying or overdrying by limiting the minimum and maximum drying time based on the dry provisional setting time by the quantity detection. will be.

In general, a drum washing machine is a method of washing by using a friction force of a rotating drum and the laundry by receiving the driving force of the motor unit in a state in which detergent, washing water, and laundry are put into the drum. It doesn't get tangled, knocks and rubs to give the laundry effect.

In addition, in accordance with the trend of improving and upgrading the functions of the drum washing machine, there is a trend of increasing the demand for a combined drum washing machine capable of performing not only washing and dehydrating functions of laundry but also a drying function.

Such a combined drum washing machine forcibly draws outside air into a fan and a heater installed outside the tub, heats it, and blows the heated hot air into the tub to dry the laundry.

Hereinafter, the automatic drying control of the drum washing machine according to the related art will be described with reference to the accompanying drawings.

1 and 2 is a block diagram of a drum washing machine having a drying function.

1 and 2, the tub washing machine having a drying function is provided with a cylindrical tub 2 inside the cabinet 1 and a cylindrical drum 3 inside the tub 2. This is rotatably installed.

The front end of the drive shaft 4 is axially connected to a spider (not shown) fixed to the rear of the drum 3, and the drive shaft 4 penetrates through the central portion of the tub 2 to form a rear wall of the tub 2 ( 2a) is connected to the rotor of the motor unit 5 from the outside.

Thus, when a voltage is applied to the stator of the motor unit 5, the rotor of the motor unit 5 rotates, and the drive shaft 4 rotates in conjunction with the rotor.

Meanwhile, a suspension spring 6 supporting the tub 2 is installed between the inside of the upper surface of the cabinet 1 and the upper side of the outer circumference of the tub 2, and the inside of the lower surface of the cabinet 1 and the tub are installed. (2) A friction damper 7 is provided between the lower side of the outer circumferential surface to damp the vibration of the tub 2 generated during the dehydration stroke.

On the other hand, the drum washing machine is provided with a drying means for performing a drying stroke, which is installed so that both ends of the duct 8 communicate with the front and rear of the tub 2 on one side of the tub (2). And a heater 9 for heating the air blown by the blowing fan 10 and the blowing fan 10 in the duct 8 extending upward of the tub 2. Is installed.

The upper end of the vertical portion of the duct 8 is connected to the cooling water supply pipe 11 for supplying the cooling water for condensing the hot and humid hot air circulating into the duct 8 through the tub (2).

In order to achieve accurate and granular dryness in a drum washing machine having such a structure, a temperature sensor necessary for performing an automatic drying algorithm is configured therein.

The drying control method of the combined drying drum washing machine is as follows.                         

3 is a flow chart for drying control of the drum washing machine of the prior art.

The automatic drying function in the drum washing machine with automatic drying function that detects the amount of dryness and the degree of drying to dry to an appropriate drying level is operated as follows.

After detecting the amount of laundry put into the drum through the detection of the amount of water, the drying time set in advance on the display window is displayed in the display window according to the amount of laundry and the drying proceeds.

The time thus displayed becomes the "dry temporary set time".

While drying, the internal humidity is sensed by direct or indirect method, and drying continues until it reaches a proper level of humidity, and when drying reaches a proper level, drying is terminated.

Specifically, as shown in Figure 3, when the drying stroke is started (S301), the amount of laundry to be dried is detected (S302).

Here, the detection of the amount of laundry can be carried out at the beginning of the washing stroke and use the value thereof, or can be carried out after the end of the dehydration stroke in order to increase the accuracy.

Subsequently, the drying provisional setting time is calculated based on the detected amount of quantity, and this is displayed as the remaining time until completion of drying on the display window (S303).

And it enters the actual drying step and starts the heater operation and supply of condensate (S304).

In this way, while the drying proceeds, the humidity is detected to determine the dryness of the laundry.                         

Humidity detection is used, such as direct detection and indirect methods, for example, it is possible to calculate the humidity based on the detection of the internal temperature.

Subsequently, the detected humidity value is compared with the set humidity value (S306), if it is determined that the desired dryness is achieved, the drying process is terminated (S307), or the drying continues and the humidity detection and the dryness determination are repeated. .

The automatic drying control method of the prior art can increase the convenience of the user, but the drying accuracy varies according to the sensing capability of the humidity detection sensor for determining the dryness.

However, in the drying control of the automatic drying washer of the prior art described above has the following problems.

If the detection means for detecting the internal humidity directly or indirectly during drying is incorrectly detected or malfunctions, problems such as over-drying or undrying due to the drying process being terminated even though the drying is not completed even though the drying is in the desired state or the drying is not completed. Occurs.

This causes damage to the laundry due to overdrying or a safety problem, and causes the reliability of the product to be greatly reduced when the drying stroke is terminated in an undried state.

The present invention is to solve the problem of the drying control method of the automatic drying drum washing machine of the prior art, by limiting the minimum and maximum drying time based on the dry provisional setting time by the quantity detection laundry is not dried or over It is an object of the present invention to provide a control method of an automatic drying washing machine that can prevent drying.

The control method of the automatic dry washing machine according to the present invention for achieving the above object, in the control of the washing machine having a drying function, the step of detecting the amount of laundry to calculate the drying provisional setting time; Setting a minimum drying time and a maximum drying time allowed on the basis of the step, and during the drying, the drying is continued even before the minimum drying time is determined that the desired drying degree is achieved, and the desired drying degree is not achieved. Even if it is not the maximum drying time, the drying is characterized in that the end.

Here, in the interval between the minimum drying time and the maximum drying time, detecting the humidity changes according to the drying progress in order to determine the dryness; comparing the detected humidity value and the set value; the detected humidity value is set as a comparison result If less than or equal to a value, determining that the desired dryness has been achieved.

The minimum drying time and the maximum drying time may be set differently based on the dry provisional setting time according to the quantity of laundry to be dried, or the same for all the amounts.

Here, the minimum drying time is set to a value smaller than the dry provisional set time, the maximum drying time is set to a value larger than the dry provisional set time.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of the embodiments.

Referring to the accompanying drawings, a preferred embodiment of a control method of an automatic dry washing machine according to the present invention will be described in detail as follows.

4 is a flow chart for drying control of the automatic drying drum washing machine according to the present invention.

The control method of the automatic drying washing machine according to the present invention is to compensate for an error caused by a misdetection or malfunction of the sensor for determining the dryness level, and the time point at which the completion of drying is determined is within the maximum drying time from the minimum drying time. It is to be determined in the section.

The overall drying proceeds first, after detecting the amount of laundry put into the drum through the detection of the amount of capacity, and then displays the drying time set in advance on the display window as the remaining time in the display window according to the amount of steamed amount, and proceeds with drying.

The time so marked becomes the dry provisional set time.

While drying, the internal humidity is detected by a direct or indirect method to continue drying until it reaches an appropriate level of humidity, and the drying is terminated when the appropriate level of humidity is reached. Limit using time and minimum drying time.

That is, the maximum drying time and the minimum drying time are set based on the dry provisional setting time set through the detection of the quantity, and the drying completion detection is detected only within the minimum drying time to the maximum drying time by using the same.                     

Specifically, as shown in Figure 4, when the drying stroke is started (S401), the amount of laundry to be dried is detected (S402).

Here, the detection of the amount of laundry can be carried out at the beginning of the washing stroke and use the value thereof, or can be carried out after the end of the dehydration stroke in order to increase the accuracy.

Subsequently, the drying provisional setting time is calculated based on the detected amount of quantity, and this is displayed as the remaining time until completion of drying on the display window (S403).

Then, the maximum drying time and the minimum drying time allowed based on the calculated dry provisional setting time are set.

The maximum drying time and the minimum drying time value are applied equally depending on the amount of dose or differently depending on the amount of dose.

That is, apply the same maximum dry time = (dry set time + 60 minutes), minimum dry time = (dry set time-30 minutes), or +60 minutes and -30 minutes, depending on the quantity. It is also possible to increase the drying accuracy by changing the value.

And it enters the actual drying step and starts the heater operation and supply of condensate (S405).

In this way, while the drying proceeds, the humidity is detected to determine the dryness of the laundry.

Humidity detection is used, such as direct detection and indirect methods, for example, it is possible to calculate the humidity based on the detection of the internal temperature.                     

Subsequently, by comparing the detected humidity value with the set humidity value (S407), if it is determined that the desired dryness is achieved, it is determined whether the current time is the time when the drying starts and the minimum drying time has elapsed (S408).

Here, if the current drying completion determination time point is the time when the minimum drying time has not elapsed, it is judged as the erroneous detection or malfunction of the detection means for detecting the humidity and continues to dry.

In this way, drying continues, and when the minimum drying time elapses, the drying stroke ends. (S408)

The limit of drying termination determination using the minimum drying time is to prevent undried phenomenon.

When it is determined that the desired dryness is not the desired dryness in the step of comparing the detected value and the set value after the humidity detection step for determining the dryness, it is determined whether the present time is the time when the maximum drying time has elapsed. S410)

If it is determined that the desired dryness is not desired, the drying process is continued, the humidity detection and the dryness determination are repeated, and when the maximum allowed drying time is reached, the drying process is terminated regardless of the dryness level (S409).

Of course, even if it is not the maximum drying time, it is natural to terminate the drying stroke if it is determined that the desired drying degree has been achieved.

Such a control method of the automatic dry washing machine according to the present invention can prevent undried or overdrying due to a malfunction or misdetection of a sensor for determining a drying completion during a drying stroke.

Such a technical configuration and drying algorithm according to the present invention is applicable not only to the drum washing machine having an automatic drying function, but also to other washing machines having a drying function.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Such a control method of the automatic dry washing machine according to the present invention has the following effects.

First, if the detection means for directly or indirectly detecting the humidity inside during drying is wrongly sensed or malfunctions, the drying process is prevented from being terminated even if the drying is not completed or the drying is not completed.

Second, to solve the damage or safety problems of the laundry due to over-drying, and to prevent the end of the drying stroke in the undried state has the effect of increasing the reliability of the product.

Claims (4)

In the control of the washing machine having a drying function, Calculating a dry provisional setting time by sensing a quantity of laundry; Setting a minimum drying time and a maximum drying time allowed based on the calculated drying provisional time; While the drying is in progress, the drying method is continued even if it is determined that the desired drying degree is achieved before the minimum drying time, and the drying is terminated when the maximum drying time is reached even though the desired drying degree is not achieved. . The method of claim 1, wherein in the interval between the minimum drying time and the maximum drying time, for determining the degree of drying, Detecting humidity that changes as the drying progresses; Comparing the detected humidity value with a set value; And if the detected humidity value is less than or equal to the set value, determining that the desired dryness has been attained. The method of claim 1, wherein the minimum drying time and the maximum drying time are set differently based on the dry provisional time according to the quantity of laundry to be dried, or the same for all the quantities. . 4. The control method according to claim 3, wherein the minimum drying time is set to a value smaller than the dry preset time, and the maximum drying time is set to a value greater than the dry preset time.

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